A weapon equipment vehicle electrical detection system based on multi-bus and multi-signal

Abstract

The present invention provides a weapon equipment vehicle electrical detection system based on multiple buses and multiple signals, which adopts the form of main control + bus + test unit. The main control realizes detection process control, fault data interpretation, and basic functions of human-computer interaction for the tested object, and the test unit realizes test stimulation, signal acquisition, signal communication, and power supply and distribution control for the tested support object. The present invention can realize various test requirements such as technical status inspection, electrical function inspection, function test, main performance test, parameter adjustment, and grassroots level fault diagnosis of the tested support object. While realizing modularization, serialization, generalization, automation, intelligence and standardization of detection equipment, it can improve the integration and detection efficiency of detection equipment, adapt to various types of support objects, and reduce equipment cost, detection complexity, maintenance cycle, etc.

Description

Technical Field

[0001] The invention belongs to the field of weapon equipment maintenance and detection, and in particular relates to a weapon equipment vehicle electrical detection system based on multiple buses and multiple signals. Background Art

[0002] Weapon equipment testing is the basis and premise for weapon equipment performance monitoring, fault prediction and diagnosis, health management, combat effectiveness assessment and regeneration. According to the current development status of the army's automatic testing equipment and the development of the army's weapons and equipment, the technical development direction of the army's automatic testing equipment should be: modularization, serialization and generalization, automation and intelligence, and standardization. That is, the overall structure should be modular, the detection function should be serialized and generalized, the measurement and control method should be automated and intelligent, and the technical implementation should be standardized. The existing testing methods are mostly expanded, unitized, and used with general testing instruments to test the functional performance of various equipment, which affects the overall testing efficiency, prolongs the testing cycle, and increases the testing and maintenance costs.

[0003] With the rapid development of modern science and technology, a large number of high-tech achievements have been applied to the army's weapons and equipment systems, making the army's weapons and equipment increasingly complex. In order to ensure the reliability, maintainability and tactical and technical performance of the army's weapons and equipment systems and give full play to their due combat effectiveness, it is necessary to greatly improve the status monitoring, performance testing and fault diagnosis level of the weapons and equipment systems. Summary of the invention

[0004] To solve the above problems, the present invention provides a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal, which can improve the integration and detection efficiency of the detection equipment while realizing modularization, serialization, generalization, automation, intelligence and standardization of the detection equipment.

[0005] A multi-bus and multi-signal weapon equipment vehicle electrical detection system includes a main control unit and a test unit, and the test unit includes a non-bus equipment electrical test subunit, a protection system test subunit, and an integrated electrical system test subunit;

[0006] The main control unit is used to realize the detection process control, fault data interpretation and human-computer interaction functions of the tested support object, and is also used to forward the dispatch instruction information of the support command center to the test unit, and to exchange real-time status information data with the tested support object; wherein the tested support object includes the general instrument, starting system and chassis power supply system of the non-bus equipment chassis electrical system, the fire extinguishing system, the smoke bomb / grenade control box, the three-defense system, the integrated electrical system commander / driver task terminal, the power supply and distribution box, and the acquisition box;

[0007] The non-bus equipment electrical test subunit is used to perform functional tests on the universal instrument, the starting system, and the chassis power supply system of the non-bus equipment chassis electrical system;

[0008] The protection system test subunit is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the fire extinguishing system, smoke bomb / shrapnel control box and three-defense system;

[0009] The integrated electrical system test subunit is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the integrated electrical system commander / driver task terminal, power supply and distribution box, and acquisition box.

[0010] Further, the non-bus equipment electrical test subunit includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module and a digital input and output module;

[0011] Among them, the digital multimeter module is used to detect the voltage and current of the non-bus equipment chassis electrical system; the multi-channel parallel DA module and the conditioning module are used together to output the analog sensor voltage of -30V to +30V, and the analog sensor voltage is used to detect general instruments; the digital input and output module is used to output a logic high level, and the logic high level is used to detect the starting system.

[0012] Further, the protection system test subunit includes an isolated parallel AD module, a digital input and output module, a multi-channel parallel DA module, a conditioning module, an analog load module, a multi-channel control switch module, a serial communication module and a CAN bus module;

[0013] Among them, the isolated parallel AD module is used to realize analog quantity acquisition in the voltage range of -30V to +30V, so as to detect the acquisition function of the fire extinguishing control box sensor and the fire extinguishing bottle control function in the fire extinguishing system; the digital quantity input and output module is used to input and output logic high level, and the logic high level is used to detect the alarm signal output of the toxic gas alarm and radiation alarm in the three-defense system, and is used to detect the firing function of the smoke bomb / shrapnel control box; the multi-channel parallel DA module and the conditioning module are used in conjunction to output the analog sensor voltage of -30V to +30V, and the analog sensor voltage is used to detect the acquisition function of the fire extinguishing control box sensor; the analog load module and the multi-channel control switch module are used to simulate multi-channel smoke bomb / shrapnel loads, so as to detect the firing function of the smoke bomb / shrapnel control box; the serial communication module supports RS232 / RS485 / RS422 communication; the CAN bus module supports CAN2.0A / B protocol to realize data communication with the fire extinguishing system and the smoke bomb / shrapnel control box.

[0014] Further, the protection system test unit includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module, a multiplexing switch module, a programmable resistance module, a digital input and output module, a MIC bus module, a CAN bus module, a 1553B bus module and a FlexRay bus module;

[0015] Among them, the digital multimeter module is used to detect the voltage of the power supply and distribution box; the multi-channel parallel DA module and the conditioning module are used together to output the analog sensor voltage of -30V to +30V; the multiplexing switch module and the programmable resistor module are used to realize the multi-channel analog sensor resistance with an adjustable range of 0 to 3kΩ, and the multi-channel analog sensor resistance is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the acquisition box in the integrated power system; the digital input and output module is used to input and output logic high level, and the logic high level is used to detect the switch control function of the captain / driver task terminal; the MIC bus module, 1553B bus module, CAN bus module and FlexRay bus module are all used to detect the bus communication function of the captain / driver task terminal, among which the MIC bus module supports the communication working modes of PIM, RSM, DIM, and DOM; the 1553B bus module supports 1553B bus communication; the CAN bus module supports CAN2.0A / B protocol; and the FlexRay bus module supports FlexRay bus communication.

[0016] Further, a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal also includes an embedded controller;

[0017] The embedded controller is used to provide conventional drivers, application software, BIOS, operating system and configuration code to the main control unit; at the same time, the embedded controller communicates with the non-bus equipment electrical test subunit, the protection system test subunit and the comprehensive electrical system test subunit through the PXI bus function module, wherein the embedded controller controls 13 PXI bus function modules inserted into the PXI chassis backplane through the PCI-PCI bridge function, so that all PXI bus function modules inserted into the PXI chassis backplane are managed and coordinated through the embedded controller.

[0018] Further, a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal also includes a PXI bus chassis;

[0019] The PXI bus chassis provides mechanical support for the PXI bus function module inserted into the chassis, so that the PXI bus function module can be correctly connected to the connector on the PXI chassis backplane; at the same time, the PXI bus chassis is also used to provide a unified power supply and bus signal to achieve the correct transmission of various commands and data information of the PXI bus function module under program control on the PXI chassis backplane.

[0020] Beneficial effects:

[0021] 1. The present invention provides a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal, including a main control unit and a test unit, and the test unit includes a non-bus equipment electrical test sub-unit, a protection system test sub-unit, and an integrated electrical system test sub-unit, which can realize various test requirements such as technical status inspection, electrical function inspection, function test, main performance test, parameter adjustment, and grassroots level fault diagnosis of the tested support object; while realizing modularization, serialization, generalization, automation, intelligence and standardization of the detection equipment, it can improve the integration and detection efficiency of the detection equipment, adapt to a variety of support objects, and reduce equipment costs, detection complexity, maintenance cycle, etc.

[0022] 2. The present invention provides a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal, which can improve the status monitoring, performance detection and fault diagnosis level of the weapon equipment system, thereby ensuring the reliability, maintainability and tactical and technical performance of the army weapon equipment system, and giving full play to its due combat effectiveness.

[0023] 3. The present invention provides a weapon equipment vehicle electrical detection system based on multiple buses and multiple signals. The PXI bus chassis provides mechanical support for the PXI bus function modules inserted into the chassis, which can improve the stability of the weapon equipment vehicle electrical detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a principle block diagram of a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] The present invention discloses a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal. The detection equipment adopts the form of main control + bus + test unit. The main control adopts a portable computer device to realize the detection process control, fault data interpretation and human-computer interaction basic functions of the object under test. The test unit includes a universal test interface such as test excitation, signal acquisition, signal communication, power supply and distribution control for the object under test, and isolation, conditioning and matching of the measured signal. It mainly includes vehicle instrument bus interfaces such as RS-232 / RS-422 / RS-485 bus, CAN bus, 1553B bus, MIC bus, FlexRay bus, etc. Each functional unit of the test unit is composed of PXI bus instrument platform, data acquisition class, and communication bus class modular products. The vehicle electrical detection system realizes communication and control between the main control unit and the test unit through the LAN bus, and finally realizes the technical status inspection, functional testing, main performance detection and grassroots level fault diagnosis of the guarantee object.

[0027] Specifically, Figure 1 As shown, a weapon equipment vehicle electrical detection system based on multi-bus and multi-signal includes a main control unit and a test unit, and the test unit includes a non-bus equipment electrical test subunit, a protection system test subunit, and an integrated electrical system test subunit;

[0028] The main control unit is used to realize the detection process control, fault data interpretation and human-computer interaction functions of the tested support object, and is also used to forward the dispatch instruction information of the support command center to the test unit, and to exchange real-time status information data with the tested support object; wherein, the tested support object includes the general instrumentation, starting system and chassis power supply system of the non-bus equipment chassis electrical system, the fire extinguishing system, the smoke bomb / grenade control box, the three-defense system, the integrated electrical system commander / driver task terminal, the power supply and distribution box, and the acquisition box.

[0029] It should be noted that the main control unit 1 is composed of a reinforced portable computer installed with the main control server program software; wherein the reinforced portable computer includes a display screen, USB and Ethernet communication interfaces; and realizes the general embedded computer functions, including providing compatible functions such as drivers, application software, BIOS, operating system, configuration code, etc. corresponding to conventional computers.

[0030] The non-bus equipment electrical test subunit is used to perform functional tests on the general instruments, starting system, and chassis power supply system of the non-bus equipment chassis electrical system; the protection system test subunit is used to perform status checks, fault diagnosis, fault location, and maintenance instructions on the fire extinguishing system, smoke bomb / grenade control box, and three-defense system; the integrated electrical system test subunit is used to perform status checks, fault diagnosis, fault location, and maintenance instructions on the commander / driver task terminal, power supply and distribution box, and collection box of the integrated electrical system.

[0031] It should be noted that the Ethernet communication architecture is used between the modules of each unit; among them, the main control unit has the ability to transmit dispatch instruction information to the guarantee command center and interact with the tested object in real time to meet the future information needs and real-time and accurate guarantee needs; the dedicated test unit is divided into three sub-units: non-bus equipment electrical test sub-unit, protection system test sub-unit, and comprehensive power system test sub-unit. It mainly provides test excitation, signal acquisition, signal communication, power supply and distribution control for the tested guarantee object, and provides general test interfaces such as isolation, conditioning, and matching of the tested signal. The dedicated test unit has the function of receiving test instructions from the main control test unit and uploading test result data information.

[0032] Furthermore, the non-bus equipment electrical test subunit can detect the indication functions of common instruments such as water temperature gauge, oil temperature gauge, oil pressure gauge, etc. Detect important parameters of the starting system such as starting voltage and starting current. Detect important parameters of chassis power supply system such as generator and battery. Figure 1 The middle component 7 is a non-bus equipment electrical test subunit, which includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module and a digital input and output module, among which the digital multimeter module can realize the voltage and current detection of the electrical system; the multi-channel parallel DA module and the conditioning module can be used together to output an analog sensor voltage of -30V to +30V for detecting general instruments; the digital input and output module can logically control the output of a high level for detecting the startup system.

[0033] It should be noted that the digital multimeter module realizes the voltage acquisition range: 0V~30V, the current acquisition range: 0A~2500A; the multi-channel parallel DA module and the conditioning module cooperate to realize the analog sensor voltage output range: -30V~+30V; the digital input and output module realizes the logic control output high level range: 26V±4V.

[0034] Furthermore, the protection system test subunit can detect the sensor acquisition function of the fire extinguishing control box and the fire extinguishing bottle control function, detect the firing function of the smoke bomb / shrapnel bomb control box, and detect the alarm signal output of the toxic gas alarm and radiation alarm. Figure 1 The middle component 8 is a protection system test unit, which includes an isolated parallel AD module, a digital input and output module, a multi-channel parallel DA module, a conditioning module, an analog load module, a multi-channel control switch module, a serial communication module and a CAN bus module, etc. Among them, the isolated parallel AD module realizes analog quantity acquisition in the voltage range of -30V to +30V, and cooperates with the fire extinguishing control box sensor acquisition function and the fire extinguishing bottle control function; the digital input and output module can logically control the input and output high level to detect the alarm signal output of the toxic gas alarm and the radiation alarm, and cooperate with the detection of smoke screens The multi-channel parallel DA module and the conditioning module can be used together to output the analog sensor voltage of -30V to +30V, which is used to detect the sensor acquisition function of the fire extinguishing control box; the analog load module and the multi-channel control switch module can simulate the load of multiple smoke bombs and shrapnel shells, and cooperate with the detection of the firing function of the smoke bomb / shrapnel control box; the serial communication module supports RS232 / RS485 / RS422 communication and the CAN bus module supports CAN2.0A / B protocol to realize data communication with the fire extinguishing system and the smoke bomb / shrapnel control box.

[0035] It should be noted that the isolated parallel AD module realizes the analog quantity acquisition range: -30V~+30V; the multi-channel parallel DA module and the conditioning module cooperate to realize the analog sensor output range: -30V~+30V; the digital input and output module realizes the digital quantity acquisition high level range: 26V±4V, and the logic control output high level range: 26V±4V; the analog load module and the multi-channel control switch module cooperate to realize the multi-channel simulation of smoke bombs and shrapnel load range: 100Ω±5Ω; the serial communication module supports RS232 / RS485 / RS422, and the maximum communication rate is 115.2kbps; the CAN bus module supports CAN2.0A / B protocol specifications, and the communication rate is 5kbps~1Mbps.

[0036] Furthermore, the integrated electrical system test subunit can detect the bus communication function and switch control function of the driver / command task terminal, and has the function of online analysis of bus data. Figure 1 The middle component 9 is a protection system test unit, which includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module, a multiplexing switch module, a programmable resistor module, a digital input and output module, a MIC bus module, a 1553B bus module, a CAN bus module and a FlexRay bus module, etc. Among them, the digital multimeter module can realize the voltage detection of the power supply equipment; the multi-channel parallel DA module and the conditioning module can be used together to output the analog sensor voltage of -30V to +30V, and the multiplexing switch module and the programmable resistor module can realize the analog sensor voltage of multiple channels with an adjustable range of 0 to 3kΩ. The resistors are used to cooperate with the technical status inspection and fault diagnosis, fault location and maintenance guidance functions of the acquisition box and other components; the digital input and output modules can logically control the input and output high levels, and can detect the switch control function of the commander / driver task terminal; the MIC bus module supports PIM, RSM, DIM, DOM and other communication working modes, the 1553B bus module supports 1553B bus communication, the CAN bus module supports CAN2.0A / B protocol and the FlexRay bus module supports FlexRay bus communication, which are used to detect the bus communication function of the commander / driver task terminal.

[0037] It should be noted that the digital multimeter module realizes the analog voltage acquisition range: 0V~300V; the digital input and output module realizes the logic control output high level range: 26V±4V, the digital acquisition high level range: 26V±4V; the multiplexing switch module and the programmable resistor module cooperate to realize the multi-channel analog sensor resistance range: 0~3kΩ; the multi-channel parallel DA module and the conditioning module cooperate to realize the analog sensor voltage output range: -30V~+30V; the CAN bus module supports the CAN2.0A / B protocol specification, and the communication rate is 5kbps~1Mbps; the MIC bus module supports PIM, RSM, DIM, DOM and other working modes, and the maximum communication rate is 2Mb / s; the 1553B bus module supports the 1553B protocol communication with a maximum data transmission rate of 1Mbps and bidirectional transmission characteristics; the FlexRay bus module adopts the command / response protocol, and the maximum communication rate is 10Mb / s.

[0038] It should be noted that the modules with repeated names in the three subunits, namely, the non-bus equipment electrical test subunit, the protection system test subunit, and the integrated electrical system test subunit, are the same module in the PXI bus chassis and are shared by various functional units.

[0039] Furthermore, the weapon equipment vehicle electrical detection system of the present invention also includes an embedded controller and a PXI bus chassis, wherein the embedded controller is used to realize general embedded computer functions, including providing compatible functions such as drivers, application software, BIOS, operating system, configuration code, etc. corresponding to conventional computers, so as to realize the control of 13 PXI bus function modules inserted into the PXI chassis backplane by the embedded computer through the PCI-PCI bridge function, so that all modules inserted into the PXI system chassis backplane are managed and coordinated through the embedded system controller; the PXI bus chassis provides mechanical support for the PXI bus function modules inserted into the chassis, so that the PXI modules are correctly connected to the connectors on the bus backplane; and provides unified power supply and bus signals to realize the correct transmission of various commands, data and other information of the PXI modules under program control on the bus backplane.

[0040] In summary, the present invention discloses a vehicle electrical detection system based on multiple buses and multiple signals, which adopts the form of main control + bus + test unit; the main control unit adopts a portable computer device to realize the detection process control, fault data interpretation, and basic functions of human-computer interaction of the object under test, and it realizes communication and control with the test unit through the LAN bus. The test unit includes a universal test interface such as test excitation, signal acquisition, signal communication, power supply and distribution control for the object under test, and isolation, conditioning, and matching of the measured signal, which mainly includes RS-232 / RS-422 / RS-485 bus, CAN bus, 1553B bus, MIC bus, FlexRay bus and other vehicle instrument bus interfaces. The vehicle electrical detection system can realize technical status inspection, functional testing, main performance testing and grassroots level fault diagnosis of the security object, can improve the integration and detection efficiency of the detection equipment, adapt to a variety of security objects, reduce equipment costs, detection complexity, maintenance cycle, etc.

[0041] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may certainly make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A weapon equipment vehicle electrical detection system based on multi-bus and multi-signal, characterized in that: It includes a main control unit and a test unit, and the test unit includes a non-bus equipment electrical test subunit, a protection system test subunit, and an integrated electrical system test subunit; The main control unit is used to realize the detection process control, fault data interpretation and human-computer interaction functions of the tested support object, and is also used to forward the dispatch instruction information of the support command center to the test unit, and to exchange real-time status information data with the tested support object; wherein the tested support object includes the general instrument, starting system and chassis power supply system of the non-bus equipment chassis electrical system, the fire extinguishing system, the smoke bomb / grenade control box, the three-defense system, the integrated electrical system commander / driver task terminal, the power supply and distribution box, and the acquisition box; The non-bus equipment electrical test subunit is used to perform functional tests on the universal instrument, the starting system, and the chassis power supply system of the non-bus equipment chassis electrical system; The protection system test subunit is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the fire extinguishing system, smoke bomb / shrapnel control box and three-defense system; The integrated electrical system test subunit is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the integrated electrical system commander / driver task terminal, power supply and distribution box, and acquisition box; The non-bus equipment electrical test subunit includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module and a digital input and output module; Among them, the digital multimeter module is used to detect the voltage and current of the non-bus equipment chassis electrical system; the multi-channel parallel DA module and the conditioning module are used together to output the analog sensor voltage of -30V to +30V, and the analog sensor voltage is used to detect general instruments; the digital input and output module is used to output the logic high level, and the logic high level is used to detect the startup system; The protection system test subunit includes an isolated parallel AD module, a digital input and output module, a multi-channel parallel DA module, a conditioning module, a simulated load module, a multi-channel control switch module, a serial communication module and a CAN bus module; Among them, the isolated parallel AD module is used to realize analog quantity acquisition in the voltage range of -30V to +30V, so as to detect the acquisition function of the fire extinguishing control box sensor and the fire extinguishing bottle control function in the fire extinguishing system; the digital quantity input and output module is used to input and output logic high level, and the logic high level is used to detect the alarm signal output of the toxic gas alarm and the radiation alarm in the three-defense system, and is used to detect the firing function of the smoke bomb / shrapnel control box; the multi-channel parallel DA module and the conditioning module are used in conjunction to output the analog sensor voltage of -30V to +30V, and the analog sensor voltage is used to detect the acquisition function of the fire extinguishing control box sensor; the analog load module and the multi-channel control switch module are used to simulate multi-channel smoke bomb / shrapnel loads, so as to detect the firing function of the smoke bomb / shrapnel control box; the serial communication module supports RS232 / RS485 / RS422 communication; the CAN bus module supports CAN2.0A / B protocol to realize data communication with the fire extinguishing system and the smoke bomb / shrapnel control box; The comprehensive electrical system test subunit includes a digital multimeter module, a multi-channel parallel DA module, a conditioning module, a multiplexing switch module, a programmable resistance module, a digital input and output module, a MIC bus module, a CAN bus module, a 1553B bus module and a FlexRay bus module; Among them, the digital multimeter module is used to detect the voltage of the power supply and distribution box; the multi-channel parallel DA module and the conditioning module are used together to output the analog sensor voltage of -30V to +30V; the multiplexing switch module and the programmable resistor module are used to realize the multi-channel analog sensor resistance with an adjustable range of 0 to 3kΩ, and the multi-channel analog sensor resistance is used to perform status inspection, fault diagnosis, fault location and maintenance guidance on the acquisition box in the integrated power system; the digital input and output module is used to input and output logic high level, and the logic high level is used to detect the switch control function of the captain / driver task terminal; the MIC bus module, 1553B bus module, CAN bus module and FlexRay bus module are all used to detect the bus communication function of the captain / driver task terminal, among which the MIC bus module supports the communication working modes of PIM, RSM, DIM, and DOM; the 1553B bus module supports 1553B bus communication; the CAN bus module supports CAN2.0A / B protocol; and the FlexRay bus module supports FlexRay bus communication.

2. A weapon equipment vehicle electrical detection system based on multi-bus and multi-signal as claimed in claim 1, characterized in that: Also included is an embedded controller; The embedded controller is used to provide conventional drivers, application software, BIOS, operating system and configuration code to the main control unit; at the same time, the embedded controller communicates with the non-bus equipment electrical test subunit, the protection system test subunit and the comprehensive electrical system test subunit through the PXI bus function module, wherein the embedded controller controls 13 PXI bus function modules inserted into the PXI chassis backplane through the PCI-PCI bridge function, so that all PXI bus function modules inserted into the PXI chassis backplane are managed and coordinated through the embedded controller.

3. A weapon equipment vehicle electrical detection system based on multi-bus and multi-signal as claimed in claim 2, characterized in that: Also includes PXI bus chassis; The PXI bus chassis provides mechanical support for the PXI bus function module inserted into the chassis, so that the PXI bus function module is correctly connected to the connector on the back panel of the PXI chassis; At the same time, the PXI bus chassis is also used to provide unified power supply and bus signals to realize the correct transmission of various commands and data information of the PXI bus functional modules under program control on the PXI chassis backplane.

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