Input and output board detection device

Abstract

The utility model discloses an input / output board detection device, which comprises an isolating circuit and a singlechip, the isolation circuit is connected with the input and output board and the single-chip microcomputer. The isolation circuit is used for collecting voltage signals of the input and output board and sending the voltage signals to the single-chip microcomputer. The single-chip microcomputer is used for obtaining a detection result of the input and output board according to the voltage signal. The beneficial effects of the input / output board detection device are that the single-chip microcomputer collects the voltage signals of the input / output board according to the isolation circuit, detects the input / output board, and provides a detection means for the input / output board; the fault dynamic relay in the input and output board can be accurately positioned through the detection result, and the fault dynamic relay in the board can be accurately positioned through off-line detection of the input and output board without direct replacement when a fault occurs, so that the maintenance cost is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate detection, in particular to an input and output plate detection device. Background Art

[0002] In the AzS(M)350U axle counting system, the block information input / output board (hereinafter referred to as the "I / O board") transmits information entering and exiting the interlocking system. This board consists of 12 dynamic relay outputs, 12 optocoupler inputs, and 96 configurable switches. Information on the vacancy or occupation of each track section is output via the contacts of the dynamic relays. Because the axle counting system utilizes dual-channel calculations, each section is associated with two I / O boards, each controlling two dynamic relays connected in series.

[0003] When a train enters a track section, the axle counting system outputs occupancy information to two input and output boards through dual-channel calculation, disconnecting the corresponding dynamic relay contacts, causing the external safety relay of the axle counting system to lose power and fall, giving an occupancy signal; when the train leaves, the dynamic relay contacts close, causing the external safety relay of the axle counting system to be energized and attracted, giving an idle signal.

[0004] However, the dynamic relays on the I / O boards have a high failure rate, and faults often recover automatically after power cycling, making it difficult to pinpoint the specific fault point. Existing technologies lack effective detection methods, making it difficult to reproduce the problem after recovery. This often requires replacing two I / O boards, increasing maintenance costs. Therefore, an I / O board detection device is urgently needed to provide an effective detection method. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an input-output board detection device, which can detect the input-output board to accurately locate the faulty dynamic relay in the board and save maintenance costs.

[0006] The utility model is implemented according to the following scheme:

[0007] Provided is an input / output board detection device, comprising an isolation circuit and a single-chip microcomputer;

[0008] The isolation circuit is connected to the input and output board and the single chip microcomputer;

[0009] The isolation circuit is used to collect the voltage signal of the input and output board and send it to the single chip microcomputer;

[0010] The single chip microcomputer is used to obtain the detection result of the input and output board according to the voltage signal.

[0011] The beneficial effects of an input-output board detection device of the present invention are as follows: the voltage signal of the input-output board is collected by the single-chip microcomputer according to the isolation circuit, and the input-output board is detected, which provides a detection means for the input-output board. The faulty dynamic relay in the input-output board can be accurately located through the detection result. By performing offline detection on the input-output board, the faulty dynamic relay in the board can be accurately located, and there is no need to directly replace it when a fault occurs, which effectively saves maintenance costs.

[0012] Optionally, the isolation circuit includes a signal input unit, an optocoupler isolator and a signal output unit; the optocoupler isolator is connected to the signal input unit and the signal output unit, the signal input unit is connected to the input / output board, and the signal output unit is connected to the single chip microcomputer;

[0013] The optical coupler isolator is used to isolate the electrical signals between the input and output board and the single chip microcomputer.

[0014] Optionally, it also includes a power supply circuit; the power supply circuit is connected to the isolation circuit and the single-chip microcomputer.

[0015] Optionally, it also includes an alarm circuit; the alarm circuit is connected to the single chip microcomputer and the power supply circuit.

[0016] Optionally, it also includes a display circuit; the display circuit is connected to the single chip microcomputer and the power supply circuit.

[0017] Optionally, it also includes a serial communication circuit; the serial communication circuit is connected to the single-chip microcomputer, the power supply, and an external device; the external device is used to communicate with the detection device.

[0018] Optionally, it also includes a functional module; the functional module is connected to the single chip microcomputer and the power supply circuit.

[0019] Optionally, the functional module includes: a reset circuit, a crystal oscillator circuit and an interface circuit;

[0020] The single chip microcomputer is connected to the reset circuit, the crystal oscillator circuit, and the interface circuit; the power supply circuit is connected to the reset circuit and the interface circuit; and the interface circuit is connected to the reset circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the detection device of the utility model;

[0022] Figure 2 This is a schematic diagram of the isolation circuit of the utility model;

[0023] Figure 3a This is a schematic diagram of the utility model single chip microcomputer Figure 1 ;

[0024] Figure 3b This is a schematic diagram of the utility model single chip microcomputer Figure 2 ;

[0025] Figure 3c This is the third schematic diagram of the single chip microcomputer of the utility model;

[0026] Figure 3d This is a schematic diagram of the utility model single chip microcomputer Figure 4 ;

[0027] Figure 3e This is a schematic diagram of the utility model single chip microcomputer Figure 5 ;

[0028] Figure 4 This is a schematic diagram of the power supply circuit of the utility model;

[0029] Figure 5 This is a schematic diagram of the alarm circuit of the utility model;

[0030] Figure 6 A schematic diagram of the display circuit of the utility model;

[0031] Figure 7 This is a schematic diagram of the serial communication circuit of the utility model;

[0032] Figure 8 This is a schematic diagram of the reset circuit of the utility model;

[0033] Figure 9 This is a schematic diagram of the crystal oscillator circuit of the present invention;

[0034] Figure 10 This is a schematic diagram of the interface circuit of the utility model.

[0035] Explanation of the accompanying symbols: 1. Isolation circuit; 101. Signal input unit; 102. Optocoupler isolator; 103. Signal output unit; 2. Single-chip microcomputer; 3. Power supply circuit; 4. Alarm circuit; 5. Display circuit; 6. Serial communication circuit; 7. Functional module; 701. Reset circuit; 702. Crystal oscillator circuit; 703. Interface circuit; 8. Input and output board; 9. External device. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0037] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] See also Figure 1 As shown, the utility model provides an input and output board 8 detection device, including an isolation circuit 1, a single-chip microcomputer 2, a power supply circuit 3, an alarm circuit 4, a display circuit 5, a serial communication circuit 6 and a functional module 7; the isolation circuit 1 is connected to the input and output board 8; the single-chip microcomputer 2 is connected to the isolation circuit 1, the power supply circuit 3, the alarm circuit 4, the display circuit 5, the serial communication circuit 6, and the functional module 7; the power supply circuit 3 is connected to the isolation circuit 1, the single-chip microcomputer 2, the alarm circuit 4, the display circuit 5, the serial communication circuit 6, and the functional module 7; and the serial communication circuit 6 is connected to the external device 9.

[0039] See also Figure 2 As shown, the isolation circuit 1 includes a signal input unit 101, an optocoupler isolator 102 and a signal output unit 103; the optocoupler isolator 102 is connected to the signal input unit 101 and the signal output unit 103, the signal input unit 101 is connected to the input and output board 8, and the signal output unit 103 is connected to the single chip computer 2.

[0040] The signal input unit 101 is used to collect the voltage signal of the input and output board 8. The optocoupler isolator 102 converts the voltage signal collected by the signal input unit 101 from an electrical signal to an optical signal and then converts it back to an electrical signal. In the optocoupler isolator, the voltage signal is transmitted as an optical signal instead of an electrical signal, which effectively prevents the electrical noise, transient voltage or ground loop problem input to the optocoupler isolator 102 from affecting the voltage signal output by the optocoupler isolator 102 to the signal output unit 103. The signal output unit 103 sends the voltage signal output by the optocoupler isolator 102 to the microcontroller 2. The optocoupler isolator 102 can isolate the electrical signal between the input and output board 8 and the microcontroller 2. The power supply circuit 3 provides working power for the isolation circuit 1.

[0041] Because the input-output board 8 includes four dynamic relays, the optocoupler isolator 102 simultaneously detects the output voltages of the four channels of the input-output board 8, of which two collection points (the input ends of the optocoupler isolator 102) jointly monitor one section; when the normal section is idle, the relay contacts in the input-output board 8 are connected, and after forming a loop, the isolation circuit 1 collects a low-level voltage signal and sends it to the microcontroller 2; when the section is occupied, the relay contacts in the input-output board 8 are disconnected, there is no output voltage, and the isolation circuit 1 collects a high-level voltage signal and sends it to the microcontroller 2.

[0042] See also Figures 3a-3e As shown, because the MCU 2 has too many pins, in order to clearly show the connection relationship of each pin, the MCU 2 is split into U4A, U4B, U4C, U4D, and U4E. Figures 3a-3e U4A, U4B, U4C, U4D, and U4E shown respectively constitute the single chip microcomputer 2 of the present invention.

[0043] The single-chip microcomputer 2 is connected to the signal output unit 103 in the isolation circuit 1 to receive the voltage signal of the input-output board 8 through the isolation circuit 1, so as to effectively isolate the electrical signal between the single-chip microcomputer 2 and the input-output board 8, thereby preventing the electrical interference of the input-output board 8 from affecting the detection result of the single-chip microcomputer 2 on the voltage signal of the input-output board 8, thereby affecting the detection result of the single-chip microcomputer 2 on the voltage signal of the input-output board 8.

[0044] The single chip computer 2 is connected with the alarm circuit 4 and the display circuit 5, so that the single chip computer 2 detects the voltage signal of the input and output board 8. When it is found that there is a fault in the input and output board 8, an alarm instruction is sent to the alarm circuit 4 to remind the staff of the fault through sound and indicator light; and the fault information and the fault dynamic relay are sent to the display circuit 5, so that the fault information and the fault dynamic relay are displayed through the display circuit 5, so that the staff can accurately locate the fault position and repair the faulty dynamic relay without directly replacing the entire board when there is a fault in the board, which can effectively save maintenance costs.

[0045] The single-chip microcomputer 2 is connected to the external device 9 through the serial communication circuit 6, and the staff can communicate with the detection device through the external device 9; the single-chip microcomputer 2 is connected to the functional module 7, and the functional module 7 controls the single-chip microcomputer 2 to reset, provide a stable clock signal for the single-chip microcomputer 2, and receive the program code of the control logic of the single-chip microcomputer 2.

[0046] When the level of any one channel of the single-chip microcomputer 2 changes, the timer inside the single-chip microcomputer 2 is started. When the same level change occurs in the other channel within 2 seconds, the timer is turned off and the timing duration (the time difference between the two channel level changes) is recorded, and the number of times is increased by 1. When the timing duration is greater than 2 seconds and the same level change is still not received, it is considered that the corresponding circuit is not connected, and the missing positive or negative voltage is recorded. The fault information and the fault dynamic relay are sent to the display circuit 5 to display the fault information and the fault dynamic relay through the display circuit 5 to accurately locate the fault position. The instruction to turn on the sound and light alarm is also sent to the alarm circuit 4 to alarm through sound and indicator light. The single-chip microcomputer 2 also saves the acquisition times and fault information inside to avoid data loss due to power failure, so that the staff can check the detection status at any time through the external device 9 of the serial communication circuit 6 without the need to manually record the detection results.

[0047] See also Figure 4 As shown, the power supply circuit 3 is connected to the isolation circuit 1, the single chip computer 2, the alarm circuit 4, the display circuit 5, and the serial communication circuit 6 functional circuits, and serves as the power supply source for the detection device.

[0048] See also Figure 5 As shown, the alarm circuit 4 is connected to the single-chip computer 2 and the power supply circuit 3. When the single-chip computer 2 detects that there is a fault in the input and output board 8, the indicator light LED7 and the speaker BEEP in the alarm circuit 4 will sound and light alarms to remind the staff that there is a faulty relay in the input and output board 8.

