CN112730973A - Electric energy metering chip and electric energy metering device - Google Patents
Electric energy metering chip and electric energy metering device Download PDFInfo
- Publication number
- CN112730973A CN112730973A CN202011556821.5A CN202011556821A CN112730973A CN 112730973 A CN112730973 A CN 112730973A CN 202011556821 A CN202011556821 A CN 202011556821A CN 112730973 A CN112730973 A CN 112730973A
- Authority
- CN
- China
- Prior art keywords
- module
- power
- energy
- electric energy
- signal
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
Abstract
The invention discloses an electric energy metering chip and an electric energy metering device, wherein the electric energy metering chip comprises a signal sampling module, a channel configuration module, an energy module and a register; the channel configuration module is electrically connected with the signal sampling module and the energy module respectively; the register is respectively electrically connected with the channel configuration module and the energy module, and is used for storing a plurality of channel configuration instructions which are used for determining the matching relationship between the voltage signal and the current signal; the signal sampling module is used for collecting multiple paths of signals, and the multiple paths of signals comprise M paths of current signals and N paths of voltage signals; the channel configuration module is used for configuring the multi-channel signals into M groups of signal pairs which correspond to the M current signals one by one according to a channel configuration instruction, wherein each group of signal pairs comprises a voltage signal and a current signal; the energy module is used for carrying out energy calculation on the M groups of signal pairs to obtain M groups of energy values, so that the same electric energy metering chip can be suitable for different application occasions.
Description
Technical Field
The invention relates to the technical field of chips, in particular to an electric energy metering chip and an electric energy metering device.
Background
At present, there are various occasions in intelligence thing networking field and all need to adopt the chip that has the electric energy measurement function. But the electrical energy metering schemes required for different applications are generally different.
The existing chip with the electric energy metering function is generally designed for a certain specific application, and the same type of chip can only be applied to a specific application scene. If the electric energy metering is carried out in different application occasions, redesign of different types of chips is needed. If the existing chip with the electric energy metering function is adopted, the manufacturing cost of the related integrated system in the field of the intelligent Internet of things is high, meanwhile, the electric energy metering chip can only be used in a single specific occasion of equipment, and the problem that the electric energy metering is carried out by adopting the same type of chip in different application occasions cannot be solved.
Disclosure of Invention
The invention aims to overcome the defect that an electric energy metering chip in the prior art can only be suitable for a single specific occasion but can not be suitable for different application occasions, and provides an electric energy metering chip and an electric energy metering device.
The invention solves the technical problems through the following technical scheme:
the invention provides an electric energy metering chip, which comprises a signal sampling module, a channel configuration module, an energy module and a register, wherein the signal sampling module is used for sampling a signal;
the channel configuration module is electrically connected with the signal sampling module and the energy module respectively;
the register is respectively electrically connected with the channel configuration module and the energy module, and is used for storing a plurality of channel configuration instructions which are used for determining the matching relationship between the voltage signal and the current signal;
the signal sampling module is used for collecting multiple paths of signals, and the multiple paths of signals comprise M paths of current signals and N paths of voltage signals;
the channel configuration module is used for configuring the multi-channel signals into M groups of signal pairs corresponding to the M current signals one by one according to the channel configuration instruction, wherein each group of signal pairs comprises a voltage signal and a current signal;
the energy module is used for carrying out energy calculation on the M groups of signal pairs to obtain M groups of energy values;
wherein M is a positive integer greater than 1, N is a positive integer, and M is greater than or equal to N.
Preferably, when N is 1, the M current path signals are all matched with the same voltage signal.
Preferably, when M is equal to N, the M current signals are matched with the N voltage signals one by one.
Preferably, when M is 2N, each of the N voltage signals is respectively matched with two of the M current signals.
Preferably, the electric energy metering chip further comprises a waveform selection module;
one end of the waveform selection module is electrically connected with the signal sampling module, and the other end of the waveform selection module is electrically connected with the channel configuration module;
the register is also electrically connected with the waveform selection module and is also used for storing a plurality of waveform selection instructions, and the waveform selection instructions are used for determining the output waveform of the waveform selection module;
and the waveform selection module is used for processing the signal input by the signal sampling module according to the waveform selection instruction.
Preferably, the electric energy metering chip further comprises an effective value module;
the effective value module is electrically connected with the waveform selection module;
the register is also electrically connected with the effective value module and is also used for storing a plurality of effective value selection instructions, and the effective value selection instructions are used for determining the type of the effective value output by the effective value module;
the effective value module is used for calculating the effective value of the output waveform of the waveform selection module according to the effective value selection instruction.
Preferably, the electric energy metering chip further comprises a power module;
one end of the power module is electrically connected with the channel configuration module, and the other end of the power module is electrically connected with the energy module;
the register is also electrically connected with the power module and is used for storing a plurality of power selection instructions, and the power selection instructions are used for determining the type of power output by the power module;
and the power module is used for carrying out power calculation on the M groups of signal pairs according to the power selection instruction so as to obtain M groups of power values.
Preferably, the power module is further configured to calculate a total power value according to the M groups of power values;
and/or the energy module and/or the power module support a multiplexing algorithm.
Preferably, the register is further configured to store a number of energy selection instructions, where the energy selection instructions are used to determine an energy type output by the energy module;
the energy module is specifically configured to perform energy calculation on the M groups of signal pairs according to the energy selection instruction to obtain M groups of energy values.
The invention also provides an electric energy metering device which comprises the electric energy metering chip.
The positive progress effects of the invention are as follows: the invention provides an electric energy metering chip and an electric energy metering device, wherein the electric energy metering chip is provided with a signal sampling module, a channel configuration module, an energy module and a register, wherein a plurality of channel configuration instructions are prestored in the register to determine the matching relation between acquired voltage signals and current signals, the channel configuration module configures a plurality of paths of signals into a plurality of groups of signal pairs according to the channel configuration instructions taken out from the register, and the energy module performs energy calculation on the plurality of groups of signal pairs to obtain a plurality of groups of energy values, so that the same electric energy metering chip can be suitable for different application occasions by different selections of the channel configuration instructions, the multipurpose flexible configuration of the electric energy metering chip can be realized, different electric energy metering schemes can be configured according to different application requirements, and the manufacturing cost of the electric energy metering device is further reduced.
Drawings
Fig. 1 is a schematic block diagram of an electric energy metering chip according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a first signal configuration of the electric energy metering chip according to embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a second signal configuration of the electric energy metering chip according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of a third signal configuration of the electric energy metering chip according to embodiment 1 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment discloses an electric energy metering chip, where the electric energy metering chip 1 includes a signal sampling module 11, a channel configuration module 12, an energy module 13, and a register 14.
The channel configuration module 12 is electrically connected with the signal sampling module 11 and the energy module 13 respectively; the register 14 is electrically connected to the channel configuration module 12 and the energy module 13, respectively, and the register 14 is configured to store a plurality of channel configuration instructions, and the channel configuration instructions are used to determine a matching relationship between the voltage signal and the current signal. When the electric energy metering chip is applied to different scenes, a user can call channel configuration instructions corresponding to different scenes from the register 14 according to different scenes of actual application to complete electric energy metering in different scenes.
In this embodiment, the number of the signal sampling modules 11 is multiple, and the multiple signals include M current signals and N voltage signals, where M is a positive integer greater than 1, N is a positive integer, and M is greater than or equal to N.
In this embodiment, the same mode may be selected for this multi-channel structure, or the mode may be set individually for each channel, and further, the non-selected channels may be turned off to reduce power consumption. In this embodiment, in order to ensure the sampling of the current signal and the voltage signal from time to time, one current signal and one voltage signal preferably correspond to one signal sampling module, respectively. Specifically, the signal sampling module 11 can sample the current signal of the current channel and convert the analog signal into a digital signal to obtain a sampled current value, and can also sample the voltage signal of the voltage channel and convert the analog signal into a digital signal to obtain a sampled voltage value. Further, the signal sampling module 11 in this embodiment is preferably capable of performing slave processing such as down-sampling on the sampled signal.
The channel configuration module 12 is configured to configure the multiple signals into M groups of signal pairs corresponding to the M current signals one to one according to a channel configuration instruction, where each group of signal pairs includes a voltage signal and a current signal; the energy module 13 is configured to perform energy calculation on the M groups of signal pairs to obtain M groups of energy values.
According to different applicable scenes of the electric energy metering chip, channel configuration instructions corresponding to the applicable different scenes one to one are stored in the register, and correspondingly, the channel configuration module 12 can configure the multi-channel signals collected by the signal sampling module 11 according to the specific applicable scenes.
In an alternative embodiment, as shown in fig. 2, when N is equal to 1, the M current path signals are all matched with the same voltage signal. For example, be applied to the electric energy measurement to filling electric pile with this electric energy measurement chip, specifically, be equipped with M in a certain parking area and fill electric pile and be used for charging new energy automobile, every working voltage that fills electric pile is the single-phase 220V's of the same way voltage, every working current that fills electric pile then is different because of charging different motorcycle types, if fill electric pile to M and carry out the electric energy measurement, then the passageway configuration module of this electric energy measurement chip need all match M way working current signal that electric pile corresponds with same way working voltage signal with M.
In another alternative embodiment, as shown in fig. 3, when M is equal to N, M current signals are matched with N voltage signals one by one. For example, the electric energy metering chip is applied to electric energy metering of each device in a machine room, specifically, the devices in the machine room include M types of devices such as a cabinet, a fire fighting device, a monitoring device, and an emergency lighting device, working voltage and working current of each type of device are different from each other, and if the electric energy metering is to be performed on each device, a channel configuration module of the electric energy metering chip needs to match M paths of current path signals corresponding to M devices with N paths of voltage signals one by one.
In another alternative embodiment, as shown in fig. 4, when M is 2N, each of the N voltage signals is respectively matched with two of the M current signals. For example, the electric energy metering chip is applied to an electric energy meter for preventing electricity stealing, specifically, a certain college student apartment has M rooms, each room is provided with an electric energy meter for preventing electricity stealing, and the electricity consumption condition of each room needs to be monitored. The voltage of the input end and the voltage of the output end of each anti-electricity-stealing electric energy meter are the same voltage, and if the electricity-stealing phenomenon of each electric energy meter needs to be monitored, the voltage signal of each electric energy meter needs to be matched with the current signal corresponding to the input end and the output end of the electric energy meter respectively by the channel configuration module.
In an optional embodiment, the register is further configured to store a plurality of energy selection instructions, where the energy selection instructions are used to determine an energy type output by the energy module; the energy module is specifically used for carrying out energy calculation on the M groups of signal pairs according to the energy selection instruction so as to obtain M groups of energy values. Specifically, the energy type includes any one of active energy, total active energy, reactive energy, total reactive energy, apparent energy, and total apparent energy.
In an optional implementation manner, the electric energy metering chip further includes a waveform selection module 15, the register 14 is further electrically connected to the waveform selection module 15, the register 14 is further configured to store a plurality of waveform selection instructions, and the waveform selection instructions are used to determine an output waveform of the waveform selection module 15; the register 14 is also used for storing an output waveform of the waveform selection module 15, which in the present embodiment includes any one of a full-wave waveform, an alternating-current waveform, a fundamental wave waveform, and a direct-current waveform. In this embodiment, the waveform selection module is configured to process the signal input by the signal sampling module according to the waveform selection instruction. In particular, the waveform selection module 15 preferably includes various filters, such as: the full-wave filter, the alternating-current filter, the fundamental wave filter and the direct-current filter perform waveform processing on the current or voltage signal collected by the sampling module by adopting different filters, so that the output waveform can be any one of a full-wave waveform, an alternating-current waveform, a fundamental wave waveform and a direct-current waveform.
In an alternative embodiment, the electric energy metering chip 1 further includes an effective value module 16, and the effective value module 16 is electrically connected to the waveform selection module 15; the register 14 is further electrically connected with the effective value module 16, and the register 14 is further configured to store a plurality of effective value selection instructions, where the effective value selection instructions are used to determine the type of the effective value output by the effective value module 16; the register 14 is also used to store the effective value of the output waveform of the waveform selection module 15. The effective value module 16 is configured to calculate an effective value of the output waveform of the waveform selection module 15 according to the effective value selection instruction, so as to monitor the effective value of the waveform, thereby monitoring various power qualities, for example, by selecting different types of effective values, monitoring a period, a zero crossing, a voltage loss, an overvoltage, an overcurrent, and the like can be realized. In the present embodiment, the effective value calculation performed by the effective value module 16 on the sampled signal waveform may be slow effective value calculation or fast effective value calculation.
In an alternative embodiment, the electric energy metering chip further comprises a power module 17; one end of the power module 17 is electrically connected with the channel configuration module, and the other end is electrically connected with the energy module 13; the register 14 is also electrically connected with the power module 17, the register 14 is also used for storing a plurality of power selection instructions, and the power selection instructions are used for determining the type of power output by the power module 17; the power module 17 is configured to perform power calculation on the M groups of signal pairs according to the power selection instruction to obtain M groups of power values. The register 14 is also used to store M sets of power values. In this embodiment, the power of the waveform configured by the channel configuration module may be calculated by selecting an appropriate power type as needed, where the power type may be selected from active power, reactive power, apparent power, total active power, total reactive power, total apparent power, power factor, included angle, and the like.
In the present embodiment, the energy module 13, the waveform selection module 15, the effective value module 16, and the power module 17 preferably support a multiplexing algorithm, which can reduce hardware overhead, so that the cost of the calculation of multiple channels and the calculation of one channel is equivalent to the cost of hardware. When the calculation accuracy required by electric energy measurement is very high, the energy module and the power module do not adopt a multiplexing algorithm in view of the calculation accuracy.
In an optional embodiment, the power module 17 is further configured to calculate a total power value according to the M groups of power values; register 14 is also used to store the total power value.
In this embodiment, the energy module is further configured to calculate a total energy value according to the total power value or calculate a total energy value according to the M groups of energy values; the registers are also used to store M sets of energy values and total energy values. The energy in this embodiment may be a time accumulation of power, one power corresponding to one energy.
The embodiment discloses an electric energy metering chip, which is provided with a signal sampling module, a channel configuration module, an energy module and a register, wherein, a plurality of channel configuration instructions are prestored in the register to determine the matching relationship between the acquired voltage signals and the acquired current signals, the channel configuration module configures a plurality of channels of signals into a plurality of groups of signal pairs according to the channel configuration instructions taken out from the register, the energy module carries out energy calculation on the plurality of groups of signal pairs to obtain a plurality of groups of energy values, therefore, different choices of channel configuration instructions enable the same electric energy metering chip to be suitable for different application occasions, therefore, the multipurpose flexible configuration of the electric energy metering chip is increased, different electric energy metering schemes can be configured according to different application requirements, and the manufacturing cost of the electric energy metering device applying the electric energy metering chip is further reduced. In addition, an effective value module is arranged in the electric energy metering chip, so that the effective value of the output waveform can be monitored, and the electric energy quality can be monitored.
Example 2
The embodiment discloses an electric energy metering device, which comprises the electric energy metering chip in the embodiment 1.
The embodiment discloses an electric energy metering device, which is characterized in that a signal sampling module, a channel configuration module, an energy module and a register are arranged on an electric energy metering chip in the electric energy metering device, wherein, a plurality of channel configuration instructions are prestored in the register to determine the matching relationship between the acquired voltage signals and the acquired current signals, the channel configuration module configures a plurality of channels of signals into a plurality of groups of signal pairs according to the channel configuration instructions taken out from the register, the energy module carries out energy calculation on the plurality of groups of signal pairs to obtain a plurality of groups of energy values, therefore, different choices of channel configuration instructions enable the same electric energy metering chip to be suitable for different application occasions, therefore, the multipurpose flexible configuration of the electric energy metering chip is increased, different electric energy metering schemes can be configured according to different application requirements, and the manufacturing cost of the electric energy metering device applying the electric energy metering chip is further reduced. In addition, an effective value module is arranged in the electric energy metering chip, so that the effective value of the waveform can be monitored, and the electric energy quality can be monitored.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The electric energy metering chip is characterized by comprising a signal sampling module, a channel configuration module, an energy module and a register;
the channel configuration module is electrically connected with the signal sampling module and the energy module respectively;
the register is respectively electrically connected with the channel configuration module and the energy module, and is used for storing a plurality of channel configuration instructions which are used for determining the matching relationship between the voltage signal and the current signal;
the signal sampling module is used for collecting multiple paths of signals, and the multiple paths of signals comprise M paths of current signals and N paths of voltage signals;
the channel configuration module is used for configuring the multi-channel signals into M groups of signal pairs corresponding to the M current signals one by one according to the channel configuration instruction, wherein each group of signal pairs comprises a voltage signal and a current signal;
the energy module is used for carrying out energy calculation on the M groups of signal pairs to obtain M groups of energy values;
wherein M is a positive integer greater than 1, N is a positive integer, and M is greater than or equal to N.
2. The electric energy metering chip of claim 1, wherein when N is 1, the M current path signals are all matched with the same voltage signal.
3. The electric energy metering chip of claim 1, wherein when M is N, the M current signals are one-to-one matched with the N voltage signals.
4. The electric energy metering chip of claim 1, wherein when M is 2N, each of the N voltage signals is respectively matched with two of the M current signals.
5. The power metering chip of claim 1, wherein the power metering chip further comprises a waveform selection module;
one end of the waveform selection module is electrically connected with the signal sampling module, and the other end of the waveform selection module is electrically connected with the channel configuration module;
the register is also electrically connected with the waveform selection module and is also used for storing a plurality of waveform selection instructions, and the waveform selection instructions are used for determining the output waveform of the waveform selection module;
and the waveform selection module is used for processing the signal input by the signal sampling module according to the waveform selection instruction.
6. The power metering chip of claim 5, wherein the power metering chip further comprises a valid value module;
the effective value module is electrically connected with the waveform selection module;
the register is also electrically connected with the effective value module and is also used for storing a plurality of effective value selection instructions, and the effective value selection instructions are used for determining the type of the effective value output by the effective value module;
the effective value module is used for calculating the effective value of the output waveform of the waveform selection module according to the effective value selection instruction.
7. The power metering chip of claim 1, wherein the power metering chip further comprises a power module;
one end of the power module is electrically connected with the channel configuration module, and the other end of the power module is electrically connected with the energy module;
the register is also electrically connected with the power module and is used for storing a plurality of power selection instructions, and the power selection instructions are used for determining the type of power output by the power module;
and the power module is used for carrying out power calculation on the M groups of signal pairs according to the power selection instruction so as to obtain M groups of power values.
8. The electric energy metering chip of claim 7, wherein the power module is further configured to calculate a total power value according to the M groups of power values;
and/or the energy module and/or the power module support a multiplexing algorithm.
9. The electric energy metering chip of claim 1, wherein the register is further configured to store a number of energy selection instructions, the energy selection instructions being configured to determine an energy type output by the energy module;
the energy module is specifically configured to perform energy calculation on the M groups of signal pairs according to the energy selection instruction to obtain M groups of energy values.
10. An electric energy metering device, characterized in that the electric energy metering device comprises the electric energy metering chip of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556821.5A CN112730973A (en) | 2020-12-24 | 2020-12-24 | Electric energy metering chip and electric energy metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556821.5A CN112730973A (en) | 2020-12-24 | 2020-12-24 | Electric energy metering chip and electric energy metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112730973A true CN112730973A (en) | 2021-04-30 |
Family
ID=75615758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011556821.5A Pending CN112730973A (en) | 2020-12-24 | 2020-12-24 | Electric energy metering chip and electric energy metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112730973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113962183A (en) * | 2021-12-22 | 2022-01-21 | 杭州万高科技股份有限公司 | Electric energy metering chip interface circuit design method and interface circuit thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202904741U (en) * | 2012-10-29 | 2013-04-24 | 河南新天科技股份有限公司 | Multi-channel pre-pay electric energy meter |
| CN103424617A (en) * | 2013-05-13 | 2013-12-04 | 万高(杭州)科技有限公司 | Single-phase electric energy metering system |
| CN103424613A (en) * | 2012-12-04 | 2013-12-04 | 万高(杭州)科技有限公司 | Electricity stealing-prevention electric energy metering device and method for metering electric energy |
| CN104155515A (en) * | 2013-05-13 | 2014-11-19 | 苏州工业园区新宏博通讯科技有限公司 | Multipath ammeter |
| KR101741945B1 (en) * | 2016-01-14 | 2017-05-31 | 호남대학교 산학협력단 | System for total managing multi-channel electrical power energy |
| CN206321704U (en) * | 2016-12-21 | 2017-07-11 | 上海贝岭股份有限公司 | Electric energy computation chip and electric energy meter |
| CN109061289A (en) * | 2018-08-21 | 2018-12-21 | 北京五力泰科技有限公司 | A kind of electrical energy measurement scheme of voltage, currents combination flexibly configurable |
| CN109142839A (en) * | 2018-08-21 | 2019-01-04 | 南京南瑞继保电气有限公司 | A kind of binary channels mutually verifies electronic mutual inductor |
| CN110108934A (en) * | 2018-02-01 | 2019-08-09 | 株洲中车时代电气股份有限公司 | A kind of multichannel voltameter scale |
| CN209460302U (en) * | 2019-01-28 | 2019-10-01 | 浙江正泰仪器仪表有限责任公司 | A kind of multivoltage current loop AC ammeter |
| CN110579642A (en) * | 2019-09-20 | 2019-12-17 | 哈尔滨工业大学 | Zynq-based airborne alternating current multi-path parallel acquisition and processing system |
-
2020
- 2020-12-24 CN CN202011556821.5A patent/CN112730973A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202904741U (en) * | 2012-10-29 | 2013-04-24 | 河南新天科技股份有限公司 | Multi-channel pre-pay electric energy meter |
| CN103424613A (en) * | 2012-12-04 | 2013-12-04 | 万高(杭州)科技有限公司 | Electricity stealing-prevention electric energy metering device and method for metering electric energy |
| CN103424617A (en) * | 2013-05-13 | 2013-12-04 | 万高(杭州)科技有限公司 | Single-phase electric energy metering system |
| CN104155515A (en) * | 2013-05-13 | 2014-11-19 | 苏州工业园区新宏博通讯科技有限公司 | Multipath ammeter |
| KR101741945B1 (en) * | 2016-01-14 | 2017-05-31 | 호남대학교 산학협력단 | System for total managing multi-channel electrical power energy |
| CN206321704U (en) * | 2016-12-21 | 2017-07-11 | 上海贝岭股份有限公司 | Electric energy computation chip and electric energy meter |
| CN110108934A (en) * | 2018-02-01 | 2019-08-09 | 株洲中车时代电气股份有限公司 | A kind of multichannel voltameter scale |
| CN109061289A (en) * | 2018-08-21 | 2018-12-21 | 北京五力泰科技有限公司 | A kind of electrical energy measurement scheme of voltage, currents combination flexibly configurable |
| CN109142839A (en) * | 2018-08-21 | 2019-01-04 | 南京南瑞继保电气有限公司 | A kind of binary channels mutually verifies electronic mutual inductor |
| CN209460302U (en) * | 2019-01-28 | 2019-10-01 | 浙江正泰仪器仪表有限责任公司 | A kind of multivoltage current loop AC ammeter |
| CN110579642A (en) * | 2019-09-20 | 2019-12-17 | 哈尔滨工业大学 | Zynq-based airborne alternating current multi-path parallel acquisition and processing system |
Non-Patent Citations (2)
| Title |
|---|
| 丁霞;刘叶;王海铭;叶志明;王冬青;: "基于MSP430的智能电表设计", 青岛大学学报(工程技术版), vol. 30, no. 04, pages 68 - 72 * |
| 沈鑫;赵丹妮;曹敏;: "基于物联网技术的电能计量装置远程在线监测及分析平台研究", 电测与仪表, vol. 52, no. 16, pages 35 - 40 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113962183A (en) * | 2021-12-22 | 2022-01-21 | 杭州万高科技股份有限公司 | Electric energy metering chip interface circuit design method and interface circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104702208B (en) | Photovoltaic array ground insulation resistance online detecting system for high-power photovoltaic inverter | |
| CN103076491B (en) | Supply line's detection method of AC/DC universal and testing circuit | |
| CN104535839B (en) | Photovoltaic grid-connected inverter insulation resistance detecting method and detecting device for implementing same | |
| US20120049855A1 (en) | Dark IV monitoring system for photovoltaic installations | |
| CN106124844B (en) | A kind of direct current bus voltage detecting circuit | |
| CN104009516A (en) | Method and apparatus for controlling a power supply device | |
| CN205665317U (en) | Cable is to ground parameter testing appearance | |
| CN112730973A (en) | Electric energy metering chip and electric energy metering device | |
| CN202058289U (en) | Inspection device for electricity utilization information acquisition terminal | |
| CN1264022C (en) | Failure analysis monitoring method and system device used on power supply network | |
| CN212229042U (en) | Multichannel automatic switching device of grounding on-resistance tester | |
| CN107991529A (en) | Non-linear power measures analysis recorder | |
| CN205301413U (en) | Test system for vehicle quiescent current | |
| CN211061633U (en) | Direct current insulation monitoring device based on alternating current and direct current leakage current sensor | |
| CN206960628U (en) | A kind of integrated data acquisition unit for battery management system | |
| CN102169151A (en) | Cable network parallel test method | |
| CN206863127U (en) | One kind ground wire Auto-Test System | |
| CN105938159A (en) | Method and system for realizing multi-loop voltage and multi-loop current synchronous sampling | |
| Salvadori et al. | Design and implementation of a flexible intelligent electronic device for smart grid applications | |
| CN103884907A (en) | Sampling device, method and system for multi-loop electricity meter of electric power distribution cabinet | |
| CN111308208A (en) | Balanced type multi-path bus insulation monitoring device | |
| CN205826811U (en) | A kind of aging testing system | |
| CN209589110U (en) | A kind of automobile instrument sensor analog signals input circuit | |
| CN210199216U (en) | Anti-electricity-stealing full-factor test platform | |
| CN2687931Y (en) | Failure analyzing and monitoring system apparatud for power network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |