Rail transit vehicle axle temperature sensor safety protection type detection device

Abstract

The utility model relates to a kind of rail transit vehicle axle temperature sensor safety protection type detection device, to solve the long cycle of the technical problem of the safety hazard of big of the rail transit vehicle maintenance in prior art.The device includes: detection host computer, safety protection module, man-machine interaction unit.The rail transit vehicle axle temperature sensor safety protection type detection device of the utility model, by specific multichannel parallel detection circuit, safety protection structure and man-machine interaction structure, realizes rapid batch detection, reduces the risk of electric shock, simplifies operation process, reduces false touch damage.

Description

Technical Field

[0001] This utility model relates to the field of rail transit vehicle maintenance technology, and in particular to a safety protection detection device for axle temperature sensors of rail transit vehicles. Background Technology

[0002] In the five-level maintenance of rail transit vehicles (such as CRH380B / BG / BL EMUs), the maintenance of axle temperature sensors is one of the core aspects. In existing technologies, axle temperature sensors often experience problems such as over-temperature alarms and inability to display temperature data due to aging, poor contact, or circuit faults, requiring frequent disassembly and maintenance. Traditional detection methods have the following drawbacks:

[0003] High reliance on manual labor: It relies on operators to troubleshoot faults one by one, which is time-consuming and inefficient.

[0004] Significant safety hazards exist: exposed cables during testing pose a risk of electric shock, and there is a lack of emergency power-off mechanisms.

[0005] Limited functionality: Existing equipment can only perform basic continuity tests and cannot dynamically monitor insulation performance or provide real-time warnings;

[0006] High risk of accidental contact: Repeated plugging and unplugging operations can easily lead to equipment damage or human error.

[0007] Due to the aforementioned problems, existing technologies lead to extended maintenance cycles and increased maintenance costs for rail transit vehicles, as well as serious safety hazards. There is an urgent need for a dedicated device that integrates safety protection and intelligent detection functions. Utility Model Content

[0008] This invention aims to solve the technical problems of long maintenance cycles and significant safety hazards in existing rail transit vehicle maintenance, and provides a safety-protected detection device for axle temperature sensors in rail transit vehicles.

[0009] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0010] A safety protection detection device for axle temperature sensors in rail transit vehicles includes interconnected components: a detection host, a safety protection module, and a human-machine interface unit.

[0011] The testing host includes: a multi-channel test interface, a diagnostic module, and an insulation withstand voltage test unit. The multi-channel test interface has 32 independent test channels, supporting simultaneous access of multiple sensors. The diagnostic module includes a temperature simulation circuit with a built-in adjustable high-precision constant current / constant voltage source and a precision resistor network to provide excitation signals simulating temperature conditions to the sensors. The insulation withstand voltage test unit includes a built-in high-voltage generation circuit, a leakage current detection and comparison circuit, and an integrated low-resistance measurement bridge or four-wire measurement circuit. The insulation withstand voltage test unit indicates the continuity result; each test channel corresponds to an independent status indicator light group, with red and green lights indicating pass / fail, respectively.

[0012] The safety protection module includes: a 360° rotating warning light, an audible and visual alarm, an emergency power-off device, a dual-relay interlocking relay, a cable interface, and a flame-retardant ABS plastic protective shell. The 360° rotating warning light is located on the top and is linked to the high-voltage output circuit of the insulation withstand voltage test unit. The audible and visual alarm includes a buzzer and indicator light, and is directly driven by the corresponding fault signal line to issue an alarm. The emergency power-off device is an emergency stop button located on the side, used to cut off the main power supply to the device. The dual-relay interlocking relay is used to control power outages. The cable interface is a concealed slot. The flame-retardant ABS plastic protective shell is fireproof.

[0013] The human-machine interface unit has: a touch screen, a one-button operation interface, and a data export function; wherein: the touch screen of the human-machine interface unit is equipped with a one-button operation interface; the human-machine interface unit has a data export function, and uses an independent group of status indicator lights for each detection channel.

[0014] In the above technical solution, the measurement range of the diagnostic module is -50℃ to 200℃.

[0015] In the above technical solution, the measurement range of the diagnostic module is -100℃ to 100℃.

[0016] In the above technical solution, the measurement range of the diagnostic module is -30℃ to 300℃.

[0017] In the above technical solution, the measurement accuracy of the diagnostic module is ±1℃.

[0018] In the above technical solution, the measurement accuracy of the diagnostic module is ±0.1℃.

[0019] In the above technical solution, the measurement accuracy of the diagnostic module is ±0.5℃.

[0020] In the above technical solution, the touch screen of the human-machine interface unit is equipped with a one-button operation interface, including: a main power switch, a test start button, an insulation withstand voltage test start button, a channel selection switch, and a mode selection switch.

[0021] In the above technical solution, a large insulation resistance meter and a temperature analog signal indicator are set in the center of the touch screen of the human-machine interaction unit.

[0022] In the above technical solution, the indicator light in the audible and visual alarm is a red indicator light.

[0023] This utility model has the following beneficial effects:

[0024] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, which has high detection efficiency: it adopts a 32-channel independent parallel detection circuit structure, which can simultaneously connect multiple sensors and significantly shorten the batch detection time through hardware parallel processing.

[0025] This utility model discloses a safety protection detection device for axle temperature sensors in rail transit vehicles, which provides comprehensive safety assurance: the unique hidden interface and protective cover structure effectively prevent exposed cables and electric shock; the direct hard connection design between the emergency stop button and the dual relay interlock circuit ensures rapid and reliable power-off; the hardware linkage design between the warning light and the high-voltage circuit provides intuitive dynamic warnings; and the flame-retardant shell enhances fire safety.

[0026] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, which has a high degree of functional integration: within a single device, through a specific circuit board layout and connection, hardware units such as a temperature simulation excitation source, an insulation withstand voltage generator / detector, and a low-resistance measurement bridge are integrated to meet comprehensive detection needs.

[0027] This utility model provides a safety protection detection device for axle temperature sensors in rail transit vehicles. It is simple and reliable to operate: the optimized interface structure (such as locking connectors) reduces the number of insertions and removals and the force required, thus reducing the risk of damage and accidental activation; the human-machine interaction design of physical switches, buttons and indicator lights is intuitive and easy to use, reducing operational errors.

[0028] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles. It has a robust and durable structure: the industrial-grade flame-retardant ABS shell and internal circuit protection design extend the service life of the equipment.

[0029] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, which features high structural integration, safe and convenient operation, and complete detection functions.

[0030] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles. Through a specific multi-channel parallel detection circuit, safety protection structure, and human-machine interaction structure, it achieves rapid batch detection, reduces the risk of electric shock, simplifies the operation process, and reduces damage from accidental contact. Attached Figure Description

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic diagram of the overall structure of the safety protection detection device for axle temperature sensors in rail transit vehicles according to this utility model. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, such as... Figure 1 As shown, it includes interconnected components: a detection host, a security protection module, and a human-machine interface unit;

[0037] Specifically:

[0038] 1. Testing host;

[0039] The testing unit includes: a multi-channel test interface, a diagnostic module, and an insulation withstand voltage test unit; among which:

[0040] The multi-channel test interface is configured with 32 independent detection channels, supporting simultaneous access of batch sensors;

[0041] The diagnostic module is equipped with a high-precision temperature simulation circuit, which has a built-in adjustable high-precision constant current source / constant voltage source and a precision resistor network to provide excitation signals for simulating temperature conditions to the sensor; the measurement range is -50℃ to 200℃, and the measurement accuracy is ±1℃.

[0042] The insulation withstand voltage test unit has a built-in DC 500V high voltage generating circuit and leakage current detection and comparison circuit, with a set threshold of ≤1mA. The test content of the insulation withstand voltage test unit is a continuity test. The insulation withstand voltage test unit also includes an integrated low resistance measurement bridge or a four-wire measurement circuit. After the test is completed, the insulation withstand voltage test unit will give a result indication. Each test channel corresponds to an independent status indicator light group, with red and green lights indicating pass / fail respectively.

[0043] 2. Safety protection module;

[0044] The safety protection module includes: a 360° rotating warning light, an audible and visual alarm, an emergency power-off device, a dual-relay interlocking relay, a cable interface, and a flame-retardant ABS plastic protective shell; among which:

[0045] A 360° rotating warning light is installed on the top. This 360° rotating warning light is linked to the high voltage output circuit of the insulation withstand voltage test unit. When the high voltage is output, the 360° rotating warning light is controlled to flash by the drive circuit.