[0049] See also Figure 6 As shown, the display circuit 5 is connected to the single-chip computer 2 and the power supply circuit 3. When the single-chip computer 2 detects that there is a fault in the input-output board 8, it sends fault information and a fault dynamic relay to the display circuit 5, so that the fault information and the fault dynamic relay are displayed through the display circuit 5, so that the staff can accurately locate the fault dynamic relay. There is no need to directly replace the board when a fault occurs in the input-output board 8 because the fault location cannot be determined, which will greatly increase the maintenance cost. By accurately locating the fault location, the staff can replace the fault dynamic relay in a targeted manner, reducing the maintenance cost of the input-output board 8.

[0050] See also Figure 7 As shown, the serial communication circuit 6 is connected to the single-chip microcomputer 2, the power supply circuit 3, and the external device 9. The staff is connected to the detection device through the external device 9. The single-chip microcomputer 2 can send the detection results to the external device 9 through the serial communication circuit 6, so that the staff can also view the detection results through the external device 9.

[0051] See also Figure 8As shown, the reset circuit 701 is connected to the single-chip microcomputer 2, the power supply, and the interface circuit 703. The reset circuit 701 is used to ensure that the single-chip microcomputer 2 can be restored to the initial state when powered on or abnormal, and to initialize the program code of the control logic of the single-chip microcomputer 2 received by the interface circuit 703; see Figure 9 As shown, the crystal oscillator circuit 702 is connected to the single-chip microcomputer 2, and the crystal oscillator circuit 702 is used to provide a stable clock signal for the single-chip microcomputer 2 to ensure the synchronization of its internal operations; Figure 10 As shown, the interface circuit 703 is connected to the single-chip microcomputer 2, the power supply, and the reset circuit 701. The interface circuit 703 is used for program downloading, debugging, and firmware updating. It is an important channel for the staff to interact with the single-chip microcomputer 2 to receive the program code of the control logic of the single-chip microcomputer 2. The reset circuit 701 is used to initialize the program code of the control logic of the single-chip microcomputer 2 received by the interface circuit 703.

[0052] The utility model detects the input and output board 8 through the isolation circuit 1 and the single-chip microcomputer 2 to accurately locate the faulty dynamic relay of the input and output board 8. When a fault occurs in the input and output board 8, the staff can replace only the faulty dynamic relay without directly replacing the entire input and output board 8, thereby reducing maintenance costs.

[0053] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An input and output board detection device, characterized in that: Including isolation circuit and single chip microcomputer; The isolation circuit is connected to the input and output board and the single chip microcomputer; The isolation circuit is used to collect the voltage signal of the input and output board and send it to the single chip microcomputer; The single chip microcomputer is used to obtain the detection result of the input and output board according to the voltage signal.

2. The input-output board detection device according to claim 1, characterized in that: The isolation circuit includes a signal input unit, an optocoupler isolator and a signal output unit; the optocoupler isolator is connected to the signal input unit and the signal output unit, the signal input unit is connected to the input and output board, and the signal output unit is connected to the single chip microcomputer; The optical coupler isolator is used to isolate the electrical signals between the input and output board and the single chip microcomputer.

3. The input-output board detection device according to claim 1, characterized in that: It also includes a power supply circuit; the power supply circuit is connected to the isolation circuit and the single chip microcomputer.

4. The input-output board detection device according to claim 3, characterized in that: It also includes an alarm circuit; the alarm circuit is connected to the single chip microcomputer and the power supply circuit.

5. The input-output board detection device according to claim 3, characterized in that: It also includes a display circuit; the display circuit is connected to the single chip computer and the power supply circuit.

6. The input-output board detection device according to claim 3, characterized in that: It also includes a serial communication circuit; the serial communication circuit is connected to the single-chip microcomputer, the power supply circuit, and an external device; the external device is used to communicate with the detection device.

7. The input-output board detection device according to claim 3, characterized in that: It also includes a functional module; the functional module is connected to the single chip microcomputer and the power supply circuit.

8. The input-output board detection device according to claim 7, characterized in that: The functional module includes: a reset circuit, a crystal oscillator circuit and an interface circuit; The single chip microcomputer is connected to the reset circuit, the crystal oscillator circuit, and the interface circuit; the power supply circuit is connected to the reset circuit and the interface circuit; and the interface circuit is connected to the reset circuit.

Images