CN2556607Y

CN2556607Y - IC card intelligent water meter controller

Info

Publication number: CN2556607Y
Application number: CN 02238311
Authority: CN
Inventors: 余小燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2003-06-18
Anticipated expiration: 2012-06-28

Abstract

The utility model relates to an IC card intelligent water meter controller, which is characterized in that: the utility model comprises a CPU with a watchdog EEPROM circuit inside, a flow measurement input interface, an IC card interface circuit, a voice cue circuit, an magnet interference resistant signal input interface, an under-voltage detection circuit, a valve control signal output interface and an LED display interface, etc., wherein, the CPU can output control signals for closing a rising valve and a water pump and display the control signals through an LED display device based on information of strong magnetic interference, under-voltage, zero residual consumption data of an IC card, leakage of a water supply system of the users, etc.

Description

IC-card intellectual water meter controller

Technical field

The utility model relates to a kind of water meter measurement charging device, particularly a kind of water meter measurement charge and display control unit.

Background technology

Present domestic domestic water supply and group's water adopt the traditional mechanical water meter measurement basically, the mode of manually registering one's residence and tabling look-up.Along with being gradually improved of urban modernization management, charge after the first water of Cai Yonging for many years, the behindhand type of manual metering causes human and material resources, temporal waste to administrative authority in addition, and work efficiency is also very low.The IC-card technology is utilized the IC-card intellectual water meter by promotion and application widely in recent years, can finish functions such as automatic management, prepayment water rate, also is convenient to adopt advanced microelectric technique and the supporting application of microcomputer to form complete water metering payment management system.Described IC-card intellectual water meter is except that comprising electric control valve, digital water meter, importantly should have the multi-functional IC-card intellectual water meter controller of a practicality.

Summary of the invention

IC-card intellectual water meter controller described in the utility model can provide the intellectual water meter meterage and the display device of the anti-float charging function of a kind of antimagnetic, anti-tampering, thief-proof, undervoltage warning, overdraw function, voice suggestion and accumulator.

IC-card intellectual water meter controller described in the utility model comprises power interface J1 and mu balanced circuit, display interface J2, water meter interface J3, voice suggestion interface J4 and speech chip, electric butterfly valve control interface J5, wire jumper end J6, J7, download interface J8, J9, water pump control interface J10, IC-card chip, trigger and central processing unit; Described electric butterfly valve control interface J5 comprises power end 1,2,3,4 pin that are connected with the mu balanced circuit of this controller, can to be provided with in this device with electric butterfly valve in the charge in batteries that is provided with, J5 also comprises the control electric butterfly valve switching signal end that is connected by amplifying circuit with central processing unit control signal output ends 15 pin, i.e. 6 pin of J5; 3,4 pin among the described display interface J2 are the water meter count value output terminal of central processing unit, it connects a display device, 5 pin of interface J2 are the reset terminal of central processing unit, 6,7 pin of interface J2 show output terminal for the switch valve state, they are connected with 15 pin of the control signal output ends of central processing unit by triode Q4, Q3 respectively, 8 pin of interface J2 are switch valve control signal end, and 1,2 pin of interface J2 are power end; The switch valve control signal end of described interface J10 is connected with control end 12 pin of central processing unit by an amplifying triode Q3; Described interface J3 comprises two sample count end 2,3 pin, waterproof watch magnetic induction signal end, wherein two sample count ends are connected with the corresponding end of wire jumper end J6, J7 respectively, and waterproof watch magnetic induction signal end is connected with the D end of trigger U2B by an amplifying triode; 4 pin of described wire jumper end J6 and 2 pin of J7 connect R, the S end of another trigger U2A respectively, and the Q output terminal of this trigger U2A is by 5 pin of isolation bipass interface J2 and reset terminal 1 pin of central processing unit; 9 pin of the CLK termination IC-card chip of described trigger U2B, 11 pin of R termination central processing unit and 5 pin that meet J6, the power supply gating signal of Q end output IC-card chip is by working on power of switching tube Q3 control IC-card; 8 pin of the non-termination central processing unit of Q and connect 7 pin of central processing unit by isolating diode; The D end of described trigger U2B connects 7 pin of central processing unit by an isolating diode; 2,3,7,8 pin of described IC-card chip connect central processing unit data input pin 18,16,17,19 pin, after reading in the IC-card load value data, make the signal of opening of interface J10, J5 delivery valve, pump; 1 pin of described interface J1 is connected with the chip that resets, and 2,3 pin are connected with the reset terminal of central processing unit with interface J9; Interface J9 with in be connected with 17,18,19 pin of processor.

11 pin of the central processing unit of aforesaid IC-card intellectual water meter controller are formed voice warning circuit by the speech chip amplifying circuit with interface J4 and are connected with one, and provide trigger pip for it.

The middle broken ends of fractured bone 7 pin of the central processing unit of aforesaid IC-card intellectual water meter controller are connected with the output terminal of pressure detecting device in by isolating diode respectively with input end 9 pin; When voltage during less than threshold values, 12,15 pin of central processing unit output noble potential control signal is closed interface J10, J5 control water pump, electric butterfly valve.

Establish the central processing unit of house dog eeprom circuit in IC-card intellectual water meter controller described in the utility model adopts, simplified periphery circuit design, improved system reliability.Adopt the sample circuit of shake, guaranteed the accuracy of metering, reliability.This device has anti-magnetic interference, thief-proof, under-voltage, wrong way alarm, data power down hold function; This device also can be provided with the overdraw function, and when residue consumption number was zero, the semi-closure electrically operated valve inserted IC-card once more the user automatically, allowed a certain amount of water of overdraw.This device can automatically shut down electric control valve when strong magnetic interference occurring, suspend and supply water; When drainage appears in user's water system, and discharge after the time of setting, can be closed solenoid valve automatically and stop to supply water during greater than minimum flow.

Description of drawings

Fig. 1 is the circuit theory diagrams of IC-card intellectual water meter controller described in the utility model;

Embodiment

Particular circuit configurations of the present utility model is seen accompanying drawing:

Power unit: to J1, through cowling panel B1 rectification, again through adjustable voltage stabilizer U7 (LM338) voltage stabilizing, after D8 isolated, a part was given charge in batteries in the electric butterfly valve through 3,4 pin of J5 to civil power after the transformer step-down.A part 1,2 pin by J5 after D9 isolates are given charge in batteries in the controller, and by feed system power supply after U8 (7805) voltage stabilizing.

Antimagnetic interference sections: when the people disturbs the water meter sampled signal for holding magnet, antimagnetic tongue tube adhesive also produces high level signal, a look-at-me of 7 pin of giving U1 after J3 is anti-phase to Q6, this moment, 13 pin of U1 were exported high level, closed to the 6 foot control system electric butterfly valves of J5 after Q7, Q8 buffering.The control signal of 13 pin is sent the on off state of display board indicator valve to 6,7 pin of J2 after Q4, Q5 handle.The 12 pin output low level Q5 of U1 cut off the water to J10 control water pump.

Metering section: with double dry-reed pipe sampling (being made as A and B).In the water meter operational process, when sensing magnet leaned on into the A reed pipe, this tongue tube adhesive (B tongue tube not can adhesive) produced high level signal, and by J3 and J6 reset flip-flop U2A.When sensing magnet leans on into the B reed pipe, this tongue tube adhesive (A tongue tube not can adhesive) produces high level signal, and by J3 and J7 set flip-flop U2A, this moment, look-at-me of 6 pin that high level is given single-chip microcomputer U1 was exported in the 1 pin upset of U2A, after U1 detects this pulse, correspondingly reduce by a measurement unit.When the surplus water reason was reduced as zero, U1 sends signal made valve pass, pump stop (described with two).Because of some water meter has only a metering tongue tube, thus wire jumper J6, J7 be provided with, to adapt to differently sample mode.

IC-card interface section: U1 reads and writes IC-card by deck IC_CARD.The deck contact becomes disconnection by closure behind user's plug-in card, and produce one from low to high skip signal to 11 pin of U2B, make 12, the 13 pin upset of U2B, 13 pin output high level makes the Q3 conducting supply with the IC-card power supply, 12 pin output low levels are given look-at-me of 7 pin of U1, U1 judges whether the plug-in card signal by the level state that detects 8 pin, sending instruction then judges and read-write IC-card by 16,17,18,19 pin of U1, when IC-card for effectively blocking and when data are arranged, IC sends signal and makes that valve leaves, pump working.

The voice suggestion part: when at the bottom of the surplus water during in a certain value and at the bottom of the voltage when not enough, 13, the 14 pin output high level of U1 triggers 11,10 pin of speech chip U4, and the 7 pin output voice signal of U4 amplifies the back through U5 and arrives loudspeaker by J10.

Voltage detecting and monitor portion: voltage-level detector U3 output low level was given look-at-me of U1 when 7805 input voltage was lower than 10V, the level state that U1 detects 9 pin judges whether low pressure, and all data are saved in EEPROM in the sheet, and send signal and make that valve closes, pump stops.Monitoring chip U6 powers on for U1 provides reliably, power-off reset, in case program fleet.

2 pin of display part: U1 are exported high and low level and are made Q1, Q2 conducting or by with control display board power supply, 3, the 16 foot control system video data ground transmission of U1.All video datas link to each other with display board by J2 with state.

Program download interface part: because of U1 (AT90S2313) memory under program is online programmable FLASH (clashing number of times 1000 times), so be provided with download interface J9 and wire jumper J8.

Claims

1. IC-card intellectual water meter controller, it is characterized in that: this controller comprises power interface J1 and mu balanced circuit, display interface J2, water meter interface J3, voice suggestion interface J4 and speech chip, electric butterfly valve control interface J5, wire jumper end J6, J7, download interface J8, J9, water pump control interface J10, IC-card chip, trigger and central processing unit; Described electric butterfly valve control interface J5 comprises power end 1,2,3,4 pin that are connected with the mu balanced circuit of this controller, can be to the charge in batteries that is provided with in this device and the electric butterfly valve, J5 also comprises the control electric butterfly valve switching signal end that is connected by amplifying circuit with central processing unit control signal output ends 15 pin, i.e. 6 pin of J5; 3,4 pin among the described display interface J2 are the water meter count value output terminal of central processing unit, it connects a display device, 5 pin of interface J2 are the reset terminal of central processing unit, 6,7 pin of interface J2 show output terminal for the switch valve state, they are connected with 15 pin of the control signal output ends of central processing unit by triode Q4, Q3 respectively, 8 pin of interface J2 are switch valve control signal end, and 1,2 pin of interface J2 are power end; The switch valve control signal end of described interface J10 is connected with control end 12 pin of central processing unit by an amplifying triode Q3; Described interface J3 comprises two sample count end 2,3 pin, waterproof watch magnetic induction signal end, wherein two sample count ends are connected with the corresponding end of wire jumper end J6, J7 respectively, and waterproof watch magnetic induction signal end is connected with the D end of trigger U2B by an amplifying triode; 4 pin of described wire jumper end J6 and 2 pin of J7 connect R, the S end of another trigger U2A respectively, and the Q output terminal of this trigger U2A is by 5 pin of isolation bipass interface J2 and reset terminal 1 pin of central processing unit; 9 pin of the CLK termination IC-card chip of described trigger U2B, 11 pin of R termination central processing unit and 5 pin of interface J6, the power supply gating signal of Q end output IC-card chip is by working on power of switching tube Q3 control IC-card; 8 pin of the non-termination central processing unit of Q and connect 7 pin of central processing unit by isolating diode; The D end of described trigger U2B connects 7 pin of central processing unit by an isolating diode; 2,3,7,8 pin of described IC-card chip connect central processing unit data input pin 18,16,17,19 pin, after reading in the IC-card load value data, make the signal of opening of interface J10, J5 delivery valve, pump; 1 pin of described interface J1 is connected with the chip that resets, and 2,3 pin are connected with the reset terminal of central processing unit with interface J9; Interface J9 with in be connected with 17,18,19 pin of processor.

2. a kind of IC-card intellectual water meter controller as claimed in claim 1: it is characterized in that: 11 pin of described central processing unit are formed voice warning circuit by the speech chip amplifying circuit with interface J4 and are connected with one, and provide trigger pip for it.

3. a kind of IC-card intellectual water meter controller as claimed in claim 1: it is characterized in that: the middle broken ends of fractured bone 7 pin of described central processing unit are connected by the output terminal of isolating diode with a voltage-level detector respectively with input end 9 pin; When voltage during less than threshold values, 12,15 pin of central processing unit output noble potential control signal, name interface J10, J5 control water pump, electric butterfly valve are closed.