A PHM host test bench

Abstract

The utility model discloses a PHM host test bench, including: a circuit breaker, a programmable power supply, a network power manager, an MVB master station, a host computer, a keyboard and mouse, a display, a PoE network switch, a communication interface switching circuit, a high-definition camera, and a PHM host of a tested device; the circuit breaker is used to control a working power supply of a PHM host test bench to ensure the safety of electricity use; the display is used to display the test process and test data, which is convenient for testers to operate the test; the high-definition camera is used to shoot the PHM host of the tested device placed on the test bench. The utility model reduces the technical threshold of testers and tedious manual testing by combining network communication technology, USB communication technology, and image recognition technology, and realizes comprehensive, accurate, reliable, and efficient autonomous detection of the PHM host.

Description

Technical Field

[0001] The utility model belongs to the field of functional detection of a rail train onboard host machine and relates to a PHM host machine test bench. Background Art

[0002] At present, the rapid development of urbanization is accompanied by a surge in the demand for urban rail transit transportation. In the rail transit industry, train driving safety must be considered. Among the various subsystems of the train, the train health management system is an important basis for diagnosing the health of each subsystem of the train; in the process of train operation, the health status of each subsystem of the train is predicted according to the data model, and the PHM host becomes an indispensable loading equipment for the vehicle; at present, there is no test equipment that can meet the functional test of the PHM host. The functions are mainly manually tested and recorded by the testers themselves, and the test is not comprehensive enough and the credibility is not high. If functional problems of the equipment are found after installation, it will greatly affect the operation and production of the vehicle; at present, in order to ensure the factory quality of the PHM host, the PHM host needs to be routinely tested before it is sold; designing a PHM host test bench can not only avoid human errors, but also ensure the efficiency of the test, which has great practical significance. Utility Model Content

[0003] Based on this, in view of the deficiencies in the prior art, the purpose of the present invention is to provide a PHM host test bench.

[0004] In order to achieve the above purpose, the solution of the utility model includes: a circuit breaker, a programmable power supply, a network power manager, an MVB master station, a host computer, a PoE network switch, a communication interface switching circuit, a high-definition camera, and a PHM host.

[0005] The input terminal of the circuit breaker is connected to the output terminal of the external alternating current power source AC.

[0006] The utility model provides a PHM host test bench with power input connection terminals such as AC 220V live wire L, AC 220V neutral wire N, and ground wire PE, wherein the external input AC 220V live wire L is connected to the D1 terminal, the external input AC 220V neutral wire N is connected to the D2 terminal, and the external input AC 220V ground wire PE is connected to the D12 terminal. The external input power supply is connected to the corresponding terminal to provide a total power supply for the PHM host test bench, and a circuit breaker is installed on the PHM host test bench to control the working power supply of the PHM host test bench.

[0007] The output end of the circuit breaker provides power for the programmable power supply, host computer, and PoE network switch.

[0008] The programmable power network port is connected to the PoE network switch via a network cable.

[0009] Programmable power output interface, through 1.5mm 2 The two-core sheathed cable is connected to the input interface of the network power manager to provide management power for the network power manager.

[0010] Network power manager output interface, through 1.5mm 2 The two-core sheathed cable is connected to the PHM host to provide power to the PHM host.

[0011] The network power manager is connected to the PoE network switch through a network cable. The PoE network switch communicates with the network power manager through the network cable and also supplies power to the network through the network cable. This connection method can reduce one type of PHM host test bench wiring.

[0012] The host computer USB has an interface, which is connected to the MVB master station through a USB cable. The MVB master station exchanges data with the host computer through USB communication. The host computer can determine whether the PHM host device is normal through the interactive data.

[0013] The host computer has a network port, which is connected to the network port of the PoE network switch through a network cable. At the same time, the network port of the PoE network switch is also connected to the programmable power supply, network power manager, communication interface switching circuit, high-definition camera, and PHM host through the network cable. The host computer can communicate with the programmable power supply, network power manager, communication interface switching circuit, high-definition camera, and PHM host through the PoE network switch.

[0014] The keyboard and mouse use a wired keyboard and mouse, which is connected to the USB interface of the host computer through its own USB plug. The tester inputs execution instructions to the host computer through the keyboard and mouse, which is convenient for the tester to operate the test.

[0015] The host computer HDMI interface is connected to the monitor via an HDMI video cable. The monitor displays the host computer data information in real time via the HDMI cable, which is convenient for the tester to operate the test.

[0016] The communication interface switching circuit is connected to the PoE network switch through a network cable. The PoE network switch communicates with the communication interface switching circuit through the network cable and also supplies power to the network communication interface switching circuit network through the network cable. This connection method can reduce one type of PHM host test bench wiring.

[0017] The HD camera is connected to the PoE network switch via a network cable, and the PoE network switch supplies power to the HD camera network via the network cable. This connection method can reduce one type of PHM host test bench wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides an electrical structure diagram of a PHM host test bench. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0021] See also Figure 1 The utility model discloses a PHM host test bench, comprising: a circuit breaker (10), a programmable power supply (20), a network power manager (30), an MVB master station (40), a host computer (50), a PoE network switch (60), a communication interface switching circuit (70), a high-definition camera (80), and a PHM host (90).

[0022] The AC 220V input power supply is controlled by a circuit breaker (10). The external input AC 220V live wire L is connected to the D1 terminal, the external input AC 220V neutral wire N is connected to the D2 terminal, and the external input AC 220V ground wire PE is connected to the D12 terminal.

[0023] The programmable power supply (20) can output a DC voltage of 50V to 150V. The programmable power supply (20) passes through a 1.5mm 2 The two-core sheathed cable is connected to the input terminal interface of the network power manager.

[0024] The network interface of the programmable power supply (20) is connected to the network port of the PoE network switch (60) via a network cable.

[0025] The network interface of the network power manager (30) is connected to the network port of the PoE network switch (60) via a network cable, and the PoE network switch (60) provides power to the network power manager (30) via the network cable.

[0026] The output terminal of the network power manager (30) is connected to the power interface of the PHM host (90) via a 1.5 mm 2The two-core sheathed wire is connected; the network power manager (30) uses STM32F407RCT6 as a processor, AD7606BSTZ as an analog quantity sampling chip, and a 4.3-inch display screen as a human-computer interaction interface; the network power manager (30) has a two-channel analog quantity acquisition function, and the AD7606BSTZ chip collects the voltage and current values ​​of the PHM host (90) at the time of power-on in real time; the network power manager (30) has a power input and power output interface for controlling the power supply circuit of the PHM host (90). The STM32F407VET6 processor and the AD7606BSTZ chip use the SPI serial communication mode, the STM32F407RCT6 processor obtains the voltage and current sampling data and the power input and power output contact states in real time, and the network power manager (30) sends them to the host computer through the network interface, and displays the voltage and current values ​​and the power input and power output contact state information in real time on a 4.3-inch display screen. The STM32F407RCT6 processor determines whether the PHM host power supply voltage and current exceed the limit based on the obtained voltage and current sampling data, and controls the on and off of the two power output contacts in real time to prevent further damage to the faulty equipment during the test process.

[0027] The host computer (50) is connected to the MVB master station (40) via a USB communication interface of the host computer (50).

[0028] The host computer (50) is connected to the display (52) via an HDMI video cable.

[0029] The network port of the host computer (50) is connected to the network port of the PoE network switch (60) via a network cable.

[0030] The host computer (50) has a USB interface, which is connected to a keyboard and a mouse (51) via a USB cable.

[0031] The host computer (50) is installed with PHM host (90) testing software. The PHM host (90) testing software has a one-key start function for testing the entire PHM host (90) and a single item testing function. After the test is completed, a PDB report document is automatically generated, and test opinions are given for non-conforming items, so that maintenance personnel can verify and rectify the PHM host (90).

[0032] The PoE network switch (60) provides multiple network interfaces and has a maximum network power supply capacity of 20W.

[0033] The PoE network switch (60) is connected to the network ports of the host computer (50) and the PHM host (90) through a network cable. The host computer (50) sends instructions to the PHM host (90) through the switch to complete the network interface and TRDP interface detection of the PHM host (90).

[0034] The PoE network switch (60) is connected to the network ports of the host computer (50) and the high-definition camera (80) through a network cable, and the host computer (50) obtains the pictures taken by the high-definition camera (80) through the PoE network switch (60) to complete the appearance inspection of the PHM host before delivery.

[0035] The network interface of the communication interface switching circuit (70) is connected to the network port of the PoE network switch (60) via a network cable, and the PoE network switch (60) provides power to the communication interface switching circuit (70) via the network cable.

[0036] The MVB output interface of the communication interface switching circuit (70) is connected to the MVB interface of the PHM host (90) via an MVB network cable (male and female). The communication interface switching circuit (70) uses an STM32F407VET6 as a processor and a TXB0108PWR chip as a channel switching electronic switch. After the communication interface switching circuit (70) receives an instruction sent by a host computer, the STM32F407VET6 processor enables and disables two TXB0108PWR chips to achieve switching between the PHM host MVB long communication interface and the MVB redundant communication interface.

[0037] The above description is only a preferred example of the utility model, and is not limited to the utility model. Although the utility model is described in detail with reference to the above examples, it is still possible for those skilled in the art to modify the technical solutions recorded in the above embodiments, or to replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A PHM host test bench, comprising: Circuit breaker (10), program-controlled power supply (20), network power manager (30), MVB master station (40), host computer (50), keyboard and mouse (51), PoE network switch (60), communication interface switching circuit (70), high-definition camera (80), PHM host (90); The input end of the circuit breaker (10) is connected to the output end of the external alternating current power source AC; The output end of the circuit breaker (10) provides power to the programmable power supply (20), the host computer (50), and the PoE network switch (60); The programmable power supply (20) is connected to the PoE network switch (60) via a network cable; The output end of the programmable power supply (20) is connected to the interface input end of the network power supply manager (30); The interface output end of the network power manager (30) is connected to the PHM host (90); The network power manager (30) is connected to the PoE network switch (60) via a network cable; The MVB master station (40) is connected to the host computer (50); The host computer (50) is connected to the PoE network switch (60) via a network cable, connected to the keyboard and mouse (51) via a USB cable, and connected to the display (52) via an HDMI cable; The communication interface switching circuit (70) is connected to the PoE network switch (60) via a network cable; The high-definition camera (80) is connected to the PoE network switch (60) via a network cable.

2. A PHM host test bench according to claim 1, characterized in that: The AC 220V input power supply is controlled by a circuit breaker (10), the external input AC 220V live wire L is connected to the D1 terminal, the external input AC 220V neutral wire N is connected to the D2 terminal, and the external input AC 220V ground wire PE is connected to the D12 terminal.

3. The PHM host test bench according to claim 1, characterized in that: The network power manager (30) is connected to the PoE network switch (60) via a network cable, and the PoE network switch (60) supplies network power to the network power manager (30) via the network cable.

4. The PHM host test bench according to claim 1, characterized in that: The communication interface switching circuit (70) is connected to the PoE network switch (60) via a network cable, and the PoE network switch (60) supplies network power to the communication interface switching circuit (70) via the network cable.

5. The PHM host test bench according to claim 1, characterized in that: The MVB master station (40) is connected to the host computer (50) via a USB communication interface.

6. The PHM host test bench according to claim 1, characterized in that: The keyboard and mouse (51) on the test bench are connected to the host computer (50) via a USB communication interface.

7. According to the PHM host test bench of claim 1, it is characterized by: The camera (80) is connected to the PoE network switch (60) via a network cable, and the PoE network switch (60) supplies network power to the high-definition camera (80) via the network cable.

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