CN205049651U - Alternating voltage's wireless real -time monitoring system - Google Patents
Alternating voltage's wireless real -time monitoring system Download PDFInfo
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- CN205049651U CN205049651U CN201520813494.5U CN201520813494U CN205049651U CN 205049651 U CN205049651 U CN 205049651U CN 201520813494 U CN201520813494 U CN 201520813494U CN 205049651 U CN205049651 U CN 205049651U
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Abstract
The utility model discloses an alternating voltage's wireless real -time monitoring system. It includes voltage transformer, voltage transformer's signal output part connects signal amplifier, signal amplifier is connected with AD converting circuit, AD converting circuit connects one the 1st processing unit, a processing unit connects wireless transmitting module and can launch the signal of AD converting circuit output through wireless transmitting module, still include a wireless receiving module, one the 2nd processing unit is connected to the output of wireless receiving module, the 2nd processing unit connects display element can be with the 2nd processing unit received signal display on display element. After adopting foretell structure, its structural design is simply reasonable, with low costs, the operation is reliable, and measuring range is big, and measurement accuracy is high, and fractional error is little and measurement of efficiency high, can be used to the occasion of various unsuitable staff's long term operations, has eliminated traditional manual work and has measured the potential safety hazard that exists.
Description
Technical field
The utility model relates to a kind of supervisory system of alternating voltage, specifically a kind of wireless real-time monitoring system of alternating voltage.
Background technology
Along with raising that is information-based and intelligence degree, need to use various kinds of sensors system; Don't work which type of physical quantity of which type of sensor measurement, all voltage signal will be converted it into measure, so the measurement to voltage signal, become extremely important, the occasion of some site environment difference or narrow space, such as needs the change in voltage situation of monitoring electrical equipment in certain small space, the occasion etc. that working environment is too warm or Keep Clear-High Voltage, just improper by manually having carried out this work, not only measure efficiency low, and there is very large potential safety hazard.
Summary of the invention
The technical problems to be solved in the utility model be to provide a kind of can the wireless real-time monitoring system of alternating voltage of effective value of Real-Time Monitoring alternating voltage.
In order to solve the problems of the technologies described above, the wireless real-time monitoring system of alternating voltage of the present utility model, comprise the voltage transformer (VT) being connected to and exchanging and also the RMS-DC converter of AC signal to be measured can be become direct current signal in measure loop, the signal output part connection signal amplifier of voltage transformer (VT), signal amplifier is connected with the A/D convertor circuit that the simulating signal received can be converted to digital signal, A/D convertor circuit connects first processing unit, first processing unit connects wireless transmitter module and the signal that A/D convertor circuit exports can be launched by wireless transmitter module, also comprise one for receiving the wireless receiving module of wireless transmitter module institute signal transmission, the output terminal of wireless receiving module connects second processing unit, the Signal aspects that second processing unit also can receive by the second processing unit connection display unit on the display unit.
Described first processing unit and the second processing unit are single-chip microcomputer.
Described voltage transformer (VT) is AD736 detection chip.
Described display unit is liquid crystal display.
After adopting above-mentioned structure, by being connected to the voltage transformer (VT) exchanged in measure loop, the RMS-DC converter of AC signal to be measured is become direct current signal, then amplify process through signal amplifier and output in the first processing unit after A/D convertor circuit conversion and process, then radio receiving transmitting module is passed through, measuring junction is separated with monitoring display end, achieve the object of Real-Time Monitoring, its structural design advantages of simple, cost is low, reliable, measurement range is large, measuring accuracy is high, relative error is little and to measure efficiency high, can be used for the various occasion being not suitable for staff's long-term work, eliminate the potential safety hazard existing for Traditional Man measurement.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the wireless real-time monitoring system of the utility model alternating voltage.
Embodiment
Below in conjunction with the drawings and specific embodiments, the wireless real-time monitoring system of alternating voltage of the present utility model is described in further detail.
As shown in the figure, the wireless real-time monitoring system of alternating voltage of the present utility model, comprise the voltage transformer (VT) being connected to and exchanging and also the RMS-DC converter of AC signal to be measured can be become direct current signal in measure loop, the signal output part connection signal amplifier of voltage transformer (VT), signal amplifier is connected with the A/D convertor circuit that the simulating signal received can be converted to digital signal, A/D convertor circuit connects first processing unit, first processing unit connects wireless transmitter module and the signal that A/D convertor circuit exports can be launched by wireless transmitter module, also comprise one for receiving the wireless receiving module of wireless transmitter module institute signal transmission, the output terminal of described wireless receiving module connects second processing unit, the Signal aspects that second processing unit also can receive by the second processing unit connection display unit on the display unit.
Wherein, in the utility model, said first processing unit and the second processing unit are single-chip microcomputer, single-chip microcomputer can adopt STC12C5A60S2 single-chip microcomputer, and said voltage transformer (VT) is preferably AD736 detection chip, and AD736 is through the monolithic accurate real effective AC/DC converter of laser correction, its output terminal is DC voltage, sizes values equals the alternating voltage effective value of input end, because AD736 effective value converter maximum input voltage is 200mV, so initialize signal must be decayed to 0 to 200mV with current mode voltage transformer (VT), said radio receiving transmitting module (wireless transmitter module and wireless receiving module) can adopt Nrf24L01 radio receiving transmitting module send data and receive, if consider application request, need to increase transmission of wireless signals distance, penetrate obstacle ability and stability, then need to increase cost, attaching antenna, change more powerful, the wireless module that the stronger penetration range of penetration power is larger is as serial in Si4432, said display unit is liquid crystal display.
By structural design of the present utility model, the RMS-DC converter of AC signal to be measured is become certain interval direct current signal by voltage transformer (VT) (as AD736); Amplified with operational amplification circuit; A/D convertor circuit converts simulating signal to digital signal; Launched by wireless transmitter module by Single-chip Controlling digital signal; Receiving end receives digital signal by wireless receiving module, and the Signal aspects that single-chip microcomputer receives, on liquid crystal display, just can complete the Real-Time Monitoring of alternating voltage.
The HEX file download of C programmer by Keil Software Create is tested to single-chip microcomputer.And the sinusoidal ac signal of 0 ~ 250V is tested, test experiments result is as shown in the table:
Test experiments result shows, in 20 meters of spacious measuring distances in indoor, the 50Hz sinusoidal signal within the scope of stochastic inputs 0 ~ 250V, after exporting effective value conversion, error can ensure substantially in 1.5% scope, and average error is 0.77%.Measurement range 0 ~ 600V, the resolution measuring display can be reached for 0.01V, and relative error is less than 1%.
Claims (4)
1. the wireless real-time monitoring system of an alternating voltage, it is characterized in that: comprise the voltage transformer (VT) being connected to and exchanging and also the RMS-DC converter of AC signal to be measured can be become direct current signal in measure loop, the signal output part connection signal amplifier of described voltage transformer (VT), described signal amplifier is connected with the A/D convertor circuit that the simulating signal received can be converted to digital signal, described A/D convertor circuit connects first processing unit, described first processing unit connects wireless transmitter module and the signal that A/D convertor circuit exports can be launched by wireless transmitter module, also comprise one for receiving the wireless receiving module of wireless transmitter module institute signal transmission, the output terminal of described wireless receiving module connects second processing unit, the Signal aspects that second processing unit also can receive by described second processing unit connection display unit on the display unit.
2. according to the wireless real-time monitoring system of alternating voltage according to claim 1, it is characterized in that: described first processing unit and the second processing unit are single-chip microcomputer.
3. according to the wireless real-time monitoring system of alternating voltage according to claim 1, it is characterized in that: described voltage transformer (VT) is AD736 detection chip.
4. according to the wireless real-time monitoring system of alternating voltage according to claim 1, it is characterized in that: described display unit is liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813494.5U CN205049651U (en) | 2015-10-21 | 2015-10-21 | Alternating voltage's wireless real -time monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813494.5U CN205049651U (en) | 2015-10-21 | 2015-10-21 | Alternating voltage's wireless real -time monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205049651U true CN205049651U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520813494.5U Expired - Fee Related CN205049651U (en) | 2015-10-21 | 2015-10-21 | Alternating voltage's wireless real -time monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205049651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787359A (en) * | 2019-01-31 | 2019-05-21 | 深圳供电局有限公司 | Distribution network load monitoring device and distribution system |
-
2015
- 2015-10-21 CN CN201520813494.5U patent/CN205049651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787359A (en) * | 2019-01-31 | 2019-05-21 | 深圳供电局有限公司 | Distribution network load monitoring device and distribution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20171021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |