CN104638604A - Current monitoring system - Google Patents
Current monitoring system Download PDFInfo
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- CN104638604A CN104638604A CN201310557388.0A CN201310557388A CN104638604A CN 104638604 A CN104638604 A CN 104638604A CN 201310557388 A CN201310557388 A CN 201310557388A CN 104638604 A CN104638604 A CN 104638604A
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- current
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Abstract
A current monitoring system is connected to an alternating-current power supply loop consisting of an alternating-current power supply and an electronic device. The alternating-current power supply loop comprises a first power line and a second power line; the current monitoring system comprises a current detecting element, a current signal processing unit, a current switch unit, a switch control circuit and a microprocessor; the current detecting element is coupled to the first power line and the second power line; the current signal processing unit comprises a signal amplifier and an analog-to-digital converter; and the current switch unit comprises a first selector switch and a second selector switch; the first selector switch is serially connected to the first power line; and the second selector switch is serially connected to the second power line. The current monitoring system is simple in structure; current is monitored in real time by a simple circuit; the current monitoring system is convenient to mount; the circuit does not require to be modified; current can be monitored and displayed in real time; data can also be stored in the current monitoring system; and a data support is provided for a user on follow-up analysis.
Description
Technical field
The present invention relates to a kind of current monitoring system.
Background technology
Along with improving constantly of automaticity, the monitoring automatically carrying out electronic installation also gets more and more, and application is also more and more extensive, and it can not only be provided convenience and manage efficiently, also can realize fast processing.
Conventional electronic installation monitoring, needs by monitoring the curtage of electronic installation, to understand electric device information in time.
This current monitoring of the prior art, adopts mechanical structure usually, relative complex and cost is high, and monitored object is relatively simple, easily starts a leak.
For this reason, designer of the present invention is because above-mentioned defect, and by concentrating on studies and designing, comprehensive experience and the achievement being engaged in related industry for a long time for many years, research and design goes out a kind of current monitoring system, to overcome above-mentioned defect.
Summary of the invention
The technical problem to be solved in the present invention is: this current monitoring of the prior art, adopts mechanical structure usually, relative complex and cost is high, and monitored object is relatively simple, easily starts a leak.
For solving the problem, the invention discloses a kind of current monitoring system, be connected to the ac power supply circuit that an AC power and an electronic installation are formed, described ac power supply circuit comprises the first power line and second source line, described first power line and second source line are connected to AC power and electronic installation so that alternating current is supplied described electronic installation, it is characterized in that:
Described current monitoring system comprises current measuring element, current signal processing unit, current switch cell, ON-OFF control circuit and microprocessor;
Described current measuring element is coupled to described first power line and second source line to detect the electric current on described first power line and second source line;
Described current signal processing unit comprises signal amplifier and analogy digital quantizer, described signal amplifier has two inputs, described two inputs are parallel to the two ends of described current measuring element with amplified current signal, the output of described signal amplifier is connected to analogy digital quantizer, and the output of described analogy digital quantizer is connected to described microprocessor thus by analogy digital quantizer, the current signal of amplification is converted to the current value of digital signal to pass to microprocessor;
Described current switch cell comprises the first diverter switch be connected serially on the first power line and the second diverter switch be connected serially on second source line respectively;
The input of described ON-OFF control circuit is connected to described microprocessor with reception control signal, and described ON-OFF control circuit has the output that two are connected to described first diverter switch and the second diverter switch respectively.
Wherein: described current measuring element is zero-current switching device.
Wherein: also include on off state monitoring means, it comprises a comparing element, described comparing element comprises first input end and the second input, described first input end and the second input are connected in parallel to described electronic installation with the voltage condition of electronic installation described in Simultaneous Monitoring, and the output of described comparing element is connected to described microprocessor.
Wherein: described microprocessor also comprises a display unit, memory cell and current reset key, described display unit is connected to described microprocessor to show current signal in real time, described memory cell is connected to described microprocessor to store real time data, and described current reset key is connected to described microprocessor.
Known by said structure, current monitoring system structure of the present invention is simple, the real-time monitoring to electric current is achieved by ball bearing made using, it is easy for installation, without the need to transforming circuit, and real-time current monitoring and display are provided, can also data be stored, for user provides Data support in follow-up analysis.
Detailed content of the present invention obtains by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 shows the structural representation of current monitoring system of the present invention.
Embodiment
See Fig. 1, show current monitoring system of the present invention.
This current monitoring system is connected to the ac power supply circuit that an AC power and an electronic installation 1 are formed, described ac power supply circuit comprises the first power line L1 and second source line L2, and described first power line L1 and second source line L2 is connected to AC power and electronic installation 1 alternating current to be supplied described electronic installation 1.
Described current monitoring system comprises current measuring element 2, current signal processing unit 3, current switch cell 4, ON-OFF control circuit 5, on off state monitoring means 6 and microprocessor 7.
Described current measuring element 2 is coupled to described first power line 1 and second source line 2 to detect the electric current on described first power line L1 and second source line L2, thus detect whether have electric leakage, optionally, described current measuring element 2 is zero-current switching device, accurately to detect the electric current of described first power line L1 and second source line L2, and described current signal is passed to current signal processing unit 3.
Described current signal processing unit 3 comprises signal amplifier 31 and analogy digital quantizer, described signal amplifier 31 has two inputs, described two inputs are parallel to the two ends of described current measuring element 2 with amplified current signal, the output of described signal amplifier 31 is connected to analogy digital quantizer 32, the output of described analogy digital quantizer 32 is connected to described microprocessor 7, thus by analogy digital quantizer 32, the current signal of amplification is converted to the current value of digital signal to pass to microprocessor.
Described current switch cell 4 comprises the first diverter switch 41 be connected serially on the first power line L1 and the second diverter switch 42 be connected serially on second source line L2 respectively.
The input of described ON-OFF control circuit 5 is connected to described microprocessor 7, and with reception control signal, described ON-OFF control circuit 5 has the output that two are connected to described first diverter switch 41 and the second diverter switch 42 respectively.
Described on off state monitoring means 6 comprises a comparing element 61, described comparing element 61 comprises first input end 61a and the second input 62b, described first input end 61a and the second input 62b is connected in parallel to described electronic installation 1 with the voltage condition of electronic installation described in Simultaneous Monitoring 1, and the output of described comparing element 61 is connected to described microprocessor 7.
Thus, when the first diverter switch 41 and the second diverter switch 42 close, described electronic installation 1 is powered, and Condition Monitoring Unit of opening the light 6 monitors voltage, indicates output, and described comparing element 61 sends high potential to microcontroller; When the first diverter switch 41 and the second diverter switch 42 are opened a way, described electronic installation 1 is stopped power supply, Condition Monitoring Unit of opening the light 6 can not arrive voltage, represent and do not export, described comparing element 61 sends electronegative potential to microcontroller, thus, can monitor on off state in time, and whether comparison control signal conforms to.
Now introduce the whole flow process of the application, work as circuit supply, microprocessor receives digitized current signal, and compare with a pre-set current value, if higher than this pre-set current value, then represent current anomaly, output signal to the control that ON-OFF control circuit carries out switch, simultaneously by off state monitoring means 6 feedback signal to judge whether correct execution.
Optionally, described microprocessor 7 also comprises a display unit 71, memory cell 72 and current reset key 73, described display unit 71 is connected to described microprocessor 7 to show current signal in real time, described memory cell 72 is connected to described microprocessor 7 to store real time data, and described current reset key 73 is connected to described microprocessor 7 to provide the artificial reset function to switch.
Known by said structure, current monitoring system structure of the present invention is simple, the real-time monitoring to electric current is achieved by ball bearing made using, it is easy for installation, without the need to transforming circuit, and real-time current monitoring and display are provided, can also data be stored, for user provides Data support in follow-up analysis.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the present invention do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present invention, scope of the present invention will comprise any embodiment of specification and the appended claim fallen into above.
Claims (4)
1. a current monitoring system, be connected to the ac power supply circuit that an AC power and an electronic installation are formed, described ac power supply circuit comprises the first power line and second source line, described first power line and second source line are connected to AC power and electronic installation so that alternating current is supplied described electronic installation, it is characterized in that:
Described current monitoring system comprises current measuring element, current signal processing unit, current switch cell, ON-OFF control circuit and microprocessor;
Described current measuring element is coupled to described first power line and second source line to detect the electric current on described first power line and second source line;
Described current signal processing unit comprises signal amplifier and analogy digital quantizer, described signal amplifier has two inputs, described two inputs are parallel to the two ends of described current measuring element with amplified current signal, the output of described signal amplifier is connected to analogy digital quantizer, and the output of described analogy digital quantizer is connected to described microprocessor thus by analogy digital quantizer, the current signal of amplification is converted to the current value of digital signal to pass to microprocessor;
Described current switch cell comprises the first diverter switch be connected serially on the first power line and the second diverter switch be connected serially on second source line respectively;
The input of described ON-OFF control circuit is connected to described microprocessor with reception control signal, and described ON-OFF control circuit has the output that two are connected to described first diverter switch and the second diverter switch respectively.
2. current monitoring system as claimed in claim 1, is characterized in that: described current measuring element is zero-current switching device.
3. current monitoring system as claimed in claim 1, it is characterized in that: also include on off state monitoring means, it comprises a comparing element, described comparing element comprises first input end and the second input, described first input end and the second input are connected in parallel to described electronic installation with the voltage condition of electronic installation described in Simultaneous Monitoring, and the output of described comparing element is connected to described microprocessor.
4. current monitoring system as claimed in claim 3, it is characterized in that: described microprocessor also comprises a display unit, memory cell and current reset key, described display unit is connected to described microprocessor to show current signal in real time, described memory cell is connected to described microprocessor to store real time data, and described current reset key is connected to described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310557388.0A CN104638604A (en) | 2013-11-11 | 2013-11-11 | Current monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310557388.0A CN104638604A (en) | 2013-11-11 | 2013-11-11 | Current monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104638604A true CN104638604A (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310557388.0A Pending CN104638604A (en) | 2013-11-11 | 2013-11-11 | Current monitoring system |
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| CN (1) | CN104638604A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016177209A1 (en) * | 2015-09-30 | 2016-11-10 | 中兴通讯股份有限公司 | Current detecting circuit and current detecting method |
| CN109672140A (en) * | 2018-12-21 | 2019-04-23 | 重庆国翰能源发展有限公司 | A kind of power supply protection device |
-
2013
- 2013-11-11 CN CN201310557388.0A patent/CN104638604A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016177209A1 (en) * | 2015-09-30 | 2016-11-10 | 中兴通讯股份有限公司 | Current detecting circuit and current detecting method |
| CN109672140A (en) * | 2018-12-21 | 2019-04-23 | 重庆国翰能源发展有限公司 | A kind of power supply protection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |