CN2442333Y

CN2442333Y - Electronic number recorder for overhead electric meter box

Info

Publication number: CN2442333Y
Application number: CN 00226898
Authority: CN
Inventors: 杨建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-14
Filing date: 2000-10-14
Publication date: 2001-08-08
Anticipated expiration: 2010-10-14

Abstract

The utility model relates to an electronic number recorder for an overhead electric meter box. The utility model is composed of a hand held meter reading displayer and a data acquisition circuit additionally added on an overhead electric meter. The meter reading displayer comprises a keyboard encoding part, a coded modulation transmission part, and an infrared receiving and decoding data processing display part. The part additionally added on an electric meter is composed of a common part and a measured electric meter data acquisition system. The utility model has the advantages of accurate meter reading, time saving, labor saving, and low cost.

Description

High-altitude ammeter box electronic meter reading instrument

The utility model relates to a kind of meter copying device, and particularly a kind of need not making friends with can be to the electronic meter reading instrument of high-altitude ammeter reading.

Except manual metering, reported the permission distant kilowatt meter recorder at present, needed bigger investment, implemented inconvenient.Yet there are no the report of small hand-held meter reading instrument.

The utility model purpose provides a kind of high-altitude ammeter box electronic meter reading instrument.

The present utility model purpose is achieved through the following technical solutions: a kind of high-altitude ammeter box meter reading instrument, form by the hand-held data acquisition circuit of checking meter display instrument and being attached on the ammeter of high-altitude, it is characterized in that the display instrument of handing of checking meter comprises that desire is measured ammeter encodes that number is put in de-noising and plus-minus is put number (1), formation and coded modulation infrared emission (2) with the address user code of coded signal modulation and emission, receive and show the infrared reception decoding data processing and the demonstration (3) of ammeter measured value, the data acquisition circuit that is attached on the ammeter of high-altitude is made of data acquisition system (DAS) on measured ammeter group common part and the single ammeter, and described common part comprises the generation (A) of infrared signal amplification decode address, data acquisition process (B), coded modulation emission (C), the major-minor power-supply system is formed; Described data acquisition system (DAS) is made up of the output (C ') of photo-electric data acquisition maintenance (A '), data storage and processing (B '), data.

Collection ammeter revolution in the utility model is to adopt optoelectronic switch to be installed in the gear drive part of ammeter.

Number is put in keyboard coding de-noising wherein and plus-minus is put the middle employing of number (1) at BCD scrambler IC ₁By diode VD ₃, VD ₄Produce high-order Q ₄Low 3, by VD ₁, VD ₂Deliver to the D of IC ₀Or D ₁, and obtain complete 4 8421 yards.

The utility model advantage is:

1, checking meter accurately---the design has fully used contemporary electronic technology, and principle is non-with other, and texture ratio is novel, and the demonstration of the collection of the ammeter number of degrees and the numerical value of checking meter accurately and reliably, makes the people relieved, very helps the fair and rational charge of town and country electricity-management personnel;

2, time saving and energy saving---use this instrument, because personnel needn't climb to a higher point, operation is just on ground, and " device hundred usefulness "; This compares with traditional manual method, had not only saved time really, but also laborsaving, and safety relatively, liked by electricity-management personnel and peasant;

3, cheap---compare with present existing other utensil of checking meter, its price is low really, buys more cheap.

4, save manpower---China's town and country electricity management department is because manual metering is carried out in most areas so far, and method falls behind, and it is more to choose, and wastes bigger; If use and promote this product from now on, because the method advanced person, and " device hundred usefulness ", can accomplish that a people pushes up ten people, it is economical again to save manpower, and thrilling its effect be!

Description of drawings:

Fig. 1 is the display instrument principle sketch of checking meter.

Fig. 2 is the display instrument fundamental diagram of checking meter.

Fig. 3 is an ammeter data Acquisition Circuit principle sketch.

Fig. 4 is an ammeter data Acquisition Circuit common part schematic diagram.

Fig. 5 is an ammeter data Acquisition Circuit data acquisition system (DAS) schematic diagram.

