360-degree angle measurement method of plastic guide angle sensor

Abstract

A 360-degree range angle measurement method for a plastic conductive angle sensor, wherein an outer positive electrode and an outer negative electrode are arranged at 180 degrees on the outer resistance track ring of the plastic conductive potentiometer, and an inner positive electrode and an inner negative electrode are arranged at 180 degrees on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90 degrees, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal; a quadrant identification signal and an angle output signal are defined; according to the quadrant identification signal, the 360-degree outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D; after determining the quadrant where the brush is located according to the quadrant identification signal, a voltage signal of 1 / 4aV to 3 / 4aV output by another resistance track ring is used as the angle output signal in the quadrant; the angle value of the brush is determined according to the quadrant and the corresponding angle output signal. The present invention simplifies the measurement process, realizes 360-degree full-range measurement, and breaks through the limitations of the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of angle measurement, and in particular relates to a 360-degree range angle measurement method of a plastic guide angle sensor. Background Art

[0002] Precision plastic sensor is a sensor based on the contact potentiometer principle. It uses ultra-wear-resistant conductive plastic material as a conductive rail and achieves ultra-high precision angle or linear displacement measurement through laser engraving. It has the advantages of high reliability and strong anti-interference. It is widely used in aerospace, military industry, ships, self-driving cars, precision machine tools, high-end medical equipment, and automation equipment that requires accurate measurement of angles or linear positions.

[0003] With the increase in the application environments of conductive plastic angle sensors, many application environments need to achieve 360° full circle angle measurement. The precision conductive plastic angle sensor is based on the principle of potentiometer. The conductive rail needs to have two electrodes, high and low. The active end slides on the conductive rail to output a voltage that changes in direct proportion to the angle, thereby achieving angle measurement. Because the two electrodes cannot overlap, 360° full circle angle measurement cannot be achieved. At present, the precision conductive plastic angle sensor can only achieve an effective range of 340° at most. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a 360-degree range angle measurement method of a plastic angle sensor with reasonable design, simple operation and small error.

[0005] The technical solution adopted to solve the above technical problems is: a 360-degree range angle measurement method of a plastic guide angle sensor, comprising the following steps:

[0006] Step 1. Arrange an outer positive electrode and an outer negative electrode at 180° on the outer resistance track ring of the plastic conductive potentiometer, and arrange an inner positive electrode and an inner negative electrode at 180° on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90°, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal, which is aV;

[0007] The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position;

[0008] Step 2. Define quadrant identification signal and angle output signal;

[0009] The voltage signals of 0 to 1 / 4aV and 3 / 4aV to aV outputted by each resistance track ring are used as quadrant identification signals;

[0010] The voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal;

[0011] Step 3. According to the quadrant identification signal, the 360° outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D;

[0012] Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 1 / 4aV to 3 / 4aV voltage signal output by the other resistance track ring as the angle output signal in the quadrant;

[0013] Step 5. Using the voltage signal which is proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal.

[0014] As a preferred technical solution, the quadrants are divided into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal, specifically: the position points of the outer resistance track ring and the inner resistance ring where the output voltage signal is 3 / 4aV are set as 0° and 360°, the voltage signal area where the outer resistance track ring outputs 3 / 4aV~aV is used as quadrant A, that is, 0°~90°, the voltage signal area where the inner resistance track ring outputs 0~1 / 4aV is used as quadrant B, that is, 90°~180°, the voltage signal area where the outer resistance track ring outputs 0~1 / 4aV is used as quadrant C, that is, 180°~270°, and the voltage signal area where the inner resistance track ring outputs 3 / 4aV~aV is used as quadrant D, that is, 270°~360°;

[0015] Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation:

[0016] A quadrant:

[0017] Quadrant B:

[0018] Quadrant C:

[0019] Quadrant D:

[0020] Where x is the angle of the brush and y is the voltage of the angle output signal.

[0021] As a preferred technical solution, the quadrants are divided into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal, specifically: the position point where the output voltage signal of the outer resistance track ring is 3 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV is set as 0° and 360°, the voltage signal area of ​​the inner resistance track ring 0-1 / 4aV is used as quadrant A, that is, 0°-90°, the voltage signal area of ​​the outer resistance track ring 0-1 / 4aV is used as quadrant B, that is, 90°-180°, the voltage signal area of ​​the inner resistance track ring 3 / 4aV-aV is used as quadrant C, that is, 180°-270°, and the voltage signal area of ​​the outer resistance track ring 3 / 4aV-aV is used as quadrant D, that is, 270°-360°;

[0022] Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation:

[0023] A quadrant:

[0024] Quadrant B:

[0025] Quadrant C:

[0026] Quadrant D:

[0027] Where x is the angle of the brush and y is the voltage of the angle output signal.

