JP7101474B2 - Wireless communication equipment and wireless communication system - Google Patents

Description

The present invention relates to a wireless communication device provided with an accessory device and a wireless communication system provided with a plurality of wireless communication devices, and in particular, it is possible to prevent damage or malfunction of the accessory device and to secure communication between the wireless communication devices. The present invention relates to a wireless communication device and a wireless communication system that can be used.

[Explanation of Prior Art: Fig. 9]
Conventionally, as a system used for, for example, a firefighting radio, there is a wireless communication system provided with a command device and a plurality of mobile stations. Such a wireless communication system will be described with reference to FIG. FIG. 9 is an explanatory diagram showing a configuration example of a wireless communication system including a command device and a mobile station.
As shown in FIG. 9, the wireless communication system includes a command device 1, a base station 2, and a plurality of mobile stations 3.
In the example of FIG. 9, only one command device 1 and one base station 2 are described, but two or more may be used. Further, although two mobile stations (1) and mobile station (2) are shown as the mobile station 3, there may be three or more. The mobile station 3 is a wireless communication device installed in the vehicle.

The command device 1 communicates with a plurality of mobile stations 3 and outputs instructions (commands) to the plurality of mobile stations 3 all at once. In the simultaneous command, transmission is performed by simultaneous broadcasting to a plurality of mobile stations 3 using a common downlink channel.
The base station 2 relays the communication between the command device 1 and the mobile station 3, and here, the command device 1 is connected to the command device 1 by a wired line, and the mobile station 3 is connected to the mobile station 3 by a wireless line.

The mobile station 3 receives a simultaneous command from the command device 1 and performs individual communication using the same channel as the other mobile stations 3 (intragroup communication). In-group communication may be performed without going through the base station 2 or may be performed via the base station 2.
Further, although not shown, the mobile station 3 transmits to the command device 1 using a common uplink channel.

In such a wireless communication system, the simultaneous command transmitted from the command device 1 is received by a plurality of mobile stations 3 existing in the service area of the base station 2 via the base station 2.
Further, the mobile stations 3 communicate with each other using the same channel within the group to share information.

[Configuration of conventional wireless communication device: FIG. 10]
Next, the configuration of the conventional wireless communication device (mobile station) will be described with reference to FIG. FIG. 10 is a schematic configuration diagram of a conventional wireless communication device.
As shown in FIG. 10, the conventional wireless communication device (mobile station) 300 is, for example, an in-vehicle wireless device mounted on a vehicle, and includes a wireless communication unit 301, an antenna 302, a vehicle battery 303, and an accessory device. It is equipped with an operation unit 305, a speaker microphone 306, and a handset 307.

The wireless communication unit 301 performs coding / decoding, modulation / demodulation, frequency conversion, etc. associated with wireless communication with the command device 1 via the base station 2 described above and individual communication with another mobile station 3 in the group. Signal processing is performed.
The wireless communication unit 301 is provided with a power switch (power switch) 304 for switching the power on / off of the entire wireless communication device.
The antenna 302 outputs the transmission signal from the wireless communication unit 301 to the air as a wireless signal, and outputs the received wireless signal to the wireless communication unit 301.
The vehicle battery 303 supplies a power supply voltage to each part of the wireless communication device 300.

Further, the wireless communication device 300 is provided with a plurality of accessory devices.
In the example of FIG. 10, as an accessory device, an operation unit 305, a speaker microphone 306, and a handset 307 are provided and are connected to the wireless communication unit 301, respectively.
The operation unit 305 is mounted on, for example, a dashboard of a vehicle and a user (member) performs various operations, and is provided with a display unit and various operation buttons.

The handset 307 is also provided on the dashboard or the like, and for example, a member holds it in his hand to input voice or perform operations such as switching wireless channels. Some are provided with a display unit.
The speaker microphone 306 amplifies the volume of the voice input from the microphone and outputs it to the outside.

In the conventional wireless communication device 300, when the power switch 304 of the wireless communication unit 301 is turned on, the power supply voltage is supplied from the vehicle battery 303 to the wireless communication unit 301, and further, the operation unit 305 and the speaker microphone 306 which are auxiliary devices. , The power supply voltage is also supplied to the handset 307.
That is, in the conventional wireless communication device 300, when the power of the wireless communication unit 301 is turned on, the power supply voltage is automatically supplied to all the accessory devices.

[Configuration example of conventional accessory device: FIG. 11]
Next, a configuration example of the conventional accessory device will be described with reference to FIG. FIG. 11 is an explanatory diagram showing a configuration example of a conventional accessory device. Here, the operation unit 305 shown in FIG. 10 is assumed as an accessory device.
As shown in FIG. 11, the conventional accessory device (operation unit 305) includes a wireless communication connection unit 501, a voltage conversion unit 502, an accessory device control unit 503, a display unit 504, and a switch interface unit (switch I /). F) 505 and the like.

The wireless communication connection unit 501 is an interface unit connected to the wireless communication unit 301 shown in FIG. 10, and exchanges information between the power supply line to which the power supply voltage is supplied from the wireless communication unit 301 and the wireless communication unit 301. The information transmission line to be performed is connected.
The voltage conversion unit 502 converts the power supply voltage input via the power supply line into a predetermined voltage used in the accessory device (operation unit 305) and supplies it to each unit.

The display unit 504 displays, for example, information on the channel used for the intra-group call.
The switch I / F505 is an interface unit connected to various switches.
The accessory device control unit 503 controls each unit in the accessory device via the information transmission line, and exchanges information with the wireless communication unit 301.

