CN209784444U - Wireless phase telemetering device - Google Patents
Wireless phase telemetering device Download PDFInfo
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- CN209784444U CN209784444U CN201822056131.8U CN201822056131U CN209784444U CN 209784444 U CN209784444 U CN 209784444U CN 201822056131 U CN201822056131 U CN 201822056131U CN 209784444 U CN209784444 U CN 209784444U
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- 238000012545 processing Methods 0.000 claims abstract description 31
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000007667 floating Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model provides a wireless phase place telemetering device, includes host computer and extension, host computer and extension include signal acquisition module, signal amplification module, analog-to-digital conversion module, data processing module and wireless communication module respectively, host computer data processing module and extension data processing module adopt the singlechip of taking floating point calculation function respectively, connect the calibration line between host computer data processing module time calibration mouth and extension data processing module time calibration mouth, host computer data processing module output time reference pulse, extension data processing module is through receiving the time reference pulse that the host computer sent and accomplish the time calibration. The wireless remote sensing of phase place can be carried out, the time synchronization of main and extension is realized, measurement accuracy is high, personnel intensity of labour is reduced, and work efficiency is improved.
Description
Technical Field
The utility model relates to a relay protection field especially relates to a wireless phase place remote measuring device.
Background
The phase telemetering device is a measuring device commonly used by the power sector for measuring the phase. The method adopts a wired measurement mode, needs wiring according to measurement requirements, sometimes the wiring length reaches hundreds of meters, the measurement precision is low, the labor intensity of testers is high, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned problem that prior art exists, provide a wireless phase place telemetering measurement device.
The technical solution of the utility model is that: a wireless phase telemetry unit, characterized by: the system comprises a host and an extension, wherein the host and the extension respectively comprise a signal acquisition module, a signal amplification module, an analog-to-digital conversion module, a data processing module and a wireless communication module; a calibration line is assembled between a time calibration port of a host data processing module and a time calibration port of an extension data processing module, the host data processing module outputs time reference pulses, and the extension data processing module receives the time reference pulses sent by a host and completes time calibration.
Further, the signal acquisition module adopts a high-precision current clamp J1, and the signal amplification module comprises an operational amplifier U1 connected to the output end of the high-precision current clamp J1, a resistor R1 connected between the inverting input end and the output end of the operational amplifier U1, an operational amplifier U2 connected to the output end of the operational amplifier U1 through a resistor R3, a resistor R1 and a filter capacitor C1 connected between the inverting input end and the output end of the operational amplifier U2 in parallel.
The utility model discloses a beneficial result as follows: the wireless remote sensing of the phase can be realized, a calibration line is connected between a time calibration port of a host data processing module and a time calibration port of an extension data processing module, and the host data processing module and the extension data processing module are detached after time synchronization; the main machine data processing module outputs time reference pulses, and the extension data processing module receives the time reference pulses sent by the main machine and completes time calibration to realize time synchronization of the main machine and the extension; the measuring accuracy is high, reduces personnel intensity of labour, improves work efficiency. The high-precision current clamp and digital filtering technology ensures the amplitude and phase measurement precision of low frequency and low current.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention;
Fig. 2 is a schematic circuit diagram of the signal acquisition module and the signal amplification module of the present invention.
Detailed Description
As shown in fig. 1, the wireless phase telemetering device comprises a host and an extension, wherein the host and the extension respectively comprise a signal acquisition module, a signal amplification module, an analog-to-digital conversion module, a data processing module and a wireless communication module, the host data processing module and the extension data processing module respectively adopt a single chip microcomputer (STM32F4 series) with a floating point calculation function, the host data processing module and the extension data processing module are respectively provided with a time calibration port, a calibration line is assembled between the time calibration port and the extension data processing module, the host data processing module outputs a time reference pulse, and the extension data processing module receives the time reference pulse sent by the host and completes time calibration to realize time synchronization of the host and the extension.
As shown in fig. 2, the signal acquisition module adopts a high-precision current clamp J1, the model is a Q8C clamp-type mutual inductor, the transformation ratio is 10A/5mA, and the measuring range is 10A; an operational amplifier U1 at the output end of the high-precision current clamp J1, a resistor R1 connected between the inverting input end and the output end of the operational amplifier U1, an operational amplifier U2 connected to the output end of the operational amplifier U1 through the resistor R3, a resistor R1 and a filter capacitor C1 which are connected between the inverting input end and the output end of the operational amplifier U2 in parallel; the high-precision current clamp and digital filtering technology ensures the amplitude and phase measurement precision of low frequency and low current.
The wireless communication module adopts a low-frequency 170MHz half-duplex communication mode, can easily pass through barriers such as a wall body and shielding, and realizes remote data transmission. During measurement, time calibration is firstly carried out, and then the calibration line is removed.
The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A wireless phase telemetry unit, comprising: the system comprises a host and an extension, wherein the host and the extension respectively comprise a signal acquisition module, a signal amplification module, an analog-to-digital conversion module, a data processing module and a wireless communication module; a calibration line is assembled between a time calibration port of a host data processing module and a time calibration port of an extension data processing module, the host data processing module outputs time reference pulses, and the extension data processing module completes time calibration by receiving the time reference pulses sent by a host.
2. the wireless phase telemetry device of claim 1, wherein: the signal acquisition module adopts a high-precision current clamp J1, and the signal amplification module comprises an operational amplifier U1 connected to the output end of the high-precision current clamp J1, a resistor R1 connected between the inverting input end and the output end of the operational amplifier U1, an operational amplifier U2 connected to the output end of the operational amplifier U1 through a resistor R3, a resistor R1 connected between the inverting input end and the output end of the operational amplifier U2 in parallel, and a filter capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056131.8U CN209784444U (en) | 2018-12-09 | 2018-12-09 | Wireless phase telemetering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056131.8U CN209784444U (en) | 2018-12-09 | 2018-12-09 | Wireless phase telemetering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784444U true CN209784444U (en) | 2019-12-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822056131.8U Active CN209784444U (en) | 2018-12-09 | 2018-12-09 | Wireless phase telemetering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784444U (en) |
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2018
- 2018-12-09 CN CN201822056131.8U patent/CN209784444U/en active Active
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