A shielded gate slave unit testing device

Abstract

The utility model discloses a shielding door dependent unit testing arrangement relates to the shielding door field, and this shielding door dependent unit testing arrangement includes: voltage signal simulation module is used for simulating the direct current voltage signal transmission between dependent unit and PEDC, DCU, trackside equipment, relay control module is used for receiving analog voltage signal, and drive switch closes, signal output module is used for outputting direct current voltage signal after switch closing, compared with prior art, the beneficial effects of the utility model are: the utility model solves the dependent unit to go to the inconvenient of on -the -spot test (test needs to make an appointment in advance, and cannot carry out immediately after repair, and the dependent unit function normality is only known indirectly through the help of other auxiliary device and can only check the whole equipment operation without exception with special testing device direct display, and the dependent unit plug-in terminal is inconvenient to replace on the spot, and the time -consuming is longer), ends the history of dependent unit without special testing device, and fills the blank in the field.

Description

Technical Field

[0001] This utility model relates to the field of shielded doors, specifically a shielded door subordinate unit testing device. Background Technology

[0002] Please see Figure 1 The platform screen door system mainly consists of a Platform Controller Unit (PEDC), a Local Control Panel (PSL), a Door Control Unit (DCU), communication media and interfaces, and peripheral equipment. The slave unit is one of the core components of the safety loop in the platform screen door system. It is primarily responsible for collecting the closing and locking signals of the platform screen door and transmitting them to the PEDC and the signaling system. An error in this signal will affect the opening of train arrival and departure signals. Currently, this type of equipment is mainly found in Westinghouse brand platform screen door systems and is used in equipment on multiple railway lines in China.

[0003] In the absence of independent testing equipment, maintenance and testing after a failure of a subordinate unit of the platform screen door requires going to the main line platform screen door equipment site or the platform screen door system testing platform of the user unit to conduct functional tests for a certain duration and number of times in conjunction with PEDC, DCU and other peripheral equipment.

[0004] Its drawback is the lack of a dedicated testing device for direct display; it relies on other auxiliary devices to indirectly determine that the slave unit is functioning correctly by observing the operation of the entire equipment and confirming its normal operation. Therefore, improvements are needed. Thus, a new type of testing device for the slave unit of a shielded door is required to solve the aforementioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for a subordinate unit of a shielded door, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A test device for a shielded door slave unit, comprising: The voltage signal simulation module is used to simulate the DC voltage signals transmitted between the slave unit and the PEDC, DCU, and trackside equipment. The relay control module is used to drive the switch to close when it receives an analog voltage signal; The signal output module is used to output a DC voltage signal after the switch is closed; The main control conversion module is used to convert the input DC voltage signal (analog signal) into a digital signal output. Based on whether a digital signal is output, it determines whether a DC voltage signal is transmitted between the slave unit and the PEDC, DCU, and trackside equipment, and identifies the fault area. The voltage signal simulation module is connected to the relay control module and the main control conversion module. The relay control module is connected to the signal output module, and the signal output module is connected to the main control conversion module.

[0007] As a further embodiment of this utility model: the voltage signal simulation module includes an AC-to-DC simulation unit, which includes a rectifier BR1, a capacitor C1, and a capacitor C2. AC power is introduced into the first and third terminals of the rectifier BR1. The second terminal of the rectifier BR1 is connected to one end of the capacitor C1 and one end of the capacitor C2. The fourth terminal of the rectifier BR1 is connected to the other end of the capacitor C1 and the other end of the capacitor C2, forming a 70V DC power on the capacitor C1.

[0008] As a further embodiment of this utility model: the voltage signal simulation module includes a DC direct simulation unit, the DC direct simulation unit includes a DC power supply, and the DC power supply outputs 70V DC power.

[0009] As a further embodiment of this utility model: the relay control module includes a transistor Q1 and a relay RLY1. The base of transistor Q1 receives a control signal through a resistor R9. The collector of transistor Q1 is grounded. The emitter of transistor Q1 is connected to the first terminal of relay RLY1 and the positive terminal of diode D3. The fourth terminal of relay RLY1 is connected to the negative terminal of diode D3 and a 5V voltage. The second terminal of relay RLY1 receives a voltage. The fifth terminal of relay RLY1 is connected to a signal output module. The model of relay RLY1 is SRD-05VDC-SL-C.

[0010] As a further embodiment of this utility model: the signal output module includes resistors R3, R4, R5, and capacitor C4. One end of resistor R3 is connected to the relay control module, and the other end of resistor R3 is connected to one end of resistor R4. The other end of resistor R4 is connected to one end of resistor R5, one end of capacitor C4, and the main control conversion module. The other end of resistor R5 is grounded, and the other end of capacitor C4 is grounded.

[0011] As a further improvement of this utility model: the main control conversion module includes an STC8G1K08-38I microcontroller. The microcontroller's I / O port is connected to four signals, namely, the DC voltage signal output by the voltage signal analog module, the DC voltage signal output by the signal output module, the first closing and locking output signal, and the second closing and locking output signal. The first closing and locking output signal and the second closing and locking output signal are connection signals between the slave unit and the PEDC, DCU, and trackside equipment.

[0012] As a further improvement of this utility model, the shielding door slave unit testing device performs testing by directly inserting pins into the slave unit terminal block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model solves the inconvenience of testing slave units on-site (testing requires advance appointment and cannot be carried out immediately after repair; there is no dedicated testing device for intuitive display, and the slave unit can only be indirectly determined to be normal by checking the operation of the entire equipment with the help of other auxiliary devices; it is inconvenient and time-consuming to replace the plug terminals of the slave unit on-site), ends the history of slave units without dedicated testing devices, and fills the gap in this field. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a shielding door system in the prior art.

[0015] Figure 2 This is the circuit diagram for the AC-to-DC analog unit.

[0016] Figure 3 This is the circuit diagram for the relay control module.

[0017] Figure 4 This is the circuit diagram for the signal output module. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 2 , Figure 3 and Figure 4 A test device for a shielded door subordinate unit, comprising: The voltage signal simulation module is used to simulate the DC voltage signals transmitted between the slave unit and the PEDC, DCU, and trackside equipment. The relay control module is used to drive the switch to close when it receives an analog voltage signal; The signal output module is used to output a DC voltage signal after the switch is closed; The main control conversion module is used to convert the input DC voltage signal (analog signal) into a digital signal output. Based on whether a digital signal is output, it determines whether a DC voltage signal is transmitted between the slave unit and the PEDC, DCU, and trackside equipment, and identifies the fault area. The voltage signal simulation module is connected to the relay control module and the main control conversion module. The relay control module is connected to the signal output module, and the signal output module is connected to the main control conversion module.

[0020] In this embodiment: Please refer to Figure 2 The voltage signal simulation module includes an AC-to-DC conversion simulation unit, which includes a rectifier BR1, a capacitor C1, and a capacitor C2. AC power is introduced into the first and third terminals of the rectifier BR1. The second terminal of the rectifier BR1 is connected to one end of the capacitor C1 and one end of the capacitor C2. The fourth terminal of the rectifier BR1 is connected to the other end of the capacitor C1 and the other end of the capacitor C2, forming a 70V DC power on the capacitor C1.

[0021] The signals transmitted between the slave unit and the PEDC, DCU, and trackside equipment are all hard-wired connections and are DC 60V voltage signals. The signal transmission of peripheral equipment can be simplified to voltage signal simulation. The input AC voltage is rectified by rectifier BR1, filtered by capacitors C1 and C2, and then DC 70V is obtained at the upper end of capacitor C1.

[0022] In this embodiment: the voltage signal simulation module includes a DC direct simulation unit, the DC direct simulation unit includes a DC power supply, and the DC power supply outputs 70V DC power.

[0023] Alternatively, 70V DC power can be sampled directly to obtain the required 70V DC voltage. Setting 70V ensures that the voltage reaches 60V, which is sufficient to simulate the signals transmitted between the slave unit and PEDC, DCU, and trackside equipment.

[0024] In this embodiment: Please refer to Figure 3 The relay control module includes transistor Q1 and relay RLY1. The base of transistor Q1 receives the control signal through resistor R9. The collector of transistor Q1 is grounded. The emitter of transistor Q1 is connected to the first terminal of relay RLY1 and the positive terminal of diode D3. The fourth terminal of relay RLY1 is connected to the negative terminal of diode D3 and a 5V voltage. The second terminal of relay RLY1 receives the voltage. The fifth terminal of relay RLY1 is connected to the signal output module. The model of relay RLY1 is SRD-05VDC-SL-C.

[0025] Some analog signal inputs utilize existing DC voltage signals, multiplexed and switched via relay contacts. The timing is controlled by a high-level output from a microcontroller pin, triggering the signal under specific conditions. For example... Figure 3 The control signal changes the base voltage of transistor Q1 to control whether transistor Q1 is turned on or off. When transistor Q1 is turned on, a voltage difference is formed between the first and fourth terminals of relay RLY1, which controls the connection between the second and fifth terminals of relay RLY1. The 70V voltage at the second terminal is output to the signal output module through the fifth terminal.

[0026] In this embodiment: Please refer to Figure 4The signal output module includes resistors R3, R4, R5, and capacitor C4. One end of resistor R3 is connected to the relay control module, and the other end of resistor R3 is connected to one end of resistor R4. The other end of resistor R4 is connected to one end of resistor R5, one end of capacitor C4, and the main control conversion module. The other end of resistor R5 is grounded, and the other end of capacitor C4 is grounded.

[0027] Simulates 60V voltage output, meaning that when a voltage is input, there is a voltage at the common point ADC0, which is fed back to the main control conversion module to confirm that there is a voltage output.

[0028] In this embodiment: the main control conversion module includes an STC8G1K08-38I microcontroller. The microcontroller's I / O port is connected to four signals, namely, the DC voltage signal output by the voltage signal analog module (DC70V input voltage), the DC voltage signal output by the signal output module (DC60V output voltage), the first closing and locking output signal, and the second closing and locking output signal. The first closing and locking output signal and the second closing and locking output signal are connection signals between the slave unit and the PEDC, DCU, and trackside equipment.

[0029] The first closing and locking signal is transmitted back to the signaling system. The signaling system displays that the door is closed normally and records the time when the signal was received. Only then can the train move and leave the station. The second closing and locking signal is transmitted back to the PEDC. When the platform screen door system receives the closing and locking signal, the internal software of the platform screen door system will set the normal closing flag and record the time when the signal was received, displaying that the door closing was executed normally.

[0030] The first and second shutdown lockout output signals ensure signal transmission between the slave unit and PEDC, DCU, and trackside equipment. The voltage signal simulation module outputs a DC voltage signal to simulate the transmission signal, and the signal output module outputs a DC voltage signal to observe whether a signal is output. When all four signals are normal, it indicates that this part of the slave unit is normal. The STC8G1K08-38I microcontroller (TSSOP20 package) has 10 built-in ADC sampling and conversion outputs, and only four ADCs are needed here to meet the requirements.

[0031] The specific process involves using a single-chip microcomputer STC8G1K08-38I-TSSOP20 as the main controller, with a low-level button for reset. The test cycle, number of tests, and test duration are set in the program as needed to achieve automatic testing and improve testing efficiency.

[0032] During the test, the detection results and status are output in real time. Six groups of indicator lights are arranged on the test device to respectively indicate that the test of DC70V input voltage, DC60V output voltage, the first closing locking voltage signal and the second closing locking voltage signal is in progress, and the test result. If the detection of DC70V input voltage, DC60V output voltage, the first closing locking voltage signal and the second closing locking voltage signal (in one or multiple tests) are all normal, the output result is qualified. To make a distinction, the test result output indicator light uses a high-brightness blue LED bead. Other indicator lights use high-brightness red LED beads.

[0033] In this embodiment: the shield door slave unit testing device performs testing by directly inserting pins into the terminal block of the slave unit.

[0034] The testing device adopts pins to be directly inserted into the terminal block of the slave unit for testing, which saves the testing time affected by terminal replacement and improves testing efficiency. Considering that the testing of the slave unit requires frequent plugging and unplugging, the pins adopt probes with good strength and material. The pointed tip is easy to insert into the testing terminal, can be used repeatedly for many times and is not easy to be damaged. To enhance the stability of the board and pins during testing, double-layer firm welding is adopted, with copper columns for auxiliary reinforcement.

[0035] Considering that the original terminal of the slave unit is a 12-position PCB terminal block of WAGO with model 236-412, the testing device needs to be tilted at a certain angle when the pins of the terminal block are inserted. To enhance the stability of the testing device, the upper end of the testing device can be lapped on the edge of the insulating shell of Henschel relay RL3 / RL6 to achieve stability.

[0036] The working principle of the present utility model is: the voltage signal simulation module is used to simulate the DC voltage signal transmitted between the slave unit and PEDC, DCU, and trackside equipment; the relay control module is used to drive the switch to close when receiving the analog voltage signal; the signal output module is used to output the DC voltage signal after the switch is closed; the main control conversion module is used to convert the input DC voltage signal (analog signal) into a digital signal for output, and judge whether the DC voltage signal is transmitted between the slave unit and PEDC, DCU, and trackside equipment according to whether the digital signal is output, so as to determine the fault area.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A testing device for subordinate units of a shielded door, characterized in that, The test device for the subordinate unit of the shielding door includes: The voltage signal simulation module is used to simulate the DC voltage signals transmitted between the slave unit and the PEDC, DCU, and trackside equipment. The relay control module is used to drive the switch to close when it receives an analog voltage signal; The signal output module is used to output a DC voltage signal after the switch is closed; The main control conversion module is used to convert the input DC voltage signal into a digital signal output. Based on whether a digital signal is output, it determines whether a DC voltage signal is transmitted between the slave unit and the PEDC, DCU, and trackside equipment, and identifies the fault area. The voltage signal simulation module is connected to the relay control module and the main control conversion module. The relay control module is connected to the signal output module, and the signal output module is connected to the main control conversion module.

2. The shielding door subordinate unit testing device according to claim 1, characterized in that, The voltage signal simulation module includes an AC-to-DC simulation unit, which includes a rectifier BR1, a capacitor C1, and a capacitor C2. AC power is introduced into the first and third terminals of the rectifier BR1. The second terminal of the rectifier BR1 is connected to one end of the capacitor C1 and one end of the capacitor C2. The fourth terminal of the rectifier BR1 is connected to the other end of the capacitor C1 and the other end of the capacitor C2, forming a 70V DC power on the capacitor C1.

3. The shielding door subordinate unit testing device according to claim 2, characterized in that, The voltage signal simulation module also includes a DC direct simulation unit, which includes a DC power supply for outputting 70V DC power.

4. The shielding door subordinate unit testing device according to claim 1, characterized in that, The relay control module includes a transistor Q1 and a relay RLY1. The base of transistor Q1 receives a control signal through resistor R9. The collector of transistor Q1 is grounded. The emitter of transistor Q1 is connected to the first terminal of relay RLY1 and the positive terminal of diode D3. The fourth terminal of relay RLY1 is connected to the negative terminal of diode D3 and a 5V voltage. The second terminal of relay RLY1 receives a voltage. The fifth terminal of relay RLY1 is connected to a signal output module. The model of relay RLY1 is SRD-05VDC-SL-C.

5. The shielding door subordinate unit testing device according to claim 1, characterized in that, The signal output module includes resistors R3, R4, and R5, and capacitor C4. One end of resistor R3 is connected to the relay control module, and the other end of resistor R3 is connected to one end of resistor R4. The other end of resistor R4 is connected to one end of resistor R5, one end of capacitor C4, and the main control conversion module. The other end of resistor R5 is grounded, and the other end of capacitor C4 is grounded.

6. The shielding door subordinate unit testing device according to claim 1, characterized in that, The main control conversion module includes an STC8G1K08-38I microcontroller. The I / O port of the STC8G1K08-38I microcontroller is connected to four signals: a DC voltage signal output by the voltage signal analog module, a DC voltage signal output by the signal output module, a first shutdown lockout output signal, and a second shutdown lockout output signal. The first shutdown lockout output signal and the second shutdown lockout output signal are connection signals between the slave unit and the PEDC, DCU, and trackside equipment.

7. The shielding door subordinate unit testing device according to any one of claims 1-6, characterized in that, The shielding door slave unit testing device performs testing by directly inserting pins into the slave unit terminal block.

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