[0046] The audible and visual alarm is equipped with a buzzer and a red indicator light. When the comparator of the insulation withstand voltage test unit outputs an over-limit signal (leakage current > 1mA) or the temperature simulation signal exceeds the preset range (judged by a hardware threshold comparator), the corresponding fault signal line directly drives the audible and visual alarm to issue a continuous alarm (buzzer + constant red light).

[0047] The emergency power cut-off device is a mushroom-shaped emergency stop button located on the side. When pressed, it cuts off the main power supply to the device instantaneously (<0.1 seconds) through mechanical linkage or direct control of the main power relay coil circuit.

[0048] Dual-relay interlocking relays are used to ensure reliable power outage response;

[0049] The cable interface is a concealed slot to avoid exposed contact;

[0050] The flame-retardant ABS plastic protective shell meets the IP54 protection rating and is used for fire protection.

[0051] 3. Human-machine interface unit;

[0052] The human-machine interface unit features: a touchscreen display, a one-button operation interface, and data export functionality; among which:

[0053] The touch screen of the human-machine interface unit is equipped with a one-button operation interface, including: main power switch, test start button, insulation withstand voltage test start button (optional), channel selection switch (for selecting a single channel during retesting), and mode selection switch (temperature simulation / insulation withstand voltage / conduction); a large insulation resistance meter and a temperature simulation signal indicator are located in the center of the touch screen.

[0054] The human-machine interface unit has a data export function and uses an independent group of status indicator lights (LEDs) for each detection channel.

[0055] The working process of the safety protection detection device for axle temperature sensors in rail transit vehicles of this utility model is as follows:

[0056] First, connect the sensor under test to the corresponding channel of the multi-channel test interface and close the protective cover.

[0057] Then, select the detection mode using the mode selection switch on the one-touch operation interface of the touch screen, and press the test start button.

[0058] Then, the internal circuitry of the device adjusts according to the switch status and button signals:

[0059] If "Full Test" is selected, the internal timing control circuit or interlocking circuit will be activated in sequence: temperature simulation circuit output -> (delay / completion judgment) -> continuity test circuit operation -> (completion judgment) -> insulation withstand voltage test circuit operation (simultaneously triggering the warning light to flash);

[0060] If you select a single test, only the corresponding circuit will be activated.

[0061] Then, the status indicator lights of each detection channel of the multi-channel test interface finally display the detection result (pass / fail).

[0062] Finally, in an emergency, press the emergency stop button on the one-touch operation interface of the touch screen. This will directly cut off the main power relay through its mechanical and electrical connection, thus shutting off the system power.

[0063] Example 2

[0064] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, comprising interconnected components: a detection host, a safety protection module, and a human-machine interface unit.

[0065] Specifically:

[0066] 1. Testing host;

[0067] The testing unit includes: a multi-channel test interface, a diagnostic module, and an insulation withstand voltage test unit; among which:

[0068] The multi-channel test interface is configured with 32 independent detection channels, supporting simultaneous access of batch sensors;

[0069] The diagnostic module is equipped with a high-precision temperature simulation circuit, which has a built-in adjustable high-precision constant current source / constant voltage source and a precision resistor network to provide excitation signals for simulating temperature conditions to the sensor; the measurement range is -100℃ to 100℃, and the measurement accuracy is ±0.1℃.

[0070] The insulation withstand voltage test unit has a built-in DC 500V high voltage generating circuit and leakage current detection and comparison circuit, with a set threshold of ≤1mA. The test content of the insulation withstand voltage test unit is a continuity test. The insulation withstand voltage test unit also includes an integrated low resistance measurement bridge or a four-wire measurement circuit. After the test is completed, the insulation withstand voltage test unit will give a result indication. Each test channel corresponds to an independent status indicator light group, with red and green lights indicating pass / fail respectively.

[0071] 2. Safety protection module;

[0072] The safety protection module includes: a 360° rotating warning light, an audible and visual alarm, an emergency power-off device, a dual-relay interlocking relay, a cable interface, and a flame-retardant ABS plastic protective shell; among which:

[0073] A 360° rotating warning light is installed on the top. This 360° rotating warning light is linked to the high voltage output circuit of the insulation withstand voltage test unit. When the high voltage is output, the 360° rotating warning light is controlled to flash by the drive circuit.

[0074] The audible and visual alarm is equipped with a buzzer and a red indicator light. When the comparator of the insulation withstand voltage test unit outputs an over-limit signal (leakage current > 1mA) or the temperature simulation signal exceeds the preset range (judged by a hardware threshold comparator), the corresponding fault signal line directly drives the audible and visual alarm to issue a continuous alarm (buzzer + constant red light).

[0075] The emergency power cut-off device is a mushroom-shaped emergency stop button located on the side. When pressed, it cuts off the main power supply to the device instantaneously (<0.1 seconds) through mechanical linkage or direct control of the main power relay coil circuit.

[0076] Dual-relay interlocking relays are used to ensure reliable power outage response;

[0077] The cable interface is a concealed slot to avoid exposed contact;

[0078] The flame-retardant ABS plastic protective shell meets the IP54 protection rating and is used for fire protection.

[0079] 3. Human-machine interface unit;

[0080] The human-machine interface unit features: a touchscreen display, a one-button operation interface, and data export functionality; among which:

[0081] The touch screen of the human-machine interface unit is equipped with a one-button operation interface, including: main power switch, test start button, insulation withstand voltage test start button (optional), channel selection switch (for selecting a single channel during retesting), and mode selection switch (temperature simulation / insulation withstand voltage / conduction); a large insulation resistance meter and a temperature simulation signal indicator are located in the center of the touch screen.

[0082] The human-machine interface unit has a data export function and uses an independent group of status indicator lights (LEDs) for each detection channel.

[0083] The working process of the safety protection detection device for axle temperature sensors of rail transit vehicles of this utility model is the same as that of Embodiment 1, so it will not be described again here.

[0084] Example 3

[0085] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, comprising interconnected components: a detection host, a safety protection module, and a human-machine interface unit.

[0086] Specifically:

[0087] 1. Testing host;

[0088] The testing unit includes: a multi-channel test interface, a diagnostic module, and an insulation withstand voltage test unit; among which:

[0089] The multi-channel test interface is configured with 32 independent detection channels, supporting simultaneous access of batch sensors;

[0090] The diagnostic module is equipped with a high-precision temperature simulation circuit, which has a built-in adjustable high-precision constant current / constant voltage source and a precision resistor network to provide excitation signals for simulating temperature conditions to the sensor; the measurement range is -30℃ to 300℃, and the measurement accuracy is ±0.5℃.

[0091] The insulation withstand voltage test unit has a built-in DC 500V high voltage generating circuit and leakage current detection and comparison circuit, with a set threshold of ≤1mA. The test content of the insulation withstand voltage test unit is a continuity test. The insulation withstand voltage test unit also includes an integrated low resistance measurement bridge or a four-wire measurement circuit. After the test is completed, the insulation withstand voltage test unit will give a result indication. Each test channel corresponds to an independent status indicator light group, with red and green lights indicating pass / fail respectively.

[0092] 2. Safety protection module;

[0093] The safety protection module includes: a 360° rotating warning light, an audible and visual alarm, an emergency power-off device, a dual-relay interlocking relay, a cable interface, and a flame-retardant ABS plastic protective shell; among which:

[0094] A 360° rotating warning light is installed on the top. This 360° rotating warning light is linked to the high voltage output circuit of the insulation withstand voltage test unit. When the high voltage is output, the 360° rotating warning light is controlled to flash by the drive circuit.

[0095] The audible and visual alarm is equipped with a buzzer and a red indicator light. When the comparator of the insulation withstand voltage test unit outputs an over-limit signal (leakage current > 1mA) or the temperature simulation signal exceeds the preset range (judged by a hardware threshold comparator), the corresponding fault signal line directly drives the audible and visual alarm to issue a continuous alarm (buzzer + constant red light).

[0096] The emergency power cut-off device is a mushroom-shaped emergency stop button located on the side. When pressed, it cuts off the main power supply to the device instantaneously (<0.1 seconds) through mechanical linkage or direct control of the main power relay coil circuit.

[0097] Dual-relay interlocking relays are used to ensure reliable power outage response;

[0098] The cable interface is a concealed slot to avoid exposed contact;

[0099] The flame-retardant ABS plastic protective shell meets the IP54 protection rating and is used for fire protection.

[0100] 3. Human-machine interface unit;

[0101] The human-machine interface unit features: a touchscreen display, a one-button operation interface, and data export functionality; among which:

[0102] The touch screen of the human-machine interface unit is equipped with a one-button operation interface, including: main power switch, test start button, insulation withstand voltage test start button (optional), channel selection switch (for selecting a single channel during retesting), and mode selection switch (temperature simulation / insulation withstand voltage / conduction); a large insulation resistance meter and a temperature simulation signal indicator are located in the center of the touch screen.

[0103] The human-machine interface unit has a data export function and uses an independent group of status indicator lights (LEDs) for each detection channel.

[0104] The working process of the safety protection detection device for axle temperature sensors of rail transit vehicles of this utility model is the same as that of Embodiment 1, so it will not be described again here.

[0105] In the above specific implementation, the measurement range and measurement accuracy of the diagnostic module are different, and can be flexibly selected according to different application environments, so they will not be described in detail here.

[0106] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles, which features high structural integration, safe and convenient operation, and complete detection functions.

[0107] This utility model relates to a safety protection detection device for axle temperature sensors in rail transit vehicles. Through a specific multi-channel parallel detection circuit, safety protection structure, and human-machine interaction structure, it achieves rapid batch detection, reduces the risk of electric shock, simplifies the operation process, and reduces damage from accidental contact.

[0108] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A safety protection detection device for axle temperature sensors in rail transit vehicles, characterized in that, This includes interconnected components: a detection host, a security protection module, and a human-machine interface unit; The testing host includes: a multi-channel test interface, a diagnostic module, and an insulation withstand voltage test unit. The multi-channel test interface has 32 independent test channels, supporting simultaneous access of multiple sensors. The diagnostic module includes a temperature simulation circuit with a built-in adjustable high-precision constant current / constant voltage source and a precision resistor network to provide excitation signals simulating temperature conditions to the sensors. The insulation withstand voltage test unit includes a built-in high-voltage generation circuit, a leakage current detection and comparison circuit, and an integrated low-resistance measurement bridge or four-wire measurement circuit. The insulation withstand voltage test unit indicates the continuity result; each test channel corresponds to an independent status indicator light group, with red and green lights indicating pass / fail, respectively. The safety protection module includes: a 360° rotating warning light, an audible and visual alarm, an emergency power-off device, a dual-relay interlocking relay, a cable interface, and a flame-retardant ABS plastic protective shell. The 360° rotating warning light is located on the top and is linked to the high-voltage output circuit of the insulation withstand voltage test unit. The audible and visual alarm includes a buzzer and indicator light, and is directly driven by the corresponding fault signal line to issue an alarm. The emergency power-off device is an emergency stop button located on the side, used to cut off the main power supply to the device. The dual-relay interlocking relay is used to control power outages. The cable interface is a concealed slot. The flame-retardant ABS plastic protective shell is fireproof. The human-machine interface unit has: a touch screen, a one-button operation interface, and a data export function; wherein: the touch screen of the human-machine interface unit is equipped with a one-button operation interface; the human-machine interface unit has a data export function, and uses an independent group of status indicator lights for each detection channel.

2. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The diagnostic module has a measurement range of -50℃ to 200℃.

3. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The diagnostic module has a measurement range of -100℃ to 100℃.

4. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The diagnostic module has a measurement range of -30℃ to 300℃.

5. The safety protection detection device for axle temperature sensors in rail transit vehicles according to any one of claims 2-4, characterized in that, The diagnostic module has a measurement accuracy of ±1℃.

6. The safety protection detection device for axle temperature sensors in rail transit vehicles according to any one of claims 2-4, characterized in that, The diagnostic module has a measurement accuracy of ±0.1℃.

7. The safety protection detection device for axle temperature sensors in rail transit vehicles according to any one of claims 2-4, characterized in that, The diagnostic module has a measurement accuracy of ±0.5℃.

8. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The touch screen of the human-machine interface unit has a one-button operation interface, including: main power switch, test start button, insulation withstand voltage test start button, channel selection switch and mode selection switch.

9. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The touch screen of the human-machine interface unit has a large insulation resistance meter and a temperature analog signal indicator in the center.

10. The safety protection detection device for axle temperature sensors in rail transit vehicles according to claim 1, characterized in that, The indicator light in the audible and visual alarm is red.

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