CN110954825A - Dynamometer switcher, multi-dynamometer switcher cascade device and control method thereof - Google Patents
Dynamometer switcher, multi-dynamometer switcher cascade device and control method thereof Download PDFInfo
- Publication number
- CN110954825A CN110954825A CN201911090029.2A CN201911090029A CN110954825A CN 110954825 A CN110954825 A CN 110954825A CN 201911090029 A CN201911090029 A CN 201911090029A CN 110954825 A CN110954825 A CN 110954825A
- Authority
- CN
- China
- Prior art keywords
- channel
- switcher
- switch
- slave
- dynamometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a dynamometer switcher, a multi-dynamometer switcher cascade device and a channel switching control method thereof, wherein the dynamometer switcher can more conveniently configure the channel number of the dynamometer switcher through a plug-in card type structural design; the number of channels can be freely configured by controlling a dial switch on the plugboard; the channel can be further expanded through the cascade expansion inserting plate, so that a plurality of dynamometer machines needing to be tested can be connected into the dynamometer machine system for testing, the main communication access port on the control inserting plate is connected with the remote computer, the remote control of channel switching can be realized, and the working efficiency is improved. The invention can be applied to the technical field of dynamometer switcher.
Description
Technical Field
The invention relates to the technical field of dynamometer switches, in particular to a dynamometer switch, a cascade device of a plurality of dynamometer switches and a control method for channel switching of the cascade device.
Background
Along with the increasingly strict requirements of the country on the energy efficiency of the motor and the increasingly high application accuracy of the motor technically, more and more motor manufacturers and motor appliers begin to use a large number of dynamometers, and the situation that a plurality of dynamometers are equipped in a set of dynamometer system is more and more common, so that the problem that how to conveniently and quickly connect a plurality of dynamometers into the dynamometer system is concerned and emphasized.
The existing dynamometer switcher equipment is fixed 4-channel equipment, namely, 4 dynamometers can be simultaneously accessed at one time, namely, the existing single switcher channel is limited in quantity and troublesome to expand, and can only be manually switched, so that program control cannot be realized.
Interpretation of terms:
a dynamometer: and a device for measuring the rotating speed, the torque and the shaft power of the motor.
A dynamometer system: the whole set of equipment for measuring the performance of the motor consists of a dynamometer, a dynamometer controller, an electrical performance and mechanical performance measuring instrument and test software.
The dynamometer switcher: the device is used for intensively connecting a plurality of dynamometers into a dynamometer system, and a user can select the dynamometer needing to be connected into the dynamometer system in a manual or program-controlled mode.
Disclosure of Invention
In order to solve at least one of the above technical problems, an object of the present invention is to provide a dynamometer switch, a cascade device of multiple dynamometer switches, and a method for controlling channel switching thereof.
The technical scheme adopted by the invention is as follows: in one aspect, an embodiment of the present invention includes a dynamometer switch, including:
a back plate and a plug board group; the backplane comprises a plurality of interfaces including a cascaded expansion interface; the plug board group comprises a plurality of plug boards, wherein the plug boards comprise cascade expansion plug boards; the back plate is connected with each plug board through a plug-in connector; the cascade expansion interface is connected to the cascade expansion plugboard and expands a channel through the cascade expansion plugboard.
Further, the group of inserts comprises: the system comprises a power supply plugboard, a control plugboard, a test system connecting plugboard, a plurality of channel plugboards and a cascade expansion plugboard; one end of each plug board is provided with a plug board interface; each plug board interface is respectively connected with a corresponding interface in the back board, wherein the plug board interface of the cascaded expansion plug board is connected with the cascaded expansion interface in the back board, so that the cascaded expansion plug board is connected into the cascaded expansion interface in the back board.
Further, the air conditioner is provided with a fan,
the other end of the power supply plugboard is provided with a corresponding power supply access port for accessing a power supply;
the other end of the control plug board is provided with a corresponding main communication access port and a corresponding slave communication access port, the main communication access port is used for connecting a remote computer, and the slave communication interface is used for receiving signals;
the other end of the test system connecting plug board is provided with a corresponding test system access port for connecting with a dynamometer system;
the other end of each channel plug board is respectively provided with a corresponding dynamometer access port for connecting a dynamometer;
and the other end of the cascade expansion plugboard is provided with a corresponding expansion access port for cascade expansion of the channel.
Furthermore, a dial switch and a single chip microcomputer are installed on the control plugboard;
the dial switch is used for setting the number of channels;
the single chip microcomputer is used for recognizing an operation instruction, displaying a current channel, controlling channel switching, controlling communication and dialing a switch.
In another aspect, an embodiment of the present invention further includes a cascade device of multiple dynamometer switches, including:
a plurality of dynamometer switcher; the switches are sequentially connected one by one in a hierarchy progressive mode; in any two adjacent switchers, one of the switchers is connected with the test system access port on the test system connecting plug board of the other switcher through the extension access port on the cascading extension plug board.
Further, any one of the switches is set as a master switch, and all the switches except the master switch are set as slave switches; the main communication access port of the main switcher is connected to the serial port of the remote computer; and the slave communication access port of the master switcher is connected with the master communication access port of one of the slave switchers.
On the other hand, the embodiment of the invention also comprises a control method for switching the channels of the cascade device of the multiple dynamometer switches, which comprises the following steps:
the main switcher receives a channel switching instruction;
the main switcher sends an instruction for disconnecting the current connection channel;
receiving an instruction for disconnecting the currently connected channel from the switch and disconnecting the currently connected channel;
the main switcher sends a command for connecting a target channel after receiving the command for successfully disconnecting;
receiving an instruction of connecting the target channel from the switcher and connecting the target channel;
and the main switcher changes the current channel display after receiving the command of successful connection.
Further, the step of receiving a channel switching command by the master switch specifically includes:
inputting a channel switching instruction on a remote computer;
the remote computer issues a channel switching instruction to the main switcher through the serial port;
the main switcher receives a channel switching command.
Further, the step of receiving an instruction to disconnect the currently connected channel from the switch and disconnecting the currently connected channel includes:
a. the slave switcher directly connected with the master switcher receives an instruction for disconnecting the current connection channel;
b. the slave switch confirming that a currently connected channel is included in the channel of the slave switch;
c. the slave switch disconnects the currently connected channel;
d. the slave switch confirming that a currently connected channel is not included in the channel of the slave switch;
e. the slave switch sends an instruction of disconnecting the current connection channel to a slave switch of a next level;
f. and repeating the steps a to e by the slave switcher of the next level so as to finally disconnect the currently connected channel.
Further, the step of receiving an instruction for connecting to the target channel from the slave switch and connecting to the target channel specifically includes:
g. receiving an instruction for connecting a target channel from a switcher;
h. the slave switcher confirms that a target channel needing to be connected is contained in the channel of the slave switcher;
i. the slave switcher is connected with a target channel;
j. the slave switcher confirms that a target channel needing to be connected is not contained in the channel of the slave switcher;
k. the slave switch sends an instruction of connecting the target channel to a slave switch of a next level;
repeating the steps g-k by the slave switcher of the next layer to finally connect the target channel needing to be connected.
The invention has the beneficial effects that: through the structural design of the plug-in card type, the channel number of the dynamometer switcher can be configured more conveniently, and the channel number of a single switcher can be freely configured by controlling a dial switch on the plug board; when a plurality of dynamometer switchers are cascaded, the cascade expansion of the plurality of dynamometer switchers can be rapidly carried out, the number of the cascade switchers is freely set, and when the plurality of dynamometer switchers are cascaded, the main switcher can be connected with a remote computer through the main communication access port to realize the switching of a remote control channel; therefore, any one of the dynamometer machines needing to be tested can be tested simultaneously, and the working efficiency is improved.
Drawings
FIG. 1 is a block diagram of a conventional dynamometer switcher;
FIG. 2 is a block diagram of the dynamometer switcher according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure of a control board in the dynamometer switch according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the connection of the dynamometer switcher devices according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for controlling channel switching of multiple dynamometer switcher devices according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the conventional dynamometer switch has a simple structure, and includes a switch main board, a power supply access port, a dynamometer system connection port, 4 dynamometer connection ports, and a channel knob and a channel indicator thereof. As can be seen from fig. 1, the conventional dynamometer switch has only 4 channels, i.e., only 4 dynamometer connectors, and only supports that 4 dynamometers are simultaneously connected to a dynamometer system for testing, and the channels cannot be expanded; in addition, the existing dynamometer switcher is not provided with a communication interface to be connected with a remote computer, and can only switch channels manually, so that the switching of remote control channels cannot be realized.
Example 1
Referring to fig. 2, the present embodiment includes a dynamometer switch including:
a back plate and a plug board group; the backplane comprises a plurality of interfaces including a cascaded expansion interface; the plug board group comprises a plurality of plug boards, wherein the plug boards comprise cascade expansion plug boards; the back plate is connected with each plug board through a plug-in connector; the cascade expansion interface is connected to the cascade expansion plugboard and expands a channel through the cascade expansion plugboard.
In this embodiment, the group of plugboards includes: the system comprises a power supply plugboard, a control plugboard, a test system connecting plugboard, a plurality of channel plugboards and a cascade expansion plugboard; one end of each plug board is provided with a plug board interface; each plug board interface is respectively connected with a corresponding interface in the back board, wherein the plug board interface of the cascaded expansion plug board is connected with the cascaded expansion interface in the back board, so that the cascaded expansion plug board is connected into the cascaded expansion interface in the back board.
In the embodiment, the back surface of the back plate is also provided with a channel control knob and a channel display interface; the plurality of interfaces are respectively a power supply interface, a control interface, a plurality of channel interfaces, a dynamometer system access interface and a cascade expansion interface; the power interface is connected with the plug board interface at one end of the power plug board, the control interface is connected with the plug board interface at one end of the control plug board, each channel interface is respectively connected with the corresponding plug board interface at one end of each channel plug board, the dynamometer system access interface is connected with the plug board interface at one end of the test system connection plug board, and the cascade expansion interface is connected with the plug board interface at one end of the cascade expansion plug board.
In this embodiment, the other end of the power strip is provided with a corresponding power inlet for receiving a power supply; the other end of the control plug board is provided with a corresponding main communication access port and a corresponding slave communication access port, the main communication access port is used for connecting a remote computer, and the slave communication interface is used for receiving signals; the other end of the test system connecting plug board is provided with a corresponding test system access port for connecting with a dynamometer system; the other end of each channel plug board is respectively provided with a corresponding dynamometer access port for connecting a dynamometer; and the other end of the cascade expansion plugboard is provided with a corresponding expansion access port for cascade expansion of the channel.
In the embodiment, the control plugboard is provided with a dial switch and a singlechip; the dial switch is used for setting the number of channels; the single chip microcomputer is used for recognizing an operation instruction, displaying a current channel, controlling channel switching, controlling communication and dialing a switch.
Referring to fig. 3, the internal structure block diagram of the control board includes:
as can be seen from fig. 3, one end of the plug board interface is also used for accessing a power supply and a channel switching knob circuit, and the plug board interface is also communicated with the channel switching relay and the channel display nixie tube driving circuit; the dial switch, the main communication access port, the slave communication access port, the channel relay drive circuit and the plugboard interface are respectively connected with the single chip microcomputer, namely, the identification of the operation instruction of the switcher, the display of the current channel, the control of the channel switching, the communication and the control of the dial switch are all realized by controlling the single chip microcomputer in the plugboard; and the main communication interface at one end of the control plug board can be connected with the serial port of a remote computer, and a set of simple self-defined communication protocol is established, so that the remote computer can issue a specific instruction through the connected serial port to realize the remote control of channel switching.
In this embodiment, each channel plug board is provided with a relay, and the relay is used for controlling the communication between the plug board interface at one end of the channel plug board and the corresponding channel interface in the backplane, so as to control the switching of the channels. For example, when the switcher selects that the target channel to be connected is channel 5, it remains unchanged if the currently connected channel is just channel 5; if the currently connected channel is not the channel 5, the relay in the channel plug board on the currently connected channel can disconnect the plug board interface at one end of the channel plug board from the corresponding channel interface in the backboard, so as to disconnect the current channel; the relay in the channel plug board on the channel 5 can communicate the plug board interface at one end of the channel plug board with the corresponding channel interface in the back board, so as to connect the target channel.
In this embodiment, the control channel switching may be realized by a relay, and an analog signal gating chip may be further disposed on the channel plug board, the single chip on the control plug board may realize the input of the analog signal, and the analog signal gating chip may realize the control channel switching by switching the signal.
In the dynamometer switcher provided in this embodiment, the channel switching may be performed by manually rotating the channel control knob, or may be connected to a remote computer through a main communication access port in the switcher control board, and the computer issues a channel switching instruction, thereby implementing remote control of channel switching.
In this embodiment, the number of channels can be set by controlling dial switches on the plugboards, and if a user needs several channels, several channel plugboards are inserted; the dynamometer switch provided by the embodiment comprises at most 8 channel plug board positions, and supports at most 8 dynamometers to be simultaneously connected into a dynamometer system for testing. When the number of channels required by a user is just 8, inserting 8 channel plugboards into the positions of the 8 channel plugboards; when the number of channels required by a user is less than 8, inserting the channel plugboards with the required number of channels into the channel plugboard positions, and replacing the insertion with a neutral baffle in the rest channel plugboard positions; when the number of channels required by a user is more than 8, the channels are connected with dynamometer switches with the same structure through the cascade expansion plugboard, so that the channels are expanded; the number of channels required by a customer can be determined by connecting the switches with several same dynamometer switches so as to achieve the required number of channels.
In summary, the dynamometer switcher of the embodiment has the following advantages:
through the structural design of the plug-in card type, the number of channels of the dynamometer switcher can be more conveniently configured; the dynamometer switcher can freely configure the number of channels by controlling a dial switch on the plugboard; the cascade expansion plugboard can also expand channels, so that more than 4 dynamometers can be connected into a dynamometer system for testing, and the working efficiency is improved; the main communication access port on the control plug board is connected with a remote computer, so that the remote control of channel switching can be realized.
Example 2
Referring to fig. 4, the present embodiment includes a multiple dynamometer switch cascade apparatus including multiple dynamometer switches described in embodiment 1; the switches are sequentially connected one by one in a hierarchy progressive mode; in any two adjacent switchers, one of the switchers is connected with the test system access port on the test system connecting plug board of the other switcher through the extension access port on the cascading extension plug board.
Further as a preferred embodiment, any one of the switches is set as a master switch, and all of the switches except the master switch are set as slave switches; the main communication access port of the main switcher is connected to the serial port of the remote computer; and the slave communication access port of the master switcher is connected with the master communication access port of one of the slave switchers.
In this embodiment, according to the number of channels actually required, that is, how many dynamometers need to be connected to the dynamometer system at the same time for testing, it is determined how many dynamometer switches need to be cascaded to expand the channels. For example, when 8 dynamometer switches are cascaded, 64 channels can be expanded, that is, 64 dynamometers can be simultaneously connected to a dynamometer system for testing. Setting one of the switches as a master switch, the other 7 switches as slave switches, the master switch being numbered as switch number 0, the 7 slave switches being numbered as switch number 1, switch number 2, switch number 3, switch number 4, slave switch number 5, and switch number 7 of switch number 6, respectively; an extension access port at one end of a cascade extension plugboard of the switcher No. 0 is connected with a test system access port at one end of a test system connection plugboard of the switcher No. 1, a slave communication access port at one end of a control plugboard of the switcher No. 0 is connected with a master communication access port at one end of a control plugboard of the switcher No. 1, and a master communication interface at one end of the control plugboard of the switcher No. 0 is connected with a serial port of a remote computer; an extension access port at one end of a cascade extension plugboard of the No. 1 switcher is connected with a test system access port at one end of a test system connection plugboard of the No. 2 switcher, and a slave communication access port at one end of a control plugboard of the No. 1 switcher is connected with a master communication access port at one end of a control plugboard of the No. 2 switcher; by analogy, the connection modes of the 2 # switch and the 3 # switch, the 3 # switch and the 4 # switch, the 4 # switch and the 5 # switch, the 5 # switch and the 6 # switch, and the 6 # switch and the 7 # switch are all connected according to the same connection mode of the 0 # switch and the 1 # switch.
In summary, the dynamometer switcher apparatus described in this embodiment has the following advantages:
through the cascade expansion plugboard, all switchers are sequentially connected one by one in a hierarchy progressive mode, so that the number of channels larger than 8 can be expanded, and the working efficiency is further improved; similarly, the main communication access port of the main switcher is connected with the remote computer, the auxiliary communication access port of the main switcher is connected with the main communication access port of one of the auxiliary switchers, and the auxiliary switcher is connected with the main communication access port of the auxiliary switcher of the next hierarchy through the auxiliary communication access port, so that the remote control of channel switching can be realized.
Example 3
Referring to fig. 5, the present embodiment includes a method for controlling channel switching of a multiple dynamometer switcher device, the method specifically includes the following steps:
s1, a main switcher receives a channel switching instruction;
s2, the main switcher sends an instruction for disconnecting the current connection channel;
s3, receiving an instruction of disconnecting the current connection channel from the switcher and disconnecting the current connection channel;
s4, the main switcher sends a command for connecting a target channel after receiving the command for successfully disconnecting;
s5, receiving an instruction of connecting a target channel from the switcher and connecting the target channel;
and S6, the main switcher changes the current channel display after receiving the command of successful connection.
As a preferred implementation of this embodiment of the method for controlling channel switching, the step S1, that is, the step of the master switch receiving the channel switching command, specifically includes:
s101, inputting a channel switching instruction on a remote computer;
s102, the remote computer issues a channel switching instruction to a main switcher through a serial port;
s103, the main switcher receives a channel switching command.
In this embodiment, the main communication access port of the main switch is connected to the serial port of the remote computer, and a set of simple customized communication protocol is established, so that the remote computer can issue a specific instruction, such as an instruction for channel switching, through the connected serial port. In this embodiment, the channel control knob on the main switch may be manually rotated, and the main switch recognizes the rotation of the knob, so as to receive the channel switching command.
Further, as a preferred implementation of this embodiment of the channel switching control method, the step S3, that is, the step of receiving an instruction to disconnect the currently connected channel from the switch and disconnecting the currently connected channel, specifically includes:
s301, a slave switcher directly connected with a master switcher receives an instruction of disconnecting a current connecting channel;
s302, the slave switcher confirms that the currently connected channel is contained in the channel of the slave switcher;
s303, disconnecting the currently connected channel from the slave switcher;
s304, the slave switcher confirms that the currently connected channel is not contained in the channel of the slave switcher;
s305, the slave switcher sends an instruction of disconnecting the current connection channel to the slave switcher of the next level;
s306, the slave switch of the next layer repeats steps S301 to S305 to finally disconnect the currently connected channel.
The slave switch receives the instruction to disconnect the current connection channel in step S301 only when the slave communication access port of the master switch is connected to the master communication access port of the slave switch; likewise, the slave switch sending the instruction of disconnecting the current connection channel to the slave switch of the next hierarchy in step S305 is also realized by connecting the slave communication access of the slave switch with the master communication access of the slave switch of the next hierarchy. In this embodiment, after the slave switch disconnects the currently connected channel in step S303, the method further includes the step of the slave switch sending a command of successful disconnection to the master switch.
Further, as a preferred implementation of this embodiment of the channel switching control method, the step S5, that is, the step of receiving the instruction of connecting the target channel from the switch and connecting the target channel, specifically includes:
s501, receiving an instruction of connecting a target channel from a switcher;
s502, the slave switcher confirms that a target channel needing to be connected is contained in a channel of the slave switcher;
s503, the slave switcher is connected with a target channel;
s504, the slave switcher confirms that a target channel needing to be connected is not contained in the channel of the slave switcher;
s505, the slave switcher sends an instruction of connecting a target channel to a slave switcher of a next level;
s506, the slave switcher of the next layer repeats the steps S501-S505 to finally connect the target channels needing to be connected.
Similarly, the master communication access of the slave switch is connected to the slave communication access of the master switch, so that the slave switch receives the command for connecting the target channel in step S501; the slave switch is connected to the master communication access of the slave switch of the next level, so that the slave switch sends the command of the connection target channel to the slave switch of the next level in step S505. In this embodiment, after the slave switch connects to the target channel in step S503, the slave switch further includes a step of sending a command of successful connection to the master switch.
For example, an instruction to change the current connection channel to channel 21 is input on the remote computer, or the current channel is displayed as channel 21 by manually rotating a channel control knob on the master switch; wherein, switch 0 is the master switch, includes passageway 1 to passageway 8, and switch 1 to 7 is the slave switch, and switch 1 contains passageway 9 to passageway 16, and switch 1 directly links to each other with switch 0, and switch 2 contains passageway 17 to passageway 24, and every switch all contains 8 passageways, analogizes in proper order, can know the passageway that switch 3 numbers, 4 numbers, 5 numbers, 6 numbers, 7 numbers contained respectively. After receiving the channel switching instruction, the No. 0 switcher transmits an instruction for disconnecting the current connecting channel to the No. 1 switcher through the communication access port, and after receiving the instruction for disconnecting the current connecting channel, the No. 1 switcher judges whether the current connecting channel to be disconnected is one of the channels 9 to 16, if so, the current channel is disconnected, and the instruction for successfully disconnecting is transmitted to the No. 0 switcher through the main communication access port; if not, the instruction of disconnecting the current channel is sent to the No. 2 switcher through the communication access port. After receiving the instruction of disconnecting the current channel, the switch 2 disconnects the current channel according to the same processing mode as the switch 1 or sends the instruction of disconnecting the current channel to the switch 3, and so on until the current channel is successfully disconnected, and sends the instruction of successfully disconnecting to the switch 0. If the current channel to be disconnected is included in switch No. 0 (master switch), the current channel is directly disconnected by the master switch. After receiving the successful disconnection command, the switch No. 0 further issues a command to connect to the target channel 21 from the communication access to the switch No. 1, and similarly, after receiving the command to connect to the target channel 21, the switch No. 1 determines whether the target channel 21 is one of the channels 9 to 16 of the switch No. 1, and if so, connects to the target channel, in this embodiment, the target channel 21 is not in the channel included in the switch No. 1, the switch No. 1 sends the command to connect to the target channel 21 to the switch No. 2, the switch No. 2 determines that the target channel is in the channel included in the switch No. 2, the switch No. 2 connects to the target channel 21 and sends the successful connection command to the switch No. 1, the switch No. 1 then sends the successful connection command to the switch No. 0, and after receiving the successful connection command, the switch No. 0 changes the currently displayed channel to the channel 21, and sends the instruction of successful channel switching to the remote computer. In this embodiment, if the switch No. 0 (master switch) does not receive the command of successful disconnection, the switch fails, and the displayed current channel remains unchanged; if the switch No. 0 does not receive the instruction of successful connection, the switch fails, and the current channel is displayed as 0, which indicates no connection. In this embodiment, if the target channel to be connected is in the switch No. 0, after the switch No. 0 receives the command of successful disconnection, the switch No. 0 does not send the command of connecting the target channel to the switch No. 1, but the switch No. 0 directly connects the target channel.
In this embodiment, the communication is realized by connecting the slave communication access port of the switch in the previous layer with the master communication access port of the switch in the next layer. The communication can be realized by connecting the slave communication access port of the master switcher with the slave communication access ports of all the other slave switchers through a bus, and the half-duplex bus communication is carried out.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The invention is capable of other modifications and variations in its technical solution and/or its implementation, within the scope of protection of the invention.
Claims (10)
1. A dynamometer switcher is characterized by comprising a back plate and a plug board group; the backplane comprises a plurality of interfaces including a cascaded expansion interface; the plug board group comprises a plurality of plug boards, wherein the plug boards comprise cascade expansion plug boards; the back plate is connected with each plug board through a plug-in connector; the cascade expansion interface is connected to the cascade expansion plugboard and expands a channel through the cascade expansion plugboard.
2. The dynamometer switch of claim 1, the set of plugboards comprising: the system comprises a power supply plugboard, a control plugboard, a test system connecting plugboard, a plurality of channel plugboards and a cascade expansion plugboard; one end of each plug board is provided with a plug board interface; each plug board interface is respectively connected with a corresponding interface in the back board, wherein the plug board interface of the cascaded expansion plug board is connected with the cascaded expansion interface in the back board, so that the cascaded expansion plug board is connected into the cascaded expansion interface in the back board.
3. The dynamometer switch of claim 2,
the other end of the power supply plugboard is provided with a corresponding power supply access port for accessing a power supply;
the other end of the control plug board is provided with a corresponding main communication access port and a corresponding slave communication access port, the main communication access port is used for connecting a remote computer, and the slave communication access port is used for receiving signals;
the other end of the test system connecting plug board is provided with a corresponding test system access port for connecting with a dynamometer system;
the other end of each channel plug board is respectively provided with a corresponding dynamometer access port for connecting a dynamometer;
and the other end of the cascade expansion plugboard is provided with a corresponding expansion access port for cascade expansion of the channel.
4. The dynamometer switcher of claim 3, wherein the control plugboard is provided with a dial switch and a single chip microcomputer;
the dial switch is used for setting the number of channels;
the single chip microcomputer is used for recognizing an operation instruction, displaying a current channel, controlling channel switching, controlling communication and dialing a switch.
5. A multiple dynamometer switch cascade apparatus including a plurality of dynamometer switches of any one of claims 1 through 4; the switches are sequentially connected one by one in a hierarchy progressive mode; in any two adjacent switchers, one of the switchers is connected with the test system access port on the test system connecting plug board of the other switcher through the extension access port on the cascading extension plug board.
6. The cascade apparatus of claim 5, wherein any of the switches is configured as a master switch, and all of the switches except the master switch are configured as slave switches; the main communication access port of the main switcher is connected to the serial port of the remote computer; and the slave communication access port of the master switcher is connected with the master communication access port of one of the slave switchers.
7. The method of controlling channel switching in a multiple dynamometer switch cascade device of claim 6, comprising the steps of:
the main switcher receives a channel switching instruction;
the main switcher sends an instruction for disconnecting the current connection channel;
receiving an instruction for disconnecting the currently connected channel from the switch and disconnecting the currently connected channel;
the main switcher sends a command for connecting a target channel after receiving the command for successfully disconnecting;
receiving an instruction of connecting the target channel from the switcher and connecting the target channel;
and the main switcher changes the current channel display after receiving the command of successful connection.
8. The method as claimed in claim 7, wherein the step of the master switch receiving the channel switch command includes:
inputting a channel switching instruction on a remote computer;
the remote computer issues a channel switching instruction to the main switcher through the serial port;
the main switcher receives a channel switching command.
9. The method according to claim 7, wherein the step of receiving the instruction to disconnect the currently connected channel from the switch and disconnecting the currently connected channel includes:
a. the slave switcher directly connected with the master switcher receives an instruction for disconnecting the current connection channel;
b. the slave switch confirming that a currently connected channel is included in the channel of the slave switch;
c. the slave switch disconnects the currently connected channel;
d. the slave switch confirming that a currently connected channel is not included in the channel of the slave switch;
e. the slave switch sends an instruction of disconnecting the current connection channel to a slave switch of a next level;
f. and repeating the steps a to e by the slave switcher of the next level so as to finally disconnect the currently connected channel.
10. The method according to claim 7, wherein the slave switch receives a command to connect to the target channel and connects to the target channel. The method specifically comprises the following steps:
g. receiving an instruction for connecting a target channel from a switcher;
h. the slave switcher confirms that a target channel needing to be connected is contained in the channel of the slave switcher;
i. the slave switcher is connected with a target channel;
j. the slave switcher confirms that a target channel needing to be connected is not contained in the channel of the slave switcher;
k. the slave switch sends an instruction of connecting the target channel to a slave switch of a next level;
repeating the steps g-k by the slave switcher of the next layer to finally connect the target channel needing to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911090029.2A CN110954825B (en) | 2019-11-08 | 2019-11-08 | Dynamometer switcher, cascading device of multiple dynamometer switcher and control method of cascading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911090029.2A CN110954825B (en) | 2019-11-08 | 2019-11-08 | Dynamometer switcher, cascading device of multiple dynamometer switcher and control method of cascading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110954825A true CN110954825A (en) | 2020-04-03 |
| CN110954825B CN110954825B (en) | 2023-06-02 |
Family
ID=69976668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911090029.2A Active CN110954825B (en) | 2019-11-08 | 2019-11-08 | Dynamometer switcher, cascading device of multiple dynamometer switcher and control method of cascading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110954825B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879637A (en) * | 2022-05-20 | 2022-08-09 | 上海电子信息职业技术学院 | Vehicle body control module test system and test method |
| CN115470167A (en) * | 2022-11-01 | 2022-12-13 | 昆山龙雨智能科技有限公司 | Expansion device, method, apparatus and storage medium |
| CN115774174A (en) * | 2021-09-07 | 2023-03-10 | 南京南瑞继保电气有限公司 | Thyristor Equipment Tester |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217164U (en) * | 2011-08-29 | 2012-05-09 | 广州市纬志电子科技有限公司 | Programmable control host of central control system |
| CN104580934A (en) * | 2015-01-09 | 2015-04-29 | 武汉理工大学 | Expansion method and device for multichannel video switchers |
| CN206019924U (en) * | 2016-08-29 | 2017-03-15 | 上海光华仪表有限公司 | A kind of test system that is debugged for multiple stage nuclear safe level pressure transmitter simultaneously |
| JP2018031734A (en) * | 2016-08-26 | 2018-03-01 | 株式会社明電舎 | Test system of drive train and test method of drive train |
| CN209280273U (en) * | 2018-12-21 | 2019-08-20 | 深圳市恒芯智能装备有限公司 | LED test card |
-
2019
- 2019-11-08 CN CN201911090029.2A patent/CN110954825B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202217164U (en) * | 2011-08-29 | 2012-05-09 | 广州市纬志电子科技有限公司 | Programmable control host of central control system |
| CN104580934A (en) * | 2015-01-09 | 2015-04-29 | 武汉理工大学 | Expansion method and device for multichannel video switchers |
| JP2018031734A (en) * | 2016-08-26 | 2018-03-01 | 株式会社明電舎 | Test system of drive train and test method of drive train |
| CN206019924U (en) * | 2016-08-29 | 2017-03-15 | 上海光华仪表有限公司 | A kind of test system that is debugged for multiple stage nuclear safe level pressure transmitter simultaneously |
| CN209280273U (en) * | 2018-12-21 | 2019-08-20 | 深圳市恒芯智能装备有限公司 | LED test card |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115774174A (en) * | 2021-09-07 | 2023-03-10 | 南京南瑞继保电气有限公司 | Thyristor Equipment Tester |
| CN114879637A (en) * | 2022-05-20 | 2022-08-09 | 上海电子信息职业技术学院 | Vehicle body control module test system and test method |
| CN115470167A (en) * | 2022-11-01 | 2022-12-13 | 昆山龙雨智能科技有限公司 | Expansion device, method, apparatus and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110954825B (en) | 2023-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110954825B (en) | Dynamometer switcher, cascading device of multiple dynamometer switcher and control method of cascading device | |
| US6912606B2 (en) | Generic serial bus architecture | |
| CN103983884B (en) | Multi-core cable test system and method | |
| CN108983082A (en) | Matrix switch device and system | |
| US20090063732A1 (en) | KVM switch and method for controlling the same | |
| CN111930574A (en) | SSD test system and SSD test method | |
| CN115794702A (en) | Interface switching device, server system and interface switching method | |
| CN110098541B (en) | USB Hub with interface blind-plug function and implementation method | |
| US7236143B2 (en) | System, apparatus and method for configuring identification of a display | |
| CN106921408A (en) | The test system and method for serial bus communication circuit | |
| CN102375099A (en) | Portable-type electronic device testing system | |
| CN106803776B (en) | Radio frequency front end testing device and radio frequency front end testing method | |
| CN113032306A (en) | Simulation machine and simulation test method | |
| CN115628759B (en) | Testing device for optical fiber strapdown attitude and heading reference system | |
| CA1146669A (en) | Simulator for bit and byte synchronized data network | |
| CN115914873A (en) | Testing device and testing method of multi-node management board | |
| CN211061971U (en) | One-to-two test host and system | |
| CN219641833U (en) | Processing device based on aviation system test signal disconnection switching | |
| JP2000347720A (en) | Testing device | |
| JP2001208404A (en) | Transmission controller for air conditioner | |
| CN216132590U (en) | Connecting device | |
| CN112379249B (en) | Modularization relay route selection device | |
| CN213275807U (en) | Car machine test circuit, test equipment and vehicle | |
| CN116737484A (en) | Functional component testing method and device, storage medium and electronic equipment | |
| CN107748724B (en) | Communication interface expanding device, controller and communication interface expanding method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |