A detection circuit, a detection device and a detection method for a vehicle rotation sensor

Abstract

The present invention relates to a vehicle rotation sensor detection circuit, a detection device and a detection method, and belongs to the field of sensor detection technology. The detection circuit of the present invention integrates a general detection circuit, a self-detection circuit and a line detection circuit, and realizes sensor detection, detection device self-detection and cable line detection in one through a special circuit design of a general detection plug, a line detection plug, multiple resistors, multiple light-emitting diodes, multiple button switches, two relays and a lithium battery pack. The present invention designs the circuit based on the design concept of portability and ease of operation, and the circuit design is simple and reasonable, which makes the detection equipment using the circuit small in size, light in weight and low in energy consumption. The sensor performance detection can be completed by hand-held, and the operation is simple. Compared with the traditional detection circuit, the self-detection and line detection functions are added, which effectively avoids the misjudgment of the detection result caused by the failure of the detection device and the disconnection of the connecting cable, thereby improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor detection, and in particular to a vehicle rotation sensor detection circuit, a detection device and a detection method. Background Art

[0002] At present, some vehicles use rotation sensors to send out signals of the rotation frame being in place and positioning signals. During use, common faults are the lack of coding signals, positioning signals, and signal failures caused by inaccurate installation and positioning. Based on this, a detection device for the rotation sensor is designed, but the current detection device is only used for sensor detection, and does not have the functions of self-testing the detection device and cable detection. In addition, the existing detection equipment has poor operability and portability. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, thereby providing a vehicle rotation sensor detection circuit, a detection device and a detection method.

[0004] A vehicle rotation sensor detection circuit includes: a general detection plug, a line detection plug, multiple resistors, multiple light-emitting diodes, multiple button switches, two relays and a lithium battery pack;

[0005] The general inspection plug has a total of 8 pins. Pin 1 is connected to one end of resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, self-test button switch, resistor R7 and the general inspection button switch. The other ends of resistors R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6 and resistor R7 are respectively connected to the anodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode. The cathodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode are respectively connected to pin 2, pin 3, pin 4, pin 5, pin 6 and pin 7. and pin 8, the other end of the self-check button switch is connected to one end of relay K1 and relay K2, the other end of relay K1 and relay K2 is connected to pin 8, the contact K1.1, contact K1.2 and contact K1.3 on relay K1 are connected to the cathodes of light-emitting diode e, light-emitting diode d and light-emitting diode c respectively, the contacts K2.1, K2.2 and K2.3 on relay K2 are connected to the cathodes of light-emitting diode b, light-emitting diode a and positioning light-emitting diode respectively, the cathode of the power light-emitting diode is connected to pin 8, the other end of the general inspection button switch is connected to one end of the lithium battery pack, the other end of the lithium battery pack is connected to pin 8, and the two ends of the line inspection button switch are respectively connected to pin 8 and the pin of the line inspection plug.

[0006] Furthermore, the colors of the light-emitting diode e, the light-emitting diode d, the light-emitting diode c, the light-emitting diode b and the light-emitting diode a are red, the color of the positioning light-emitting diode is blue, and the color of the power light-emitting diode is green.

[0007] Furthermore, the output voltage of the lithium battery pack is 12V.

[0008] A vehicle rotation sensor detection device, the device comprising the vehicle rotation sensor detection circuit, shell and display panel described in any one of the above items, the vehicle rotation sensor detection circuit is arranged inside the shell, the display panel is arranged on the upper surface of the shell, light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode, power light-emitting diode, general inspection button switch, self-inspection button switch and line inspection button switch all extend from the inside of the shell to the outside of the display panel, and the general inspection plug and the line inspection plug are distributed on both sides of the shell.

[0009] Furthermore, the LED e, LED d, LED c, LED b and LED a are located in the same row, and the positioning LED, power LED, general inspection button switch, self-inspection button switch and line inspection button switch are located in the same row.

[0010] A vehicle rotation sensor detection method, the method is based on the vehicle rotation sensor detection device described above, and comprises the following steps:

[0011] S1: Perform device self-test; press the general test button switch, the system is powered on, the power LED lights up, press the self-test button switch, if LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if any LED is not lit, the corresponding circuit is broken;

[0012] S2: Conduct line inspection; connect the two ends of the cable to be inspected to the general inspection plug and line inspection plug of the device, press the line inspection button switch, if the LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if the LED is not lit, the cable is broken;

[0013] S3: Perform sensor detection; press the general inspection button switch again, disconnect the power circuit, remove the cable at the line inspection plug, connect it to the sensor to be tested, press the general inspection button switch, power on the system, and the power LED lights up. If it is an in-situ detection, you need to manually rotate the rotating frame. If it is a detection after disassembly, rotate the rotating sensor gear for one circle and observe whether LED e, LED d, LED c, LED b, LED a and positioning LED are on and off. If each LED is on and off, the sensor is normal. If a certain LED is on or off, the circuit corresponding to the LED is faulty.

[0014] S4: Position the sensor; if the sensor is to be disassembled for testing, the sensor needs to be installed: rotate the sensor gear until the positioning LED lights up, keep the gear in place, and fix the sensor. During the fixing process, the positioning LED is always on.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The present invention is based on the design concept of portability and ease of operation, integrating the general inspection circuit, self-inspection circuit and line inspection circuit together, and the circuit design is simple and reasonable, which makes the detection equipment using this circuit small in size, light in weight, and low in energy consumption. The sensor performance detection can be completed by hand-held, and the operation is simple.

[0017] 2. The present invention has an independent power supply built in, which supplies power to the device and the sensor to be tested through a lithium battery pack. It is not restricted by an external power supply and can realize independent detection of the sensor and in-situ detection.

[0018] 3. Compared with the traditional detection circuit, the present invention adds self-detection and line detection functions, which effectively avoids the misjudgment of the detection result caused by the failure of the detection device and the disconnection of the connecting cable, thereby improving the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The schematic diagram of the vehicle rotation sensor detection circuit is shown;

[0021] Figure 2 This is the sensor detection schematic diagram;

[0022] Figure 3This is the self-test schematic diagram;

[0023] Figure 4 This is the schematic diagram of cable detection;

[0024] Figure 5 This is the principle diagram of the detection device;

[0025] Figure 6 A schematic diagram of the display panel. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] See also Figures 1 to 4 , a vehicle rotation sensor detection circuit, comprising: a general inspection plug, a line inspection plug, a plurality of resistors, a plurality of light emitting diodes, a plurality of button switches, two relays and a lithium battery pack;

[0031] The general inspection plug has a total of 8 pins. Pin 1 is connected to one end of resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, self-test button switch, resistor R7 and the general inspection button switch. The other ends of resistors R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6 and resistor R7 are respectively connected to the anodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode. The cathodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode are respectively connected to pin 2, pin 3, pin 4, pin 5, pin 6 and pin 7. and pin 8, the other end of the self-check button switch is connected to one end of relay K1 and relay K2, the other end of relay K1 and relay K2 is connected to pin 8, the contact K1.1, contact K1.2 and contact K1.3 on relay K1 are connected to the cathodes of light-emitting diode e, light-emitting diode d and light-emitting diode c respectively, the contacts K2.1, K2.2 and K2.3 on relay K2 are connected to the cathodes of light-emitting diode b, light-emitting diode a and positioning light-emitting diode respectively, the cathode of the power light-emitting diode is connected to pin 8, the other end of the general inspection button switch is connected to one end of the lithium battery pack, the other end of the lithium battery pack is connected to pin 8, and the two ends of the line inspection button switch are respectively connected to pin 8 and the pin of the line inspection plug. LED e, LED d, LED c, LED b and LED a are 5-way coded signal indicator lights (used to display performance test results), the positioning LED is used for positioning display when the sensor is installed, the power LED is used for power status display, the general inspection button switch, self-test button switch and line inspection button switch are used for sensor detection, detection device self-test and connection cable detection status selection.

[0032] This detection circuit integrates the general detection circuit, self-detection circuit and line detection circuit, which correspond to sensor detection, detection device self-detection and cable detection respectively. The corresponding detection principles are as follows: Figure 2-4 As shown; when the sensor is detected, the sensor is connected to the detection circuit through 8 wires, and the 8 wires are respectively connected to pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7 and pin 8, of which the 2 wires connected to pin 1 and pin 8 are power lines, and the lithium battery pack provides power for the sensor, 5 are encoding signal lines, and the rotary sensor rotates one circle, and the high and low levels are output according to the encoding rules; 1 is a positioning signal line, and the rotary sensor rotates one circle, and the high and low levels are converted 22 times;

[0033] When the general inspection button switch is pressed, the lithium battery pack provides 12V voltage to LED e, LED d, LED c, LED b, LED a, positioning LED and sensor, and the power LED is always on. When the five-way coding signal and positioning signal corresponding to LED e, LED d, LED c, LED b, and LED a in the rotation sensor are at a low level, the LED is on, and the LED is off when it is at a high level. When the rotation sensor rotates one circle, LED e, LED d, LED c, LED b, LED a, and positioning LED should light up and go out alternately.

[0034] When the self-test button switch is pressed, relays K1 and K2 are energized, contacts K1.1, K1.2, K1.3, K2.1, K2.2 and K2.3 are closed, the light-emitting diodes of the corresponding branches form a circuit, the light-emitting diodes light up, and self-test is realized.

[0035] Connect the detection cable to the general inspection plug and the line inspection plug, press the line inspection button switch, and the branch where LED e, LED d, LED c, LED b, LED a and the positioning LED are located will form a loop through the cable and the line inspection button. If all the above LEDs are lit, the connecting cable is intact.

[0036] In this embodiment, the colors of the LED e, LED d, LED c, LED b and LED a are red, the color of the positioning LED is blue, and the color of the power LED is green, so as to distinguish them and make it easier for users to identify them.

[0037] See also Figure 5 and Figure 6 The present invention also includes a vehicle rotation sensor detection device, which includes the vehicle rotation sensor detection circuit, shell and display panel described in any one of the above items, the vehicle rotation sensor detection circuit is arranged inside the shell, and the display panel is arranged on the upper surface of the shell, the light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode, power light-emitting diode, general inspection button switch, self-inspection button switch and line inspection button switch all extend from the inside of the shell to the outside of the display panel, and the general inspection plug and the line inspection plug are distributed on both sides of the shell.

[0038] The light emitting diode e, light emitting diode d, light emitting diode c, light emitting diode b and light emitting diode a are located in the same row, and the positioning light emitting diode, power light emitting diode, general inspection button switch, self-inspection button switch and line inspection button switch are located in the same row.

[0039] The present invention also includes a vehicle rotation sensor detection method, which is based on the vehicle rotation sensor detection device described above and includes the following steps:

[0040] S1: Perform device self-test; press the general test button switch, the system is powered on, the power LED lights up, press the self-test button switch, if LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if any LED is not lit, the corresponding circuit is broken;

[0041] S2: Conduct line inspection; connect the two ends of the cable to be inspected to the general inspection plug and line inspection plug of the device, press the line inspection button switch, if the LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if the LED is not lit, the cable is broken;

[0042] S3: Perform sensor detection; press the general inspection button switch again, the power circuit is disconnected, remove the cable at the line inspection plug, connect it to the sensor to be tested, press the general inspection button switch, power on the system, and the power LED lights up. If it is an in-situ detection, you need to manually rotate the rotating frame. If it is a detection after disassembly, rotate the rotating sensor gear one circle and observe LED e, LED d, LED c, LED b, LED a and positioning LED. If each LED is on and off, the sensor is normal. If a certain LED is on or off, the circuit corresponding to the LED is faulty; generally, the light-emitting tube or receiving tube should be replaced.

[0043] S4: Position the sensor; if the sensor is to be disassembled for testing, the sensor needs to be installed: rotate the sensor gear until the positioning LED lights up, keep the gear in place, and fix the sensor. During the fixing process, the positioning LED is always on.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for detecting a vehicle rotation sensor, characterized in that: The method is implemented based on a vehicle rotation sensor detection device, which includes a vehicle rotation sensor detection circuit, a shell and a display panel. The vehicle rotation sensor detection circuit is arranged inside the shell, and a display panel is arranged on the upper surface of the shell. The light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode, power light-emitting diode, general inspection button switch, self-inspection button switch and line inspection button switch in the vehicle rotation sensor detection circuit all extend from the inside of the shell to the outside of the display panel, and the general inspection plug and line inspection plug in the vehicle rotation sensor detection circuit are distributed on both sides of the shell; The method comprises the following steps: S1: Perform device self-test; press the general test button switch, the system is powered on, the power LED lights up, press the self-test button switch, if LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if any LED is not lit, the corresponding circuit is broken; S2: Conduct line inspection; connect the two ends of the cable to be inspected to the general inspection plug and line inspection plug of the device, press the line inspection button switch, if the LED e, LED d, LED c, LED b, LED a and positioning LED are all lit, it means that the internal circuit of the device is working normally, if the LED is not lit, the cable is broken; S3: Perform sensor detection; press the general inspection button switch again, disconnect the power circuit, remove the cable at the line inspection plug, connect it to the sensor to be tested, press the general inspection button switch, power on the system, and the power LED lights up. If it is an in-situ detection, you need to manually rotate the rotating frame. If it is a detection after disassembly, rotate the rotating sensor gear for one circle, observe the LED e, LED d, LED c, LED b, LED a and positioning LED. If each LED is on and off, the sensor is normal. If a certain LED is always on or off, the circuit corresponding to the LED is faulty; S4: Position the sensor; if the sensor is to be disassembled for testing, the sensor needs to be installed: rotate the sensor gear until the positioning LED lights up, keep the gear position unchanged, and fix the sensor. During the fixing process, the positioning LED is always in the lighting state; The vehicle rotation sensor detection circuit comprises: a general detection plug, a line detection plug, a plurality of resistors, a plurality of light emitting diodes, a plurality of button switches, two relays and a lithium battery pack; The general inspection plug has a total of 8 pins. Pin 1 is connected to one end of resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, self-test button switch, resistor R7 and the general inspection button switch. The other ends of resistors R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6 and resistor R7 are respectively connected to the anodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode. The cathodes of light-emitting diode e, light-emitting diode d, light-emitting diode c, light-emitting diode b, light-emitting diode a, positioning light-emitting diode and power light-emitting diode are respectively connected to pin 2, pin 3, pin 4, pin 5, pin 6 and pin 7. and pin 8, the other end of the self-check button switch is connected to one end of relay K1 and relay K2, the other end of relay K1 and relay K2 is connected to pin 8, the contact K1.1, contact K1.2 and contact K1.3 on relay K1 are connected to the cathodes of light-emitting diode e, light-emitting diode d and light-emitting diode c respectively, the contacts K2.1, K2.2 and K2.3 on relay K2 are connected to the cathodes of light-emitting diode b, light-emitting diode a and positioning light-emitting diode respectively, the cathode of the power light-emitting diode is connected to pin 8, the other end of the general inspection button switch is connected to one end of the lithium battery pack, the other end of the lithium battery pack is connected to pin 8, and the two ends of the line inspection button switch are respectively connected to pin 8 and the pin of the line inspection plug.

2. The vehicle rotation sensor detection method according to claim 1, characterized in that: The colors of the light emitting diode e, light emitting diode d, light emitting diode c, light emitting diode b and light emitting diode a are red, the color of the positioning light emitting diode is blue, and the color of the power light emitting diode is green.

3. The vehicle rotation sensor detection method according to claim 1, characterized in that: The output voltage of the lithium battery pack is 12V.

4. The vehicle rotation sensor detection method according to claim 1, characterized in that: The light emitting diode e, light emitting diode d, light emitting diode c, light emitting diode b and light emitting diode a are located in the same row, and the positioning light emitting diode, power light emitting diode, general inspection button switch, self-inspection button switch and line inspection button switch are located in the same row.

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