CN109884379A - It is a kind of for acquiring the circuit of uA and mA function - Google Patents
It is a kind of for acquiring the circuit of uA and mA function Download PDFInfo
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- CN109884379A CN109884379A CN201910183265.2A CN201910183265A CN109884379A CN 109884379 A CN109884379 A CN 109884379A CN 201910183265 A CN201910183265 A CN 201910183265A CN 109884379 A CN109884379 A CN 109884379A
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- acquisition circuit
- circuit
- optocoupler
- relay
- acquisition
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Abstract
The invention discloses a kind of for acquiring the circuit of uA and mA function, the circuit that this kind is used to acquire uA and mA function includes the first fuse, first optocoupler, field-effect tube, second optocoupler, second fuse, current sense resistor, mA Acquisition Circuit and uA Acquisition Circuit, first fuse and the first optocoupler are connected, field-effect tube and the second optocoupler, second fuse and current sense resistor are connected, current sense resistor is connected respectively to mA Acquisition Circuit and uA Acquisition Circuit, mA Acquisition Circuit is by the first amplification chip and the second amplification chip, third optocoupler, relay and the first LED light are composed in series, power supply is connected at relay.By the above-mentioned means, the configuration of the present invention is simple, convenient to carry out, it can efficiently solve and realize the drawbacks of can only once acquiring a kind of data in a limited space, Costco Wholesale traditional collection plate that also compares is more lower.
Description
Technical field
The present invention relates to automobile circuit technical fields, more particularly to a kind of for acquiring the circuit of uA and mA function.
Background technique
With making rapid progress for science and technology, the rapid development of electronic technology optimizes electronic product constantly, this also leads to electricity
Sub- product is more applied in people's lives, electronic technology it is integrated so that electronic technology product structure and performance by
Gradually being promoted, the industry being related to is also more, and apply the product in various equipment also more and more, with the step of era development,
Equipment that is some outmoded and falling behind gradually is eliminated, then just have more chances for New Products & New Technology, it is naturally required that
The problems such as becoming more harsher, all facing accuracy, anti-interference as general equipment acquisition electric current, then precisely
Property, anti-interference, practicability, cost performance are just particularly important, and the method for acquisition and the test for most of electric currents
It is relatively simple, if it is desired to which that space, time etc. will be sacrificed by getting a desired effect, for market demands, so designing
A circuit that not only can acquire uA electric current but also mA electric current can be acquired.
Summary of the invention
For acquiring the circuit of uA and mA function, structure is simple the invention mainly solves the technical problem of providing a kind of,
It is convenient to carry out, it can efficiently solve and realize the drawbacks of can only once acquiring a kind of data in a limited space, Costco Wholesale also phase
It is more lower to compare traditional collection plate, is truly realized small cost and brings up big value.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of for acquiring uA and mA
The circuit of function, the circuit that this kind is used to acquire uA and mA function includes the first fuse, the first optocoupler, field-effect tube, second
Optocoupler, the second fuse, current sense resistor, mA Acquisition Circuit and uA Acquisition Circuit, the first fuse and the first optocoupler are connected,
Field-effect tube is connected with the second optocoupler, the second fuse and current sense resistor, and current sense resistor is connected respectively to mA acquisition
Circuit and uA Acquisition Circuit, mA Acquisition Circuit is by the first amplification chip and the second amplification chip, third optocoupler, relay and first
LED light is composed in series, and power supply is connected at relay.
Preferably, the uA Acquisition Circuit is by third amplification chip and the 4th amplification chip, the 4th optocoupler and the 2nd LED
Lamp is composed in series, and third amplification chip is connected with the power supply at mA Acquisition Circuit, i.e. U5.3 at mA Acquisition Circuit and U5.4 with
U5.3 and U5.4 at uA Acquisition Circuit are identical two points, are connected with resistance between the U5.3 and U5.4 at uA Acquisition Circuit
R11 and R12, thus mA Acquisition Circuit acquisition be mA electric current, and uA Acquisition Circuit by Acquisition Circuit will pass through resistance, institute
Electric current with acquisition is uA electric current.
Preferably, the relay is normally opened type relay using can be used for double DI direction controllings, relay,
Relay is by control chip controls.
Compared with prior art, convenient to carry out the beneficial effects of the present invention are: structure is simple, can efficiently solve is having
The drawbacks of can only once acquiring a kind of data, is realized in the space of limit, and Costco Wholesale traditional collection plate that also compares is more lower,
It is truly realized small cost and brings up big value.
Detailed description of the invention
Fig. 1 is a kind of for acquiring the structural schematic diagram of the circuit of uA and mA function.
Specific embodiment
Present pre-ferred embodiments are described in detail with reference to the accompanying drawing, so as to can be easier to the advantages of invention with feature
In being readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention includes:
It is a kind of for acquiring the circuit of uA and mA function, the circuit that this kind is used to acquire uA and mA function includes the first insurance
The 1, first optocoupler 2 of silk, field-effect tube 3, the second optocoupler 4, the second fuse 5, current sense resistor 6, mA Acquisition Circuit 7 and uA are adopted
Collector 8, the first fuse 1 are connected with the first optocoupler 2, field-effect tube 3 and the second optocoupler 4, the second fuse 5 and current detecting
Resistance 6 is connected, and current sense resistor 6 is connected respectively to mA Acquisition Circuit 7 and uA Acquisition Circuit 8, and mA Acquisition Circuit 7 is put by first
Large chip 71 and the second amplification chip 72, third optocoupler 73, relay 74 and the first LED light 75 are composed in series, at relay 74
It is connected with power supply.
The uA Acquisition Circuit 8 is by third amplification chip 81 and the 4th amplification chip 82, the 4th optocoupler 83 and the second LED light
84 are composed in series, and third amplification chip 81 is connected with the power supply at mA Acquisition Circuit 7, i.e. U5.3 at mA Acquisition Circuit 7 and
U5.3 and U5.4 at U5.4 and uA Acquisition Circuit 8 are identical two points, are connected between the U5.3 and U5.4 at uA Acquisition Circuit 8
Be connected to resistance R11 and R12, thus mA Acquisition Circuit 7 acquire be mA electric current, and uA Acquisition Circuit 8 is wanted by Acquisition Circuit
By resistance, so the electric current of acquisition is uA electric current.
The relay 75 is normally opened type relay, relay using can be used for double DI direction controllings, relay 75
Device 75 is by control chip controls.
When a kind of circuit for acquiring uA and mA function of the present invention works, relay 75 is normally opened type relay, and
At this moment the U5.3 and U5.4 of mA Acquisition Circuit 7 are to turn on, and uA Acquisition Circuit 8 does not work, and the electric current at this moment acquired is mA grades,
At this moment electric current is the transmission for flowing through third optocoupler 73 and carrying out signal, using the second amplification chip 72 and the first amplification chip 71 into
The amplification of row small-signal later samples the electric current for flowing through the device by current sense resistor 6, then when wanting to survey
When measuring uA electric current, according to the voltage output between control chip and 75 pin of relay, so that switching circuit, acquires mA
Circuit 7 disconnects, uA Acquisition Circuit 8 is connected, at this moment can the method for duplicate measurements mA electric current carry out the test of uA electric current, mA
Acquisition Circuit 7 and uA Acquisition Circuit 8 are all that the signal of acquisition carries out signal transmission by optocoupler, and carries out letter by amplification chip
Number processing exports the signal handled well to optocoupler and then signal is transferred to outside using the sampling of current sense resistor
Device.
The present invention is a kind of, and for acquiring the circuit of uA and mA function, structure is simple, and convenient to carry out, can efficiently solve is having
The drawbacks of can only once acquiring a kind of data, is realized in the space of limit, and Costco Wholesale traditional collection plate that also compares is more lower,
It is truly realized small cost and brings up big value.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (3)
1. a kind of for acquiring the circuit of uA and mA function, it is characterised in that: this kind is used to acquire the circuit packet of uA and mA function
Include the first fuse, the first optocoupler, field-effect tube, the second optocoupler, the second fuse, current sense resistor, mA Acquisition Circuit and
UA Acquisition Circuit, the first fuse and the first optocoupler are connected, field-effect tube and the second optocoupler, the second fuse and current detecting electricity
Resistance is connected, and current sense resistor is connected respectively to mA Acquisition Circuit and uA Acquisition Circuit, and mA Acquisition Circuit is by the first amplification chip
It is composed in series with the second amplification chip, third optocoupler, relay and the first LED light, power supply is connected at relay.
2. according to claim 1 a kind of for acquiring the circuit of uA and mA function, it is characterised in that: the uA acquisition electricity
Routing third amplification chip and the 4th amplification chip, the 4th optocoupler and the second LED light are composed in series, and third amplification chip is adopted with mA
Power supply at collector is connected, i.e. U5.3 at mA Acquisition Circuit and the U5.3 at U5.4 and uA Acquisition Circuit and U5.4 are identical
Two points, resistance R11 and R12 are connected between the U5.3 and U5.4 at uA Acquisition Circuit, so the acquisition of mA Acquisition Circuit
It is the electric current of mA, and uA Acquisition Circuit will pass through resistance by Acquisition Circuit, so the electric current of acquisition is uA electric current.
3. according to claim 1 a kind of for acquiring the circuit of uA and mA function, it is characterised in that: the relay is adopted
It is that can be used for double DI direction controllings, relay is normally opened type relay, and relay is by control chip controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183265.2A CN109884379A (en) | 2019-03-13 | 2019-03-13 | It is a kind of for acquiring the circuit of uA and mA function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183265.2A CN109884379A (en) | 2019-03-13 | 2019-03-13 | It is a kind of for acquiring the circuit of uA and mA function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109884379A true CN109884379A (en) | 2019-06-14 |
Family
ID=66931733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910183265.2A Pending CN109884379A (en) | 2019-03-13 | 2019-03-13 | It is a kind of for acquiring the circuit of uA and mA function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109884379A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444434A (en) * | 1992-06-15 | 1995-08-22 | Serby; Victor M. | Extended life smoke detector |
| CN103185831A (en) * | 2011-12-30 | 2013-07-03 | 华东电力试验研究院有限公司 | Current detection method and device |
| CN104849542A (en) * | 2015-06-12 | 2015-08-19 | 武汉精测电子技术股份有限公司 | Current detection system and gear shift method therefor |
| CN105572462A (en) * | 2014-10-09 | 2016-05-11 | 中国科学院物理研究所 | Current detector |
| CN107831358A (en) * | 2017-10-20 | 2018-03-23 | 博众精工科技股份有限公司 | A kind of current measurement device based on MAX4373HEUA |
| CN208537622U (en) * | 2018-07-31 | 2019-02-22 | 珠海市运泰利自动化设备有限公司 | A kind of wide-range high-accuracy current measuring device for test equipment |
-
2019
- 2019-03-13 CN CN201910183265.2A patent/CN109884379A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5444434A (en) * | 1992-06-15 | 1995-08-22 | Serby; Victor M. | Extended life smoke detector |
| CN103185831A (en) * | 2011-12-30 | 2013-07-03 | 华东电力试验研究院有限公司 | Current detection method and device |
| CN105572462A (en) * | 2014-10-09 | 2016-05-11 | 中国科学院物理研究所 | Current detector |
| CN104849542A (en) * | 2015-06-12 | 2015-08-19 | 武汉精测电子技术股份有限公司 | Current detection system and gear shift method therefor |
| CN107831358A (en) * | 2017-10-20 | 2018-03-23 | 博众精工科技股份有限公司 | A kind of current measurement device based on MAX4373HEUA |
| CN208537622U (en) * | 2018-07-31 | 2019-02-22 | 珠海市运泰利自动化设备有限公司 | A kind of wide-range high-accuracy current measuring device for test equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190614 |
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| RJ01 | Rejection of invention patent application after publication |