Laser displacement sensor acquisition circuit
By designing the acquisition circuit and MCU controller of multi-sampling units in the laser displacement sensor, the dynamic adjustment and automatic shutdown functions of sampling accuracy are realized, and the problems of fixed accuracy and continuous sampling in the prior art are solved, which improves the applicability of the equipment and efficiency.
Patent Information
- Application Number
- CN202411851612.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-01-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The sampling accuracy of existing laser displacement sensors is fixed, and cannot be adjusted between different scenes, and there is continuous sampling when there is no object to be measured, so it cannot be automatically turned off.
A laser displacement sensor acquisition circuit including a detection circuit, a sampling circuit and an operation circuit is designed. The accuracy is controlled through a sampling circuit composed of multiple sampling units. The MCU controller inputs signals to adjust the sampling accuracy, and automatically operates statically. Turn off continuous sampling.
It realizes the ability to dynamically adjust the sampling accuracy according to the usage environment, supports multiplexing in different scenarios, and automatically closes sampling when there is no object to be measured, improving acquisition efficiency and accuracy.
Smart Images
Figure CN119309501A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of laser sensors, and in particular to a laser displacement sensor acquisition circuit. Background Art
[0002] Laser displacement sensors are often used in displacement measurement of moving axes or system calibration. They can measure changes in position and displacement of the object being measured without contacting it. Common laser sensors are mainly composed of a laser transmitter, a receiver, and a measurement sampling circuit. However, the current laser displacement sensors have a fixed sampling accuracy and cannot adjust the accuracy when reused in other scenarios. In addition, continuous sampling still occurs when there is no object being measured. Summary of the invention
[0003] In view of the above technical problems, the purpose of the present invention is to provide a laser displacement sensor acquisition circuit, including a detection circuit, a sampling circuit, an operation circuit, and an MCU controller. The sampling circuit is connected to the operation circuit and the detection circuit, and the operation circuit is connected to the MCU controller. The detection circuit is used to detect the amplitude and state of the sensor displacement signal. When in non-static operation, the sampling control signal Tag_1 and the sampling signal Tag_2 are fed back to the sampling circuit. The accuracy of the sampling circuit is controlled by a plurality of sampling units. When the Tag_1 signal is input, each sampling unit samples the sampling signal Tag_2 in turn and feeds back the signal to the operation circuit. After the sampling is completed, the sampling unit feeds back the operation reset signal Tag_5 to the operation circuit to perform balanced calculation on its sampling point, or the MCU controller inputs the operation reset signal Tag_5 to the operation circuit. The operation circuit feeds back the operation result to the MCU controller for waveform drawing and imaging. When the laser is in static operation, the detection circuit feeds back the interrupt signal Tag_6 to the sampling unit.
[0004] Further, the sampling circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first trigger U1, a second trigger U2, a third operational amplifier U3, a fourth digital potentiometer U4, a fifth operational amplifier U5, a sixth digital potentiometer U6, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, and a fifth diode D5, one end of the second resistor R2, one end of the fourth resistor R4, a first pin of the fourth digital potentiometer U4, an eighth pin of the fourth digital potentiometer U4, a first pin of the sixth digital potentiometer U6, and an eighth pin of the sixth digital potentiometer U6. The first pin of the first trigger U1 is connected to the power supply, the anode of the first diode D1, the anode of the second diode D2, the anode of the third diode D3 and the operation signal Tag_5 are connected, the cathode of the first diode D1 and the fourth pin of the second trigger U2, one end of the third resistor R3, and the cathode of the fifth diode D5 are connected, the cathode of the second diode D2 and one end of the first resistor R1, the fourth pin of the first trigger U1, and the cathode of the fourth diode D4 are connected, the first pin of the first trigger U1 and the fifth pin of the second trigger U2, the seventh pin of the fourth digital potentiometer U4, and one end of the ninth resistor R9 are connected, the second pin of the first trigger U1, the sixth pin of the first trigger U1 and the anode of the fourth diode D4 are connected, the third pin of the first trigger U1, the third pin of the second trigger U2, the third