The anti-electricity-theft electric energy detection system of a kind of numeral
Technical field
The present invention relates to the electric energy field, be specifically related to the anti-electricity-theft electric energy detection system of a kind of numeral.
Background technology
China's alternating current electric energy detection major part still adopts induction type machinery electric energy meter to detect at present, in this case, have to adopt artificial copy reading ammeter, not only labour intensity is large, efficient is low for this, but also can exist check meter not in place, estimate and copy, leak the problem such as copy, mistake is copied, miscount and the cycle of checking meter is long, the control of stealing is not more known where to begin.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide the anti-electricity-theft electric energy detection system of a kind of numeral.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
The anti-electricity-theft electric energy detection system of a kind of numeral take single-chip microcomputer as the memory circuit core, uses the mode of serial ports to transmit data, with data address signal and pulse signal and single-chip microcomputer transmission data;
The computation chip that can measure active power, reactive power, meritorious energy, quadergy that power detection circuit adopts, and provide simultaneously two-way independently active power, voltage effective value, zero passage interrupt, can be according to the two-way flexibly anti-electricity-theft scheme that relatively can realize of active power independently;
Telecommunication circuit adopts bluetooth module to realize user's electric energy meter is carried out radio meter register, read the electric energy that user's accumulative total consumes, embedded HHW-SPP module is adopted in the bluetooth serial ports communication, one main one from the pairing use, primary module by portion of the handle sends instruction first, then send data to primary module from user's electric energy meter module, realize the wireless read functions of data.
Preferably, described single-chip microcomputer adopts the AT24C02 single-chip microcomputer, the A0 of AT24C02 single-chip microcomputer, and A1, A2 holds ground connection.
Preferably, described computation chip adopts the RN8209 chip, and the RN8209 chip is provided with serial line interface SPI and the serial line interface RSIO that is connected on the same data lines.
Preferably, described RN8209 chip adopts the SPI mode to communicate by letter, include for the capacitor C 1 of stablizing crystal oscillator frequency, capacitor C 2, play triode Q1, the triode Q2 of on-off action, comprise Transistor-Transistor Logic level, aanalogvoltage input pin series connection 800K resistance connects the 220V alternating current, is provided with the 800K resistance that is beneficial to heat radiation and the serial module structure of 8 100K resistance.
The present invention has the following advantages: it is master controller that system of the present invention adopts single-chip microcomputer, combined high precision electric energy computation chip and memory circuit, display circuit, data transmission circuit are realized digital anti-electricity-theft electric energy detection jointly, this system can accurately gather user's accumulative total and consume electric energy, and will totally consume energy value and show with power down and do not lose storage, make things convenient for the user to inquire about the electricity consumption situation, this system also utilizes bluetooth module to realize the copy reading of user's electric energy meter data wireless, has greatly improved meter reading efficiency.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below is described in detail as follows with preferred embodiment of the present invention.The specific embodiment of the present invention is provided in detail by following examples.
Embodiment
The anti-electricity-theft electric energy detection system of a kind of numeral specifically comprises following circuit design:
Power circuit adopts the tandem type integrated regulated power supply, and major part is to adopt linear voltage stabilization chip 7805 to realize voltage stabilizing, and when there was fluctuation in input voltage, output voltage kept constant device.Its cardinal principle is that single-phase alternating current is passed through power transformer, and rectification circuit, filtering circuit, mu balanced circuit change into galvanic current and press.
Take single chip computer AT 24C02 as the memory circuit core, use the mode of serial ports to transmit data, transmit data with data address signal (SDA) and pulse signal (SCK) with single-chip microcomputer; Since in the design as long as deposit the address with one, so A0, A1, A2 holds ground connection.
Power detection circuit adopts the RN8209 computation chip, RN8209 can measure active power, reactive power, meritorious energy, quadergy, and two-way independently active power, voltage effective value, zero passage interruption etc. are provided simultaneously, according to the two-way flexibly anti-electricity-theft scheme that relatively can realize of active power independently.RN8209 provides dual serial interface SPI and RSIO (data lines), conveniently and between the outside MCU communicates.Adopt the SPI mode to communicate by letter among the design, therefore 12 pins connect height.Capacitor C 1, C2 effect are to stablize crystal oscillator frequency.Triode Q1, Q2 play the effect of switch, make the level of input P1.4, P1.5 only have 5V and 0V, namely obtain Transistor-Transistor Logic level.Aanalogvoltage input pin series connection 800K resistance connects the 220V alternating current, among the design 800K resistance is divided into 8 100K resistance series connection, is conducive to like this heat radiation.The analog current channel B utilizes current transformer to gather at live wire, and analog current passage A utilizes minimum resistance string linked method to gather at zero line.
Telecommunication circuit adopts bluetooth module to realize user's electric energy meter is carried out radio meter register, reads the electric energy that user's accumulative total consumes.Embedded HHW-SPP module is adopted in the bluetooth serial ports communication, and one main one from the pairing use.Send instruction by primary module (portion of the handle) first, then send data to primary module from module (user's electric energy meter), realize the wireless read functions of data.
Above-described embodiment just is to allow the one of ordinary skilled in the art can understand content of the present invention and according to this enforcement for technical conceive of the present invention and characteristics being described, its objective is, can not limit protection scope of the present invention with this.Variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection of the present invention.