CN216483133U - Sensor adaptation system - Google Patents
Sensor adaptation system Download PDFInfo
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- CN216483133U CN216483133U CN202123112670.7U CN202123112670U CN216483133U CN 216483133 U CN216483133 U CN 216483133U CN 202123112670 U CN202123112670 U CN 202123112670U CN 216483133 U CN216483133 U CN 216483133U
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Abstract
The utility model discloses a sensor adaptation system, which comprises a sensor, a current source, a voltage source, a low-pass filter, an analog-to-digital converter and a controller; the sensor is respectively and electrically connected with the current source, the voltage source and the low-pass filter, the low-pass filter is electrically connected with the analog-to-digital converter, the analog-to-digital converter is electrically connected with the controller, and the controller is respectively and electrically connected with the current source and the voltage source. The utility model discloses be provided with controllable voltage source and electric current source, through dynamic configuration voltage source or electric current source to the adaptation possesses stronger commonality and flexibility in the sensor of difference.
Description
Technical Field
The utility model belongs to electron technology and sensor adaptation field, concretely relates to sensor adaptation system.
Background
In the prior art, IEPE (integrated Electronic Piezoelectric) sensors are classified into current type sensors that drive the sensors by supplying a constant current through an operational amplifier circuit, and voltage type sensors that supply an operating voltage to the sensors through an external power supply circuit.
The current type sensor generally needs to provide a constant driving current of 4 mA-20 mA, and the driving currents of different sensors are different in size; the driving current is not consistent in different application occasions. However, in the prior art, a fixed constant current source is generally adopted, and the constant current source needs to be replaced on different occasions and under the condition of different sensors, so that the flexibility and the universality are not realized.
The voltage type sensor generally needs to provide a voltage source of +/-5V to +/-12V, and different sensors have different driving voltages. However, in the prior art, a fixed voltage source is generally adopted, and the voltage source needs to be replaced on different occasions and under the condition of different sensors, so that the flexibility and the universality are not provided.
Therefore, the conventional IEPE sensor has the disadvantages of poor versatility and poor flexibility, and needs to be designed in a customized manner according to different application environments, resulting in high maintenance cost and low test efficiency.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough among the prior art, the utility model provides a pair of sensor adaptation system has solved the problem that exists among the prior art.
In order to achieve the purpose of the invention, the utility model adopts the technical scheme that: a sensor adaptation system comprises a sensor, a current source, a voltage source, a low-pass filter, an analog-to-digital converter and a controller;
the sensor is respectively and electrically connected with the current source, the voltage source and the low-pass filter, the low-pass filter is electrically connected with the analog-to-digital converter, the analog-to-digital converter is electrically connected with the controller, and the controller is respectively and electrically connected with the current source and the voltage source.
Further, the current source comprises a first digital-to-analog converter, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a field effect transistor Q1, a triode Q2 and a current output chip U1;
input and controller electric connection of first digital-to-analog converter, the output of first digital-to-analog converter is connected with current output chip U1's SET pin, current output chip U1's VSP pin is connected with VCC contact, electric capacity C1's one end and electric capacity C3's one end respectively, electric capacity C1's the other end and electric capacity C3's the other end all ground connection, current output chip U1's REFF pin is connected with resistance R2's one end and resistance R4's one end respectively, resistance R2's one end and resistance R4's one end are connected to resistance R2, the REGS pin of the current output chip U1 is connected with the other end of the resistor R4, one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 and the other end of the capacitor C2 are both grounded, the VIN pin of the current output chip U1 is connected with the REF1 contact, the EP pin and the GND pin of the current output chip U1 are both grounded, the OD pin of the current output chip U1 is connected with one end of the resistor R1, the other end of the resistor R1 is grounded, and the current output chip U1 is connected with the VCC contact
The pin IS connected with resistance R3's one end, resistance R3's the other end IS connected with the VCC contact, current output chip U1's IS pin IS connected with triode Q2's projecting pole and resistance R5's one end respectively, resistance R5's the other end IS connected with triode Q2's base and field effect transistor Q1's source respectively, field effect transistor Q1's drain electrode IS connected with A1 contact, current output chip U1's VG pin IS connected with triode Q2's collecting electrode and field effect transistor Q1's grid respectively.
Furthermore, the model of the current output chip U1 is XTR111A, the model of the field effect transistor Q1 is BSS308PEH6327, and the model of the triode Q2 is BC 856B-7-F.
Further, the voltage source comprises a second digital-to-analog converter, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, an amplifier U2 and an amplifier U3;
the input end of the second digital-to-analog converter is electrically connected with the controller, the output end of the second digital-to-analog converter is connected with an-IN pin of an amplifier U2, a Vout pin of the amplifier U2 is connected with one end of a resistor R9 and one end of a resistor R12 respectively, the other end of the resistor R12 is connected with an A2 joint, a + IN pin of the amplifier U2 is connected with one end of a resistor R8 and the other end of the resistor R9 respectively, the other end of the resistor R8 is connected with one end of a resistor R11, the other end of the resistor R11 is connected with a Vout pin of an amplifier U3 and one end of a resistor R7 respectively, the other end of the resistor R7 is connected with one end of a + IN pin of the amplifier U3 and one end of a resistor R10 respectively, an-IN pin of the amplifier U3 is grounded, and the other end of the resistor R10 is connected with a REF2 joint.
Further, the type of the amplifier U2 is ADA4841, and the type of the amplifier U3 is ADA 4841.
Furthermore, the a1 contact is connected to the 2 nd pin and the 7 th pin of the switch K1, the a2 contact is connected to the 4 th pin and the 5 th pin of the switch K1, the 3 rd pin of the switch K1 is electrically connected to the sensor, and the 6 th pin of the switch K1 is electrically connected to the low pass filter.
Further, the switch K1 is of the type IM01 GR.
Further, the VCC contact is connected to a +12V voltage, the REF1 contact is connected to a first reference voltage, and the REF2 contact is connected to a second reference voltage.
The beneficial effects of the utility model are that:
(1) the utility model provides a sensor adaptation system is provided with controllable voltage source and electric current source, through dynamic configuration voltage source or electric current source to adaptation in different sensors possesses stronger commonality and flexibility.
(2) The utility model discloses a circuit principle is simple, and easily batch production has practiced thrift the cost, has improved the efficiency of adaptation sensor, possesses wide application prospect.
Drawings
Fig. 1 is a block diagram of a sensor adaptation system according to an embodiment of the present application.
Fig. 2 is a circuit diagram of a current source according to an embodiment of the present application.
Fig. 3 is a circuit diagram of a voltage source according to an embodiment of the present application.
Fig. 4 is a connection circuit diagram of a sensor current source and a power source provided in an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.
The following describes embodiments of the present invention in detail with reference to the drawings.
As shown in fig. 1, a sensor adaptation system includes a sensor, a current source, a voltage source, a low pass filter, an analog-to-digital converter, and a controller; the sensor is respectively and electrically connected with the current source, the voltage source and the low-pass filter, the low-pass filter is electrically connected with the analog-to-digital converter, the analog-to-digital converter is electrically connected with the controller, and the controller is respectively and electrically connected with the current source and the voltage source.
In this embodiment, the analog-to-digital converter is used to convert the analog signal generated by the sensor into a digital signal, and transmit the digital signal to the low-pass filter.
Optionally, the controller may be a single chip microcomputer or a programmable logic controller. It should be noted that, when the controller is a single chip microcomputer, the controller should further include a peripheral circuit for supporting normal operation of the single chip microcomputer.
As shown in fig. 2, the current source includes a first digital-to-analog converter, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a field-effect transistor Q1, a transistor Q2, and a current output chip U1.
The input end of the first digital-to-analog converter is electrically connected with the controller, the output end of the first digital-to-analog converter is connected with a SET pin of a current output chip U1, a VSP pin of the current output chip U1 is respectively connected with a VCC contact, one end of a capacitor C1 and one end of a capacitor C3, the other end of the capacitor C1 and the other end of the capacitor C3 are both grounded, a REGF pin of the current output chip U1 is respectively connected with one end of a resistor R2 and one end of a resistor R4, the other end of the resistor R2 is connected with the VCC contact, a REGS pin of the current output chip U1 is respectively connected with the other end of a resistor R4, one end of a capacitor C2 and one end of a resistor R6, and the other end of the resistor R6 is connected with the VCC contactOne end of the current output chip U1 and the other end of the capacitor C2 are grounded, a VIN pin of the current output chip U1 is connected with a REF1 joint, an EP pin and a GND pin of the current output chip U1 are grounded, an OD pin of the current output chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is grounded, and the other end of the current output chip U1 is grounded
The pin IS connected with resistance R3's one end, resistance R3's the other end IS connected with the VCC contact, current output chip U1's IS pin IS connected with triode Q2's projecting pole and resistance R5's one end respectively, resistance R5's the other end IS connected with triode Q2's base and field effect transistor Q1's source respectively, field effect transistor Q1's drain electrode IS connected with A1 contact, current output chip U1's VG pin IS connected with triode Q2's collecting electrode and field effect transistor Q1's grid respectively.
In this embodiment, the first digital-to-analog converter is configured to convert the digital signal generated by the controller into an analog signal and transmit the analog signal to the current source. The first digital-to-analog converter is of the type DAC084S 085.
In one possible implementation, the current output chip U1 is of the type XTR111A, the fet Q1 is of the type BSS308PEH6327, and the transistor Q2 is of the type BC 856B-7-F.
As shown in fig. 3, the voltage source includes a second digital-to-analog converter, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, an amplifier U2, and an amplifier U3.
The input end of the second digital-to-analog converter is electrically connected with the controller, the output end of the second digital-to-analog converter is connected with an-IN pin of an amplifier U2, a Vout pin of the amplifier U2 is respectively connected with one end of a resistor R9 and one end of a resistor R12, the other end of the resistor R12 is connected with an A2 joint, a + IN pin of the amplifier U2 is respectively connected with one end of a resistor R8 and the other end of the resistor R9, the other end of the resistor R8 is connected with one end of a resistor R11, the other end of the resistor R11 is respectively connected with a Vout pin of an amplifier U3 and one end of a resistor R7, the other end of the resistor R7 is respectively connected with the + IN pin of the amplifier U3 and one end of the resistor R10, the-IN pin of the amplifier U3 is grounded, and the other end of the resistor R10 is connected with an 2 joint.
In this embodiment, the second digital-to-analog converter is used for converting the digital signal generated by the controller into an analog signal and transmitting the analog signal to the voltage source. The second digital-to-analog converter is of the type DAC084S 085.
In one possible embodiment, the amplifier U2 is of the type ADA4841 and the amplifier U3 is of the type ADA 4841.
In this embodiment, the V + pin of amplifier U2 may be connected to a +12V voltage, the V-pin of amplifier U2 may be connected to a-12V voltage, and the V-pin of amplifier U2 may be connected to a +12V voltage
The pin may be grounded. The V + pin of amplifier U3 may be connected to a +12V voltage, the V-pin of amplifier U3 may be connected to a-12V voltage, and the V-pin of amplifier U3
The pin may be grounded.
In a possible embodiment, the a1 contact is connected to the 2 nd pin and the 7 th pin of the switch K1, the a2 contact is connected to the 4 th pin and the 5 th pin of the switch K1, the 3 rd pin of the switch K1 is electrically connected to the sensor, and the 6 th pin of the switch K1 is electrically connected to the low pass filter.
In one possible embodiment, the switch K1 is of the type IM01 GR. The 1 st pin and the 8 th pin of the switch K1 are electrically connected to the GPIO function interface of the controller.
In one possible implementation, the VCC contact is connected to a +12V voltage, the REF1 contact is connected to a first reference voltage, and the REF2 contact is connected to a second reference voltage.
In the present embodiment, the first reference voltage and the second reference voltage are both set to 5V.
The utility model provides a sensor adaptation system is provided with controllable voltage source and electric current source, through dynamic configuration voltage source or electric current source to adaptation in different sensors possesses stronger commonality and flexibility. The utility model discloses a circuit principle is simple, and easily batch production has practiced thrift the cost, has improved the efficiency of adaptation sensor, possesses wide application prospect.
The utility model discloses a theory of operation does:
step one, determining the output voltage of a voltage source or determining the output current of a current source.
And step two, outputting a first digital control signal to a first digital-to-analog converter through the controller according to the output current of the current source, converting the first digital control signal into a first analog signal through the first digital-to-analog converter, and converting the first analog signal into the output current of the current source through a circuit composed of a current output chip U1 and other electronic components.
Or, according to the output voltage of the voltage source, the controller outputs a second digital control signal to the second digital-to-analog converter, the second digital control signal is converted into a second analog signal by the second digital-to-analog converter, and the second analog signal is converted into the output voltage of the voltage source by a circuit composed of the amplifier U2, the amplifier U3 and other electronic components.
And step three, applying the output voltage of the voltage source or the output current of the current source to the output end of the sensor, so that the sensor can work normally.
And step four, acquiring sensing data through a sensor.
And fifthly, filtering the sensing data through a low-pass filter to obtain filtered sensing data.
And step six, converting the filtered sensing data into digital signals through an analog-to-digital converter, and transmitting the digital signals to a controller for processing.
Claims (8)
1. A sensor adaptation system is characterized by comprising a sensor, a current source, a voltage source, a low-pass filter, an analog-to-digital converter and a controller;
the sensor is respectively and electrically connected with the current source, the voltage source and the low-pass filter, the low-pass filter is electrically connected with the analog-to-digital converter, the analog-to-digital converter is electrically connected with the controller, and the controller is respectively and electrically connected with the current source and the voltage source.
2. The sensor adapting system according to claim 1, wherein the current source comprises a first digital-to-analog converter, a capacitor C1, a capacitor C2, a capacitor C3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a field effect transistor Q1, a transistor Q2, and a current output chip U1;
the input end of the first digital-to-analog converter is electrically connected with the controller, the output end of the first digital-to-analog converter is connected with the SET pin of the current output chip U1, the VSP pin of the current output chip U1 is respectively connected with a VCC contact, one end of a capacitor C1 and one end of a capacitor C3, the other end of the capacitor C1 and the other end of the capacitor C3 are grounded, the REFF pin of the current output chip U1 is respectively connected with one end of a resistor R2 and one end of a resistor R4, the other end of the resistor R2 is connected with the VCC contact, the REGS pin of the current output chip U1 is respectively connected with the other end of a resistor R4, one end of a capacitor C2 and one end of a resistor R6, the other end of a resistor R6 and the other end of the capacitor C2 are grounded, the VIN pin of the current output chip U1 is connected with a REF1 contact, the EP pin and the GND pin of the current output chip U1 are grounded, the OD pin of the current output chip U1 is connected with one end of a resistor R1, the other end of the resistor R1 is grounded, and the current output chip U1 is connected with the other end of the resistor R1
The pin IS connected with one end of a resistor R3, the other end of the resistor R3 IS connected with a VCC contact, an IS pin of a current output chip U1 IS respectively connected with an emitter of a triode Q2 and one end of a resistor R5, the other end of the resistor R5 IS respectively connected with a base of a triode Q2 and a source of a field effect transistor Q1, a drain of the field effect transistor Q1 IS connected with an A1 contact, and a VG pin of the current output chip U1 IS connected with a VG contactRespectively connected with the collector of the triode Q2 and the gate of the field effect transistor Q1.
3. The sensor adaptation system of claim 2, wherein the current output chip U1 is of the type XTR111A, the fet Q1 is of the type BSS308PEH6327, and the transistor Q2 is of the type BC 856B-7-F.
4. The sensor adapting system according to claim 2, wherein the voltage source comprises a second digital-to-analog converter, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, an amplifier U2, and an amplifier U3;
the input end of the second digital-to-analog converter is electrically connected with the controller, the output end of the second digital-to-analog converter is connected with an-IN pin of an amplifier U2, a Vout pin of the amplifier U2 is respectively connected with one end of a resistor R9 and one end of a resistor R12, the other end of the resistor R12 is connected with an A2 joint, a + IN pin of the amplifier U2 is respectively connected with one end of a resistor R8 and the other end of the resistor R9, the other end of the resistor R8 is connected with one end of a resistor R11, the other end of the resistor R11 is respectively connected with a Vout pin of an amplifier U3 and one end of a resistor R7, the other end of the resistor R7 is respectively connected with the + IN pin of the amplifier U3 and one end of the resistor R10, the-IN pin of the amplifier U3 is grounded, and the other end of the resistor R10 is connected with an 2 joint.
5. The sensor adaptation system of claim 4, wherein the amplifier U2 is of the type ADA4841 and the amplifier U3 is of the type ADA 4841.
6. The sensor adapting system according to claim 4, wherein the A1 contact is connected to pins 2 and 7 of a switch K1, the A2 contact is connected to pins 4 and 5 of a switch K1, the pin 3 of the switch K1 is electrically connected to the sensor, and the pin 6 of the switch K1 is electrically connected to the low pass filter.
7. The sensor adapting system according to claim 6, wherein the switch K1 is of the type IM01 GR.
8. The sensor adapting system according to claim 4, wherein the VCC contact is connected to a +12V voltage, the REF1 contact is connected to a first reference voltage, and the REF2 contact is connected to a second reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123112670.7U CN216483133U (en) | 2021-12-10 | 2021-12-10 | Sensor adaptation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123112670.7U CN216483133U (en) | 2021-12-10 | 2021-12-10 | Sensor adaptation system |
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| Publication Number | Publication Date |
|---|---|
| CN216483133U true CN216483133U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123112670.7U Active CN216483133U (en) | 2021-12-10 | 2021-12-10 | Sensor adaptation system |
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| CN (1) | CN216483133U (en) |
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2021
- 2021-12-10 CN CN202123112670.7U patent/CN216483133U/en active Active
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