CN2695979Y - Three-pincers graphic phase voltammeter - Google Patents
Three-pincers graphic phase voltammeter Download PDFInfo
- Publication number
- CN2695979Y CN2695979Y CN 03272258 CN03272258U CN2695979Y CN 2695979 Y CN2695979 Y CN 2695979Y CN 03272258 CN03272258 CN 03272258 CN 03272258 U CN03272258 U CN 03272258U CN 2695979 Y CN2695979 Y CN 2695979Y
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- pincers
- current
- road
- data bus
- voltage
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Abstract
The utility model provides a three-pincers graphic phase voltammeter, which comprises the three current transformers in the shape of pincers and a host machine. The host machine is provided with a casing, a board arranged inside of the casing, and the circuit of three-pincers graphic phase voltammeter, a dot matrix liquid crystal display arranged on the panel of the casing, and a panel of wire connection. The utility model is characterized in that the panel of the wire connection is provided with the input interfaces Ia, Ib, Ic of three-way current pincers, the input channel interfaces Ua, Ub, Uc of three-way electric voltage, and an earth terminal; the outputs of the three-pincers graphic current transformers are inserted into the input interfaces Ia, Ib, Ic of the three-way current pincers of the host machine via cable joints; the three-way voltage signal is inserted into the input channel interface Ua, Ub, Uc of the three-way electric voltage of the host machine; circuit comprises the analogue-to-digital converter A/D1 of electric voltage, the analogue-to-digital A/D2 converter of current, a module data bus line, a microprocessor MCU, a liquid crystal data bus line, the dot matrix liquid crystal display, a Keyboard data bus line, and a keyboard processor. The utility model can measure and display all amplitude values of electric quantity measured and visually display a phasor chart between the electric quantity measured at the same time; the general false wiring of a three-phase three-wire system with 48 kinds can be detected.
Description
Technical field
The utility model belongs to a kind of electric instrument, especially energy measurement alternating voltage, alternating current, and the phase voltammetric meter at phasing degree.
Background technology
At present, known phase voltammetric meter is to be made up of the main frame that two current clamps and have the tested alternating voltage input of two-way and has charactron or a character formula LCD.This class phase voltammetric meter can be selected different measurement functions by the rotary switch that rotation is positioned on the main frame usually, with amplitude that realize to measure the tested alternating voltage of two-way respectively, the amplitude of the tested alternating current of two-way, and each measured between the function at phasing degree.
But there is following problem in this class phase voltammetric meter:
1. can not measure and show the amplitude of all tested electric weight simultaneously;
2. can not intuitively show the phasor graph between the tested electric weight;
3. can not check the three-phase three wire system false wiring;
4. have only the input of two-way voltage and electric current, measure the three-phase four wire system of three road voltage and currents, need change the test wiring during test for need.
Summary of the invention
The utility model is in order to overcome the problems referred to above that existing phase voltammetric meter exists, the amplitude that has the input of three road voltages and three road electric currents, can measure and show all tested electric weight simultaneously is provided, can intuitively shows the phasor graph between the tested electric weight, and can check three pincers figure phase voltammetric meters of 48 kinds of false wirings commonly used of three-phase three wire system.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: three pincers figure phase voltammetric meters comprise three clamp current transformers and a main frame; Main frame has the circuit board and the three pincers figure phase voltammetric meter circuit of dress in shell, the shell, the dot matrix lcd on the housing face-plate, and patch panel; It is characterized in that: have three road current clamp input interface Ia, Ib, Ic and three road voltage input channel interface Ua, Ub, Uc on the patch panel, and a ground terminal; The output of three split core type current transformers is plugged into main frame three road current clamp input interface Ia, Ib, Ic by cable splice; And get three road voltage signals and be plugged into main frame three road voltage input channel interface Ua, Ub, Uc by cable splice; LCD is used to show the amplitude of tested electric weight and the phasor graph between the tested electric weight.
The circuit of three pincers figure phase voltammetric meters: three road tested alternating currents and three road tested alternating voltages are by cable difference voltage input channel interface Ua, Ub, Uc and current clamp input interface Ia, Ib, Ic, and by lead connection voltage-mode number converter A/D1 and current-mode number converter A/D2, the voltage and current analog to digital converter inserts microprocessor MCU respectively by the modulus data bus, microprocessor links to each other with dot matrix lcd by the liquid crystal data bus, and microprocessor links to each other with keyboard processor by the keyboard data bus.
The principle of work of three pincers figure phase voltammetric meters: by being connected to the control line of analog to digital converter, the control analog to digital converter is sampled simultaneously to three road voltage and currents, and carries out analog to digital conversion by microprocessor.Then,, calculate the value of electric parameters such as voltage, electric current, phasing degree, power and power factor by the same group of sampled value of microprocessor according to gained, and to the judgement of correcting errors of three-phase three wire system wiring situation.At last, by microprocessor the various electric parameters that calculated being sent to the dot matrix lcd that is connected to microprocessor simultaneously shows.And the phasing degree between each voltage and current is also shown at dot matrix lcd by the form with phasor graph after the microprocessor processes.
The three pincers figure phase voltammetric meters that the utility model provides are compared with background technology, have the input of three road voltages and three road electric currents, the amplitude that can measure and show all tested electric weight simultaneously and the phasor graph between the tested electric weight, also can check 48 kinds of advantages such as false wiring commonly used of three-phase three wire system.
Description of drawings
Fig. 1 is three pincers figure phase voltammetric meter electrical schematic diagrams;
Fig. 2 is the main frame patch panel synoptic diagram of tested electric weight importation in the three pincers figure phase voltammetric meters;
Fig. 3 is the electric parameter displayed map that the main frame dot matrix lcd of three pincers figure phase voltammetric meters is measured;
Fig. 4 is the phasor displayed map that the main frame dot matrix lcd of three pincers figure phase voltammetric meters is measured.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Three pincers figure phase voltammetric meters comprise three clamp current transformers and a main frame.Main frame has the circuit board and the three pincers figure phase voltammetric meter circuit of dress in shell, the shell, the dot matrix lcd on the housing face-plate, and patch panel; Have three road current clamp input interface Ia, Ib, Ic and three road voltage input channel interface Ua, Ub, Uc and a ground terminal on the patch panel.Shown in Figure 2, be the main frame patch panel of tested electric weight importation in the three pincers figure phase voltammetric meters; The output of three split core type current transformers is plugged into main frame three road current clamp input interface Ia, Ib, Ic by cable splice; And get three road voltage signals and be plugged into main frame three road voltage input channel interface Ua, Ub, Uc by cable splice.Fig. 3 and shown in Figure 4, LCD can show the amplitude of tested electric weight and the phasor graph between the tested electric weight.
Shown in Figure 1, three pincers figure phase voltammetric meter electrical schematic diagrams, three road tested alternating currents and three road tested alternating voltages are by cable difference voltage input channel interface Ua, Ub, Uc and current clamp input interface Ia, Ib, Ic, and by lead connection voltage-mode number converter A/D1 and current-mode number converter A/D2, the voltage and current analog to digital converter inserts microprocessor MCU respectively by the modulus data bus, microprocessor links to each other with dot matrix lcd by the liquid crystal data bus, and microprocessor links to each other with keyboard special processor SX18 by the keyboard data bus.
When measuring three-phase alternating current electrical network or power supply, tested three-phase alternating voltage Ua, Ub, Uc and three-phase current is to insert voltage-mode number converter A/D1 and current-mode number converter A/D2 respectively by lead-in wire successively by three current clamp three-phase alternating current Ia, Ib, Ic earlier, and microprocessor MCU judges the keyboard commands of input from keyboard special processor SX18 by the keyboard data bus.And, control the chip selection cs end of voltage-mode number converter A/D1 and current-mode number converter A/D2 respectively by two control lines according to keyboard commands, carry out analog to digital conversion.Analog to digital conversion result sends into through the modulus data bus and carries out computing among the MCU, finishes the measurement of voltage, electric current, power and frequency and phasing degree equivalent, and to the judgement of correcting errors of three-phase three wire system wiring situation.Then, microprocessor MCU sends into dot matrix lcd with measured measurement result by the liquid crystal data bus and shows.
Wherein: keyboard special processor SX18 (manufacturing of U.S. UBICOM company), other parts all can adopt the custom circuit components and parts.
Claims (2)
1, a kind of three pincers figure phase voltammetric meters comprise three clamp current transformers and a main frame; Main frame has the circuit board and the three pincers figure phase voltammetric meter circuit of dress in shell, the shell, the dot matrix lcd on the housing face-plate, and patch panel; It is characterized in that: have three road current clamp input interface Ia, Ib, Ic and three road voltage input channel interface Ua, Ub, Uc on the patch panel, and a ground terminal; The output of three split core type current transformers is plugged into main frame three road current clamp input interface Ia, Ib, Ic by cable splice; And get three road voltage signals and be plugged into main frame three road voltage input channel interface Ua, Ub, Uc by cable splice; LCD is used to show the amplitude of tested electric weight and the phasor graph between the tested electric weight.
2, a kind of three pincers figure phase voltammetric meters according to claim 1, it is characterized in that: three pincers figure phase voltammetric meter circuit of described circuit board: three road tested alternating currents and three road tested alternating voltages are by cable difference voltage input channel interface Ua, Ub, Uc and current clamp input interface Ia, Ib, Ic, and by lead connection voltage-mode number converter A/D1 and current-mode number converter A/D2, the voltage and current analog to digital converter inserts microprocessor MCU respectively by the modulus data bus, microprocessor links to each other with dot matrix lcd by the liquid crystal data bus, and microprocessor links to each other with keyboard processor by the keyboard data bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03272258 CN2695979Y (en) | 2003-06-13 | 2003-06-13 | Three-pincers graphic phase voltammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03272258 CN2695979Y (en) | 2003-06-13 | 2003-06-13 | Three-pincers graphic phase voltammeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695979Y true CN2695979Y (en) | 2005-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03272258 Expired - Lifetime CN2695979Y (en) | 2003-06-13 | 2003-06-13 | Three-pincers graphic phase voltammeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695979Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118269B (en) * | 2006-08-01 | 2011-04-20 | 西安爱邦电气有限公司 | Wire connection analyser for electric power protective circuit |
| CN103018543A (en) * | 2012-12-18 | 2013-04-03 | 天津光电通信技术有限公司 | High-accuracy multichannel alternating voltage and current detection device |
| CN103675449A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Method for generating wiring phasor diagram by using inner data of intelligent ammeter |
| CN105548793A (en) * | 2015-12-31 | 2016-05-04 | 深圳市科陆电子科技股份有限公司 | Wiring identification method based load impedance feature |
| CN108072810A (en) * | 2016-11-18 | 2018-05-25 | 广东电网有限责任公司东莞供电局 | The Wiring detection method and system of measurent wiring training platform |
-
2003
- 2003-06-13 CN CN 03272258 patent/CN2695979Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118269B (en) * | 2006-08-01 | 2011-04-20 | 西安爱邦电气有限公司 | Wire connection analyser for electric power protective circuit |
| CN103018543A (en) * | 2012-12-18 | 2013-04-03 | 天津光电通信技术有限公司 | High-accuracy multichannel alternating voltage and current detection device |
| CN103675449A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Method for generating wiring phasor diagram by using inner data of intelligent ammeter |
| CN103675449B (en) * | 2013-12-02 | 2016-05-11 | 国家电网公司 | Utilize intelligent electric energy meter internal data to generate the method for wiring phasor diagram |
| CN105548793A (en) * | 2015-12-31 | 2016-05-04 | 深圳市科陆电子科技股份有限公司 | Wiring identification method based load impedance feature |
| CN108072810A (en) * | 2016-11-18 | 2018-05-25 | 广东电网有限责任公司东莞供电局 | The Wiring detection method and system of measurent wiring training platform |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130613 Granted publication date: 20050427 |
|
| DD01 | Delivery of document by public notice |
Addressee: Cao Rui Document name: Notification of Expiration of Patent Right Duration |