CN214470981U - Angle and position calibrating device for handheld angular displacement sensor - Google Patents
Angle and position calibrating device for handheld angular displacement sensor Download PDFInfo
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- CN214470981U CN214470981U CN202023247035.5U CN202023247035U CN214470981U CN 214470981 U CN214470981 U CN 214470981U CN 202023247035 U CN202023247035 U CN 202023247035U CN 214470981 U CN214470981 U CN 214470981U
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Abstract
The utility model relates to an aeroengine angle displacement sensor signal processing technology field specifically discloses a hand-held type angle displacement sensor angular position calibrating device, including CPU core circuit, power supply circuit, 3 way excitation/feedback circuit, AD converting circuit and touch-control flat board, wherein, 3 way excitation/feedback circuit include 3 way angle displacement excitation circuit and 3 way feedback processing circuit, CPU core circuit respectively with the crystal oscillator, go up electric reset circuit, RS422 communication circuit, watchdog circuit, 3 way angle displacement excitation circuit, AD converting circuit and touch-control flat connection, AD converting circuit still with 3 way feedback processing circuit connects. The utility model provides a hand-held type angle displacement sensor angular position calibrating device can promote the efficiency of angle displacement sensor angular position calibration by a wide margin, and the device can realize the automatic save and the real-time analysis of data when realizing the position calibration, and subsequent data of being convenient for is backtraced.
Description
Technical Field
The utility model relates to an aeroengine angle displacement sensor signal processing technology field, more specifically relates to a hand-held type angle displacement sensor angular position calibrating device.
Background
At present, due to the lack of acquisition equipment in an engine assembly field, the installation positions of a fan compressor guide vane sensor, a high-pressure compressor guide vane sensor and a nozzle area sensor cannot be corrected, the sensors need to be transported to a test bed after the engine is assembled, the positions of the sensors are calibrated by using an engine digital electronic controller, and if the positions are not correctly installed, reworking is needed to adjust the positions of the sensors, so that the test progress is influenced.
Disclosure of Invention
The utility model aims at overcoming the not enough of existence among the prior art, provide a hand-held type angle displacement sensor angular position calibrating device, can solve aeroengine angle displacement sensor and at the inconvenient problem of assembly shop angular position calibration, can satisfy the on-the-spot demand of engine assembly, can make things convenient for, fast, accurately calibrate angle displacement sensor's angle, shorten the debugging cycle of engine test run.
As a first aspect of the utility model, a hand-held type angular displacement sensor angular position calibrating device is provided, including CPU core circuit, power supply circuit, 3 way excitation/feedback circuit, AD converting circuit and touch-control flat board, wherein, 3 way excitation/feedback circuit include 3 way angular displacement excitation circuit and 3 way feedback processing circuit, CPU core circuit respectively with the crystal oscillator, go up electric reset circuit, RS422 communication circuit, watchdog circuit, 3 way angular displacement excitation circuit, AD converting circuit and touch-control flat connection, AD converting circuit still with 3 way feedback processing circuit connects, power supply circuit is used for doing CPU core circuit, 3 way excitation/feedback circuit and AD converting circuit supply power.
Further, the 3-path angular displacement excitation circuit is used for outputting an excitation signal to the angular displacement sensor, and the angular displacement sensor starts to work; the 3-path feedback processing circuit is used for receiving the feedback signal output by the angular displacement sensor and processing the feedback signal into a direct current signal which can be collected by the A/D conversion circuit; the A/D conversion circuit is responsible for converting the processed direct current signal into a digital signal and providing the digital signal to the CPU core circuit for collection through a data parallel bus; and the CPU core circuit transmits the acquired data to the touch panel through a USB interface for display and storage.