[0028] As a preferred technical solution, the quadrants are divided into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal, specifically: the position point where the output voltage signal of the outer resistance track ring is 1 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV is set as 0° and 360°, the voltage signal area of ​​the outer resistance track ring 0~1 / 4aV is used as quadrant A, that is, 0°~90°, the voltage signal area of ​​the inner resistance track ring 3 / 4aV~aV is used as quadrant B, that is, 90°~180°, the voltage signal area of ​​the outer resistance track ring 3 / 4aV~aV is used as quadrant C, that is, 180°~270°, and the voltage signal area of ​​the inner resistance track ring 0~1 / 4aV is used as quadrant D, that is, 270°~360°;

[0029] Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation:

[0030] A quadrant:

[0031] Quadrant B:

[0032] Quadrant C:

[0033] Quadrant D:

[0034] Where x is the angle of the brush and y is the voltage of the angle output signal.

[0035] As a preferred technical solution, the quadrants are divided into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal, specifically: the position point where the output voltage signal of the outer resistance track ring is 1 / 4aV and the output voltage signal of the inner resistance ring is 3 / 4aV is set as 0° and 360°, the voltage signal area of ​​the inner resistance track ring 3 / 4aV~aV is used as quadrant A, that is, 0°~90°, the voltage signal area of ​​the outer resistance track ring 3 / 4aV~aV is used as quadrant B, that is, 90°~180°, the voltage signal area of ​​the inner resistance track ring 0~1 / 4aV is used as quadrant C, that is, 180°~270°, and the voltage signal area of ​​the outer resistance track ring 0~1 / 4aV is used as quadrant D, that is, 270°~360°;

[0036] Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation:

[0037] A quadrant:

[0038] Quadrant B:

[0039] Quadrant C:

[0040] Quadrant D:

[0041] Where x is the angle of the brush and y is the voltage of the angle output signal.

[0042] The beneficial effects of the present invention are as follows:

[0043] The present invention simplifies the measurement process by defining quadrant identification signals and angle output signals, allowing users to quickly and accurately obtain angle measurement results, achieving 360° full-range measurement and breaking through the limitations of the prior art.

[0044] The present invention realizes 360° full-range angle measurement based on the plastic-conducting potentiometer, has low cost and strong market competitiveness, meets the conditions for industrial mass production, and realizes the national production requirements of high-precision sensors. Since the plastic-conducting potentiometer has the characteristics of high reliability and strong anti-interference, the present invention is suitable for a variety of application environments such as aerospace, military industry, ships, self-driving cars, precision machine tools, high-end medical equipment, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the distribution of electrodes of the plastic-conducting potentiometer of the present invention.

[0046] Figure 2 It is a schematic diagram of quadrant division of Example 1.

[0047] Figure 3 This is a schematic diagram of quadrant division in Example 2.

[0048] Figure 4 It is a schematic diagram of quadrant division of Example 3.

[0049] Figure 5 This is a schematic diagram of quadrant division in Example 4.

[0050] Among them: outer resistance track ring 1, inner resistance track ring 2, inner negative electrode 3, outer negative electrode 4, inner positive electrode 5, outer positive electrode 6. DETAILED DESCRIPTION

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the present invention is not limited to the following embodiments. Example 1

[0052] A 360-degree range angle measurement method of a plastic guide angle sensor comprises the following steps:

[0053] Step 1. Figure 1 , an outer positive electrode 6 and an outer negative electrode 4 are arranged at 180° on the outer resistance track ring 1 of the conductive potentiometer, and an inner positive electrode 5 and an inner negative electrode 3 are arranged at 180° on the inner resistance track ring 2, the angle between the outer positive electrode 6 and the inner positive electrode 5 is 90°, and the voltage value of the outer positive electrode 6 and the inner positive electrode 5 is equal to aV, and aV=12V in this embodiment;

[0054] The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position;

[0055] Step 2. Define quadrant identification signal and angle output signal;

[0056] The angle voltage signals of 0 to 1 / 4 aV and 3 / 4 aV to aV outputted by each resistance track ring are used as quadrant identification signals, which are 0 to 3V and 9 to 12V in this embodiment;

[0057] The angle voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal, which is 3V to 9V in this embodiment;

[0058] Step 3. Divide the 360° outer resistance track ring 1 and the inner resistance track ring 2 into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal. Specifically, the position points where the output voltage signal of the outer resistance track ring and the inner resistance ring is 3 / 4aV, i.e., 9V, are set as 0° and 360°, the 3 / 4aV~aV, i.e., 9V~12V voltage signal area of ​​the outer resistance track ring 1 is set as quadrant A, the 0~1 / 4aV, i.e., 0~3V voltage signal area of ​​the inner resistance track ring 2 is set as quadrant B, the 0~1 / 4aV, i.e., 0~3V voltage signal area of ​​the outer resistance track ring 1 is set as quadrant C, and the 3 / 4aV~aV, i.e., 9V~12V voltage signal area of ​​the inner resistance track ring 2 is set as quadrant D, as shown in FIG. Figure 2 Quadrant A is the area from 0° to 90°, quadrant B is the area from 90° to 180°, quadrant C is the area from 180° to 270°, and quadrant D is the area from 270° to 360°.

[0059] Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 3V to 9V voltage signal output by the other resistance track ring as the angle output signal in the quadrant;

[0060] Step 5. Using the voltage signal being proportional to the angle, determine the angle value of the brush according to the quadrant and the corresponding angle output signal, specifically:

[0061] A quadrant:

[0062] Quadrant B:

[0063] Quadrant C:

[0064] Quadrant D:

[0065] Where x is the angle of the brush and y is the voltage of the angle output signal.

[0066] For example: the output voltage of the outer resistance track ring 1 is 12V, and the output voltage of the inner resistance track ring 2 is 6V. Since 12V is in the range of 9V to 12V and 6V is in the range of 3V to 9V, the output voltage of the outer resistance track ring 1 is used as the quadrant identification signal, and the output voltage of the inner resistance track ring 2 is used as the angle output signal. Since the output voltage of the outer resistance track ring 1 of 12V meets the judgment condition of quadrant A, it is determined that the brush is in quadrant A. Substitute the 6V voltage signal output by the inner resistance track ring 2 into the formula for determining the angle value of the brush in quadrant A, and the angle value of the brush x=45° is obtained. Example 2

[0067] In the 360-degree range angle measurement method of the plastic angle sensor in this embodiment, steps 1 and 2 are the same as those in embodiment 1.

[0068] Step 3. Divide the 360° outer resistance track ring 1 and the inner resistance track ring 2 into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal. Specifically, the position points where the output voltage signal of the outer resistance track ring is 3 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV are set as 0° and 360°, the 0-1 / 4aV voltage signal area of ​​the inner resistance track ring is used as quadrant A, i.e., 0°-90°, the 0-1 / 4aV voltage signal area of ​​the outer resistance track ring is used as quadrant B, i.e., 90°-180°, the 3 / 4aV-aV voltage signal area of ​​the inner resistance track ring 2 is used as quadrant C, i.e., 180°-270°, and the 3 / 4aV-aV voltage signal area of ​​the outer resistance track ring 1 is used as quadrant D, i.e., 270°-360°. Figure 3 .

[0069] Step 4. Collect the angle voltage signals output by the two resistor track rings, determine the quadrant in which the brush is located according to the quadrant identification signal, and use the 3V to 9V voltage signal output by the other resistor track ring as the angle output signal in that quadrant.

[0070] Step 5. Using the voltage signal being proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal, and use the following formula to determine the angular position of the brush:

[0071] A quadrant:

[0072] Quadrant B:

[0073] Quadrant C:

[0074] Quadrant D:

[0075] Where x is the angle of the brush and y is the voltage of the angle output signal. Example 3

[0076] In the 360-degree range angle measurement method of the plastic angle sensor in this embodiment, steps 1 and 2 are the same as those in embodiment 1.

[0077] Step 3. The quadrants are divided into quadrant A, quadrant B, quadrant C, and quadrant D according to the quadrant identification signal. Specifically, the position points where the output voltage signal of the outer resistance track ring 1 is 1 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV are set as 0° and 360°, the 0-1 / 4aV voltage signal area of ​​the outer resistance track ring 1 is used as quadrant A, i.e., 0°-90°, the 3 / 4aV-aV voltage signal area of ​​the inner resistance track ring 2 is used as quadrant B, i.e., 90°-180°, the 3 / 4aV-aV voltage signal area of ​​the outer resistance track ring 1 is used as quadrant C, i.e., 180°-270°, and the 0-1 / 4aV voltage signal area of ​​the inner resistance track ring 2 is used as quadrant D, i.e., 270°-360°. Figure 4 ;

[0078] Step 4. Collect the angle voltage signals output by the two resistor track rings, determine the quadrant in which the brush is located according to the quadrant identification signal, and use the 3V to 9V voltage signal output by the other resistor track ring as the angle output signal in that quadrant.

[0079] Step 5. Using the voltage signal being proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal, and use the following formula to determine the angular position of the brush:

[0080] A quadrant:

[0081] Quadrant B:

[0082] Quadrant C:

[0083] Quadrant D:

[0084] Where x is the angle of the brush and y is the voltage of the angle output signal. Example 4

[0085] In the 360-degree range angle measurement method of the plastic angle sensor in this embodiment, steps 1 and 2 are the same as those in embodiment 1.

[0086] According to the quadrant identification signal, it is divided into quadrant A, quadrant B, quadrant C, and quadrant D. Specifically, the position point where the output voltage signal of the outer resistance track ring 1 is 1 / 4aV and the output voltage signal of the inner resistance ring is 3 / 4aV is set as 0° and 360°, the 3 / 4aV~aV voltage signal area of ​​the inner resistance track ring 2 is taken as quadrant A, that is, 0°~90°, the 3 / 4aV~aV voltage signal area of ​​the outer resistance track ring 1 is taken as quadrant B, that is, 90°~180°, the 0~1 / 4aV voltage signal area of ​​the inner resistance track ring 2 is taken as quadrant C, that is, 180°~270°, and the 0~1 / 4aV voltage signal area of ​​the outer resistance track ring 1 is taken as quadrant D, that is, 270°~360°. Figure 5 ;

[0087] Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 3V to 9V voltage signal output by the other resistance track ring as the angle output signal in the quadrant;

[0088] Step 5. Using the voltage signal being proportional to the angle, determine the angle value of the brush based on the angle output signal, specifically:

[0089] A quadrant:

[0090] Quadrant B:

[0091] Quadrant C:

[0092] Quadrant D:

[0093] Where x is the angle of the brush and y is the voltage of the angle output signal.

Claims

1. A 360-degree range angle measurement method for a plastic angle sensor, characterized in that: The following steps are involved: Step 1. Arrange an outer positive electrode and an outer negative electrode at 180° on the outer resistance track ring of the plastic conductive potentiometer, and arrange an inner positive electrode and an inner negative electrode at 180° on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90°, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal, which is aV; The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position; Step 2. Define quadrant identification signal and angle output signal The voltage signals of 0 to 1 / 4aV and 3 / 4aV to aV outputted by each resistance track ring are used as quadrant identification signals; The voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal; Step 3. According to the quadrant identification signal, the 360° outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D. Specifically, the position points where the outer resistance track ring and the inner resistance ring output the same voltage signal of 3 / 4aV are set as 0° and 360°, the voltage signal area where the outer resistance track ring outputs 3 / 4aV~aV is taken as quadrant A, i.e., 0°~90°, the voltage signal area where the inner resistance track ring outputs 0~1 / 4aV is taken as quadrant B, i.e., 90°~180°, the voltage signal area where the outer resistance track ring outputs 0~1 / 4aV is taken as quadrant C, i.e., 180°~270°, and the voltage signal area where the inner resistance track ring outputs 3 / 4aV~aV is taken as quadrant D, i.e., 270°~360°; Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation: A quadrant: Quadrant B: Quadrant C: Quadrant D: In the formula, x is the angle value of the brush, and y is the voltage value of the angle output signal; Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 1 / 4aV to 3 / 4aV voltage signal output by the other resistance track ring as the angle output signal in the quadrant; Step 5. Using the voltage signal which is proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal.

2. A 360-degree range angle measurement method for a plastic angle sensor, characterized in that: The following steps are involved: Step 1. Arrange an outer positive electrode and an outer negative electrode at 180° on the outer resistance track ring of the plastic conductive potentiometer, and arrange an inner positive electrode and an inner negative electrode at 180° on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90°, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal, which is aV; The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position; Step 2. Define quadrant identification signal and angle output signal The voltage signals of 0 to 1 / 4aV and 3 / 4aV to aV outputted by each resistance track ring are used as quadrant identification signals; The voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal; Step 3. According to the quadrant identification signal, the 360° outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D, specifically: the position point where the output voltage signal of the outer resistance track ring is 3 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV is set as 0° and 360°, the voltage signal area of ​​the inner resistance track ring from 0 to 1 / 4aV is taken as quadrant A, i.e., 0° to 90°, the voltage signal area of ​​the outer resistance track ring from 0 to 1 / 4aV is taken as quadrant B, i.e., 90° to 180°, the voltage signal area of ​​the inner resistance track ring from 3 / 4aV to aV is taken as quadrant C, i.e., 180° to 270°, and the voltage signal area of ​​the outer resistance track ring from 3 / 4aV to aV is taken as quadrant D, i.e., 270° to 360°; Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation: A quadrant: Quadrant B: Quadrant C: Quadrant D: In the formula, x is the angle value of the brush, and y is the voltage value of the angle output signal; Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 1 / 4aV to 3 / 4aV voltage signal output by the other resistance track ring as the angle output signal in the quadrant; Step 5. Using the voltage signal which is proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal.

3. A 360-degree range angle measurement method for a plastic angle sensor, characterized in that: The following steps are involved: Step 1. Arrange an outer positive electrode and an outer negative electrode at 180° on the outer resistance track ring of the plastic conductive potentiometer, and arrange an inner positive electrode and an inner negative electrode at 180° on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90°, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal, which is aV; The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position; Step 2. Define quadrant identification signal and angle output signal The voltage signals of 0 to 1 / 4aV and 3 / 4aV to aV outputted by each resistance track ring are used as quadrant identification signals; The voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal; Step 3. According to the quadrant identification signal, the 360° outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D, specifically: the position point where the output voltage signal of the outer resistance track ring is 1 / 4aV and the output voltage signal of the inner resistance ring is 1 / 4aV is set as 0° and 360°, the voltage signal area of ​​the outer resistance track ring from 0 to 1 / 4aV is taken as quadrant A, i.e., 0° to 90°, the voltage signal area of ​​the inner resistance track ring from 3 / 4aV to aV is taken as quadrant B, i.e., 90° to 180°, the voltage signal area of ​​the outer resistance track ring from 3 / 4aV to aV is taken as quadrant C, i.e., 180° to 270°, and the voltage signal area of ​​the inner resistance track ring from 0 to 1 / 4aV is taken as quadrant D, i.e., 270° to 360°; Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation: A quadrant: Quadrant B: Quadrant C: Quadrant D: In the formula, x is the angle value of the brush, and y is the voltage value of the angle output signal; Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 1 / 4aV to 3 / 4aV voltage signal output by the other resistance track ring as the angle output signal in the quadrant; Step 5. Using the voltage signal which is proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal.

4. A 360-degree range angle measurement method for a plastic angle sensor, characterized in that: The following steps are involved: Step 1. Arrange an outer positive electrode and an outer negative electrode at 180° on the outer resistance track ring of the plastic conductive potentiometer, and arrange an inner positive electrode and an inner negative electrode at 180° on the inner resistance track ring, the angle between the outer positive electrode and the inner positive electrode is 90°, and the voltage values ​​of the outer positive electrode and the inner positive electrode are equal, which is aV; The brush of the plastic-conducting potentiometer is at a certain angle position, and the two resistance track rings respectively output angle voltage signals at the same position; Step 2. Define quadrant identification signal and angle output signal The voltage signals of 0 to 1 / 4aV and 3 / 4aV to aV outputted by each resistance track ring are used as quadrant identification signals; The voltage signal of 1 / 4aV to 3 / 4aV output by each resistance track ring is used as the angle output signal; Step 3. According to the quadrant identification signal, the 360° outer resistance track ring and the inner resistance track ring area are divided into quadrant A, quadrant B, quadrant C, and quadrant D, specifically: the position point where the output voltage signal of the outer resistance track ring is 1 / 4aV and the output voltage signal of the inner resistance ring is 3 / 4aV is set as 0° and 360°, the voltage signal area of ​​the inner resistance track ring 3 / 4aV~aV is taken as quadrant A, that is, 0°~90°, the voltage signal area of ​​the outer resistance track ring 3 / 4aV~aV is taken as quadrant B, that is, 90°~180°, the voltage signal area of ​​the inner resistance track ring 0~1 / 4aV is taken as quadrant C, that is, 180°~270°, and the voltage signal area of ​​the outer resistance track ring 0~1 / 4aV is taken as quadrant D, that is, 270°~360°; Based on the quadrant and the corresponding angular output signal, the angular position of the brush is determined using the following equation: A quadrant: Quadrant B: Quadrant C: Quadrant D: In the formula, x is the angle value of the brush, and y is the voltage value of the angle output signal; Step 4. Collect the angle voltage signals output by the two resistance track rings, determine the quadrant where the brush is located according to the quadrant identification signal, and use the 1 / 4aV to 3 / 4aV voltage signal output by the other resistance track ring as the angle output signal in the quadrant; Step 5. Using the voltage signal which is proportional to the angle, determine the angle value of the brush based on the quadrant and the corresponding angle output signal.

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