CN203163780U - Bi-directional detection sensor assembly for intelligent water meter - Google Patents

Bi-directional detection sensor assembly for intelligent water meter Download PDF

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Publication number
CN203163780U
CN203163780U CN 201220749916 CN201220749916U CN203163780U CN 203163780 U CN203163780 U CN 203163780U CN 201220749916 CN201220749916 CN 201220749916 CN 201220749916 U CN201220749916 U CN 201220749916U CN 203163780 U CN203163780 U CN 203163780U
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CN
China
Prior art keywords
water meter
magnet
sensor assembly
tmr
magnetic
Prior art date
Application number
CN 201220749916
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Chinese (zh)
Inventor
李伯伟
Original Assignee
天津开发区翔龙网络设备有限公司
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Priority to CN 201220749916 priority Critical patent/CN203163780U/en
Application granted granted Critical
Publication of CN203163780U publication Critical patent/CN203163780U/en

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Abstract

The utility model discloses a bi-directional detection sensor assembly for an intelligent water meter. The sensor assembly comprises a magnet and two TMR (tunneling magnetoresistance) switch sensors, wherein the magnet is mounted at a water meter metering rotating part, and the two TMR switch sensors are located above the magnet, and sensitive shafts of the two switch sensors are orthogonal to each other. The bi-directional detection sensor assembly can perform countercurrent detection and instantaneous flow detection, enables the metering to be accurate, can find out a leakage phenomenon, and sends out a large-flow alarm signal; the fault rate is low, so that the maintenance cost of the water meter is low; and a magnetic switch sensor for detecting external magnetic disturbance of the water meter is added, and can detect abnormal magnetic disturbance and send out alarm signals timely, so that corresponding treatment is realized.

Description

A kind of two-way detecting sensor assembly for intellectual water meter

Technical field

The utility model relates to a kind of flow metering sensor, particularly a kind of two-way detecting sensor assembly for intellectual water meter.

Background technology

Intelligent water meter is on the basis of mechanical water meter, mechanical information is converted to electronic signal, thus remote transmission or the long-range survey of finishing the intellectual water meter data copy, and be aided with supporting computer data processing system, data are gathered arrangement, water meter is carried out system management.Therefore the gordian technique of intelligent water meter is exactly sensor technology.Common intellectual water meter sensor mainly comprises following several, and a kind of is the tongue tube sensor, and it installs tongue tube and magnet additional in mechanical water meter, utilizes reed circulating open close under the ringing of magnet of tongue tube, thus output metrical pulse signal; A kind of is Hall element, it installs Hall element and magnet additional in mechanical water meter, constitute the sensor based on the magnetoelectricity switch technology, and the magnet that is installed on the counting scale position turns round along with counting rotating disk, every process Hall element is once namely exported a count pulse by Hall element; A kind of is Wei root sensor, it is according to distinctive magnetic damping characteristic, the spike signal that output duty cycle differs, need to increase extra pulse shaping circuit, circuit complexity, poor reliability, its power consumption is bigger, metering is inaccurate when low discharge, and the magnetic field, working point that it is had relatively high expectations proposes very high requirement to its installation site; A kind of is photoelectric sensor: a photoelectric commutator is installed at the rotating disk place at mechanical water meter, at rotating disk a groove is arranged, and rotating disk whenever turns around, and converter was finished once electricity conversion when groove was defeated through light, exported a count pulse.What these several sensors sent is pulse signal, water meter can reverse under special operating position, in case the same pulse signal that produces of reversing, the cumulative measurement of sort signal system is considered as normal metering, cause the indicator of water gauge metering inconsistent with the numeral metering, easily make between user and the administrative authority and produce metering dispute; And originally experience extraneous vibration influence or because " water hammer " in the water pipe causes the vibration of water meter movement of water meter, the capital makes pulse sensor send improper pulse signal, cause the pulse error, and because response frequency is low, the common scheme of digital water gauge is the speed change by gear, and sensor is installed in 10 up-flow amount positions, and such water meter can only be measured the total flow in a period of time, and can not measure instantaneous delivery, will cause measuring accuracy low like this; And the energy consumption of above several sensors is bigger, especially photoelectric sensor and Wei Gen sensor, make battery short serviceable life, user and administrative authority are difficult to having at fingertips in the battery operating position with water meter, in case battery electric quantity deficiency, water meter measurement may be out of service, perhaps causes the user can't water, and the administrative authority that perhaps supplies water does not suffer a loss because sensor of water meter measures; And tongue tube sensor, Wei root sensor and photoelectric sensor failure rate height, the maintenance cost height; In addition, tongue tube sensor and Hall element are subjected to magnetic interference easily, and some people also can deliberately produce powerful magnetic interference in watermeter shell place additional magnet, reach water purpose steathily.

The utility model content

The utility model provides a kind of two-way detecting sensor assembly that is used for intellectual water meter that can detect adverse current and high precision, low-power consumption and be easy to safeguard for solving the technical matters that exists in the known technology.

The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: a kind of two-way detecting sensor assembly for intellectual water meter, comprise the magnet that is installed on the water meter measurement rotatable parts, also comprise being positioned at directly over the described magnet and two TMR reluctance switch sensors that sensitive axes is mutually orthogonal.

Described magnet is positioned at the below of water gage glass, and described two TMR reluctance switch sensors are positioned at the top of water gage glass.

Also comprise the magnetic switch sensor that detects the extraneous magnetic interference of water meter, described magnetic switch sensor is away from described magnet and insensitive to the magnetic field of described magnet.

Described magnetic switch sensor is Hall element or tongue tube sensor.

Described two TMR reluctance switch sensors are welded on the first circuit board, described first circuit board and watermeter shell fixed installation, and described magnetic switch sensor is welded on the second circuit board, described second circuit board and the fixed installation of described first circuit board.

Described two TMR reluctance switch sensors are has the ambipolar TMR reluctance switch sensor that cmos digital latchs output.

Described magnet is rectangular parallelepiped.

Described sensor module integral body adds the ABS protective cover and carries out whole filling and sealing with silica gel.

Advantage and the good effect that the utlity model has are: adopt two mutually orthogonal TMR reluctance switch sensors of sensitive axes to detect rotatable parts rotation situation such as water meter wheel rotor, can send four kinds of different conditions signals, thereby obtain rotational speed and the sense of rotation of impeller, can carry out adverse current detection and instantaneous delivery detects, make accurate measurement, and can find the situation of leaking, send big flow alerting signal; Sensors such as the relative tongue tube sensor of reluctance switch sensor, Wei root sensor and photoelectric sensor, can under continuously running duty, have low-power consumption, high frequency response, high sensitivity, wide measurement clearance, and the life-span is long and the characteristics of high reliability, because of low in energy consumption, the water meter battery life is long, long and the high reliability because of the reluctance switch sensor life-time, thereby failure rate is low, makes that the water meter maintenance cost is low; Increase the magnetic switch sensor that detects the extraneous magnetic interference of water meter, can detect at unusual magnetic interference, in time send alerting signal and respective handling.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is that two TMR reluctance switch sensors of the present utility model and magnet positions concern synoptic diagram;

Fig. 3 a is two TMR reluctance switch sensors of the present utility model output signal synoptic diagram when the magnet clockwise direction is rotated;

Fig. 3 b is two TMR reluctance switch sensors of the present utility model output signal synoptic diagram when the magnet counter rotation.

Among the figure: 1, ABS protective cover; 2, water gage glass; 3, water meter; 4, second circuit board; 5, first circuit board; 6, magnet; 7, TMR reluctance switch sensor.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1, Fig. 2, Fig. 3 a and Fig. 3 b, a kind of two-way detecting sensor assembly for intellectual water meter, comprise the magnet 6 on the metering rotatable parts that are installed in water meter 3, the metering rotatable parts comprise water meter counter wheel etc., also comprise being positioned at directly over the described magnet 6 and two TMR reluctance switch sensors 7 that sensitive axes is mutually orthogonal.

Described magnet 6 can be positioned at the below of water gage glass 2, and described two TMR reluctance switch sensors 7 can be positioned at the top of water gage glass 2.

Also can further comprise the magnetic switch sensor that detects the extraneous magnetic interference of water meter, described magnetic switch sensor is away from described magnet and insensitive to the magnetic field of described magnet.Described magnetic switch sensor can be Hall element or tongue tube sensor.The installation site of described magnetic switch sensor should guarantee that the magnet of water meter does not produce any influence to it, when not having external magnetic interference like this, the magnet that the magnetic switch sensor is installed the water meter rotatable parts is insensitive, do not produce pulse signal, as extraneous magnetic interference opportunity, then can produce pulse signal, send warning.

During installation, described two TMR reluctance switch sensors 7 can be welded on the first circuit board 5, with the shell fixed installation of described first circuit board 5 with water meter 3, again described magnetic switch sensor is welded on the second circuit board 4, described second circuit board 4 can be fixedly mounted with described first circuit board 5.

Described two TMR reluctance switch sensors 7 are optional to have the ambipolar TMR reluctance switch sensor that cmos digital latchs output.

Described magnet 6 optional rectangular parallelepipeds or other forms.

Described sensor module can integral body add ABS protective cover 1 and carry out whole filling and sealing with silica gel.Classification of waterproof is IP68.

The utility model principle of work is: a direction of TMR magnetic switch can be exported high level when sensing the N pole field, can output low level when sensing the S pole field.Please refer to Fig. 2, Fig. 3 a and Fig. 3 b, two vertical TMR magnetic switchs of placing are placed into the magnet top, when magnet rotates a circle, will produce the level of 4 states.When sense the two-way level for height (10) → high high (11) → when low high (01) → low (00) changes in proper order for being rotated in the forward, please refer to Fig. 2, when level changes for low high (01) → high (11) → just (10) → low (00) order, be reverse rotation, if the position of magnetic switch and magnet steel is to be put into 0.01 of water meter 3On the counter wheel, then revolving turns around is 0.1m 3When external world's material proximity transducer that is magnetic, the tongue tube that detects as external interference or magnetic switch can output low levels, so just can detect the magnetic interference in the external world.

Although by reference to the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.

Claims (8)

1. a two-way detecting sensor assembly that is used for intellectual water meter comprises the magnet that is installed on the water meter measurement rotatable parts, it is characterized in that, also comprises being positioned at directly over the described magnet and two TMR reluctance switch sensors that sensitive axes is mutually orthogonal.
2. the two-way detecting sensor assembly for intellectual water meter according to claim 1 is characterized in that described magnet is positioned at the below of water gage glass, and described two TMR reluctance switch sensors are positioned at the top of water gage glass.
3. the two-way detecting sensor assembly for intellectual water meter according to claim 1, it is characterized in that, also comprise the magnetic switch sensor that detects the extraneous magnetic interference of water meter, described magnetic switch sensor is away from described magnet and insensitive to the magnetic field of described magnet.
4. the two-way detecting sensor assembly for intellectual water meter according to claim 3 is characterized in that, described magnetic switch sensor is Hall element or tongue tube sensor.
5. the two-way detecting sensor assembly for intellectual water meter according to claim 3, it is characterized in that, described two TMR reluctance switch sensors are welded on the first circuit board, described first circuit board and watermeter shell fixed installation, described magnetic switch sensor is welded on the second circuit board, described second circuit board and the fixed installation of described first circuit board.
6. according to the arbitrary described two-way detecting sensor assembly for intellectual water meter of claim 1 to 5, it is characterized in that described two TMR reluctance switch sensors are has the ambipolar TMR reluctance switch sensor that cmos digital latchs output.
7. according to the arbitrary described two-way detecting sensor assembly for intellectual water meter of claim 1 to 5, it is characterized in that described magnet is rectangular parallelepiped.
8. according to the arbitrary described two-way detecting sensor assembly for intellectual water meter of claim 1 to 5, it is characterized in that described sensor module integral body adds the ABS protective cover and carries out whole filling and sealing with silica gel.
CN 201220749916 2012-12-29 2012-12-29 Bi-directional detection sensor assembly for intelligent water meter CN203163780U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220749916 CN203163780U (en) 2012-12-29 2012-12-29 Bi-directional detection sensor assembly for intelligent water meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220749916 CN203163780U (en) 2012-12-29 2012-12-29 Bi-directional detection sensor assembly for intelligent water meter

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CN203163780U true CN203163780U (en) 2013-08-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568032A (en) * 2015-01-23 2015-04-29 北京奥特美克科技股份有限公司 Magneto-electrical flow meter
CN105424108A (en) * 2016-01-04 2016-03-23 上海肯特仪表股份有限公司 Magnetic field anomaly detection device of electromagnetic flowmeter sensor
CN108351237A (en) * 2015-07-28 2018-07-31 Yppict株式会社 The usage amount of fluid or gas measures and flow direction judgment means
CN108931344A (en) * 2018-05-08 2018-12-04 山东潍微科技股份有限公司 A kind of water supply line leakage loss table end intelligent wireless remote transmission warning device and its implementation
CN109559486A (en) * 2018-11-13 2019-04-02 禹州市天源生物科技有限公司 A kind of Roots's measuring instrument warning device of wireless transmission

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568032A (en) * 2015-01-23 2015-04-29 北京奥特美克科技股份有限公司 Magneto-electrical flow meter
CN108351237A (en) * 2015-07-28 2018-07-31 Yppict株式会社 The usage amount of fluid or gas measures and flow direction judgment means
CN105424108A (en) * 2016-01-04 2016-03-23 上海肯特仪表股份有限公司 Magnetic field anomaly detection device of electromagnetic flowmeter sensor
CN108931344A (en) * 2018-05-08 2018-12-04 山东潍微科技股份有限公司 A kind of water supply line leakage loss table end intelligent wireless remote transmission warning device and its implementation
CN109559486A (en) * 2018-11-13 2019-04-02 禹州市天源生物科技有限公司 A kind of Roots's measuring instrument warning device of wireless transmission

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130828

Termination date: 20151229

EXPY Termination of patent right or utility model