CN105425030A - Three-phase digital electric quantity transmitter - Google Patents
Three-phase digital electric quantity transmitter Download PDFInfo
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- CN105425030A CN105425030A CN201510995432.5A CN201510995432A CN105425030A CN 105425030 A CN105425030 A CN 105425030A CN 201510995432 A CN201510995432 A CN 201510995432A CN 105425030 A CN105425030 A CN 105425030A
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- 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 provides a three-phase digital electric quantity transmitter comprising a signal acquisition unit, a metering unit and a single-chip microcomputer processing unit which are connected in turn. The signal acquisition unit is arranged in the internal part of the three-phase digital electric quantity transmitter. The signal acquisition unit comprises a voltage transformer, a current transformer, a shunting circuit and a voltage stabilizing and voltage dividing circuit. The voltage transformer is connected with the voltage stabilizing and voltage dividing circuit. The current transformer is connected with the shunting circuit. The voltage stabilizing and voltage dividing circuit and the shunting circuit are respectively connected with the metering unit. The signal acquisition unit is used for respectively converting three-phase AC voltage signals and three-phase AC current signals into mv-level analog electric signals to be outputted to the metering unit. The metering unit is used for measuring and metering the received analog electric signals so as to acquire electric parameters and electric energy pulse signals. Various types of three-phase AC electric signals of different conditions are enabled to be compatible and the use threshold is reduced; meanwhile, the three-phase digital electric quantity transmitter has functions of one path of pulse output, two paths of alarm output, long-distance displaying, local displaying and communication.
Description
Technical field
The present invention relates to transmitter field, specifically be a kind of three-phase digital electric parameters transducer.
Background technology
The application in a power supply network of three-phase electricity transmitter is more and more extensive, although most three-phase electricity transmitters in the market can measure the electrical quantitys such as three-phase alternating voltage, electric current, power, power factor, frequency, and metering obtains electrical energy impulse signals; But because the function of measuring of the three-phase electricity transmitter of prior art calculates acquisition by mcu programming, therefore measuring accuracy is not high.Come, because its signal sampling unit is external structure, basis is provided as voltage transformer (VT), current transformer, partial pressure circuit of steady voltage again, after collecting three-phase alternating current electric signal, by gathering resistance, can only change the limitation that induced voltage could be measured into.Therefore, operating personnel need to coordinate actual condition (size of the three-phase alternating voltage gathered and three-phase current electric signal), the one of coupling is selected from available for different connection modes (as phase three-wire three, three-phase and four-line), Deng ability successful acquisition three-phase alternating current electric signal, and be applicable to the power test of high voltage low current or low voltage and high current; Further, there is debugging complexity, show and observe inconvenient, high in cost of production defect in the three-phase digital electric parameters transducer function also imperfection of prior art.
Publication number be CN203811681U application discloses a kind of electric parameters transducer, specifically disclose a kind of based on the electric parameters transducer that possess fault tolerance of FPGA field programmable gate array in conjunction with triplication redundancy technology, comprise three-phase signal acquisition module, Signal-regulated kinase, A/D sampling module, frequency measuring block, FPGA controller module, CAN communication module and power module, overcome existing electric parameters transducer and become at any three-phase that sending staggers the time will directly cause final change to send erroneous results, so that initiating system open loop or equipment malfunction are done, cause the defect that whole system is paralysed.
The electric parameters transducer of prior art and above-mentioned patent is in electrical signal collection process, all realized by external signal acquisition module, therefore, in actual mechanical process, just need to consider the suitable mode of connection according to actual condition, operating process is complicated, and easily makes mistakes, and causes the measurement that cannot realize electrical quantity; Meanwhile, adopt single-chip microcomputer to carry out metering computing to electric signal, measuring accuracy is lower.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of three-phase digital electric parameters transducer, realizes compatible polytype three-phase alternating current electric signal input, improves and measure efficiency; Measuring accuracy can be improved again simultaneously.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A kind of three-phase digital electric parameters transducer, comprises the signal gathering unit, metering units and the single-chip microcomputer processing unit that connect successively; It is inner that described signal gathering unit is positioned at described three-phase digital electric parameters transducer;
Described signal gathering unit comprises voltage transformer (VT), current transformer, divided circuit and partial pressure circuit of steady voltage; Described voltage transformer (VT) connects partial pressure circuit of steady voltage, and described current transformer connects divided circuit, and described partial pressure circuit of steady voltage and divided circuit are connected described metering units respectively;
Described signal gathering unit, for Real-time Collection three-phase alternating voltage signal and three-phase alternating current signal, exports described metering units to after described three-phase alternating voltage signal and three-phase alternating current signal are converted to the analog electrical signal of mv rank respectively;
Described metering units, for measuring the analog electrical signal received and measuring, obtains electrical quantity and electrical energy impulse signals, and exports described single-chip microcomputer processing unit to;
Described single-chip microcomputer processing unit, for controlling the output of described electrical quantity and electrical energy impulse signals.
Beneficial effect of the present invention is: the three-phase electricity transmitter measuring accuracy being different from prior art is not high, need the deficiency considering available for different connection modes, the invention provides a kind of three-phase digital electric parameters transducer, by signal gathering unit is built-in, coordinate and be provided with divided circuit, the analog electrical signal that the three-phase alternating current signal collected also can be changed into mv rank is directly measured for metering units.By the internal regulation of electric parameters transducer, and directly can read the metering units that electric signal carries out measuring, achieve and adopt the single mode of connection just to the compatibility of all types of three-phase alternating current electric signal of different operating mode, use threshold can be reduced, reduce the volume of three-phase electricity transmitter simultaneously; Further, directly calculate with metering units and obtain electrical quantity and metering and obtain the mode of electrical energy impulse signals and replace the metering system that mcu programming calculates, achieve the accurate measurement to three-phase alternating current loop electric signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of three-phase digital electric parameters transducer of the present invention;
Fig. 2 is the structural representation of the embodiment of the present invention 21 kinds of three-phase digital electric parameters transducers.
Label declaration:
1, signal gathering unit; 2, metering units; 3, single-chip microcomputer processing unit;
4, impulse output circuit; 5, output module is sent in change; 6, alarm output module; 7, communication module;
8, button display module; 9, memory module;
11, voltage transformer (VT); 12, current transformer; 13, divided circuit; 14, partial pressure circuit of steady voltage;
15, the first filtering circuit; 16, the second filtering circuit.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with embodiment.
The design of most critical of the present invention is: by signal gathering unit is built-in, coordinate and be provided with divided circuit, the analog electrical signal that the three-phase alternating current signal collected also can be changed into mv rank is directly measured for metering units, achieve and adopt the single mode of connection just to the compatibility of all types of three-phase alternating current electric signal of different operating mode, use threshold can be reduced.
Please refer to Fig. 1 and Fig. 2, the invention provides a kind of three-phase digital electric parameters transducer, comprise the signal gathering unit 1, metering units 2 and the single-chip microcomputer processing unit 3 that connect successively; It is inner that described signal gathering unit 1 is positioned at described three-phase digital electric parameters transducer;
Described signal gathering unit 1 comprises voltage transformer (VT) 11, current transformer 12, divided circuit 13 and partial pressure circuit of steady voltage 14; Described voltage transformer (VT) 11 connects partial pressure circuit of steady voltage 14, and described current transformer 12 connects divided circuit 13, and described partial pressure circuit of steady voltage 14 and divided circuit 13 are connected described metering units 2 respectively;
Described signal gathering unit 1, for Real-time Collection three-phase alternating voltage signal and three-phase alternating current signal, exports described metering units 2 to after described three-phase alternating voltage signal and three-phase alternating current signal are converted to the analog electrical signal of mv rank respectively;
Described metering units 2, for measuring the analog electrical signal received and measuring, obtains electrical quantity and electrical energy impulse signals, and exports described single-chip microcomputer processing unit 3 to;
Described single-chip microcomputer processing unit 3, for controlling the output of described electrical quantity and electrical energy impulse signals.
It should be noted that, described current transformer 12, for the no-load voltage ratio according to current transformer 12, the three-phase alternating current signal collected is converted to the range of current of mating with described metering units 2;
Described voltage transformer (VT) 11, for the no-load voltage ratio according to voltage transformer (VT) 11, converts the voltage range of mating with metering units 2 to by the three-phase alternating voltage signal collected;
Described divided circuit 13, for being processed through shunting by the three-phase alternating current signal after no-load voltage ratio process, changes the mv level analog electrical signal that described metering units 2 can directly be measured into;
Described voltage stabilizing current with partial pressure, for by the three-phase alternating voltage signal after no-load voltage ratio process through voltage stabilizing process, change d. c. voltage signal into, and then through voltage division processing, be converted to the mv level analog electrical signal that described metering units 2 can directly be measured.
Further, described signal gathering unit 1 also comprises the first filtering circuit 15 and the second filtering circuit 16, described voltage transformer (VT) 11 connects partial pressure circuit of steady voltage 14 by described first filtering circuit 15, and described current transformer 12 connects divided circuit 13 by described second filtering circuit 16.
Described filtering circuit, for the three-phase alternating current signal after described current transformer 12 or voltage transformer (VT) 11 conversion process or three-phase alternating voltage signal are carried out filtering process, and exports described metering units 2 to.
Seen from the above description, the three-phase alternating current electric signal collected first is converted to the scope that can be received by described metering units 2 by the present invention, and then through single order RC filtering process, eliminates undesired signal, thus improves the acquisition precision of three-phase alternating current electric signal.
Further, also comprise impulse output circuit 4, described impulse output circuit 4 is connected with described metering units 2;
Described impulse output circuit 4, for exporting the electrical energy impulse signals that described metering units 2 sends over.
Seen from the above description, the invention provides the local output function of a road electrical energy impulse signals, to grasp the metric results of described three-phase digital electric parameters transducer in real time.
Further, also comprise change and send output module 5, described change send output module 5 to be connected with described single-chip microcomputer processing unit 3;
Output module 5 is sent in described change, and the electrical quantity for being sended over by described single-chip microcomputer processing unit 3 changes corresponding analog electrical parameter signal into and exports.
Seen from the above description, the present invention also supports that display function is sent in strange land.Single-chip microcomputer is according to presetting, control to export an electrical quantity of specifying and send output module 5 to becoming, then becoming in the signal collecting device delivered under other operating modes by becoming the analog quantity form sending output module 5 to be changed into analog electrical signal, realizing synchronous strange land display.
Further, also comprise alarm output module 6, described alarm output module 6 comprises the first via and exports and the output of the second tunnel; Described alarm output module 6 is connected with described single-chip microcomputer processing unit 3;
Described single-chip microcomputer processing unit 3, a road also for the described alarm output module of correspondence 6 exports the threshold value setting a corresponding electrical quantity, and the described electrical quantity received and described threshold value are compared, according to comparative result control whether export one preset control signal to described alarm output module 6;
Described alarm output module 6, for receiving the control signal that described single-chip microcomputer processing unit 3 sends over, and is sent to corresponding first via output or the output of the second tunnel.
Seen from the above description, the present invention also provides two-way independently alarm output function.Can for the output on a road, the corresponding alarm threshold value presetting a corresponding electrical quantity; By the logical operation of single-chip microcomputer processing unit 3, when the electrical quantity received exceedes or is less than alarm threshold value, what output one preset controls signal to alarm output module 6, is exported by the road of alarm output module 6 in correspondence, for controlling the external unit that threshold value connects.
Further, also comprise communication module 7, described communication module 7 is connected with described single-chip microcomputer processing unit 3;
Described communication module 7, for setting up the on-line communication relation of described single-chip microcomputer processing unit 3 and external unit.
Seen from the above description, three-phase digital electric parameters transducer of the present invention also possesses the on-line communication function with external unit, can realize the mutual of information.
Further, also comprise button display module 8, described button display module 8 is connected with described single-chip microcomputer processing unit 3;
Described button display module 8, for showing described electrical quantity and electrical energy impulse signals, and the setting of systematic parameter.
Seen from the above description, three-phase digital electric parameters transducer of the present invention also possesses this locality and checks metric results and measurement result, and by the function that button is arranged parameter, facilitates field adjustable.
Further, also comprise memory module 9, described memory module 9 is connected with described single-chip microcomputer processing unit 3;
Described memory module 9, for storing systematic parameter and the electrical energy parameter of described three-phase digital electric parameters transducer.
Seen from the above description, three-phase digital electric parameters transducer of the present invention can also carry out back-up processing to correlation parameter, effectively prevents the loss of data under fortuitous event.
Embodiment one
Please refer to Fig. 1, the present embodiment provides a kind of three-phase digital electric parameters transducer, can carry out high-acruracy survey to electrical quantitys such as comprising voltage, electric current, power, power factor (PF), frequency, and accumulative electric energy exports; Can input by compatible polytype three-phase alternating current electric signal simultaneously, improve and measure efficiency.
