CN202304889U - Circuit for acquiring current signals, voltage and temperature signals - Google Patents
Circuit for acquiring current signals, voltage and temperature signals Download PDFInfo
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- CN202304889U CN202304889U CN2011203780878U CN201120378087U CN202304889U CN 202304889 U CN202304889 U CN 202304889U CN 2011203780878 U CN2011203780878 U CN 2011203780878U CN 201120378087 U CN201120378087 U CN 201120378087U CN 202304889 U CN202304889 U CN 202304889U
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Abstract
The utility model provides a circuit for acquiring current signals, voltage and temperature signals. The circuit comprises a programmable logic control chip, an acquisition control switch module as well as a current acquisition module and a voltage acquisition module which are electrically connected with the acquisition control switch module, wherein the output of each of the acquisition module is respectively connected with a corresponding pin of the programmable logic control chip. The circuit also comprises a temperature acquisition module, wherein one end of the temperature acquisition module is connected with the acquisition control switch module, and the other end of the temperature acquisition module is connected with a corresponding pin of the programmable logic control chip. The circuit has the beneficial effects that: the circuit can acquire current signals, voltage signals and temperature signals, can synchronously acquire current signals and voltage signals by the programmable logic control chip and has the advantages of intelligence in control, short response time and real-time monitoring.
Description
Technical field
The utility model relates to a kind of sample circuit, especially relates to a kind of circuit of gathering electric current, voltage and temperature signal.
Background technology
Along with the fast development of national economy, the increasing substantially of energy demand, country also presents the trend of growth to the input of power construction.The voltage measurement that in existing technology, is used for electric power transmission line utilizes voltage current transformer mostly.Exist not have intelligence control system, the response time is than length and control technical matterss such as dumb.Simultaneously, in electric system, this factor of cable temperature also receives bigger concern gradually.At present, most of sample circuits are sampling monitoring electric current and voltage only, and do not have the sampling monitoring electric current.
Summary of the invention
The problem that the utility model will solve provides a kind ofly can gather electric current, voltage, sample circuit that again can collecting temperature, and it is short to have Based Intelligent Control, response time, the advantage that can monitor in real time.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of circuit of gathering electric current, voltage and temperature signal comprises FPGA control chip, acquisition controlling switch module, the current acquisition module and the voltage acquisition module that are electrically connected with it; The output of acquisition module connects the corresponding pin of FPGA control chip respectively; Also comprise temperature collect module, temperature collect module one end connects the acquisition controlling switch module, and the other end is connected with the corresponding pin of FPGA control chip.
Further, said acquisition controlling switch module comprises resistance R 3 and triode Q6; R3 one end connects the FPGA control chip, and the other end connects the base stage of triode Q6; The collector of triode Q6 meets power supply VCC, and emitter connects acquisition module.
Further, temperature collect module comprises acquisition controlling switch module, temperature sensor, resistance R 10 and resistance R 11; Resistance R 10 1 termination acquisition controlling switch modules, the other end is told 3 branch roads, connects R11 ground connection with resistance R 11, sensor and FPGA control chip respectively.
Further, the current acquisition module comprises induction by current coil L2 and triode Q2; Induction by current coil L2, resistance R 1, resistance R 7, resistance R 6 and voltage stabilizing diode D1 are parallel between the base stage and ground of triode Q2; Be connected with resistance R 5 on the base stage of triode Q2, collector connects the acquisition controlling switch module, and transmitter is told 2 branch roads, and one is passed through resistance R 8 ground connection, and another branch road is connected with the FPGA control chip.
Further, voltage acquisition module comprises voltage sensor and triode Q3, and voltage sensor is connected to the base stage of triode Q3 through resistance R 9, and resistance R 2 and voltage stabilizing diode D2 are parallel between the base stage and ground of triode Q3; The collector of triode Q3 is connected with the acquisition controlling switch module, and emitter is told 2 branch roads, and one is passed through resistance R 4 ground connection, and another is connected with the FPGA control chip.
Advantage and the good effect that the utlity model has are: owing to adopt technique scheme; This examination is novel can gather electric current, voltage and temperature signal; Owing to there is the FPGA control chip can realize the Based Intelligent Control of circuit; Can also realize the synchronous acquisition of electric current and voltage simultaneously through the FPGA control chip, have Based Intelligent Control, response time weak point, the advantage that can monitor in real time.
Description of drawings
Fig. 1 is the sampling module circuit theory diagrams of the utility model;
Fig. 2 is the circuit theory diagrams of the FPGA control chip of the utility model;
Fig. 3 is the block diagram of the utility model.
Among the figure:
1, current acquisition module 2, voltage acquisition module 3, temperature collect module
4, acquisition controlling switch module
Embodiment
Like Fig. 1, shown in 2, the utility model provides a kind of circuit of gathering electric current, voltage and temperature signal, comprises the current acquisition module 1 and the voltage acquisition module 2 of FPGA control chip, acquisition controlling switch module 4, electrical connection with it; The output of acquisition module connects the corresponding pin of FPGA control chip respectively; Also comprise temperature collect module 3, temperature collect module 3 one ends connect acquisition controlling switch module 4, and the other end is connected with the corresponding pin of FPGA control chip.
Said acquisition controlling switch module 4 comprises resistance R 3 and triode Q6; R3 one end connects the FPGA control chip, and the other end connects the base stage of triode Q6; The collector of triode Q6 meets power supply VCC, and emitter connects acquisition module.
Temperature collect module 3 comprises acquisition controlling switch module 4, temperature sensor, resistance R 10 and resistance R 11; Resistance R 10 1 termination acquisition controlling switch modules 4, the other end is told 3 branch roads, connects R11 ground connection with resistance R 11, sensor and FPGA control chip respectively.
The course of work of this instance: like Fig. 1, shown in 2 and 3, the output terminals A DC_V of the output terminals A DC_I of current acquisition module 1, voltage acquisition module 2 is connected with the 18th pin, the 17th pin and the 19th pin of FPGA control chip respectively with the output terminals A DC_WATER of temperature collect module 3.The model of FPGA control chip is STM32F101C8T6.The 13rd pin of FPGA control chip is the control pin, is connected with acquisition controlling switch module 4.Acquisition controlling switch module 4 receives the instruction that the FPGA control chip sends, and makes corresponding unlatching or shutoff operation.When acquisition controlling switch module 4 is opened, triode Q1 conducting, induction by current coil L2 detects electric current, through a series of resistance, outputs to the FPGA control chip through triode Q2 amplification again.HV+ is the socket of voltage sensor, and voltage sensor detects voltage, amplifies through triode Q3 to output to the FPGA control chip; Voltage stabilizing diode D1 and D2 all shield to circuit.The FPGA control chip can be gathered the SF of the frequency control voltage acquisition module 2 of electric current according to current acquisition module 1, makes the two can reach synchronous acquisition.W+ is the temperature sensor socket, and the temperature sensor detected temperatures is also exported to the FPGA control chip with signal.
More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.
Claims (5)
1. circuit of gathering electric current, voltage and temperature signal comprises FPGA control chip, acquisition controlling switch module (4), the current acquisition module (1) and the voltage acquisition module (2) that are electrically connected with it; The output of acquisition module connects the corresponding pin of FPGA control chip respectively; It is characterized in that: also comprise temperature collect module (3), temperature collect module (3) one ends connect acquisition controlling switch module (4), and the other end is connected with the corresponding pin of FPGA control chip.
2. according to the said a kind of circuit of gathering electric current, voltage and temperature signal of claim 1, it is characterized in that: said acquisition controlling switch module (4) comprises resistance R 3 and triode Q6; R3 one end connects the FPGA control chip, and the other end connects the base stage of triode Q6; The collector of triode Q6 meets power supply VCC, and emitter connects acquisition module.
3. according to the said a kind of circuit of gathering electric current, voltage and temperature signal of claim 1, it is characterized in that: temperature collect module (3) comprises acquisition controlling switch module (4), temperature sensor, resistance R 10 and resistance R 11; Resistance R 10 1 termination acquisition controlling switch modules (4), the other end is told 3 branch roads, connects R11 ground connection with resistance R 11, sensor and FPGA control chip respectively.
4. according to the said a kind of circuit of gathering electric current, voltage and temperature signal of claim 1, it is characterized in that: current acquisition module (1) comprises induction by current coil L2 and triode Q2; Induction by current coil L2, resistance R 1, resistance R 7, resistance R 6 and voltage stabilizing diode D1 are parallel between the base stage and ground of triode Q2; Be connected with resistance R 5 on the base stage of triode Q2, collector connects acquisition controlling switch module (4), and transmitter is told 2 branch roads, and one is passed through resistance R 8 ground connection, and another branch road is connected with the FPGA control chip.
5. according to the said a kind of circuit of gathering electric current, voltage and temperature signal of claim 1; It is characterized in that: voltage acquisition module (2) comprises voltage sensor and triode Q3; Voltage sensor is connected to the base stage of triode Q3 through resistance R 9, and resistance R 2 and voltage stabilizing diode D2 are parallel between the base stage and ground of triode Q3; The collector of triode Q3 is connected with acquisition controlling switch module (4), and emitter is told 2 branch roads, and one is passed through resistance R 4 ground connection, and another is connected with the FPGA control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203780878U CN202304889U (en) | 2011-09-29 | 2011-09-29 | Circuit for acquiring current signals, voltage and temperature signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203780878U CN202304889U (en) | 2011-09-29 | 2011-09-29 | Circuit for acquiring current signals, voltage and temperature signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304889U true CN202304889U (en) | 2012-07-04 |
Family
ID=46373766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203780878U Expired - Fee Related CN202304889U (en) | 2011-09-29 | 2011-09-29 | Circuit for acquiring current signals, voltage and temperature signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304889U (en) |
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2011
- 2011-09-29 CN CN2011203780878U patent/CN202304889U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20130929 |