CN208705396U - Current sensor - Google Patents
Current sensor Download PDFInfo
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- CN208705396U CN208705396U CN201820939319.4U CN201820939319U CN208705396U CN 208705396 U CN208705396 U CN 208705396U CN 201820939319 U CN201820939319 U CN 201820939319U CN 208705396 U CN208705396 U CN 208705396U
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Abstract
The utility model embodiment discloses a kind of current sensor, comprising: current sensitive element, for incuding tested primary current signal to obtain inductive signal；Conditioning circuit, for being improved the inductive signal to obtain analog signal；Analog output interface circuit connects the conditioning circuit, for external secondary meter and exports the analog signal to the secondary meter；Analog to digital conversion circuit connects the conditioning circuit；Indicator light light bar is used to indicate the size of the tested primary current signal；And microprocessor, analog-digital conversion circuit as described and the indicator light light bar are connected, calculation process obtains the size of the tested primary current signal and the indicator light light bar according to preset driven by program indicates with preset mode the size of the tested primary current signal for carrying out according to internal algorithm to the digital signal.The utility model embodiment can be convenient, fast, intuitively obtain the size information of tested primary current signal.
Description
Technical field
The utility model relates to current measurement techniques field more particularly to a kind of current sensors.
Background technique
Current sensor is commonly used to electric current verification test, Industry Control etc..Current sensor is a kind of energy impression
To the information of tested primary current signal, it will test the information experienced and be for conversion into according to certain rules and meet certain standard needs
Electric signal or other required forms information output detection device, can satisfy the transmission of information, processing, storage, display,
Record and control etc. require.As shown in Figure 1, the main sampling front-end of estimated current sensor is tested primary current signal, according to solid
Determine turn ratio and export secondary output signal, secondary output signal is generally the analog signal of voltage or the magnitude of current, by secondary meter
It is big to obtain currently tested primary current signal by calculation process for the secondary output signal of sample rate current sensor output
It is small.
Existing current sensor is typically arranged with display lamp, and indicator light mainly has power supply electromotion pilot lamp (when power supply is led
General rule lamp is bright, closes then lamp and goes out) or Current Sensor Status indicator light (when current sensor works normally, transmission data then lamp
Bright, then lamp goes out current sensor faults) two kinds of functional attributes.Therefore, existing current sensor do not have directly display by
Survey the function of primary current signal magnitude, incidental indicator light only indicator current sensor current working status.That is, existing
Some current sensors only configure the indicator light of the conducting of display power supply and working sensor state, are only capable of in test at the scene straight
Whether the understanding current flow working sensor operation of sight, currently tested primary current signal magnitude is not known that.In general, in order to
Currently tested primary current signal magnitude is obtained, needs to access by secondary meter, sample rate current sensor exports secondary defeated
It can just be obtained after signal out, generally require to carry out system building and many and diverse connection.
Therefore, it is badly in need of proposing a kind of current sensor that can intuitively understand current tested primary current signal magnitude.
Utility model content
The embodiments of the present invention provide a kind of current sensor, are set again by the structure to current sensor
Meter can convenient, fast, intuitively obtain the size information of tested primary current signal according to current sensor.
On the one hand, a kind of current sensor provided by the embodiment of the utility model, comprising: current sensitive element, for feeling
Primary current signal should be tested to obtain inductive signal；Conditioning circuit connects the current sensitive element, for the induction
Signal is improved to obtain analog signal；Analog output interface circuit connects the conditioning circuit, for external secondary meter,
And the analog signal is exported to the secondary meter；Analog to digital conversion circuit connects the conditioning circuit, is used for the simulation
Signal is converted to digital signal；Indicator light light bar, including multiple indicator lights are used to indicate the big of the tested primary current signal
It is small；And microprocessor, analog-digital conversion circuit as described and the indicator light light bar are connected, for transporting to the digital signal
Calculation handles to obtain the size of the tested primary current signal, and for driving the indicator light light bar to refer to indicator lamp brightness
Show size of current mode, indicator light rotation speed indicator current size mode, indicator light light bar coding indicator current size mode
Or indicator light flash speed indicator current size mode indicates the size of the tested primary current signal.
In one embodiment of the utility model, the indicator lamp brightness indicator current size mode is by being lit
The brightness size of indicator light indicate the size of the tested primary current signal；The indicator light rotation speed indicator current
Size mode is to be indicated the size of the tested primary current signal by the velocity magnitude lighted is recycled by indicator light；It is described
Indicator light light bar coding indicator current size mode is to extinguish composition by representing lighting for the indicator light of different binary digits
The size of binary number indicates the size of the tested primary current signal；The indicator light flash speed indicator current size
Mode is the size for being lit the flash speed size of extinguishing by indicator light to indicate the tested primary current signal.
In one embodiment of the utility model, the current sensor further includes shell, and the indicator light light bar is set
Set the shell outer surface or be arranged in the shell and the light-emitting surface of the multiple indicator light is exposed in the shell
In vitro.
In one embodiment of the utility model, the housing central section is formed through hole, and the indicator light light bar is
The annular and circular through hole is arranged.
In one embodiment of the utility model, the current sensor further include: communication interface, the communication interface
Connect the microprocessor.
In one embodiment of the utility model, the current sensor further includes power supply, for passing for the electric current
Sensor power supply.
Above-mentioned technical proposal can have following one or more advantages: be carried out again by the structure to current sensor
Design can convenient, fast, intuitively obtain the size information of tested primary current signal according to current sensor.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of application scenario diagram of current sensor of the prior art；
Fig. 2A is a kind of electrical block diagram of current sensor of the utility model one embodiment；
Fig. 2 B is a kind of surface structure schematic diagram of the current sensor of the utility model one embodiment；
Fig. 2 C is the work of the utility model one embodiment under indicator light rotation speed indicator current size mode
The instruction process schematic of instruction light bar；
Fig. 2 D is that the work of the utility model one embodiment encodes under indicator current size mode in indicator light light bar
The instruction process schematic of instruction light bar.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that empty circles represent the indicator light for being in OFF state in Fig. 2 C and 2D, there is " X "
The circle of shape filling line indicates the indicator light for being in illuminating state.
As shown in Figure 2 A, a kind of current sensor 100 that the utility model one embodiment provides, specifically includes that electric current
Sensing element 110, conditioning circuit 120, analog output interface circuit 130, analog to digital conversion circuit 150, indicator light light bar 160 and Wei Chu
Manage device 170.
Wherein, current sensitive element 110 is for example for incuding tested primary current signal to obtain inductive signal and export
To late-class circuit.Inductive signal herein is, for example, analog quantity.
Conditioning circuit 120 for example connects current sensitive element 110, to receive the sense of the output of current sensitive element 110
Induction signal, and the inductive signal is improved to obtain analog signal.In general, the inductive signal of current sensitive element output
It cannot be converted directly into digital signal, because the inductive signal of current sensitive element output is fairly small curent change,
Must be improved before transforming it into digital signal, such as amplify, buffer or calibrate inductive signal etc..
Analog output interface circuit 130 for example connects conditioning circuit 120, the simulation letter that receiving conditioning circuit 120 exports
Number and export give analog output interface circuit 130 connection external circuit, specifically, analog output interface circuit 130 is for example external
Secondary meter simultaneously exports the analog signal to the secondary meter, thus current sensitive element 110, conditioning circuit 120 and mould
Analog quantity output interface 130 realizes the effect of conventional current sensors in the prior art jointly.Secondary meter is, for example, electric current
Table, so as to show the size of the tested primary current signal.
Analog to digital conversion circuit 140 for example connects conditioning circuit 120, the analog signal that receiving conditioning circuit 120 exports,
And carrying out analog-to-digital conversion to the analog signal makes it be converted to digital signal.
Indicator light light bar 150 is used to indicate the big of the tested primary current signal for example including multiple indicator lights 151
It is small.Specifically, multiple indicator lights 151 are for example cascaded, and then connect microprocessor 160.Certainly, in some other reality
Apply in example, multiple indicator lights 151 for example can also be multiple independent indicator lights 151, each indicator light 151 for example respectively with it is micro-
Processor 160 connects.It is lighted by multiple indicator lights 151 according to certain rule and extinguishes to cooperate instruction described tested
The size of primary current signal.
Microprocessor 160 for example connects analog to digital conversion circuit 140 and indicator light light bar 150, for according to internal algorithm pair
The digital signal carries out calculation process and obtains the size of the tested primary current signal, and is referred to according to preset driven by program
Show that lamp light bar 140 indicates the size of the tested primary current signal with preset mode.Microprocessor 160 is, for example, MPU
(Micro Processor Unit) chip.
Specifically, the preset mode is for example selected from indicator lamp brightness indicator current size mode, indicator light rotation speed
Indicator current size mode, indicator light light bar coding indicator current size mode and indicator light flash speed indicator current size side
Formula.
Here, the indicator lamp brightness indicator current size mode is, for example, to pass through the brightness for the indicator light 151 being lit
Size indicates the size of the tested primary current signal.Specifically, indicator light is adjusted by control driving current size
The brightness of indicator light 151 some or all of in light bar 150.For example, the brightness for the indicator light 151 being lit is higher, then indicate
Tested primary current signal is bigger；The brightness for the indicator light 151 being lit is lower, then indicates that tested primary current signal is smaller.
In some other embodiment, when the preset mode is the indicator lamp brightness indicator current size mode, indicator light lamp
Band 150 can also only include an indicator light 151.
The indicator light rotation speed indicator current size mode is, for example, to pass through the speed that indicator light 151 is lighted by circulation
Size indicates the size of the tested primary current signal.Specifically, as shown in Figure 2 C, pass through control instructions lamp light bar 150
In some or all of the circulation of indicator light 151 light, it is faster to recycle the speed lighted, then indicates that tested primary current signal is got over
Greatly；It is slower that circulation lights speed, then indicates that tested primary current signal is smaller.
The indicator light light bar coding indicator current size mode is, for example, the indicator light by representing different binary digits
151 light extinguishes the size of the binary number of composition to indicate the size of the tested primary current signal.Specifically, it indicates
Each indicator light 151 in lamp light bar 150 represents bit.Indicator light 151 is lit, and represents the indicator light 151
Numerical value in representative binary digit is 1, and indicator light 151 is off, and represents binary digit representated by the indicator light 151
On numerical value be 0, then all indicator lights 151 of indicator light light bar 150 are lit or are off state constitutes a position N two
System number, wherein N is equal to the number of the indicator light 151 in indicator light light bar 150.The numerical value of N bit is bigger, then indicates
Tested primary current signal is bigger, and the numerical value of N bit is smaller, then indicates that tested primary current signal is smaller.Citing comes
It says, the as shown in Figure 2 D one annular indicator light light bar including 8 indicator lights is defined since that indicator light of the top,
Traverse the indicator light sequence that all indicator lights obtain clockwise are as follows: 151a, 151b, 151c, 151d, 151e, 151f, 151g and
151h, respectively representing 8 bits is, for example, B7B6B5B4B3B2B1B08 binary digit B from left to right7、B6、B5、
B4、B3、B2、B1And B0.The state shown in figure is lit for indicator light 151a and represents binary digit B7Value be 1, remaining instruction
Lamp is all off, and represents binary digit B6、 B5、B4、B3、B2、B1And B0Value be 0, therefore, corresponding binary number
Size is 10000000 (decimal numbers 27).In some other embodiment, indicator light light bar 150 can also be only selected that
In part indicator light 151 realize indicator light light bar coding indicator current size mode.
The indicator light flash speed indicator current size mode is, for example, the part or complete passed through in indicator light light bar 150
The indicator light 151 in portion is lit the flash speed size of extinguishing to indicate the size of the tested primary current signal.Pass through control
The bright flashing for extinguishing formation of indicator light point 151 processed carrys out indicator current size, and flash speed is faster, indicates that tested electric current is bigger, dodges
Bright speed is slower, indicates that tested electric current is smaller.When the preset mode is the indicator light flash speed indicator current size side
When formula, indicator light light bar 150 can also only include an indicator light 151.
Further, indicator light 151 of multiple indicator lights 151 for example including multiple and different colors.Accordingly, described preset
Mode can also be indicator light colors indicator current size mode.
Wherein, the indicator light colors indicator current size mode is, for example, the indicator light 151 by lighting different colours
To indicate the size of the tested primary current signal.Specifically, by configuring different colours indicator light 151, different colours refer to
Show that lamp 151 respectively represents different size of tested primary current signal, thus, in microprocessor 160 according to internal algorithm to institute
Digital signal is stated to carry out after calculation process obtains the size of the tested primary current signal, it can be according to the obtained quilt
The size of primary current signal is surveyed to light the indicator light 151 of corresponding color, to realize that the tested primary current signal of instruction is big
Small function.
Further, as shown in Figure 2 B, current sensor 100 for example further includes shell 170, and indicator light light bar 150 is for example
The outer surface of shell 170 is set.170 middle part of shell is for example formed through hole 171 (or feedthrough hole), indicator light light bar
150 are, for example, annular and are arranged around through hole 171.Certainly, the utility model embodiment is not limited thereto, shell in Fig. 2 B
The shape of body 170 is only to illustrate, and indicator light light bar 150 can also be for example arranged in shell 170 in some other embodiment
And the light-emitting surface of multiple indicator lights 151 is exposed outside shell 170, as long as the light that can guarantee that multiple indicator lights 151 issue can
It is observed by the external world；In addition, indicator light light bar 150 for example can also be linear shape or other possible shapes
Shape, such as triangle, rectangle, trapezoidal, square etc..
Current sensor 100 is for example further include: communication interface 180.Communication interface 180 connects microprocessor 160 and is used for
The externally input preset program is received, by communication interface 180, current sensor 100 be may be implemented to preset program
Upgrading is updated, such as preset program newly developed can be added to realize preset mode newly developed.Certainly, the preset program
It can also be and be stored into microprocessor 160 in advance, call directly the preset program stored in advance at work i.e.
Can, in such cases, current sensor can not also include communication interface 180.
Current sensor 100 for example further includes power supply 190, and power supply 190 is used to power for current sensor 100.Specifically
Ground, power supply 190 for example connect each component part of current sensor 100, and the quantity of power supply 190 may be multiple.When
So, it can not also include power supply 190 inside current sensor 100 in some other embodiment, but use external power supply.
In conclusion the utility model previous embodiment is by the redesign to current sensor structure, in existing electricity
Analog to digital conversion circuit 150, indicator light light bar 160, microprocessor 170, communication interface 180 are increased on the basis of flow sensor
And/or power supply 190, outside the function that thus can not only have conventional current sensor, indicator light light bar can also be passed through
Display state directly to indicate the size of currently tested primary current signal.The utility model embodiment can be efficiently applied to electricity
Flow measurement and relevant control field.
In several embodiments provided herein, it should be understood that disclosed system, device and/or method, it can
To realize by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit/
The division of module, only a kind of logical function partition, there may be another division manner in actual implementation, such as multichannel unit
Or module can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, institute
Display or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit
Indirect coupling or communication connection can be electrical property, mechanical or other forms.
The units/modules as illustrated by the separation member may or may not be physically separated, as
The component that units/modules are shown may or may not be physical unit, it can and it is in one place, or can also be with
It is distributed on multi-channel network unit.Some or all of units/modules therein can be selected to realize according to the actual needs
This embodiment scheme purpose.
In addition, each functional unit/module in each embodiment of the utility model can integrate a processing unit/
In module, it is also possible to each unit/module and physically exists alone, can also be integrated in two or more units/modules
In one units/modules.Above-mentioned integrated units/modules both can take the form of hardware realization, can also be added using hardware
SFU software functional unit/module form is realized.
The above-mentioned integrated units/modules realized in the form of SFU software functional unit/module, can store and calculate at one
In machine read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions use so that
The one or more processors of one computer equipment (can be personal computer, server or the network equipment etc.) execute
The part steps of each embodiment the method for the utility model.And storage medium above-mentioned include: USB flash disk, it is mobile hard disk, read-only
Memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation
RAM), the various media that can store program code such as magnetic or disk.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (6)
1. a kind of current sensor characterized by comprising
Current sensitive element, for incuding tested primary current signal to obtain inductive signal；
Conditioning circuit connects the current sensitive element, for being improved the inductive signal to obtain analog signal；
Analog output interface circuit connects the conditioning circuit, for external secondary meter and exports the analog signal to described
Secondary meter；
Analog to digital conversion circuit connects the conditioning circuit, for the analog signal to be converted to digital signal；
Indicator light light bar, including multiple indicator lights are used to indicate the size of the tested primary current signal；And
Microprocessor connects analog-digital conversion circuit as described and the indicator light light bar, for carrying out operation to the digital signal
Processing obtains the size of the tested primary current signal, and for driving the indicator light light bar to indicate with indicator lamp brightness
Size of current mode, indicator light rotation speed indicator current size mode, indicator light light bar coding indicator current size mode or
Indicator light flash speed indicator current size mode indicates the size of the tested primary current signal.
2. current sensor as described in claim 1, which is characterized in that the indicator lamp brightness indicator current size mode is
The size of the tested primary current signal is indicated by the brightness size for the indicator light being lit；The indicator light rotation speed
Degree indicator current size mode is to be recycled the velocity magnitude lighted by indicator light to indicate the tested primary current signal
Size；The indicator light light bar coding indicator current size mode is by representing lighting for the indicator light of different binary digits
Extinguish the size of the binary number of composition to indicate the size of the tested primary current signal；The indicator light flash speed refers to
Show that size of current mode is to be lit the flash speed size of extinguishing by indicator light to indicate the tested primary current signal
Size.
3. current sensor as described in claim 1, which is characterized in that the current sensor further includes shell, the finger
Show that lamp light bar is arranged in the outer surface of the shell or is arranged in the shell and the light-emitting surface of the multiple indicator light is naked
It is exposed at outside the shell.
4. current sensor as claimed in claim 3, which is characterized in that the housing central section is formed through hole, the finger
Show that lamp light bar is arranged for annular and around the through hole.
5. current sensor as described in claim 1, which is characterized in that the current sensor further include: communication interface, institute
It states communication interface and connects the microprocessor.
6. current sensor as described in claim 1, which is characterized in that the current sensor further includes power supply, for for
The current sensor power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820939319.4U CN208705396U (en) | 2018-06-19 | 2018-06-19 | Current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820939319.4U CN208705396U (en) | 2018-06-19 | 2018-06-19 | Current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705396U true CN208705396U (en) | 2019-04-05 |
Family
ID=65936270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820939319.4U Active CN208705396U (en) | 2018-06-19 | 2018-06-19 | Current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208705396U (en) |
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2018
- 2018-06-19 CN CN201820939319.4U patent/CN208705396U/en active Active
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