CN2570800Y

CN2570800Y - External-mounted electric meter for valley point active power

Info

Publication number: CN2570800Y
Application number: CN 02267081
Authority: CN
Inventors: 吕根夫; 叶有福
Original assignee: XIANGSHAN DAGANG POWER EQUIPMENT FTY
Current assignee: XIANGSHAN DAGANG POWER EQUIPMENT FTY
Priority date: 2002-09-09
Filing date: 2002-09-09
Publication date: 2003-09-03
Anticipated expiration: 2012-09-09

Abstract

The utility model relates to a time integral device which adopts an electronic method to measure electric power or electric current. The rotation number of a rotating disk of an original total meter is utilized to convert to an infrared photoelectric signal or the electronic pulse output of the original total meter, the infrared photoelectric signal or the electronic pulse output is coupled in a valley point active power electric meter, and the count of the infrared photoelectric signal or the electronic pulse output can be carried out by the valley point active power electric meter at valley point. The valley point active power electric meter is provided with an input circuit which is connected with a DC power supply and can convert the electronic pulse signal of an original electric meter or machine rotation number to an infrared photoelectric signal, and the infrared photoelectric signal is conveyed to a display circuit through a programmable controller, and is displayed by a display. The programmable controller is connected with a set circuit and a clock circuit, wherein, the clock circuit is connected with a power failure protective circuit. The utility model can be used with an original electric meter, and can singly display the electric degree number at valley point; the utility model can realize the time sharing charging function of the active power electric meter under the condition of low cost, the accuracy of the utility model can achieve the same grade of the original total meter, and users are willing to accept that the timing error is less than one second in a day.

Description

Fitted outside valley point active power watt-hour meter

Technical field

The utility model relates to the device that adopts electronic method to measure the time integral of electric power or electric current, especially relates to a kind of fitted outside valley point active power watt-hour meter.

Background technology

For electricity consumption is all joined, electricity consumption is lacked in many electricity consumptions when impelling low ebb during the peak, need multi-rate electric energy meter, at present, existing multiple time-shared charge active watt-hour meter on the market, but the most dresses of domestic ammeter user is active watt-hour meter when being regardless of peak valley, it is summary table, these tables are intact mostly, can continue to use the several years, change the peak valley table into as if summary table is abandoned, cost is just high, and still do not have in the prior art can with the valley point active power watt-hour meter of summary table and usefulness.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiency of prior art, the fitted outside valley point active power watt-hour meter that provides a kind of and original summary table to be used.

For achieving the above object, the technical solution of the utility model is such: utilize the rotating disk revolution of former summary table to be converted to the electronic impulse output of infrared electro signal or former summary table, insert in this valley point active power watt-hour meter, it is counted when the paddy; This valley point active power watt-hour meter is loaded on outward on the former summary table, adopts Infrared remote controller that it is provided with period parameter and ammeter revolution parameter, makes the display screen of fitted outside valley point active power watt-hour meter can accurately show valley point active power electric degree number; Be provided with the electronic pulse signal of the former watt-hour meter that joins with direct supply or the input circuit that mechanical revolution is converted to the infrared electro signal in its electronic circuit,, show by display to display circuit through programmable controller; Programmable controller is connected with initialization circuit, clock circuit, and what link to each other with clock circuit has a power down protection circuit.

The utility model is to be used with former watt-hour meter compared with prior art, electric degree number in the time of showing paddy separately, in the function of cost than realization time-shared charge active watt-hour meter under the low condition, and accuracy reaches and former summary table ad eundem, and day timing error was less than one second, and the user takes like a shot.

Description of drawings

Fig. 1 is an embodiment block diagram of the present utility model.

Fig. 2 is the circuit theory diagrams of the utility model embodiment.

Embodiment

In conjunction with the accompanying drawings the utility model is further described with embodiment below.

By illustrated in figures 1 and 2, a kind of fitted outside valley point active power watt-hour meter of the present utility model is provided with former watt-hour meter pulse signal that joins with direct supply or the input circuit that is converted to the infrared electro signal, through programmable controller, is shown by display to display circuit; Programmable controller also be connected with the remote control receptivity initialization circuit, have the clock circuit of storer, what link to each other with clock circuit has a power down protection circuit;

Physical circuit is as follows: in DC circuit, the civil power live wire L1 and the ground wire L2 of voltage dependent resistor (VDR) RV and access link, and with resistance R 7, and and the capacitor C 2 that is in parallel of R7 join, series resistor R8 again, become direct current of voltage regulation behind another termination voltage stabilizing diode DW of R8, and commutation diode D1, commutation diode D1 output ripple direct current capacitor C 1, C6, the C8 through being in parallel, be the positive pole of this circuit, offer the circuit that each needs power supply; This power supply is given joining integrated circuit U1 with it through the diode D2 step-down and capacitor C 5 filtering of serial connection; To the integrated circuit U2, the U4 that link with it, be connected in series diode D4 through parallel resistor R9 again, form time positive pole of this circuit; This time anodal through with D4 diode in series D3 step-down after charge the battery; The negative pole of this circuit is ground wire L2;

In input circuit, divide two kinds of signal sources, a kind of from mechanical type rotating disk ammeter, another kind of from electronic electricity meter, input circuit only allows a kind of signal to enter; For mechanical type rotating disk ammeter, input circuit is made up of resistance R 1, R2, R3, R4, R5, R6, infrarede emitting diode FD, infrared receiving diode SD, integrated circuit U3A; Wherein resistance R 6 is connected with infrarede emitting diode FD, the positive pole of another this circuit of termination of resistance R 6, the negative pole of another this circuit of termination of infrarede emitting diode FD, the infrared light that infrarede emitting diode FD sends reflects to infrared receiving diode SD through the rotating disk of ammeter, infrared receiving diode SD connecting resistance R2 and resistance R 4, the negative pole of another this circuit of termination of resistance R 4, the positive pole of another this circuit of termination of infrared receiving diode SD, the 3rd pin of another termination integrated circuit U3A of resistance R 2, resistance R 1 links to each other with resistance R 3 and resistance R 5, the positive pole of resistance R 5 another these circuit of termination, the negative pole of another this circuit of termination of resistance R 3, the 2nd pin of another termination integrated circuit U3A of resistance R 1, the 2nd pin of integrated circuit U3A is the negative input end of operational amplifier, use at this circuit electrical voltage point for referencial use, the 3rd pin of integrated circuit U3A is the positive input terminal of operational amplifier, doing the infrared signal input at this circuit uses, the 4th pin of integrated circuit U3A connects the negative pole of this circuit, the 8th pin of integrated circuit U3A connects the positive pole of this circuit, the 1st pin of integrated circuit U3A is the output terminal of operational amplifier, the 1st pin of integrated circuit U3A is connected to the 9th pin of programming Control integrated circuit U1, counts;

The electronic electricity meter input circuit is by pulse signal+end input port L3, and pulse signal-end input port L4 and resistance R 10 are formed; The passive pulse signal of electronic electricity meter is input to programming Control integrated circuit U1 through L3 mouth and pull-up resistor R10 and counts, the positive pole of this circuit of termination of resistance R 10, the 9th pin of another termination integrated circuit U1 and pulse signal+end input port L3, pulse signal-end input port L4 connects the negative pole of this circuit;

Programmable controller is made up of integrated circuit U1, capacitor C 3, C4, C7, resistance R 9, crystal oscillator XT1; The negative pole of this circuit of termination of capacitor C 3, the 6th pin of another termination crystal oscillator XT1 of capacitor C 3 and integrated circuit U1, the negative pole of this circuit of termination of capacitor C 4, the 7th pin of another termination crystal oscillator XT1 of capacitor C 4 and integrated circuit U1, the negative pole of this circuit of termination of capacitor C 7, the 4th pin of another termination integrated circuit U1 of capacitor C 7 and resistance R 9, the other end of resistance R 9 links to each other with time positive pole of this circuit, capacitor C 7 and resistance R 9 form the reset signal of the 4th pin of integrated circuit U1, the 8th pin of integrated circuit U1 links to each other with the 1st pin that resistance R 11 and remote control receive a J2, the 2nd pin of integrated circuit U1 links to each other with the 6th pin of integrated circuit U4, the 3rd pin of integrated circuit U1 links to each other with the 7th pin of integrated circuit U4, the 12nd pin of integrated circuit U1 links to each other with the 5th pin of integrated circuit U4, the 17th pin of integrated circuit U1 links to each other with the 12nd pin of integrated circuit U2, the 18th pin of integrated circuit U1 links to each other with the 11st pin of integrated circuit U2, the 19th pin of integrated circuit U1 links to each other with the 10th pin of integrated circuit U2, the 20th pin of integrated circuit U1 links to each other with the 9th pin of integrated circuit U2, the 15th pin of integrated circuit U1 links to each other with time positive pole of this circuit, the 5th pin of integrated circuit U1 links to each other the 1st of integrated circuit U1 with the negative pole of this circuit, 10,11,13,14,16 pins are the sky pin.

Display circuit is by integrated circuit U2, and LCD panel J1 forms; The 12nd pin of the 1st pin and LCD panel J1 of integrated circuit U2 links to each other, the 11st pin of the 2nd pin and LCD panel J1 of integrated circuit U2 links to each other, the 10th pin of the 3rd pin and LCD panel J1 of integrated circuit U2 links to each other, the 9th pin of the 4th pin and LCD panel J1 of integrated circuit U2 links to each other, the 8th pin of the 5th pin and LCD panel J1 of integrated circuit U2 links to each other, the 7th pin of the 6th pin and LCD panel J1 of integrated circuit U2 links to each other, the 6th pin of the 7th pin and LCD panel J1 of integrated circuit U2 links to each other, the 5th pin of the 8th pin and LCD panel J1 of integrated circuit U2 links to each other, the 1st pin of the 21st pin and LCD panel J1 of integrated circuit U2 links to each other, the 2nd pin of the 22nd pin and LCD panel J1 of integrated circuit U2 links to each other, the 3rd pin of the 23rd pin and LCD panel J1 of integrated circuit U2 links to each other, the 4th pin of the 24th pin and LCD panel J1 of integrated circuit U2 links to each other, the 20th pin of the 41st pin and LCD panel J1 of integrated circuit U2 links to each other, the 19th pin of the 42nd pin and LCD panel J1 of integrated circuit U2 links to each other, the 18th pin of the 43rd pin and LCD panel J1 of integrated circuit U2 links to each other, the 17th pin of the 44th pin and LCD panel J1 of integrated circuit U2 links to each other, the 16th pin of the 45th pin and LCD panel J1 of integrated circuit U2 links to each other, the 15th pin of the 46th pin and LCD panel J1 of integrated circuit U2 links to each other, the 14th pin of the 47th pin and LCD panel J1 of integrated circuit U2 links to each other, the 13rd pin of the 48th pin and LCD panel J1 of integrated circuit U2 links to each other, the 13rd pin of integrated circuit U2 links to each other with the negative pole of this circuit, the 17th pin of integrated circuit U2 links to each other with the positive pole of this circuit, the 16th pin of integrated circuit U2 links to each other with time positive pole of this circuit, the 15th pin of integrated circuit U2 links to each other with crystal oscillator XT1, the public crystal oscillator XT1 of integrated circuit U1 and integrated circuit U2, the 14th of integrated circuit U2,18,19,20,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40 pins are the sky pin in this circuit;

Initialization circuit receives a J2 by remote control, and resistance R 11 is formed; One end of resistance R 11 links to each other with the positive pole of this circuit, the other end of resistance R 11 and remote control receive the 1st pin of a J2 and the 9th pin of integrated circuit U1 links to each other, the 2nd pin that remote control receives a J2 links to each other with the negative pole of this circuit, the 3rd pin that remote control receives a J2 links to each other with the positive pole of this circuit, setting signal receives the 1st pin of a J2 and the 8th pin that pull-up resistor R11 is input to programming Control integrated circuit U1 through remote control, by initialization circuit programmable controller being carried out the period according to electricity consumption department regulation sets, ammeter parameter setting and time are set, the time of electric degree number and actual motion when LCD panel can directly show paddy;

Clock circuit is by integrated circuit U4, and crystal oscillator XT2 forms; Crystal oscillator XT2 receives at two ends the 2nd pin of integrated circuit of clock U4 and the 3rd pin of clock integrated circuit U4 respectively, the 4th pin of integrated circuit of clock U4 links to each other with the negative pole of this circuit, the 1st pin of integrated circuit of clock U4 links to each other with time positive pole of this circuit, and the 8th pin of integrated circuit of clock U4 links to each other with positive pole and the commutation diode D3 of battery BT;

The power down protection circuit is by commutation diode D3, commutation diode D4, and battery BT forms.When alternating current (civil power 220V) dead electricity, be the 1st the pin no-voltage of U4, battery BT send electricity effectively to the 8th pin of integrated circuit of clock U4, because clock circuit has storer by integrated circuit U4 inside, even alternating current dead electricity like this, the electric degree number that the programming Control integrated circuit is sent here is kept in the storer of integrated circuit of clock U4, also operation as usual of the clock circuit in the integrated circuit of clock U4 simultaneously.

Claims

1, a kind of fitted outside valley point active power watt-hour meter is characterized in that: this table is outer being loaded on the former summary table, is made up of DC circuit, input circuit, programmable controller, initialization circuit, clock circuit, power down protection circuit and display circuit; DC circuit is connected with above-mentioned other each circuit; The input end of input circuit is connected with the delivery outlet of former summary table, and is connected with programmable controller; Programmable controller is connected with initialization circuit, clock circuit and display circuit; What link to each other with clock circuit has a power down protection circuit.

2, want 1 described a kind of fitted outside valley point active power watt-hour meter according to right, it is characterized in that: the input end of said input circuit is connected with the delivery outlet of former summary table, former summary table is a kind of mechanical turntable type ammeter, and its input circuit is made up of resistance R 1, R2, R3, R4, R5, R6, infrarede emitting diode FD, infrared receiving diode SD, integrated circuit U3A; Wherein resistance R 6 is connected with infrarede emitting diode FD, another termination positive pole, another termination negative pole of infrarede emitting diode FD; Infrared receiving diode SD connecting resistance R2, R4, another termination negative pole of R4, another termination positive pole of infrared receiving diode SD, the 3rd pin of another termination integrated circuit U3A of R2; Resistance R 1 links to each other with resistance R 3, R5, another termination positive pole of R5, another termination negative pole of resistance R 3; Second pin of another termination integrated circuit U3A of resistance R 1, the 4th pin of integrated circuit U3A connects negative pole, and the 8th pin of integrated circuit U3A connects positive pole, and first pin of integrated circuit U3A connects the 9th pin of programming Control integrated circuit U1.

3, want 1 described a kind of fitted outside valley point active power watt-hour meter according to right, it is characterized in that: the input end of said input circuit is connected with the delivery outlet of former summary table, former summary table is a kind of electronic electricity meter, its input circuit by pulse signal anode input port L3, pulse signal negative terminal input port L4, and resistance R 10 form, resistance R 10 is connected another termination positive pole with the 9th pin of pulse signal anode input port L3 and programming Control integrated circuit U1; Pulse signal negative terminal input port L4 connects negative pole.