CN201731981U

CN201731981U - Water tank leakage alarm

Info

Publication number: CN201731981U
Application number: CN2009202796034U
Authority: CN
Inventors: 许弋
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2009-11-05
Filing date: 2009-11-05
Publication date: 2011-02-02
Anticipated expiration: 2019-11-05

Abstract

The utility model discloses a water tank leakage alarm which consists of a water flow detection sensor, an amplification circuit, a single chip microcomputer, setting keys and a sound-light alarm. The water flow detection sensor is installed at the water inlet of a toilet bowl, detects water flow and generates analog voltage signals which are amplified by the amplification circuit and are connected with the input end of the single chip microcomputer. The setting keys consists of a key S1, a key S2 and a key S3 which are respectively connected with the control port SW1, the control port SW2 and the control port SW3 of the single chip microcomputer. A user can input the upper limits of total flow and continuous water inlet time into the single chip microcomputer in the alarm and stores the upper limits in the single chip microcomputer. The sound-light alarm is connected with the output port of the single chip microcomputer. When the continuous water inlet amount of a water tank exceeds the set upper limit or the continuous water inlet time exceeds the set upper limit, the sound-light alarm gives an alarm to prompt the user to go and check. The alarm has the advantages of water saving, simple structure, convenient use, high practicability and the like.

Description

The radiator leak alarm

Technical field:

The utility model relates to a kind of radiator leak pick-up unit, relates in particular to a kind of simple in structure, reliable, radiator leak alarm that cost is low.

Background technology:

Water closet uses very general in the family, but because quality problems, service time is long or careless; the seepy question of water tank is very serious; though the water yield of leaking is little at every turn, add up, the water inventory of waste is very surprising; the water resources crisis that China faces is serious day by day; water price goes up now, has increased the weight of financial burden to people, in the market except improving waterbox design; also do not have to detect water tank and whether leak, and send the alarm of warning.

Summary of the invention:

The utility model is at the deficiencies in the prior art, and a kind of simple in structure, reliable, radiator leak alarm that cost is low is provided.

For realizing above purpose, the utility model is by the following technical programs:

The radiator leak alarm is made up of current acquisition sensor, amplifying circuit, single-chip microcomputer, setting button, audible-visual annunciator; The current acquisition sensor is installed in the water inlet of water closet, detecting discharge generation analog voltage signal links to each other with the single-chip microcomputer input end after amplifying circuit amplifies, setting button divides S1, S2, three buttons of S3 to link to each other with single-chip microcomputer SW1, SW2, SW3 control mouth respectively, the user is by setting button, can be to the single-chip microcomputer input total flow of alarm inside and the higher limit of continuous flooding time, and be stored in the single-chip microcomputer, audible-visual annunciator links to each other with the single-chip microcomputer output port.

The utility model adopts whole alarm to be installed in the water inlet of water tank, the user can be according to the capacity of own water tank, the time of on alarm, setting the upper limit of warning flow and continuing to intake, the current acquisition sensor detects the discharge that enters water tank, in a single day single-chip microcomputer detects water inlet into water, just flooding time is carried out timing, the inflow continuous when water tank surpasses the upper limit of setting, when perhaps flooding time surpasses setting value continuously, illustrate that there is drainage in water tank, audible-visual annunciator can send warning, goes before the prompting user to check that this warning utensil has using water wisely, simple in structure, advantage such as convenient and practical.

Description of drawings:

Fig. 1 is the utility model frame principles figure;

Fig. 2 is the utility model integrated circuit figure;

Fig. 3 is the utility model water flow sensing unit input amplifying circuit figure;

Fig. 4 is the utility model single chip circuit figure;

Fig. 5 sets key circuit figure for the utility model;

Fig. 6 is the utility model sound and light alarm circuit figure;

Embodiment:

As shown in Figure 1 and Figure 2, the radiator leak alarm is made up of current acquisition sensor 1, amplifying circuit 2, single-chip microcomputer 3, setting button 4, audible-visual annunciator 5; Current acquisition sensor 1 is installed in the water inlet of water closet, detection enters the discharge of water tank, output terminal at sensor produces the faint analog voltage signal that has definite funtcional relationship with discharge, after 2 pairs of signals amplifications of amplifying circuit, be input to single-chip microcomputer 3 control cores, this simulating signal is converted to digital signal by 10 A/D convertor circuits that control core inside comprises earlier, the control program maintenance data integrated filter that single-chip microcomputer 3 is built-in, the data tracking algorithm is handled digital signal, draw concrete discharge numerical value, simultaneously, in a single day single-chip microcomputer 3 detects water inlet into water, just flooding time is carried out timing, the high alarm setting data of total inflow and continuous flooding time and controller internal reservoir compare, if numerical value exceeds standard, the light emitting diode of sound light alarming circuit is lighted, and sends the indication of reporting to the police; The normally opened contact closure of relay J T1, alarm speaker sends chimes of doom; If total inflow and continuously flooding time do not exceed standard, in case water inlet stops, single-chip microcomputer is just removed the total inflow of this statistics and flooding time data continuously, adds up again when having detected into water next time.

As shown in Figure 3, current acquisition sensor 1 is connected on the JP1 socket, be installed in the water inlet of water closet, current acquisition sensor 1 detects the discharge that enters water tank, and the voltage signal of generation and discharge direct ratio is because signal is fainter, need be amplified with amplifying circuit 2, amplifying circuit 2 adopts high speed amplifier OP07 to form, after amplifying, and the control mouth RA1 of signal input single-chip microcomputer 3.

As shown in Figure 4, the control core adopts novel PIC16F873A single-chip microcomputer 3, inside has comprised 8 path 10 position A/D convertor circuits, with the analog signal conversion of amplifying circuit 2 outputs is digital signal, handle by processing unit, the EEPROM program storage of single-chip microcomputer 3 inside the is built-in control program of alarm, control program maintenance data integrated filter, data tracking algorithm are handled digital signal, draw concrete discharge numerical value; Simultaneously, when having detected current and passed through sensor, the solid stream of water time is carried out timing, compare with the higher limit of the total flow that stores and the higher limit of continuous flooding time again, if total flow or continuous flooding time surpass higher limit, then produce control signal corresponding, drive the warning circuit that single-chip microcomputer 3 is connected.

As shown in Figure 5, set button 4 and be made up of S1, S2, three buttons of S3, SW1, SW2, SW3 are the control mouth of single-chip microcomputer 3, and the user is by setting button 4, can import the higher limit of total flows and continuous flooding time to the single-chip microcomputer 3 of alarm inside, and be stored among the EEPROM of single-chip microcomputer 3.

As shown in Figure 6, the J3 socket connects loudspeaker, and RC6, RC7 are the control mouth of single-chip microcomputer 3, and when needs were reported to the police, the RC6 of single-chip microcomputer 3, RC7 produced high-level control signal, makes light emitting diode D2 glittering on the one hand; On the other hand, make relay J T1 action, the normally opened contact closure, chimes of doom is sent in the loudspeaker energising.

The utlity model has the advantages such as simple in structure, that hardware cost is cheap, can be used as the accessory kit of water closet, easy for installation, can be applied to family, hotel, reliable operation, real-time is good, has great promotional value.

Claims

1. the radiator leak alarm is made up of current acquisition sensor, amplifying circuit, single-chip microcomputer, setting button, audible-visual annunciator; It is characterized in that: described current acquisition sensor is installed in the water inlet of water closet, detecting discharge generation analog voltage signal links to each other with the single-chip microcomputer input end after amplifying circuit amplifies, set button and divide S1, S2, three buttons of S3 to link to each other with single-chip microcomputer SW1, SW2, SW3 control mouth respectively, audible-visual annunciator links to each other with the single-chip microcomputer output port.