Further, the 3-way angular displacement excitation circuit comprises an alpha 1 angular displacement excitation circuit, an alpha 2 angular displacement excitation circuit and a D8 angular displacement excitation circuit, the 3-way feedback processing circuit comprises an alpha 1 feedback processing circuit, an alpha 2 feedback processing circuit and a D8 feedback processing circuit, wherein the angular displacement sensor comprises an alpha 1 sensor, an alpha 2 sensor and a D8 sensor, the alpha 1 sensor is an engine fan inlet guide vane sensor, the alpha 2 sensor is a compressor inlet guide vane sensor, and the D8 sensor is a nozzle area sensor.
Further, the CPU core circuit adopts an LPC2468 microcontroller designed based on an ARM7TDMI-S inner core.
Further, the power supply circuit comprises a power supply chip converting 5V into 3.3V, a power supply chip converting 5V into 15V and a power supply chip converting 5V into-15V, wherein the power supply chip converting 5V into 3.3V is used for supplying power to the crystal oscillator, the CPU core circuit, the RS422 communication circuit and the watchdog circuit.
Furthermore, the A/D conversion circuit comprises an RC filter circuit, a multi-way switch, an operational amplifier chip and an A/D conversion chip.
Furthermore, the touch panel is an explosion-proof type strong panel.
Further, each angular displacement excitation circuit includes a CPU chip D1, an analog switch D2, a first operational amplifier chip N1, a first triode N2, a second triode N3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, wherein the CPU chip D1 is connected to the analog switch D2, the analog switch D2 is respectively connected to the first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1 and the second resistor R2, the analog switch D2 is further connected to the positive input terminal of the first operational amplifier chip N1, the negative input terminal of the first operational amplifier chip N1 is connected to the output terminal of the first operational amplifier chip N1, the output terminal of the first operational amplifier chip 46n 1 is connected to the third resistor R3, the third resistor R3 is connected to the base terminal of the fourth resistor R2 and the base of the fourth resistor R4, The base of the second triode N3 is connected, and the emitter of the first triode N2 is connected with the emitter of the second triode N3.
Further, each feedback processing circuit includes a second operational amplifier chip N4, a third operational amplifier chip N5, a fourth operational amplifier chip N6, a fifth operational amplifier chip N7, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourth capacitor C13, a fifth capacitor C13, a sixth capacitor C13, a first diode VD 13, and a second diode VD 13, wherein a positive input terminal of the second operational amplifier chip N13 is connected to the fifth resistor R13, a negative input terminal of the second operational amplifier chip N13 is connected to the seventh resistor R13, an output terminal of the second operational amplifier chip N13 is connected to a positive input terminal of the third operational amplifier chip N13, a negative input terminal of the sixth operational amplifier chip N13 is connected to the first positive input terminal of the first diode N13, and a negative terminal of the first diode VD 13 are respectively connected to the negative input terminal of the first diode VD 13, and the first diode VD 13, A cathode of the second diode VD2 is connected, an anode of the second diode VD2 is connected to a sixth resistor R6 and an eighth resistor R8, the seventh resistor R7 is connected to a ninth resistor R9, the eighth resistor R8 is connected to a negative input terminal of the fourth operational amplifier chip N6, a positive input terminal of the fourth operational amplifier chip N6 is grounded, an output terminal of the fourth operational amplifier chip N6 is connected to a ninth resistor R9 and a tenth resistor R10, the tenth resistor R10 is connected to an eleventh resistor R11 and a fourth capacitor C4, the eleventh resistor R11 is connected to a twelfth resistor R9 and a sixth capacitor C6, the twelfth resistor R12 is connected to a thirteenth resistor R13 and a fifth capacitor C5, the sixth capacitor C6 is connected to a negative input terminal of the fifth operational amplifier chip N7, and a positive input terminal of the fifth operational amplifier N7 is connected to the fourth resistor R13.
The utility model provides a hand-held type angular displacement sensor angular position calibrating device has following advantage: an excitation signal is injected into the angular displacement sensor through the device, and meanwhile, a feedback signal of the angular displacement sensor is received and processed into a direct current signal which can be collected by an A/D conversion circuit; the A/D conversion circuit is responsible for converting processed direct current signals fed back by the sensor into digital signals and providing the digital signals to the CPU core circuit for collection through the data parallel bus, the CPU core circuit transmits the collected data to the touch panel through the USB interface for display and storage, the efficiency of angular position calibration of the angular displacement sensor is greatly improved, the device can realize automatic storage and real-time analysis of the data while realizing the position calibration, and is convenient for subsequent data backtracking; in addition, the device is a handheld flat plate structure, and is convenient to debug and calibrate in an assembly field.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic circuit block diagram of the angular position calibration device of the handheld angular displacement sensor provided by the present invention.
Fig. 2 is a schematic block diagram of a CPU core circuit provided by the present invention.
Fig. 3 is a schematic block diagram of a power supply circuit provided by the present invention.
Fig. 4 is a schematic diagram of a connection relationship between the angular displacement excitation circuit, the angular displacement sensor, the feedback processing circuit and the a/D conversion circuit.
Fig. 5 is a schematic block diagram of the a/D conversion circuit provided by the present invention.
Fig. 6 is a schematic structural diagram of an angular displacement excitation circuit provided by the present invention.
Fig. 7 is a schematic structural diagram of a feedback processing circuit according to the present invention.
Description of reference numerals: 1-a CPU core circuit; 2-a power supply circuit; 3-3 excitation/feedback circuits; a 4-A/D conversion circuit; 5-touch pad.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the specific embodiments, structures, features and effects of the angular position calibration device of the handheld angular displacement sensor according to the present invention with reference to the accompanying drawings and preferred embodiments. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the present embodiment, a hand-held angular displacement sensor angular position calibration device is provided, as shown in figure 1, the angle position calibration device of the hand-held angular displacement sensor comprises a CPU core circuit 1, a power circuit 2, a 3-way excitation/feedback circuit 3, an A/D conversion circuit 4 and a touch panel 5, wherein, the 3-path exciting/feedback circuit 3 comprises a 3-path angular displacement exciting circuit and a 3-path feedback processing circuit, the CPU core circuit 1 is respectively connected with a crystal oscillator, a power-on reset circuit, an RS422 communication circuit, a watchdog circuit, a 3-path angular displacement exciting circuit, an A/D conversion circuit 4 and a touch panel 5, the A/D conversion circuit 4 is also connected with the 3-path feedback processing circuit, and the power supply circuit 2 is used for supplying power to the CPU core circuit 1, the 3-path excitation/feedback circuit 3 and the A/D conversion circuit 4.
Preferably, as shown in FIG. 2, the CPU core circuit 1 adopts an LPC2468 microcontroller based on ARM7TDMI-S kernel design; in addition, the CPU core circuit 1 comprises 512kB chip Flash program memory, 98kB chip SRAM, USB2.0 full speed dual port device/host/OTG controller, with chip PHY and related DMA controller, 1 10/100 Ethernet Media Access Controller (MAC), 4 UARTs, 2-way controller local area network (CAN) channel, 1 SPI interface, 2 Synchronous Serial Port (SSP), 3I 2C interface, 1I 2S interface, SD/MMC memory card interface, 4 universal timer/counter, 2 PWM/timer module, watchdog timer (WDT) and other external functions, to satisfy the function requirements of the system; a path of UART of the CPU core circuit 1 is led out, RS422 communication is realized through an external RS422 communication circuit (comprising a MAX3490EESA chip), and the UART can be communicated with a computer through the RS422 communication circuit and is used for debugging and troubleshooting; in order to ensure the normal work of the kernel of the CPU core circuit 1, a power-on reset circuit is arranged on a reset pin of the CPU core circuit 1; the external crystal oscillator outputs a clock frequency of 12MHz to the CPU core circuit 1 to be used as a main frequency of the CPU core circuit 1; the JTAG interface is used for program debugging and programming of the CPU chip; the CPU core circuit 1 is provided with a USB2.0 interface, and can be directly connected to the touch panel 5 for transmitting signals to the touch panel 5 for display.
It should be noted that although the CPU core circuit 1 is provided with an internal watchdog, for the sake of safety, the CPU core circuit 1 is provided with an external watchdog of STWD100NYWY3F, the CPU core circuit 1 needs to feed the external watchdog at regular time, and the watchdog chip resets the CPU when the external watchdog is not fed for a certain time.
Preferably, as shown in fig. 3, the power circuit 2 includes a 5V to 3.3V power chip, a 5V to 15V power chip, and a 5V to-15V power chip, where the 5V to 3.3V power chip is used to supply power to the crystal oscillator, the CPU core circuit 1, the RS422 communication circuit, and the watchdog circuit, where the model of the 5V to 3.3V power chip is SPX1117M3-3.3, the model of the 5V to 15V power chip is TPS61081, and the model of the 5V to-15V power chip is TPS 63700.
Specifically, when the device is charged, a 220V commercial power is used for charging the rechargeable lithium battery, when the rechargeable lithium battery supplies power, a 5V to 3.3V power supply chip in the power supply circuit 2 converts the 5V voltage provided by the lithium battery into a 3.3V digital voltage, a 5V to 15V power supply chip converts the 5V voltage provided by the lithium battery into a 15V analog voltage, a 5V to-15V power supply chip converts the 5V voltage provided by the lithium battery into a-15V analog voltage, the 3.3V voltage is mainly supplied to a crystal oscillator and a CPU core circuit, the RS422 communication circuit, the external watchdog circuit and other digital circuits supply power, the +/-15V analog voltage is used by the feedback processing circuit, the +15V analog voltage is converted into +/-6V voltage and is provided for the angular position sensor as excitation voltage, the 5V voltage is used by the A/D conversion circuit, and the +15V analog voltage is converted into 2.5V reference voltage and is used by the A/D conversion circuit.
It should be noted that, because the device is a handheld device, power is supplied by a rechargeable lithium battery during normal use.
Preferably, the 3-path angular displacement excitation circuit is used for outputting an excitation signal to the angular displacement sensor, and the angular displacement sensor starts to work; the 3-path feedback processing circuit is used for receiving the feedback signal output by the angular displacement sensor and processing the feedback signal into a direct current signal which can be collected by the A/D conversion circuit; the A/D conversion circuit is responsible for converting the processed direct current signals into digital signals and providing the digital signals to the CPU core circuit 1 for collection through a data parallel bus; the CPU core circuit 1 transmits the collected data to the touch panel 5 through a USB interface for display and storage.
Preferably, as shown in fig. 4, the 3-way angular displacement excitation circuit includes an α 1 angular displacement excitation circuit, an α 2 angular displacement excitation circuit and a D8 angular displacement excitation circuit, and the 3-way feedback processing circuit includes an α 1 feedback processing circuit, an α 2 feedback processing circuit and a D8 feedback processing circuit, wherein the angular displacement sensor includes an α 1 sensor, an α 2 sensor and a D8 sensor, the α 1 sensor is an engine fan inlet guide vane sensor, the α 2 sensor is a compressor inlet guide vane sensor, and the D8 sensor is a nozzle area sensor; the 3-path angular displacement excitation circuit converts 3.3V and 400Hz square wave signals provided by the CPU core circuit 1 into +/-6V and 400Hz square wave signals and provides the square wave signals to the three angular displacement sensors, so that the three angular displacement sensors can work normally, the 3-path feedback processing circuit is responsible for receiving sinusoidal signals fed back by the corresponding angular displacement sensors, and the sinusoidal signals are processed into direct-current voltage within 0-5V through internal full-wave rectification, voltage amplification and four-order low-pass filtering and provided to the subsequent A/D conversion circuit for collection.
Preferably, as shown in fig. 5, the a/D conversion circuit 4 includes an RC filter circuit, a multi-way switch, an operational amplifier chip, and an a/D conversion chip; the A/D conversion circuit finishes the acquisition of 3 paths of sensor feedback signals, firstly, processed direct current signals enter a multi-path switch after passing through a first-order passive RC filter circuit, the multi-path switch sequentially selects one path of three paths of feedback processing signals to amplify the signals and then enters an A/D conversion chip, if only the feedback signals of a certain path of sensor need to be acquired, the multi-path switch is controlled by a CPU core circuit 1 to always select the path of feedback signals for acquisition, the A/D conversion chip receives the direct current signals and converts the direct current signals into 14-bit digital signals through an internal A/D conversion function, and the acquired values are transmitted to the CPU core circuit 1 through a parallel bus connected with the CPU core circuit 1.
Specifically, the A/D conversion chip selects a 14-bit successive approximation type ADC (analog to digital converter) -AD 7899, the sampling time is 2.5us, a 2.5V precision reference source is additionally arranged, the conversion of analog quantity signal input is completed through the access control of the CPU core circuit 1, and data are transmitted to the CPU core circuit 1 through a parallel bus interface.
Preferably, the touch panel 5 is an explosion-proof type strong panel, and the explosion-proof type strong panel is basically configured as follows:
a) a processor: an intel pentium processor;
b) memory: 4G DDR 3;
c) hard disk: 128 GB;
d) operating the system: windows 7;
e) a display screen: 8.1' display;
f) lithium battery: 4200 mAh;
g) comprises an AC power adapter (65W, 100-240V AC, 50/60 Hz).
Preferably, as shown in fig. 6, each angular displacement excitation circuit includes a CPU chip D1, an analog switch D2, a first operational amplifier chip N1, a first triode N2, a second triode N3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, wherein the CPU chip D1 is connected to the analog switch D1, the analog switch D1 is respectively connected to the first capacitor C1, the second capacitor C1, the third capacitor C1, the first resistor R1, and the second resistor R1, the analog switch D1 is further connected to a positive input terminal of the first operational amplifier chip N1, a negative input terminal of the first operational amplifier chip N1 is connected to an output terminal of the first operational amplifier chip N1, an output terminal of the first operational amplifier chip N1 is connected to a base of the third resistor R1, and a base of the third resistor R1, the fourth resistor R4, and the base of the first operational amplifier chip N1, The base of the second triode N3 is connected, and the emitter of the first triode N2 is connected with the emitter of the second triode N3.
The CPU chip D1 generates a PWM signal of 400Hz/3.3V, the signal controls the on-off of the analog switch D2, the analog switch D2 converts the input +10V and-10V signals and outputs a square wave signal of 400 Hz/+/-10V, the square wave signal enters the first operational amplifier chip N1 and then is divided into a square wave signal of 400 Hz/+/-6V through the third resistor R3 and the fourth resistor R4, and the square wave signal drives a push-pull circuit composed of two triodes N2 and N3 to form an excitation signal required by the sensor and provide the excitation signal for the sensor.
Preferably, as shown in fig. 7, each feedback processing circuit includes a second operational amplifier chip N4, a third operational amplifier chip N5, a fourth operational amplifier chip N6, a fifth operational amplifier chip N7, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a first diode VD1, and a second diode VD2, wherein a positive input terminal of the second operational amplifier chip N4 is connected to the fifth resistor R4, a negative input terminal of the second operational amplifier chip N4 is connected to the seventh resistor R4, an output terminal of the second operational amplifier chip N4 is connected to a positive input terminal of the third operational amplifier chip N4, negative input terminals of the first diode VD 4 and the sixth resistor VD 4 are respectively connected to negative input terminals of the first operational amplifier chip N4, an output end of the third operational amplifier chip N5 is connected to an anode of the first diode VD1 and a cathode of the second diode VD2, an anode of the second diode VD2 is connected to a sixth resistor R6 and an eighth resistor R8, the seventh resistor R7 is connected to a ninth resistor R9, the eighth resistor R8 is connected to a negative input end of the fourth operational amplifier chip N6, a positive input end of the fourth operational amplifier chip N6 is grounded, an output end of the fourth operational amplifier chip N6 is connected to a ninth resistor R9 and a tenth resistor R10, the tenth resistor R10 is connected to an eleventh resistor R11 and a fourth capacitor C4, the eleventh resistor R11 is connected to a twelfth resistor R12 and a sixth capacitor C6, the twelfth resistor R12 is connected to a thirteenth resistor R13 and a fifth capacitor C5, and the sixth capacitor C6 is connected to a negative input end of the fifth operational amplifier chip N7, the positive input end of the fifth operational amplifier chip N7 is connected to the thirteenth resistor R13.
Sinusoidal signals fed back and input by the angular displacement sensor are processed by the second operational amplifier chip N4, enter a precise full-wave rectification circuit consisting of the third operational amplifier chip N5, the first diode VD1, the second diode VD2 and R5-R8 and are processed into steamed bread waves, and the steamed bread waves are amplified by an amplifying circuit consisting of the fourth operational amplifier chip N6 and the fifth operational amplifier chip N7 and finally filtered by a fourth-order low-pass filter circuit to generate appropriate direct-current signals.
The utility model provides a hand-held type angular displacement sensor angular position calibrating device's working process as follows:
firstly, connecting the angular position calibration device of the handheld angular displacement sensor with an angular displacement sensor on an engine through a cable;
secondly, the output angle of the angular displacement sensor is adjusted to be minimum and maximum through the pressing device, the numerical values acquired when the angle is minimum and maximum are observed and stored in real time through acquisition software on the touch panel, and whether the numerical value change of the angle in the process from minimum to maximum is linear or not is observed, so that the minimum and maximum acquisition values and the linearity can meet the assembly requirements of the sensor.
The utility model provides a hand-held type angular displacement sensor angular position calibrating device can extensively be used for angular displacement sensor's on-the-spot calibration, has filled the blank that does not have portable equipment at present, has improved the efficiency of assembly scene and test bench corner displacement sensor installation test.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some changes or modifications to the equivalent embodiments without departing from the technical scope of the present invention, but all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the technical scope of the present invention.
Claims (8)
1. A hand-held angular displacement sensor angle position calibration device is characterized by comprising a CPU core circuit (1), a power circuit (2), a 3-path excitation/feedback circuit (3), an A/D conversion circuit (4) and a touch panel (5), wherein the 3-path excitation/feedback circuit (3) comprises a 3-path angular displacement excitation circuit and a 3-path feedback processing circuit, the CPU core circuit (1) is respectively connected with a crystal oscillator, a power-on reset circuit, an RS422 communication circuit, a watchdog circuit, a 3-path angular displacement exciting circuit, an A/D conversion circuit (4) and a touch panel (5), the A/D conversion circuit (4) is also connected with the 3-path feedback processing circuit, the power supply circuit (2) is used for supplying power to the CPU core circuit (1), the 3-path excitation/feedback circuit (3) and the A/D conversion circuit (4);
each angular displacement excitation circuit comprises a CPU chip D1, an analog switch D2, a first operational amplifier chip N1, a first triode N2, a second triode N3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, wherein the CPU chip D1 is connected with the analog switch D1, the analog switch D1 is respectively connected with the first capacitor C1, the second capacitor C1, the third capacitor C1, the first resistor R1 and the second resistor R1, the analog switch D1 is further connected with a positive input end of the first operational amplifier chip N1, a negative input end of the first operational amplifier chip N1 is connected with an output end of the first operational amplifier chip N1, an output end of the first operational amplifier chip N1 is connected with a base of the third resistor R1, and a base of the fourth resistor R1, The base of the second triode N3 is connected, and the emitter of the first triode N2 is connected with the emitter of the second triode N3.
2. The angular position calibration device of claim 1, wherein the 3-way angular displacement excitation circuit is configured to output an excitation signal to the angular displacement sensor, and the angular displacement sensor starts to operate; the 3-path feedback processing circuit is used for receiving the feedback signal output by the angular displacement sensor and processing the feedback signal into a direct current signal which can be collected by the A/D conversion circuit; the A/D conversion circuit is responsible for converting processed direct current signals into digital signals and providing the digital signals to the CPU core circuit (1) for collection through a data parallel bus; the CPU core circuit (1) transmits the collected data to the touch panel (5) through a USB interface for display and storage.
3. The angular position calibration device of claim 2, wherein the 3-way angular displacement excitation circuit comprises an α 1 angular displacement excitation circuit, an α 2 angular displacement excitation circuit and a D8 angular displacement excitation circuit, and the 3-way feedback processing circuit comprises an α 1 feedback processing circuit, an α 2 feedback processing circuit and a D8 feedback processing circuit, wherein the angular displacement sensor comprises an α 1 sensor, an α 2 sensor and a D8 sensor, the α 1 sensor is an engine fan inlet guide vane sensor, the α 2 sensor is a compressor inlet guide vane sensor, and the D8 sensor is a nozzle area sensor.
4. The angular position calibration device of a handheld angular displacement sensor according to claim 1, characterized in that the CPU core circuit (1) employs an LPC2468 microcontroller based on ARM7TDMI-S kernel design.
5. The device for calibrating the angular position of a handheld angular displacement sensor according to claim 1, wherein the power circuit (2) comprises a 5V to 3.3V power chip, a 5V to 15V power chip, and a 5V to-15V power chip, wherein the 5V to 3.3V power chip is used for supplying power to the crystal oscillator, the CPU core circuit (1), the RS422 communication circuit, and the watchdog circuit.
6. The angular position calibration device of claim 1, wherein the A/D conversion circuit (4) comprises an RC filter circuit, a multiplexer, an operational amplifier chip and an A/D conversion chip.
7. The angular position calibration device of a handheld angular displacement sensor according to claim 1, wherein the touch panel (5) is an explosion-proof type strong panel.
8. The device as claimed in claim 1, wherein each feedback processing circuit comprises a second operational amplifier chip N4, a third operational amplifier chip N5, a fourth operational amplifier chip N6, a fifth operational amplifier chip N7, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourth resistor C4, a fifth capacitor C5, a sixth capacitor C6, a first diode VD1, and a second diode 2, wherein a positive input terminal of the second operational amplifier chip N4 is connected to the fifth resistor R637, a negative input terminal of the second operational amplifier chip N4 is connected to the seventh resistor R7, an output terminal of the second operational amplifier chip N7 is connected to a positive input terminal of the third operational amplifier chip N7, and a negative input terminal of the third operational amplifier chip N7 are respectively connected to a negative input terminal of the third operational amplifier chip N7, A cathode of a first diode VD1, an output end of the third operational amplifier chip N5 is connected to an anode of the first diode VD1 and a cathode of the second diode VD2, an anode of the second diode VD2 is connected to a sixth resistor R6 and an eighth resistor R8, respectively, the seventh resistor R7 is connected to a ninth resistor R9, the eighth resistor R8 is connected to a negative input end of the fourth operational amplifier chip N6, a positive input end of the fourth operational amplifier chip N6 is grounded, an output end of the fourth operational amplifier chip N6 is connected to a ninth resistor R9 and a tenth resistor R10, the tenth resistor R10 is connected to an eleventh resistor R11 and a fourth capacitor C4, the eleventh resistor R11 is connected to a twelfth resistor R12 and a sixth capacitor C6, the twelfth resistor R12 is connected to a thirteenth resistor R12, a fifth capacitor C12, and the fifth capacitor N12 is connected to the negative input end of the fifth operational amplifier chip N12, the positive input end of the fifth operational amplifier chip N7 is connected to the thirteenth resistor R13.
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| CN202023247035.5U CN214470981U (en) | 2020-12-29 | 2020-12-29 | Angle and position calibrating device for handheld angular displacement sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683321A (en) * | 2020-12-29 | 2021-04-20 | 中国航发控制系统研究所 | Angle and position calibrating device for handheld angular displacement sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112683321A (en) * | 2020-12-29 | 2021-04-20 | 中国航发控制系统研究所 | Angle and position calibrating device for handheld angular displacement sensor |
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