CN202189085U - Total voltage loss detection chip and electric energy meter - Google Patents
Total voltage loss detection chip and electric energy meter Download PDFInfo
- Publication number
- CN202189085U CN202189085U CN2011200630135U CN201120063013U CN202189085U CN 202189085 U CN202189085 U CN 202189085U CN 2011200630135 U CN2011200630135 U CN 2011200630135U CN 201120063013 U CN201120063013 U CN 201120063013U CN 202189085 U CN202189085 U CN 202189085U
- Authority
- CN
- China
- Prior art keywords
- module
- full decompression
- detection module
- effective value
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model is applicable to the field of electric power and provides a total voltage loss detection chip and an electric energy meter. The total voltage loss detection chip comprises a total voltage loss detection module, a total voltage loss effective value detection module, a measuring module and a working mode switching module for switching working modes of the total voltage loss detection module, the total voltage loss effective value detection module and the measuring module, wherein one end of the total voltage loss detection module is connected with ends of the total voltage loss effective value detection module and the measuring module, and then connected with a current channel, the other end of the total voltage loss detection module is connected with other ends of the total voltage loss effective value detection module and the measuring module, and then connected with one end of the working mode switching module, the other end of the working mode switching module is provided with a serial peripheral equipment interface, and the measuring module is also connected with a voltage channel. The technical scheme has the advantages of high level of integration, simple circuit, low cost and high reliability.
Description
Technical field
The utility model belongs to power domain, relates in particular to a kind of full decompression detection chip and electric energy meter.
Background technology
Full decompression is the critical voltage that three-phase voltage (single-phase table is a single-phase voltage) all is lower than electric energy meter, and load current is greater than the operating mode of 5% specified (basically) electric current, in the electrical network full decompression logout and entirely during decompression the calculating of ampere-hour value be in order rationally to remedy electric weight.Critical voltage (critical voltage) is meant that electric energy meter can start the minimum voltage of work.When each critical voltage that all is lower than electric energy meter mutually, electronic electric energy meter has lost mains supply, is supplied power by reserve battery.At this moment; Electric energy meter will be periodically (＜60S) detect the three-phase load electric current; And threshold current (5% specified (basically) electric current) compares, and whether is in full decompression state to judge electric energy meter, if be in full decompression state; Also to write down the current effective value in this moment, Here it is full decompression event recording function.The full decompression battery of electric energy meter adopts non-rechargeabel column lithium battery, and serviceable life, requirement was not less than 3 years, how low-power consumption, accurately realizes that the detection of full decompression operating mode and the measurement of ampere-hour value become a problem.
Present electric energy meter adopts peripheral amplifier and analog comparator to carry out full decompression operating mode to judge, when detecting full decompression operating mode and take place, opens the measurement that special-purpose computation chip is realized current effective value under the full decompression.The major defect of this kind scheme is: full decompression testing circuit is built with peripheral circuit, and integrated level is not high, complicated circuit, and cost is high, and reliability is not high.
The utility model content
The purpose of the utility model is to provide a kind of full decompression detection chip, and the computation chip integrated level that is intended to solve electric energy meter in the prior art is not high, complicated circuit, and cost is high, the problem that reliability is not high.
The utility model is achieved in that a kind of full decompression detection chip, and said chip comprises:
Full decompression detection module, full decompression effective value detection module, metering module and the mode of operation handover module that the mode of operation of full decompression detection module, full decompression effective value detection module and metering module is switched;
Wherein, be connected with current channel after an end of said full decompression detection module is connected with an end of said full decompression effective value detection module and said metering module;
The other end of said full decompression detection module is connected the back and is connected with an end of said mode of operation handover module with an end of said full decompression effective value detection module and said metering module; The other end of said mode of operation handover module is a Serial Peripheral Interface;
Said metering module also is connected with voltage channel.
Optional, said full decompression detection module comprises:
Amplifier, analog comparator, gear setting, counter, timer, comparer and count threshold;
Wherein, said amplifier input terminal is connected with current channel, and the other end of said amplifier is connected with an end of said analog comparator,
The other end of said analog comparator is connected with an end of said counter, and said analog comparator also is connected with said gear setting;
The other end of said counter is connected with an input end of said comparer; Said counter also is connected with the output terminal of said timer;
Another input end of said comparer is connected with said count threshold; The output terminal of said comparer is connected with said mode of operation handover module.
