Subway station one-way ticket recovery circuit board testing device

Abstract

The utility model relates to the related technical field of traffic equipment maintenance, in particular to a subway station one-way ticket recovery circuit board testing device, which is characterized in that an SMA control board testing table is connected with a display module through an IIC (inter-integrated circuit) communication line; the SMA control board comprises a test chip and an external circuit module; the test chip is electrically connected with the external circuit module and sends a control data signal to the external circuit module; a second serial port communication module and a working device are arranged in the external circuit module; the SMA control board test bench comprises a single-chip microcomputer, a first serial port communication module and a digital circuit module. The external circuit module is electrically connected with the single-chip microcomputer. The second serial port communication module is in communication connection with the first serial port communication module; the digital circuit module is electrically connected with the single-chip microcomputer. The subway station one-way ticket recovery circuit board testing device provided by the utility model can improve the maintenance efficiency of an SMA internal core board, shorten the maintenance period, specifically solve the problem of a maintenance part circuit, and improve the maintenance safety of a gate.

Description

Technical Field

[0001] The utility model belongs to the technical field related to transportation equipment maintenance, and in particular relates to a circuit board testing device for recycling single-trip tickets at a subway station. Background Art

[0002] With the increasing number of urban subway lines and the constant 24 / 7 operation of gates at each station, the failure rate of automatic ticket vending machines and gates within stations is high. SMA equipment failures occasionally occur. To identify a fault point, technicians often use the gate's built-in industrial control computer to access the maintenance system to roughly assess the overall health of the SMA. This obviously cannot test the specific SMA circuits, making it impossible to identify specific faults in the SMA control board or potential external circuitry failures. Changing the SMA testing method and establishing a maintenance environment that targets each SMA-controlled module can improve maintenance efficiency and targeted fault detection, while also improving the safety of circuit board components in secondary use.

[0003] The SMA system within a gate machine typically utilizes interoperability between core modules and between modules and the mechanical structure. The core component is the DSP (digital signal processor), which not only issues control commands to each module but also serves as the primary means of data collection and analysis. Furthermore, the construction of external circuits assists the operation of the SMA, and the external circuits of maintenance parts directly impact the use of the SMA.

[0004] The SMA test platform utilizes the gate's SMA control board and test platform to test the SMA board's circuit structure. Within the test device, a DSP test program can be built for the SMA system's single-trip ticket module. This test device transforms existing maintenance methods, resolving the issue of the SMA control board's inability to test it individually. It allows for more targeted troubleshooting of internal electronic board failures, enabling precise testing of every circuit within the repaired component.

[0005] Currently, electronic board testing primarily focuses on online operations, with most testing facilities and equipment being used online. This often involves powering on the equipment to verify normal operation. SMAs are equipped with their own maintenance systems for self-testing, but these tests only reveal operational status, with only a general indication of the fault. Currently, there is no effective method for accurately detecting the fault point on a circuit board.

[0006] The SMA control board contains a manufacturer-developed program that is fixed in the DSP's internal ROM. A replaceable core upper board is required to modify the internal program or implement program online simulation technology through CCS to retain the original program. The simulation operation is relatively complicated.

[0007] When testing the repaired board, it is impossible to ensure that there are no other hidden faults in the circuit board and that all components can operate normally, including loose SMAs inside the turnstile, aging sensors and motors, worn connectors, etc. Summary of the Invention

[0008] The purpose of the present invention is to provide a test device for one-way ticket recycling circuit boards in subway stations, which can improve the repair efficiency of the core board inside the SMA, shorten the repair cycle, specifically solve the circuit problems of repaired parts, and improve the maintenance safety of turnstiles.

[0009] For the convenience of understanding this technical solution, the explanations of the professional terms involved are as follows:

[0010] DSP (Digital Signal Processing) refers to digital signal processing technology, and a DSP chip refers to a chip that can implement digital signal processing technology.

[0011] An OLED (Organic Light-Emitting Diode) display is a display technology that uses organic light-emitting diodes as the light-emitting material.

[0012] The 232 protocol, also known as the RS-232 protocol, is a standard formulated by the Electronic Industries Association of the United States. This protocol stipulates important parameters such as the connection method, electrical characteristics, and transmission rate of serial communication, enabling reliable data communication between devices.

[0013] To achieve the above object, the utility model provides the following technical solution: A test device for a one-way ticket recycling circuit board of a subway station, including an SMA control board test bench, an SMA control board, a power supply module, a display module, a single-chip microcomputer, a first serial communication module, a digital circuit module, a test chip, an external circuit module, a second serial communication module and a working device; the output end of the power supply module is electrically connected to the SMA control board test bench and the SMA control board at the same time; the SMA control board test bench is connected to the display module through an IIC communication line; the SMA control board includes a test chip and an external circuit module; the test chip is electrically connected and sends a control data signal to the external circuit module; a second serial communication module and a working device are arranged in the external circuit module; the SMA control board test bench includes a single-chip microcomputer, a first serial communication module and a digital circuit module; the external circuit module is electrically connected to the single-chip microcomputer; the second serial communication module is communicatively connected to the first serial communication module; the digital circuit module is electrically connected to the single-chip microcomputer together; the working device is connected to the digital circuit module through a line and forms a control connection relationship; the display module outputs the data result of the single-chip microcomputer signal, facilitating the maintenance personnel to intuitively observe the situation of the board; the single-chip microcomputer serves as the processing core unit for input signals and output signals; the second serial communication module and the first serial communication module realize data communication between the single-chip microcomputer and the test chip.

[0014] As a further improvement of the utility model, the display module adopts an OLED display screen.

[0015] As a further improvement of the utility model, the test chip adopts a DSP test chip.

[0016] As a further improvement of the utility model, the second serial communication module and the first serial communication module are communicatively connected to each other by adopting a protocol.

[0017] As a further improvement of the utility model, the power supply voltage supplied by the power supply module to the SMA control board test bench and the SMA control board is volts.

[0018] As a further improvement of the utility model, an input signal module and an output signal module are arranged in the digital circuit module; the input signal module is used for receiving the output level signal from the SMA control board; the output signal module is used for sending a data instruction to the SMA control board, and the SMA control board makes corresponding circuit level changes by identifying the electrical signal.

[0019] As a further improvement of the present utility model, the working device includes a working motor, an electromagnet and an infrared induction module: the digital circuit module precisely controls the normal operation of the working motor, the electromagnet and the infrared induction module through electrical signals.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows: This technical solution replaces the link in daily maintenance where technicians are unable to test the repair part and determine the cause of the failure through the use of this test platform. The independently developed chip program can more effectively and accurately locate the circuit fault point; at the same time, the chip programming or simulation function is realized, and the development software can not erase the original factory program, without affecting the normal operation of the on-line turnstile; the test bench solves the problem that it is impossible to check other logic gate chips except for power supply faults; as the electronic SMA control board is continuously upgraded and updated, the program and the hardware circuit part can be similarly transformed, and the program can be compatible with the new board after transplantation. Brief Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] In the figure: 1. SMA control board test bench; 2. SMA control board; 3. Power supply module; 4. Display module; 5. Single-chip microcomputer; 6. Serial communication module; 7. Digital circuit module; 8. Input signal module; 9. Output signal module; 10. DSP test chip; 11. External circuit; 12. Serial communication module; 13. Working device. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1, the present utility model provides a technical solution: a one-way ticket recycling circuit board testing device for a subway station, including an SMA control board testing platform 1, an SMA control board 2, a power supply module 3, a display module 4, a single-chip microcomputer 5, a first serial communication module 6, a digital circuit module 7, a test chip 10, an external circuit module 11, a second serial communication module 12, and a working device 13; the output end of the power supply module 3 is electrically connected to both the SMA control board testing platform 1 and the SMA control board 2 at the same time; the SMA control board testing platform 1 is connected to the display module 4 through an IIC communication line; the SMA control board 2 includes a test chip 10 and an external circuit module 11; the test chip 10 is electrically connected and sends a control data signal to the external circuit module 11; a second serial communication module 12 and a working device 13 are arranged in the external circuit module 11; the SMA control board testing platform 1 includes a single-chip microcomputer 5, a first serial communication module 6, and a digital circuit module 7; the external circuit module 11 is electrically connected to the single-chip microcomputer 5; the second serial communication module 12 is communicatively connected to the first serial communication module 6; the digital circuit module 7 is electrically connected to the single-chip microcomputer 5 together; the working device 13 is connected to the digital circuit module 7 through a line and forms a control connection relationship; the display module 4 outputs data results of the signals of the single-chip microcomputer 5, facilitating maintenance personnel to intuitively observe the condition of the board; the single-chip microcomputer 5 serves as the core processing unit for input signals and output signals; the second serial communication module 12 and the first serial communication module 6 realize data communication between the single-chip microcomputer 5 and the test chip 10.

[0025] The display module 4 provided in this technical solution uses an OLED display screen, facilitating maintenance personnel to intuitively observe the condition of the board. The test chip 10 of this technical solution uses a DSP test chip as the core processor of the SMA control board; the working device 13 includes a working motor, an electromagnet, and an infrared sensing module: the digital circuit module 7 precisely controls and drives the working motor, electromagnet, and infrared sensing module to work normally through electrical signals.

[0026] An input signal module 8 and an output signal module 9 are arranged in the digital circuit module 7; the input signal module 8 is used to receive the output level signal from the SMA control board; the output signal module 9 is used to send a data instruction to the SMA control board 2, and the SMA control board 2 makes corresponding circuit level changes by identifying the electrical signal.

[0027] The second serial communication module 12 and the first serial communication module 6 are communicatively connected to each other using the 232 protocol; the power supply voltage provided by the power supply module 3 to the SMA control board testing platform 1 and the SMA control board 2 is 24V DC. Since 24V does not exceed the human body safety voltage of 36V, it can effectively prevent accidents such as electric shock to personnel in the usage scenario.

[0028] The test device of this technical solution can effectively improve the maintenance efficiency of the internal core board of the SMA, shorten the maintenance cycle, specifically solve the circuit problems of the maintenance parts, and improve the safety of turnstile maintenance. The technical problems that this technical solution can solve include:

[0029] 1) Use the DSP test chip to directly test its own maintenance parts and control the external circuit at the same time.

[0030] 2) After the SMA control board is tested, the maintenance parts can still be put into on-site operation normally.

[0031] 3) The test results can be visualized through the OLED display screen, improving the maintenance effect and real-time observation of parameters.

[0032] The overall design of this device: The SMA control board test platform is connected with three major parts: DSP function, input / output function, and display screen function. Among them, the DSP function includes JTAG scanning, program burning and simulation. The input / output function includes optocoupler circuit, NAND gate circuit, single-chip microcomputer circuit, serial communication circuit, etc. The display function mainly revolves around the OLED screen module, and the peripheral circuit of the test environment is built with hardware.

[0033] According to the actual circuit function requirements, the same DSP chip STMF2812PGFA as that on the maintenance parts is used; the external circuit of the test bench includes a single-chip microcomputer, optocoupler, 74LS21, RS232, and an OLED module; the DSP design is based on the connection sequence of the DSP and the lower-layer hardware circuit in the circuit diagram. After confirming whether the chip IO port is input or output, the pin configuration is made, and high and low levels are output according to the function requirements of the external circuit.

[0034] This test device realizes the mechanical structure control inside the SMA, and the independently developed chip code realizes the test function of electronic devices. The core chip content of the electronic board includes the reception and transmission of serial port data, the status judgment of input devices, and the drive of output devices; the core chip inside the external circuit connected to it includes the serial port data transmission, reception, and OLED display function of the SMA actually operating online; the external circuit of the test device realizes the internal mechanical function of the SMA, achieving the purpose of clearly presenting the working state of the module.

[0035] This technical solution belongs to a test device that can realize the control of the internal mechanical work of the SMA. In the actual production process, due to the complex structure of the SMA device and the imperfect self-check system, the fault phenomenon is not obvious; this test device solves the problem of the imperfect self-maintenance mode of the SMA; this device is composed of DSP, external circuit, serial communication, and OLED, realizing the independent debugging and operation of the circuit board, and no longer relying on the turnstile system itself.

[0036] The above are only the preferred examples of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A testing device for the single-trip ticket recycling circuit board of a subway station, characterized in that: It includes an SMA control board test bench (1), an SMA control board (2), a power supply module (3), a display module (4), a single-chip microcomputer (5), a first serial communication module (6), a digital circuit module (7), a test chip (10), an external circuit module (11), a second serial communication module (12), and a working device (13); the output end of the power supply module (3) is electrically connected to both the SMA control board test bench (1) and the SMA control board (2); the SMA control board test bench (1) is connected to the display module (4) through an IIC communication line; the SMA control board (2) includes a test chip (10) and an external circuit module (11); the test chip (10) is electrically connected and sends a control data signal to the external circuit module (11); the external circuit module (11) is provided with a second serial communication module (12) and a working device (13); the SMA control board test bench (1) includes a single-chip microcomputer (5), a first serial communication module (6), and a digital circuit module (7); the external circuit module (11) is electrically connected to the single-chip microcomputer (5); the second serial communication module (12) is communicatively connected to the first serial communication module (6); the digital circuit module (7) is electrically connected to the single-chip microcomputer (5) together; the working device (13) is connected to the digital circuit module (7) through a line and forms a control connection relationship; the display module (4) outputs data results for the signals of the single-chip microcomputer (5); the single-chip microcomputer (5) serves as the processing core unit for input signals and output signals; the second serial communication module (12) and the first serial communication module (6) realize data communication between the single-chip microcomputer (5) and the test chip (10).

2. The one-way ticket recycling circuit board testing device for subway stations according to claim 1, wherein: The display module (4) uses an OLED display screen.

3. The one-way ticket recycling circuit board testing device for subway stations according to claim 1, wherein: The test chip (10) uses a DSP test chip.

4. A test device for a one-way ticket recycling circuit board of a subway station according to claim 1, characterized in that: The second serial communication module (12) and the first serial communication module (6) are communicatively connected to each other using the (232) protocol.

5. The testing device for the single-trip ticket recycling circuit board of a subway station according to claim 1, wherein: The power supply voltage provided by the power supply module (3) to the SMA control board test bench (1) and the SMA control board (2) is (24) volts.

6. The one-way ticket recycling circuit board testing device for subway stations according to claim 1, characterized in that: The digital circuit module (7) is provided with an input signal module (8) and an output signal module (9); the input signal module (8) is used to receive the output level signal from the SMA control board; the output signal module (9) is used to send data instructions to the SMA control board (2), and the SMA control board (2) makes corresponding circuit level changes by identifying the electrical signal.

7. A one-way ticket recycling circuit board testing device for a subway station according to claim 1, characterized in that: The working device (13) includes a working motor, an electromagnet, and an infrared induction module: the digital circuit module (7) precisely controls the normal operation of the working motor, electromagnet, and infrared induction module through electrical signals.

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