CN109581029A - A kind of system for detecting multi input end current balance type - Google Patents
A kind of system for detecting multi input end current balance type Download PDFInfo
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- CN109581029A CN109581029A CN201811479585.4A CN201811479585A CN109581029A CN 109581029 A CN109581029 A CN 109581029A CN 201811479585 A CN201811479585 A CN 201811479585A CN 109581029 A CN109581029 A CN 109581029A
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- input terminal
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- detecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention provides a kind of systems for detecting multi input end current balance type, it include: multiple circuit for detecting, each circuit for detecting includes two resistance and a comparator, input terminal accesses the non-inverting input terminal of the comparator after described two electric resistance partial pressures all the way, in addition input terminal all the way is directly accessed the inverting input terminal of the comparator, when the voltage of the non-inverting input terminal is higher than the voltage of the inverting input terminal, the comparator output HIGH voltage；State retaining circuit, the state retaining circuit include diode, and the diode connects the output end in each comparator of the circuit for detecting；And warning circuit, the warning circuit are connected to each diode and sound an alarm in the comparator output HIGH voltage of any circuit for detecting., can be with the current balance type at detecting real-time multi input end according to this system, and structure is simple, high reliablity.
Description
Technical field
Present invention relates in general to circuit detection fields, and flat more particularly, to a kind of detecting multi input end electric current
The system of weighing apparatus.
Background technique
In existing multi-channel input circuit, often input is the port of two or more but exports to be unified end
Mouthful.Since output electric current is increasing, but transmission path and relative impedances can not the contacts of completely the same or some input port
It is bad, cause the electric current of each input terminal different.This is possible to cause a certain input terminal electric current relative to other input terminals
It is excessively high, it is excessive so as to cause the road device heating, influence circuit life and system stability.And in the prior art not
For effective detecting means of multi input end electric current, cause system operation situation that can not learn, system stability can not monitor.
Summary of the invention
In consideration of it, the purpose of the embodiment of the present invention is to propose a kind of system for detecting multi input end current balance type, utilize
Each input terminal curent change will lead to the principle of corresponding input terminal voltage variation, and detecting electricity is reached by comparing input terminal voltage
The purpose of mobile equilibrium.
Based on above-mentioned purpose, the one side of the embodiment of the present invention provides a kind of detecting multi input end current balance type and is
System, comprising:
Multiple circuit for detecting, each circuit for detecting include two resistance and a comparator, and input terminal is through institute all the way
The non-inverting input terminal that the comparator is accessed after two electric resistance partial pressures is stated, input terminal all the way in addition is directly accessed the comparator
Inverting input terminal, when the voltage of the non-inverting input terminal is higher than the voltage of the inverting input terminal, comparator output
High voltage；
State retaining circuit, the state retaining circuit include diode, and the diode connects in the circuit for detecting
The output end of each comparator；And
Warning circuit, the warning circuit are connected to each diode and export high electricity in the comparator of any circuit for detecting
It is sounded an alarm when pressure.
In some embodiments, further include filter circuit, be connected in parallel in every road input terminal by a resistance and one
The resistance-capacitance filter circuit that capacitor is composed in series, to filter out each road input terminal noise.
In some embodiments, the number of the circuit for detecting is identical with the number of the input terminal.
In some embodiments, every road input terminal is by two electric resistance partial pressures for being detected circuit to access a comparison
The non-inverting input terminal of device.
In some embodiments, every road input terminal is also directly accessed the inverting input terminal of a comparator.
It in some embodiments, is not with the comparator being directly accessed with the comparator accessed after the partial pressure of input terminal all the way
Same comparator.
In some embodiments, in the case where input terminal number is greater than two-way, any two-way input terminal only connects jointly
It is connected to a comparator.
In some embodiments, the warning circuit includes light emitting diode, in any one of the circuit for detecting
When comparator output HIGH voltage, the lumination of light emitting diode.
In some embodiments, it is floated and is required according to the input terminal voltage of equipment for the resistance value of two resistance of partial pressure
It is configured.
In some embodiments, the system configuration is used for the electronic equipment using multi-channel input circuit.
The present invention has a kind of following advantageous effects: detecting multi input end current balance type provided in an embodiment of the present invention
System will lead to the principle of corresponding input terminal voltage variation using each input terminal curent change, detected by circuit for detecting each
The voltage of input terminal it is whether excessively high come achieve the purpose that detect input terminal electric current whether balance, this system structure is simple, reliability
Height can freely be set by user, can be used for the various electronic equipments needed using multi-channel input circuit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other embodiments are obtained according to these attached drawings.
Fig. 1 system signal for detecting input terminal current balance type according to an embodiment of the present invention including two-way input terminal
Figure.
Specific embodiment
The following describe embodiment of the disclosure.It should be appreciated, however, that the disclosed embodiments are only example, and
Other embodiments can take various alternative forms.The drawings are not necessarily drawn to scale；Certain functions may be exaggerated or minimum
Change the details to show particular elements.Therefore, specific structure and function details disclosed herein are not necessarily to be construed as restrictive,
And it is merely possible to for instructing those skilled in the art to use representative basis of the invention in various ways.As this field is general
It is logical the skilled person will understand that, the various features with reference to shown or described by any one attached drawing can with it is one or more other
Feature shown in the drawings is combined to produce the embodiment for not being explicitly illustrated or describing.The group of shown feature is combined into typical case
Provide representative embodiment.However, the various combinations and modification of the feature consistent with the introduction of the disclosure are for certain spies
Fixed application or embodiment may be desired.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
The embodiment of the present invention is further described in attached drawing.
It will lead to the principle of corresponding input terminal voltage variation based on input terminal curent change each in multi input terminal circuit, this
Inventive embodiments propose a kind of system for detecting multi input end current balance type, which includes multiple circuit for detecting, state guarantor
Hold circuit and warning circuit.In some embodiments, system of the invention further includes filter circuit.Wherein, it is inputted on every road
End is connected in parallel the resistance-capacitance filter circuit being composed in series by a resistance and a capacitor, is made an uproar with filtering out each road input terminal
Sound；Each circuit for detecting includes two resistance and a comparator, and input terminal accesses comparator after two electric resistance partial pressures all the way
Non-inverting input terminal, input terminal all the way in addition is directly accessed the inverting input terminal of comparator, in the electricity of the non-inverting input terminal
When pressure is higher than the voltage of the inverting input terminal, the comparator output HIGH voltage；State retaining circuit includes diode, two poles
Pipe connects the output end in each comparator of circuit for detecting；And warning circuit is connected to each diode and in any detecting electricity
It is sounded an alarm when the comparator output HIGH voltage on road.It should be appreciated that the resistance value of two resistance for partial pressure need to be according to equipment
Input terminal voltage (electric current) allow floating range and be configured.
In some embodiments, the number of circuit for detecting and the number of input terminal are identical.Every road input terminal can be all detected
Two electric resistance partial pressures of circuit, then access a comparator non-inverting input terminal, every road input terminal also all can not by partial pressure and
It is directly accessed the inverting input terminal of a comparator.Moreover, not accessing the same phase of the same comparator simultaneously with input terminal all the way
Input terminal and inverting input terminal.It is mutual each other without any two-way input terminal in the case where input terminal number is greater than two-way
Non-inverting input terminal and inverting input terminal.For example, inputting (not dividing) with 2 tunnels after the input of 1 tunnel is divided by two resistance
The comparator of a circuit for detecting is inputted together, wherein the non-inverting input terminal of the input of 1 tunnel (i.e. by partial pressure) access comparator,
The inverting input terminal of 2 tunnels input access comparator, the connection type are denoted as 1 (partial pressure) -2.In the case where tetra- road input terminal of You,
There are the input of 1 tunnel, the input of 2 tunnels, the input of 3 tunnels and the input of 4 tunnels.The system includes 4 groups of circuit for detecting, and possible connection mode can be
1 (partial pressure) -2,2 (partial pressure) -3,3 (partial pressure) -4,4 (partial pressure) -1, or 1 (partial pressure) -3,3 (partial pressure) -2,2 (partial pressure) -
4,4 (partial pressure) -1 etc. equiprobable situation.But it in the case where input terminal number is greater than two-way, is inputted without any two-way
Appearance 1 should be avoided that is, in the case where input terminal number is greater than two-way in mutual non-inverting input terminal and inverting input terminal each other at end
The case where (partial pressure) -2,2 (partial pressure) -1, cannot be detected with preventing certain input terminal current anomalies.Equally, every road input
The case where holding the non-inverting input terminal that a comparator is accessed after all having two electric resistance partial pressures for being detected circuit, every road input terminal
Also can all there be the case where not divided and being directly accessed the inverting input terminal of a comparator, also for preventing certain input terminals
Current anomaly and cannot detect, Ying Jinliang avoids such mode of connection.
In some embodiments, warning circuit may include light emitting diode, in any one comparator of circuit for detecting
When output HIGH voltage, the lumination of light emitting diode.It should be appreciated that other other alarm appliances that user can be caused to pay attention to are also
It is possible, such as the voice guard or other combined aural and visual alarms etc. of loudspeaker etc.
According to one embodiment of present invention, as shown in Figure 1, the system of the detecting input terminal current balance type includes filter
Wave circuit 1, circuit for detecting 2, state retaining circuit 3 and warning circuit 4.Resistance R1 and capacitor C1 and resistance R2 and capacitor
C2 respectively forms filter circuit, to filter out the noise of an input terminal, excludes noise jamming.Resistance R3, R4 and comparator M1 composition
One circuit for detecting, multichannel input in one of input terminal Vin_1 by resistance R3, R4 be divided into setting voltage access compare
Device M1 forward end, this voltage are centainly lower than Vin_1 certain proportion, if the voltage after partial pressure is still higher than another access and compares
The input terminal voltage Vin_2 of device M1 negative end, then Vin_1 load too low causes voltage to be apparently higher than Vin_2, comparator M1 output
Otherwise high voltage exports low-voltage；Resistance R5, R6 and comparator M2 form another circuit for detecting, and wherein one in multichannel input
A input terminal Vin_2 is divided into setting voltage by resistance R5, R6 and accesses comparator M2 forward end, this voltage is centainly lower than Vin_
2 certain proportions judge that Vin_1 load too high causes voltage significantly lower than Vin_2, compare if Vin_1 is lower than branch pressure voltage
Device M2 output HIGH voltage, otherwise exports low-voltage.Diode D1, D2 form state retaining circuit, prevent over-voltage circuit for detecting and
Low pressure circuit for detecting output end interferes with each other, as long as soon as output HIGH voltage, state retaining circuit in the two circuit for detecting
Output HIGH voltage.Light emitting diode D3 forms warning circuit, and when state retaining circuit output HIGH voltage, D3 shines, and issues police
Report.
Embodiment according to the present invention can be used for the various electronic equipments needed using multi-channel input circuit, to detect in real time
The current balance type for surveying multi input end, improves the stability and reliability of equipment.
Technically in feasible situation, it can be combined with each other above in relation to technical characteristic cited by different embodiments,
Or change, add and omit etc., to form the additional embodiment in the scope of the invention.
From above-described embodiment as can be seen that a kind of system for detecting multi input end current balance type provided in an embodiment of the present invention
The principle that will lead to corresponding input terminal voltage variation using each input terminal curent change, each input terminal is detected by circuit for detecting
Voltage it is whether excessively high achieve the purpose that detect whether input terminal electric current balances, this system structure is simple, high reliablity, can be with
It is freely set by user, can be used for the various electronic equipments needed using multi-channel input circuit.
Those skilled in the art will also understand is that, various illustrative logical blocks, mould in conjunction with described in disclosure herein
Block, circuit may be implemented as the combination of electronic device and connection type.Those skilled in the art can specifically answer for every kind
The function is realized in various ways, but this realization should not be interpreted as causing a departure from the embodiment of the present invention and disclose
Range.
It is exemplary embodiment disclosed by the invention above, it should be noted that in the sheet limited without departing substantially from claim
Under the premise of inventive embodiments scope of disclosure, it may be many modifications and modify.According to open embodiment described herein
The function of claim to a method, step and/or movement be not required to the execution of any particular order.In addition, although the present invention is implemented
Element disclosed in example can be described or be required in the form of individual, but be unless explicitly limited odd number, it is understood that be multiple.
It should be understood that it is used in the present context, unless the context clearly supports exceptions, singular " one
It is a " it is intended to also include plural form.It is to be further understood that "and/or" used herein refers to including one or one
Any and all possible combinations of a above project listed in association.
It is for illustration only that the embodiments of the present invention disclose embodiment sequence number, does not represent the advantages or disadvantages of the embodiments.
Above-described embodiment is the possibility example of embodiment, and is mentioned just to be clearly understood that the principle of the present invention
Out.It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, it is not intended that dark
Show that range disclosed by the embodiments of the present invention (including claim) is limited to these examples；Under the thinking of the embodiment of the present invention,
It can also be combined, and exist present invention as described above between technical characteristic in above embodiments or different embodiments
Many other variations of the different aspect of embodiment, for simplicity, they are not provided in details.Therefore, all of the invention real
It applies within the spirit and principle of example, any omission, modification, equivalent replacement, improvement for being made etc. should be included in implementation of the present invention
Within the protection scope of example.
Claims (10)
1. a kind of system for detecting multi input end current balance type characterized by comprising
Multiple circuit for detecting, each circuit for detecting include two resistance and a comparator, and input terminal is through described two all the way
The non-inverting input terminal of the comparator is accessed after a electric resistance partial pressure, input terminal all the way in addition is directly accessed the anti-of the comparator
Phase input terminal, when the voltage of the non-inverting input terminal is higher than the voltage of the inverting input terminal, the high electricity of comparator output
Pressure；
State retaining circuit, the state retaining circuit include diode, and the diode connects in each of described circuit for detecting
The output end of comparator；And
Warning circuit, the warning circuit are connected to each diode and in the comparator output HIGH voltages of any circuit for detecting
It sounds an alarm.
2. system according to claim 1, which is characterized in that further include filter circuit, be connected in parallel in every road input terminal
The resistance-capacitance filter circuit being composed in series by a resistance and a capacitor, to filter out each road input terminal noise.
3. system according to claim 1, which is characterized in that the number of the number of the circuit for detecting and the input terminal
It is identical.
4. system according to claim 3, which is characterized in that every road input terminal by circuit for detecting two electric resistance partial pressures
To access the non-inverting input terminal of a comparator.
5. system according to claim 4, which is characterized in that every road input terminal is also directly accessed the reverse phase of a comparator
Input terminal.
6. system according to claim 5, which is characterized in that with the comparator accessed after the partial pressure of input terminal all the way and directly
The comparator of access is different comparator.
7. system according to claim 6, which is characterized in that in the case where input terminal number is greater than two-way, any two
Road input terminal is only commonly connected to a comparator.
8. system according to claim 1, which is characterized in that the warning circuit includes light emitting diode, is detectd described
When any one comparator output HIGH voltage of slowdown monitoring circuit, the lumination of light emitting diode.
9. system according to claim 1, which is characterized in that the resistance value of two resistance for partial pressure is according to the defeated of equipment
Enter to hold voltage to float to require to be configured.
10. system according to claim 1, which is characterized in that the system configuration is used for using multi-channel input circuit
Electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479585.4A CN109581029A (en) | 2018-12-05 | 2018-12-05 | A kind of system for detecting multi input end current balance type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479585.4A CN109581029A (en) | 2018-12-05 | 2018-12-05 | A kind of system for detecting multi input end current balance type |
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| CN109581029A true CN109581029A (en) | 2019-04-05 |
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| CN201811479585.4A Pending CN109581029A (en) | 2018-12-05 | 2018-12-05 | A kind of system for detecting multi input end current balance type |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201083789Y (en) * | 2007-09-14 | 2008-07-09 | 厦门科华恒盛股份有限公司 | Device for detecting DC far-conveyed power line on current unbalancing |
| CN103038848A (en) * | 2010-05-06 | 2013-04-10 | 伊顿电气Ip两合公司 | Current measuring method for switchgear having current paths connected in parallel |
| CN103149417A (en) * | 2013-01-30 | 2013-06-12 | 北京信诺达泰思特科技股份有限公司 | Circuit measuring module and method for measuring voltage difference of power source device |
-
2018
- 2018-12-05 CN CN201811479585.4A patent/CN109581029A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201083789Y (en) * | 2007-09-14 | 2008-07-09 | 厦门科华恒盛股份有限公司 | Device for detecting DC far-conveyed power line on current unbalancing |
| CN103038848A (en) * | 2010-05-06 | 2013-04-10 | 伊顿电气Ip两合公司 | Current measuring method for switchgear having current paths connected in parallel |
| CN103149417A (en) * | 2013-01-30 | 2013-06-12 | 北京信诺达泰思特科技股份有限公司 | Circuit measuring module and method for measuring voltage difference of power source device |
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Application publication date: 20190405 |