second pin of the The cathode of the diode D3, one end of the seventh resistor R7 and the sampling control signal Tag_1 are connected, the fifth pin of the first trigger U1, the seventh pin of the sixth digital potentiometer U6, one end of the eighth resistor R8 and the first plug-in signal Tag_3 are connected, the first pin of the second trigger U2 is connected to the second plug-in signal Tag_4, the second pin of the second trigger U2, the sixth pin of the second trigger U2 and the anode of the fifth diode D5 are connected, the in-phase end of the third operational amplifier U3, the in-phase end of the fifth operational amplifier U5 and the sampling signal Tag_2 are connected, the inverting end of the third operational amplifier U3 is connected to the other end of the second resistor R2 and the third pin of the fourth digital potentiometer U4, the output end of the third operational amplifier U3 is connected to the second pin of the fourth digital potentiometer U4, the One end of the fifth resistor R5 is connected, the inverting end of the fifth operational amplifier U5 is connected to the other end of the fourth resistor R4 and the third pin of the sixth digital potentiometer U6, the output end of the fifth operational amplifier U5 is connected to the second pin of the sixth digital potentiometer U6 and one end of the sixth resistor R6, the other end of the first resistor R1, the other end of the third resistor R3, the other end of the fifth resistor R5, the other end of the sixth resistor R6, the other end of the seventh resistor R7, the other end of the eighth resistor R8, the other end of the ninth resistor R9, the fourth pin of the fourth digital potentiometer U4, the fifth pin of the fourth digital potentiometer U4, the sixth pin of the fourth digital potentiometer U4, the fourth pin of the sixth digital potentiometer U6, the fifth pin of the sixth digital potentiometer U6, the sixth pin of the sixth digital potentiometer U6 and the ground terminal are connected.
[0005] Further, the detection circuit includes a tenth resistor R10, a fourteenth resistor R14, a seventh NOT gate U7, an eighth operational amplifier U8, a ninth operational amplifier U9, a first transistor Q1, and a second MOS transistor Q2, wherein the collector of the first transistor Q1 is connected to a power supply, the emitter of the first transistor Q1, the inverting end of the eighth operational amplifier U8, the non-inverting end of the ninth operational amplifier U9, and one end of the tenth resistor R10 are connected to the sampling signal Tag_2, the drain of the second MOS transistor Q2 is connected to the clock signal CLK, the source of the second MOS transistor Q2, one end of the fourteenth resistor R14 are connected to the sampling control signal Tag_1, the gate of the second MOS transistor Q2 is connected to the input end of the seventh NOT gate U7, the output end of the eighth operational amplifier U8, and the output end of the ninth operational amplifier U9, the output end of the seventh NOT gate U7 is connected to the interrupt signal Tag_6, and the other end of the tenth resistor R10 and the other end of the fourteenth resistor R14 are connected to the ground.
[0006] Furthermore, the detection circuit also includes an eleventh resistor R11, a twelfth resistor R12, and a thirteenth resistor R13, one end of the eleventh resistor R11 is connected to the power supply, the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R12 and the same phase end of the eighth operational amplifier U8, the other end of the twelfth resistor R12 is connected to one end of the thirteenth resistor R13 and the inverting end of the ninth operational amplifier U9, and the other end of the thirteenth resistor R13 is connected to the ground.
[0007] Furthermore, the detection circuit also includes a fifteenth resistor R15, one end of the fifteenth resistor R15 is connected to the gate of the second MOS tube Q2, and the other end of the fifteenth resistor R15 is connected to the ground.
[0008] Furthermore, the eleventh resistor R11, the twelfth resistor R12, and the thirteenth resistor R13 are adjustable resistors.
[0009] Furthermore, it also includes a clock circuit, which is connected to the detection circuit.
[0010] The beneficial effects of the present invention compared with the prior art are: The present invention can control the sampling accuracy according to the use environment, reorganize the control accuracy when multiplexed to other scenes, and input Tag_5 signal to control the sampling accuracy through the MCU controller. During continuous sampling, the laser can be automatically shut down when it is in static working time. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0012] Figure 1 The present invention provides an overall structural diagram.
[0013] Figure 2 This is a schematic diagram of the sampling unit structure provided by the present invention.
[0014] Figure 3 This is a schematic diagram of the detection circuit structure provided by the present invention. DETAILED DESCRIPTION
[0015] In order to make the objects and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.
