Testing device for train RF inquiry transponder
By designing a test device for train RF query transponders, utilizing RF enable switches and indicator lights to monitor status, and combining this with an oscilloscope to detect waveforms, the problem of offline testing of train RF query transponders was solved, thereby improving the safety and reliability of train operation.
Patent Information
- Application Number
- CN202423315722.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing technology cannot detect and test anomalies in onboard RF query transponders during train operation, making it impossible to simulate the train operating environment for testing after replacement.
A test device for train RF query transponders was designed, including an RF enable switch, indicator lights, and oscilloscope test points. By controlling the RF enable switch and monitoring the status of the indicator lights, and combining the waveform quality detection with the oscilloscope, offline testing can be achieved.
This technology enables offline status monitoring and waveform quality testing of train RF query transponders, improving the safety and reliability of train operation and reducing operating costs.
Smart Images
Figure CN223796946U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail transit testing technology, and in particular to a testing device for a train RF query transponder. Background Technology
[0002] The RF query transponder for rail transit trains is a high-speed point-to-point data transmission device based on the principle of electromagnetic induction. It is a key component of automatic train operation (ATP / ATO) and is used to realize data exchange between the ground and the train at specific locations. It provides the train with various point-to-point information required for automatic train operation (ATP / ATO), including route length, turnout length, block section length, gradient, curve, etc., to ensure the safety of the train in high-speed operation.
[0003] During actual train operation, malfunctions of the onboard RF query transponder often occur. After replacing the malfunctioning RF query transponder, it becomes impossible to simulate the train's operating environment and conduct train RF tag reading tests offline.
[0004] How to conduct offline testing of train RF query transponders has become a technical problem that needs to be solved. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a test device for train RF query transponders.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] According to one aspect of the present invention, a testing device for a train RF interrogation transponder is provided, the RF interrogation transponder including an RF generator module, a main power supply module, and an RF antenna, the device comprising:
[0008] An RF enable switch used to control the operation of the RF generator module;
[0009] RF tag indicator light used to detect and read the status of the RF tag inside the RF antenna;
[0010] Main power indicator light used to detect the working status of the main power module;
[0011] RF generator indicator lights used to detect the operating status of the RF generator module;
[0012] And interface P1 for connecting to the RF query responder.
[0013] Preferably, the device further includes test points for connecting to the oscilloscope, wherein the test points include at least one channel test point and a ground test point.
[0014] More preferably, there are three channel test points, and the three channel test points share a single grounding test point.
[0015] Preferably, the RF query responder includes an AUX interface and is connected to interface P1 via the AUX interface.
[0016] More preferably, the number of pins of interface P1 and AUX interface are equal, and they are connected one-to-one in sequence.
[0017] Preferably, the RF enable switch is connected to pin 1 of interface P1.
[0018] Preferably, the main power indicator light is connected to pin 2 of interface P1.
[0019] Preferably, the RF tag indicator light is connected to pin 3 of interface P1.
[0020] Preferably, one end of the RF enable switch is connected to pin 13 of interface P1, and the other end is connected to pin 14 of interface P1.
[0021] More preferably, the three channel test points are connected to pins 9, 11 and 13 of interface P1, respectively, and the ground test point is connected to pin 12 of interface P1.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1) The testing device of this utility model includes three indicator lights and an RF enable switch. By controlling the RF enable switch, the status of the RF query transponder is controlled and monitored, thereby realizing the offline testing of the RF query transponder. The device has a simple structure, low cost, and is easy to operate.
[0024] 2) The device of this utility model is also provided with a test point connected to an oscilloscope, which is used to detect the output waveform quality when the RF query transponder is working, ensuring the quality of the RF query transponder after it is put into operation, thereby improving the safe operation of rail transit trains. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the AUX interface of the RF query transponder in this utility model;
[0026] Figure 2 This is a schematic diagram of the control board circuit of the RF query transponder in this utility model;
[0027] Figure 3 This is a schematic diagram of the working principle of the control board of the RF query transponder in this utility model. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.
[0029] This embodiment relates to a test apparatus for a train RF query transponder, used for offline testing of the train RF query transponder. The RF query transponder includes a main power module, an RF generator module, and an RF antenna.
[0030] Design a test setup for offline verification of the AI1422 RF query responder, such as... Figure 2 It consists of the following parts:
[0031] RF enable switch ( Figure 2 The RF Enable switch is a toggle switch used to control the operation of the RF generator module. When the switch is closed, the RF generator module starts working; when the switch is open, the RF generator module stops working.
[0032] RF tag indicator light ( Figure 2 The LOCK LED (green light) is used to detect the status of the RF tag inside the RF antenna. The green light illuminates when an RF tag is present in the RF antenna; otherwise, it is off when no RF tag is present.
[0033] Main power indicator light ( Figure 2 The main LED (red) is used to detect the operating status of the main power module. When the RF interrogator is powered on, the red LED lights up when the main power module is working normally; otherwise, the red LED turns off when the main power module is malfunctioning.
[0034] RF generator indicator light ( Figure 2 The RF Power LED (yellow) is an indicator light used to detect the operating status of the RF generator module. When the RF Enable switch is closed, the yellow light illuminates if the RF generator module is working properly; otherwise, the yellow light turns off if the RF generator module is malfunctioning.
[0035] An oscilloscope is connected between the channel test points (CHA+ / CHB+ / CHC+) and the ground test point (GND test point) to test the output waveform quality of the RF query transponder during operation. When the RF query transponder is working normally, the RF generator outputs a sine wave, which is correspondingly detected on the oscilloscope.
[0036] During offline testing, the testing device is connected to the AUX interface of the RF query transponder AI1422 via interface P1 (e.g., Figure 1 The 16 pins of interface P1 and the 16 pins of the AUX interface correspond one-to-one in sequence, that is, the i-th pin of interface P1 is connected to the i-th pin of the AUX interface, i = 1 to 16.
[0037] The status of the RF query transponder (e.g., [status]) is controlled and monitored through multiple indicator lights and the RF enable switch of the test device. Figure 3 ).
[0038] After the test equipment and the RF query transponder are connected, and the RF query transponder is powered on, the process proceeds in three stages:
[0039] Initial state: The green indicator light of the RF tag is off, the main power indicator light is red, the yellow indicator light of the RF generator is off, and the oscilloscope shows no waveform output.
[0040] When the RF enable switch is closed: the green indicator light on the RF tag goes out, the main power indicator light turns red, the RF generator indicator light turns yellow, and the oscilloscope monitors the output sine wave.
[0041] When the RF enable switch is closed and the RF antenna reads the RF tag: the RF tag indicator light is green, the main power indicator light is red, the RF generator indicator light is yellow, and the oscilloscope monitors the output sine wave.
[0042] The above three states are normal; all other states are abnormal. For example: After the RF interrogator is powered on, if the red main power indicator light is off, it indicates a problem with the main power module. After the RF enable switch is closed, if the main power indicator light is red and the yellow RF generator indicator light is off, it indicates a problem with the RF generator module. If the RF enable switch is closed and the RF antenna is reading the RF tag: the green RF tag indicator light is off, the main power indicator light is red, and the RF generator indicator light is yellow, it indicates a problem with the RF antenna reading the RF tag, or that there is no RF tag in the RF antenna. If the waveform monitored by the oscilloscope is not a sine wave, it indicates that the RF interrogator's performance is abnormal and needs to be investigated.
[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A testing device for a train RF interrogator transponder, said RF interrogator transponder comprising an RF generator module, a main power supply module and an RF antenna, characterized in that, The device comprises: an RF enable switch for controlling the operation of the RF generator module; an RF tag indicator for detecting the state of the RF tag in the reading RF antenna; a main power supply indicator for detecting the operation state of the main power supply module; an RF generator indicator for detecting the operation state of the RF generator module; and an interface P1 for connecting the RF transponder.
2. A test apparatus for a train RF interrogator transponder as claimed in claim 1, characterised in that, The device further comprises test points for connecting to an oscilloscope, wherein the test points comprise at least one channel test point and a ground test point.
3. A test apparatus for a train RF interrogator transponder as claimed in claim 2, characterised in that, The channel test points are three, and the three channel test points share one ground test point.
4. The test apparatus for a train RF interrogator transponder of claim 1, wherein, The RF transponder comprises an AUX interface, which is connected to the interface P1.
5. A test apparatus for a train RF interrogator transponder as claimed in claim 4, characterised in that, The interface P1 and the AUX interface have the same number of pins, and are connected in one-to-one correspondence according to the order.
6. The test apparatus for a train RF interrogator transponder of claim 1, wherein, The RF enable switch is connected to the first pin of the interface P1.
7. The test apparatus for a train RF interrogator transponder of claim 1, wherein, The main power supply indicator is connected to the second pin of the interface P1.
8. The test apparatus for a train RF interrogator transponder of claim 1, wherein, The RF tag indicator is connected to the third pin of the interface P1.
9. The test apparatus for a train RF interrogator transponder of claim 1, wherein, One end of the RF enable switch is connected to the thirteenth pin of the interface P1, and the other end is connected to the fourteenth pin of the interface P1.
10. The test apparatus for a train RF interrogator transponder of claim 3, wherein, The three channel test points are respectively connected to the ninth, eleventh and thirteenth pins of the interface P1, and the ground test point is connected to the twelfth pin of the interface P1.