CN202720263U - Industrial voltage measurement structure - Google Patents
Industrial voltage measurement structure Download PDFInfo
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- CN202720263U CN202720263U CN 201220367950 CN201220367950U CN202720263U CN 202720263 U CN202720263 U CN 202720263U CN 201220367950 CN201220367950 CN 201220367950 CN 201220367950 U CN201220367950 U CN 201220367950U CN 202720263 U CN202720263 U CN 202720263U
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- voltage
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- microprocessor
- voltage transformer
- host computer
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Abstract
Disclosed in the utility model is an industrial voltage measurement structure that comprises two to-be-measured voltage wiring terminals, a 200-kilo ohm precision metal film resistor, a voltage transformer, a sampling resistor, a signal amplifier, a microprocessor, and a digital display tube. One to-be-measured voltage wiring terminal is connected with one input terminal of the voltage transformer by a circuit and the other to-be-measured voltage wiring terminal is successively connected with the 200-kilo ohm precision metal film resistor and the other input terminal of the voltage transformer by circuits; one output terminal of the voltage transformer is grounded by a circuit and the other output terminal of the voltage transformer is successively connected with the signal amplifier, the microprocessor, and the digital display tube by a circuit; one end of the sampling resistor is grounded by a circuit and the other end thereof is connected with a circuit between the signal amplifier and the voltage transformer by a circuit. According to the utility model, the industrial voltage measurement structure has high measurement precision, wherein the accuracy grade can reach 0.1.
Description
Technical field
The utility model belongs to the Power Electronic Technique detection field, specifically, relates to a kind of industrial voltage determination structure.
Background technology
Voltage table is a kind of instrument of measuring voltage, common voltage table-voltage meter symbol: V, in the sensitive galvanometer the inside permanent magnet is arranged, coil that is consisted of by wire of series connection between galvanometric two binding posts, coil is placed in the magnetic field of permanent magnet, and links to each other with the pointer of table by gearing.Most of voltage table all is divided into two ranges, and (0-3V) (0-15V), this voltage table is only applicable to the mensuration that small voltage and light current are pressed.
Existing A.C. voltmeter mainly adopt rectifier type ammeter, electromagnetic system ammeter, electronic be that ammeter and static are the measuring mechanism of ammeter.Destaticing is outside the voltage table, and other are that voltage table all is to be in series with small range ammeter and voltage divider.Also the voltage divider of available several resistance compositions is connected with measuring mechanism and is formed multivoltmeter.These A.C. voltmeters that are are difficult to make lower range, and minimum range is between several volts are to tens volts, and maximum amount Cheng Ze is about 1～2 kilovolt.Static is that the minimum range of voltage table is about 30 volts, and that maximum amount Cheng Ze can reach is very high.The high-tension voltmeter of using in the electric system is to be 100 volts electromagnetic system voltage table by the voltagerating range, forms in conjunction with the voltage transformer (VT) of appropriate voltage no-load voltage ratio.Owing to being subjected to the restriction of measuring mechanism coil inductance, the electromagnetic system voltage table, electronic be that the frequency of utilization scope of voltage table is narrower, upper limiting frequency is lower than 1～2 kilo hertz.Electronic system slightly is better than electromagnetic system.Static system and thermoelectricity are that the frequency of utilization scope of voltage table is all wider.Approximately several kilo hertzs of the upper limit frequencies of utilization of rectifier type voltage table, but only be noted that when alternating voltage was sinusoidal waveform, rectifier type ammeter reading was only correct.
In the Chinese industrial electricity consumption, single-phase is 220V, and three-phase is 380V, and frequency is 50 hertz.Its measurement result precision was not high when above-mentioned A.C. voltmeter was used for industrial voltage determination.
The utility model content
Technical problem to be solved in the utility model provides the higher industrial voltage determination structure of a kind of measurement result precision.
The utility model solves the problems of the technologies described above the technical scheme that adopts: industrial voltage determination structure, comprise two voltage wiring terminals to be measured, 200K Europe precision metallic film resistance, voltage transformer (VT), sample resistance, signal amplifier, microprocessor, digital display tube, one of them voltage wiring terminal to be measured is connected by an input end of circuit and voltage transformer (VT), another voltage wiring terminal to be measured is connected with another input end of 200K Europe precision metallic film resistance and voltage transformer (VT) successively by circuit, an output terminal of voltage transformer (VT) is by line-to-ground, another output terminal of voltage transformer (VT) by circuit successively with signal amplifier, microprocessor, digital display tube is connected, described sample resistance one end is by line-to-ground, and the other end is connected by the circuit between circuit and signal amplifier and the voltage transformer (VT).
Further, also comprise warning device, described warning device and microprocessor are connected by circuit.This warning device can be by inputting alarm voltage at microprocessor, surpasses the setting voltage upper limit or measure voltage when being lower than setting voltage when measuring voltage, reports to the police by warning device.Avoid the overvoltage of commercial unit or the operation under the low pressure, cause the damage of commercial unit.
Also comprise host computer, described host computer and microprocessor are connected by circuit.Can store and process the magnitude of voltage that is measured to by host computer like this, and mensuration curve that can the formation voltage value, so that understand the variation of voltage in the equipment course of work.Perhaps because the change in voltage that other reasons causes.
Described host computer is computing machine or PLC.
Described microprocessor and host computer are equipped with wireless transport module, and microprocessor and host computer carry out data transmission by wireless transport module.
Compared with prior art, the utlity model has following advantage and beneficial effect: industrial voltage determination structure determination precision of the present utility model is higher, and accuracy class can reach 0.1 grade.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Parts title corresponding to attached number in the figure is: 1-200K Europe precision metallic film resistance; 2-voltage wiring terminal to be measured; The 3-voltage transformer (VT); The 4-sample resistance; The 5-signal amplifier; The 6-microprocessor; The 7-host computer; The 8-wireless transport module; The 9-warning device; The 10-digital display tube.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1:
As shown in Figure 1, the present embodiment industry voltage determination structure comprises two voltage wiring terminals 2 to be measured, 200K Europe precision metallic film resistance 1, voltage transformer (VT) 3, sample resistance 4, signal amplifier 5, microprocessor 6, host computer 7(computing machine or PLC), warning device 9, digital display tube 10, one of them voltage wiring terminal 2 to be measured is connected by an input end of circuit and voltage transformer (VT) 3, another voltage wiring terminal 2 to be measured is connected with another input end of 200K Europe precision metallic film resistance 1 and voltage transformer (VT) 3 successively by circuit, an output terminal of voltage transformer (VT) 3 is by line-to-ground, another output terminal of voltage transformer (VT) 3 by circuit successively with signal amplifier 5, microprocessor 6, digital display tube 10 is connected, described sample resistance 4(250 Europe precision metallic film resistance) end is by line-to-ground, and the other end is connected by the circuit between circuit and signal amplifier 5 and the voltage transformer (VT) 3; Warning device 9, host computer 7(computing machine or PLC) connect by circuit with microprocessor 6 respectively.
Embodiment 2:
As shown in Figure 1, the present embodiment industry voltage determination structure comprises two voltage wiring terminals 2 to be measured, 200K Europe precision metallic film resistance 1, voltage transformer (VT) 3, sample resistance 4, signal amplifier 5, microprocessor 6, host computer 7(computing machine or PLC), warning device 9, digital display tube 10, one of them voltage wiring terminal 2 to be measured is connected by an input end of circuit and voltage transformer (VT) 3, another voltage wiring terminal 2 to be measured is connected with another input end of 200K Europe precision metallic film resistance 1 and voltage transformer (VT) 3 successively by circuit, an output terminal of voltage transformer (VT) 3 is by line-to-ground, another output terminal of voltage transformer (VT) 3 by circuit successively with signal amplifier 5, microprocessor 6, digital display tube 10 is connected, described sample resistance 4 one ends are by line-to-ground, and the other end is connected by the circuit between circuit and signal amplifier 5 and the voltage transformer (VT) 3; Warning device 9 is connected by circuit with microprocessor 6.Host computer 7(computing machine or PLC) and microprocessor 6 be equipped with wireless transport module 8, microprocessor 6 carries out data transmission with host computer 7 by wireless transport module 8.
Embodiment 3:
As shown in Figure 1, the present embodiment industry voltage determination structure comprises two voltage wiring terminals 2 to be measured, 200K Europe precision metallic film resistance 1, voltage transformer (VT) 3, sample resistance 4, signal amplifier 5, microprocessor 6, host computer 7(computing machine or PLC), warning device 9, digital display tube 10, one of them voltage wiring terminal 2 to be measured is connected by an input end of circuit and voltage transformer (VT) 3, another voltage wiring terminal 2 to be measured is connected with another input end of 200K Europe precision metallic film resistance 1 and voltage transformer (VT) 3 successively by circuit, an output terminal of voltage transformer (VT) 3 is by line-to-ground, another output terminal of voltage transformer (VT) 3 by circuit successively with signal amplifier 5, microprocessor 6, digital display tube 10 is connected, described sample resistance 4 one ends are by line-to-ground, and the other end is connected by the circuit between circuit and signal amplifier 5 and the voltage transformer (VT) 3; Warning device 9 is connected by circuit with microprocessor 6.Host computer 7(computing machine or PLC) and microprocessor 6 be equipped with wireless transport module 8, microprocessor 6 carries out data transmission with host computer 7 by wireless transport module 8; And host computer 7(computing machine or PLC) and microprocessor 6 be equipped with wireless transport module 8, microprocessor 6 carries out data transmission with host computer 7 by wireless transport module 8.
In above-described embodiment, embodiment 1 adopts the wire transmission mode the transmission of data, and embodiment 2 adopts the mode the transmission of data of wirelessly transmitting data, and embodiment 3 adopts the mode the transmission of data of wire/wireless combination.Adopt the industrial voltage determination structure of embodiment 1-3 respectively the industrial electro of 220V to be compressed into the row detection.5 measurement results of embodiment 1 are respectively 219.86V, 220.03V, 220.52V, 220.35V, 220.19V; 5 measurement results of embodiment 2 are respectively 219.73V, 219.68V, 219.92V, 220.12V, 219.39V; 5 measurement results of embodiment 3 are respectively 220.16V, 220.08V, 220.32V, 220.15V, 220.16V; Its accuracy class can reach 0.1 grade.
Adopt the industrial voltage determination structure of embodiment 1-3 respectively the industrial electro of 380V to be compressed into the row detection.5 measurement results of embodiment 1 are respectively 381.06V, 381.31V, 380.89V, 380.35V, 379.90V; 5 measurement results of embodiment 2 are respectively 381.41V, 381.20V, 380.76V, 380.94V, 380.39V; 5 measurement results of embodiment 3 are respectively 380.48V, 380.63V, 379.82V, 381.06V, 380.37V.Its accuracy class can reach 0.1 grade.
The ammeter measurement has certain accuracy class, and 0.1 grade, 0.2 grade, 0.5 grade, 1 grade, 1.5 grades, 2.5 grades, 5 grades, totally 7 grades.0.1 class precision is the highest, 5 class precisions are minimum.For example 5 grades is exactly 5 volts of 100 volts of errors.
As mentioned above, just can realize preferably the utility model.
Claims (5)
1. industrial voltage determination structure, it is characterized in that: comprise two voltage wiring terminals to be measured (2), 200K Europe precision metallic film resistance (1), voltage transformer (VT) (3), sample resistance (4), signal amplifier (5), microprocessor (6), digital display tube (10), one of them voltage wiring terminal to be measured (2) is connected by an input end of circuit and voltage transformer (VT) (3), another voltage wiring terminal to be measured (2) is connected with another input end of 200K Europe precision metallic film resistance (1) and voltage transformer (VT) (3) successively by circuit, an output terminal of voltage transformer (VT) (3) is by line-to-ground, another output terminal of voltage transformer (VT) (3) by circuit successively with signal amplifier (5), microprocessor (6), digital display tube (10) is connected, described sample resistance (4) one ends are by line-to-ground, and the other end is connected by the circuit between circuit and signal amplifier (5) and the voltage transformer (VT) (3).
2. industrial voltage determination structure according to claim 1 is characterized in that: also comprise warning device (9), described warning device (9) is connected by circuit with microprocessor (6).
3. industrial voltage determination structure according to claim 1 and 2 is characterized in that: also comprise host computer (7), described host computer (7) is connected by circuit with microprocessor (6).
4. industrial voltage determination structure according to claim 3, it is characterized in that: described host computer (7) is computing machine or PLC.
5. industrial voltage determination structure according to claim 3, it is characterized in that: described microprocessor (6) is equipped with wireless transport module (8) with host computer (7), and microprocessor (6) carries out data transmission with host computer (7) by wireless transport module (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367950 CN202720263U (en) | 2012-07-27 | 2012-07-27 | Industrial voltage measurement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367950 CN202720263U (en) | 2012-07-27 | 2012-07-27 | Industrial voltage measurement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202720263U true CN202720263U (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367950 Expired - Fee Related CN202720263U (en) | 2012-07-27 | 2012-07-27 | Industrial voltage measurement structure |
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| CN (1) | CN202720263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759651A (en) * | 2012-07-27 | 2012-10-31 | 成都生辉电子科技有限公司 | Industrial voltage measurement structure |
-
2012
- 2012-07-27 CN CN 201220367950 patent/CN202720263U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759651A (en) * | 2012-07-27 | 2012-10-31 | 成都生辉电子科技有限公司 | Industrial voltage measurement structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20130727 |