CN1173677A

CN1173677A - Automatic dwelling power consumption data acquisition and logging device

Info

Publication number: CN1173677A
Application number: CN 96104179
Authority: CN
Inventors: 刘永峰; 杨刘生; 朱伟民
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-21
Filing date: 1996-04-03
Publication date: 1998-02-18

Abstract

An automatic acquisition device of energy consumption information for residences is composed of host and a number of detectors attached to the meters of energy consumption. Said detector consists of probe, binary counter, binary encoder, switching circuit and signal sampling circuit. Each detector has a code defined by emcoder. The host sends pulseds to detectors and the value of each counter is increased synchronously with the pulses. When the valve of counter is matched with the code in detector, signal is strobed and combined with probe signal in sampling circuit, and finally input to host. The level signal input to host varies with sampled signal. The host accumulates and processes said variation to obtain the counted values about electric, water and gas consumptions.

Description

Automatic dwelling power consumption data acquisition and logging device

The invention belongs to a kind of device of copying and accepting residential customer power consumption, water consumption, air consumption automatically.

Improvement along with people's living conditions, a large amount of construction of high-rise, centralized residential building, in the past power consumption, water consumption, air consumption with manual metering record, calculating residential customer are far from suitable the sixth of the twelve Earthly Branches, manual metering intensity is big, speed is slow, the computing cycle is long, can not in time regain energy cost, also inconvenient energy management division management.

In view of this, the purpose of this invention is to provide a kind of automatic dwelling power consumption data acquisition and logging device, adopt this device can write down each user's energy consumption automatically, both can improve work efficiency, be convenient to management again.

The objective of the invention is to realize with following technical solution, whole device comprises main frame and several and is installed in detector on user's energy-consuming meter, main frame is 8098 single-chip microcomputers of forming with general 8098CPU, it links to each other with each detector, and send each cycle to detector and have the count pulse that a reset pulse and quantity equate with detector quantity at least, detector comprises probe, counter, coding circuit, on-off circuit, signal sampling circuit, wherein probe is to be made of the magnet of device on the energy-consuming meter rotary part and the static tongue tube that is fixed near rotary part, when magnet forwards to when relative with tongue tube with rotary part, the contact in the tongue tube is subjected to just adhesive of magneticaction.The counter input end of each detector all links to each other with main frame, reset in all counter synchronisation of reset pulse phase, then synchronously with the count pulse number sent in the main frame one-period by meeting two to advance to count, the output terminal of counter connects coding circuit, the binary coding circuit that this coding circuit is cooperatively interacted and formed by resistance number that is connected to counter output and diode number, each detector has a coding of determining, its coding is by resistance, the diode number of coding circuit and cooperate decision.Each coding only responds to a count pulse, promptly have only when the pulse binary counting of counter is consistent with the binary coding of coding circuit, be connected the just conducting of on-off circuit between coding circuit and signal sampling circuit, the electric signal input signal sample circuit that allows coding circuit export, like this in the one-period pulse that main frame sends, the chance that the coding circuit of each detector all once is switched on.Signal sampling circuit is defeated by main frame with the sampled signal of the electric signal of on-off circuit and probe after synthetic, when the contact adhesive in the probe tongue tube, signal sampling circuit output low level signal, when the contact in the probe tongue tube separates, signal sampling circuit output high level signal carries out mould/number conversion and data processing by main frame to the signal from signal sampling circuit.During work, the continuous repetition period of main frame is sent out pulse, counter repeats above-mentioned resetting, counting, according to the probe sampling situation, change low to the outputs level signals of each detector by height or change high variation and accumulate and data processing by main frame, can realize the actual energy consumption counting of main frame each user by low.

Below in conjunction with accompanying drawing the present invention is described in further detail.

Fig. 1 is a principle of the invention block diagram;

Fig. 2 is a kind of physical circuit example of detector;

Fig. 3 is the magnet installation site synoptic diagram of probe;

Fig. 4 is the pulse signal synoptic diagram that main frame sends;

Fig. 5 is antistatic interfered circuit.

With reference to Fig. 1, whole device comprises main frame 1 and several and is installed in detector 2 on user's energy-consuming meter, detector 2 comprises counter 3, coding circuit 4, on-off circuit 5, signal sampling circuit 6 and pop one's head in 7, main frame is 8098 single-chip microcomputers, send each cycle by it to detector and have the count pulse that a reset pulse and quantity equate with detector quantity at least, the counter of each detector is at reset pulse phase synchronous reset, then synchronously with the count pulse number sent in the main frame one-period by meeting two to advance to count, the output of counter links to each other with the binary coding circuit of being made up of resistance and diode, each detector has a coding of determining, when the binary coding of the binary counting of counter and coding circuit is consistent, signal gating then, the electric signal of coding circuit output at this moment be through on-off circuit entering signal sample circuit, is defeated by main frame by signal sampling circuit after will be from the sampled signal of the electric signal of on-off circuit and probe synthetic and carries out mould/number conversion and data processing.

Fig. 2 is mounted in a kind of physical circuit figure of the detector on user's energy-consuming meter, and the host signal line links to each other with detector label E, here, counter 3 adopts integrated package MCI4040, and its 10 pin is a counting end, and 11 pin are reset terminal, 16 pin are power input, Q1～Q12 is an output terminal, and signal wire is through resistance R 3, diode D2, the part that resets that capacitor C 2 constitutes links to each other with 11 pin, through resistance R 4, capacitor C 1 links to each other with 10 pin, and the pulse number of main frame is pressed binary counting.Usually, enter main frame for avoiding unexpected high pressure, be preferably in power input and insert holding circuit, holding circuit 8 is by diode D3 in this example, resistance R 5, and capacitor C 3 and stabilivolt W1 constitute.Illustrated example, counter uses eight output terminals of Q1～Q8, can count 255 pulses of main frame by binary counting, coding circuit 4 is made up of corresponding resistance and the diode that is connected to counter output one by one, eight of counter output terminals in this example, have the permanent connecting resistance R1 of an output terminal except that appointing, all the other seven output terminals are connecting resistance RX or diode DX arbitrarily, but the number of RX and DX number sum constant be 7.According to resistance R X, the conversion that the number of diode DX and RX, DX.R1 are connected Q1～Q8 end points can obtain 255 binary codings, can be to 255 detector codings.The output of coding circuit connects by triode Q1, the on-off circuit 5 that Q2 and resistance R 2 constitute, RX, DX, the end of R1 is connected on respectively on counter output Q1～Q8, and the other end splice grafting of RX is in the base stage of on-off circuit Q1, the anode of DX is connected to the collector of Q1 all the time with R1, as RX representative " 0 ", DX, R1 represents " 1 ", the RX that provides by legend then, DX, R1, arrange: RX, DX, RX, DX, R1, RX, RX, RX, its binary coding is 01011000B, promptly represents 88, also promptly represents detector No. 88.The collector of Q1 connects the base stage of Q2, and the emitter of Q2 is connected on by diode D1 through resistance R 2, on the D1 anode of the signal sampling circuit 6 that light emitting diode L1 constitutes and the line of L1 anode.Probe 7 is made up of magnet NS and tongue tube K, magnet is installed on the rotary part of energy-consuming meter, with the ammeter is the example (see figure 3), can be installed in major diameter transmits on gear 9 or the counter wheel 10 or the turbine disk 11, tongue tube is fixed near the rotary part place, makes the contact in it be subjected to magnetic force adhesive or separation, and the tongue tube contact links to each other with the light emitting diode L1 negative terminal of signal sampling circuit, the output terminal of signal sampling circuit, promptly the negative terminal of diode D1 links to each other with the A/D converter of main frame.When the coding of the counting of counter and coding circuit is inconsistent, this moment, the base stage of Q1 was a high level, current collection is low level very, Q2 ends, the output of on-off circuit no signal, when the counting of counter was consistent with the coding of coding circuit, then the base stage of Q1 was a low level, and current collection is high level very, Q1 ends, and the Q2 conducting, on-off circuit has electric signal input signal sample circuit, is in attracting state as the tongue tube contact of popping one's head in this moment, then the electric signal of on-off circuit output is through L1, K and D1 make that the anode of D1 is a low level, but surpass the forward voltage of D1, what signal sampling circuit was defeated by main frame is low level signal, the tongue tube contact is in released state so, and then the electric signal of on-off circuit output is a high level at the anode of D1, makes main frame obtain high level signal.

Each recurrence interval, each detector is level signal input main frame once all, whole device is to control each detector sampling time with the pulse signal that main frame sends, its pulsed frequency is regulated on demand, generally making pulsed frequency is in the travel frequency of check point more than 2 times, the pulse that main frame sends as shown in Figure 4, each cycle has the count pulse t2 that a reset pulse t1 and quantity equate with detector quantity at least.

For suppressing the signal wire electrostatic interference and avoiding unexpected high pressure to enter main frame, be preferably in and insert antistatic interfered circuit between main frame and detector, antistatic interfered circuit as shown in Figure 5, be by triode Q3, Q4, stabilivolt W2 and corresponding Resistor-Capacitor Unit constitute, two of potentiometer P terminates between power supply and the ground, sliding end connects the base stage of Q4 through resistance R 9, the collector of Q4 links to each other with the Q3 base stage through resistance R 6, capacitor C 4, resistance R 8, stabilivolt W2 is attempted by between Q3 base stage and the ground, so just can guarantee that Q4 has constant base current and collector current in the amplification region, when detector output high level signal, Q4 collector institute power taking stream is little as can to ignore, and Q4 is in state of saturation when vacant state, can suppress electrostatic interference, and R6, W2, R8, the constant voltage and current limiting circuit that C4 constitutes can prevent external unexpected high voltage signal, is unlikely making main frame impaired, thereby guarantee that the emitter follower that Q3 constitutes has a reliable working environment, when inserting antistatic interfered circuit, then the Q4 of antistatic interfered circuit links to each other with detector label E with label E between R6, and the A point of 7 of Q3 emitter and resistance R connects host A/D converter.

Device provided by the invention is installed on the variant energy-consuming meter of ammeter or water meter or gas meter according to detector, can copy and accept the number of degrees of user power utilization, water, usefulness coal gas automatically, is convenient to realize modern management, improves work efficiency.

Claims

1. automatic dwelling power consumption data acquisition and logging device, it is characterized in that it comprises main frame [1] and several and is installed in detector [2] on user's energy-consuming meter, main frame is 8098 single card microcomputers of forming with 8098CPU, it links to each other with each detector, and send each cycle and have the count pulse that a reset pulse and quantity equate with detector quantity at least, detector comprises:

A) probe [7] is made of the static tongue tube [K] that installs the magnet [NS] on the energy-consuming meter rotary part and be fixed near rotary part, when magnet forwards near tongue tube to, and the contact adhesive of tongue tube;

B) counter [3], the count pulse number that main frame is sent in one-period is whenever finished the one-period step-by-step counting and is resetted by meeting two to advance to count, and begins repeat count again;

C) coding circuit [4], the binary coding circuit that cooperatively interacts and form by resistance number that is connected to counter output and diode number;

D) on-off circuit [5], when the step-by-step counting of counter was consistent with the coding of coding circuit, the on-off circuit conducting allowed the output signal of coding circuit be defeated by signal sampling circuit [6];

E) signal sampling circuit [6] is defeated by main frame after will be from the electric signal of on-off circuit and probe sampling signal synthetic and is carried out mould/number conversion and data processing.

2. copy and accept device automatically by the described energy consumption of claim 1, it is characterized in that said counter [3] is integrated package MC14040, have eight output terminals [Q1～Q8], coding circuit [4] is made up of resistance that is connected to counter output and diode, have the permanent connecting resistance of an output terminal [R1] except that appointing, any connecting resistance of all the other output terminals [RX] or diode [DX], but resistance [RX] number and diode [DX] number sum constant be 7.

3. copy and accept device automatically by the described energy consumption of claim 1, it is characterized in that inserting antistatic interfered circuit between said main frame [1] and detector [2], it is by triode [T3, T4], and stabilivolt [W2] and corresponding Resistor-Capacitor Unit constitute.

4. copy and accept device automatically by the described energy consumption of claim 1, it is characterized in that the counting pulse frequency that main frame sends is in the travel frequency of check point more than 2 times.

5. copy and accept device automatically by the described energy consumption of claim 1, it is characterized in that being connected to the holding circuit [8] that constitutes by diode [D3], resistance [R5], electric capacity [C3] and stabilivolt [W1] at the detector power input.

6. copy and accept device automatically by the described energy consumption of claim 1, it is characterized in that said user's energy-consuming meter is ammeter or water meter or gas meter.