CN101140179A

CN101140179A - Household water leakage prevention method and intellectual water meter

Info

Publication number: CN101140179A
Application number: CNA2007101762869A
Authority: CN
Inventors: 张延强; 裘正定; 孙冬梅; 丁晓明
Original assignee: Beijing Jiaotong University
Current assignee: Jiangsu Runfan Technology Co.,Ltd.
Priority date: 2007-10-24
Filing date: 2007-10-24
Publication date: 2008-03-12
Anticipated expiration: 2027-10-24
Also published as: CN100580388C

Abstract

The invention provides a family water-leakproof method and an intelligent water meter which adopts a switch which can judge whether the family continuous water supply time and the continuous water supply amount exceed an appointed threshold value in order to determine whether the water source is cut off. The water meter is only added with a timing unit and a counting unit on the basis of the existing electronic water meter, and has the simple structure and is practical and convenient. The invention has the following main steps: the timing unit calculates the one-time continuous water supply time; the counting unit calculates the one-time continuous water supply amount; respectively judging whether the one-time continuous water supply time and the one-time continuous water supply amount exceed the appointed threshold value, a pipeline is determined as the leakage if any value exceeds the appointed threshold value, and then the water source is cut off immediately; the invention is characterized in that the timing threshold value and the counting threshold value can be set as different leakproof grades according to different family requirements; in addition, the water meter has also a reset switch, and the water meter can be restored to supply water when the fault is eliminated. The invention can meet the requirements of common families preventing the flood.

Description

A kind of family water leak-proof method and intellectual water meter

Technical field

The present invention relates to a kind of family water leak-proof method and intellectual water meter, belong to the life appliance field.

Background technology

Usually aging in the real life, seepage owing to water pipe, break, water swivel is not fastened or forget that leaking appears in reason such as pass, so not only cause water resource waste, water rate to increase, and the entail dangers to buildings causes the house to destroy and property loss, especially in the dwelling house compact district, one place leaks to give and closes on and lower floor's multiple-unit causes damage, and makes troubles for resident's daily life.Such situation is of common occurrence in actual life.Patent (publication number CN1731462A) proposes to adopt analysis water rate of change to judge whether have leakage accident to take place in the family, the deficiency of this method is, can not distinguish long-time water of family (have a bath, wash clothes) and the difference of leaking, and work as in the ascending process of leakage accident and can not make accurate judgment.

Summary of the invention

In order to overcome the deficiency of prior art structure, the problem of being brought in order at utmost to reduce pipe leakage designs a kind of intellectual water meter that can cut off water supply when pipe leakage automatically.The invention provides a kind of family water leak-proof method and intellectual water meter.

The technical solution adopted for the present invention to solve the technical problems is:

The present invention is achieved in that

A kind of family anti-water leakage intelligent water meter, on the basis of existing electronic water meter, increase a timing unit and a flowmeter counting unit, water flow sensing unit connects timing unit and flowmeter counting unit, timing unit is connected logic sum gate with the output of flowmeter counting unit, and the output of logic sum gate connects the valve of electronic water meter by reset switch.

Wherein timing unit is realized by timer, water meter counting unit can be realized by flowmeter counter (being used to calculate the one-time continuous water consumption), also can be (when one time water begins by a storer, write down current water meter value, realize flow rate calculation by the difference of upgrading water meter value and this value) realize.

A kind of family water leak-proof method comprises following steps;

Step 1, when user's water, timing unit and counting unit are worked simultaneously; Timing unit is mainly used in the time of an accumulative total user water, when this time greater than certain threshold value (as 0.5 hour), then be judged to be the generation pipe leakage; Equally, counting unit is mainly used in the volume or weight of an accumulative total user water, when its greater than certain threshold value (as 0.5 cubic metre or 0.5 ton), then be judged to be the generation pipe leakage.

Step 2, judgement in a single day have leakage accident to take place, and then in time cut off metered water supply.

Step 3, opposite, if a water consumption does not reach above-mentioned threshold value, then timing unit and counting unit zero clearing is simultaneously waited for next time and being judged.

Owing to adopt such scheme, when leakage accident takes place, can in time cut off Water supply switch valve, at utmost reduce causality loss.

The present invention relates to by measuring the size of user's tap water continuous service time of length and disposable water consumption, and then judge whether domestic running water water supply occurs leaking, thereby realize cutting off water service automatically when the incident of leaking takes place, prevent the further expansion of leakage accident.

The invention has the beneficial effects as follows: the pipe leakage accident takes place among the manager, and nobody is when (or late into the night) in the family, this intellectual water meter can in time be found and cut off the water supply, and reduces property loss to the full extent; Only needing increases timing and counting unit on existing electronic water meter basis, cost is low, simple and practical; It can be widely used in civilian water service system, provides safety assurance for preventing family's floods.

Description of drawings

Fig. 1 is the anti-water leakage intelligent water meter structure figure of family.

Wherein empty square frame is a conventional domestic electronic water meter structure division among the figure.

Sensor 1; Water meter viewing area 2; Valve 3; Timing unit 4; Flowmeter counting unit 5; Logic sum gate 6; Reset switch 7.

Fig. 2 is family's anti-water leakage intelligent water meter workflow diagram.

The present invention is further described below in conjunction with drawings and Examples.

Embodiment

Embodiment 1:

This intellectual water meter has two functional modules: the anti-module of leaking of flow counting module and family.Wherein, the flow counting module is identical with other electronic water meter, has the function of domestic water flow counting; The anti-module of leaking of family then is made up of single flow timing unit and single flowmeter counting unit.

A kind of family anti-water leakage intelligent water meter, on the basis of existing electronic water meter, increase a timing unit and a flowmeter counting unit, its structure function is as shown in Figure 1: wherein empty square frame is a conventional domestic electronic water meter structure division among the figure, as conventional domestic electronic water meter model is LXSZ-15E～50E intelligence cold water meter, manufacturer: Chongqing Intelligent Water-Meter Co., Ltd.; Water pipe 8 connects the conventional domestic electronic water meter, and the output of valve 3 connects water swivel 9.

Sensor 1 is responsible for the mobile of water is converted into electric signal and calculates its volume, and timing unit 4 and flowmeter counting unit 5 are triggered by sensor 1.In case sensor 1 finds have current to pass through, then triggering

timing unit

4 and 5 work of flowmeter counting unit are same, when sensor 1 finds that current stop, and then triggering

timing unit

4 and 5 zero clearings of flowmeter counting unit.When timing unit 4 or flowmeter counting unit 5 numerical value during greater than the initial setting threshold value, the valve 3 of closing water pipe by logic sum gate 6 stops to supply water.This water meter also has a reset switch 7, and when by logic sum gate 6 triggerings valve 3 being closed, fault can be opened valve 3 normal water supplies by reset switch 7 after getting rid of.

Family is anti-leaks the module implementing procedure as shown in Figure 2:

The first step, this module of initialization makes

timing unit

4 and 5 zero clearings respectively of flowmeter counting unit, and wherein flowmeter counting unit 5 is used to calculate water consumption;

Whether in second step, judging has current to lead to, if having, then timing unit 4 and flowmeter counting unit 5 add up respectively in the pipeline; If no, then change the first step;

In the 3rd step, judge whether timing unit 4 is overtime, if then forwarded for the 5th step to; If not, then changeed for the 4th step;

In the 4th step, judge whether flow surpasses setting threshold, if then changeed for the 5th step; If not, then changeed for second step;

In the 5th step, close water meter valve 3, the supply of cutting off the water supply;

Simultaneously, this water meter also has mode selection switch and reset switch 7.The user can be according to selected different timing threshold value and the flow count threshold of own domestic water situation; The function of reset switch 7 is when the leakage accident switch of cutting off the water supply takes place, the user to the pipeline maintenance after, open the usefulness that switch continues water supply.

Embodiment 2: a kind of family anti-water leakage intelligent water meter, this intellectual water meter has increased the anti-module of leaking of family on the basis of existing electronic water meter, this module is made up of timing unit and counting unit, wherein timing unit is used to calculate the one-time continuous water time, counting unit is used to calculate the one-time continuous water consumption, judge whether to take place pipe leakage by comparing these two numerical value with the size that preestablishes threshold value, when judgement has the generation of leakage, water meter is in time cut off the water supply, play the effect that prevents the floods diffusion, after fault is got rid of, utilize the reset switch 7 of water meter to recover metered water supply.

Described timing unit is realized by single-chip microcomputer or other intelligent cells.

Described counting unit can be made up of the flowmeter counting unit of main water meter, also can adopt a storage unit, and when beginning a water, storage water meter currency is realized by the difference of calculating water meter updating value and this value.

The setting of threshold value in advance can be set different threshold values according to the characteristics of different home.

Claims

1. family's water leak-proof method is characterized in that comprising following steps;

Step 1, when user's water, timing unit and counting unit are worked simultaneously; Timing unit is mainly used in the time of an accumulative total user water, when this time greater than certain threshold value (as 0.5 hour), then be judged to be the generation pipe leakage; Equally, counting unit is mainly used in the volume or weight of an accumulative total user water, when its greater than certain threshold value (as 0.5 cubic metre or 0.5 ton), then be judged to be the generation pipe leakage;

Step 2, judgement in a single day have leakage accident to take place, and then cut off metered water supply;

2. method according to claim 1 is characterized in that described timing unit is a single-chip microcomputer.

3. method according to claim 1 is characterized in that, described counting unit can be made up of the flowmeter counting unit of main water meter, also can adopt a storage unit, when beginning a water, storage water meter currency is realized by the difference of calculating water meter updating value and this value.

4. method according to claim 1 is characterized in that, the setting of threshold value in advance can be set different threshold values according to the characteristics of different home.

5. family's anti-water leakage intelligent water meter, it is characterized in that, a timing unit and a flowmeter counting unit are arranged, sensor connects timing unit and flowmeter counting unit, timing unit is connected logic sum gate with the output of flowmeter counting unit, and the output of logic sum gate connects the valve of electronic water meter by reset switch.