JP2001285844A - Radio repeating and monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio repeating and monitoring system constituting a monitoring system capable of coping with the constitution of the monitoring system and the change of a monitoring area flexibly in accordance with the situation of the change, magnification, reduction, etc., of the monitoring area. SOLUTION: The radio repeating and monitoring system is provided with monitoring means 406 to 410, 442 for monitoring the input of a video signal, a sound signal and an abnormal data signal to be inputted singly or compositely, receiving means 450, 443, 411, 412 for receiving the radio signals of radio waves, light and electromagnetic waves from outside and retransmission means 450, 443, 410 and 413 for resending radio signals received from outside by the radio of radio waves, light and electromagnetic waves, and is arranged in a monitoring area to monitor its own monitoring range and to repeat the radio signal received from outside to transmit it by radio to outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless relay monitoring apparatus for transmitting and receiving monitoring information collected by a monitoring camera, a microphone, or the like to notify an abnormality, and more particularly, to relaying other monitoring information while transmitting its own monitoring information. The present invention relates to a wireless relay monitoring system provided with a wireless relay monitoring device that collects monitoring information over a wide area.

[0002]

2. Description of the Related Art Conventionally, as this kind of abnormality monitoring system, there has been one shown in FIGS. FIG.
In, a camera is installed in a building to monitor a factory, a house, or a restricted area, and the imaging range of the camera covers the monitoring range 101 or the monitoring areas 110 to 115. For example, as means for monitoring the periphery of the office 102 within the monitoring range 101, the office 102
Surveillance cameras 103, 104, 10
5, 106, 107, and 108, and the camera 101
An abnormality monitoring system for transmitting a video signal of −108 to the center device 109 via a cable and performing a monitoring operation is generally used.

As shown in FIG. 11, a conventional abnormality monitoring system includes cameras 201, 202, and 2 for outdoor monitoring.
03, 204, etc., are connected to the switcher 205, and the controller 207 is connected to the controller 207 according to the monitoring purpose.
Controls the angles of the cameras 101-104, enlargement and reduction of images, and the like, and monitors them using the monitor 206.

In such a conventional abnormality monitoring system, a coaxial cable is provided between a camera and a center device to constitute the system. Furthermore, in the above-mentioned conventional abnormality monitoring system, the components are connected by coaxial cables, etc., so that the transmission system design is easy. was there.

[0005]

In the use of the above-described conventional abnormality monitoring system, outdoor monitoring is generally performed by fixed monitoring in which a monitoring camera is attached to a building in a monitoring area or an outdoor pole for monitoring. It was a target.
In addition, for monitoring with indoor images, a surveillance camera is attached to a building in the surveillance area, and a place where an intruder easily enters is mainly monitored.

However, it is necessary to change the position and direction of the surveillance camera in the surveillance area due to the season, the surveillance mode, the change of the surveillance area, or the change of conditions outside the surveillance area. For example, trees in the surveillance area drop leaves during the winter, so you can see intruders and abnormalities in the surveillance area even when monitoring from the rooftop, but if the trees grow many leaves in the summer, , Because it is blocked by leaves and can not be monitored from above,
By taking images in the monitoring area from a low place,
We have a seasonal response. Further, there are cases where it is necessary to easily change and increase the monitoring area, for example, the range of the monitoring area is expanded as the office is expanded, or the monitoring area is frequently changed. Also,
In the case of monitoring over a railroad, river, or road, it is difficult to install the conventional monitoring system because of the necessity of a transmission cable. Therefore, in a conventional surveillance system which is equipped with a fixed surveillance camera and requires a transmission cable, as described above, even if the situation changes, it cannot be changed in real time according to the situation. There has been a problem that the monitoring by the conventional monitoring system is limited because there are cases where it is impossible to install or change the cable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and is intended to monitor an area where a wired cable cannot be routed, and to configure a monitoring system according to a situation such as a change, enlargement, or reduction of the monitoring area. And a wireless relay monitoring system provided with a wireless relay monitoring device capable of flexibly coping with a change in a monitoring area.

[0008]

A wireless relay monitoring system according to the present invention is a wireless relay monitoring system having a plurality of wireless relay monitoring devices and a center device, wherein the first wireless relay monitoring device outputs a video signal. Camera, a microphone that outputs an audio signal, a sensor that outputs an abnormal signal when an abnormality is detected, and an abnormality monitor that outputs a monitoring signal including at least one of the video signal, the audio signal, and the abnormal signal Means, receiving means for receiving the wireless monitoring signal output from the second wireless relay monitoring device, multiplexing the monitoring signal output from the abnormality monitoring means, the wireless monitoring signal received by the receiving means, Transmitting means for transmitting a multiplexed radio monitoring signal to the center device, wherein the center device transmits the multiplexed radio monitoring signal via the first radio relay monitoring device. It has a configuration that includes a receiving means for receiving the multiplexed radio monitoring signal. With this configuration, the monitoring information can be transmitted wirelessly to monitor areas where wired cables cannot be routed, and to flexibly change the configuration of the monitoring system or change the monitoring area according to situations such as changing, expanding, or reducing the monitoring area. I can deal with it.

A wireless relay monitoring system according to the present invention comprises:
When the sensor outputs the abnormal signal, the first wireless relay monitoring device does not receive the wireless monitoring signal,
It is configured to include an abnormal data priority transmission unit that transmits only the monitoring signal. With this configuration, the center device can quickly send an abnormality by transmitting a monitoring signal generated when its own abnormality monitoring unit detects an abnormality to the center device in preference to a relay signal from another wireless relay monitoring device. Can be dealt with.

[0010] The wireless relay monitoring system according to the present invention comprises:
When the sensor outputs the abnormality signal, the abnormality monitoring means of the first wireless relay monitoring device, the abnormality signal,
It is configured to output a monitoring signal including the video signal and the audio signal. With this configuration, when an abnormality occurs, the content of the abnormality can be easily confirmed by transmitting the video signal and the audio signal.

[0011] The wireless relay monitoring system according to the present invention comprises:
The first wireless relay monitoring device includes an onomatopoeia generating unit that generates an onomatopoeic sound, and has a configuration in which the onomatopoeic noise generating unit generates an onomatopoeic sound when the sensor outputs the abnormal signal. With this configuration, when an abnormality occurs, a video signal, an audio signal, and abnormal data are transmitted, and an imitation sound is generated, thereby intimidating an intruder and obtaining an image at that time.

[0012] The wireless relay monitoring system according to the present invention comprises:
The first wireless relay monitoring device includes a light emitting unit that emits light, and the light emitting unit emits light when the sensor outputs the abnormal signal. With this configuration, in the event of an abnormality, a video signal, an audio signal, and abnormal data are transmitted, and light is emitted and photographed, so that an intruder can be clearly captured and a necessary image can be obtained. .

[0013] The wireless relay monitoring system according to the present invention comprises:
The first wireless relay monitoring device includes storage means for storing at least one of the video signal and the audio signal, wherein the storage means stores at least one of the video signal and the audio signal for a predetermined time; When the sensor outputs the abnormal signal, the transmitting means transmits at least one of the video signal and the audio signal stored in the storing means. With this configuration, when an abnormality is detected by the abnormality monitoring unit, a video signal, an audio signal, and an abnormal data signal stored in the storage unit in advance are read from the storage unit and transmitted to the center device. Detailed information before and after can be obtained.

[0014] The wireless relay monitoring system according to the present invention comprises:
The first wireless relay monitoring device includes a motion detecting unit that detects a change in the video signal, and when the motion detecting unit detects an abnormality, the transmitting unit transmits at least one of the video signal and the audio signal. It has a configuration to transmit to the center device. With this configuration, when a video signal different from the previous video signal is input, the video signal and the audio signal are transmitted together with the monitoring signal for abnormality detection, so that the occurrence of the abnormality can be easily confirmed. .

[0015] The wireless relay monitoring system according to the present invention comprises:
When the motion detection means detects an abnormality, at least one of the video signal and the audio signal stored in the storage means is transmitted to the center device. With this configuration, it is considered that an abnormality has occurred when a video signal different from the previous video signal is input, and the video signal and the audio signal from a predetermined time before are immediately read out from the storage means and immediately before and after the occurrence of the abnormality. Detailed information can be obtained.

The wireless relay monitoring system according to the present invention comprises:
The first wireless relay monitoring device includes audio level detection means for detecting the level of the audio signal, and when the audio level detection means detects an abnormality exceeding a predetermined level, the video signal and the audio signal are detected. At least one is transmitted to the center device. With this configuration, when an audio signal having a different level from the previous audio signal is input, a video signal and an audio signal are transmitted together with the monitoring signal for abnormality detection, so that the occurrence of an abnormality can be easily confirmed. Becomes

The wireless relay monitoring system according to the present invention comprises:
When the audio level detection means detects an abnormality exceeding a predetermined level, at least one of the video signal and the audio signal stored in the storage means is transmitted to the center device. With this configuration, it is considered that an abnormality has occurred when an audio signal having a level different from that of the previous audio signal is input, and the video signal and the audio signal immediately before the predetermined time are read from the storage unit and the abnormality is detected. Detailed information before and after the occurrence can be obtained.

The wireless relay monitoring system according to the present invention comprises:
It is provided with a plurality of antennas for transmitting and receiving a plurality of different frequencies of relay radio waves, and has a configuration in which the antenna is selectively used with respect to fluctuations in the received electric field. With this configuration, the radio wave to be transmitted is relayed via a plurality of different frequency channels, so that it is possible to prevent reception disturbance due to electric field fluctuation.

The wireless relay monitoring system according to the present invention comprises:
It has a configuration in which a solar cell as a power supply and a storage battery charged from the solar cell are provided, and the power supply type is used. With this configuration, the power supply type including the solar battery and the storage battery charged from the solar battery as a power supply can be installed in any place.

The wireless relay monitoring system according to the present invention comprises:
The wireless relay monitoring device has a plurality of cameras, and the transmitting means transmits the plurality of video signals to the center device simultaneously. With this configuration, all directions in the monitoring range are monitored by the plurality of imaging units, and a plurality of obtained images are simultaneously transmitted, so that all locations in the monitoring range can be monitored simultaneously.

The wireless relay monitoring system according to the present invention comprises:
The wireless relay monitoring device includes a plurality of cameras, and the transmitting unit sequentially transmits the plurality of video signals to the center device. With this configuration, it is possible to observe in detail by displaying each image from the individual imaging unit to the full screen.

The wireless relay monitoring system according to the present invention comprises:
The center device transmits a control signal of the monitoring signal to the second wireless relay monitoring device. With this configuration, when an abnormality occurs, transmission of the monitoring signal can be controlled by the center device.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. First, a configuration of a wireless relay monitoring system in which a wireless relay monitoring device according to an embodiment of the present invention is arranged will be described with reference to FIG.
In FIG. 1, a monitoring center device 306 is installed in an office 307 in a management range 301, and wireless relay monitoring devices 302 to 305 installed in a monitoring area (management range) around the office 307 are linked by wireless communication. A monitoring signal from an abnormality monitoring unit including a camera, a microphone, an abnormality sensor, and the like is wirelessly relayed to monitor the inside of the monitoring area.

The center device 306 can perform various monitoring by transmitting various monitoring modes to the wireless relay monitoring devices 302 to 305. As an example, control data such as a monitoring mode and a video transmission method is transmitted from the center device 306 to the wireless relay monitoring device 302 by a control signal F1 having a frequency f1, and a transmission method of the monitoring signal is instructed.
Therefore, the wireless relay monitoring device 302 sends the monitoring signal to the wireless relay monitoring device 303 by the wireless relay F2 of the frequency f2, and the wireless relay monitoring device 303 transmits the monitoring signal by the wireless relay F3 of the frequency f3 different from the reception frequency f2.
04, and the wireless relay monitoring device 304 transmits to the wireless relay monitoring device 305 via the wireless relay F4 having a frequency f4 different from the received frequency f3, and the wireless relay monitoring device 305 transmits the wireless relay F4 having a frequency f5 different from the received frequency f4. To transmit the monitoring signal to the center device 306. As described above, the wireless communication between the wireless relay monitoring apparatuses uses different wireless frequencies, thereby forming a wireless communication link for performing one-way wireless transmission from the center apparatus 306.

As described above, each wireless relay is performed via the wireless communication link passing through the center device 306 → the wireless relay monitoring device 302 → the wireless relay monitoring device 303 → the wireless relay monitoring device 304 → the wireless relay monitoring device 305 → the center device 306. According to an instruction from the center device 306 to the monitoring devices 302 to 305, a monitoring signal generated from each of the wireless relay monitoring devices 302 to 305 is transmitted for a certain period of time, or a monitoring signal from each of the wireless relay monitoring devices 302 to 305 is divided in time. Monitoring operation, such as transmission of data.

Next, referring to FIG. 2, a more specific configuration and operation of the wireless relay monitoring apparatus will be described with a minimum system. In FIG. 2, a center device 403 includes an antenna I
When a radio wave from the wireless relay monitoring apparatus 402 is received by F428, the receiving unit 429 receives and reproduces the video signal, the audio signal, and the data signal, and the video processing and control 431 reproduces the compressed image and separates the screen synthesis. Automatically adjusts contrast, corrects image distortion, etc.
The data is reproduced in accordance with the instruction of 33, and in the video control 432, the optimum image for monitoring and the image for motion detection are processed and processed, and the monitors 434, 435, 436 and 43 are processed.
7, the monitoring image is reproduced, and speakers 438, 439,
The sound is reproduced from 440 and 441.

A signal for setting the monitoring mode by the controller 433 is transmitted from the antenna 451 to the control signal F via the video processing / control 431, the transmitting section 430 and the antenna IF 428.
1 is output to the wireless relay monitoring device-1. The wireless relay monitoring device-1 receives the control signal F1 via the antenna 450, inputs the control signal F1 to the receiving unit 411 via the antenna IF443, and uses the monitoring data IF412 to transmit the control signal F1 to the center device 403.
The control data from the controller 433 is reproduced and input to the monitoring control 410 to receive a monitoring mode instruction.

The wireless relay monitoring device-1 includes a camera 406,
At least one or more of the cameras 407, 408, and 409 are installed. Further, the camera can be a fixed camera or a compound camera having a rotation function. If the control data instructs that four cameras be imaged at the same time, whether the image is to be transmitted further for each frame or to be transmitted simultaneously as four screens, the camera imaging method is described in the center apparatus 4.
Photographing is performed according to an instruction from 03. Camera 40
The image / audio data from 6, 407, 408, 409 and the microphone 442 is sent to the transmission unit 413, and is transmitted by wireless relay F2 different from the reception frequency. The power supply of the wireless relay monitoring device-1 uses a solar cell. And it operates also as charging the battery built in the power supply.

The wireless relay monitoring device-2 receives image and audio data from the wireless relay monitoring device-1 by the wireless relay F2, and operates in the same manner as the wireless relay monitoring device-1 by the wireless relay F3 having a transmission frequency different from the reception frequency. Center device 40
3 and the image / audio data is transmitted. The transmitted wireless relay F3 is received by the antenna 451 of the center device 403, transmitted from the antenna IF 428 to the receiving unit 429, and reproduced by the video processing / control 431 as image / audio data. Then, an image and a sound to be monitored are controlled by a controller 433 for controlling a monitoring condition, and the image is transmitted from the video control 432 to the monitors 434, 435, 436, and 437, where the image can be viewed. At the same time, sound is output from the speakers 438, 439, 440, 441.

Next, a specific example of a wireless relay monitoring system using a wireless relay monitoring device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 3 is an image transmission diagram for explaining a link state of monitoring data by a wireless communication link in the wireless relay monitoring system shown in FIG. In order to effectively monitor a large surveillance area, camera imaging from a long distance requires a camera to be captured from a distant position even if an intruder such as a person enters the area. Although it is difficult, the device of the present invention can monitor by placing a plurality of devices on an intrusion route in the monitoring area. Can be recorded.

As a basic configuration, the wireless relay monitoring device 30 disposed in the monitoring area (management range) 301 of FIG.
First, as shown in examples 2 to 305, first, the center device 3 installed in the office 307 in the monitoring area 301
06, the control signal F of the frequency f1 instructing the monitoring operation
1 is transmitted to the first wireless relay monitoring apparatus 302.

Referring to FIG. 3 and FIG. 1, the link operation of the monitoring signal by the wireless communication link in the wireless relay monitoring system shown in FIG. 1 will be described. First, the center device 306
Sends the control signal F1 of the frequency f1 as the monitoring condition data 502 to the wireless relay monitoring device 302, and instructs the wireless relay monitoring device 302 to transmit the monitoring data as the monitoring signal, the wireless relay monitoring device 302 The monitoring data 505, the monitoring condition data 502 from the center device 306, and the relay control signal 504 of the device are transmitted as transmission data to the next wireless relay monitoring device 303 by the wireless relay F2 of the frequency f2. Wireless relay monitoring device 303
The image data is added to the monitoring data 505 from the wireless relay monitoring device 302 to generate monitoring data 507, and a relay control signal 508 of the device is added to the wireless relay monitoring device 304 to perform wireless relay at the frequency f 3. Transmit by F3. Similarly, from the wireless relay monitoring device 304 via the wireless relay monitoring device 305,
The monitoring data of 305 is sent to the center device 306, and the center device 306 monitors all the data. As described above, the monitoring wireless relay monitoring devices 302 to 305 in the monitoring area
If a wireless communication link is created via the network and the number of wireless relay monitoring devices is increased or decreased according to the situation of the monitoring area, the range can be expanded or controlled as much as possible.

Next, an example of the operation of a wireless relay monitoring system using the wireless relay monitoring device according to one embodiment of the present invention will be described with reference to FIGS. FIG. 6 shows an operation flow as an operation method of the wireless relay monitoring system using the wireless relay monitoring device according to one embodiment of the present invention. Steps 901 to 908 of FIG. 6 shows a normal monitoring operation flow, and steps 909 to 912 in FIG. 6B show an emergency monitoring flow of the wireless relay monitoring system.

In the normal monitoring operation flow shown in FIG. 6A, first, the radio relay monitoring device 30 sends a monitoring signal (hereinafter also referred to as monitoring data) from the center device 306.
2 (step 901), the wireless relay monitoring apparatus 302 sends the captured image and the monitoring data to the next wireless relay monitoring apparatus 303 as the wireless relay F2 at the frequency f2 (step 902). Similarly, the wireless relay monitoring device 3
02 monitoring data is stored in each of the wireless relay monitoring devices 304 and 305.
Is wirelessly transmitted to the center device 306 via the network (steps 903 to 904). The center device 306 reproduces the received monitoring data and monitors the monitoring area of the wireless relay monitoring device 302 (step 905). Similarly, from the center device 306 to another wireless relay monitoring device, for example,
When instructed to transmit the monitoring data of the wireless relay monitoring device 303 (step 906), the center device 306 receives the monitoring data of the wireless relay monitoring device 304 and monitors it via the same route as above (step 907). Thus, the monitoring data of each monitoring area is stored in the center device 306.
(Step 908).

Next, a specific example of the operation of the wireless relay monitoring system when an abnormal condition occurs in the monitoring area according to the emergency monitoring flow shown in FIG. 6B will be described. The center device 306 instructs to send a normal monitoring signal (monitoring data) to the center device 306 periodically (step 90).
9). Therefore, the monitoring range 30 of the wireless relay monitoring device 304
8 and the sensor of the wireless relay monitoring device 304 is operated, the transmission of the normal monitoring data of the wireless relay monitoring device 304 is interrupted, and the transmission of the monitoring signal (monitoring data) for abnormality detection is preferentially performed by the center. The monitoring data of the wireless relay monitoring device 304 is transmitted to the wireless relay monitoring device 305 by the wireless relay F4 of the frequency f4, and the wireless relay monitoring device 305 converts the monitoring data of the occurrence of the abnormality from the received monitoring data. Is read, and monitor data is created only by adding abnormality occurrence data of the device to the received monitor data, and is transmitted to the center device 306. The center device 306 can respond to the abnormal state by checking the image and the sound from the monitoring data of the monitoring area where the abnormality has occurred (step 910). Then, the abnormal state is displayed on the center device 306 (step 911), and the monitoring is continued by instructing each wireless relay monitoring device to preferentially transmit the monitoring data of the abnormal area (step 912).

That is, step 9 in FIG.
As shown in FIG. 12, according to the monitoring flow when an abnormality occurs, the wireless relay monitoring device 3 in the monitoring area where the abnormality is detected
02 to 305 are given priority to the center device 30
6 to notify the person performing the monitoring work in the monitoring area of the emergency. According to the wireless relay monitoring method in one embodiment of the present invention, a wireless relay monitoring system that can easily notify the center device 306 of an emergency even if an abnormality occurs anywhere in a wide area and that can be easily enlarged and reduced is provided. be able to.

Next, a specific configuration example of the internal structure of the wireless relay monitoring apparatus according to one embodiment of the present invention will be described with reference to FIG. In FIG. 4, a wireless relay monitoring device 701 is placed in a monitoring area,
01, the monitoring data such as images and sounds in the monitoring range where the data is transmitted from the center device or another wireless relay monitoring device to the other wireless relay monitoring device or the center device. Prepare to send as data. Then, a monitoring link is configured within the monitoring range together with the other wireless relay monitoring devices so as to perform an operation of transmitting its own monitoring data according to an instruction of the center device or relaying and transmitting data of another wireless relay monitoring device. hand,
All necessary functions of the housing are configured to function as a terminal that sends its own monitoring data and relays other monitoring data.

That is, the wireless relay monitoring device 701 has a transmission / reception antenna 703 for receiving and transmitting radio waves, and a transmission / reception device 708 for inputting monitoring data and outputting it wirelessly, and a plurality of cameras 704, 705, 706, 707. Images the inside of the monitoring area with a plurality of microphones 710, 711, 7
An abnormal sound generated in the area is detected in 12, 713, and if any of the abnormal sensors 714, 715, 716, 717 comes close to the device, an abnormal detection signal is output and the monitoring state is changed. The monitoring data is transmitted.

Cameras 704, 705, 706, 707,
The microphones 710, 711, 712, 713 and the abnormality sensors 714, 715, 716, 717 have at least one configuration depending on the purpose of the wireless relay monitoring device 701, and the wireless relay monitoring device 701 transmits monitoring data with another device. If the purpose is only for relaying, the device operates as a wireless relay monitoring device not equipped with input devices such as a camera, a microphone, and an abnormality sensor. The wireless relay monitoring device 701 has a solar cell 702 so that it can operate independently at any position in the monitoring area, and can operate independently, and can be installed even in a place where there is no power supply.

Next, the operation of the wireless relay monitoring device 701 (FIG. 4) in one embodiment of the present invention will be described with reference to the wireless relay monitoring device-2 as an example with reference to FIG. In FIG.
The wireless relay monitoring device-2 receives the wireless relay F2 from the center device 403 or another wireless relay monitoring device,
It has a function of adding its own monitoring data or relaying monitoring data to the center device 403 only by relaying. Hereinafter, a typical operation will be described.

When the wireless relay monitoring device-2 receives the wireless relay F2 from another wireless relay monitoring device-1, it receives the antenna I
F424, the reception input is sent to the reception unit 422, and in the monitoring data IF 423, as shown in the image transmission diagram-1 of FIG. 3, the monitoring condition data 502, which is data from the center device 403, or another wireless relay monitoring device. And the relay control signal 504 from the server and the monitoring condition data 502 and the monitoring data 505 from the center device 403 are integrated to reproduce data. In addition, a relay control signal 508, which is data indicating that monitoring data from another wireless relay monitoring device has passed through the wireless relay monitoring device-2, or monitoring data 507 of the wireless relay monitoring device-2 should be sent. Judge. In addition, based on the data from the monitoring data IF 423, which is the reproduced monitoring data, the monitoring data 507 is sent to the next wireless relay monitoring device, or only the monitoring condition data from the center device 403 is selected and transmitted.

If an instruction is sent from the center device 403 to send monitoring data of the wireless relay monitoring device, the microphone 443, the cameras 417, 418, 419,
The monitoring data 420 is selected by the monitoring control 421, modulated by the transmission unit 421, transmitted to the center device 403 as radio waves of the wireless relay F 3, and the video, audio, and monitoring data are reproduced from the monitoring data and used for the monitoring operation. You.

Next, an operation flow of the wireless relay monitoring apparatus according to one embodiment of the present invention will be described with reference to FIG. In FIG. 5, steps 801 to 8 in FIG.
FIG. 4 shows a normal monitoring state of the wireless relay monitoring apparatus.
Steps 805 to 808 of (B) show the state when the abnormality monitoring means of the wireless relay monitoring device is operating.

In the normal monitoring state shown in FIG. 5A, the center device 40 follows the method shown in steps 801 to 804.
The monitoring condition data indicating the instruction from the wireless relay monitoring device 3 and the monitoring data from another wireless relay monitoring device are received (step 801).
The wireless relay monitoring device inputs monitoring data such as images and sounds according to the monitoring condition data instruction from the center device 403 (step 802), and sends the monitoring data and monitoring data from other wireless relay monitoring devices to the transmitting device. The information is input (step 803) and transmitted to the next wireless relay monitoring device or the center device 403 (step 804). That is,
Each wireless relay monitoring device operates in accordance with an instruction from the center device 403 to relay monitoring data from another wireless relay monitoring device and to transmit monitoring data of the wireless relay monitoring device.

However, when it is determined from the monitoring data from the camera, microphone, and abnormality sensor provided in the wireless relay monitoring device that an abnormality has occurred in the vicinity of the wireless relay monitoring device, the device is equipped with the wireless relay monitoring device. The monitoring data from the camera or microphone being relayed is transmitted prior to the monitoring data from another wireless relay monitoring device that relays the data, and the flow from step 801 in the normal monitoring state is performed by a separate instruction from the center device 403. Instead of returning to the normal monitoring mode, the camera enters a mode (steps 805 to 808) at the time of operation of abnormality monitoring means such as a camera, a microphone, and an abnormality sensor as shown in FIG. Continue sending data (details are given below). As described above, by appropriately arranging the wireless relay monitoring device in the monitoring area (management range), the monitoring area can be freely expanded and corrected.

Next, referring to FIGS. 2 and 5B,
A detailed operation of a specific wireless relay monitoring device when an abnormality is detected by the wireless relay monitoring device according to one embodiment of the present invention will be described. When the abnormality sensor 445 of the wireless relay monitoring device-2 placed in the monitoring area (or by the output of the cameras 417 to 420 or the microphone 443) senses an abnormality around the device (step 805), the monitoring control 442 becomes abnormal. Notifies and sends the abnormal data to the transmission unit 421
And sends it to the center device 403. Center device 4
When the administrator of the command 03 instructs the wireless relay monitoring device-1 to send the monitoring data to the controller 433 preferentially for a certain period of time by the control signal F1 (step 806), the wireless relay monitoring device-1 indicates so. Add monitoring condition data,
The data is transmitted to the wireless relay monitoring device-2 in which the abnormality sensor 445 is activated, and the monitoring data there is continuously transmitted during the time instructed to the center device 403 (step 807). The center device 403 reproduces the sent monitoring data and observes the situation at the site (step 808). After monitoring for a certain period of time, the center device 403 checks the video and audio from the monitoring data and determines that there is no abnormality.
An instruction is given by 33 to return to the normal monitoring state.

When the abnormality sensors 444 and 445 of the wireless relay monitoring devices -1 and -2 operate, the monitoring data is sent to the center device 403 for monitoring as described above, but the abnormality sensors 444 and 445 operate. That is, there is a high probability that an intruder is present around the corresponding wireless relay monitoring device. Therefore, the abnormality sensors 444, 445
As soon as is activated, an emergency siren sound is generated from the speech synthesis generator provided in the monitoring control 410,442.
The intruder is then surprised and very likely to turn to the source of the sound. If you turn your face toward the wireless relay monitoring device,
The probability that the camera captures the intruder's image from the front is very high, and if the image sent to the center device 403 is recorded, the wireless relay monitoring system can obtain the evidence in the image.

For example, when light emission for photographing is performed by the light emitting device 449 when the abnormal sensor 445 operates, it is possible to clearly capture an image of the cause of the operation of the abnormal sensor even in a dark place. There is also a bright flash for taking a picture, but an infrared flash is effective for a CCD camera. In particular, an infrared flash is very effective because even if an intruder wears a thin mask or the like, there is a possibility that an image transmitted by infrared rays can be acquired.

Next, the transmission and reception of abnormal data by the monitoring control (410 and 442 in FIG. 2) of the wireless relay monitoring apparatus according to one embodiment of the present invention will be described mainly with reference to FIG. FIG. 7A shows the monitoring control 1023 of the wireless relay monitoring apparatus and the abnormality monitoring means (FIG.
Camera 1001, microphone 1006, abnormal sensor 10
24) and transmission / reception means (transmission unit 1012, reception unit 101)
3, antenna IF 1014). FIG. 7B shows reception monitoring data 1026, and FIG. 7C shows transmission monitoring data 1027. In this description, the monitoring control 410 or 442 in the wireless relay monitoring device-1 or -2 shown in FIG.

In FIG. 7A, a camera 1001 that captures a monitoring image is amplified to an appropriate level by an image amplifier 1002, sent to a transmission unit 1012 via a switch 1004, and performs a modulation operation and the like. Center device data (monitoring condition data) 1016 from the center device included in the reception monitoring data 1026 in FIG. 7B and a wireless relay monitoring device from another wireless relay monitoring device located in front of the wireless relay monitoring device. The modulation operation and the standby are controlled by the instruction of the data 1017. The video signal of the camera 1001 is stored in a video memory 1003 for storing a signal from the video amplifier 1002 for a predetermined period of time according to a time specified by the center device or a time set by the device, and the predetermined predetermined time is set. It is configured to discard a time-lapsed image or overwrite with the next image.

Since the image memory 1003 requires a large-capacity memory, an economical memory setting time is necessary. When the abnormality sensor 1024 of the monitoring control 1023 detects an abnormality, the memory setting time is determined as shown in FIG. C)
At the same time as notifying the center device 403 of the detection of an abnormality by the wireless relay monitoring device data 1019 of this wireless relay monitoring device included in the transmission monitoring data 1027 shown in FIG.
In place of the received monitoring data 1018 of another wireless relay monitoring apparatus, the monitoring data 1022 is replaced with the monitoring data 1022, and the monitoring data 1022 is transmitted to the transmission unit 1012 via the control 1011.
, And sent to the center device 403 via another wireless relay monitoring device, and may be stored during the time until the video is reproduced.

In this way, the center device 403 can monitor the image from when the abnormality sensor 1024 detects an abnormality. That is, in the normal monitoring state, the monitoring data from each wireless relay monitoring device is sequentially sent to the center device 403, but when an abnormality is detected, the monitoring data is received under the control of the control 1011 as the abnormal data priority transmission unit. Instead of other monitoring data 1018,
The generated monitoring data 1022 is transmitted to the center device 403 via the next wireless relay monitoring device with priority.

In the above operation, the abnormality sensor 102
When 4 operates, the amplifier 1025 amplifies the abnormality detection signal as its monitoring information via the amplifier 1025 and inputs it to the control 1011 as monitoring data. Also, the receiving unit 101 that has received the monitoring data of another wireless relay monitoring device via the antenna IF
7 is received with the other monitoring data 1018 added to the reception monitoring data 1026 ((B) in FIG. 7) reproduced by the control unit 3.
In 1, the signal from the abnormality sensor 1024 is switched to the monitoring data 1022 ((C) in FIG. 7), which is an image of the camera 1001, instead of the other monitoring data 1018, and received from another wireless relay monitoring device. Monitoring data 1
026 is transmitted to the transmission unit 1012 in priority.

At the same time, the control 1011 performs switching 10 of the video system.
04, a memory image is output from the video memory 1003, an image when the abnormality sensor 1024 is operated via the switch 1004 is sent to the center device 403, and the image can be viewed on the center device 403. It can be so.

As described above, by storing the image in the video memory 1003 during the time from when the abnormality sensor 1024 is activated to the monitoring state, or a predetermined time before the abnormality sensor is activated. The image from a predetermined time can be monitored via the wireless relay monitoring device. In the above description, the video of the camera 1001 has been mainly described. However, the audio input from the microphone 1006 can also be transmitted to the center device 403 via the monitoring control 1023 in the same manner.

Further, in a monitoring environment where the image in the monitoring area is usually a still image at night or in the daytime, if the image moves, the image becomes a monitoring target.
02, the video is branched to the video motion detection 1005, and when a moving video is input, a monitoring signal is output to the control 1011 and the monitoring signal is switched 1004 and the video memory 100
3 and the same operation as the abnormal sensor 1024, the center device 403 can monitor the movement of the image of the camera 1001.

At the same time, when an abnormal sound is generated in the monitoring area, a signal obtained by branching the audio input from the microphone 1006 from the audio amplifier 1007 detects that the level has become abnormally high from the average level in normal times. When you do
An abnormality occurrence signal is output to the control 1011, and the monitoring data from the audio memory 1008 is given priority over the monitoring data from another device and the wireless relay monitoring device sends the monitoring data from the center device 40.
3 operates in the same manner as the operation of the abnormality sensor 1024 described above. Note that here, the camera 1001
, The microphone 1006, and the abnormality sensor 1024 constitute abnormality monitoring means.

Next, a method of relaying monitoring data via the wireless relay monitoring device according to one embodiment of the present invention will be described with reference to FIG. 8A and 8B show a diversity reception method of a relay radio wave transmitted via a wireless relay monitoring device according to an embodiment of the present invention, FIG. 8A is an explanatory diagram thereof, and FIG. FIG. 4C is a graph showing an electric field, FIG. 4C is a graph showing a received electric field of the antenna 2 of the wireless relay monitoring device, and FIG. 4D is a graph showing a total electric field level of the antennas 1 and 2 of the wireless relay monitoring device.

As shown in FIG. 8A, the wireless relay monitoring apparatus 1101 modulates the monitoring data into a relay radio wave 1103 and transmits it to the wireless relay monitoring apparatus 1102. The relay is performed by the relay radio wave 1111 to the wireless relay monitoring device. Also, as shown in FIG. 8A, a route for transmitting the relay radio wave 1103 is provided with an electrolytic fluctuation factor 1110 that disturbs the transmission of the radio wave propagation.
If there are, for example, if both devices straddle a road with a lot of traffic, or if they are installed in a place where a train passes over a track of a train, when electric field fluctuation factors such as vehicles pass, It is a well-known fact that nearby electric fields are significantly disturbed.

In consideration of the above, two receivers are prepared in the radio relay monitoring apparatus 1102 in order to adopt the receiver diversity system, antennas are installed in the respective receivers, and the antennas are connected to the antennas 1 and 2. The reception state when the antenna 2 is used will be described using an actual measurement model.

When the respective electric field levels of the relay radio wave 1 of the radio wave input to the antenna 1 and the relay radio wave 2 input to the antenna 2 are actually measured, the reception electrolysis 1106 of the antenna 1 shown in FIG. The reception electric field fluctuates like the reception electric field 1107 of the antenna 2 shown in C). The quality of the relay radio waves 1 and 2 deteriorates when the reception level of the receiver in the wireless relay monitoring apparatus 1102 reaches the null point 1116, 1117, 1118, or 1119 at a position lower than the quality limit level 1109. Either the state cannot be reproduced or the quality deteriorates and malfunctions occur.

Therefore, when the received electrolytic levels input to both antennas 1 and 2 are superimposed on the same time axis, FIG.
(D), the combined electric field level is 1108. That is, when the two electric field levels are compared in real time, the receiver having the higher electric field level is always selected to output the monitoring data, and the combined electric field 1112 is obtained. When the higher receiving electric field level is selected in this way, the level becomes far higher than the receiving quality limit level. Even if there is an electric field variation factor 1110 in the space between the two devices, the receiving performance becomes stable, and the monitoring data can be accurately obtained. And can be transmitted to the next device.

Next, with reference to FIG. 4, a power supply of the wireless relay monitoring apparatus according to one embodiment of the present invention will be described. As described above, the wireless relay monitoring device according to an embodiment of the present invention is configured to operate independently, particularly outdoors, so that it can be freely installed in a monitoring area. The configuration is as follows. That is, as an example of the structure, a solar cell 702 is provided on the upper surface of the wireless relay monitoring device 701 so as to be directed to the sun, and configured to operate using solar energy as a power source.

Since the wireless relay monitoring device according to the embodiment of the present invention is equipped with a solar cell, the wireless relay monitoring device can be placed anywhere in the monitoring area, and the monitoring data is stored in each wireless relay monitoring device. Monitored via the device's wireless communication link. However, the nighttime operation becomes unstable with only the solar cell. Therefore, the power supply device 405 is provided with a secondary battery or a large capacity to cope with nighttime operation.

Next, an imaging range of the wireless relay monitoring apparatus according to one embodiment of the present invention will be described with reference to FIG. FIG. 9A is an explanatory diagram of an imaging range of a camera of the wireless relay monitoring apparatus according to the embodiment of the present invention, FIG. 9B is a diagram showing an imaging order of the camera, and FIG. ) Is a diagram showing four-screen synthesis. Referring to FIG. 4, it has been described that cameras 704, 705, 706, and 707 are respectively installed on four surfaces of the wireless relay monitoring device 701 to enable omnidirectional imaging. Will be described in more detail.

As shown in FIG. 9, cameras 1, 2, 3, and 4 are provided on the four surfaces of the wireless relay monitoring device so that the imaging ranges of the cameras overlap each other. 360 degrees around the monitoring device 701 can be covered.
Since an image of the range of 0 degrees can be taken, no abnormality is overlooked.

Also, the images from the four cameras are simultaneously formed into one screen as shown in FIG. 9C by the monitoring controls 410 and 421 shown in FIG. 2 and sent to the center device. In this case, the images of the four cameras 1 to 4 can be simultaneously viewed as in the case of the four-screen composition 1212.

Alternatively, when it is desired to accurately monitor the screen by enlarging the screen, the images of the cameras 1 to 4 can be sequentially transmitted to the center device by switching at least one frame or by the time unit best suited for monitoring. it can. As a specific example, as shown in a sequential imaging 1211 in FIG. 9B, if a method of switching from camera 1 to camera 4 and returning to camera 1 is used, the wireless relay monitoring device 701 (FIG. 4) Surroundings can be monitored with high image quality. With such a wireless relay monitoring device according to an embodiment of the present invention,
When monitoring with the center device 403, it is suitable to monitor surrounding images in an emergency when an abnormal sensor or the like is activated when viewing with four screens, and to switch from camera 1 to camera 4 and watch in a normal state Suitable for.

The wireless relay monitoring apparatus according to the embodiment of the present invention described above is formed in a rectangular shape so that monitoring information can be wirelessly transmitted according to the purpose, so that the installation location and its configuration can be flexibly changed. Other than that, the wireless relay monitoring device is made cylindrical, and a single camera performs a pan / til operation to take a 360-degree image.
For example, 360-degree imaging with a single camera also falls within the scope of the present invention.

Further, the wireless relay monitoring apparatus according to the embodiment of the present invention has a camera arranged upward and a reflecting mirror rotated by a motor at the front of the camera. It is also possible to configure so as to capture a surrounding image.

[0071]

The wireless relay monitoring system according to the present invention is configured as described above, and particularly by transmitting the monitoring information by radio, for example, over a railway, a road, a river, or the like, or temporarily manages an outdoor event. Monitor areas where wired cables cannot be wired, whether indoors or outdoors,
The configuration of the wireless relay monitoring system and the change of the monitoring area can be flexibly dealt with according to the situation such as the change, enlargement, and reduction of the monitoring area.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a configuration and operation of a wireless relay monitoring system in which a wireless relay monitoring device according to an embodiment of the present invention is arranged;

FIG. 2 is a block diagram showing in detail a configuration of a wireless relay monitoring device of the wireless relay monitoring system according to one embodiment of the present invention;

3 is an image transmission diagram for explaining a link state of monitoring data by a wireless communication link in the wireless relay monitoring system shown in FIG. 1;

FIG. 4 is a perspective view showing an internal configuration of the wireless relay monitoring device according to the embodiment of the present invention;

FIG. 5 shows an operation flow as an operation method of the wireless relay monitoring device according to an embodiment of the present invention, in which steps 801 to 804 in FIG. 5A show a normal monitoring state of the wireless relay monitoring device, and FIG. Steps 805 to 808 are diagrams showing the state of the wireless relay monitoring device when the abnormal sensor is activated.

FIG. 6 shows an operation flow as an operation method of the wireless relay monitoring system using the wireless relay monitoring device according to the embodiment of the present invention, and Steps 901 to 908 of FIG. Show the flow,
(B) Steps 909 to 912 are diagrams showing an emergency monitoring flow of the wireless relay monitoring system.

FIG. 7 shows the configuration of monitoring control, monitoring means, and transmission / reception means of the wireless relay monitoring apparatus according to one embodiment of the present invention;
(A) is a block diagram thereof, (B) is a diagram showing reception monitoring data, (C) is a diagram showing transmission monitoring data,

8A and 8B show a diversity reception method of a relay radio wave transmitted via a wireless relay monitoring device according to an embodiment of the present invention, wherein FIG. 8A is an explanatory diagram thereof, and FIG. FIG. 7C is a graph showing the received electric field, FIG. 9C is a graph showing the received electric field of the antenna 2 of the wireless relay monitoring device,
(D) is a graph showing the total electric field level of the antenna 1 and the antenna 2 of the wireless relay monitoring device,

FIGS. 9A and 9B show an imaging range of a camera of the wireless relay monitoring apparatus according to the embodiment of the present invention, FIG. 9A is an explanatory diagram, FIG. 9B is a diagram showing an imaging order of the camera, and FIG. Diagram showing synthesis,

FIG. 10 is a layout diagram of a fault monitoring system showing a conventional camera layout for monitoring within a management range,

FIG. 11 is a configuration diagram showing a configuration of a conventional abnormality monitoring system.

[Explanation of symbols]

101, 301 Management range 102, 307 Office 103, 104, 105, 106, 107, 108 Camera 109, 306, 403 Center device 110, 111, 112, 113, 114, 115 Monitoring area 201, 202, 203, 204 Camera 205 Switcher 206 Monitor 207 Controller 208 VTR 209, 210, 211, 212 Coaxial cable 302, 303, 304, 305 Wireless relay monitoring device 306, 403 Center device 308, 309, 310, 316 Monitoring range 311, 426, 501 Control signal F1 312, 452, 503 Wireless relay F2 313, 427, 506 Wireless relay F3 314 Wireless relay F4 315 Wireless relay F5 401 Wireless relay monitoring device-1 402 Wireless relay monitoring device-2 431 Video processing -Control 432 Video control 404, 415, 702 Solar cell 405, 416 Power supply unit 406, 407, 408, 409 Camera 417, 418, 419, 420 Camera 410, 442 Monitoring control 411, 422, 429, 1013 Receiver 412, 423 Monitoring data IF 413, 421, 430, 1012 Transmitter 424, 428, 443, 1014 Antenna IF 425, 450, 451, 1015 Antenna 444, 445 Abnormality sensor 446, 447 Speaker 448, 449 Light emitting device 502 Monitoring condition data 504, 508 Relay control signal 505 Monitoring control data 507 Monitoring data 509 To center device 701 Wireless relay monitoring device 703 Transmission / reception antennas 704, 705, 706, 707, 1001 Camera 708 Transmission / reception device 71 , 711, 712, 713, 1006 Microphone 714, 715, 716, 717, 1024 Abnormality sensor 719, 720 Light emitting device 721 Speaker 801-808 Wireless relay monitoring operation flow 901-908 Normal monitoring flow 909-912 Emergency monitoring flow 1002 Video amplification 1003 Video memory 1004, 1009 Switching 1005 Motion detection 1007 Audio amplification 1008 Audio memory 1010 Audio detection 1011 Control 1016, 1021 Center device data 1017, 1020 Other wireless relay monitoring device data 1018 Other monitoring data 1019 The wireless relay monitoring device data 1022 The monitoring Data 1023 Monitoring control 1025 Amplification 1026 Reception monitoring data 1027 Transmission monitoring data 1101, 1102 Wireless relay monitoring device 1103 Relay power Wave 1 1104 Antenna 1 1105 Antenna 2 1106 Antenna 1 reception electric field 1107 Antenna 2 reception electric field 1108 Synthetic electric field level 1109 Quality limit level 1110 Electric field fluctuation factor 1111 Relay electric wave

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C054 CC03 CG07 DA07 EA01 EA03 HA18 5C056 FA05 HA01 HA04 5C087 AA02 AA03 AA08 AA19 AA37 BB18 BB46 BB56 BB65 BB73 BB76 DD03 EE05 EE08 FF16 GG70

Claims (15)

[Claims] In a wireless relay monitoring system having a plurality of wireless relay monitoring devices and a center device, a first wireless relay monitoring device includes: a camera that outputs a video signal; a microphone that outputs an audio signal; A sensor that outputs an abnormal signal when sensed, the video signal,
An abnormality monitoring unit that outputs a monitoring signal including at least one of the voice signal and the abnormality signal; a reception unit that receives a wireless monitoring signal output from a second wireless relay monitoring device; and the abnormality monitoring unit. Multiplexing the output monitoring signal and the wireless monitoring signal received by the receiving means,
Transmitting means for transmitting to the center device as a multiplex radio monitoring signal, wherein the center device includes receiving means for receiving the multiplex radio monitoring signal transmitted via the first radio relay monitoring device A wireless relay monitoring system. 2. When the sensor outputs the abnormal signal, the first wireless relay monitoring device includes abnormal data priority transmitting means for transmitting only the monitor signal without receiving the wireless monitor signal. The wireless relay monitoring system according to claim 1, wherein: 3. When the sensor outputs the abnormality signal, the abnormality monitoring means of the first wireless relay monitoring device outputs a monitoring signal including the abnormality signal, the video signal, and the audio signal. The wireless relay monitoring system according to claim 1 or 2, wherein: 4. The apparatus according to claim 1, wherein said first wireless relay monitoring device comprises an onset sound generating means for generating an onset sound, and said onset sound generating means generates an onset sound when said sensor outputs said abnormal signal. Item 4. The wireless relay monitoring system according to any one of Items 1 to 3. 5. The wireless communication system according to claim 1, wherein the first wireless relay monitoring device includes a light emitting unit that emits light, and the light emitting unit emits light when the sensor outputs the abnormal signal. The wireless relay monitoring system according to any one of the above. 6. The first wireless relay monitoring device includes storage means for storing at least one of the video signal and the audio signal, and the storage means stores at least one of the video signal and the audio signal in a predetermined format. 6. The apparatus according to claim 1, wherein the transmission unit transmits at least one of a video signal and an audio signal stored in the storage unit when time is accumulated and the sensor outputs the abnormal signal. A wireless relay monitoring system according to any one of claims 1 to 3. 7. The apparatus according to claim 1, wherein the first wireless relay monitoring device includes a motion detecting unit for detecting a change in the video signal, and when the motion detecting unit detects an abnormality, the transmitting unit transmits the video signal and the audio signal. The wireless relay monitoring system according to any one of claims 1 to 6, wherein at least one of the following is transmitted to the center device. 8. The apparatus according to claim 1, wherein at least one of a video signal and an audio signal stored in said storage means is transmitted to said center device when said movement detection means detects an abnormality. The wireless relay monitoring system according to any one of the above. 9. The video signal according to claim 1, wherein said first wireless relay monitoring device includes audio level detecting means for detecting a level of said audio signal, and said audio level detecting means detects an abnormality exceeding a predetermined level. The wireless relay monitoring system according to any one of claims 1 to 8, wherein at least one of the audio signal and the audio signal is transmitted to the center device. 10. When the audio level detecting means detects an abnormality exceeding a predetermined level, at least one of a video signal and an audio signal stored in the storage means is transmitted to the center device. Claims 1 to 8
The wireless relay monitoring system according to any one of the above. 11. The apparatus according to claim 1, further comprising a plurality of antennas for transmitting and receiving a plurality of relay radio waves having different frequencies, wherein said plurality of antennas are selectively used with respect to fluctuations in a received electric field. The wireless relay monitoring system according to the above. 12. The wireless relay monitoring system according to claim 1, further comprising a solar battery serving as a power supply, and a storage battery charged from the solar battery, wherein the wireless relay monitoring system is of a non-powered type. 13. The wireless relay monitoring device according to claim 1, wherein the wireless relay monitoring device has a plurality of cameras, and the transmitting means simultaneously transmits the plurality of video signals to the center device. Wireless relay monitoring system. 14. The wireless relay monitoring device has a plurality of cameras, and the transmitting means sequentially transmits the plurality of video signals to the center device.
3. The wireless relay monitoring system according to any one of 2. 15. The wireless relay monitoring system according to claim 1, wherein a control signal of the monitoring signal is transmitted from the center device to the second wireless relay monitoring device.