Device and method for detecting performance of sensor matched with aircraft manufacturing equipment

Abstract

The invention belongs to the technical field of aeronautical manufacturing, and discloses a device and a method for detecting the performance of sensors matched with aircraft manufacturing equipment. Therefore, output signals of three sensors matched with aircraft manufacturing equipment, namely a switching value sensor, an analog quantity sensor and a pulse digital sensor, are acquired and detected. The method comprises the following specific operation steps: selecting an aircraft manufacturing equipment matching sensor type and an output type; setting test information of a sensor matched with the aircraft manufacturing equipment; acquiring operation information of a sensor matched with the aircraft manufacturing equipment; and calculating electrical performance parameters of the sensor matched with the aircraft manufacturing equipment according to the operation information, and comparing the electrical performance parameters with test information set by the sensor matched with the aircraft manufacturing equipment to judge whether the sensor is qualified or not. According to the invention, advanced maintenance of the sensor and normal operation of aircraft manufacturing equipment are facilitated, and the efficiency of production tasks is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of sensor detection in aviation manufacturing, and specifically relates to a sensor performance detection device and method for aircraft manufacturing equipment, and more particularly to a device and method for detecting a variety of sensors, including switch sensors, analog sensors, and pulse digital sensors. Background Art

[0002] Aircraft manufacturing equipment is responsible for the manufacturing or assembly of the company's key aircraft parts and components, and is a key link in the production process. Various types of aircraft manufacturing equipment contain a large number of detection sensors, such as temperature and humidity sensors, pressure sensors, displacement sensors, speed sensors, distance sensors, etc. Sensors are used to control various parameters in the production process to keep the equipment in a normal or optimal state.

[0003] Sensors play an important role in aircraft manufacturing equipment. However, during the production process, sensors may become unstable or damaged, which will cause the equipment to be unable to be used normally, affecting the smooth progress of aircraft production tasks and bringing safety risks to equipment and personnel. When a sensor is damaged, the corresponding replacement requires extremely high requirements for the reserve quantity and delivery time of components, reducing the efficiency of production tasks and even causing safety accidents. Summary of the invention

[0004] The present invention application proposes a sensor performance detection device and method for aircraft manufacturing equipment, which can realize the pre-detection and maintenance of multiple types of sensors during regular maintenance.

[0005] In order to achieve the above invention objectives, the technical solutions adopted in this application are as follows:

[0006] A sensor performance detection device for aircraft manufacturing equipment includes an electric control box for placing components, a touch screen and a set of performance detection control devices, wherein the control device includes:

[0007] A PLC controller calculates the electrical performance parameters of the sensor according to the collected output information, and compares the calculated electrical performance parameters with theoretical parameters;

[0008] A digital input module to collect switch signals from sensors supporting aircraft manufacturing equipment;

[0009] An analog input module collects analog signals from sensors supporting aircraft manufacturing equipment;

[0010] A high-speed counting module to collect digital pulse signals from sensors supporting aircraft manufacturing equipment;

[0011] A signal acquisition terminal is connected to each acquisition module of the sensors supporting the aircraft manufacturing equipment.

[0012] As a further solution of the present invention: the specific wiring position of the signal acquisition terminal has been divided into areas during the design, so that various types of sensors can be connected to the above-mentioned device through the terminal to collect output signals. A corresponding interface position is also reserved on the outside of the device, and there is a corresponding indication of the wiring position in the touch screen function detection interface.

[0013] As a further solution of the present invention: the touch screen is connected to the PLC controller via a communication line, and is used for inputting test information, displaying current collected data and comparison results of the controller, and can switch between different types of sensor function test interfaces.

[0014] As a further solution of the present invention: the switch quantity signal is a fixed voltage signal value generated by the operation of a switch quantity sensor supporting aircraft manufacturing equipment;

[0015] The analog signal is a 0-5V voltage value, a 4-20mA current value and a 0-20mA current value generated by the operation of the analog sensor supporting the aircraft manufacturing equipment;

[0016] The digital pulse type quantity signal is a variety of signals such as open collector output, voltage output, line drive output and push-pull output generated by the operation of digital pulse type sensors supporting aircraft manufacturing equipment.

[0017] As a further solution of the present invention: it also includes a power supply module for providing working power to the sensor performance detection device supporting the machine manufacturing equipment.

[0018] As a further solution of the present invention: the test information includes the number of tests, the theoretical output voltage value, current value or pulse count value of the sensor.

[0019] A method for detecting performance of a sensor for aircraft manufacturing equipment comprises the following steps:

[0020] Select the sensor type and output type for aircraft manufacturing equipment;

[0021] Set the test information of the sensors supporting the aircraft manufacturing equipment;

[0022] Collect output signals from sensors supporting aircraft manufacturing equipment;

[0023] The electrical performance parameters of the aircraft manufacturing equipment supporting sensor are calculated based on the collected information, compared with the theoretical output information of the aircraft manufacturing equipment supporting sensor setting, and whether it is qualified is judged, and finally relevant information is displayed in the touch screen test interface.

[0024] As a further solution of the present invention: the types of sensors for detection are divided into three types: switch quantity sensor, analog quantity sensor and pulse digital sensor;

[0025] Switching sensors include photoelectric switches, proximity switches, and mechanical switches. The output types of different types of switching sensors are divided into PNP, NPN, and relay output; analog sensors include distance sensors, pressure sensors, and temperature sensors. The output types of different types of analog sensors are voltage and current; pulse digital sensors include incremental encoders and absolute encoders. The output signal principles and value recording methods of different types of encoders are inconsistent.

[0026] As a further solution of the present invention: the actual triggering times of the output signal of the switch quantity sensor are collected, and the collection times are compared with the set test times to determine whether the electrical performance of the current sensor is qualified;

[0027] The actual voltage signal value or current signal value of the analog sensor output signal is collected, multiple sampling values ​​are combined with the theoretical output value for calculation, and compared with the reference error to determine whether the electrical performance of the current sensor is qualified;

[0028] The actual pulse count output by the pulse digital sensor is collected, multiple sampling values ​​are combined with the theoretical output value for calculation, and compared with the reference error to determine whether the electrical performance of the current sensor is qualified.

[0029] As a further solution of the present invention: the switch quantity sensor test interface in the touch screen has an indicator light that flashes when a signal is triggered; in the analog quantity sensor test interface, a curve chart is used to display the actual voltage or current value collected in real time; and in the pulse digital sensor test interface, a zero point indication is provided for the initial counting position of the encoder.

[0030] As a further solution of the present invention: if the performance of the sensor supporting the aircraft manufacturing equipment is qualified, the text display box of the touch screen will display qualified; if the performance of the sensor supporting the aircraft manufacturing equipment is unqualified, the text display box of the touch screen will display unqualified.

[0031] Compared with the prior art, the beneficial effects of this application are:

[0032] 1. This application can test whether the electrical performance of different sensors is qualified. It has high test efficiency and a wide range of applications. It is conducive to the pre-emptive maintenance of sensors and ensures the efficiency of production tasks.

[0033] 2. This application can detect a variety of sensors, including switch sensors, analog sensors and pulse digital sensors.

[0034] The present application is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0036] In the attached picture:

[0037] Figure 1 This is a schematic diagram of the sensor performance detection device for aircraft manufacturing equipment of the present invention;

[0038] Figure 2 It is a schematic diagram of the electrical principle of the present invention;

[0039] Figure 3 It is a schematic diagram of the hardware structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the operation panel of the present invention;

[0041] Figure 5 The present invention is implemented in the flow chart of the operation.

[0042] In the figure: 1. Operation panel; 2. Touch screen; 3. System start knob; 4. System start indicator light; 5. Partition; 6. Box; 7 / 8. 220V power supply terminal; 9. Air switch; 10. 24V DC power supply; 11 / 12. 24V power supply terminal; 13. PLC power module; 14. PLC controller; 15. Digital input module; 16. Analog input module; 17. High-speed counting input module; 18 / 19. Communication network port; 20. Communication cable; 21 Signal acquisition terminal. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] First, see Appendix Figure 1-4 The present invention provides a sensor performance detection device for aircraft manufacturing equipment, which includes a box body 6, an operation panel 1, a box body partition 5, and an electrical component mounting plate. The electrical component mounting plate is fixed inside the box body 6 and under the box body partition 5. The operation panel 1 is embedded with a touch screen 2, a power start knob 3, and a system start indicator light 4.

[0045] After connecting the 220VAC power supply to the power input terminals 7 and 8 of the device, manually pull in the air switch 9, and turn on the system start knob switch 3 to complete the overall system startup and power-on of the device. When the system starts, the signal indicator light 4 lights up to prompt. After the startup is completed, the touch screen 2, the PLC controller 14 and its related input and output modules all work normally.

[0046] Second, see Appendix Figure 5 The present invention provides a method for detecting the performance of a sensor for aircraft manufacturing equipment, which comprises the following steps:

[0047] 1. Switch quantity sensor function test: Select the test switch quantity sensor in the main interface of touch screen 2, enter the sensor signal output selection interface, select the corresponding sensor name and signal output type in the interface, click the test button to enter the switch function test interface.

[0048] On the left side of the function detection interface, there are a test start button, an output result button, and a test number input box, and on the right side of the interface, there are a signal response indicator light and a test result text box. Open the device partition 5 according to the interface prompt information, connect the sensor to be tested at the signal acquisition terminal 21 wiring area P1, P2 or P3, and click the test start button after completion. The button changes from yellow to green, indicating that the function detection system has been enabled. Then enter the theoretical number of times and manually trigger the switch. The system automatically collects the signal response times, and the signal indicator light flashes during the collection process.

[0049] After the signal acquisition is completed, the program compares the theoretical test times of the signal and the actual trigger value. The judgment method is: when the theoretical number X = the actual trigger number Y, the output is that the sensor function is normal. When the actual trigger number Y < the theoretical number X, the output is that the sensor function is abnormal. Press the output result button to display the final evaluation opinion and result in the text box.

[0050] 2. Analog sensor function test: Select the analog sensor test on the main interface of touch screen 2, enter the sensor signal output selection interface, select the corresponding sensor name (distance sensor, pressure sensor, temperature sensor) and signal output type (0-5V voltage output type, 4-20mA current output type, 0-20mA current output type) in the interface, click the test button to enter the sensor function test interface.

[0051] On the left side of the function detection interface, there are a test start button, an output result button, a confirmation record button, 5 test value input boxes, an actual sampling value display box, and a deviation rolling average value display box. On the right side of the interface, there are a signal input curve chart and a test result text box. Open the device partition 5 according to the interface prompt information, and connect the sensor to be tested at the signal acquisition terminal 21 wiring area P4, P5 or P6. After completion, click the test start button. The button changes from yellow to green, indicating that the function detection system has been enabled. After entering the first theoretical value and manually triggering the sensor, the system has automatically sampled the output signal. Click the confirmation record button to save the result this time, and repeat this operation 4 times later. During the acquisition process, the value display box on the left will display the current actual sampling result, and the curve chart on the right will display the 5 signal sampling curves in real time.

[0052] After the five signal acquisitions are completed, the program compares the actual values ​​collected five times with the theoretical values. The judgment method is: theoretical value X1-actual value Y1=error value Z1; theoretical value X2-actual value Y2=error value Z2; theoretical value X3-actual value Y3=error value Z3..., and calculates five groups of error values ​​Z1, Z2, Z3, Z4, Z5 in turn, and converts all error values ​​into absolute values. The five groups of error values ​​are processed using the rolling average data processing method: (error value Z1 + error value Z2 + error value Z3) / 3 = error mean A1; (error value Z2 + error value Z3 + error value Z4) / 3 = error mean A2; (error value Z3 + error value Z4 + error value Z5) / 3 = error mean A3. If the error mean A1 < error limit, A2 < error limit, and A3 < error limit, then the output is that the sensor function is normal. In other cases, the output is that the sensor function is abnormal. Press the output result button to display the final evaluation opinion and result in the text box.

[0053] 3. Pulse digital sensor function test: Select the test pulse digital sensor in the main interface of touch screen 2, enter the sensor signal output selection interface, select the corresponding sensor name (rotary encoder, wire encoder) and signal output type (incremental, absolute value) in the interface, click the test button to enter the sensor function test interface.

[0054] On the left side of the incremental encoder function detection interface, there are a test start button, an output result button, a pulse number input box, a sampling pulse display box, and a deviation rolling average display box. On the right side of the interface, there are signal zero-point response and test result text boxes. Open the device partition 5 according to the interface prompt information, and connect the sensor to be tested at the signal acquisition terminal 21 wiring area P7. After completion, click the test start button. The button changes from yellow to green, indicating that the function detection system has been enabled. Enter the theoretical pulse number in the pulse number input box, and manually rotate the encoder. The system will automatically start sampling the current encoder rotation number and the number of pulses issued per circle. After the actual output pulse number of 5 circles is automatically collected, the program compares the actual values ​​collected five times with the theoretical values. The judgment method is: theoretical value X1-actual value Y1=error value Z1; theoretical value X2-actual value Y2=error value Z2; theoretical value X3-actual value Y3=error value Z3..., and 5 groups of error values ​​Z1, Z2, Z3, Z4, Z5 are calculated in turn, and all error values ​​are processed as absolute values. The five groups of error values ​​are processed by the rolling average data processing method: (error value Z1 + error value Z2 + error value Z3) / 3 = error mean A1; (error value Z2 + error value Z3 + error value Z4) / 3 = error mean A2; (error value Z3 + error value Z4 + error value Z5) / 3 = error mean A3. If the error mean A1 < error limit, A2 < error limit, and A3 < error limit, then the output is that the sensor function is normal. In other cases, the output is that the sensor function is abnormal. Press the output result button to display the final evaluation opinion and result in the text box. Press the output result button to display the final evaluation opinion and result in the text box.

[0055] On the left side of the absolute encoder function detection interface, there are a test start button, a reset button, an actual position display box, and a sampling pulse display box. A signal zero-crossing indicator light is set on the right side of the interface, indicating that the current encoder starts counting with a zero-point response as the initial value. Open the device partition 5 according to the interface prompt information, and connect the sensor to be tested at the signal acquisition terminal 21 wiring area P8. After completion, click the test start button. The button changes from yellow to green, indicating that the function detection system has been enabled. Manually rotate the encoder. After the zero-crossing indicator light turns green, the system will automatically start sampling the pulse count value emitted by the current encoder, and display the current count in the sampling pulse display box. The count value is also processed internally by the program, converted into the corresponding actual position value, and displayed in the actual position display box. Click the reset button to reset the current position value when the encoder is rotated to any position, and recount and redisplay the position value from that position.

[0056] So far, the purpose of the present invention has been achieved.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sensor performance detection device for aircraft manufacturing equipment, including an electric control box for placing components, characterized in that: It also includes a touch screen and a set of performance detection control devices, wherein the control device includes: A PLC controller calculates the electrical performance parameters of the sensor according to the collected output information, and compares the calculated electrical performance parameters with the theoretical parameters; A digital input module to collect switch signals from sensors supporting aircraft manufacturing equipment; An analog input module collects analog signals from sensors supporting aircraft manufacturing equipment; A high-speed counting module to collect digital pulse signals from sensors supporting aircraft manufacturing equipment; A signal acquisition terminal is connected to each acquisition module of the sensors supporting the aircraft manufacturing equipment.

