CN2197671Y - Charge counter of watt-hour meter - Google Patents

Abstract

The utility model relates to an attached multi-rate counter for a watt-hour meter which belongs to an electrical energy measurer. The utility model solves problem that a common watt-hour meter does not have the function of multi-rate electrical energy measure. The utility model is characterized in that a time control circuit is formed from an MPU integration chip (2) with an LCD (1), and a DC 1.5V dry cell (5) is used for supplying electricity. An electrical energy sampling module (7) is directly arranged under a character wheel of a degree measurer. A reflection type photoelectric coupler collects black-white grating signals which reflect the movement of the character wheel, two magnetic counters (6, 8) of a peak and a valley count, and the peak and the valley time intervals can be programmed by a programmer (4). The entire device is directly arranged on a junction box (10) and is provided with a lead sealing device (14).

Description

Charge counter of watt-hour meter

The utility model is a kind of controller that carries out multiple rate electric energy metrical on common three-phase or the single-phase watt-hour meter that is used for directly being attached to.

At present, the multi-rate meter that is used for electric energy metrical, domestic still do not have a unified approved product, its general discrete small-scale integrated package or employing single-chip microcomputer of adopting is formed time control and counting frequency dividing circuit, power by power frequency supply, the charactron clock shows, power consumption is big, when having a power failure, need to keep the clock operation and preserve data with standby power supply, and the electric energy sampling all is to obtain with infrared optical probe from watt-hour meter dial, for the watt-hour meter of different model,, therefore need join and different counting frequency dividing circuits corresponding to its rotating disk revolution difference of 1KWh, with the counter that suitable no-load voltage ratio gear is arranged, could realize that electric energy correctly measures (as the DSF19a-5 type multi-rate meter of Hangzhou instrucment and meter plant production).For above-mentioned reasons, existing multi-rate meter, volume is big, and failure factor is many, and price is expensive, gives and promotes, uses and bring a lot of difficulties.

Task of the present utility model provides a kind of brand-new design proposal, compact conformation, and the reliability height can directly be attached on the watt-hour meter junction box cover plate, makes the common electrical kilsyth basalt have electric energy peak, paddy, flat metering, realizes multiple rate function.

The multiple rate counter of the utility model attached type watt-hour meter by the time control circuit, electric energy sampling module (comprising reflecting photoelectric coupler and signal processing circuit), pulse distributor, two peaks, paddy message register and shells are formed.Control circuit is the microprocessor integrated clock chip that adopts the band LCDs of integrated design in the time of wherein, adopts the power supply of DC1.5V alkaline dry battery, keeps clock operation and data and preserves, and electric current is less than 10 μ A, and power consumption is minimum, does not therefore need standby power supply.The electric energy sampling module is the scheme of utilizing in the utility model patent (application number 942050428) " active real-time stepping pulse output type electric degree register ", by being installed in the sampling module below the register character wheel, gather the black-white grating signal that the reflection character wheel is walked about on the character wheel by reflecting photoelectric coupler, output is corresponding to the pulse of power consumption after processing of circuit, through pulse distributor directly promotes by the time control circuit peak (or paddy) message register of control period control meter degree, Fei Jidu is answered in realization.Whole device is contained in the shell, realizes being electrically connected by watt-hour meter junction box, and by rubber slab and the firm and hard existing sealing of connector cover and fixing, whole device directly is attached to forms an integral body on the watt-hour meter junction box, and be provided with sealing device.

Accompanying drawing 1 is multiple rate counter of the utility model attached type watt-hour meter and common electrical kilsyth basalt constitutional diagram.Accompanying drawing 2 is electric energy sampling plan figure.Accompanying drawing 3 is an electric energy sampling module electrical schematic diagram.Accompanying drawing 4 is the utility model control section schematic diagram.

Following adjoint is further done the most preferred embodiment explanation:

The utility model adopts the microprocessor integrated clock chip SO-03(2 of the band LCDs (1) of integrated design), have week, the time, minute, second shows, can carry out the time control operation as cycle period by week or 24 hours, can link to each other with operating button box (4) easily by plug-in unit (3), realize the period setting, can set three peaks, three paddy, six flat totally ten two periods every day, and adopt No. 5 alkaline batteries of joint (5) to power, clock chip has peak and two output terminals of low ebb, Control Allocation electric energy sampling pulse.Electric energy sampling module (7) adopts the embodiment (accompanying drawing 2) in the utility model patent (application number 942050428) " active real-time stepping output type watt-hour meter register ", on last digit character wheel (8) periphery, paste (or stamping) have with 0-9 the numeral corresponding chequered with black and white striped grating (5), the circuit module (7) that reflecting photoelectric coupler (6) ON2160 and circuit elements device are made one is installed in the below of character wheel group (3), and the window of photoelectrical coupler is aimed at last digit character wheel (8).Three exits of module, the 1. phase line of termination power (or A phase line), 2. termination zero line (or B phase line), 3. end is output terminal.When the watt-hour meter meter is spent, corresponding to every with 1KWh(or 0.1KWh), electric weight just has the output of pulse signal.The output terminal of electric energy sampling module (7) behind the message register actuation coil to pulse distributor, and pulse distributor is subjected to clock chip to set the control of period, when the peak output terminal is high level, the BG1 conducting, peak message register DJ630(6 is sent in pulse), and counting once, and peak pilot lamp D1 is bright simultaneously; Otherwise when the low ebb output terminal was high level, low ebb message register DJ630(8 was sent in BG2 conducting, pulse) and counting, the D2 pilot lamp is bright simultaneously, and indicating current is low-valley interval.When two control output ends are low level, then BG1 and all not conductings of BG2, two registers are not all counted, be current " putting down " period that is, by the bright indication of D3 pilot lamp, and the register of watt-hour meter continues counting (being total electric degree), total electric degree number deducts " peak " and " paddy " electric degree number, be " putting down " electric degree number, so just meter has been recorded three kinds of power consumptions, has realized multiple rate metering.Time control chip, pulse distributor, two message registers are installed in the ABS plastic shell (9), the electric energy sampling module is directly installed under the watt-hour meter counter character wheel, realize being electrically connected by watt-hour meter junction box (10), and by rubber slab (11) and terminal box cover plate (13) realization sealing and fixing, whole device directly is attached to forms an integral body on the watt-hour meter junction box, and be provided with lead sealing (14) device, have clock, two message registers and pilot lamp transparent window on the panel PVC label (13), very directly perceived.

Claims (1)

1. A kind ofly be used for directly being attached to the controller that carries out multiple rate electric energy metrical on common three-phase or the single-phase watt-hour meter terminal box.It is characterized in that: by the time control circuit (2), electric energy sampling module (7), pulse distributor, two peaks, paddy message register (being respectively 6,8) and shells (9) are formed.The time control circuit adopt the microprocessor integrated clock chip of the band LCDs of integrated design, adopt DC1.5V alkaline dry battery (5) power supply, the electric energy sampling module is directly installed on below the register character wheel, reflect the black-white grating signal that character wheel is walked about by the reflecting photoelectric coupler collection, peak, two message registers of paddy are installed on the controller, and pass through label (13) and go up transparent window, direct reading, entire controller is installed on the terminal box cover plate (12), and be provided with sealing device (14), realize being electrically connected by watt-hour meter junction box.

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