The three-phase digital electric parameters transducer of the present embodiment comprises the signal gathering unit 1, metering units 2 and the single-chip microcomputer processing unit 3 that connect successively; It is inner that described signal gathering unit 1 is positioned at described three-phase digital electric parameters transducer;
Described signal gathering unit 1 comprises voltage transformer (VT) 11, current transformer 12, first filtering circuit 15, second filtering circuit 16, divided circuit 13 and partial pressure circuit of steady voltage 14; Described voltage transformer (VT) 11 connects partial pressure circuit of steady voltage 14 by described first filtering circuit 15, described current transformer 12 connects divided circuit 13 by described second filtering circuit 16, and described partial pressure circuit of steady voltage 14 and divided circuit 13 are connected described metering units 2 respectively;
Described signal gathering unit 1, for Real-time Collection three-phase alternating voltage signal and three-phase alternating current signal, exports described metering units 2 to after described three-phase alternating voltage signal and three-phase alternating current signal are converted to the analog electrical signal of mv rank respectively;
Described metering units 2, for measuring the analog electrical signal received and measuring, obtains electrical quantity and electrical energy impulse signals, and exports described single-chip microcomputer processing unit 3 to;
Described single-chip microcomputer processing unit 3, for controlling the output of described electrical quantity and electrical energy impulse signals.
The principle of work of the three-phase digital electric parameters transducer of the present embodiment is:
By postpone in signal gathering unit 1, the Wiring port that operating personnel's direct basis is unified carries out the grafting of triple-phase line, realizes the collection to three-phase alternating voltage signal and three-phase alternating current signal.Because the three-phase alternating voltage signal that collects and three-phase alternating current signal numerical value are comparatively large, cannot be read directly, therefore, need to be changed into the simulating signal that unit 2 reads that can be measured.Concrete, the voltage transformer (VT) 11 of the large voltage signal of three-phase alternating current that described signal gathering unit 1 collects first process carries out no-load voltage ratio process, change three-phase alternating current small voltage signal into, then carry out single order RC filtering process through the first filtering circuit 15, suppress and eliminate undesired signal wherein; Three-phase alternating current small voltage signal after filtering after process is converted to through the partial pressure circuit of steady voltage 14 of precision resister the mv level simulating signal that metering signal can directly read again, exports metering units 2 to.In like manner, the current transformer 12 of three-phase alternating current big current signal first process carries out no-load voltage ratio process, change three-phase alternating current small area analysis signal into, then single order RC filtering process is carried out through the second filtering circuit 16, suppress and eliminate undesired signal wherein, three-phase alternating current small area analysis signal after filtering after process, again after the shunting process of divided circuit 13, is converted to the mv level analog electrical signal that metering signal can directly read, then exports metering units 2 to.
Metering units 2 directly accurately calculates three-phase voltage to the analog electrical signal received, three-phase current, three phases active power, three phase reactive power, three-phase applied power, three phase power factor, the electrical quantitys such as frequency read in real time for single-chip microcomputer processing unit 3, and to real-time reception to analog electrical signal carry out quantitative statistics, acquisition comprises forward active energy, reverse active energy, forward reactive energy, the four-quadrant electrical energy pulse data of reverse reactive energy, convert corresponding electrical energy impulse signals to, export described electrical quantity and electrical energy impulse signals to read in real time for described single-chip microcomputer processing unit 3.Single-chip microcomputer processing unit 3, according to presetting, carries out modality to the electrical quantity received and electrical energy impulse signals, then controls to export.
Embodiment two
Please refer to Fig. 2, the present embodiment is the extension of embodiment one, same section is not repeated, difference is, a kind of three-phase digital electric parameters transducer that the present embodiment provides also comprises impulse output circuit 4, three tunnel and independently becomes and send output module 5, alarm output module 6, communication module 7, button display module 8 and memory module 9;
Described impulse output circuit 4 is electrically connected with described signal processing unit; Described change send output module 5, alarm output module 6, communication module 7, button display module 8 and memory module 9 to be electrically connected with described single-chip microcomputer processing unit 3 respectively.
Concrete, described impulse output circuit 4, for exporting the electrical energy impulse signals that described metering units 2 sends over; Output module 5 is sent in described change, and the electrical quantity for being sended over by described single-chip microcomputer processing unit 3 exports after changing corresponding analog electrical parameter signal into; Described single-chip microcomputer processing unit 3, a road also for the described alarm output module of correspondence 6 exports the threshold value setting a corresponding electrical quantity, and the described electrical quantity received and described threshold value are compared, according to comparative result control whether export one preset control signal to described alarm output module 6; Described alarm output module 6, for receiving the control signal that described single-chip microcomputer processing unit 3 sends over, and is sent to corresponding first via output or the output of the second tunnel; Described communication module 7, for setting up the on-line communication relation of described single-chip microcomputer processing unit 3 and external unit; Described button display module 8, for showing described electrical quantity and electrical energy impulse signals, and the setting of systematic parameter; Described memory module 9, for storing systematic parameter and the electrical energy parameter of described three-phase digital electric parameters transducer.
The principle of work of a kind of three-phase digital electric parameters transducer of the present embodiment is:
After described metering units 2 metering of signal processing unit obtains electrical energy impulse signals, can be exported by impulse output circuit 4, this locality realizing electrical energy pulse data is shown.
After single-chip microcomputer processing unit 3 receives electrical energy impulse signals and electrical quantity, according to arranging, an electrical quantity of specifying can be controlled to be sent to change and sending output module 5; Send output module 5 this electrical quantity to be changed into analog quantity 4-20mA or 0-5v range of signal to become and send the signal collecting device exported under other operating modes to realize synchronous strange land display by becoming again.
Single-chip microcomputer processing unit 3 can also arrange a corresponding guard and report output to the arbitrary electrical quantity in received electrical quantity, preferably can arrange two-way simultaneously and independently export.By pre-setting the alert threshold of a corresponding electrical quantity, be stored in memory module 9; After receiving this electrical quantity, itself and alert threshold are judged, when exceeding or be less than alert threshold, what can control that output one presets controls signal to alarm output module, exported by the road of alarm output module from correspondence again, realize the control to external unit.Optionally, described electrical quantity can be curtage parameter, described control signal be switched on or switched off connect electric signal, for controlling startup and the stopping of external unit; The present embodiment achieves according to different electrical quantitys, to the function that same external unit or different external units control.
Single-chip microcomputer processing unit 3 can also be communicated by standard MODBUS-RTU protocol networking with external unit by the bus interface of communication module 7, realizes the mutual of data.
Single-chip microcomputer processing unit 3 can also carry out this locality display by button display unit to obtained electrical quantity and electrical energy impulse signals, and realizes by button the setting that parameter etc. is sent in messaging parameter, alarm parameters and change, as change alarm threshold value; Optionally, described button display unit comprises 4 buttons and 5 Digital sum pipes.
The important parameter such as systematic parameter, electrical energy parameter can also be kept at memory module 9 by single-chip microcomputer processing unit 3, prevents parameter power down from losing by backup.
A kind of three-phase digital electric parameters transducer that the present embodiment provides can carry out on the basis of high-acruracy survey to ac signal, possess a road pulse output simultaneously, two-way report to the police export, strange land send aobvious, this locality to send aobvious and communication function.
Embodiment three
The present embodiment is the further restriction to embodiment one and embodiment two, concrete, described single-chip microcomputer processing unit 3 is ARM platform STM8 processor of single chip computer, adopt the processor of single chip computer of STM8S207S8 as data and logical process center, STM8S207S8 is 8 MCU, the highest operation dominant frequency up to 24MHz, based on breathing out not structure with 3 level production lines, and there is abundant Resources on Chip, reduce the Hardware Design cost;
Described metering units 2 is three-phase multifunctional metering units 2ATT7022C; Directly can read in real time for STM8 single-chip microcomputer by the electrical quantity such as accurate Calculation three-phase voltage, three-phase current, three phases active power, three phase reactive power, three-phase applied power, three phase power factor, frequency, and coordinate STM8 single-chip microcomputer to calculate four-quadrant energy data.
Described divided circuit 13 is manganese copper diverter; Described partial pressure circuit of steady voltage 14 is precision resister bleeder circuit.
Described change send output module 5 to comprise PWM modulate circuit, and arbitrary electrical quantity can be selected to send output as change, and output area can set arbitrarily within the scope of 0 ~ 5V or 0 ~ 20mA.
Described alarm output module 6 provides two-way independently to report to the police and exports outlet, carries out logical operation by single-chip microcomputer, and every way outlet can set arbitrarily the more upper limit or more lower limit warning, and arbitrary electrical quantity can be selected to carry out warning output.
Described communication module 7 adopts full-duplex/half-duplex interface circuit, can provide RS485 bus interface or RS232 bus interface, is communicated by standard MODBUS-RTU protocol networking.
In sum, a kind of three-phase digital electric parameters transducer provided by the invention, can not only realize the accurate measurement of three-phase alternating current loop electrical quantity; And achieve the single mode of connection of employing, the electric signal input measurement of compatible various power industry operating mode simultaneously; Thus significantly improve measuring accuracy and measure efficiency; Further, possess a road pulse output simultaneously, two-way report to the police export, strange land send aobvious, this locality to send aobvious and communication function.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing instructions of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a three-phase digital electric parameters transducer, is characterized in that, comprises the signal gathering unit, metering units and the single-chip microcomputer processing unit that connect successively; It is inner that described signal gathering unit is positioned at described three-phase digital electric parameters transducer;
Described signal gathering unit comprises voltage transformer (VT), current transformer, divided circuit and partial pressure circuit of steady voltage; Described voltage transformer (VT) connects partial pressure circuit of steady voltage, and described current transformer connects divided circuit, and described partial pressure circuit of steady voltage and divided circuit are connected described metering units respectively;
Described signal gathering unit, for Real-time Collection three-phase alternating voltage signal and three-phase alternating current signal, exports described metering units to after described three-phase alternating voltage signal and three-phase alternating current signal are converted to the analog electrical signal of mv rank respectively;
Described metering units, for measuring the analog electrical signal received and measuring, obtains electrical quantity and electrical energy impulse signals, and exports described single-chip microcomputer processing unit to;
Described single-chip microcomputer processing unit, for controlling the output of described electrical quantity and electrical energy impulse signals.
2. a kind of three-phase digital electric parameters transducer as claimed in claim 1, it is characterized in that, described signal gathering unit also comprises the first filtering circuit and the second filtering circuit, described voltage transformer (VT) connects partial pressure circuit of steady voltage by described first filtering circuit, and described current transformer connects divided circuit by described second filtering circuit.
3. a kind of three-phase digital electric parameters transducer as claimed in claim 1, it is characterized in that, also comprise impulse output circuit, described impulse output circuit is connected with described metering units;
Described impulse output circuit, for exporting the electrical energy impulse signals that described metering units sends over.
4. a kind of three-phase digital electric parameters transducer as claimed in claim 1, is characterized in that, also comprise change and send output module, and described change send output module to be connected with described single-chip microcomputer processing unit;
Output module is sent in described change, and the electrical quantity for being sended over by described single-chip microcomputer processing unit changes corresponding analog electrical parameter signal into and exports.
5. a kind of three-phase digital electric parameters transducer as claimed in claim 1, is characterized in that, also comprise alarm output module, and described alarm output module comprises the first via and exports and the output of the second tunnel; Described alarm output module is connected with described single-chip microcomputer processing unit;
Described single-chip microcomputer processing unit, a road also for the described alarm output module of correspondence exports the threshold value setting a corresponding electrical quantity, and the described electrical quantity received and described threshold value are compared, according to comparative result control whether export one preset control signal to described alarm output module;
Described alarm output module, for receiving the control signal that described single-chip microcomputer processing unit sends over, and is sent to corresponding first via output or the output of the second tunnel.
6. a kind of three-phase digital electric parameters transducer as claimed in claim 1, is characterized in that, also comprise communication module, and described communication module is connected with described single-chip microcomputer processing unit;
Described communication module, for setting up the on-line communication relation of described single-chip microcomputer processing unit and external unit.
7. a kind of three-phase digital electric parameters transducer as claimed in claim 1, is characterized in that, also comprise button display module, and described button display module is connected with described single-chip microcomputer processing unit;
Described button display module, for showing described electrical quantity and electrical energy impulse signals, and the setting of systematic parameter.
8. a kind of three-phase digital electric parameters transducer as claimed in claim 1, is characterized in that, also comprise memory module, and described memory module is connected with described single-chip microcomputer processing unit;
Described memory module, for storing systematic parameter and the electrical energy parameter of described three-phase digital electric parameters transducer.
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| CN106018925A (en) * | 2016-07-15 | 2016-10-12 | 广州开能电气实业有限公司 | DC system intelligent sensor |
| CN107015092A (en) * | 2017-06-15 | 2017-08-04 | 浙江恒电水利科技有限公司 | A kind of microcomputer comprehensive monitoring protector and monitoring protection method |
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| CN109001580A (en) * | 2018-09-26 | 2018-12-14 | 西安理工大学 | A kind of generator intelligent electric amount pick-up device |
| CN114137303A (en) * | 2021-10-14 | 2022-03-04 | 国能神皖安庆发电有限责任公司 | Measuring device and measuring method |
| CN114137303B (en) * | 2021-10-14 | 2024-03-01 | 国能神皖安庆发电有限责任公司 | Measuring device and measuring method |
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