CN201413547Y

CN201413547Y - Low-power radio-frequency card prepayment water meter

Info

Publication number: CN201413547Y
Application number: CN2009200636971U
Authority: CN
Inventors: 周崇文; 单小萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-19
Filing date: 2009-03-19
Publication date: 2010-02-24
Anticipated expiration: 2019-03-19

Abstract

The utility model discloses a low-power radio-frequency card prepayment water meter. In the water meter, a sensor, a single chip machine and a valve are additionally mounted on a counter of a mechanical water meter. The low-power radio-frequency card prepayment water meter is characterized in that card reading adopts an awakening mechanism to significantly reduce the power consumption of the watermeter in a static state; specifically, an induction coil is connected in series with a tongue tube electronic switch, and a radio-frequency card is provided with a Nd-Fe-B magnet steel induction element; the valve realizes opening and closing through the relative rotation of an upper and a lower friction plates of the valve, so that the influence of water pressure to the valve is restricted to friction force; and a mechanical sealing fixed ring, a mechanical sealing movable ring and an offsetting spring form a mechanical sealing device of a valve rod, so that the exposed position of the valverod can not leak water. The water meter has low power consumption, quiescent current is smaller than or equal to 3 milliampere; the adoption of the mechanical valve greatly reduces required current of a switch valve to improve the reliability of the switch valve in the condition of high water pressure and prolong the service life of a dry battery; and the problem in sealing caused by the valve rod driving the valve is solved.

Description

A kind of low-power consumption radio-frequency card prepay water meter

Technical field

The utility model relates to a kind of low-power consumption radio-frequency card prepay water meter.

Background technology

Mechanical water meter is widely used and has for many years, has and can dominate the market for the discharge prepayment metering product of the generally accepted electromechanical integration of masses but lose so far, traces it to its cause, and so what time to be nothing but: one, and the power attenuation when static seldom reduces; Its two, in the serviceable life that the pressure of grid changes and existing valve mechanism had both reduced dry cell, also reduced the reliability of a whole set of products; Its three, the dynamic seal (packing) problem of valve rod fails to solve up hill and dale.

Summary of the invention:

The purpose of this utility model, will provide exactly can be for practical a kind of low-power consumption radio-frequency card prepay water meter, and it is added and adopts micro-power device and circuit by meeting the structural design of mechanical dynamic principle fully, has overcome above-mentioned three big difficult points preferably.

The so-called a kind of low-power consumption radio-frequency card prepay water meter of the utility model, it is the counter based on mechanical water meter, has installed sensor, single-chip microcomputer and valve on counter additional, it is characterized in that:

1. the employing wake-up mechanism of swiping the card is serially connected with tongue tube electronic switch 8 particularly exactly on inductive coil 7, Nd-Fe-B magnet steel sensing device 13 then is housed on radio-frequency card 18 simultaneously;

2. valve is the purpose that reaches open and close by means of the relative rotation between the friction disc 12 under valve upper friction plate 11 and the valve;

3. be set with mechanical sealing linkage ring 10 on valve rod 14, encircle 9 surely and be provided with the mechanical seal that is complementary with described mechanical sealing linkage ring 10 in valve body 15, mechanical sealing linkage ring 10 bottoms add back-moving spring 16 again, thereby constitute the mechanically-sealing apparatus of valve rod 14.

The beneficial effects of the utility model: adopted wake-up mechanism owing to swipe the card, this radio-frequency card water meter quiescent current is smaller or equal to 3 μ A, than the radio-frequency card water meter that does not have Rouser 10 μ A low in energy consumption; The key point of valve design is that hydraulic pressure is only limited to friction force to the influence of valve, has not only greatly reduced the needed electric current of controlled valve, has improved the reliability of controlled valve under high hydraulic pressure environment, has prolonged the serviceable life of dry cell simultaneously; Decide the sealing problem that brings when mechanically-sealing apparatus that ring, mechanical sealing linkage ring and back-moving spring constitute has solved the valve rod rotation again preferably by mechanical seal, stronger than the O RunddichtringO of original use.

Description of drawings

Fig. 1 is an one-piece construction synoptic diagram of the present utility model.

Fig. 2 and Fig. 3 are the synoptic diagram of the used Rouser of swiping the card of the utility model.

Fig. 4 is the synoptic diagram of the mechanically-sealing apparatus of used valve of the utility model and valve rod.

Among the figure: the integrated housing of 1-, 2-movement, 3-counter, the 4-dry cell, 5-single-chip microcomputer, 6-plastic casing, the 7-inductive coil, 8-tongue tube electronic switch, 9-mechanical seal encircles surely, the 10-mechanical sealing linkage ring, 11-valve upper friction plate, friction disc under the 12-valve, 13-Nd-Fe-B magnet steel sensing device, 14-valve rod, 15-valve body, 16-back-moving spring 17,17 '-rubber ring, the 18-radio-frequency card.

Embodiment:

As figure, a kind of low-power consumption radio-frequency card prepay water meter contains that integrated housing 1, movement 2, counter 3, dry cell 4, single-chip microcomputer 5, plastic casing 6, inductive coil 7, tongue tube electronic switch 8, mechanical seal encircle 9 surely, friction disc 12 under the mechanical sealing linkage ring 10, valve upper friction plate 11, valve, be located at Nd-Fe-B magnet steel sensing device 13, valve rod 14, valve body 15, back-moving spring 16 and

rubber ring

17 and 17 on the radio-frequency card 18 '.Inductive coil 7 is to single-chip microcomputer 5 transmission pulse signals during work, and this pulse signal shows remaining sum and accumulation use amount information by LCDs after single-chip microcomputer 5 is handled; 5 couples of users' of single-chip microcomputer water rate is divided into progressive price, i.e. par water rate, the second ladder water rate of amount of plan and the 3rd ladder water rate beyond the planned quota in different periods or unit interval.After pre-payment used up, single-chip microcomputer 5 can send instruction and cut out the water meter valve, and the prompting user goes card is supplemented with money (forward purchasing water).

During concrete enforcement, dry cell 4 is selected lithium battery ER14505M for use, and single-chip microcomputer is selected the low-power consumption chip VT60423-OFPA2wfmps of Philip for use, and the tongue tube electronic switch adopts Japan to produce, specification Φ 2.2 * 18mm.

Claims

1, a kind of low-power consumption radio-frequency card prepay water meter, it is the counter based on mechanical water meter, has installed sensor, single-chip microcomputer and valve on counter additional, it is characterized in that:

1. the employing wake-up mechanism of swiping the card, concrete measure are to be serially connected with tongue tube electronic switch (8) on inductive coil (7), and Nd-Fe-B magnet steel sensing device (13) is housed on radio-frequency card (18) simultaneously;

2. valve is to take the relative rotation between the friction disc (12) under valve upper friction plate (11) and the valve to reach the purpose of opening and closing;

3. go up suit mechanical sealing linkage ring (10) at valve rod (14), decide ring (9) and in valve body (15), install the mechanism's sealing that is complementary with described mechanical sealing linkage ring (10) additional, mechanical sealing linkage ring (10) bottom adds back-moving spring (16) again, thereby constitutes the mechanically-sealing apparatus of valve rod (14).