CN209514448U - A kind of nonpolarity constant current source power supply circuit of acceleration transducer - Google Patents
A kind of nonpolarity constant current source power supply circuit of acceleration transducer Download PDFInfo
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- CN209514448U CN209514448U CN201920580636.6U CN201920580636U CN209514448U CN 209514448 U CN209514448 U CN 209514448U CN 201920580636 U CN201920580636 U CN 201920580636U CN 209514448 U CN209514448 U CN 209514448U
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Abstract
The utility model discloses a kind of nonpolarity constant current source power supply circuits of acceleration transducer of sensor circuit technical field, including acceleration sensor circuit, the power input of acceleration sensor circuit is connect by power polarity conversion circuit with nonpolarity constant-current source, power polarity conversion circuit includes electric bridge, two input terminals of electric bridge connect two power ends of nonpolarity constant-current source, the power input of two output ends connection acceleration sensor circuit of electric bridge.Common IEPE acceleration transducer is compatible with the positive and negative mode of connection of electric power polarity by the utility model; avoid wiring error damage power-supply device and sensor; it to protection power source equipment and sensor internal circuit, realizes power supply and realizes nonpolarity power supply, and saved circuit design cost.
Description
Technical field
The utility model relates to sensor circuit technical fields, in particular to a kind of nothing of acceleration transducer
Polarity constant current source power supply circuit.
Background technique
IEPE acceleration transducer is widely used in the multiple fields such as industrial, military, aviation, equipment is monitored,
Detection.The power supply major way of IEPE acceleration transducer is two-wire system constant current source power supply, and electric power polarity is divided into positive and negative two
Polarity, access need to distinguish corresponding access when acquiring equipment.During the installation process, be easy it is reversed, it is reversed to will lead to equipment and biography
The damage of sensor influences the normal use of equipment, has in turn resulted in the resource and cost waste of product.
Drawbacks described above is worth improving.
Summary of the invention
In order to overcome the shortcomings of existing technology, the utility model provides a kind of nonpolarity constant-current source of acceleration transducer
Power supply circuit.
Technical solutions of the utility model are as described below:
A kind of nonpolarity constant current source power supply circuit of acceleration transducer, including acceleration sensor circuit, feature exist
In the power input of the acceleration sensor circuit is connect by power polarity conversion circuit with nonpolarity constant-current source, institute
Stating power polarity conversion circuit includes electric bridge, and two input terminals of the electric bridge connect two power supplys of the nonpolarity constant-current source
End, two output ends of the electric bridge connect the power input of the acceleration sensor circuit.
According to the utility model of above scheme, which is characterized in that the electric bridge includes the first rectification two being serially connected
Pole pipe, the second rectifier diode, third rectifier diode and the 4th rectifier diode.
Further, an output end of the nonpolarity constant-current source connects anode and the institute of first rectifier diode
The cathode of the 4th rectifier diode is stated, the another output of the nonpolarity constant-current source connects second rectifier diode
The cathode of anode and third rectifier diode, the cathode of the cathode of first rectifier diode and second rectifier diode
It is connect with a power input of the acceleration sensor circuit, the anode of the 4th rectifier diode and the third
The anode of rectifier diode is connect with another power input of the acceleration sensor circuit.
According to the utility model of above scheme, which is characterized in that the acceleration sensor circuit is IEPE acceleration
Sensor circuit.
According to the utility model of above scheme, the beneficial effect is that, the utility model passes common IEPE acceleration
Sensor is compatible with the positive and negative mode of connection of electric power polarity, wiring error damage power-supply device and sensor is avoided, so that protection power source is set
Standby and sensor internal circuit；By the addition of electric bridge, so that power supply realizes nonpolarity power supply, and bridge structure not will increase biography
The complexity of system acceleration sensor circuit, has saved circuit design cost.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
With reference to the accompanying drawing and the utility model is further described in embodiment:
As shown in Figure 1, a kind of nonpolarity constant current source power supply circuit of acceleration transducer, including acceleration transducer electricity
Road, the acceleration sensor circuit are IEPE acceleration sensor circuit, and power input passes through power polarity conversion circuit
It is connect with nonpolarity constant-current source U.
Power polarity conversion circuit includes electric bridge DQ, and two input terminals of electric bridge DQ connect two of nonpolarity constant-current source U
Power end, the power input U+ and U- of two output ends connection acceleration sensor circuit of electric bridge DQ.Electric bridge DQ includes phase
Mutual concatenated first rectifier diode DQ1, the second rectifier diode DQ2, two poles of the rectification of third rectifier diode DQ3 and the 4th
Pipe DQ4.It is specific:
An output end of nonpolarity constant-current source U connects the anode and the 4th rectifier diode of the first rectifier diode DQ1
The cathode of DQ4, the another output of nonpolarity constant-current source U connect anode and the third rectification two of the second rectifier diode DQ2
The cathode of pole pipe DQ3, the cathode and acceleration transducer of the cathode of the first rectifier diode DQ1 and the second rectifier diode DQ2
The anode of one power input U+ connection of circuit, the anode of the 4th rectifier diode DQ4 and third rectifier diode DQ3 with
Another power input U- connection of acceleration sensor circuit.
In acceleration sensor circuit, the cathode of a power input U+ and the second diode D2, triode Q2
Emitter, the 6th capacitor C6, the 6th resistance R6, the cathode of first diode D1, the 5th capacitor C5, the 4th capacitor C4, third electricity
Hold C3, the second capacitor C2 connection, the yin of the anode of another power input U- and the second diode D2, the 4th diode D4
Pole, the 7th capacitor C7 and sensing components Pizero ceramic one end connect and ground.
The other end and field-effect tube Q1 of the other end of the base stage of triode Q2 and the 6th capacitor C6, the 6th resistance R6
Drain electrode connection, the grid of field-effect tube Q1 connect with one end of the other end of the 7th capacitor C7, the 5th resistance R5, field-effect tube
The source electrode of Q1 is connect with the anode of third diode D3, and the cathode of third diode D3 is connect with the anode of the 4th diode D4.
The other end, the 4th capacitor C4 of the other end of the other end of 5th resistance R5 and the second capacitor C2, third capacitor C3
The other end, the 4th resistance R4 and first capacitor C1 connection.The other end of the other end of 4th resistance R4 and the 5th capacitor C5,
Second resistance R2 and first resistor R1 connection, the other end of second resistance R2 are connect with the anode of first diode D1, and first
The other end of resistance R1 is grounded.The other end of first capacitor C1 is by 3rd resistor R3 and sensing components Pizero ceramic
The other end connection.
During the realization of the utility model, 1,3 ends of electric bridge DQ are the input terminals of power-supply device, and 2,4 ends are output
It holds (i.e. the supply input of acceleration sensor circuit).When 1 end of electric bridge DQ is U+, and 3 ends are U-, the first rectifier diode
DQ1, third rectifier diode DQ3 conducting, making the 2 end U+ of electric bridge DQ, 4 ends is U-, and vice versa.The utility model can increase
Power-up bridge circuit can be compatible with the positive and negative polar input of power supply completely.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Illustrative description is carried out to the utility model patent above in conjunction with attached drawing, it is clear that the reality of the utility model patent
It is now not subject to the restrictions described above, as long as being carried out using the method concept and technical solution of the utility model patent various
Improve, or it is not improved the conception and technical scheme of the utility model patent are directly applied into other occasions, in this reality
With in novel protection scope.
Claims (4)
1. a kind of nonpolarity constant current source power supply circuit of acceleration transducer, including acceleration sensor circuit, which is characterized in that
The power input of the acceleration sensor circuit is connect by power polarity conversion circuit with nonpolarity constant-current source, the electricity
Source polarity conversion circuit includes electric bridge, and two input terminals of the electric bridge connect two power ends of the nonpolarity constant-current source,
Two output ends of the electric bridge connect the power input of the acceleration sensor circuit.
2. the nonpolarity constant current source power supply circuit of acceleration transducer according to claim 1, which is characterized in that the electricity
Bridge includes the first rectifier diode being serially connected, the second rectifier diode, third rectifier diode and the 4th two poles of rectification
Pipe.
3. the nonpolarity constant current source power supply circuit of acceleration transducer according to claim 2, which is characterized in that the nothing
One output end of polarity constant-current source connects the anode of first rectifier diode and the cathode of the 4th rectifier diode,
The another output of the nonpolarity constant-current source connects the anode and third rectifier diode of second rectifier diode
The cathode and the acceleration sensor circuit of cathode, the cathode of first rectifier diode and second rectifier diode
The connection of a power input, the anode of the anode of the 4th rectifier diode and the third rectifier diode with it is described
Another power input of acceleration sensor circuit connects.
4. the nonpolarity constant current source power supply circuit of acceleration transducer according to claim 1, which is characterized in that described to add
Speed sensor circuit is IEPE acceleration sensor circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580636.6U CN209514448U (en) | 2019-04-25 | 2019-04-25 | A kind of nonpolarity constant current source power supply circuit of acceleration transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580636.6U CN209514448U (en) | 2019-04-25 | 2019-04-25 | A kind of nonpolarity constant current source power supply circuit of acceleration transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209514448U true CN209514448U (en) | 2019-10-18 |
Family
ID=68189215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920580636.6U Active CN209514448U (en) | 2019-04-25 | 2019-04-25 | A kind of nonpolarity constant current source power supply circuit of acceleration transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209514448U (en) |
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2019
- 2019-04-25 CN CN201920580636.6U patent/CN209514448U/en active Active
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