CN114911295A - Compensation circuit, method and equipment of sensor - Google Patents
Compensation circuit, method and equipment of sensor Download PDFInfo
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- CN114911295A CN114911295A CN202110181582.8A CN202110181582A CN114911295A CN 114911295 A CN114911295 A CN 114911295A CN 202110181582 A CN202110181582 A CN 202110181582A CN 114911295 A CN114911295 A CN 114911295A
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- 230000007613 environmental effect Effects 0.000 claims abstract description 75
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000009466 transformation Effects 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 13
- 101100100146 Candida albicans NTC1 gene Proteins 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- 101710179738 6,7-dimethyl-8-ribityllumazine synthase 1 Proteins 0.000 description 1
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- 101710137584 Lipoyl synthase 1, chloroplastic Proteins 0.000 description 1
- 101710090391 Lipoyl synthase 1, mitochondrial Proteins 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
Abstract
The invention discloses a compensation circuit of a sensor, comprising: the micro-control unit, the voltage division circuit and the sensor circuit; the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input multiple groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange; the micro control unit receives an environmental parameter input by the voltage dividing circuit and a voltage signal input by the sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor.
Description
Technical Field
The invention relates to the field of sensors, in particular to a compensation circuit, a method and equipment of a sensor.
Background
The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information in a required form according to a certain rule to output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. However, the measurement accuracy of the sensor is often affected by the environment, resulting in inaccurate final measurement results. The current compensation method mainly comprises hardware compensation and software compensation.
The hardware compensation mode is mainly characterized in that the sensors are compensated by connecting the same resistors in series and parallel in the same batch of sensors, then the sensors are respectively tested, and the resistance value of the compensation resistor of each sensor is finely adjusted. But the hardware compensation mode is difficult to debug and has limited precision. The software compensation mode is to compensate the signals output by the sensor by adopting a data analysis method. At present, the more adopted algorithm models are a lookup table method, a polynomial surface fitting method, a neural network algorithm and the like, and then the algorithms are operated on a microprocessor so as to achieve the aim of sensor compensation. But the software compensation mode is complex in calculation and high in cost.
Disclosure of Invention
The embodiment of the application provides the compensation circuit, the method and the equipment of the sensor, solves the technical problems of difficulty in hardware compensation and debugging, limited precision, complex software compensation calculation and higher cost in the prior art, and achieves the technical effects of improving the precision of the sensor and reducing the design cost.
In a first aspect, the present application provides the following technical solutions through an embodiment of the present application:
a compensation circuit for a sensor, comprising:
the micro-control unit, the voltage division circuit and the sensor circuit;
the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input multiple groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange;
the micro control unit receives an environmental parameter input by the voltage dividing circuit and a voltage signal input by the sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor.
Optionally, the voltage divider circuit includes:
a constant voltage circuit and a voltage transformation circuit;
the output ends of the constant voltage circuit and the voltage transformation circuit are respectively connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters.
Optionally, the sensor is a silicon piezoresistive pressure sensor.
Optionally, the compensation circuit further includes:
and the output end of the clock circuit is connected with a clock signal interface of the micro control unit so as to provide a clock period for the micro control unit.
Optionally, the compensation circuit further includes:
and the output end of the reset circuit is connected with a reset interface of the micro control unit so as to provide a reset signal.
Optionally, the compensation circuit further includes:
and the execution circuit is connected with the output interface of the micro control unit to output a compensation prompt.
In a second aspect, the present application provides the following technical solutions according to an embodiment of the present application:
a method of compensating a sensor, comprising:
acquiring environmental parameters of the sensor;
determining a reference voltage of the sensor based on a relationship of the environmental parameter to an environmental parameter threshold;
determining a measurement of the sensor based on a relationship of the reference voltage to the sensor input voltage.
Optionally, the environmental parameter is an environmental temperature parameter.
Optionally, the determining a reference voltage of the sensor based on the relationship between the environmental parameter and an environmental parameter threshold includes:
if the environmental parameter is smaller than the environmental parameter threshold value, the reference voltage of the sensor is a first reference voltage; if the environmental parameter is greater than the environmental parameter threshold value, the reference voltage of the sensor is a second reference voltage;
wherein the environmental parameter threshold comprises one threshold or a plurality of thresholds.
In a third aspect, the present application provides an electronic device comprising the compensation circuit of the first aspect.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the embodiment of the invention discloses a compensation circuit, a method and equipment of a sensor, wherein the compensation circuit comprises: the micro-control unit, the voltage division circuit and the sensor circuit; the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange; the micro control unit receives an environmental parameter input by the voltage dividing circuit and a voltage signal input by the sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor. Therefore, the corresponding reference voltage can be selected as the reference voltage of the sensor based on different environmental parameters to improve the accuracy of the sensor, and a microprocessor is not needed for calculation compensation, thereby reducing the design cost. The technical problems of difficulty in hardware compensation and debugging, limited precision, complex software compensation and calculation and high cost in the prior art are solved, and the technical effects of improving the precision of the sensor and reducing the design cost are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a functional block diagram of a compensation circuit of a sensor according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a compensation circuit of a sensor according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for compensating a sensor according to an embodiment of the present invention;
FIG. 4 is a control flow chart of the compensation circuit shown in FIG. 2 according to an embodiment of the present invention;
fig. 5 is a structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiment of the application provides the compensation circuit, the method and the equipment of the sensor, solves the technical problems of difficulty in hardware compensation and debugging, limited precision, complex software compensation calculation and higher cost in the prior art, and achieves the technical effects of improving the precision of the sensor and reducing the design cost.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
a compensation circuit for a sensor, comprising:
the micro-control unit, the voltage division circuit and the sensor circuit;
the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange;
the micro control unit receives an environmental parameter input by the voltage dividing circuit and a voltage signal input by the sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
Example one
As shown in fig. 1, there is provided a compensation circuit 100 of a sensor, including:
a micro control unit 110, a voltage divider circuit 120 and a sensor circuit 130;
the output end of the voltage dividing circuit 120 is connected with the input interface of the micro control unit 110 to input multiple sets of reference voltages and environmental parameters; the output end of the sensor circuit 130 is connected with the input/output interface of the micro control unit 110 to realize information exchange;
the micro control unit 110 receives an environmental parameter input by the voltage dividing circuit 120 and a voltage signal input by the sensor circuit 130, and determines a reference voltage of the sensor based on the environmental parameter; the measurement result of the sensor can thus be determined based on the relation of the reference voltage and the voltage signal input by the sensor.
In a specific implementation process, as shown in fig. 2, the micro control unit is a control chip U1, which may be an AT98C52 single chip microcomputer. Of course, the control chip U1 may also be a single chip microcomputer of other types, and this embodiment is not limited. The second pin 2, the third pin 3, the fifth pin 5 and the seventh pin 7 of the control chip U1 are connected to a voltage dividing circuit, the eighteenth pin 18 and the nineteenth pin 19 of the control chip U1 are connected to a clock circuit, the reset pin 9 of the control chip U1 is connected to a reset circuit, the thirty-sixth pin 36 of the control chip U1 is connected to a sensor circuit, the twenty-third pin 23 of the control chip U1 is connected to an execution circuit, the forty-fourth pin 40 of the control chip U1 is connected to a power source VCC, the twentieth pin 20 of the control chip U1 is grounded, and the remaining floating pins of the control chip U1 are connected to the ground.
In an alternative embodiment, a voltage divider circuit includes: a constant voltage circuit and a transformation circuit. The output ends of the constant voltage circuit and the voltage transformation circuit are respectively connected with the input interface of the micro control unit so as to input multiple groups of reference voltages and environmental parameters.
In a specific implementation process, as shown in fig. 2, the constant voltage circuit includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6. One end of a first resistor R1, one end of a third resistor R3 and one end of a fifth resistor R5 are connected with a power supply VCC, the other end of the first resistor R1 is connected with one end of a second pin 2 of a control chip U1 and one end of a second resistor R2, the other end of the second resistor R2 is grounded, the other end of the third resistor R3 is connected with one end of a third pin 3 of the control chip U1 and one end of a fourth resistor R4, the other end of the fourth resistor R4 is grounded, the other end of the fifth resistor R5 is connected with one end of a fifth pin 5 of the control chip U1 and one end of a sixth resistor R6, and the other end of the sixth resistor R6 is grounded.
The voltage transformation circuit includes: the first sensor NTC1 and the seventh resistor R7. The other end of the seventh resistor R7 is connected to the seventh pin 7 of the control chip U1 and one end of the first sensor NTC1, and the other end of the first sensor NTC1 is grounded.
In an alternative embodiment, the sensor in the sensor circuit is a silicon piezoresistive pressure sensor, but may also be a thermal sensor, a photosensitive element, a gas sensor, a force sensor, a magnetic sensor, a humidity sensor, a sound sensor, a radiation sensor, a color sensor, a smell sensor, and the like, which is not limited in this embodiment.
In a specific implementation, as shown in fig. 2, the sensor circuit includes: an eleventh resistor R11 and a sensor chip LS 1. The sensor chip LS1 is connected to one end of an eleventh resistor R11, and the other end of the eleventh resistor R11 is connected to the thirty-sixth pin 36 of the control chip U1.
In an alternative embodiment, as shown in fig. 1, the compensation circuit 100 further includes: a clock circuit 140, an output of the clock circuit 140 is interfaced with a clock signal of the mcu 110 to provide clock cycles to the mcu 110.
In a specific implementation, as shown in fig. 2, the clock circuit includes: crystal oscillator Y1, first capacitor C1 and second capacitor C2. One end of the crystal oscillator Y1 is connected to the nineteenth pin 19 of the control chip U1 and one end of the first capacitor C1, the other end of the crystal oscillator Y1 is connected to the eighteenth pin 18 and one end of the second capacitor C2, and the other ends of the first capacitor C1 and the second capacitor C2 are grounded. Wherein, the crystal oscillator Y1 outputs clock signals to provide clock cycles for the control chip U1; the first capacitor C1 and the second capacitor C2 are used for stabilizing the frequency of the clock signal output by the crystal oscillator Y1. Of course, the two terminals of the crystal oscillator Y1 may not be connected to the first capacitor C1 and the second capacitor C2, and the embodiment is not limited.
In an alternative embodiment, as shown in fig. 1, the compensation circuit 100 further includes: and the output end of the reset circuit 150 is connected with a reset interface of the micro control unit 110 to provide a reset signal.
In a specific implementation process, as shown in fig. 2, the reset circuit includes: the switch circuit comprises a polar capacitor C3, a push-button switch S1, an eighth resistor R8 and a ninth resistor R9. The positive terminal of the polar capacitor C3 is connected with one end of the button switch S1 and the power supply VCC, the other end of the button switch S1 is connected with one end of the eighth resistor R8, the other end of the eighth resistor 8 is connected with the negative terminal of the polar capacitor C3, one end of the ninth resistor R9 and the reset pin 9 of the control chip U1, and the other end of the ninth resistor R9 is grounded. Of course, other types of circuits may be used to provide the reset signal to the control chip U1, and the embodiment is not limited.
In an alternative embodiment, as shown in fig. 1, the compensation circuit 100 further includes: the execution circuit 160. The execution circuit 160 is connected to the output interface of the micro control unit 110 to output the compensation prompt.
In a specific implementation, as shown in fig. 2, the execution circuit includes: a tenth resistor R10, a power tube NPN and a Speaker. One end of the Speaker is connected with the power supply VCC, the other end of the Speaker is connected with the source electrode of the power tube NPN, the drain of the power tube NPN is grounded, the gate of the power tube NPN is connected with one end of the tenth resistor R10, and the other end of the tenth resistor R10 is connected with the twenty-third pin 23 of the control chip U1. Of course, the Speaker may also be a light bulb or other components that can play a role in prompting, and the embodiment is not limited.
Example two
As shown in fig. 3, the present embodiment provides a compensation method for a sensor, including:
step S301, acquiring environmental parameters of a sensor;
step S302, determining a reference voltage of the sensor based on the relation between the environmental parameter and the environmental parameter threshold;
in step S303, the measurement result of the sensor is determined based on the relationship between the reference voltage and the sensor input voltage.
In an alternative embodiment, the environmental parameter is an ambient temperature parameter. Of course, the environmental parameter may also be a radiation parameter, an air pressure parameter, a humidity parameter, etc., and the embodiment is not limited.
In an alternative embodiment, determining the reference voltage of the sensor based on the relationship of the environmental parameter to the environmental parameter threshold comprises: if the environmental parameter is smaller than the environmental parameter threshold value, the reference voltage of the sensor is a first reference voltage; if the environmental parameter is greater than the environmental parameter threshold value, the reference voltage of the sensor is a second reference voltage; wherein the environmental parameter threshold comprises one threshold or a plurality of thresholds.
For example, when the environmental parameter threshold is the upper and lower limit thresholds of the environmental parameter and the compensation circuit thereof is shown in fig. 2, the control flow is shown in fig. 4, and includes:
first, an environmental parameter upper threshold and an environmental parameter lower threshold are preset in the control chip U1.
Then, an appropriate resistance value of the voltage dividing resistor is set (the voltage dividing circuit may output different reference voltages, i.e., the first reference voltage, the second reference voltage, and the third reference voltage).
Next, the first sensor NTC1 inputs environmental parameters.
Finally, the control chip U1 internal logic judges. Determining a reference voltage of the sensor based on a relationship of the environmental parameter to an environmental parameter threshold, determining a measurement of the sensor based on a relationship of the reference voltage to a sensor input voltage, comprising:
when the environmental parameter input by the first sensor NTC1 is larger than the preset environmental parameter upper limit threshold, taking the R1/R2 branch voltage (first reference voltage) as the reference voltage of the sensor chip, and determining the measurement result of the sensor based on the relation between the reference voltage and the input voltage of the sensor chip;
when the environmental parameter input by the NTC1 of the first sensor is between the upper and lower limit thresholds of the preset environmental parameter, the R3/R4 branch voltage (second reference voltage) is used as the reference voltage of the sensor chip, and the measurement result of the sensor is determined based on the relation between the reference voltage and the input voltage of the sensor chip;
when the environmental parameter input by the first sensor NTC1 is less than the preset environmental parameter lower limit threshold, the R5/R6 branch voltage (third reference voltage) is used as the reference voltage of the sensor chip, and the measurement result of the sensor is determined based on the relation between the reference voltage and the input voltage of the sensor chip.
EXAMPLE III
Based on the same inventive concept, as shown in fig. 5, the present embodiment provides an electronic device including the compensation circuit according to any one of the embodiments.
Since the electronic device described in this embodiment is an electronic device used for implementing the compensation circuit of the sensor in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various modifications thereof based on the compensation circuit of the sensor described in this embodiment, and therefore, a detailed description of how to implement the method in this embodiment of the present application by the electronic device is omitted here. The electronic devices used by those skilled in the art to implement the compensation circuit of the sensor in the embodiments of the present application are all within the scope of the present application.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the embodiment of the invention discloses a compensation circuit, a method and equipment of a sensor, wherein the compensation circuit comprises: the micro-control unit, the voltage division circuit and the sensor circuit; the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange; the micro control unit receives an environmental parameter input by a voltage dividing circuit and a voltage signal input by a sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor. Therefore, the corresponding reference voltage can be selected as the reference voltage of the sensor based on different environmental parameters to improve the accuracy of the sensor, and a microprocessor is not needed for calculation compensation, thereby reducing the design cost. The technical problems of difficulty in hardware compensation and debugging, limited precision, complex software compensation and calculation and high cost in the prior art are solved, and the technical effects of improving the precision of the sensor and reducing the design cost are achieved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A compensation circuit for a sensor, comprising:
the micro-control unit, the voltage division circuit and the sensor circuit;
the output end of the voltage division circuit is connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters; the output end of the sensor circuit is connected with the input and output interface of the micro control unit to realize information exchange;
the micro control unit receives an environmental parameter input by the voltage dividing circuit and a voltage signal input by the sensor circuit, and determines a reference voltage of the sensor based on the environmental parameter; the measurement of the sensor can thus be determined based on the relation of the reference voltage to the voltage signal input by the sensor.
2. The circuit of claim 1, wherein the voltage divider circuit comprises:
a constant voltage circuit and a voltage transformation circuit;
the output ends of the constant voltage circuit and the voltage transformation circuit are respectively connected with the input interface of the micro control unit so as to input a plurality of groups of reference voltages and environmental parameters.
3. The circuit of claim 1, wherein the sensor is a silicon piezoresistive pressure sensor.
4. The circuit of claim 1, further comprising:
and the output end of the clock circuit is connected with a clock signal interface of the micro control unit so as to provide a clock period for the micro control unit.
5. The circuit of claim 1, further comprising:
and the output end of the reset circuit is connected with a reset interface of the micro control unit so as to provide a reset signal.
6. The circuit of claim 1, further comprising:
and the execution circuit is connected with the output interface of the micro control unit to output a compensation prompt.
7. A method of compensating a sensor, comprising:
acquiring environmental parameters of the sensor;
determining a reference voltage of the sensor based on a relationship of the environmental parameter to an environmental parameter threshold;
determining a measurement of the sensor based on a relationship of the reference voltage to the sensor input voltage.
8. The method of claim 7, wherein the environmental parameter is an environmental temperature parameter.
9. The method of claim 7, wherein determining the reference voltage of the sensor based on the relationship of the environmental parameter to an environmental parameter threshold comprises:
if the environmental parameter is smaller than the environmental parameter threshold value, the reference voltage of the sensor is a first reference voltage; if the environmental parameter is larger than the environmental parameter threshold value, the reference voltage of the sensor is a second reference voltage;
wherein the environmental parameter threshold comprises one threshold or a plurality of thresholds.
10. An electronic device, characterized in that it comprises a compensation circuit according to any one of claims 1-6.
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| CN202110181582.8A CN114911295A (en) | 2021-02-09 | 2021-02-09 | Compensation circuit, method and equipment of sensor |
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| CN202110181582.8A CN114911295A (en) | 2021-02-09 | 2021-02-09 | Compensation circuit, method and equipment of sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592527A (en) * | 2009-04-09 | 2009-12-02 | 上海微电子装备有限公司 | Multichannel temperature acquisition system |
| CN102156019A (en) * | 2011-03-28 | 2011-08-17 | 豪展医疗科技股份有限公司 | Pressure sensor |
| CN102506982A (en) * | 2011-10-19 | 2012-06-20 | 深圳市杰曼科技有限公司 | Automatic compensating signal acquiring system |
| CN103245328A (en) * | 2013-04-16 | 2013-08-14 | 河南中光学集团有限公司 | Automatic universal digital attitude measuring circuit |
| CN103791944A (en) * | 2012-11-02 | 2014-05-14 | 上海微电子装备有限公司 | High-precision general measurement device |
| CN107192471A (en) * | 2017-04-13 | 2017-09-22 | 南京史利姆电子科技有限公司 | A kind of New temperature compensation circuit and compensation method for pneumatic sensor |
| CN210109595U (en) * | 2019-06-28 | 2020-02-21 | 深圳和而泰智能控制股份有限公司 | Environmental index acquisition circuit and equipment |
-
2021
- 2021-02-09 CN CN202110181582.8A patent/CN114911295A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592527A (en) * | 2009-04-09 | 2009-12-02 | 上海微电子装备有限公司 | Multichannel temperature acquisition system |
| CN102156019A (en) * | 2011-03-28 | 2011-08-17 | 豪展医疗科技股份有限公司 | Pressure sensor |
| CN102506982A (en) * | 2011-10-19 | 2012-06-20 | 深圳市杰曼科技有限公司 | Automatic compensating signal acquiring system |
| CN103791944A (en) * | 2012-11-02 | 2014-05-14 | 上海微电子装备有限公司 | High-precision general measurement device |
| CN103245328A (en) * | 2013-04-16 | 2013-08-14 | 河南中光学集团有限公司 | Automatic universal digital attitude measuring circuit |
| CN107192471A (en) * | 2017-04-13 | 2017-09-22 | 南京史利姆电子科技有限公司 | A kind of New temperature compensation circuit and compensation method for pneumatic sensor |
| CN210109595U (en) * | 2019-06-28 | 2020-02-21 | 深圳和而泰智能控制股份有限公司 | Environmental index acquisition circuit and equipment |
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