Embodiment: the utility model embodiment and principle of work are elaborated below in conjunction with accompanying drawing:

The utility model is made up of following two large divisions substantially: the display instrument of the first, checking meter; The second, be attached to data acquisition circuit on the ammeter of high-altitude.The each several part detailed circuit consists of:

One, the display instrument of checking meter: this part is made up of following three fractions: (1) keyboard coding disappears, and throat is put number and plus-minus is put number; (2) formation of address user code and coded modulation infrared emission; (3) infrared reception decoding data is handled and is shown.More than the principle of work of each ingredient be: (1) fraction---because BCD scrambler IC ₁(4532) can only work out 3 binary codings of output, not have the 4th, promptly 8 and 9, pass through diode VD for this reason ₃VD ₄Produce high-order Q ₄Low 3, by VD ₁, VD ₂Deliver to IC ₁D ₀Or D ₁Thereby, obtain complete 4 8421 yards, send into IC ₂, IC ₃(4510) input end is pressed numerical key, when producing 4 binary-coded decimals, and IC ₁The GS signal through R ₁, C ₁Send into IC after the integration time-delay de-noising ₄CP end, IC at this moment ₄(4017) Q ₁Saltus step is a high level, with IC ₁The GS signal add to and a door input end, this output terminal is uprised by low, is added to IC ₂The number end put make it effective, thereby storage is down by IC ₁Send the binary-coded decimal of representing ten bit address here, unclamp numerical key, selected more required number peace key is pressed IC ₁The GS signal again through R ₁C ₂The integration time-delay makes IC as the CP signal ₄Q ₂The end saltus step is that high level is added to second and a door input end, and output terminal adds to IC ₃Put number end, make its effectively binary-coded decimal of a storage representative position, after finishing ten positional numbers, unclamp numerical key, IC ₁EO end high level through R ₂, C ₁IC when counting when the integration time-delay afterwards and was last time put ₄The Q that produces ₂Signal adds to the 3rd and door, and the output terminal saltus step is a high level, makes IC ₄R end reset, ready for putting number next time.For convenience put number, can add and subtract and put number, when adding counting key K ₁After pressing, K ₁Pass through VD ₅Drop-down gauge IC ₉Be low level, thereby make IC ₉Q ₉Output frequency is that the pulse signal of 1.28HZ adds IC ₂With IC ₃CP end because K ₁Make IC ₃Counting fill that to be permitted to hold CI be zero, so IC ₃With IC ₂Frequency by 1.28HZ adds counting successively.IC ₂With IC ₃Output terminal presents be there emerged a the position and constantly progressively increases to hundred BCD signals, subtracts counting key K when pressing ₃The time IC ₂With IC ₃Add-minus function end U/D low level is also passed through CP ₆Make IC ₃CI be that low level is effective, pass through VD ₆, VD ₅Pull-down counter IC ₉R make it effective, to IC ₂With IC ₃CP end pulse, IC are provided ₁, IC ₂The output binary-coded decimal successively decreases from the low level to a high position successively, thereby finishes its plus-minus counting.(2) fraction---after finishing a position, X position number, IC ₂Send represent ten binary-coded decimal to IC ₅(2262) address end A ₆To A ₈, also give IC simultaneously ₆(4511) BCD decoding drives seven sections display circuits, drives the charactron demonstration and represents ten address number.IC ₃Send a position binary-coded decimal to IC ₅Data terminal A to D, give simultaneously IC again ₇Show a bit address numbering so that drive charactron.IC ₅A ₁To A ₄Be fuselage code, finish by tri-state switch.Press the key K that checks meter ₃The time IC ₅IN be low level, so OUT end output represent the digital signal of address and data-signal through in-line coding, by with the high-frequency signal of door modulation 40KHZ, after amplifying, launch by infrared transmitting tube.(3) part---come from infrared data signal that high-altitude ammeter adjunct circuit sends and send into IC after amplifying when the infrared receiver on the display instrument of checking meter receives through 9013 ₁₀(2272) the IN end is handled comparison, receives to comprise three-state address signal and IC in the signal ₁₀Address signal A ₁To A ₈IC when state is identical ₁₀OT output high level state signal, data output end A, B, C, D outputting data signals are given IC ₁₂To IC ₁₆BCD to latch the input end of decoder driver pending, IC ₁₀The OT signal through phase inverter I ₇Give IC after anti-phase ₉R end and IC ₈R _BEnd makes two counters effective, behind 16 clocks, and IC ₈Q ₂B is a high level and through diode VD ₇, VD ₈Resistance R ₇Locking clock is to by IC ₉Q ₂The pulse clock of sending here does not have effect again.Simultaneously IC ₈The Q of locking ₂High level is delivered to phase inverter I ₆And IC ₁₁CP end, this moment IC ₁₁Q ₁Become high level, and add to Sheffer stroke gate I ₁Input end is because phase inverter I ₆Output terminal makes IC ₈RA be low level, IC ₈CPA through IC ₉Q ₁End begins counting through after 4 pulses, IC ₈Q ₁For high level and be added to the common port of five Sheffer stroke gates, because Sheffer stroke gate I ₁The other end is by IC ₁₁Q add high level, so I ₁Output low level is to IC ₁₂Storage Data Control end LE, make its storage and showing from IC ₁₀First of the BCD electric quantity data certificate that data terminal provides because five four BCD data on the ammeter after first data transmit, next transmit second data according to dividing five transmission, because of will carrying out encoding and decoding to it, so that IC ₁₀OT state end be low level in the interval, this low level just in time makes IC ₈RA and RB reset, ready for beginning new counting.After decoding, second data arrives and gives IC with numeric data code ₁₂To IC ₁₆Data input pin.IC ₈CPB begin again the counting, make IC behind the locking clock again ₈CPA effective, work as Q ₁Making five Sheffer stroke gate common ports when A is effective is high level, and that different is IC ₈The pulse of locking is added to IC ₁₁CP end, make Q ₂Saltus step is that high level is added to Sheffer stroke gate I ₂Thereby, make IC ₁₃Effectively storage and show the second order digit number of it is believed that of LE.And so forth up to five Data Transfer Dones.Since when transmitting first BCD data, IC ₈Q ₂B is to IC ₁₁CP end pulse is provided, this state end is just by high step-down, and passes through VD ₉Drop-down IC ₉R be low level, so IC ₉Under the oscillator effect, count all the time, behind five Data Transfer Dones, just through 4096 frequency divisions, IC ₉Q ₁₂End output high level is added to IC ₁₁R end it is resetted.IC ₁₁State end Q ₀Uprise by low, through R ₈Light the LDD pilot lamp.And make pull-down diode VD ₉Invalid, IC ₉Then reset, finish its operation.

Two, data acquisition circuit: the data acquisition circuit that is attached on the ammeter of high-altitude is made up of common part and data acquisition system (DAS).Its detailed circuit diagram is: the generation that (1) common part---A, infrared signal are amplified decode address: be attached to the infrared remote receiver on the ammeter box of high-altitude, the infrared signal that receives the display instrument transmission of checking meter when it is amplified through demodulation, gives IC ₄(2272) carry out the processing of address code and numeric data code in inside, at first differentiate address code A ₁To A ₄Ternary fuselage code and A ₅To A ₈If the chip select address sign indicating number set by the BCD switch of user conform to the signal of data output end A, B, C, a D output representative bit address, IC simultaneously ₄High level signal behind the state end OT output hopping.

B, data acquisition process: by IC ₄(2272) Shu Chu A, B, C, D address signal are sent into IC ₅(4028) the BCD code translator is deciphered, and exports corresponding five Sheffer stroke gate I _xCommon port, IC ₄Status signal OT send into counter IC ₁With IC ₂Reset terminal resets, and is ready for handling electric quantity data.K on the display instrument of checking meter ₃After key unclamps, IC ₄State end OT then saltus step be low level, IC ₁And IC ₂Effectively begin counting, at first by IC ₁The Q of oscillator divider ₁₄Behind frequency division, give IC ₂Clock end CP clock signal is worked as IC ₂D ₂When jumping, give five Sheffer stroke gate I this signal to high level ₁With diode VD ₁End, I ₁Door is given after anti-phase on the electronic switch on the ammeter, chooses one group of BCD electric quantity data, because that electronic switch has passed through in conversion is anti-phase, so this group BCD data are passed through I before launching processor sending into ₆After the anti-phase correction of I, send into IC ₃(2262) data input pin A, B, C, D order like this, IC ₂Q ₃, Q ₄, Q ₅, Q ₆Saltus step is a high level signal successively, chooses the remaining I of five Sheffer stroke gates respectively ₂, I ₃, I ₄, I ₅Door is chosen corresponding electronic switch through after anti-phase, after process is back and forth covert, then represents reality the BCD data of electric weight numerical value to deliver to IC ₃A, B, C, D end, thereby carried out data acquisition process.C, coded modulation emission: first BCD data are delivered to IC on the ammeter ₃In the time of on the data, IC ₂D ₂The level signal that end is sent adds to diode VD ₁On, it gives Sheffer stroke gate I again ₆On the port, owing to IC this moment ₁Q ₁₄Clock end this moment also is a high level, so it and VI ₁Effect under make I ₆After low level, deliver to IC ₃(2262) IN end, make it effectively after, through IC ₃After in-line coding is handled,, add to the high frequency oscillator of AND circuit modulation 4CKH, after amplifying, launch data-signal by infrared tube by OUT end output pulse data signal, subsequently, IC ₁Q ₁₄Second pulse of clock is passed through IC again after arriving and choosing data cell by five with door electronic switch ₁Q ₁₄Positive pulse and IC ₂D ₃Diode VD ₂Through phase inverter I ₆Send effective low level to IC ₃IN end send second BCD data, so carry out back and forth, after five BCD data are finished transmission, IC ₁Q ₁₄The 6th pulse is added to IC ₂CP end, Q ₇Saltus step is a high level, passes through VD ₇, VD ₆, R ₁The locking positive pulse makes the CP end to IC ₁The pulse of sending here does not have effect again.Because Sheffer stroke gate I ₆When the 6th pulse arrived, an end that connects diode was invalid, so the 6th pulse is to IC ₃Encoding transmitting circuit is irrelevant, waits for the collection of next ammeter data thereafter.

D, major-minor power-supply system: transformer is through three groups of voltages of output behind the voltage transformation, and first group is sent 5 volts of voltage VCC in each positive supply part of system behind rectifying and voltage-stabilizing; Second group of 3.7V pulse voltage of sending 50HZ after the diode half-wave rectification forms auxiliary power VDD to charge in batteries; Form at the negative half period discharge network by the stabilivolt triode for the 3rd group, so that prevent the oxidation of accumulator plate.

(2) data acquisition system (DAS)---A ', photo-electric data acquisition keep: optoelectronic switch is installed in the gear drive part of ammeter, making the optical sensor of optoelectronic switch be subjected to light or lose light during the ammeter mechanical motion on the gear every mating plate, thereby obtain interrupted pulse data through delivering to after amplifying or the end of door I1, when preventing optoelectronic switch output positive pulse, 220 volts of outages for some reason of user's power supply, when incoming call, the state of opening according to light, export a unnecessary pulse once more, thereby influence the accuracy of data for collection; Special for this reason with stabilivolt VD, triode 9013, resistance R ₂, R ₃Add to I ₁Sheffer stroke gate is formed outage self-sustaining system.Behind system cut-off, 5 volts of voltages of primary power are in continuous whereabouts, and stabilivolt ends when being 3.6 volts when losing, and the C of triode 9013, the e utmost point are added to or door I ₁State, by the low high-impedance state that becomes; If optoelectronic switch output this moment is high level, and adds to I ₁Or door, output terminal is a high level so, this high level passes through resistance R ₂Feed back to I ₁Another input end, high level is kept.Output as optoelectronic switch is low level, then equally by feedback resistance R ₂Low level is kept.Because I ₁Or door adopts major and minor power supply power supply, thus after primary power loses under the effect of auxiliary power I ₁Pass through R ₂The effect of feedback makes data keep getting off.B ', data storage and processing: by or the door I ₁Output terminal is sent the pulse signal of representing the gear rotation momentum and is added to two decimal system ground and count device IC ₈CPB end, according to the ratio of gear of ammeter gear,, as clock signal, give IC the signal after the frequency division through frequency division is necessarily arranged ₈CPA end represent the decimal system counting of a position electric weight, also logical Qb ₄End is to ten end IC ₇CPB send into carry pulse, like this constantly upwards carry, hundred, kilobit, myriabit, thus make IC ₈To IC ₆The BCD output terminal obtain five four BCD data representing power consumption.IC ₆To IC ₈Producing loss of data when preventing system cut-off, is VCC and auxiliary power VDD power supply and adopt primary power, thus the auxiliary power power supply that has accumulator to provide after primary power is lost.The output of C ', data: IC ₆And IC ₈Five data numbers of it is believed that deliver on three five groups of electronic switches that recklessly pipe is formed, transmit data according to the time sheet respectively by control system select units corresponding, thereby the BCD data are sent on the bus of public data.

Claims

1, a kind of high-altitude ammeter box meter reading instrument, form by the hand-held data acquisition circuit of checking meter display instrument and being attached on the ammeter of high-altitude, it is characterized in that the display instrument of handing of checking meter comprises that desire is measured ammeter encodes that number is put in de-noising and plus-minus is put number (1), formation and coded modulation infrared emission (2) with the address user code of coded signal modulation and emission, receive and show the infrared reception decoding data processing and the demonstration (3) of ammeter measured value, the data acquisition circuit that is attached on the ammeter of high-altitude is made of data acquisition system (DAS) on measured ammeter group common part and the single ammeter, and described common part comprises the generation (A) of infrared signal amplification decode address, data acquisition process (B), coded modulation emission (C), the major-minor power-supply system is formed; Described data acquisition system (DAS) is made up of the output (C ') of photo-electric data acquisition maintenance (A '), data storage and processing (B '), data.

2, ask 1 described high-altitude ammeter box electronic meter reading instrument according to right power, the optoelectronic switch that it is characterized in that gathering the ammeter revolution is installed in the gear drive part of ammeter.

3, high-altitude according to claim 1 ammeter box electronic meter reading instrument is characterized in that the keyboard coding de-noising puts number and plus-minus and put in the number (1) and adopt at BCD scrambler IC ₁By diode VD ₃, VD ₄Produce high-order Q ₄Low 3, by VD ₁, VD ₂Deliver to the D of IC ₀Or D ₁, and obtain complete 4 8421 yards.