2. The device and method for detecting performance of sensors for aircraft manufacturing equipment according to claim 1, characterized in that: The specific wiring positions of the signal acquisition terminals have been divided into areas during the design, so that various types of sensors can be connected to the above-mentioned device through the terminals to collect output signals. Corresponding interface positions are also reserved on the outside of the device, and corresponding indications of the wiring positions are given in the touch screen function detection interface.

3. The device and method for detecting performance of sensors for aircraft manufacturing equipment according to claim 2, characterized in that: The touch screen is connected to the PLC controller via a communication line and is used for inputting test information, displaying current collected data and comparison results of the controller, and can switch between different types of sensor function test interfaces.

4. The device and method for detecting performance of sensors for aircraft manufacturing equipment according to claim 3, characterized in that: The switch quantity signal is a fixed voltage signal value generated by the operation of the switch quantity sensor of the aircraft manufacturing equipment; The analog signal is a 0-5V voltage value, a 4-20mA current value and a 0-20mA current value generated by the operation of the analog sensor of the aircraft manufacturing equipment; The digital pulse type quantity signal is a variety of signals such as open collector output, voltage output, line drive output and push-pull output generated by the operation of digital pulse type sensors supporting aircraft manufacturing equipment.

5. The device and method for detecting performance of sensors for aircraft manufacturing equipment according to claim 4, characterized in that: It also includes a power supply module for providing working power to the sensor performance detection device supporting the machine manufacturing equipment.

6. The device and method for detecting performance of sensors for aircraft manufacturing equipment according to claim 5, characterized in that: The test information includes the number of tests, the sensor theoretical output voltage value, current value or pulse count value.

7. A method for detecting the performance of sensors for aircraft manufacturing equipment, characterized in that: The steps include: Select the sensor type and output type for aircraft manufacturing equipment; Set the test information of the sensors supporting the aircraft manufacturing equipment; Collect output signals from sensors supporting aircraft manufacturing equipment; The electrical performance parameters of the aircraft manufacturing equipment supporting sensor are calculated based on the collected information, compared with the theoretical output information of the aircraft manufacturing equipment supporting sensor setting, and whether it is qualified is judged, and finally relevant information is displayed in the touch screen test interface.

8. The method for detecting the performance of sensors for aircraft manufacturing equipment according to claim 7, characterized in that: The sensor types for the detection are divided into three types: switch quantity sensor, analog quantity sensor and pulse digital sensor; Switching sensors include photoelectric switches, proximity switches, and mechanical switches. The output types of different types of switching sensors are divided into PNP, NPN, and relay output; analog sensors include distance sensors, pressure sensors, and temperature sensors. The output types of different types of analog sensors are voltage and current; pulse digital sensors include incremental encoders and absolute encoders. The output signal principles and value recording methods of different types of encoders are inconsistent.

9. The method for detecting the performance of sensors for aircraft manufacturing equipment according to claim 8, characterized in that: The actual triggering times of the output signal of the switch quantity sensor are collected, and the collection times are compared with the set test times to determine whether the electrical performance of the current sensor is qualified; The actual voltage signal value or current signal value of the analog sensor output signal is collected, multiple sampling values ​​are combined with the theoretical output value for calculation, and compared with the reference error to determine whether the electrical performance of the current sensor is qualified; The actual pulse count output by the pulse digital sensor is collected, multiple sampling values ​​are combined with the theoretical output value for calculation, and compared with the reference error to determine whether the electrical performance of the current sensor is qualified.

10. The method for detecting the performance of sensors for aircraft manufacturing equipment according to claim 9, characterized in that: The switch quantity sensor test interface in the touch screen has an indicator light color flashing when the signal is triggered; the actual voltage value or current value collected in the analog quantity sensor test interface is displayed in real time with a curve graph; the initial counting position of the encoder in the pulse digital sensor test interface is indicated by a zero point; If the performance of the sensor supporting the aircraft manufacturing equipment is qualified, the text display box on the touch screen will display qualified; if the performance of the sensor supporting the aircraft manufacturing equipment is unqualified, the text display box on the touch screen will display unqualified.

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