Contact uniformity testing method suitable for railway signal relay

Abstract

The invention relates to a railway signal relay contact uniformity test method. The method is characterized in that a uniformity test control unit (1), a human-computer interaction interface, a railway signal relay socket (5), a displacement sensor (6), a code scanning gun (7) and an operation table (8) are included; wherein the human-computer interaction interface comprises an industrial screen and button (2) and a uniformity indication lamp (3); a displacement sensor (6), a tested relay (4), a railway signal relay socket (5) and a uniformity test control unit (1) are sequentially arranged on the operating platform (8) from left to right; the industrial screen and button (2) and the uniformity indication lamp (3) are arranged in front of and behind the uniformity test control unit (1); the code scanning gun (7) is electrically connected with the uniformity test control unit (1) through an interface; according to the contact uniformity testing device suitable for the railway signal relay, the contact uniformity error of the railway signal relay can be conveniently tested, and the requirements of product standards are met.

Description

Technical Field

[0001] The invention relates to a contact alignment testing method suitable for railway signal relays. Background Art

[0002] The TB / T 3383-2023 Railway Signal Relay AX Series Relay standard stipulates that the alignment error of the same type of relay contacts closed or opened should not be greater than 0.2 mm between ordinary contacts, 0.1 mm between reinforced contacts, and 0.5 mm between ordinary contacts and reinforced contacts. The TB / T 3384-2023 Railway Signal Relay Test Method stipulates that the measurement of contact alignment, pushing the armature to check the error of simultaneous contact or disconnection of each contact, the difference is measured by a gauge (or time tester) and detected by an indicator light, and should comply with the provisions of the product standard. At present, the voltage method is used in the market to achieve alignment testing, which does not meet the requirements of the product standard. Summary of the invention

[0003] The purpose of the present invention is to provide a method for testing the contact alignment of a railway signal relay, so as to facilitate the testing of the contact alignment error of the railway signal relay and meet the requirements of product standards.

[0004] The object of the present invention is achieved as follows: It relates to a method for testing the alignment of railway signal relay contacts, which is characterized in that it relates to a method suitable for testing the alignment of railway signal relay contacts, which is characterized in that it includes: an alignment test control unit, a human-machine interaction interface, a railway signal relay socket, a displacement sensor, a barcode scanner, and an operating table; wherein the human-machine interaction interface includes: an industrial screen and a button and an alignment indicator light; the displacement sensor, the relay to be tested, the railway signal relay socket, and the alignment test control unit are placed on the operating table from left to right in sequence; the alignment test control unit is provided with an industrial screen and a button and an alignment indicator light before and after the industrial screen and a button, and the barcode scanner is electrically connected to the alignment test control unit through an interface; the railway signal relay socket and the displacement sensor are also electrically connected to the alignment test control unit through an interface; the alignment test control unit receives the operation instructions of the human-machine interaction interface (industrial screen and button 2), receives the information collected by the railway signal relay socket, the displacement sensor and the barcode scanner, executes the alignment test process according to the instructions and the algorithm, saves the test data, and transmits the traceable data to the operation and maintenance system.

[0005] The alignment test control unit controls the lifting and lowering of the relay under test, and receives the relay number information transmitted by the barcode scanner; receives the armature action information transmitted by the displacement sensor; receives the relay contact closing and disconnection information transmitted by the relay socket; the alignment test control unit obtains the relay alignment information by calculation, transmits the model, number and alignment information of the relay under test to the operation and maintenance system through the Ethernet interface, and displays the information through the industrial screen and the alignment indicator light.

[0006] The alignment test control unit is a control and data processing center. It controls the measured relay to pick up and drop down through the driving power output interface; Receive the relay number information under test transmitted by the barcode scanner through the USB interface; Receive armature motion information transmitted by the displacement sensor through the serial port; Receive relay contact closing and opening information transmitted from the relay socket through the I / O interface; The relay alignment information is obtained by calculation, and the model, number and alignment information of the relay under test are displayed on the industrial screen and alignment indicator through the serial port and I / O interface; At the same time, it is transmitted to the operation and maintenance system through the Ethernet interface.

[0007] The alignment test control unit includes a CPU, a data storage unit FLASH, a power module, an isolation unit, a USB interface, an Ethernet interface, at least a 16-bit I / O interface, and at least two groups of RS232 / 485 interfaces. The CPU is connected to buttons, industrial display screens, displacement sensors, barcode scanners, operation and maintenance units, and relay interfaces through isolated bidirectional interfaces; wherein: buttons and relay interfaces are electrically connected through I / O, industrial display screens and displacement sensors are electrically connected through RS232 serial interfaces; barcode scanners are electrically connected through USB interfaces; and operation and maintenance units are electrically connected through Ethernet networks; the CPU in the alignment test control unit has a FLASH expansion port, which is electrically connected to the storage FLASH through the FLASH expansion port; the CPU in the alignment test control unit is powered by a power supply module to provide the required power.

[0008] The alignment test control unit also includes a driving power supply input and provides power to the tested relay. The driving power supply is input through the driving power supply interface, and the voltage sampling and current sampling information are read respectively. According to the voltage sampling and current sampling information, the CPU controls the power supply to the tested relay through the power supply control unit.

[0009] The control of the device includes two parts: automatic test and manual test. The specific workflow is as follows: 101 The system is powered on and started; 102 Power-on self-test: Manual repair if there is a fault, and proceed to the next step if there is no fault; 103 Enter the relay code manually or by scanning a barcode gun; 104 Select manual / automatic test type. In automatic mode, enter process 105; in manual mode, enter process 116; 105 Press the automatic test button or click the automatic test button on the display screen, the device enters the automatic test state, first testing the alignment of the front contacts of the relay;

[0010] When the 106 relay is in the dropped state, the sensor measures the distance to the armature and records it as the calibration value 1; 107 Relay is powered on and started; 108 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 109 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the alignment of the front contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 110 Start testing the contact alignment of the relay; 111 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 112 The relay is de-energized and falls; 113 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 114 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 115 After the test is completed, the test results are automatically stored in the database and uploaded to the operation and maintenance system through the communication channel. 116 Press the manual test front contact button or click the automatic test front contact button on the display screen, and the device enters the manual test state of the front contact alignment;

[0011] 117 When the relay is in the down state, the sensor measures the distance to the armature and records it as the calibration value 1; 118 Relay powered on and started; 119 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 120 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the front contact alignment is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 121 Press the manual test rear contact button or click the automatic test rear contact button on the display screen, and the device enters the manual test rear contact alignment state; 122 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 123 The relay is de-energized and falls; 124 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 125 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 126 When necessary, click on the display to store and upload data. The test results are stored in the database and uploaded to the operation and maintenance system through the communication channel.

[0012] The advantages of the present invention are that the present invention can test the contact alignment of railway signal relays in full accordance with product standard requirements, and can realize functions such as manual and automatic testing, product data storage and tracing, and networking with operation and maintenance systems.

[0013] The present invention will be further described below in conjunction with the embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a device applicable to a method for testing the contact alignment of a railway signal relay according to the present invention; Figure 2 It is a circuit schematic diagram of a device applicable to a method for testing the contact alignment of a railway signal relay according to the present invention; Figure 3 It is the schematic diagram of the alignment test control unit Figure 4 The invention discloses a test flow chart of an equipment test method suitable for railway signal relay contact alignment test.

[0015] In the figure: 1. Alignment test control unit, 2. Industrial screen and buttons, 3. Alignment indicator light, 4. Relay under test, 5. Railway signal relay socket, 6. Displacement sensor, 7. Barcode scanner, 8. Operating table. DETAILED DESCRIPTION

[0016] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and examples, so as to fully understand how the present invention applies technical means to solve technical problems and achieve the implementation process of technical effects and implement them accordingly.

[0017] like Figure 1As shown, the present invention relates to a method for testing the contact alignment of a railway signal relay, which is characterized in that it comprises an alignment test control unit 1, a human-machine interaction interface, a railway signal relay socket 5, a displacement sensor 6, a barcode scanner 7, and an operating table 8; wherein the human-machine interaction interface comprises an industrial screen and a button 2 and an alignment indicator light 3; the displacement sensor 6, the relay to be tested 4, the railway signal relay socket 5, and the alignment test control unit 1 are placed in sequence from left to right on the operating table 8; the alignment test control unit 1 is provided with an industrial screen and a button 2 and an alignment indicator light 3 before and after the industrial screen and a button 2 and an alignment indicator light 3, and the barcode scanner 7 is electrically connected to the alignment test control unit 1 through an interface; the railway signal relay socket 5 and the displacement sensor 6 are also electrically connected to the alignment test control unit 1 through an interface; the alignment test control unit 1 receives operation instructions of the human-machine interaction interface (industrial screen and button 2), receives information collected by the railway signal relay socket 5, the displacement sensor 6 and the barcode scanner 7, executes the alignment test process according to the instructions and the algorithm, saves the test data, and transmits the traceable data to the operation and maintenance system.

[0018] In the present invention, the displacement sensor 6 adopts a laser displacement sensor, which is installed in front of the relay core pole shoe, about 30mm away from the armature surface, with a measurement range of ±5mm. The displacement sensor 6 is used to test the distance from the sensor to the armature of the relay 4 under test in real time, and transmit it to the alignment test control unit 1.

[0019] The alignment test control unit 1 calculates the movement of the contact of the relay 4 under test according to the length ratio of the measuring point, the pull rod to the armature and the choke connection point. At the same time, the alignment test control unit 1 collects the switching quantity information of the contact system of the relay 4 under test and obtains the contact alignment error information through the algorithm.

[0020] In the present invention, the barcode scanner 7 automatically identifies and records the model and number of the relay 4 under test by scanning the QR code or barcode of the relay 4 under test, and transmits the model and number information of the relay 4 under test to the alignment test control unit 1.

[0021] In the present invention, the alignment test control unit 1 controls the suction and drop of the measured relay 4, and receives the number information of the measured relay 4 transmitted by the barcode scanner 7; receives the armature action information transmitted by the displacement sensor 6; receives the relay contact closing and opening information transmitted by the relay socket 5. The alignment test control unit 1 obtains the alignment information of the relay through calculation, transmits the model, number and alignment information of the measured relay 4 to the operation and maintenance system through the Ethernet interface, and displays the information through the industrial screen 2 and the alignment indicator light 3.

[0022] In the present invention, the operating table is used to support relevant testing instruments and equipment to facilitate operation by staff.

[0023] Figure 2The circuit diagram of a device suitable for testing the contact alignment of railway signal relays is given.

[0024] The alignment test control unit 1 is a control and data processing center. It controls the measured relay 4 to suck up and drop down through the driving power output interface; Receive the number information of the relay 4 under test transmitted by the barcode scanner 7 through the USB interface; Receive armature action information transmitted from displacement sensor 6 through the serial port; Receiving relay contact closing and opening information transmitted from relay socket 5 through the I / O interface; The alignment information of the relay is obtained by calculation, and the model, number and alignment information of the relay 4 under test are displayed on the industrial screen 2 and the alignment indicator light 3 through the serial port and the I / O interface; At the same time, it is transmitted to the operation and maintenance system through the Ethernet interface.

[0025] like Figure 3 As shown, the alignment test control unit 1 mainly includes a CPU, a data storage unit FLASH, a power module, an isolation unit, a USB interface, an Ethernet interface, at least a 16-bit I / O interface, and at least 2 groups of RS232 / 485 interfaces. The CPU is connected to buttons, industrial display screens, displacement sensors 6, barcode scanners 7, operation and maintenance units, and relay interfaces through isolated bidirectional interfaces; wherein: buttons and relay interfaces are electrically connected through I / O, industrial display screens and displacement sensors 6 are electrically connected through RS232 serial interfaces; barcode scanners 7 are electrically connected through USB interfaces; and the operation and maintenance units are electrically connected through Ethernet networks.

[0026] The CPU in the alignment test control unit 1 has a FLASH expansion port, and is electrically connected to the memory FLASH via the FLASH expansion port.

[0027] The CPU in the alignment test control unit 1 is powered by a power supply module that provides the required power.

[0028] The alignment test control unit 1 also includes a driving power input and provides power to the tested relay. The driving power is input through the driving power interface, and the voltage sampling and current sampling information are read respectively. According to the voltage sampling and current sampling information, the CPU controls the power supply to the tested relay through the power control unit.

[0029] like Figure 4 As shown, the present invention relates to a test flow chart applicable to a railway signal relay contact alignment test method, wherein the control flow mainly includes two parts: automatic test and manual test.

[0030] The specific workflow is described as follows: 101 The system is powered on and started; 102 Power-on self-test: Manual repair if there is a fault, and proceed to the next step if there is no fault; 103 Enter the relay code manually or by scanning a barcode gun; 104 Select manual / automatic test type, enter 105 process when automatic, and enter 116 process when manual. 105 Press the automatic test button or click the automatic test button on the display screen, the device enters the automatic test state, first testing the alignment of the front contacts of the relay;

[0031] When the 106 relay is in the dropped state, the sensor measures the distance to the armature and records it as the calibration value 1; 107 Relay is powered on and started; 108 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 109 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the alignment of the front contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 110 Start testing the contact alignment of the relay; 111 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 112 The relay is de-energized and falls; 113 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 114 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 115 After the test is completed, the test results are automatically stored in the database and uploaded to the operation and maintenance system through the communication channel. 116 Press the manual test front contact button or click the automatic test front contact button on the display screen, and the device enters the manual test state of the front contact alignment;

[0032] 117 When the relay is in the down state, the sensor measures the distance to the armature and records it as the calibration value 1; 118 Relay powered on and started; 119 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 120 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the front contact alignment is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 121 Press the manual test rear contact button or click the automatic test rear contact button on the display screen, and the device enters the manual test rear contact alignment state; 122 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 123 The relay is de-energized and falls; 124 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 125 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 126 When necessary, click on the display to store and upload data. The test results are stored in the database and uploaded to the operation and maintenance system through the communication channel.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A method for testing the contact alignment of a railway signal relay, characterized in that: include: An alignment test control unit (1), a human-machine interaction interface, a railway signal relay socket (5), a displacement sensor (6), a barcode scanner (7), and an operating table (8); wherein the human-machine interaction interface comprises: an industrial screen and a button (2) and an alignment indicator light (3); the displacement sensor (6), a relay to be tested (4), a railway signal relay socket (5), and an alignment test control unit (1) are placed in sequence from left to right on the operating table (8); the alignment test control unit (1) is provided with an industrial screen and a button (2) and an alignment indicator light (3) at the front and rear, and the barcode scanner (7) is electrically connected to the alignment test control unit (1) through an interface; the railway signal relay socket (5) and the displacement sensor (6) are also electrically connected to the alignment test control unit (1) through an interface; the alignment test control unit (1) receives operation instructions from the human-machine interaction interface, i.e., the industrial screen and the button (2), receives information collected by the railway signal relay socket (5), the displacement sensor (6), and the barcode scanner (7), executes an alignment test process according to the instructions and the algorithm, saves the test data, and transmits traceable data to the operation and maintenance system.

2. A method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The displacement sensor (6) is used to test the distance between the sensor and the armature of the relay (4) under test in real time, and transmit the distance to the alignment test control unit (1). The displacement sensor (6) adopts a laser displacement sensor and is installed in front of the relay core pole shoe, about 30 mm away from the armature surface, and has a measurement range of ±5 mm.

3. A method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The alignment test control unit (1) calculates the movement amount of the contact of the relay (4) under test according to the ratio of the length of the measuring point, the pull rod to the armature and the choke connection point. At the same time, the alignment test control unit (1) collects the switching quantity information of the contact system of the relay (4) under test, and obtains the contact alignment error information through an algorithm.

4. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The barcode scanner (7) automatically identifies and records the model and number of the relay (4) under test by scanning the QR code or barcode of the relay (4) under test, and transmits the model and number information of the relay (4) under test to the alignment test control unit (1).

5. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The alignment test control unit (1) controls the measured relay (4) to be sucked up and dropped, and receives the number information of the measured relay (4) transmitted by the barcode scanning gun (7); receives the armature action information transmitted by the displacement sensor (6); and receives the relay contact closing and opening information transmitted by the relay socket (5); the alignment test control unit (1) obtains the relay alignment information by calculation, transmits the model, number and alignment information of the measured relay (4) to the operation and maintenance system through the Ethernet interface, and displays the information through the industrial screen (2) and the alignment indicator light (3).

6. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The alignment test control unit (1) is a control and data processing center. It controls the measured relay (4) to be sucked up and down through the driving power output interface; Receive the serial number information of the relay (4) under test transmitted by the barcode scanner (7) through the USB interface; receiving armature motion information transmitted by the displacement sensor (6) through the serial port; receiving relay contact closing and opening information transmitted from the relay socket (5) via the I / O interface; The alignment information of the relay is obtained by calculation, and the model, number and alignment information of the relay (4) under test are displayed on the industrial screen (2) and the alignment indicator light (3) through the serial port and the I / O interface; and at the same time, the information is transmitted to the operation and maintenance system through the Ethernet interface.

7. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The alignment test control unit (1) comprises a CPU, a data storage unit FLASH, a power module, an isolation unit, a USB interface, an Ethernet interface, at least a 16-bit I / O interface, and at least two groups of RS232 / 485 interfaces. The CPU is connected to a key, an industrial display screen, a displacement sensor (6), a barcode scanner (7), an operation and maintenance unit, and a relay interface through an isolation bidirectional interface. The key and the relay interface are electrically connected through the I / O, the industrial display screen and the displacement sensor are electrically connected through an RS232 serial interface; the barcode scanner (7) is electrically connected through a USB interface; the operation and maintenance unit is electrically connected through an Ethernet network; the CPU in the alignment test control unit (1) has a FLASH expansion port, which is electrically connected to the storage FLASH through the FLASH expansion port; the CPU in the alignment test control unit (1) is powered by a power supply module to provide the required power.

8. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The alignment test control unit (1) also includes a drive power input and a power supply for supplying power to the relay (4) under test. The drive power is input through the drive power interface, and voltage sampling and current sampling are performed respectively. The voltage sampling and current sampling information are read. Based on the voltage sampling and current sampling information, the CPU controls the supply of power to the relay (4) under test through the power control unit.

9. The method for testing the contact alignment of a railway signal relay according to claim 1, characterized in that: The control of the alignment test control unit (1) includes two parts: automatic test and manual test. The specific working process is as follows: 101 The system is powered on and started; 102 Power-on self-test: Manual repair if there is a fault, and proceed to the next step if there is no fault; 103 Enter the relay code manually or by scanning a barcode gun; 104 Select manual / automatic test type. In automatic mode, enter process 105; in manual mode, enter process 116; Automatic testing process: 105 Press the automatic test button or click the automatic test button on the display screen, the device enters the automatic test state, first testing the alignment of the front contacts of the relay; When the 106 relay is in the dropped state, the sensor measures the distance to the armature and records it as the calibration value 1; 107 Relay is powered on and started; 108 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 109 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the alignment of the front contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 110 Start testing the contact alignment of the relay; 111 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 112 The relay is de-energized and falls; 113 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 114 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed through an industrial display and LED; 115 After the test is completed, the test results are automatically stored in the database and uploaded to the operation and maintenance system through the communication channel; Manual testing process: 116 Press the manual test front contact button or click the automatic test front contact button on the display screen, and the device enters the manual test state of the front contact alignment; 117 When the relay is in the down state, the sensor measures the distance to the armature and records it as the calibration value 1; 118 Relay powered on and started; 119 The front contact conduction triggers the corresponding sensor to armature distance 1-distance 8 acquisition; 120 By comparing with the calibration value 1, the relative displacement of each group of front contacts when closed is calculated, and the front contact alignment is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 121 Press the manual test rear contact button or click the automatic test rear contact button on the display screen, and the device enters the manual test rear contact alignment state; 122 When the relay is in working state, the sensor measures the distance to the armature and records it as calibration value 2; 123 The relay is de-energized and falls; 124 The back contact conduction triggers the corresponding sensor to armature distance 9-distance 16 acquisition; 125 By comparing with the calibration value 2, the relative displacement of each group of rear contacts when closed is calculated, and the alignment of the rear contacts is further calculated to determine whether it is qualified, and the test results are displayed on the industrial display and LED; 126 When necessary, click on the display to store and upload data. The test results are stored in the database and uploaded to the operation and maintenance system through the communication channel.

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