CN205450081U - High accuracy current -voltage gathers and data conversion circuit - Google Patents
High accuracy current -voltage gathers and data conversion circuit Download PDFInfo
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- CN205450081U CN205450081U CN201521144570.4U CN201521144570U CN205450081U CN 205450081 U CN205450081 U CN 205450081U CN 201521144570 U CN201521144570 U CN 201521144570U CN 205450081 U CN205450081 U CN 205450081U
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Abstract
The utility creatively provides a high accuracy current -voltage gathers and data conversion circuit, including core processor and connected electric current collection part, voltage acquisition part, power unit and communication part, electric current collection part is including being used for connecting hall sensor's sensor interface and the voltage follower who comprises voltage comparater, voltage follower's positive going input end is connected two catching diode and is all become clamp circuit through an ohmic connection sensor interface, voltage follower's output. The utility model discloses the creation has following advantage: the data acquisition that subtotal voltage acquisition part had realized the high accuracy is gathered to the electric current, and the structure adds singly, the easy realization, and output signal is stable, power unit adopts the wide withstand voltage power supply chip of MAX743, can work under the wide voltage of 12 -48V, communication part realizes the voltage electric current and exports with 485 communication interface, and current -voltage is with PWM's form output, and the voltage electric current is with the form output of 0 -5V voltage.
Description
Technical field
The invention belongs to Signal sampling and processing circuit engineering field, especially relates to a kind of high-precision current voltage acquisition and data converting circuit.
Background technology
In existing intelligence control system, generally by the corresponding data of various sensor senses, carried out collection and the process of sensor signal by voltage x current Acquisition Circuit, passing to the microprocessors such as single-chip microcomputer afterwards and process, finally export control signal.
There are the following problems for existing intelligence control system: voltage x current Acquisition Circuit accuracy of data acquisition is the highest, and the communication part output signal being connected with single-chip microcomputer is easily disturbed instability, for shortcomings such as single-chip microcomputer provide the pressure scope of voltage source of electric energy little.
Summary of the invention
In view of this, the invention is directed to a kind of high-precision current voltage acquisition and data converting circuit, to improve the precision of voltage and current signal collection and process.
For reaching above-mentioned purpose, the technical scheme of the invention is achieved in that
A kind of high-precision current voltage acquisition and data converting circuit, including core processor and connected current acquisition part, voltage acquisition part, power pack and communication part, described current acquisition part includes the sensor interface for connecting Hall element and the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects sensor interface by a resistance, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit；
Described voltage acquisition part includes the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects bleeder circuit by a resistance, the positive input of voltage follower is simultaneously by a resistance eutral grounding, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit.
Further, described power pack is the power circuit being made up of LM2596 regulator and connected MAX743 switching regulator.
Further, described communication part includes two 485 transceivers, and wherein one end of the one 485 transceiver connects the input data pin of core processor, and the other end connects the interface being used for connecting card reader by protection circuit；One end of 2nd 485 transceiver connects the output data pin of core processor, and the other end connects output signal interface by protection circuit.
Relative to prior art, the invention has the advantage that
(1) current acquisition part and voltage acquisition part achieve high-precision data acquisition；And structure adds list, easily realize, stable output signal；
(2) power pack uses the pressure power supply chip of MAX743 width, can be operated under 12-48V Width funtion；
(3) communication part realizes voltage x current and exports with 485 communication interfaces, and current/voltage exports with the form of PWM, and voltage x current exports with the form of 0-5V voltage.
Accompanying drawing explanation
The accompanying drawing of the part constituting the invention is used for providing being further appreciated by the invention, and the schematic description and description of the invention is used for explaining the invention, is not intended that the improper restriction to the invention.In the accompanying drawings:
Fig. 1 is the circuit diagram of current acquisition part described in the invention embodiment；
Fig. 2 is the circuit diagram of voltage acquisition part described in the invention embodiment；
Fig. 3 is the circuit diagram of power pack described in the invention embodiment；
Fig. 4 is the circuit diagram of communication part described in the invention embodiment.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the invention and the feature in embodiment can be mutually combined.
Describe the invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of high-precision current voltage acquisition and data converting circuit, including core processor and connected current acquisition part, voltage acquisition part, power pack and communication part, described core processor is for the current and voltage signals processing current acquisition part, voltage acquisition part gathers, and exports.As shown in Figure 1, described current acquisition part includes the sensor interface for connecting Hall element and the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects sensor interface by a resistance, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit；As shown in Figure 2, described voltage acquisition part includes the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects bleeder circuit by a resistance, the positive input of voltage follower is simultaneously by a resistance eutral grounding, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit.
As it is shown on figure 3, described power pack is the power circuit being made up of LM2596 regulator and connected MAX743 switching regulator, MAX743 is wide pressure power supply chip, can be operated under 12-48V Width funtion.
As shown in Figure 4, described communication part includes two 485 transceivers, and wherein one end of the one 485 transceiver connects the input data pin of core processor, and the other end connects the interface being used for connecting card reader by protection circuit；One end of 2nd 485 transceiver connects the output data pin of core processor, and the other end connects output signal interface by protection circuit.Realizing voltage x current to export with 485 communication interfaces, current/voltage exports with the form of PWM, and voltage x current exports with the form of 0-5V voltage.
The foregoing is only the preferred embodiment of the invention; not in order to limit the invention; within all spirit in the invention and principle, any modification, equivalent substitution and improvement etc. made, within should be included in the protection domain of the invention.
Claims (3)
1. a high-precision current voltage acquisition and data converting circuit, it is characterized in that: include core processor and connected current acquisition part, voltage acquisition part, power pack and communication part, described current acquisition part includes the sensor interface for connecting Hall element and the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects sensor interface by a resistance, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit；
Described voltage acquisition part includes the voltage follower being made up of voltage comparator, the positive input of described voltage follower connects bleeder circuit by a resistance, the positive input of voltage follower is simultaneously by a resistance eutral grounding, and the outfan of voltage follower connects two clamp diodes and all becomes clamp circuit.
High-precision current voltage acquisition the most according to claim 1 and data converting circuit, it is characterised in that: described power pack is the power circuit being made up of LM2596 regulator and connected MAX743 switching regulator.
High-precision current voltage acquisition the most according to claim 1 and data converting circuit; it is characterized in that: described communication part includes two 485 transceivers; wherein one end of the one 485 transceiver connects the input data pin of core processor, and the other end connects the interface being used for connecting card reader by protection circuit；One end of 2nd 485 transceiver connects the output data pin of core processor, and the other end connects output signal interface by protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144570.4U CN205450081U (en) | 2015-12-31 | 2015-12-31 | High accuracy current -voltage gathers and data conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144570.4U CN205450081U (en) | 2015-12-31 | 2015-12-31 | High accuracy current -voltage gathers and data conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205450081U true CN205450081U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521144570.4U Expired - Fee Related CN205450081U (en) | 2015-12-31 | 2015-12-31 | High accuracy current -voltage gathers and data conversion circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205450081U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527481A (en) * | 2015-12-31 | 2016-04-27 | 天津朗誉科技发展有限公司 | Current-voltage acquisition and data processing circuit |
| CN106841745A (en) * | 2016-12-27 | 2017-06-13 | 四川超影科技有限公司 | A kind of robot electric power system voltage x current observation circuit |
| CN110707952A (en) * | 2019-11-05 | 2020-01-17 | 武汉武水电气技术有限责任公司 | Photovoltaic grid-connected inverter |
-
2015
- 2015-12-31 CN CN201521144570.4U patent/CN205450081U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527481A (en) * | 2015-12-31 | 2016-04-27 | 天津朗誉科技发展有限公司 | Current-voltage acquisition and data processing circuit |
| CN106841745A (en) * | 2016-12-27 | 2017-06-13 | 四川超影科技有限公司 | A kind of robot electric power system voltage x current observation circuit |
| CN110707952A (en) * | 2019-11-05 | 2020-01-17 | 武汉武水电气技术有限责任公司 | Photovoltaic grid-connected inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20161231 |