For example, when an instruction to change the channel used for the intra-group call is input from the switch I / F 505, the accessory device control unit 503 displays that fact on the display unit 504, and the channel change operation is performed. , The information of the changed channel is notified to the wireless communication unit 301 via the wireless communication connection unit 501.

[High temperature environment]
As described above, the operation unit 305 and the handset 307, which are auxiliary devices, may be installed on the dashboard of the vehicle, and the temperature of the dashboard surface rises to nearly 90 ° C. in summer.
When the power is turned on to the accessory device in such a high temperature environment, for example, the LCD (Liquid Crystal Display) screen of the handset may become black and the display contents may not be understood.

[Related technology]
As a conventional technique relating to a wireless communication device and a wireless communication system, there is Japanese Patent Application Laid-Open No. 2011-61686 "Wireless Communication Device" (Patent Document 1).
Patent Document 1 describes a wireless communication device that suppresses power consumption by setting a voltage value lower than a normal operating voltage when the temperature of the control unit rises.

Japanese Unexamined Patent Publication No. 2011-61686

As described above, the conventional wireless communication device has a problem that in a high temperature environment, the temperature of the electric component used for the accessory device exceeds the guaranteed operating temperature, which may cause a malfunction or damage.

Further, in the conventional wireless communication device, when the handset or the operation unit becomes inoperable in a high temperature environment, the wireless communication device cannot perform the channel change operation, and the wireless communication device is within the group. There was a problem that it became impossible to communicate with other wireless communication devices.

It should be noted that Patent Document 1 does not describe a configuration in which the power supply is cut off when the accessory device becomes high temperature.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent malfunction or damage to the accessory device in a high temperature environment.
Another object of the present invention is to make it possible to secure communication with another wireless communication device even when the wireless communication device is in an inoperable state of channel change.

The present invention for solving the problems of the above-mentioned conventional example is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device is inside the accessory device. It is equipped with a temperature sensor that detects the temperature of the device and outputs temperature information, and a control unit that controls whether or not to supply the power supply voltage from the wireless communication unit to each unit in the accessory device based on the temperature information. Is to detect the temperature inside the accessory device by receiving the drive voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device when the wireless communication unit is activated. , The control unit is equipped with a switch that shuts off the power supply voltage from the wireless communication unit, and if the switch is off in the initial state and indicates that the temperature information from the temperature sensor is normal, turn it on. When the power supply voltage is supplied to each part other than the temperature sensor in the accessory device to start the accessory device and the temperature information from the temperature sensor indicates that the temperature information is abnormal, the accessory device is kept off. It is characterized in that the power supply voltage to each part other than the temperature sensor inside is cut off to suppress the start-up of the accessory device.

Further, the present invention is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device detects the temperature in the accessory device and outputs temperature information. It is equipped with a temperature sensor that outputs , and when the wireless communication unit is activated, the temperature sensor receives the drive voltage that is supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and the accessory device. The wireless communication unit is attached from the power generation unit based on the power generation unit that generates the power supply voltage to be supplied to the accessory device and the temperature information received from the temperature sensor of the accessory device. The power supply voltage is supplied to each part other than the temperature sensor in the device to start the accessory device, or the power supply generation unit does not supply the power supply voltage to each part other than the temperature sensor in the accessory device to suppress the start-up of the accessory device. It is characterized by being equipped with a control unit.

Further, the present invention is characterized in that, in the wireless communication device, the temperature sensor is driven by a battery provided in the accessory device.

Further, the present invention is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device detects the temperature in the accessory device and outputs temperature information. It is equipped with a temperature sensor that outputs , and when the wireless communication unit is activated, the temperature sensor receives the drive voltage that is supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and the accessory device. The wireless communication unit or the accessory device detects the temperature inside, and supplies the power supply voltage from the wireless communication unit to each part other than the temperature sensor in the accessory device based on the temperature information to start the accessory device. A control unit for controlling whether or not to perform is provided, and the wireless communication unit has a first power supply voltage as a driving voltage for driving the temperature sensor and a power supply voltage for driving each part other than the temperature sensor of the accessory device. A power generation unit that generates a second power supply voltage is provided, the power supply generation unit supplies the first power supply voltage to the accessory device when the wireless communication unit is started, and the temperature sensor is supplied from the power supply generation unit. It is characterized by being driven by a power supply voltage of 1.

Further, the present invention is a wireless communication system including a plurality of wireless communication devices in a group and having a command device for transmitting a simultaneous command to a plurality of wireless communication devices in the group, and the wireless communication device performs wireless communication. It has a wireless communication unit and an accessory device connected to the wireless communication unit . The accessory device is equipped with a temperature sensor that detects the temperature inside the accessory device and outputs temperature information. When activated, it receives the drive voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and detects the temperature inside the accessory device. The accessory device includes a control unit that supplies the power supply voltage from the wireless communication unit based on the temperature information to each unit other than the temperature sensor in the accessory device to control whether or not to start the accessory device. When the temperature information indicating that it is abnormal is input from the temperature sensor, the abnormal temperature information of the accessory device and the channel information set in the accessory device are transmitted to the command device, and the command device is in the group. It is characterized in that the channel information is transmitted to another wireless communication device as a channel used in the group.

According to the present invention, it is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device detects the temperature in the accessory device and outputs temperature information. It is equipped with a temperature sensor that outputs and a control unit that controls whether or not to supply the power supply voltage from the wireless communication unit to each unit in the accessory device based on the temperature information. The temperature inside the accessory device is detected by receiving the drive voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and the control unit is from the wireless communication unit. If the switch is off in the initial state and indicates that the temperature information from the temperature sensor is normal, it is turned on except for the temperature sensor in the accessory device. If the power supply voltage is supplied to each part to start the accessory device and the temperature information from the temperature sensor indicates that the temperature information is abnormal, keep it off to each part other than the temperature sensor in the accessory device. Since it is a wireless communication device that shuts off the power supply voltage and suppresses the startup of the accessory device, if the accessory device becomes hot , the power to each part other than the temperature sensor is turned off, causing malfunction of the accessory device. It has the effect of preventing damage.

Further, according to the present invention, it is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device detects the temperature in the accessory device and the temperature. It is equipped with a temperature sensor that outputs information, and when the wireless communication unit is activated, the temperature sensor receives the drive voltage that is supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device. The wireless communication unit detects the temperature inside the accessory device, and the wireless communication unit is a power supply generation unit that generates a power supply voltage to be supplied to the accessory device and a power supply generation unit based on the temperature information received from the temperature sensor of the accessory device. Supply the power supply voltage to each part other than the temperature sensor in the accessory device to start the accessory device, or start the accessory device without supplying the power supply voltage to each part other than the temperature sensor in the accessory device from the power generation unit. Since it is a wireless communication device equipped with a control unit that suppresses the power supply, if the accessory device is in a high temperature state when the power is turned on, the power supply voltage is not supplied to each part other than the temperature sensor to prevent malfunction and damage. There is no need to install a switch on the accessory device, which has the effect of simplifying the configuration of the accessory device.

Further, according to the present invention, since the temperature sensor is the wireless communication device driven by the battery provided in the accessory device, it is not necessary to supply the voltage for the temperature sensor from the wireless communication unit, and the wireless communication is performed. There is an effect that the composition of the part can be simplified.
Further, according to the present invention, it is a wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit, and the accessory device detects the temperature in the accessory device and the temperature. It is equipped with a temperature sensor that outputs information, and when the wireless communication unit is activated, the temperature sensor receives the driving voltage that is supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device. It detects the temperature inside the accessory device, and the wireless communication unit or the accessory device supplies the power supply voltage from the wireless communication unit to each part other than the temperature sensor in the accessory device based on the temperature information. It is equipped with a control unit that controls whether to start or not, and the wireless communication unit has a first power supply voltage as a drive voltage for driving the temperature sensor and a power supply voltage for driving each part other than the temperature sensor of the accessory device. The power generation unit is provided with a power generation unit that generates a second power supply voltage, the power supply generation unit supplies the first power supply voltage to the accessory device when the wireless communication unit is started, and the temperature sensor is supplied from the power supply generation unit. Since it is a wireless communication device driven by the first power supply voltage, if the accessory device is in a high temperature state when the power is turned on, the power supply voltage should not be supplied to each part other than the temperature sensor to prevent malfunction or damage. It has the effect of preventing.

Further, according to the present invention, the wireless communication device is provided with a plurality of wireless communication devices in a group and has a command device for transmitting a simultaneous command to a plurality of wireless communication devices in the group, and the wireless communication device is a wireless communication. It has a wireless communication unit that performs wireless communication and an accessory device that connects to the wireless communication unit. The accessory device includes a temperature sensor that detects the temperature inside the accessory device and outputs temperature information, and the temperature sensor is wireless communication . When the unit starts up, it receives the drive voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and detects the temperature inside the accessory device. Alternatively, the accessory device is provided with a control unit that controls whether or not to activate the accessory device by supplying the power supply voltage from the wireless communication unit to each unit other than the temperature sensor in the accessory device based on the temperature information. When the communication unit inputs the temperature information indicating that it is abnormal from the temperature sensor, it sends the abnormal temperature information of the accessory device and the channel information set in the accessory device to the command device, and the command device groups. Since it is a wireless communication system that transmits the channel information as the channel used in the group to other wireless communication devices in the group, when the accessory device is in a high temperature state when the power is turned on, the power supply voltage is applied to each part other than the temperature sensor . By not supplying it, it is possible to prevent malfunction and damage of the accessory device, and the command device can identify the wireless communication device where the temperature abnormality has occurred and grasp the situation of the group, and the accessory device is in a high temperature state. The channel set in the wireless communication device that cannot change the channel can be set as the channel used for communication in the group, and the communication in the group of the wireless communication device that cannot change the channel can be secured. effective.

It is a schematic block diagram which shows the schematic structure of this wireless communication device. It is a block diagram of the structure of the wireless communication unit 31. It is a block diagram of the auxiliary device of this wireless communication device. It is a sequence diagram which shows the operation of this wireless communication system. Note that FIG. 4 shows a state during operation. It is a block diagram of the auxiliary device of the wireless communication device of application example (1). It is a block diagram of the auxiliary device of the wireless communication device of application example (2). It is a flowchart which shows the process at the time of power-on of the wireless communication part of application example (2). It is a flowchart which shows the process in operation of the wireless communication part 31 of application example (2). It is explanatory drawing which shows the configuration example of the wireless communication system which includes a command device and a mobile station. It is a schematic block diagram of the conventional wireless communication device. It is explanatory drawing which shows the configuration example of the conventional accessory device.

An embodiment of the present invention will be described with reference to the drawings.
[Outline of Embodiment]
The wireless communication device according to the embodiment of the present invention includes a wireless communication unit and an accessory device, the accessory device includes a temperature sensor that detects temperature and outputs temperature information, and the wireless communication unit or the accessory device includes. Based on the temperature information from the temperature sensor, each part in the accessory device is provided with a control unit that controls whether or not to supply the power supply voltage from the wireless communication unit, and the temperature information indicates an abnormality. In this case, by shutting off the power supply voltage from the wireless communication unit, it is possible to prevent the accessory device from malfunctioning or being damaged in a high temperature environment.

Further, in the wireless communication system according to the embodiment of the present invention, when the wireless communication unit inputs temperature information indicating an abnormality from the temperature sensor of the accessory device, the abnormality information of the temperature of the accessory device and its own device are obtained. The channel information set in is transmitted to the command device, and the command device transmits the channel information to other wireless communication devices in the group as the channel used in the group, and the temperature is abnormal. Therefore, even if the accessory device cannot be used and the channel cannot be changed, communication within the group can be secured and information can be shared within the group.

The basic configuration of the wireless communication system (the wireless communication system) according to the embodiment of the present invention is the same as the wireless communication system shown in FIG. Further, the wireless communication device (the present wireless communication device) according to the embodiment of the present invention corresponds to the mobile station in the present wireless communication system, but the wireless communication device of the present invention is not limited to the mobile station. It may be a fixed and used wireless communication device.
In this wireless communication device and this wireless communication system, the configuration and operation of the mobile station and command device are partially different from the conventional ones, and in particular, the power supply when it is detected that the accessory device is in a high temperature state. It features processing and channel control used in intra-group calls.

[Configuration of wireless communication device according to the embodiment: FIG. 1]
The configuration of the wireless communication device (the present wireless communication device) according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram showing a schematic configuration of the wireless communication device.
As shown in FIG. 1, the wireless communication device 30 includes a wireless communication unit 31, an antenna 32, a vehicle battery 33, an operation unit 35 as an accessory device, a speaker microphone 36, and a handset 37. The wireless communication unit 31 is provided with a power switch 34.

In this wireless communication device, the configuration and operation of the wireless communication unit 31 and the accessory device (here, the operation unit 35) are characteristic parts, and the other components are the same as in the conventional case, so the description thereof will be omitted. ..
The operation unit 35 accepts various operations of the user, and includes at least an operation button for setting and changing a communication channel. Therefore, in this wireless communication device, it is assumed that the communication channel cannot be changed unless the operation unit 35 moves.

The characteristic part of this wireless communication device will be described.
The operation unit 3, which is an accessory device of the wireless communication device, includes a temperature sensor 38.
The temperature sensor 38 detects the temperature of the operation unit 35, and outputs temperature information indicating "normal" if the detected temperature is equal to or lower than a preset reference temperature (threshold). For example, FIG. 1 As shown in the above, when the operation unit 35 is left in the high temperature region and exceeds the reference temperature, the temperature information indicating "abnormality" is output.
Here, the temperature sensor 38 operates at a voltage lower than the voltage at which the main body of the operation unit 35 operates.

Further, although not shown in FIG. 1, the operation unit 35 of the wireless communication device is provided with a switch for switching whether to supply (on) or not (off) the power supply voltage to each part of the operation unit 35. .. The switch is off before the power is turned on.
However, the temperature sensor 38 is connected to the wireless communication unit 31 without going through a switch, and is supplied with a power source for driving.

The wireless communication unit 31 performs wireless communication as in the conventional case, supplies a power supply voltage to the accessory device, and is characterized by a temperature sensor provided in the accessory device when the power is turned on (startup). A low voltage for 38 is generated and supplied to the temperature sensor 38.

The operation when the power of this wireless communication device is turned on will be briefly described.
When the power switch 34 of the wireless communication unit 31 is turned on, the wireless communication unit 31 generates a voltage for the temperature sensor 38 and supplies power (low voltage) only to the temperature sensor 38.
When the temperature sensor 38 outputs temperature information indicating "normal", the operation unit 35 detects it and autonomously turns it on to supply a power supply voltage to the entire operation unit 35.

When the temperature sensor 38 outputs the temperature information indicating "abnormality", the switch remains off and the power supply voltage is not supplied to the main body of the operation unit 35.
As a result, when the operating unit 35 is at a high temperature, the power supply voltage is not supplied, and it is possible to prevent malfunction or damage of the device.

Here, a case where the temperature sensor 38 is provided in the operation unit 35 as an example of the accessory device will be described, but the temperature sensor may also be provided in the speaker microphone 36 and the handset 37, and the configuration and operation of the operation unit 35 may be provided. Same as the case.

[Structure of wireless communication unit 31: FIG. 2]
Next, the configuration of the wireless communication unit 31 of the wireless communication device will be described with reference to FIG. FIG. 2 is a block diagram of the wireless communication unit 31.
As shown in FIG. 2, the wireless communication unit 31 includes a wireless unit 41, an antenna 42, a control unit 43, a vehicle battery connection unit 44, a power switch (SW) 45, and accessory device connection units 47a and 47b. It is equipped with 47c. The antenna 42 is equivalent to the antenna 32 shown in FIG. 1, and the power switch 45 is a portion equivalent to the power switch 34 shown in FIG.

Each part of the wireless communication unit 31 will be described.
The wireless unit 41 performs various signal processing associated with wireless communication.
The vehicle battery connection unit 44 is connected to the vehicle battery 33 shown in FIG.
The accessory device connection units 47a, 47b, and 47c (referred to as the accessory device connection unit 47) are interface units connected to the accessory device, and are connected to the operation unit 35, the speaker microphone 36, and the handset 37, respectively.

Although not shown, a power supply line and an information transmission line are provided between the accessory device connection unit 47 and the control unit 43, and between the accessory device connection unit 47 and the corresponding accessory device. ing.
Here, for the sake of simplicity, the power supply voltage supply line (thick line), the low voltage supply line for the temperature sensor (thin line), and the information transmission line (dotted line) are described only in the accessory device connection portion 47a. However, the accessory device connection portions 47b and 47c are omitted.

The control unit 43 controls the entire wireless communication unit 31 of the wireless communication device, and includes a power generation unit 46.
The power generation unit 46 is a characteristic part of the wireless communication device, and supplies a power supply voltage (for example, 13.8V) supplied from the vehicle battery 33 via each part of the wireless communication unit 31 and each accessory device connection unit 47. It is supplied to the device, converted into a low voltage for driving the temperature sensor 38 (temperature sensor voltage, 3 to 5 V, for example, 5 V), and supplied to the accessory device connection portion 47a.
When the speaker microphone 36 and the handset 37 are also provided with the temperature sensor, the temperature sensor voltage is also supplied to the corresponding accessory device connection portions 47b and 47c.
Further, the power generation unit 46 supplies the power supply voltage to each unit of the wireless communication unit 31 as in the conventional case.

Then, when the power switch 45 is turned on, the power supply voltage is supplied from the vehicle battery 33 to the power generation unit 46 via the vehicle battery connection unit 44.
The power supply generation unit 46 supplies the same power supply voltage (13.8V) to each part of the wireless communication unit 31 and the accessory device connection unit 47, and generates a temperature sensor voltage (5V) to generate the temperature sensor connection unit 47a. Output to.
As a result, the power supply voltage and the temperature sensor voltage are supplied to the operation unit 35 connected to the accessory device connection unit 47a. The power supply voltage (13.8V) corresponds to the first power supply voltage described in the claim, and the temperature sensor voltage (5V) corresponds to the second power supply voltage.

Further, the power generation unit 46 generates a voltage higher than the temperature sensor voltage (for example, 13.8V) in order to activate the entire operation unit 35, and outputs the voltage to the accessory device connection unit 47a.
Further, when the alarm information indicating the temperature abnormality is input from the accessory device connection unit 47a, the control unit 43 of the wireless communication unit 31 attaches the ID (ID of the mobile station) of the wireless communication device and causes the temperature abnormality. Alarm information indicating that it has occurred is generated and transmitted to the command device via the radio unit 41. This process will be described later.

[Configuration of accessories: Fig. 3]
Next, the configuration of the accessory device (this accessory device) of the wireless communication device will be described with reference to FIG. FIG. 3 is a block diagram of an accessory device of the wireless communication device. Here, the operation unit 35 is assumed as an accessory device.
As shown in FIG. 3, the accessory device includes a wireless communication connection unit 51, a voltage conversion unit 52, an accessory device control unit 53, a display unit 54, a switch I / F 55, a temperature sensor 57, and a switch ( It is equipped with SW) 58.

The voltage conversion unit 52, the accessory device control unit 53, the display unit 54, and the switch I / F 55 are the conventional voltage conversion unit 502, the accessory device control unit 503, the display unit 504, and the switch I / F 505 shown in FIG. 11, respectively. Since they are equivalent, the description thereof is omitted here.

The wireless communication connection unit 51 is connected to the wireless communication unit 31, and is connected to the wireless communication unit 31 by a power supply line and an information transmission line (not shown).
Here, the thick line indicates the power supply line for supplying the power supply voltage, and the thin line indicates the voltage supply line for the temperature sensor. That is, the accessory device receives two types of power supplies. The information transmission line is omitted.

The temperature sensor 57 is the same as the temperature sensor 38 shown in FIG. 1, and detects the temperature of the accessory device (operation unit) 35, and when it detects that it is in a high temperature state, it indicates temperature information indicating "abnormality". Is output.
Specifically, the temperature sensor 57 receives "normal" temperature information if the detected temperature is equal to or less than a preset reference value (threshold value), and "abnormal" if the detected temperature exceeds the threshold value. The temperature information of is output to the switch 58 and the wireless communication connection unit 51 via the information transmission line.

The temperature sensor 57 may output temperature information indicating "abnormality" as alarm information only when the detected temperature exceeds the threshold value.
Further, the temperature sensor 57 is driven by a temperature sensor voltage (5V) lower than the power supply voltage of the operation unit 35 main body, and is constantly used for the temperature sensor from the wireless communication connection unit 51 after the power of the wireless communication device is turned on. The voltage may be supplied, or the power may not be supplied after the power is turned on.
That is, when the power generation unit 46 receives the temperature information indicating normality from the temperature sensor 57, the power supply generation unit 46 may stop supplying the power supply voltage to the temperature sensor 57. This can reduce power consumption.

The switch 58 is a characteristic part of the wireless communication device, and switches the power supply voltage supply to the voltage conversion unit 52 on or off based on the temperature information from the temperature sensor 57. The switch 58 corresponds to the control unit described in claim.
The switch 58 is off in the state before the power is turned on (initial state), and the power supply voltage is not supplied to each part of the operation unit 35 immediately after the power of the wireless communication device is turned on. FIG. 3 shows a state immediately after the power is turned on, and the switch 58 is off.
Then, when "normal" temperature information is input from the temperature sensor 57, the switch 58 is switched on to supply a power supply voltage to the voltage conversion unit 52, and a voltage is supplied from the voltage conversion unit 52 to each unit.

[Operation of accessory device: Fig. 3]
When the power switch 45 of the wireless communication unit 31 is turned on, the wireless communication connection unit 51 of the accessory device (operation unit 35) is connected to the power supply voltage (13.8V) and the temperature sensor from the power generation unit 46 of the wireless communication unit 31. A voltage (5V) is supplied. Here, the power supply voltage is supplied to the switch 58, and the temperature sensor voltage is supplied to the temperature sensor 57. The switch 58 is off at this point and no power supply voltage is supplied to other parts.

Then, the temperature sensor 57 detects the temperature and outputs temperature information indicating "normal" or "abnormal".
When the temperature information from the temperature sensor 57 is "normal", the switch 58 switches on and outputs the power supply voltage to the voltage conversion unit 52.
If the temperature information is "abnormal", the switch 58 remains off, the power supply voltage is not output to the voltage conversion unit 52, and the operation unit 35 does not operate.
As a result, even if the power is turned on when the temperature is high, the operation unit 35 will not malfunction or be damaged.

Further, the temperature information output from the temperature sensor 57 to the wireless communication connection unit 51 is input to the control unit 43 of the wireless communication unit 31, and if the temperature information is "abnormal", the command device 1 is notified to that effect. To.
The operation of this wireless communication system when a temperature abnormality occurs will be described later.

[Operation of this wireless communication system: Fig. 4]
Next, the operation of the wireless communication system when a temperature abnormality occurs in the accessory device of the wireless communication device will be described with reference to FIG. FIG. 4 is a sequence diagram showing the operation of the wireless communication system. Note that FIG. 4 shows a state during operation.
As shown in FIG. 4, when the temperature sensor 57 detects a temperature abnormality in the accessory device (operation unit) 35 of the mobile station (this wireless communication device) 30 of the wireless communication system during operation (S1), the temperature sensor 57 outputs temperature information (temperature alarm) indicating "abnormality" to the switch 58 and the wireless communication unit 31 (S2).

Further, the switch 58 of the accessory device 35 is turned off when the temperature alarm information is input, and the power supply voltage supply to each part of the accessory device 35 is stopped (S3). The order of processing S2 and processing S3 may be reversed.
As a result, in the accessory device 35, the operation is stopped except for the temperature sensor 57 and the switch 58, and operations such as channel change cannot be performed.

Then, when the control unit 43 of the wireless communication unit 31 receives the temperature alarm information from the accessory device 35, it uploads to the command device 1 that a temperature abnormality has occurred in the accessory device (upload of high temperature alarm information). At that time, the wireless communication unit 31 attaches the ID of the own device (mobile station) and the channel information set in the own device to notify the temperature abnormality (S4).

When the command device 1 is notified of the temperature abnormality from the mobile station 30, the command device 1 has the mobile station 3 (here, the mobile station (2)) in all the groups based on the channel information included in the uploaded information. )) Instructed to set the channel as a channel for communication within the group by simultaneous communication (instruction to use the same channel) (S5).
By notifying the temperature abnormality from the mobile station 30, the command device 1 can recognize the mobile station 30 having a defect in the temperature abnormality and grasp the situation.

Upon receiving the same channel usage instruction, the mobile station 3 in the group sets a designated channel as a channel for communication within the group (same channel setting) (S6).
As a result, even if the accessory device is turned off and the channel change operation cannot be performed in the mobile station 30 in which the temperature abnormality has occurred, the channel is set so that the other mobile station 3 matches the channel of the mobile station 30. Therefore, the mobile station 30 whose temperature has become abnormal can continue the communication within the group as it is.

If the temperature of the accessory device that has become abnormal in temperature returns to normal in the mobile station that is the notification source of the high temperature alarm, the command device 1 is notified to that effect, and the command device 1 informs all mobile stations. On the other hand, the same channel usage instruction cancellation is simultaneously communicated.
At the same time, at the mobile station from which the high temperature alarm is notified, the switch of the accessory device is turned on and the power supply is restarted.

[Application example (1)]
Next, an application example (1) of this wireless communication device will be described with reference to FIG. FIG. 5 is a block diagram of an accessory device of the wireless communication device of the application example (1).
As shown in FIG. 5, the accessory device (here, the operation unit) 351 of the application example (1) includes a battery 59 that supplies a driving voltage to the temperature sensor 57.
The battery 59 outputs a voltage of 3 to 5 V.
That is, the temperature sensor 57 is not supplied with the voltage for the temperature sensor from the wireless communication connection unit 51, but is supplied from the battery 59.

In the accessory device 351, the configuration and operation of the temperature sensor 57 and other parts are the same as those of the accessory device of the present wireless communication device described above, and are designated by the same reference numerals.
Further, the basic configuration of the wireless communication unit of the application example (1) is the same as that of FIG. 2, and will be described using the same reference numerals as those of FIG. 2, but the power supply generation unit 46 does not generate the voltage for the temperature sensor.

As described above, according to the application example (1), the accessory device 351 is provided with the battery 59 for supplying the voltage for the temperature sensor, so that the power generation unit 46 of the wireless communication unit 31 can generate the power supply voltage from the vehicle battery. It is not necessary to convert the voltage to the voltage for the temperature sensor, and the power supply line from the wireless communication unit 31 to the accessory device 351 is only one of 13.8V, so that the configuration of the entire wireless communication device can be simplified. It is a thing.

[Application example (2): Fig. 6]
Next, an application example (2) of this wireless communication device will be described with reference to FIG. FIG. 6 is a block diagram of an accessory device of the wireless communication device of the application example (2).
As shown in FIG. 6, the accessory device (here, the operation unit) 352 of the application example (2) does not include the switch 58. The control unit 43 (power generation unit 46) of the wireless communication unit 31 controls the on / off of the power supply voltage supply to the accessory device 352.
The operation of the temperature sensor 57 is the same as that of the present wireless communication device described above, but the temperature information is output only to the wireless communication unit 31 via the wireless communication connection unit 51.
Other components are the same as the accessory devices of this wireless communication device.

Further, since the basic configuration of the wireless communication unit of the application example (2) is the same as the wireless communication unit 31 of the wireless communication device shown in FIG. 2, the same reference numerals will be used for description, but the control unit. The processing of 43 is partially different.

[Operation when the power of the wireless communication unit of application example (2) is turned on: FIG. 7]
Next, the operation of the wireless communication unit of the application example (2) when the power is turned on will be described with reference to FIG. 7. FIG. 7 is a flowchart showing a process when the power of the wireless communication unit of the application example (2) is turned on.
As shown in FIG. 7, when the power is turned on, the control unit 43 of the wireless communication unit 31 of the application example (2) supplies the temperature sensor voltage generated by the power generation unit 46 to the accessory device 352 ( 100). At this point, the power supply voltage to the main body of the accessory device 352 is not supplied.
Then, the control unit 43 of the wireless communication unit 31 determines whether or not the temperature information from the temperature sensor 57 of the accessory device 352 has been received (102), and if not (No), the control unit 43 waits for the temperature information.

When the temperature information was received in the process 102 (in the case of Yes), the control unit 43 determined whether or not the received temperature information indicates "normal" (104), and was not "normal". In the case (No), the process returns to the process 102 to wait for the temperature information. That is, the control unit 43 suppresses the supply of the power supply voltage from the power supply generation unit 46 to the main body of the accessory device 352.

Further, in the process 104, if the temperature information is "normal" (in the case of Yes), the control unit 43 supplies the power supply voltage from the power source generation unit 46 to the accessory device 352 (106), and ends the process.
As a result, when the temperature of the accessory device 352 is within the normal range, the power supply voltage is supplied to each part of the accessory device 352.

As described above, in the application example (2), when the power is turned on, the power supply voltage is supplied only when the temperature of the accessory device 352 is normal, and is not supplied when the temperature is abnormal, and the accessory device 352 is in a high temperature state. In this case, it is possible to prevent malfunction or damage due to supply of power supply voltage.
Further, it is not necessary to provide the accessory device with a switch for switching on / off of the power supply, and the configuration of the accessory device can be simplified.

[Operation during operation of the wireless communication unit of application example (2): FIG. 8]
Next, the operation of the wireless communication unit of the application example (2) during operation will be described with reference to FIG. FIG. 8 is a flowchart showing a process during operation of the wireless communication unit 31 of the application example (2).
As shown in FIG. 8, when the control unit 43 of the wireless communication unit 31 of the application example (2) listens for the temperature information from the accessory device 352 (200) and receives it (in the case of Yes), the temperature information is "normal". It is determined whether or not it indicates (202), and if it is normal, the power supply voltage is supplied to the accessory device 352 (204).

Further, in the process 202, when the temperature information is not normal (No), the control unit 43 stops supplying the power supply voltage to the accessory device 352 (210), and the command device 1 has a temperature abnormality. Upload that an alarm has occurred (upload high temperature alarm information) (212).
As a result, when the temperature of the accessory device 352 becomes high during operation, the power supply voltage is cut off, and malfunction or damage can be prevented.

When the high temperature alarm information is uploaded, the command device 1 simultaneously transmits the same channel usage instruction to the mobile stations in the group according to the sequence of FIG.
However, the wireless communication unit 31 continues to supply the temperature sensor voltage to the accessory device 352.

Then, the control unit 43 of the wireless communication unit 31 continues to listen for the temperature information from the temperature sensor of the accessory device, determines whether the received temperature information is normal (214), and if it is not normal (No), Return to process 212 and continue monitoring the temperature information.

Further, if the received temperature information is normal in the process 214 (in the case of Yes), the control unit 43 uploads to the command device 1 that the alarm state has been canceled after recovering from the temperature abnormality (high temperature alarm cancellation). Upload) (216).
Then, the control unit 43 shifts to the process 204 and supplies the power supply voltage to the accessory device 352.
In this way, the operation of the wireless communication unit 31 of the application example (2) is performed.

[Configuration with battery]
Although the voltage for the temperature sensor 57 is received from the wireless communication unit in FIG. 6, the configuration may be such that the voltage is supplied from the battery as in the application example (1) shown in FIG.
In that case, the power generation unit of the wireless communication unit does not need to generate the voltage for the temperature sensor.

[Effect of embodiment]
According to the wireless communication device according to the embodiment of the present invention, the accessory device 35 has a temperature sensor 57 that outputs temperature information indicating whether the temperature is normal or abnormal, and a power supply voltage from the wireless communication unit 31 to the accessory device 35. A switch 58 for switching supply (on) / cutoff (off) of the switch 58 is provided, and when the temperature information from the temperature sensor 57 is normal, the switch 58 is turned on to supply the power supply voltage from the wireless communication unit 31. When it is supplied and the temperature information is abnormal, it is turned off to shut off the power supply voltage from the wireless communication unit 31, and the accessory device 35 malfunctions or is damaged in a high temperature environment. It has the effect of preventing.

Further, according to the present wireless communication system, when the wireless communication unit 31 inputs the temperature information indicating "abnormality" from the temperature sensor 57 of the accessory device 35, the information indicating that the temperature of the accessory device 35 is abnormal is used. , The channel information used before the abnormality is attached and transmitted to the command device 1 as high temperature alarm information, and the command device 1 is used as a channel for intra-group communication to all wireless communication devices in the group. , Even if there is a wireless communication device in which the accessory device 35 cannot be used due to a temperature abnormality and the channel cannot be changed, communication within the group is secured and communication within the group is secured. It has the effect of being able to share information.

Further, according to the wireless communication device of the application example (1) of the present embodiment, since the temperature sensor 57 is driven by the battery 59, the power supply generation unit 46 that generates the temperature sensor voltage in the wireless communication unit 31. There is an effect that the configuration of the wireless communication unit 31 can be simplified without providing the above.

Further, according to the wireless communication device of the application example (2) of the present embodiment, the accessory device 352 is not provided with a switch, and the control unit 43 of the wireless communication unit 31 has normal temperature information from the temperature sensor 57. In that case, the power supply voltage is supplied to the accessory device 352, and when the temperature information is abnormal, the power supply voltage to the accessory device 352 is cut off. It has the effect of preventing damage and simplifying the configuration of the accessory device 352.

In the above-described embodiment, the temperature information from the temperature sensors 38 and 57 is an example of whether or not the temperature is equal to or higher than the threshold value, that is, information indicating normality / abnormality. However, the temperature information may be the information of the temperature itself detected by the temperature sensors 38 and 57.
In this case, in the application example (2), a process is added in which the control unit 43 determines whether the temperature information from the temperature sensor is normal or abnormal by comparing it with a threshold value stored in advance. Further, such a process may be performed by the switch 58 of the above-described embodiment including a determination circuit and a processing unit.

The present invention is a wireless communication device and wireless communication that can prevent malfunction or damage of the accessory device in a high temperature environment and secure communication with other mobile stations even in a state where the channel change cannot be operated. Suitable for the system.

1 ... Command device, 2 ... Base station, 3 ... Mobile station, 30,300 ... Wireless communication device (mobile station), 31,301 ... Wireless communication unit, 32,42,302 ... Antenna, 33,303 ... Vehicle battery, 34,45,304 ... power switch, 35,305,351,352 ... operation unit, 36,306 ... speaker microphone, 37,307 ... handset, 38,57 ... temperature sensor, 41 ... wireless unit, 43 ... control unit, 44 ... vehicle battery connection unit, 46 ... power generation unit, 47 ... accessory device connection unit, 51,501 ... wireless communication connection unit, 52,502 ... voltage conversion unit, 53,503 ... accessory device control unit, 54,504 ... Display, 55,505 ... Switch I / F, 58 ... Switch, 59 ... Battery

Claims (5)

A wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit.
The accessory device,PreviousA temperature sensor that detects the temperature inside the accessory device and outputs temperature information, and a control that controls whether or not to supply the power supply voltage from the wireless communication unit to each unit in the accessory device based on the temperature information. With a department,
When the wireless communication unit is activated, the temperature sensor receives a driving voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and receives the temperature in the accessory device. Is to detect
The control unit includes a switch that cuts off the power supply voltage from the wireless communication unit.
If the switch is initially off and indicates that the temperature information from the temperature sensor is normal, turn it on and in the accessory device.Other than the temperature sensorWhen the power supply voltage is supplied to each part to start the accessory device and the temperature information from the temperature sensor indicates that the temperature information is abnormal, the power supply voltage is kept off and the accessory device is in the accessory device.Other than the temperature sensorA wireless communication device characterized in that the power supply voltage to each part is cut off to suppress the start-up of the accessory device. A wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit.
The accessory device,PreviousEquipped with a temperature sensor that detects the temperature inside the attached device and outputs temperature information.
When the wireless communication unit is activated, the temperature sensor receives a driving voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and receives the temperature in the accessory device. Is to detect
The wireless communication unit is the accessory.To the placeBased on the temperature information received from the power generation unit that generates the power supply voltage to be supplied and the temperature sensor of the accessory device, the power supply generation unit can be used in the accessory device.Other than the temperature sensorA power supply voltage is supplied to each part to start the accessory device, or the power supply generation unit is used in the accessory device.Other than the temperature sensorA wireless communication device characterized by being provided with a control unit that does not supply a power supply voltage to each unit and suppresses the activation of the accessory device. The wireless communication device according to claim 1 or 2, wherein the temperature sensor is driven by a battery provided in the accessory device. A wireless communication device having a wireless communication unit that performs wireless communication and an accessory device connected to the wireless communication unit.
The accessory device,PreviousEquipped with a temperature sensor that detects the temperature inside the attached device and outputs temperature information.
When the wireless communication unit is activated, the temperature sensor receives a driving voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and receives the temperature in the accessory device. Is to detect
The wireless communication unit or the accessory device is from the wireless communication unit based on the temperature information.SaidPower supply voltage in the accessory deviceOther than the temperature sensorIt is equipped with a control unit that supplies to each unit and controls whether or not to activate the accessory device.
The wireless communication unit drives the temperature sensor.As the driving voltageThe first power supply voltage and the accessory deviceOther than the temperature sensorDrive each partAs the power supply voltageIt has a power generation unit that generates a second power supply voltage.
The power generation unit supplies the first power supply voltage to the accessory device when the wireless communication unit is started, and the temperature sensor is driven by the first power supply voltage supplied from the power generation unit. A wireless communication device characterized by the fact that. A wireless communication system having a plurality of wireless communication devices in a group and having a command device for transmitting a simultaneous command to a plurality of wireless communication devices in the group.
The wireless communication device has a wireless communication unit that performs wireless communication and an accessory device that connects to the wireless communication unit.
The accessory device includes a temperature sensor that detects the temperature inside the accessory device and outputs temperature information.
When the wireless communication unit is activated, the temperature sensor receives a driving voltage supplied before the power supply voltage is supplied to each part other than the temperature sensor in the accessory device, and receives the temperature in the accessory device. Is to detect
Whether the wireless communication unit or the accessory device supplies the power supply voltage from the wireless communication unit to each unit other than the temperature sensor in the accessory device to activate the accessory device based on the temperature information. Equipped with a control unit to control whether or not to use
When the wireless communication unit inputs temperature information indicating that the temperature sensor is abnormal, the wireless communication unit transmits the temperature abnormality information of the accessory device and the channel information set in the accessory device to the command device. ,
The command device is a wireless communication system characterized in that the channel information is transmitted to another wireless communication device in the group as a channel used in the group.

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