CN205426268U - Measurement meter reading structure and reading device based on piezoelectricity - Google Patents

Abstract

The utility model relates to a measurement apparatus count field, especially a measurement meter reading structure and reading device based on piezoelectricity. Include for the piezoelectricity module of generate current pulse when receiving pressure, an and runner, contain at least one bellying on the circumference of runner, the runner is perpendicular to be set up in piezoelectricity module one side, when the runner is rotatory, the bellying with the extrusion takes place for the piezoelectricity module, simultaneously, part on the runner circumference beyond the bellying when rotatory not with the contact of piezoelectricity module. The utility model discloses a setting up piezoelectricity module and set up the bellying on the runner circumference, letting bellying and the pulse of piezoelectricity module extrusion generate current realize the count, do not relate to any magnet among the whole metering device, simultaneously, runner and piezoelectricity module itself need not supplied power, in energy -conservation very big improvement the interference killing feature of device.

Description

A kind of gauge table reading structure based on piezoelectricity and reading plotter

Technical field

This utility model relates to metering device counted fields, a kind of gauge table reading structure based on piezoelectricity and reading plotter.

Background technology

Traditional fluid metering instrument (water meter, gas meter etc.) uses fluid driven runner (being referred to as character wheel after arranging 0-9 ten digits on described runner periphery) to rotate more; magnet steel is set on runner simultaneously; and then by Hall element or tongue tube element senses magnet steel position; thus realize the reading to runner; but in actual applications, use the above-mentioned mode to runner reading often to cause error in reading due to problems such as mechanical vibration, electromagnetic interference, magnet steel demagnetizations.

Utility model content

Goal of the invention of the present utility model is, what the mode of the magnet steel position being positioned on runner for existing employing Hall element or tongue tube element senses carried out that the reading mode of runner reading exists easy being disturbed by problems such as mechanical vibration, electromagnetic interference, magnet steel demagnetizations, thus the problem causing error in reading, it is provided that a kind of gauge table reading structure based on piezoelectricity without magnetic.

To achieve these goals, the technical solution adopted in the utility model is:

A kind of gauge table reading structure based on piezoelectricity, including,

Piezo electric module, for producing current impulse when being under pressure；

Runner, the circumference of described runner comprises at least one lobe, and described runner is vertically set on piezo electric module side, when runner rotates, described lobe extrudes with described piezo electric module, and meanwhile, the part beyond runner circumference upper projecting portion does not contacts with described piezo electric module.

I.e., when being vertically set on the runner rotation of piezo electric module side, when lobe extruding piezo electric module, both sides extrude, the most described piezo electric module produces current impulse, and described in the portion extrusion beyond lobe during piezo electric module, runner and described piezo electric module depart from, the most described piezo electric module does not has electric current to produce.

Preferably, described piezo electric module is piezoelectric membrane.

In some embodiments, lobe on described runner circumference is one, it is 10 degree of-270 degree that described lobe accounts for the radian of runner circumference, now, when the lobe of runner circumference extrudes described piezo electric module, piezo electric module persistently produces current impulse, but owing to lobe is only one, therefore runner often rotates a circle, and described piezo electric module only produces primary current pulse.

Preferably, described lobe accounts for the radian of runner circumference is 180 degree.

In some embodiments, described piezo electric module is two, and it is relative to the rotating shaft setting symmetrically or non-symmetrically of runner.Now, each lobe rotates a circle and can produce twice current impulse.

In other embodiment, lobe on described runner circumference is ten, described ten lobe are for being uniformly distributed, and it is more than 0 degree that each described lobe accounts for the radian of runner circumference, less than or equal to 15 degree, now, whenever there being lobe to extrude described piezo electric module, the most described piezo electric module produces primary current pulse, and therefore runner often rotates a circle, described piezo electric module can produce 10 subpulses, the most corresponding 10 place readings.

This utility model provides a kind of gauge table reading plotter based on piezoelectricity simultaneously, comprises processing module and reading structure as above,

Described processing module is connected with described piezo electric module, is used for receiving described current impulse, and counts according to the quantity of described current impulse.

In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:

This utility model is by arranging piezo electric module and in runner lobe provided circumferentially about, allow lobe produce current impulse with piezo electric module extruding and realize counting, whole metering device is not related to any magnet, simultaneously, runner and piezo electric module itself are not required to power supply, greatly improve the capacity of resisting disturbance of device while energy-conservation.

Accompanying drawing explanation

Fig. 1 is a specific embodiment of the reading structure that this utility model provides.

Fig. 2 is another specific embodiment of the reading structure that this utility model provides.

Fig. 3 is another specific embodiment of the reading structure that this utility model provides.

The structured flowchart of the reading plotter that Fig. 4 provides for this utility model.

Reference: 1-reading structure；11-runner, 111-lobe, 12-piezo electric module；2-processing module.

Detailed description of the invention

Below in conjunction with the accompanying drawings, this utility model is described in detail.

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.

Embodiment 1:As shown in Figure 1 and Figure 2, the present embodiment provides a kind of gauge table reading structure 1 based on piezoelectricity, including,

Piezo electric module 12, for producing current impulse when being under pressure；

Runner 11, at least one lobe 111 is comprised on the circumference of described runner 11, described runner 11 is vertically set on piezo electric module 12 side, when runner 11 rotates, described lobe 111 extrudes with described piezo electric module 12, meanwhile, the part beyond runner 11 circumference upper projecting portion 111 does not contacts with described piezo electric module 12；

I.e., it is vertically set on the runner 11 of piezo electric module 12 side when rotating, when lobe 111 extrudes piezo electric module 12, both sides extrude, the most described piezo electric module 12 produces current impulse, and described in the portion extrusion beyond lobe 111 during piezo electric module 12, runner 11 and described piezo electric module 12 depart from, the most described piezo electric module 12 does not has electric current to produce.

Preferably, described piezo electric module 12 is piezoelectric membrane.

In some embodiments, lobe 111 on described runner 11 circumference is one, it is 10 degree of-270 degree that described lobe 111 accounts for the radian of runner 11 circumference, as the lobe 111 in Fig. 1 accounts for radian θ=20 degree of runner 11 circumference, and the lobe 111 in Fig. 2 accounts for radian θ=180 degree of runner 11 circumference, now, when the lobe 111 of runner 11 circumference extrudes described piezo electric module 12, piezo electric module 12 persistently produces current impulse, but owing to lobe 111 is only one, therefore runner 11 often rotates a circle, and described piezo electric module 12 only produces primary current pulse.

Embodiment 2:In the present embodiment, described piezo electric module 12 is two, and it is relative to the rotating shaft setting symmetrically or non-symmetrically of runner 11.Now, each lobe 111 rotates a circle and can produce twice current impulse.Can be by judging that the sequencing of two piezo electric module generation pulses judges the direction of rotation of runner 11.

Embodiment 3:nullAs shown in Figure 3，It is with embodiment 1 difference，In the present embodiment，Lobe 111 on described runner 11 circumference is ten，Described ten lobe 111 sizes are identical and for being evenly distributed on runner circumference，Each described lobe 111 accounts for the radian θ of runner 11 circumference for more than 0 degree，Less than or equal to 15 degree，Now，Described piezo electric module 12 is extruded whenever there being lobe 111，The most described piezo electric module 12 produces primary current pulse，Therefore runner 11 often rotates a circle，Described piezo electric module 12 can produce 10 subpulses，The most corresponding 10 place readings，It should be noted，Interval should be necessary between each lobe 111 on runner 11 circumference，To ensure that only having a lobe 111 extrudes with described piezo electric module 12 simultaneously，The radian θ accounting for runner circumference such as lobe 111 each in Fig. 3 is 10 degree；In the case of some are extreme, however not excluded that have more than one lobe 111 to extrude with piezo electric module 12 simultaneously, now can be by judging that the piezoelectric current size variation that piezo electric module 12 produces distinguishes the rotation of runner.

Embodiment 4:As shown in Figure 4, the present embodiment provides a kind of gauge table reading plotter based on pressure electricity-generating, processing module 1 and the reading structure 1 provided such as embodiment 1 or 2 are provided, described processing module 1 is connected with described piezo electric module 12, for receiving described current impulse, and count according to the quantity of described current impulse.It is well known that the current impulse that described piezo electric module 12 produces also needs to could to be processed after a series of process, module processes easily, and related content is known in the art general knowledge, is not repeated herein.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.

Claims (7)

1. a gauge table reading structure based on piezoelectricity, it is characterised in that include,

Piezo electric module, for producing current impulse when being under pressure；

Runner, the circumference of described runner comprises at least one lobe, and described runner is vertically set on piezo electric module side, when runner rotates, described lobe extrudes with described piezo electric module, and meanwhile, the part beyond runner circumference upper projecting portion does not contacts with described piezo electric module.

Reading structure the most according to claim 1, it is characterised in that described piezo electric module is piezoelectric membrane.

Reading structure the most according to claim 1, it is characterised in that the lobe on described runner circumference is one, it is 10 degree of-270 degree that described lobe accounts for the radian of runner circumference.

Reading structure the most according to claim 3, it is characterised in that it is 180 degree that described lobe accounts for the radian of runner circumference.

Reading structure the most according to claim 1, it is characterised in that the lobe on described runner circumference is ten, described ten lobe are for being uniformly distributed, and each described lobe accounts for the radian of runner circumference for more than 0 degree, less than or equal to 15 degree.

Reading structure the most according to claim 1, it is characterised in that described piezo electric module is two, it is relative to the rotating shaft setting symmetrically or non-symmetrically of runner.

7. a gauge table reading plotter based on piezoelectricity, it is characterised in that comprise processing module and the reading structure as described in any one of claim 1 to 6,

Described processing module is connected with described piezo electric module, is used for receiving described current impulse, and counts according to the quantity of described current impulse.