CN2273850Y - Computerized volume flow meter of water - Google Patents
Computerized volume flow meter of water Download PDFInfo
- Publication number
- CN2273850Y CN2273850Y CN 95216998 CN95216998U CN2273850Y CN 2273850 Y CN2273850 Y CN 2273850Y CN 95216998 CN95216998 CN 95216998 CN 95216998 U CN95216998 U CN 95216998U CN 2273850 Y CN2273850 Y CN 2273850Y
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- China
- Prior art keywords
- circuit
- pin
- microprocessor
- cpu
- way switch
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Abstract
The utility model relates to a computerized flow meter of water, which is composed of a power supply circuit, a sampling circuit, a precise rectifying circuit, a lift head testing circuit, a double-integral A/D changeover circuit, a code switch, and an interface circuit, a microprocessor and a water flow displaying circuit of the code switch, and a work indicating circuit. The utility model is a water flow meter designed for being matched with the implementation of the water law; the water flow meter adopts indirect measurement, is suitable for the national conditions of China, and is controlled by a computer. The utility model has the characteristics of high reliability, convenient installation, easy maintenance, low cost, visual display, permanent data reservation, low running cost and high testing precision.
Description
The utility model relates to a kind of watermeter, relates in particular to a kind of computer control watermeter.
For cooperating the enforcement of water law, need a kind of measuring apparatus of suitable national conditions.All there is following common fault in various flowmeters of Cun Zaiing in the market: (1) installs inconvenience: most of flowmeter need be contained on the trunk line, and this brings difficulty for the user who lacks qualified technical personnel, and does not allow to construct on trunk line the user who has in the city; (2) part is not contained in and constructs on the trunk line, but cost is too high, as ultrasonic flow meter, needs 500-1000 unit/platform; (3) maintenance requirement height to the environmental baseline harshness, damages easily, and power consumption is high.
The purpose of this utility model is: overcome the prior art defective, provide a kind of easy for installation, safeguard computer watermeter simple, that cost is low, reliability is high, power consumption is low, the life-span is grown.
The utility model is by power circuit, sample circuit, precise rectification circuit, lift testing circuit, double integration A/D change-over circuit, and eight parts such as code switch and interface circuit thereof, microprocessor CPU and water yield display circuit are formed.Power circuit is exemplary voltages and constant-current source circuit, provide+5 volts ,-5 volts ,+12 volts of voltages and 12 milliamperes of electric currents, it is characterized in that taking from motor 380 volt power supplys supporting with water pump, make watermeter power supply and pump working synchronous.Sample circuit is finished the voltage and current sampling, and all adopts precision resistor to adjust.Precise rectification circuit carries out precision rectifying and the shared circuit of both precision rectifyings with voltage, the current sampling of sample circuit output, delivers to the double integration A/D change-over circuit then.The lift testing circuit adopts 12 milliamperes of constant current source power supplies, the output that suspends, and adopt difference to amplify, deliver to the double integration A/D change-over circuit again and carry out the A/D conversion.The effect of double integration A/D change-over circuit is to convert lift, voltage, current sampling signal to digital signal to deliver to the CPU microprocessor again.The effect of code switch and interface circuit thereof is to utilize toggle switch to insert lift radix and pump efficiency, and user's versatility is strengthened greatly.Microprocessor carries out intelligent computing by software after after testing again, sends one ton of water signal of having good luck automatically, and signal promotes counter through driving circuit and has good luck.
The utility model also can be set up a working indicating, declares measurement of discharge with timing, and the operate as normal of indication microprocessor.
The utility model is to be the auxiliary products that advance water law comprehensively to implement rapidly, and it has the following advantages:
(1) high reliability: under normal operating position, generally can not break down, and can use for a long time;
(2) easy for installation: only need to insert this device and get final product, can under situation about not stopping production, insert this watermeter with three power leads of water pump necessary electromotor, quite popular with users;
(3) cost is low: compare with traditional flowmeter, its price at double and even tens times ground descend all can accept users:
(4) easy maintenance: do not need regularly to drive down and detect on-the-spot the adjustment;
(5) intuitive display: adopt message register, thereby have permanent maintenance data characteristic;
(6) operating cost is low, and adaptability is strong
Fig. 1: be electric theory diagram of the present utility model:
Fig. 2: be the circuit diagram of sample circuit of the present utility model:
Fig. 3: be the circuit diagram of the utility model precise rectification circuit:
Fig. 4: be the circuit diagram of the utility model double integration A/D change-over circuit;
Fig. 5: be the circuit diagram of the utility model code switch and interface circuit thereof;
Fig. 6: be the circuit diagram of the utility model water yield display circuit:
Fig. 7: be the circuit diagram of the utility model working indicating;
Fig. 8: be the circuit diagram of the utility model lift testing circuit.
Below in conjunction with accompanying drawing the utility model is elaborated.The utility model is made up of eight parts such as power circuit, sample circuit, precise rectification circuit, lift testing circuit, double integration A/D change-over circuit, code switch and interface circuit thereof, microprocessor CPU and water yield display circuit.Power circuit adopts exemplary voltages and constant-current source circuit, provide+5 volts ,-5 volts ,+12 volts of voltages and 12 milliamperes of electric currents, supply voltage is taken from motor 380 volt power supplys supporting with water pump, again through the power transformer conversion, adopt diode rectification and integrated regulator to obtain, therefore not be used in the scene and draw 220 volts power supply, made things convenient for the user, and realized that power supply and pump working are synchronous.Sample circuit is by transformer B, current transformer L, comparer IC
1, IC
2, with the door IC
3And other Resistor-Capacitor Unit composition, voltage sampling U sample is obtained through power transformer B, through resistance R
3, potentiometer R (divide two the tunnel output, the one road delivers to the multi-way switch IC of precise rectification circuit
4Pin 2 carries out precision rectifying, and another road is delivered to and door IC
3Current sampling work is exported through current transformer L by the motor working current, through potentiometer R
2Convert voltage, one road to and deliver to the multi-way switch IC of precise rectification circuit
4Pin 4 carries out precision rectifying, and another road is delivered to and door IC
3, voltage, current sampling signal warp and door IC
3Produce phase waveform, deliver to microprocessor CPU again.Precise rectification circuit is by multi-way switch IC
4, the four high guaily unit integrated circuit (IC)
5In two amplifier unit and other Resistor-Capacitor Unit constitute, pin 15, the pin 14 of microprocessor CPU are connected to multi-way switch IC respectively
4Pin 9, pin 10, under software cooperates,, open multi-way switch IC in turn by microprocessor CPU output control signal
4Voltage sampling signal pin 2 or current sampling signal 4 pin, voltage, shared this precise rectification circuit of current sampling, all through pin output in 3 minutes two tunnel, the one tunnel does debugging detects usefulness, the one road delivers to the multi-way switch IC of double integration A/D change-over circuit
6Pin 2 carries out the A/D conversion.The lift testing circuit is made up of pressure transducer F, typical differential amplifier circuit, and sensor F is by 12 milliamperes of constant current source power supplies, and the multi-way switch IC in the double integration A/D change-over circuit is delivered in the output that suspends, and the amplification of employing balanced type difference again
6Pin 5.Be serially connected with resistance R respectively at sensor F two output terminals
4, R
7To ground,, improved its accuracy of detection greatly to eliminate common-mode signal.The double integration A/D change-over circuit is by multi-way switch IC
6, with the door integrated circuit (IC)
3One constitute multi-way switch IC with door and other Resistor-Capacitor Unit
6Control input end pin 9, pin 11, the pin 10 that pin 10 connects microprocessor CPU respectively, pin 4 series resistor R
5To potentiometer R
6The adjustable side, potentiometer R
6One termination-5 volt power supply, the other end is connected to ground, converts digital quantity warp and door IC to through A/D
3Pin 11 is delivered to microprocessor CPU pin 2, potentiometer R
6Select for use precision resistor to adjust, strengthened the adaptability of calibration greatly, improved precision, so the product versatility strengthens greatly.Code switch and interface circuit thereof are by two toggle switch P
3, P
4, two bidirectional drive IC
7, IC
8Form toggle switch P
3, P
4Pin 1-8 meet bidirectional drive IC respectively
7, IC
8Pin 18-11, through bidirectional drive IC
7, IC
8The data bus of microprocessor CPU is delivered in output.Water yield display circuit is by two triode T
1, T
2The driving circuit sum counter T that constitutes with Resistor-Capacitor Unit forms, and microprocessor CPU is exported the signal of having good luck by pin 1, delivers to counter T counting through driving circuit.Counter T adopts message register to make water yield video data directly perceived, and permanent reservation.Working indicating is by triode T
3, LED and attached resistive element constitute, and provides triode T by microprocessor CPU pin 3
3Base signal, LED are the cycle flicker, declare measurement of discharge with timing, and the indication microprocessor CPU is working properly.
Multi-way switch IC of the present utility model
4, IC
6Select multi-way switch integrated circuit 4052 for use, the four high guaily unit integrated circuit (IC)
5Select 084 for use, the microprocessor CPU model is 8032, bidirectional drive IC
7, IC
8Model is 245.
Claims (5)
1, a kind of computer watermeter is characterized in that: by power circuit, eight parts such as sample circuit, precise rectification circuit, lift testing circuit, double integration A/D change-over circuit, code switch and interface circuit thereof, microprocessor and water yield display circuit are formed.
2, computer watermeter according to claim 1 is characterized in that:
(2.1) power circuit adopts exemplary voltages and constant-current source circuit, provide+5 volts ,-5 volts ,+12 volts of voltages and 12 milliamperes of electric currents, supply voltage is taken from motor 380 volt power supplys supporting with water pump, again through the power transformer conversion, adopts diode rectification and integrated regulator to obtain;
(2.2) sample circuit is by transformer (B), current transformer (L), comparer (IC
1, IC
2), with the door (an IC
3) and other Resistor-Capacitor Unit composition, voltage sampling U sample is obtained through power transformer (B), through resistance (R
3), potentiometer (R
1) divide two tunnel outputs, the one road delivers to the multi-way switch (IC of precise rectification circuit
4) pin 2, carry out precision rectifying, another road is delivered to and door (IC
3); Current sampling is exported through current transformer (L) by the motor working current, through potentiometer (R
2) convert voltage to, the one road delivers to the multi-way switch (IC of precise rectification circuit
4) pin 4, carry out precision rectifying, another road is delivered to and door (IC
3), voltage, current sampling signal warp and door (IC
3) produce phase waveform, deliver to microprocessor (CPU) again;
(2.3) precise rectification circuit is by multi-way switch (IC
4), four high guaily unit integrated circuit (IC
5) in two amplifier unit and other Resistor-Capacitor Unit constitute, the pin 15 of microprocessor (CPU), pin 14 is connected to multi-way switch (IC respectively
4) pin 9, pin 10, under software cooperates,, open multi-way switch (IC in turn by microprocessor (CPU) output control signal
4) voltage sampling signal pin 2 or current sampling signal pin 4, voltage, shared this precise rectification circuit of current sampling, all through pin output in 3 minutes two tunnel, the one tunnel does debugging detects usefulness, the one road delivers to the multi-way switch (IC of double integration A/D change-over circuit
6) pin 2, carry out the A/D conversion;
(2,4) lift testing circuit is made up of pressure transducer (F), typical differential amplifier circuit, and sensor (F) is by 12 milliamperes of constant current source power supplies, and the multi-way switch (IC in the double integration A/D change-over circuit is delivered in the output that suspends, and the amplification of employing balanced type difference again
6) pin 5;
(2.5) the double integration A/D change-over circuit is by multi-way switch (IC
6), with door integrated circuit (IC
3) one hinder objective element with door and other and constitute multi-way switch (IC
6) control input end pin 9, pin 10 connect pin 11, the pin 10 of microprocessor (CPU), pin 4 series resistor (R respectively
5) to potentiometer (R
6) adjustable side, potentiometer (R
6) termination-5 volt power supply, the other end is connected to ground, the digital quantity that converts to through A/D through and door (IC
3) pin 11 delivers to microprocessor (CPU) pin 2, potentiometer (R
6) select for use precision resistor to adjust;
(2.6) code switch and interface circuit thereof are by two toggle switch (P
3, P
4), two bidirectional drive (IC
7, IC
8) form toggle switch (P
3, P
4) pin 1～8 meet bidirectional drive (IC respectively
7, IC
8) pin (8～11, through bidirectional drive (IC
7, IC
8) output delivers to the data bus of microprocessor (CPU);
(2.7) water yield display circuit is by two triode (T
1, T
2) and hinder driving circuit sum counter (T) composition that objective element constitutes, microprocessor (CPU) is exported the signal of having good luck by pin 1, delivers to counter (T) counting through driving circuit, counter (T) employing message register;
3, computer watermeter according to claim 1 and 2 is characterized in that: also set up a working indicating, it is by triode (T
3), light emitting diode (LED) and attached resistive element constitute, and provides triode (T by microprocessor (CPU) pin 3
3) base signal, light emitting diode (LED) is declared measurement of discharge for the cycle flicker with timing, and indication microprocessor (CPU) is working properly;
4, computer watermeter according to claim 2 is characterized in that: the sensor in the lift testing circuit (F) two output terminals are serially connected with resistance (R respectively
4, R
7) to ground, to remove common-mode signal;
5, according to claim 2 or 4 described computer watermeters, it is characterized in that: potentiometer (R in the sample circuit
1, R
2) be precision resistor;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95216998 CN2273850Y (en) | 1995-07-14 | 1995-07-14 | Computerized volume flow meter of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95216998 CN2273850Y (en) | 1995-07-14 | 1995-07-14 | Computerized volume flow meter of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273850Y true CN2273850Y (en) | 1998-02-04 |
Family
ID=33865923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95216998 Expired - Fee Related CN2273850Y (en) | 1995-07-14 | 1995-07-14 | Computerized volume flow meter of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273850Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078345A (en) * | 2012-12-31 | 2013-05-01 | 浙江上方光伏科技有限公司 | Photovoltaic grid-connected inverter for preventing inverse power output |
-
1995
- 1995-07-14 CN CN 95216998 patent/CN2273850Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078345A (en) * | 2012-12-31 | 2013-05-01 | 浙江上方光伏科技有限公司 | Photovoltaic grid-connected inverter for preventing inverse power output |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |