CN210922685U - Non-contact sensor calibration device and calibration circuit thereof - Google Patents
Non-contact sensor calibration device and calibration circuit thereof Download PDFInfo
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- CN210922685U CN210922685U CN201922207685.8U CN201922207685U CN210922685U CN 210922685 U CN210922685 U CN 210922685U CN 201922207685 U CN201922207685 U CN 201922207685U CN 210922685 U CN210922685 U CN 210922685U
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Abstract
The utility model discloses a calibration circuit of non-contact sensor calibrating device, calibration circuit includes sensor module and trigger module, sensor module includes voltage stabilizing unit and the control unit, voltage stabilizing unit provides stable operating voltage for the control unit, the control unit includes first control chip U1, material response portion, temperature-sensing portion and trigger part, first control chip's pin 1 is connected with voltage stabilizing unit, first control chip U1's pin 5 and pin 6 are connected with the trigger part, first control chip U1's pin 7 is connected with the material response portion, first control chip U1's pin 8 is connected with the temperature-sensing portion, the trigger part is connected with the trigger module; the utility model provides a non-contact sensor calibrating device and calibration circuit thereof can solve the matching problem of multiple material and multiple electric capacity, and has eliminated the influence of temperature to measuring result, improves measurement accuracy.
Description
Technical Field
The utility model relates to a non-contact sensor technical field, in particular to non-contact sensor calibrating device and calibration circuit thereof.
Background
The existing non-contact sensor mainly adopts a capacitive sensing principle, generally comprises a fixed touch chip, and when the non-contact sensor needs to detect different sensing materials and different sensing thicknesses, different capacitance values are needed to finish detection; in the prior art, the sensing distance and the response speed of the non-contact sensor are generally adjusted by adjusting the sensitivity capacitance outside the touch chip, so that the adjustment is troublesome and the application range is small; in addition, the existing non-contact sensor is easily influenced by the ambient temperature in the detection process, so that misjudgment is caused.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art's weak point, an object of the utility model is to provide a non-contact sensor calibrating device and calibration circuit thereof has solved the problem that different materials caused the influence to the measuring result to eliminated the influence of temperature to the measuring result, improved measurement accuracy.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a calibration circuit of non-contact sensor calibrating device, includes sensor module and trigger module, the sensor module includes voltage stabilizing unit and the control unit, the voltage stabilizing unit provides stable operating voltage for the control unit, the control unit includes first control chip U1, material response portion, temperature-sensing portion and trigger part, first control chip's pin 1 is connected with the voltage stabilizing unit, first control chip U1's pin 5 and pin 6 are connected with the trigger part, first control chip U1's pin 7 is connected with the material response portion, first control chip U1's pin 8 is connected with the temperature-sensing portion, the trigger part is connected with the trigger module.
In the calibration circuit of the non-contact sensor calibration device, the voltage stabilizing unit includes a second control chip U2, a fifth resistor R5, a second capacitor C2 and a third capacitor C3, one end of the fifth resistor R5 is connected to a pin 2 of the second control chip U2, the other end of the fifth resistor R5 is connected to a pin 3 of the second control chip U2, one end of the second capacitor C2 is connected to a pin 2 of the second control chip U2, the other end of the second capacitor C2 is grounded, one end of the third capacitor C3 is connected to a pin 3 of the second control chip U2, the other end of the third capacitor C3 is grounded, a pin 1 of the second control chip U2 is grounded, a pin 2 of the second control chip U2 is connected to an external power source VCC, and a pin 3 of the second control chip U2 is connected to a pin 1 of the first control chip U1.
The calibration circuit of the non-contact sensor calibration device comprises a trigger module, wherein the trigger module comprises a first communication port P1, a sixth resistor R6, a light-emitting diode D1 and a key SW1, a pin 1 of the first communication port P1 is connected with an external power VCC, one end of a sixth resistor R6 is connected with the external power VCC, the other end of a sixth resistor R6 is connected with the anode of the light-emitting diode D1, the cathode of the light-emitting diode D1 is connected with a pin 2 of a first communication port P1, one end of the key SW1 is connected with a pin 2 of the first communication port P1, the other end of the key SW1 is grounded, and a pin 3 of the first communication port P1 is grounded.
In the calibration circuit of the non-contact sensor calibration device, the control unit comprises a sensing surface, the material sensing part comprises a second resistor R2, one end of the second resistor R2 is connected with the pin 7 of the first control chip U1, and the other end of the second resistor R2 is connected with the sensing surface.
In the calibration circuit of the non-contact sensor calibration device, the control unit comprises a temperature detection device, the temperature sensing part comprises a first resistor R1, one end of the first resistor R1 is connected with a pin 8 of a first control chip U1, and the other end of the first resistor R1 is connected with the temperature detection device.
In the calibration circuit of the non-contact sensor calibration device, the trigger part comprises a third resistor R3, a fourth resistor R4 and a triode Q1, one end of the third resistor R3 is connected with a pin 5 of a first control chip U1, the other end of the third resistor R3 is connected with a pin 2 of a first communication port P1, one end of the fourth resistor R4 is connected with a pin 6 of the first control chip U1, the other end of the fourth resistor R4 is connected with a base electrode of the triode Q1, a collector electrode of the triode Q1 is connected with the pin 2 of the first communication port P1, and an emitter electrode of the triode Q1 is grounded.
In the calibration circuit of the non-contact sensor calibration device, the control unit further includes a first capacitor C1, one end of the first capacitor C1 is connected to pin 2 of the first control chip U1, the other end of the first capacitor C1 is grounded, and pin 3 of the first control chip U1 is grounded.
In the calibration circuit of the non-contact sensor calibration device, the control unit further comprises a communication part and a burning part, the communication part comprises a second communication port P2, a pin 1 of the second communication port P2 is connected with an external power VCC, a pin 2 of the second communication port P2 is connected with a pin 5 of a first control chip U1, and a pin 3 of the second communication port P2 is grounded; the burning part comprises a third communication port P3, a pin 1 of the third communication port P3 is connected with a pin 3 of a first control chip U1, a pin 2 of the third communication port P3 is connected with a pin 4 of the first control chip U1, a pin 3 of the third communication port P3 is connected with a pin 5 of the first control chip U1, and a pin 4 of the third communication port P3 is grounded.
The utility model discloses still the correspondence provides a non-contact sensor calibrating device, including non-contact sensor and button frock, non-contact sensor includes first control panel and communication line, be provided with response face and temperature-detecting device on the first control panel, still be provided with above-mentioned sensor module on the first control panel, the button frock is including triggering button, pilot lamp and second control panel, be provided with above-mentioned trigger module on the second control panel, non-contact sensor passes through the communication line is connected with the button frock.
Has the advantages that:
the utility model provides a non-contact sensor calibrating device and calibration circuit thereof, it has following advantage:
(1) the calibration circuit comprises a material sensing part, can shield the capacitance value of the installation material, solves the matching problem of various materials and various capacitors, eliminates the influence of the installation material on the measurement result, and improves the applicability and the measurement precision of the non-contact sensor;
(2) the calibration circuit comprises a temperature sensing part, can detect the temperature in the non-contact sensor and perform temperature compensation, solves the problem that the non-contact sensor is affected by the temperature, and improves the measurement precision of the non-contact sensor.
Drawings
Fig. 1 is a circuit structure diagram of the voltage stabilizing unit and the control unit provided by the present invention;
fig. 2 is a circuit structure diagram of the trigger module provided by the present invention;
fig. 3 is a circuit structure diagram of the communication part provided by the present invention;
fig. 4 is a circuit structure diagram of the burning part provided by the present invention;
fig. 5 is a schematic structural diagram of the non-contact sensor calibration apparatus provided by the present invention.
Description of the main element symbols: 1-non-contact sensor, 11-communication line, 2-button tool, 21-trigger button and 22-indicator light.
Detailed Description
The utility model provides a non-contact sensor calibrating device and calibration circuit thereof, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the embodiment is compared with the figure below to refer to the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
Please refer to fig. 1 to 4, the utility model provides a calibration circuit of non-contact sensor calibration device, including sensor module and trigger module, the sensor module includes voltage stabilizing unit and control unit, the voltage stabilizing unit provides stable operating voltage for the control unit, the control unit includes first control chip U1, material induction part, temperature induction part and trigger part, pin 1 and voltage stabilizing unit of first control chip are connected, pin 5 and pin 6 of first control chip U1 are connected with the trigger part, pin 7 and material induction part of first control chip U1 are connected, pin 8 and temperature induction part of first control chip U1 are connected, the trigger part is connected with the trigger module; in this embodiment, the model of the first control chip U1 may be, but is not limited to, the PIC12F 675.
The utility model provides a calibration circuit's theory of operation as follows: the trigger module is electrified to provide a trigger signal for the sensor module, the sensor module enters a calibration state, and the material sensing part shields the capacitance value of the installation material, so that the matching problem of various materials and various capacitors is solved, namely, for different installation materials, the adjustment of the capacitance value of the non-contact sensor is not needed, and the influence of the installation material on the measurement result is eliminated, wherein the installation material is the material which is required to be installed on the non-contact sensor; the temperature sensing part detects the temperature in the non-contact sensor and performs temperature compensation, and is used for preventing capacitance value change caused by temperature fluctuation, namely the problem that the non-contact sensor is influenced by the temperature is solved, so that the detection precision of the non-contact sensor is improved.
Supposing that the optimal working state of a non-contact sensor can be achieved when the non-contact sensor works at the room temperature of 25 ℃, if the temperature is higher or lower, the parameters of the non-contact sensor are influenced, namely the measurement result is influenced; the temperature compensation means that the temperature sensing part senses the internal environment temperature of the non-contact sensor, the first control chip U1 compares the current environment temperature with the optimal room temperature, compensation is carried out according to the comparison result, if the current environment temperature is lower than the optimal room temperature, the reference value is increased, otherwise, the reference value is reduced; for example, assuming that the reference value of 25 degrees celsius of room temperature is 1000, the detection of the change of data can be realized when the data reaches 1300 degrees celsius, the reference value becomes 1200 when the actually detected internal environment temperature is 5 degrees celsius, and the detection of the change cannot be realized when the data is 1300 degrees celsius, so the reference value is compensated to 1500.
Further, referring to fig. 1, the voltage stabilizing unit includes a second control chip U2, a fifth resistor R5, a second capacitor C2 and a third capacitor C3, one end of the fifth resistor R5 is connected to a pin 2 of the second control chip U2, the other end of the fifth resistor R5 is connected to a pin 3 of the second control chip U2, one end of the second capacitor C2 is connected to a pin 2 of the second control chip U2, the other end of the second capacitor C2 is grounded, one end of the third capacitor C3 is connected to a pin 3 of the second control chip U2, the other end of the third capacitor C3 is grounded, a pin 1 of the second control chip U2 is grounded, a pin 2 of the second control chip U2 is connected to an external power source VCC, and a pin 3 of the second control chip U2 is connected to a pin 1 of the first control chip U1; in this embodiment, the second control chip U2 is an existing voltage stabilizing chip; the second capacitor C2 and the third capacitor C3 play a role of filtering and voltage stabilizing.
Further, referring to fig. 2, the trigger module includes a first communication port P1, a sixth resistor R6, a light emitting diode D1, and a key SW1, a pin 1 of the first communication port P1 is connected to an external power VCC, one end of the sixth resistor R6 is connected to the external power VCC, the other end of the sixth resistor R6 is connected to an anode of the light emitting diode D1, a cathode of the light emitting diode D1 is connected to a pin 2 of the first communication port P1, one end of the key SW1 is connected to a pin 2 of the first communication port P1, the other end of the key SW1 is grounded, and a pin 3 of the first communication port P1 is grounded; pressing the button SW1, the trigger module provides a trigger signal to the sensor module, and the sensor module enters a calibration state.
Further, referring to fig. 1, the control unit includes a sensing surface, the material sensing portion includes a second resistor R2, one end of the second resistor R2 is connected to the pin 7 of the first control chip U1, and the other end of the second resistor R2 is connected to the sensing surface; the induction surface is used for shielding the capacitance value of the material.
Further, referring to fig. 1, the temperature sensing part includes a first resistor R1, one end of the first resistor R1 is connected to the pin 8 of the first control chip U1, and the other end of the first resistor R1 is connected to the temperature detecting device; the temperature detection device is used for detecting the ambient temperature inside the non-contact sensor.
Further, referring to fig. 1, the triggering portion includes a third resistor R3, a fourth resistor R4, and a transistor Q1, wherein one end of the third resistor R3 is connected to a pin 5 of the first control chip U1, the other end of the third resistor R3 is connected to a pin 2 of the first communication port P1, one end of the fourth resistor R4 is connected to a pin 6 of the first control chip U1, the other end of the fourth resistor R4 is connected to a base of the transistor Q1, a collector of the transistor Q1 is connected to the pin 2 of the first communication port P1, and an emitter of the transistor Q1 is grounded; the trigger part controls the pin 5 of the first control chip U1 to output a high level and a low level when a signal is provided, and otherwise, outputs a high level.
Further, referring to fig. 1, the control unit further includes a first capacitor C1, one end of the first capacitor C1 is connected to the pin 2 of the first control chip U1, the other end of the first capacitor C1 is grounded, and the pin 3 of the first control chip U1 is grounded; the first capacitor C1 is an external capacitor of the first control chip U1.
Further, referring to fig. 3 and 4, the control unit further includes a communication unit and a burning unit, the communication unit includes a second communication port P2, a pin 1 of the second communication port P2 is connected to an external power VCC, a pin 2 of the second communication port P2 is connected to a pin 5 of the first control chip U1, and a pin 3 of the second communication port P2 is grounded; the burning part comprises a third communication port P3, a pin 1 of the third communication port P3 is connected with a pin 3 of a first control chip U1, a pin 2 of the third communication port P3 is connected with a pin 4 of the first control chip U1, a pin 3 of the third communication port P3 is connected with a pin 5 of the first control chip U1, and a pin 4 of the third communication port P3 is grounded; the communication part is used for realizing communication with an external controller and calibration test of the sensor module, and the burning part is used for burning a program into the first control chip U1.
Referring to fig. 5, the present invention further provides a non-contact sensor calibration apparatus, including a non-contact sensor 1 and a key tool 2, where the non-contact sensor 1 includes a first control board and a communication line 11, the first control board is provided with an induction surface and a temperature detection device, the first control board is further provided with the sensor module, the key tool 2 includes a trigger key 21, an indicator lamp 22 and a second control board, the second control board is provided with the trigger module, and the non-contact sensor 1 is connected to the key tool 2 through the communication line 11; communication line 11 includes power cord, ground wire and signal line, button frock 2 is connected with external power VCC, the response face is used for shielding the capacitance value of installation material, temperature-detecting device is used for detecting the temperature of 1 internal environment of non-contact sensor.
The utility model provides a non-contact sensor calibrating device's theory of operation as follows: the key tool 2 is connected with an external power supply VCC, the trigger key 21 is pressed, at the moment, the indicator lamp 22 is lightened, the non-contact sensor 1 and the key tool 2 are connected through the communication line 11, the non-contact sensor 1 enters a calibration state, the trigger key 21 is loosened after the non-contact sensor 1 and the key tool 2 are connected for 1-2 seconds, the indicator lamp 22 keeps lightened for a while and then is extinguished, namely the non-contact sensor 1 finishes calibration, and in the calibration process, the non-contact sensor 1 is tightly attached to the surface of an installation material.
It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a calibration circuit of non-contact sensor calibrating device, its characterized in that includes sensor module and trigger module, the sensor module includes voltage regulator unit and control unit, the voltage regulator unit provides stable operating voltage for the control unit, the control unit includes first control chip U1, material response portion, temperature response portion and trigger part, first control chip's pin 1 is connected with the voltage regulator unit, first control chip U1's pin 5 and pin 6 are connected with the trigger part, first control chip U1's pin 7 is connected with the material response portion, first control chip U1's pin 8 is connected with the temperature response portion, the trigger part is connected with the trigger module.
2. The calibration circuit of claim 1, the voltage stabilizing unit is characterized by comprising a second control chip U2, a fifth resistor R5, a second capacitor C2 and a third capacitor C3, one end of the fifth resistor R5 is connected with pin 2 of the second control chip U2, the other end of the fifth resistor R5 is connected with pin 3 of the second control chip U2, one end of the second capacitor C2 is connected with pin 2 of the second control chip U2, the other end of the second capacitor C2 is grounded, one end of the third capacitor C3 is connected with pin 3 of the second control chip U2, the other end of the third capacitor C3 is grounded, pin 1 of the second control chip U2 is grounded, pin 2 of the second control chip U2 is connected with an external power supply VCC, and pin 3 of the second control chip U2 is connected with pin 1 of the first control chip U1.
3. The calibration circuit of claim 1, wherein the trigger module comprises a first communication port P1, a sixth resistor R6, a light emitting diode D1, and a button SW1, a pin 1 of the first communication port P1 is connected to an external power VCC, one end of the sixth resistor R6 is connected to the external power VCC, the other end of the sixth resistor R6 is connected to an anode of the light emitting diode D1, a cathode of the light emitting diode D1 is connected to a pin 2 of a first communication port P1, one end of the button SW1 is connected to a pin 2 of the first communication port P1, the other end of the button SW1 is grounded, and a pin 3 of the first communication port P1 is grounded.
4. The calibration circuit of claim 1, wherein the control unit comprises a sensing surface, the material sensing portion comprises a second resistor R2, one end of the second resistor R2 is connected to pin 7 of the first control chip U1, and the other end of the second resistor R2 is connected to the sensing surface.
5. The calibration circuit of claim 1, wherein the control unit comprises a temperature detection device, the temperature sensing unit comprises a first resistor R1, one end of the first resistor R1 is connected to pin 8 of the first control chip U1, and the other end of the first resistor R1 is connected to the temperature detection device.
6. The calibration circuit of claim 3, wherein the triggering unit comprises a third resistor R3, a fourth resistor R4 and a transistor Q1, one end of the third resistor R3 is connected to pin 5 of the first control chip U1, the other end of the third resistor R3 is connected to pin 2 of the first communication port P1, one end of the fourth resistor R4 is connected to pin 6 of the first control chip U1, the other end of the fourth resistor R4 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to pin 2 of the first communication port P1, and the emitter of the transistor Q1 is grounded.
7. The calibration circuit of claim 1, wherein the control unit further comprises a first capacitor C1, one end of the first capacitor C1 is connected to pin 2 of the first control chip U1, the other end of the first capacitor C1 is connected to ground, and pin 3 of the first control chip U1 is connected to ground.
8. The calibration circuit of claim 1, wherein the control unit further comprises a communication unit and a burning unit, the communication unit comprises a second communication port P2, pin 1 of the second communication port P2 is connected to an external power source VCC, pin 2 of the second communication port P2 is connected to pin 5 of the first control chip U1, and pin 3 of the second communication port P2 is grounded; the burning part comprises a third communication port P3, a pin 1 of the third communication port P3 is connected with a pin 3 of a first control chip U1, a pin 2 of the third communication port P3 is connected with a pin 4 of the first control chip U1, a pin 3 of the third communication port P3 is connected with a pin 5 of the first control chip U1, and a pin 4 of the third communication port P3 is grounded.
9. A non-contact sensor calibration device is characterized by comprising a non-contact sensor and a key tool, wherein the non-contact sensor comprises a first control board and a communication line, a sensing surface and a temperature detection device are arranged on the first control board, a sensor module as claimed in any one of claims 1 to 8 is further arranged on the first control board, the key tool comprises a trigger key, an indicator light and a second control board, a trigger module as claimed in any one of claims 1 or 3 is arranged on the second control board, and the non-contact sensor is connected with the key tool through the communication line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207685.8U CN210922685U (en) | 2019-12-10 | 2019-12-10 | Non-contact sensor calibration device and calibration circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922207685.8U CN210922685U (en) | 2019-12-10 | 2019-12-10 | Non-contact sensor calibration device and calibration circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN210922685U true CN210922685U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922207685.8U Active CN210922685U (en) | 2019-12-10 | 2019-12-10 | Non-contact sensor calibration device and calibration circuit thereof |
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