CN201138218Y

CN201138218Y - Intelligent liquid flow meter

Info

Publication number: CN201138218Y
Application number: CNU2007201384837U
Authority: CN
Inventors: 张海燕
Original assignee: SHANXI XINYU NEW ELECTRIC CO Ltd
Current assignee: SHANXI XINSHUI YUANJING TECHNOLOGY CO., LTD.
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2008-10-22
Anticipated expiration: 2017-12-28

Abstract

The utility model relates to the field of measurement and control of water conservancy, in particular to an intelligent fluid flowmeter used for measuring and controling water pumped by a water pump. The intelligent fluid flowmeter solves the problems of the high environmental demand, difficult installation, vulnerability of the prior measurement equipment. The intelligent fluid flowmeter comprises a shell body with a control circuit inside. The control circuit comprises a microprocessor CPU, an electric quantity collection circuit and a display interface circuit. The electric quantity collection circuit comprises an electrical energy measurement chip, an electric current and voltage transformer fixed on the power supply circuit of the water pump. The output end of the electric current and voltage transformer is connected with the signal input end of the electrical energy measurement chip. The shell body is provided with a display screen connected with the display interface circuit. The intelligent fluid flowmeter has reasonable structure, and is usable without being limited by the poor environment, which is applicable for irrigation wells, and self-supplied wells in industrial enterprises.

Description

The intelligence liquid flowmeter

Technical field

The utility model relates to water conservancy metering and control field, specifically is the intelligent liquid flowmeter that water pump is drawn water and measures and control.

Background technology

China is a large agricultural country, and agricultural water accounts for more than 70% of total water amount than great, and existing country advocates a water-saving society, and the main battle ground of water saving is on agricultural water.And equipment requirements installation environments such as existing metering water meter and flowmeter must guarantee the straight length of certain distance than higher, and need carry out measures such as antifreeze.But actual conditions are installation requirements that a lot of use occasions all do not reach above metering outfit, are not that metering is inaccurate to making metering outfit, are exactly by silt impact failure, freezing, or by artificial destruction, the spoilage height is difficult to long-play.

Summary of the invention

The utility model requires problems such as high, that installation is difficult, fragile in order to solve existing metering outfit environment for use, and a kind of intelligent liquid flowmeter is provided.

The utility model is to adopt following technical scheme to realize: intelligent liquid flowmeter, comprise the housing that is built-in with control circuit, described control circuit comprises microprocessor CPU, electric quantity acquisition circuit, display interface circuit, the electric quantity acquisition circuit comprises electric energy computation chip, is fixed in electric current, voltage transformer (VT) in the water pump supply line, and the output terminal of electric current, voltage transformer (VT) links to each other with the electric energy computation chip signal input part; Housing is provided with the display screen that links to each other with display interface circuit.During use, by voltage, the current signal in voltage, current transformer monitoring, the collection water pump pump process, and carry out filtration treatment through electric energy computation chip, generate effective electrical energy pulse signal and be transferred to microprocessor CPU, microprocessor CPU is under corresponding software is supported, realize the conversion of the electric weight and the water yield, after display interface circuit on display screen, shown.

Intelligent liquid flowmeter described in the utility model is core with the microprocessor CPU, be connected with the electric quantity acquisition circuit in the corresponding port of CPU, display interface circuit, because each circuit all is formed by connecting by known integrated chip, after the model of used integrated chip is selected, between each integrated chip and integrated chip be known with corresponding annexation between the cpu port, therefore the concrete connection in the internal circuit of this flowmeter, connect such as the correspondence between each integrated chip, some peripheral circuits that each integrated chip operate as normal is required etc., to those skilled in the art are known and easy realizations, therefore, the utility model is not explained in detail these concrete connections, but has provided concrete circuit catenation principle figure in the accompanying drawings.

Compared with prior art, the utility model adopts the full-electronic technical design, directly do not contact with measured medium, in indoor installation, in monitoring water pump pump process, the electric current of real-time change, voltage parameter, microprocessor CPU is under related software is supported, carry out computing in conjunction with parameters such as the efficient of water pump, motor reserve factor, lifts, realize the metering that water pump is drawn water; Therefore still can use more abominable aboveground of condition, fundamentally solve the drawback of existing metering outfit; Through the long-time running test, measuring accuracy can reach 2.5 grades.

The utility model is rational in infrastructure, and is easy to use, not limited by the whether abominable use of environment, is applicable on farming filling well, the factory and enterprise homemade well.

Description of drawings

Fig. 1 is a housing surface structure synoptic diagram of the present utility model;

Fig. 2 is the circuit block diagram of the utility model control circuit;

Fig. 3 is the circuit theory diagrams of the utility model control circuit;

Among the figure: the 1-display screen; 2-work state information pilot lamp; The 3-R232 communication interface; The 4-housing; 5-user card punching district; 6,7-work state information pilot lamp; 8,9-infrared communication interface.

Embodiment

The intelligence liquid flowmeter, comprise the housing 4 that is built-in with control circuit, described control circuit comprises microprocessor CPU, electric quantity acquisition circuit, display interface circuit, the electric quantity acquisition circuit comprises electric energy computation chip, is fixed in electric current, voltage transformer (VT) in the water pump supply line, and the output terminal of electric current, voltage transformer (VT) links to each other with the electric energy computation chip signal input part; Housing 4 is provided with the display screen 1 that links to each other with display interface circuit.

During concrete enforcement, housing 4 adopts ABS engineering plastics watchcase; Display screen 1 below is provided with work state

information pilot lamp

2,6,7 and

infrared communication interface

8,9 on the housing 4; Voltage, current transformer adopt the mutual inductor of embedded 0.1 class precision, and the electric current, the voltage that change in the water pump pump process are gathered; Electric energy computation chip adopts the electric energy computation chip of U.S. import ADE computation chip-ADE7758 model, and electric current, magnitude of voltage are carried out filtration treatment, finally generates effective electrical energy pulse information and exports to CPU; Microprocessor CPU adopts little process chip of the Microchip PIC of company family chip-PIC16F946 model, and intelligent liquid flowmeter is carried out data processing, the comparison of match metering formula, demonstration control or the like; Display screen adopts 128*64LCD liquid crystal display or 4 charactron LED to show that displaying contents should comprise device numbering, total water amount, user's card number, user's water consumption; Clock module adopts 8563 modules, is furnished with 3.6V self-charging lithium battery, and intelligent liquid flowmeter is carried out the clock memory; Described control circuit also comprises communicating circuit and smart card control circuit, and communicating circuit adopts MAX232 serial communication module, supports standard R232 communication interface and infrared communication interface; Housing 4 is provided with the user card punching district 5 of R232 communication interface, the configuration of smart card control circuit, and the smart card control circuit adopts FM1702 read-write card module, and user smart card is carried out reading and writing data.

Under related software is supported, the utility model is except that function of measuring, simultaneously can also realize subscriber management function, can carry out toll administration to user's water, before user's water, brush the subscriber card of having supplemented with money earlier, the intelligence liquid flowmeter is controlled water pump by smart card control circuit identification subscriber card information and is drawn water, and reduces the water yield in the card simultaneously one by one, when the water yield be zero or the user just swipe the card again, close user's water, realize the advance charges function.

Claims

1, a kind of intelligent liquid flowmeter, comprise the housing (4) that is built-in with control circuit, it is characterized in that described control circuit comprises microprocessor CPU, electric quantity acquisition circuit, display interface circuit, the electric quantity acquisition circuit comprises electric energy computation chip, is fixed in electric current, voltage transformer (VT) in the water pump supply line, and the output terminal of electric current, voltage transformer (VT) links to each other with the electric energy computation chip signal input part; Housing (4) is provided with the display screen (1) that links to each other with display interface circuit.

2, intelligent liquid flowmeter according to claim 1 is characterized in that it is the electric energy computation chip of ADE7758 that electric energy computation chip adopts model.

3, intelligent liquid flowmeter according to claim 1 is characterized in that it is little process chip of PIC16F946 that microprocessor CPU adopts model.

4, intelligent liquid flowmeter according to claim 1 is characterized in that described control circuit also comprises communicating circuit and smart card control circuit, and communicating circuit adopts MAX232 serial communication module; The smart card control circuit adopts FM1702 read-write card module, and housing (4) is provided with the user card punching district (5) of RS232 communication interface (3), the configuration of smart card control circuit.

5, intelligent liquid flowmeter according to claim 4 is characterized in that housing (4) is provided with work state information pilot lamp (2,6,7) and infrared communication interface (8,9).