Optional, said full decompression effective value detection module comprises: analog to digital converter, high-pass filtering, absolute value and LPF;
The input end of wherein said analog to digital converter is connected with current channel, and the other end of said analog to digital converter is connected with an end of said high-pass filtering;
The other end of said high-pass filtering is connected with an end of said absolute value, and the other end of said absolute value is connected with an end of said LPF, and the other end of said LPF is connected with said mode of operation handover module.
The utility model also provides a kind of electric energy meter, and said electric energy meter comprises: above-mentioned full decompression detection chip; Said electric energy meter also comprises:
MCU, real-time clock, battery and power supply handover module, power down and last power detection circuit, data storage cell, current transformer sample circuit, voltage channel sample circuit;
Wherein, said real-time clock, said battery and power supply handover module, said power down and last power detection circuit, said data storage cell and said full decompression detection chip all are connected with said MCU; Said battery and power supply handover module also are connected with said full decompression detection chip; Said full decompression detection chip also is connected with said voltage channel sample circuit with said current transformer sample circuit.
The utility model compared with prior art, beneficial effect is: because the testing circuit of the utility model all is integrated in the full decompression detection chip, so it has the integrated level height, circuit is simple, and cost is low, the advantage that reliability is high.
Description of drawings
The structural drawing of the full decompression detection chip that Fig. 1 provides for the utility model;
The structural drawing of the full decompression detection module that Fig. 2 provides for the utility model;
The structural drawing of the full decompression effective value detection module that Fig. 3 provides for the utility model;
The electric energy meter structural drawing that Fig. 4 provides for the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model provides a kind of full decompression detection chip, and this full decompression detection chip is as shown in Figure 1, comprising:
Full decompression detection module 11, full decompression effective value detection module 12, metering module 13 and the mode of operation handover module 14 that the mode of operation of full decompression detection module 11, full decompression effective value detection module 12 and metering module 13 is switched;
Wherein, an end of full decompression detection module 11 is connected with an end of full decompression effective value detection module 12 and metering module 13 and then is connected with current channel;
The other end of full decompression detection module 11 is connected the back with an end of full decompression effective value detection module 12 and metering module 13 and is connected with an end of mode of operation handover module 14; The other end of mode of operation handover module 14 be Serial Peripheral Interface (Serial Peripheral interface, SPI);
In addition, metering module 13 also is connected with voltage channel.
Need to prove that testing circuit all is integrated in the full decompression detection chip, so it has the integrated level height, circuit is simple, and cost is low, the advantage that reliability is high.
Need to prove that the hardware structure diagram of above-mentioned full decompression detection module 12 is as shown in Figure 2, comprising:
Wherein, the input end of amplifier 121 is connected with current channel, and the other end of amplifier 21 is connected with an end of analog comparator 122,
The other end of analog comparator 122 is connected with an end of counter 124, and analog comparator 122 also is provided with 123 with gear and is connected;
The other end of counter 124 is connected with an input end of comparer 126; Counter 124 also is connected with the output terminal of timer 125;
Another input end of comparer 126 is connected with count threshold 127; The output terminal of comparer is connected with mode of operation handover module 14.
Need to prove that the hardware structure diagram of above-mentioned full decompression effective value detection module 12 is as shown in Figure 3, comprising: analog to digital converter ADC121, high-pass filtering HPF122, absolute value 123 and LPF LPF124;
Wherein the input end of ADC121 is connected with current channel, and the other end of ADC121 is connected with the end of HPF122;
The other end of HPF122 is connected with an end of absolute value 123, and the other end of absolute value 123 is connected with the end of LPF124, and the other end of LPF124 is connected with mode of operation handover module 14.
The effect of the utility model is described through the principle of work of the utility model below, and the full decompression detection chip that the utility model provides has four kinds of mode of operations: quantitative model (pattern 1), full decompression detect low-power consumption mode (pattern 2), full decompression effective value is measured low-power consumption mode (mode 3) and sleep pattern (pattern 4).Under quantitative model, mainly be metering module work, chip power-consumption is in 6mA; Under the full decompression detecting pattern, only full decompression detection module and the work of mode of operation switching controls module, chip power-consumption is about 150uA; Under the full decompression effective value measurement pattern, only full decompression effective value measurement module and the work of mode of operation switching controls module, power consumption is about 2mA; Under the sleep pattern, except that the mode switch control module, other modules are not all worked, and power consumption is at several microamperes.
The SPI that passes through of mode of operation handover module be connected with the microprocessor MCU of electric energy meter; MCU can send out command word corresponding to mode of operation switching controls module; After mode of operation switching controls module is received correct command word, carry out command analysis, produce the mode of operation change action.When the electrical network normal power supply, chip is in quantitative model; When MCU detects electric network power-fail, say the word to make chip switch to sleep pattern, MCU also gets into sleep pattern afterwards, reserve battery power supply this moment; Afterwards, RTC periodically timing wake-up MCU (＜60S), after MCU wakes up; Say the word and make chip switch to full decompression detecting pattern; Full decompression detection module work, whether detection system is in full decompression state, if be not in full decompression state; MCU says the word and makes chip switch to sleep pattern, and MCU also gets into sleep pattern afterwards; If be in full decompression state; MCU record should be constantly, and say the word and make chip switch to full decompression current effective value measurement pattern, full decompression current effective value measurement module work; MCU read effective value and deposits data storage cell in after measurement was accomplished; MCU says the word and makes chip switch to sleep pattern afterwards, and MCU also gets into sleep pattern afterwards, and so circulation endlessly.Detect electrical network up to MCU and power on, system recovery arrives by mains supply.Because the testing circuit of the utility model all is integrated in the full decompression detection chip, so it has the integrated level height, circuit is simple, and cost is low, the advantage that reliability is high.
The utility model also provides a kind of electric energy meter; This electric energy meter is as shown in Figure 4, comprising: MCU41, real-time clock 42, battery and power supply handover module 43, power down and last power detection circuit 44, data storage cell 45, full decompression detection chip 46, current transformer sample circuit 47, voltage channel sample circuit 48;
Wherein the concrete structure of full decompression detection chip 46 offers some clarification at the foregoing description, repeats no more here.
Wherein, real-time clock 42, battery and power supply handover module 43, power down all are connected with MCU41 with full decompression detection chip 46 with last power detection circuit 44, data storage cell 45; Battery and power supply handover module 43 also are connected with full decompression detection chip 46; Full decompression detection chip 46 also is connected with voltage channel sample circuit 48 with current transformer sample circuit 47.
Because the electric energy meter that the utility model provides is owing to be integrated in testing circuit in the full decompression detection chip, so it has the integrated level height, circuit is simple, and cost is low, the advantage that reliability is high.
The technical scheme that the utility model provides has the integrated level height, and circuit is simple, and cost is low, the advantage that reliability is high.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (4)
1. full decompression detection chip is characterized in that said chip comprises:
Full decompression detection module, full decompression effective value detection module, metering module and the mode of operation handover module that the mode of operation of full decompression detection module, full decompression effective value detection module and metering module is switched;
Wherein, be connected with current channel after an end of said full decompression detection module is connected with an end of said full decompression effective value detection module and said metering module;
The other end of said full decompression detection module is connected the back and is connected with an end of said mode of operation handover module with an end of said full decompression effective value detection module and said metering module; The other end of said mode of operation handover module is a Serial Peripheral Interface;
Said metering module also is connected with voltage channel.
2. chip according to claim 1 is characterized in that, said full decompression detection module comprises:
Amplifier, analog comparator, gear setting, counter, timer, comparer and count threshold;
Wherein, said amplifier input terminal is connected with current channel, and the other end of said amplifier is connected with an end of said analog comparator,
The other end of said analog comparator is connected with an end of said counter, and said analog comparator also is connected with said gear setting;
The other end of said counter is connected with an input end of said comparer; Said counter also is connected with the output terminal of said timer;
Another input end of said comparer is connected with said count threshold; The output terminal of said comparer is connected with said mode of operation handover module.
3. chip according to claim 1 is characterized in that, said full decompression effective value detection module comprises: analog to digital converter, high-pass filtering, absolute value and LPF;
The input end of wherein said analog to digital converter is connected with current channel, and the other end of said analog to digital converter is connected with an end of said high-pass filtering;
The other end of said high-pass filtering is connected with an end of said absolute value, and the other end of said absolute value is connected with an end of said LPF, and the other end of said LPF is connected with said mode of operation handover module.
4. an electric energy meter is characterized in that, said electric energy meter comprises: like the arbitrary described full decompression detection chip of claim 1-3; Said electric energy meter also comprises:
MCU, real-time clock, battery and power supply handover module, power down and last power detection circuit, data storage cell, current transformer sample circuit, voltage channel sample circuit;
Wherein, said real-time clock, said battery and power supply handover module, said power down and last power detection circuit, said data storage cell and said full decompression detection chip all are connected with said MCU; Said battery and power supply handover module also are connected with said full decompression detection chip; Said full decompression detection chip also is connected with said voltage channel sample circuit with said current transformer sample circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200630135U CN202189085U (en) | 2011-03-11 | 2011-03-11 | Total voltage loss detection chip and electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200630135U CN202189085U (en) | 2011-03-11 | 2011-03-11 | Total voltage loss detection chip and electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202189085U true CN202189085U (en) | 2012-04-11 |
Family
ID=45920526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200630135U Expired - Lifetime CN202189085U (en) | 2011-03-11 | 2011-03-11 | Total voltage loss detection chip and electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202189085U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884903A (en) * | 2014-02-28 | 2014-06-25 | 惠州中城电子科技有限公司 | Three-phase electronic type multi-functional total voltage loss detection system |
| CN103983836A (en) * | 2014-04-29 | 2014-08-13 | 宁波三星电气股份有限公司 | Electric energy meter full voltage loss detection method |
| CN104914303A (en) * | 2014-03-14 | 2015-09-16 | 钜泉光电科技(上海)股份有限公司 | Electric energy metering method |
| CN106093560A (en) * | 2016-06-22 | 2016-11-09 | 华立科技股份有限公司 | The full decompression detection control method of extremely low power dissipation under ammeter power-down state |
| CN106093561A (en) * | 2016-06-22 | 2016-11-09 | 华立科技股份有限公司 | The power consumption control method of ammeter power down full decompression logout |
| CN106124853A (en) * | 2016-06-22 | 2016-11-16 | 华立科技股份有限公司 | Power down ammeter low-power consumption full decompression detection control method |
| CN106199098A (en) * | 2016-06-22 | 2016-12-07 | 华立科技股份有限公司 | Under ammeter power-down state, low-power consumption during electrical network full decompression exception detects control method |
| CN108089142A (en) * | 2017-12-29 | 2018-05-29 | 深圳市锐能微科技有限公司 | Detection circuit, method and the electric energy computation chip of bleeder circuit parameter |
| CN108931756A (en) * | 2018-06-12 | 2018-12-04 | 宁波三星智能电气有限公司 | A kind of electric energy meter power failure detection method |
| CN109212451A (en) * | 2018-09-26 | 2019-01-15 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on three-phase and four-line meter equipment |
| CN109375145A (en) * | 2018-09-26 | 2019-02-22 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on phase three-wire three meter equipment |
-
2011
- 2011-03-11 CN CN2011200630135U patent/CN202189085U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884903A (en) * | 2014-02-28 | 2014-06-25 | 惠州中城电子科技有限公司 | Three-phase electronic type multi-functional total voltage loss detection system |
| CN104914303A (en) * | 2014-03-14 | 2015-09-16 | 钜泉光电科技(上海)股份有限公司 | Electric energy metering method |
| CN103983836A (en) * | 2014-04-29 | 2014-08-13 | 宁波三星电气股份有限公司 | Electric energy meter full voltage loss detection method |
| CN106093560B (en) * | 2016-06-22 | 2018-07-20 | 华立科技股份有限公司 | The full decompression of extremely low power dissipation detects control method under ammeter power-down state |
| CN106124853B (en) * | 2016-06-22 | 2019-01-22 | 华立科技股份有限公司 | The full decompression of power down ammeter low-power consumption detects power consumption control method |
| CN106124853A (en) * | 2016-06-22 | 2016-11-16 | 华立科技股份有限公司 | Power down ammeter low-power consumption full decompression detection control method |
| CN106199098A (en) * | 2016-06-22 | 2016-12-07 | 华立科技股份有限公司 | Under ammeter power-down state, low-power consumption during electrical network full decompression exception detects control method |
| CN106093561A (en) * | 2016-06-22 | 2016-11-09 | 华立科技股份有限公司 | The power consumption control method of ammeter power down full decompression logout |
| CN106093560A (en) * | 2016-06-22 | 2016-11-09 | 华立科技股份有限公司 | The full decompression detection control method of extremely low power dissipation under ammeter power-down state |
| CN106093561B (en) * | 2016-06-22 | 2018-07-20 | 华立科技股份有限公司 | The power consumption control method of the full decompression logout of ammeter power down |
| CN106199098B (en) * | 2016-06-22 | 2019-01-22 | 华立科技股份有限公司 | Low-power consumption under ammeter power-down state when the full decompression exception of power grid detects control method |
| CN108089142A (en) * | 2017-12-29 | 2018-05-29 | 深圳市锐能微科技有限公司 | Detection circuit, method and the electric energy computation chip of bleeder circuit parameter |
| CN108089142B (en) * | 2017-12-29 | 2024-02-09 | 深圳市锐能微科技有限公司 | Detection circuit and method for voltage dividing circuit parameters and electric energy metering chip |
| CN108931756A (en) * | 2018-06-12 | 2018-12-04 | 宁波三星智能电气有限公司 | A kind of electric energy meter power failure detection method |
| CN109212451A (en) * | 2018-09-26 | 2019-01-15 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on three-phase and four-line meter equipment |
| CN109375145A (en) * | 2018-09-26 | 2019-02-22 | 深圳供电局有限公司 | No-voltage fault monitoring method and device based on phase three-wire three meter equipment |
| CN109212451B (en) * | 2018-09-26 | 2021-06-25 | 深圳供电局有限公司 | Voltage loss fault monitoring method and device based on three-phase four-wire meter measuring equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202189085U (en) | Total voltage loss detection chip and electric energy meter | |
| CN206070005U (en) | A kind of device for monitoring AC influence in cathodic protection test pile | |
| CN101387663B (en) | Ultra low power consumption full-decompression measuring set and measurement method | |
| CN100582806C (en) | Low power consumption electric source monitoring circuit | |
| CN101593989A (en) | A kind of intelligent type accumulator testing charger and control method thereof | |
| CN106848454A (en) | A kind of management method of same mouth double cell | |
| CN104539005A (en) | Mobile terminal charging control system and method | |
| CN106199098B (en) | Low-power consumption under ammeter power-down state when the full decompression exception of power grid detects control method | |
| CN111638399B (en) | Electric energy meter metering method without PT | |
| CN105896689B (en) | A kind of battery auto-charging and-discharging device and its method | |
| CN115436871A (en) | Method for preventing zero line missing electricity stealing of single-phase electric energy meter based on low power consumption | |
| CN206470376U (en) | Batteries charge-discharge test instrument | |
| CN106093561A (en) | The power consumption control method of ammeter power down full decompression logout | |
| CN106093560B (en) | The full decompression of extremely low power dissipation detects control method under ammeter power-down state | |
| CN210957918U (en) | Intelligent constant display power monitoring device | |
| CN201522536U (en) | Full decompression module for three-phase electronic electric energy meter | |
| CN201674277U (en) | Power management power supply module for electronic electric energy meter | |
| CN111308192A (en) | Zero line-falling electricity-stealing-prevention metering device based on reset-prevention device | |
| CN106124853B (en) | The full decompression of power down ammeter low-power consumption detects power consumption control method | |
| CN201975855U (en) | Ammeter and power supply management circuit thereof | |
| CN201181316Y (en) | Ultra-low power consumption full-decompression measuring apparatus | |
| CN202854214U (en) | Full-voltage loss measuring device and intelligent electric meter | |
| CN101957401A (en) | Power-distribution electric energy comprehensive measuring apparatus and measuring method thereof | |
| CN211979044U (en) | Zero line-falling electricity-stealing-prevention metering device based on reset-prevention device | |
| CN202471837U (en) | A battery internal resistance measuring circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN RUINENG MICRO-TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN RENERGY TECHNOLOGY CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 97 Huaying building room A201 Patentee after: Shenzhen ruineg micro Polytron Technologies Inc Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 97 Huaying building room A201 Patentee before: Shenzhen Renergy Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 518000 Shenzhen, Guangdong, Nanshan District Haitian Road, No. 13 Shenzhen software industry base 5B-401 Patentee after: Shenzhen Renergy Technology Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road No. 97 Huaying building room A201 Patentee before: Shenzhen ruineg micro Polytron Technologies Inc |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |
|
| CX01 | Expiry of patent term |