[0016] The invention discloses a laser displacement sensor acquisition circuit, comprising a detection circuit, a sampling circuit, an operation circuit, and an MCU controller. The sampling circuit is connected to the operation circuit and the detection circuit, and the operation circuit is connected to the MCU controller. The detection circuit is used to detect the amplitude and state of the sensor displacement signal. When in non-static operation, a sampling control signal Tag_1 and a sampling signal Tag_2 are fed back to the sampling circuit. The accuracy of the sampling circuit is controlled by a plurality of sampling units. When a Tag_1 signal is input, each sampling unit samples the sampling signal Tag_2 in turn and feeds back the signal to the operation circuit. After the sampling is completed, the sampling unit feeds back an operation reset signal Tag_5 to the operation circuit to perform a balanced calculation on its sampling point, or the MCU controller inputs the operation reset signal Tag_5 to the operation circuit. The operation circuit feeds back the operation result to the MCU controller for waveform drawing and imaging. When the laser is in static operation, the detection circuit feeds back an interrupt signal Tag_6 to the sampling unit.
[0017] Specifically, the sampling circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a first trigger U1, a second trigger U2, a third operational amplifier U3, a fourth digital potentiometer U4, a fifth operational amplifier U5, a sixth digital potentiometer U6, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, and a fifth diode D5, one end of the second resistor R2, one end of the fourth resistor R4, a first pin of the fourth digital potentiometer U4, an eighth pin of the fourth digital potentiometer U4, a first pin of the sixth digital potentiometer U6, and an eighth pin of the sixth digital potentiometer U6 and a power supply, the anode of the first diode D1, the anode of the second diode D2, the anode of the third diode D3 and the operation signal Tag_5 are connected, the cathode of the first diode D1 and the fourth pin of the second trigger U2, one end of the third resistor R3, and the cathode of the fifth diode D5 are connected, the cathode of the second diode D2 and one end of the first resistor R1, the fourth pin of the first trigger U1, and the cathode of the fourth diode D4 are connected, the first pin of the first trigger U1 and the fifth pin of the second trigger U2, the seventh pin of the fourth digital potentiometer U4, and one end of the ninth resistor R9 are connected, the second pin of the first trigger U1, the sixth pin of the first trigger U1 and the anode of the fourth diode D4 are connected, the third pin of the first trigger U1, the third pin of the second trigger U2, and the third second pin are connected. The cathode of the diode D3, one end of the seventh resistor R7 and the sampling control signal Tag_1 are connected, the fifth pin of the first trigger U1, the seventh pin of the sixth digital potentiometer U6, one end of the eighth resistor R8 and the first plug-in signal Tag_3 are connected, the first pin of the second trigger U2 is connected to the second plug-in signal Tag_4, the second pin of the second trigger U2, the sixth pin of the second trigger U2 and the anode of the fifth diode D5 are connected, the in-phase end of the third operational amplifier U3, the in-phase end of the fifth operational amplifier U5 and the sampling signal Tag_2 are connected, the inverting end of the third operational amplifier U3 is connected to the other end of the second resistor R2 and the third pin of the fourth digital potentiometer U4, the output end of the third operational amplifier U3 is connected to the second pin of the fourth digital potentiometer U4, the One end of the fifth resistor R5 is connected, the inverting end of the fifth operational amplifier U5 is connected to the other end of the fourth resistor R4 and the third pin of the sixth digital potentiometer U6, the output end of the fifth operational amplifier U5 is connected to the second pin of the sixth digital potentiometer U6 and one end of the sixth resistor R6, the other end of the first resistor R1, the other end of the third resistor R3, the other end of the fifth resistor R5, the other end of the sixth resistor R6, the other end of the seventh resistor R7, the other end of the eighth resistor R8, the other end of the ninth resistor R9, the fourth pin of the fourth digital potentiometer U4, the fifth pin of the fourth digital potentiometer U4, the sixth pin of the fourth digital potentiometer U4, the fourth pin of the sixth digital potentiometer U6, the fifth pin of the sixth digital potentiometer U6, the sixth pin of the sixth digital potentiometer U6 and the ground terminal are connected.
[0018] Specifically, the detection circuit includes a tenth resistor R10, a fourteenth resistor R14, a seventh NOT gate U7, an eighth operational amplifier U8, a ninth operational amplifier U9, a first transistor Q1, and a second MOS transistor Q2, wherein the collector of the first transistor Q1 is connected to a power supply, the emitter of the first transistor Q1, the inverting end of the eighth operational amplifier U8, the non-inverting end of the ninth operational amplifier U9, and one end of the tenth resistor R10 are connected to a sampling signal Tag_2, the drain of the second MOS transistor Q2 is connected to a clock signal CLK, the source of the second MOS transistor Q2, one end of the fourteenth resistor R14 are connected to a sampling control signal Tag_1, the gate of the second MOS transistor Q2 is connected to an input end of the seventh NOT gate U7, an output end of the eighth operational amplifier U8, and an output end of the ninth operational amplifier U9, the output end of the seventh NOT gate U7 is connected to an interrupt signal Tag_6, and the other end of the tenth resistor R10 and the other end of the fourteenth resistor R14 are connected to a ground end.
[0019] Specifically, the detection circuit also includes an eleventh resistor R11, a twelfth resistor R12, and a thirteenth resistor R13, one end of the eleventh resistor R11 is connected to the power supply, the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R12 and the in-phase end of the eighth operational amplifier U8, the other end of the twelfth resistor R12 is connected to one end of the thirteenth resistor R13 and the inverting end of the ninth operational amplifier U9, and the other end of the thirteenth resistor R13 is connected to the ground end.
[0020] Specifically, the detection circuit further includes a fifteenth resistor R15, one end of the fifteenth resistor R15 is connected to the gate of the second MOS tube Q2, and the other end of the fifteenth resistor R15 is connected to the ground.
[0021] Specifically, the eleventh resistor R11, the twelfth resistor R12, and the thirteenth resistor R13 are adjustable resistors.
[0022] Specifically, it also includes a clock circuit, which is connected to the detection circuit.
[0023] The detection circuit detects the displacement sensor signal output signal, and outputs Tag_1 sampling control signal and Tag_2 sampling signal to the sampling circuit. The sampling circuit is composed of multiple sampling units to form a 4 to 64-bit sampling circuit. Tag_3 in the sampling unit is the first plug-in signal, and Tag_4 is the second plug-in signal. Assuming that the sampling accuracy adopts 32-bit sampling, except that Tag_4 of the first sampling unit is connected to the power supply, the Tag_3 of the previous sampling unit in the remaining sampling units is connected to the Tag_4 of the subsequent sampling unit, and the Tag_3 of the last sampling unit is connected to the operation reset signal Tag_5 of each sampling unit, and the interrupt signal Tag_6 of the detection circuit is also connected to the Tag_5 of each sampling unit. Tag_5 is also connected to the operation circuit. When Tag_5 outputs a signal, the operation circuit performs balanced calculation on the sampling point and feeds back to the MCU controller to complete waveform drawing and imaging. Tag_5 can also be connected to the MCU controller. When it is not reorganized for multiplexing, the MCU controller can output the Tag_5 signal to control the sampling accuracy.
[0024] The first transistor Q1 in the detection circuit is a coupling element at the receiving end of the displacement laser and is used to receive the coupled laser signal. The ninth operational amplifier U9 and the eighth operational amplifier U8 are used to detect coupling changes. The eleventh resistor R11, the twelfth resistor R12, and the thirteenth resistor R13 set the coupling reference signal. The seventh NOT gate U7 is used to invert the output signals of the eighth operational amplifier U8 and the ninth operational amplifier U9 to the sampling unit. The drain of the second MOS tube Q2 inputs a clock signal. The gate of the second MOS tube Q2 is used to receive the output signals of the eighth operational amplifier U8 and the ninth operational amplifier U9. Continuous sampling is turned off when the laser is in a static working time. When the object under test causes the coupling of the first transistor Q1 to change, the voltage at the end of the tenth resistor R10 changes. And fed back to the inverting end of the eighth operational amplifier U8 and the non-inverting end of the ninth operational amplifier U9. The ninth operational amplifier U9 outputs when the concave detection is performed, and the eighth operational amplifier U8 outputs when the convex detection is performed. The coupled reference signal can also be set by the power supply, or the corresponding connected voltage divider resistor is set to an adjustable resistor. The signals output by the ninth operational amplifier U9 and the eighth operational amplifier U8 are fed back to the seventh NOT gate U7 and the gate of the second MOS tube Q2 at the same time. The second MOS tube Q2 is turned on to feed back the CLK clock signal to Tag_1. The third operational amplifier U3 and the fifth operational amplifier U5 of the sampling unit receive the Tag_2 signal, and output the corresponding control signal to the second pins of the fourth digital potentiometer U4 and the sixth digital potentiometer U6. Ta When g_1 is in the low level stage, the voltage at the connection end of the third pin of the fourth digital potentiometer U4 and the second resistor R2 corresponds to Tag_2. When the Tag_1 input signal is high level, the signal is first fed back to the third pin of the second trigger U2 through the seventh resistor R7 and the ground loop. When the second trigger U2 is in the initial state, the fourth pin is output from the second pin and input through the fifth diode D5. After Tag_1 is input, the second pin of the second trigger U2 is cut off. After the fourth pin is pulled down through the third resistor R3 loop, the fifth pin outputs the signal through the ninth resistor R9 loop. The voltage at the terminal of the ninth resistor R9 is input to the seventh pin of the fourth digital potentiometer U4. The fourth digital potentiometer U4 is cut off. At this time, the third pin of the fourth digital potentiometer U4 and the second resistor R2 The connection terminal voltage corresponds to the sampling signal before the fourth digital potentiometer U4 is cut off. At the same time, the fifth pin of the second trigger U2 is also fed back to the first pin of the first trigger U1, and the first trigger U1 is set. The voltage at the connection terminal between the third pin of the sixth digital potentiometer U6 and the fourth resistor R4 is still in a corresponding state with Tag_2. When the clock signal input by Tag_1 enters a high level again, the first trigger U1 is in a set state, and the Tag_1 signal is fed back to the third pin of the first trigger U1. The second pin of the first trigger U1 is cut off. The fourth pin of the first trigger U1 is looped through the first resistor R1. The fifth pin of the first trigger U1 outputs a signal to Tag_3 and the seventh pin of the sixth digital potentiometer U6. The sixth digital potentiometer U6 is cut off.The Tag_4 receiving signal of the second sampling unit is input to the first pin of the second trigger U2 of the corresponding sampling unit, and the corresponding fourth digital potentiometer U4 is turned off when Tag_1 changes from a low level to a high level again, until the first trigger U1 of the last sampling unit outputs Tag_3 to Tag_5, and the third diode D3 is turned off when Tag_1 is input. After receiving the Tag_5 signal, the operation circuit performs balanced calculation on the voltage amplitude of the connection terminal between the second resistor R2 and the fourth digital potentiometer U4 of each sampling unit and the amplitude of the connection terminal between the sixth digital potentiometer U6 and the fourth resistor R4, and inputs them to the MCU controller. At the same time, the Tag_5 signal is also input to the second trigger U2 and the fourth pin of the first trigger U1 through the first diode D1 and the second diode D2 respectively, ready for reset, and the other way is fed back to the third pin of the second trigger U2 and the first trigger U1, the fifth pins of the first trigger U1 and the second trigger U2 are cut off, and all sampling units are reset for circulation. When the object to be measured exceeds the detection range of the displacement laser, the eighth operational amplifier U8 and the ninth operational amplifier U9 are cut off, and the output signal of the seventh NOT gate U7 is fed back to Tag_5 through Tag_6 for reset, and Tag_1 has no output and stops continuously sampling the Tag_2 sampling signal.
[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any marking in a claim should not be considered as limiting the claim to which it relates.
Claims
1. A laser displacement sensor acquisition circuit, characterized in that: The invention comprises a detection circuit, a sampling circuit, an operation circuit and an MCU controller. The sampling circuit is connected to the operation circuit and the detection circuit, and the operation circuit is connected to the MCU controller. The detection circuit is used to detect the amplitude and state of the displacement signal of the sensor. When in non-static operation, the sampling control signal Tag_1 and the sampling signal Tag_2 are fed back to the sampling circuit. The accuracy of the sampling circuit is controlled by a plurality of sampling units. When the Tag_1 signal is input, each sampling unit samples the sampling signal Tag_2 in turn and feeds back the signal to the operation circuit. After the sampling is completed, the sampling unit feeds back the operation reset signal Tag_5 to the operation circuit to perform balanced calculation on its sampling point, or the MCU controller inputs the operation reset signal Tag_5 to the operation circuit. The operation circuit feeds back the operation result to the MCU controller for waveform drawing and imaging. When the laser is in static operation, the detection circuit feeds back the interrupt signal Tag_6 to the sampling unit.
2. The laser displacement sensor acquisition circuit according to claim 1, characterized in that: The sampling unit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first trigger, a second trigger, a third operational amplifier, a fourth digital potentiometer, a fifth operational amplifier, a sixth digital potentiometer, a first diode, a second diode, a third diode, a fourth diode, and a fifth diode. One end of the second resistor, one end of the fourth resistor, a first pin of the fourth digital potentiometer, an eighth pin of the fourth digital potentiometer, a first pin of the sixth digital potentiometer, and an eighth pin of the sixth digital potentiometer are connected to a power supply. The anode of the first diode, the anode of the second diode, and the anode of the third diode are connected to an operation signal Tag_5. The cathode of the first diode is connected to the fourth pin of the second trigger, one end of the third resistor, and the cathode of the fifth diode. The cathode of the second diode is connected to one end of the first resistor, the fourth pin of the first trigger, and the cathode of the fourth diode. The first pin of the first trigger and the fifth pin of the second trigger, the seventh pin of the fourth digital potentiometer, and one end of the ninth resistor are connected. The second pin of the first trigger and the sixth pin of the first trigger are connected to the anode of the fourth diode. The third pin of the first trigger, the third pin of the second trigger, the cathode of the third diode, one end of the seventh resistor and The sampling control signal Tag_1 is connected, the fifth pin of the first trigger, the seventh pin of the sixth digital potentiometer, one end of the eighth resistor and the first plug-in signal Tag_3 are connected, the first pin of the second trigger and the second plug-in signal Tag_4 are connected, the second pin of the second trigger, the sixth pin of the second trigger and the anode of the fifth diode are connected, the third operational amplifier in-phase end, the fifth operational amplifier in-phase end and the sampling signal Tag_2 are connected, the third operational amplifier inverting end and the other end of the second resistor and the third pin of the fourth digital potentiometer are connected, the output end of the third operational amplifier and the second pin of the fourth digital potentiometer and the fifth resistor are connected. The first operational amplifier is connected to one end of the fourth resistor, the second operational amplifier is connected to the other end of the fourth resistor and the third pin of the sixth digital potentiometer, the output end of the fifth operational amplifier is connected to the second pin of the sixth digital potentiometer and one end of the sixth resistor, the other end of the first resistor, the other end of the third resistor, the other end of the fifth resistor, the other end of the sixth resistor, the other end of the seventh resistor, the other end of the eighth resistor, the other end of the ninth resistor, the fourth pin of the fourth digital potentiometer, the fifth pin of the fourth digital potentiometer, the sixth pin of the fourth digital potentiometer, the fourth pin of the sixth digital potentiometer, the fifth pin of the sixth digital potentiometer, the sixth pin of the sixth digital potentiometer and the ground terminal are connected.
3. The laser displacement sensor acquisition circuit according to claim 1, characterized in that: The detection circuit includes a tenth resistor, a fourteenth resistor, a seventh NOT gate, an eighth operational amplifier, a ninth operational amplifier, a first triode, and a second MOS transistor. The collector of the first triode is connected to a power supply, the emitter of the first triode, the inverting end of the eighth operational amplifier, the non-inverting end of the ninth operational amplifier, and one end of the tenth resistor are connected to a sampling signal Tag_2, the drain of the second MOS transistor is connected to a clock signal CLK, the source of the second MOS transistor, one end of the fourteenth resistor are connected to a sampling control signal Tag_1, the gate of the second MOS transistor is connected to an input end of the seventh NOT gate, an output end of the eighth operational amplifier, and an output end of the ninth operational amplifier, the output end of the seventh NOT gate is connected to an interrupt signal Tag_6, and the other end of the tenth resistor and the other end of the fourteenth resistor are connected to a ground terminal.
4. The laser displacement sensor acquisition circuit according to claim 1, characterized in that: The detection circuit also includes an eleventh resistor, a twelfth resistor, and a thirteenth resistor. One end of the eleventh resistor is connected to a power supply, the other end of the eleventh resistor is connected to one end of the twelfth resistor and the in-phase end of the eighth operational amplifier, the other end of the twelfth resistor is connected to one end of the thirteenth resistor and the in-phase end of the ninth operational amplifier, and the other end of the thirteenth resistor is connected to the ground end.
5. The laser displacement sensor acquisition circuit according to claim 3, characterized in that: The detection circuit also includes a fifteenth resistor, one end of the fifteenth resistor is connected to the gate of the second MOS tube, and the other end of the fifteenth resistor is connected to the ground end.
6. The laser displacement sensor acquisition circuit according to claim 4, characterized in that: The eleventh resistor, the twelfth resistor and the thirteenth resistor are adjustable resistors.
7. The laser displacement sensor acquisition circuit according to claim 1, characterized in that: It also includes a clock circuit, which is connected to the detection circuit.
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