CN206671419U - A kind of current measurement system - Google Patents
A kind of current measurement system Download PDFInfo
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- CN206671419U CN206671419U CN201621430003.XU CN201621430003U CN206671419U CN 206671419 U CN206671419 U CN 206671419U CN 201621430003 U CN201621430003 U CN 201621430003U CN 206671419 U CN206671419 U CN 206671419U
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- control unit
- partial pressure
- collection circuit
- measurement system
- current
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Abstract
The utility model discloses a kind of current measurement system, it is characterised in that including：MCU control unit, ADC modular converters and acquisition module, the acquisition module is made up of current collection circuit all the way above, the ADC modular converters include several ADC converters, each ADC converters are provided with some collection inputs being connected one by one with the partial pressure output end of current collection circuit, and the MCU control unit has the control signal output that the control signal input with each current collection circuit is connected one by one；The measurement input of the current collection circuit is connected to probe connector I1；The ADC converters communicate to connect with the MCU control unit.By the current collection circuit in mainboard integrated multipath, the measurement that simultaneously multiple FPDPs can be carried out with electric current is realized.
Description
Technical field
Field of current measurement is the utility model is related to, more particularly to a kind of current measurement system.
Background technology
With the development in epoch, modern industry process is just moving towards complication, high speed, technicalization, maximization development, near several
The fast development of a series of new and high technology such as Nian Zhong, computer technology, information technology, network technology, data acquisition, particularly
High-precision data acquisition instrument act as important role in industrial processes, and industrial enterprise requires data acquisition instrument intelligence
Degree more and more higher can be changed.At the same time, in many occasions, the data volume for generally requiring collection is very big, it is necessary to simultaneously to more
The information data of individual product is acquired and monitored together, this require data acquisition instrument possess multiple data collection terminal mouths with
This meets the needs of industrial enterprise, but conventionally, as is surveyed by single-chip microcomputer performance and used technology restriction
Ping, i.e., can not be simultaneously more than the data acquisition channel of two synchronizations.
Utility model content
The purpose of this utility model is to overcome weak point of the prior art, there is provided a kind of current measurement system.
The purpose of this utility model is achieved through the following technical solutions：
A kind of current measurement system, including：MCU control unit, ADC modular converters and acquisition module, the acquisition module
It is made up of the current collection circuit more than all the way, the ADC modular converters include several ADC converters, each ADC
Converter is provided with some collection inputs being connected one by one with the partial pressure output end of current collection circuit, the MCU control unit
There is the control signal output that the control signal input with each current collection circuit is connected one by one；
The measurement input of the current collection circuit is connected to probe connector I1；
The ADC converters communicate to connect with the MCU control unit.
In one of the embodiments, the current collection circuit includes：Protection location, switch control unit and partial pressure list
Member, wherein, the control signal input of the input of the protection location as the current collection circuit, the partial pressure unit
Partial pressure output end of the output end as the current collection circuit, the protection location, the switch control unit and described
Partial pressure unit is linked in sequence successively.
In one of the embodiments, the protection location includes：First resistor R1 and second resistance R2, wherein, it is described
First resistor R1 one end is as the protection location input, the first resistor R1 and the second resistance R2 connection section
Point is connected as the output end of the protection location with the input of the switch control unit.
The first resistor R1 and second resistance R2, which is connected in series, to be followed by reference ground GND.
In one of the embodiments, the switch control unit includes：First triode Q1 and the first MOS pipe K1, its
In, the input of the base stage of the first triode Q1 as the switch control unit, the source electrode of the first metal-oxide-semiconductor K1 is made
For the output end of the switch control unit, measurement input of the drain as the current measurement；
The emitter stage of the first triode Q1 is connected with one end of the second resistance R2, colelctor electrode and described first
Metal-oxide-semiconductor K1 grid connection；
The source electrode of the first metal-oxide-semiconductor K1 is connected with the output end of the partial pressure unit, and drain electrode is connected to power Vcc.
In one of the embodiments, the partial pressure unit includes：3rd resistor R3, wherein, 3rd resistor R3 one end
As the output end of the partial pressure unit, other end connection reference ground GND.
In one of the embodiments, the drain electrode of the first metal-oxide-semiconductor K1 is also connected a display unit with power Vcc.
In one of the embodiments, the display unit includes：First diode D1 and the 4th resistance R4, described first
Diode D1 is connected in series with the 4th resistance R4.
In one of the embodiments, in addition to：Filter unit, the filter unit are in parallel with the partial pressure unit even
Connect.
In one of the embodiments, the filter unit includes：First electric capacity C1, the first electric capacity C1 are parallel to
The 3rd resistor R3.
The technical scheme of this application has following beneficial effect compared to prior art：
1. by the way that multiple current collection circuits are integrated on one piece of mainboard, realization can be carried out to multiple FPDPs simultaneously
The measurement of electric current, it is easy to operate.
2. realizing the overcurrent protection to current collection circuit by the control signal output of MCU control unit, work as collection
When the electric current or voltage arrived exceeds preset value, MCU control unit will output control signal controlling switch pipe conducting or
The function of overcurrent protection is opened in cut-off.
Brief description of the drawings
Fig. 1 is the current measurement system frame diagram in the present embodiment；
Fig. 2 is current measurement system schematic diagram in the present embodiment.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Better embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is to make to this practicality newly
The more thorough and comprehensive that the disclosure of type understands.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " bag
Include the arbitrary and all combination of the Listed Items of one or more correlations.
It is as shown in Figure 1 current measurement system frame diagram, please combines reference picture 2 in the lump, including：MCU control unit 100,
ADC modular converters 200 and acquisition module 300, the acquisition module 300 is made up of current collection circuit all the way above, described
ADC modular converters 300 include several ADC converters, and each ADC converters are provided with some points with current collection circuit
The collection input that pressure output end connects one by one, the MCU control unit 100 have the control with each current collection circuit
The control signal output that signal input part connects one by one；
The measurement input of the current collection circuit is connected to probe connector I1；
The ADC converters communicate to connect with the MCU control unit 100.
It should be noted that ADC converters communicate to connect with MCU control unit 100, as shown in Fig. 2 ADC converters lead to
CS1 pins, SLCK1 pins, DOUT1 pins is crossed to connect with DIN1 pins, wherein, MCU control unit 100 is selected by CS1 pins
Middle ADC converters, MCU control unit 100 are supplied to ADC converters to provide clock signal, ADC converters by SCLK1 pins
Measurement data is passed through by DIN1 pins to MCU control unit 100, ADC converters with digital data transmission by DOUT1 pins
It is in communication with each other with MCU control unit 100.
It should also be noted that, current collection circuit all the way and an ADC converter are only shown in Fig. 2, but actually
There are multichannel current collection circuit and multiple ADC converters, the quantity needed can be designed according to being actually needed for measurement data.
Specifically, current collection circuit includes：Protection location 400, switch control unit 500 and partial pressure unit 600, its
In, the control signal input of the input of protection location 400 as current collection circuit, the output end of partial pressure unit 600 is made
For the partial pressure output end of current collection circuit, protection location 400, switch control unit 500 and partial pressure unit 600 sequentially connect successively
Connect.
Further, protection location 500 includes：First resistor R1 and second resistance R2, wherein, first resistor R1 one end
As the input of protection location 500, the output end of first resistor R1 and second resistance R2 connecting node as protection location 500
It is connected with the input of switch control unit 600.
First resistor R1 and second resistance R2, which is connected in series, to be followed by reference ground GND.
It should be noted that first resistor R1 is overcurrent protection resistance, second resistance R2 is to ensure the first triode
Q1 reliable turn-off, improve the stability and security of circuit.
Specifically, switch control unit 600 includes：First triode Q1 and the first metal-oxide-semiconductor K1, wherein, the first triode
Input of the Q1 base stage as switch control unit 600, the first metal-oxide-semiconductor K1 source electrode is as the defeated of switch control unit 600
Go out end, emitter stage is connected with second resistance R2 one end, and colelctor electrode is connected with the first metal-oxide-semiconductor K1 grid；
First metal-oxide-semiconductor K1 source electrode and the output end of partial pressure unit connect, and drain electrode is connected to power Vcc.
Further, the first metal-oxide-semiconductor K1 drain is also attached to external probes connector I1.
Specifically, partial pressure unit 600 includes：3rd resistor R3, wherein, 3rd resistor R3 one end is as partial pressure unit
600 output end, other end connection reference ground GND.
It should be noted that when MCU control unit 100 is low to the first triode Q1 base stage from control signal output
During level, the first triode Q1 cut-offs, the first metal-oxide-semiconductor K1 conductings, current loop is formed, the first metal-oxide-semiconductor K1 drain is by outside
Probe connector I1 input current signals, ADC converters collection 3rd resistor R1 voltage, according to Ohm's law, are calculated
Loop current, when electric current exceeds preset value, MCU control unit 100 will export high level from control signal output, promote
The first triode Q1 is turned on, the first metal-oxide-semiconductor K1 cut-offs, turn-off circuit electric current, completes overcurrent protection.
Specifically, the first metal-oxide-semiconductor K1 drain series display unit 700 is followed by power Vcc.
Further, the first metal-oxide-semiconductor K1 drain electrode is also connected a display unit 700 with power Vcc.
It should be noted that the 4th resistance R4 is protective resistance, prevent the first diode D1 because of the excessive damage of electric current.
It should also be noted that, when the first metal-oxide-semiconductor K1 is turned on, the first diode D1 is also simultaneously turned on；When the first metal-oxide-semiconductor
When K1 ends, the first diode D1 also ends simultaneously.First diode D1 setting is to remind whether user's system is opened
Beginning work, convenient use person learn the working condition of system at any time.
Specifically, current measurement system also includes：Filter unit 800, the filter unit 800 and the partial pressure unit
600 are connected in parallel.
Further, filter unit 800 includes：First electric capacity C1, the first electric capacity C1 is parallel to the 3rd resistor
R3。
It should be noted that the first electric capacity C1 is filter capacitor, the interference signal of current collection circuit is filtered out, improves system
Stability.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed
Carefully, but the limitation to the utility model patent scope therefore can not be interpreted as.It should be pointed out that for the general of this area
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
- A kind of 1. current measurement system, it is characterised in that including：MCU control unit, ADC modular converters and acquisition module, it is described Acquisition module is made up of current collection circuit all the way above, and the ADC modular converters include several ADC converters, each The ADC converters are provided with some collection inputs being connected one by one with the partial pressure output end of current collection circuit, the MCU controls Unit processed has the control signal output that the control signal input with each current collection circuit is connected one by one；The measurement input of the current collection circuit is connected to probe connector I1；The ADC converters communicate to connect with the MCU control unit.
- 2. current measurement system according to claim 1, it is characterised in that the current collection circuit includes：Protection is single Member, switch control unit and partial pressure unit, wherein, the control of the input of the protection location as the current collection circuit Signal input part, the partial pressure output end of the output end of the partial pressure unit as the current collection circuit, the protection location, The switch control unit and the partial pressure unit are linked in sequence successively.
- 3. current measurement system according to claim 2, it is characterised in that the protection location includes：First resistor R1 With second resistance R2, wherein, one end of the first resistor R1 as the protection location input, the first resistor R1 and The connecting node of the second resistance R2 connects as the output end of the protection location and the input of the switch control unit Connect；The first resistor R1 and second resistance R2, which is connected in series, to be followed by reference ground GND.
- 4. current measurement system according to claim 3, it is characterised in that the switch control unit includes：One or three Pole pipe Q1 and the first metal-oxide-semiconductor K1, wherein, the input of the base stage of the first triode Q1 as the switch control unit, Output end of the source electrode of the first metal-oxide-semiconductor K1 as the switch control unit, measurement of the drain as the current measurement Input；The emitter stage of the first triode Q1 is connected with one end of the second resistance R2, colelctor electrode and first metal-oxide-semiconductor K1 grid connection；The source electrode of the first metal-oxide-semiconductor K1 is connected with the output end of the partial pressure unit, and drain electrode is connected to power Vcc.
- 5. current measurement system according to claim 4, it is characterised in that the partial pressure unit includes：3rd resistor R3, Wherein, output end of the 3rd resistor R3 one end as the partial pressure unit, other end connection reference ground GND.
- 6. current measurement system according to claim 4, it is characterised in that the drain electrode of the first metal-oxide-semiconductor K1 and power supply Vcc also connects a display unit.
- 7. current measurement system according to claim 6, it is characterised in that the display unit includes：First diode D1 and the 4th resistance R4, the first diode D1 are connected in series with the 4th resistance R4.
- 8. current measurement system according to claim 5, it is characterised in that also include：Filter unit, the filter unit It is connected in parallel with the partial pressure unit.
- 9. current measurement system according to claim 8, it is characterised in that the filter unit includes：First electric capacity C1, The first electric capacity C1 is parallel to the 3rd resistor R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621430003.XU CN206671419U (en) | 2016-12-25 | 2016-12-25 | A kind of current measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621430003.XU CN206671419U (en) | 2016-12-25 | 2016-12-25 | A kind of current measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671419U true CN206671419U (en) | 2017-11-24 |
Family
ID=60357833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621430003.XU Active CN206671419U (en) | 2016-12-25 | 2016-12-25 | A kind of current measurement system |
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| Country | Link |
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| CN (1) | CN206671419U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470887A (en) * | 2019-09-02 | 2019-11-19 | 珠海格力智能装备有限公司 | Detection device and detection method |
| CN115078818A (en) * | 2022-06-30 | 2022-09-20 | 上海钧嵌传感技术有限公司 | Current detection device and method |
-
2016
- 2016-12-25 CN CN201621430003.XU patent/CN206671419U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470887A (en) * | 2019-09-02 | 2019-11-19 | 珠海格力智能装备有限公司 | Detection device and detection method |
| CN115078818A (en) * | 2022-06-30 | 2022-09-20 | 上海钧嵌传感技术有限公司 | Current detection device and method |
| CN115078818B (en) * | 2022-06-30 | 2023-10-03 | 上海钧嵌传感技术有限公司 | Current detection device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 516006 Factory Building No. 12, Songyang Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Patentee after: Huizhou Jimizhi Technology Co.,Ltd. Address before: 516006 Factory Building No. 12, Songyang Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Patentee before: HUIZHOU GOLDENCHIP ELECTRONIC CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 516000 Houses on Floor [3] and Floor [6] of Plant [1] and [2], Jimi Industrial Park, No. 101, Jinfu Road, Xiaojinkou Street, Huicheng District, Huizhou, Guangdong Province Patentee after: Huizhou Jimi Manufacturing Co.,Ltd. Address before: 516006 Factory Building No. 12, Songyang Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Patentee before: Huizhou Jimizhi Technology Co.,Ltd. |