CN210638757U

CN210638757U - Non-magnetic water meter pulse signal remote detection device

Info

Publication number: CN210638757U
Application number: CN201921907803.XU
Authority: CN
Inventors: 李文辉; 孙全德; 戴高乐; 孙伟峰; 刘鹏超; 程永霞; 刘利辉; 陈双印; 程松鹤; 潘鹏
Original assignee: Luoyang Vision Technology Co ltd
Current assignee: Luoyang Vision Technology Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-05-29
Anticipated expiration: 2029-11-07

Abstract

The utility model relates to a no long-distance detection device of magnetism water gauge pulse signal, it includes the water gauge part and installs sensing part in the water gauge part, the water gauge part includes water meter case (1), is located water gauge pointer (2) in water gauge case (1) and installing LC tank (3) in water gauge pointer (2), sensing part includes sensing case (7) and installs passive sensor (8) in sensing case (7), LC tank (3) with the frequency of passive sensor (8) is the same. The oscillation attenuation rate is high, the amplitude of a detection signal is large, and the detection distance can be increased to 6mm, so that the installation can be realized without destroying the glass cover of the water meter, the installation is simple and convenient, and the detection is accurate.

Description

Non-magnetic water meter pulse signal remote detection device

Technical Field

The utility model belongs to the technical field of the water gauge, a remote detection device of water gauge is related to, concretely relates to remote detection device of no magnetism water gauge pulse signal.

Background

Water meters are devices used to measure the amount of water used by a household or a unit. For historical legacy reasons, there are also many water meters in homes or institutions that are mechanical water meters. The mechanical water meter cannot realize remote automatic detection of water consumption of families or units. Therefore, the user needs to manually go to the home of the user to read the meter, and manually upload the meter reading result to the meter reading center. The mode not only needs to waste a large amount of manpower to read the meter, but also often causes the meter reading difficulty because people are not necessarily at home of a user during the meter reading.

For this reason, it is considered to add a remote detection device to the mechanical water meter, so that it is expected that remote automatic detection of the mechanical water meter is realized by the remote detection device. The method for modifying the mechanical water meter into the non-magnetic water meter is a common method for modifying the mechanical water meter so as to realize remote automatic detection. At present, there are two general methods for modifying a mechanical water meter into a non-magnetic water meter.

One such method is to retrofit the impeller of the water meter. For example, chinese utility model patent No. 201320517515.X discloses a liquid flow non-magnetic detection device. As shown in fig. 1, in the liquid flow non-magnetic detection device, an LC oscillating circuit 1 is mounted above an impeller 8 of a liquid flow meter, and one half of a surface of the impeller 8 facing the LC oscillating circuit 1 is an insulating region 9 made of an insulating material, and the other half is a conductive region 10 coated with copper metal. The rotation of the impeller 8 is sensed by the LC oscillating circuit 1 to realize automatic detection. However, the liquid flow nonmagnetic detection device needs to be improved by replacing the existing impeller with an insulating area made of insulating material on one half and a conductive area coated with metal copper on the other half. Therefore, the change amount is large, and the manufacturing cost is high.

Another approach is to modify the pointer of the meter. As shown in fig. 2, a non-magnetic metal piece is added to a part of the pointer by changing the original purely mechanical pointer. When the pointer is driven to rotate by the lower water flow, the metal sheet can also rotate along with the pointer. Above the metal sheet, a passive sensor for detection, typically an LC oscillating circuit, is mounted. The metal sheet is used for changing the dielectric constant of the medium, when the LC oscillating circuit runs on the metal sheet, the alternating magnetic field can generate an alternating electric field in the metal sheet to generate an eddy current, the damping oscillation coefficient of the LC oscillating circuit is increased, the damping oscillation attenuation speed is accelerated, and the receiver generates pulse counting after detecting the change of the damping oscillation. However, such a nonmagnetic water meter has the following problems: the damping oscillation of the sensor has slow decay rate and the detection signal amplitude is low. Thus, the detection distance is only 2mm or less, that is, the distance of the LC oscillating circuit from the pointer is within 2 mm. However, the glass cover of the existing mechanical water meter is usually 5mm thick. Therefore, the LC tank cannot be mounted directly above the water meter, but rather, a hole must be made in the glass cover of the water meter and the LC tank mounted into the water meter through the hole so that it is within 2mm of the pointer. Thus, it is troublesome to install and modify.

In view of the above-mentioned defects in the prior art, there is an urgent need for a novel non-magnetic water meter pulse signal remote detection device.

Disclosure of Invention

An object of the utility model is to overcome the shortcoming that exists among the prior art, provide a do not have long-distance detection device of magnetic water gauge pulse signal, its oscillation attenuation speed is fast, detected signal amplitude is big, can increase the detection distance to 6mm for the installation can be realized to the glass cover that need not destroy the water gauge, and the simple installation detects the accuracy.

In order to achieve the above object, the present invention provides the following technical solutions:

a non-magnetic water meter pulse signal remote detection device comprises a water meter part and a sensing part arranged on the water meter part, and is characterized in that the water meter part comprises a water meter shell, a water meter pointer positioned in the water meter shell and an LC oscillation circuit arranged in the water meter pointer, the sensing part comprises a sensing shell and a passive sensor arranged in the sensing shell, and the frequency of the LC oscillation circuit is the same as that of the passive sensor.

Further wherein the passive sensor is an LC tank circuit.

Further, the cross section of the water meter pointer is semi-circular, and the LC oscillating circuit is arranged in the semi-circular.

On the other hand, the water meter shell is internally provided with an impeller, the water meter pointer is connected with the impeller through a transmission mechanism, and the impeller drives the water meter pointer to rotate through the transmission mechanism.

Further, a glass cover is further installed on the water meter shell, and the sensing part is installed above the glass cover.

Finally, the sensing part also comprises a singlechip, a power supply control circuit, an excitation control circuit, an LC oscillation detection circuit, an envelope detection circuit and a trigger circuit which are positioned in the sensing shell, the first output end of the singlechip is connected with the input end of the power supply control circuit, the second output end of the singlechip is connected with the input end of the excitation control circuit, the output ends of the power supply control circuit and the excitation control circuit are respectively connected with the two ends of the LC oscillating circuit, the oscillation output end of the LC oscillation circuit is connected with the input and output end of the LC oscillation detection circuit, the output end of the LC oscillation detection circuit is connected with the input end of the envelope detection circuit, the output end of the envelope detection circuit is connected with the input end of the trigger circuit, and the output end of the trigger circuit is connected with the capture input end of the timer of the single chip microcomputer.

Compared with the prior art, the utility model discloses a no magnetism water gauge pulse signal remote detection device has following beneficial technological effect:

1. the water meter pointer is only required to be modified, so that the modification is simple and the manufacturing cost is low;

2. the damping oscillation has high damping rate and high detection signal amplitude, and the detection distance can reach 6 mm. Thus, the LC oscillating circuit can be mounted directly above the water meter without having to make a hole in the glass cover of the water meter, whereby the mounting and modification thereof are simple and the modified appearance is beautiful.

Drawings

Figure 1 is a schematic view of a prior art non-magnetic water meter.

Figure 2 is a schematic view of another non-magnetic water meter of the prior art.

Fig. 3 is a schematic diagram of the pulse signal remote detection device for a non-magnetic water meter.

Fig. 4 is the cross-sectional schematic view of the water meter pointer of the non-magnetic water meter pulse signal remote detection device of the present invention.

Fig. 5 is a schematic diagram of the sensing part of the non-magnetic water meter pulse signal remote detection device of the present invention.

Detailed Description

The present invention is further described with reference to the following drawings and examples, which are not intended to limit the scope of the present invention.

In the present disclosure, it should be understood by those skilled in the art that the terms "left", "right", "up", "down", etc. are used only to indicate relative relationships, and do not represent actual directions.

Fig. 3 shows the utility model discloses a non-magnetic water meter pulse signal remote detection device's constitution sketch map. As shown in figure 3, the utility model discloses a non-magnetic water meter pulse signal remote detection device includes the water gauge part and installs sensing part on the water gauge part. The water meter part is formed by modifying the original mechanical water meter. The sensing part senses and transmits the sensing part at a long distance.

Wherein, the water gauge part is similar with current mechanical water gauge, has only reformed transform to the water gauge pointer of current mechanical water gauge part. Specifically, the water meter part comprises a water meter housing 1, a water meter pointer 2 positioned in the water meter housing 1 and an LC oscillating circuit 3 installed in the water meter pointer 2.

Preferably, as shown in fig. 3, unlike the existing cylindrical water meter pointer, in the present invention, the cross section of the water meter pointer 2 has a semi-circular shape. The LC tank 3 is mounted within the semi-circumference. In this way, the LC tank 3 is more convenient and robust to install.

The water meter housing 1 also has an impeller 4 therein. The water meter pointer 2 is connected with the impeller 4 through the transmission mechanism 5, and the impeller 4 drives the water meter pointer 2 to rotate through the transmission mechanism 5. And the rotation of the LC oscillating circuit 3 is driven by the rotation of the water meter pointer 2.

The sensing portion includes a sensing housing 7 and a passive sensor 8 mounted within the sensing housing 7. The LC tank 3 has the same frequency as the passive sensor 8.

Preferably, the passive sensor 8 is an LC oscillating circuit. Thus, the LC tank 3 and the LC tank 8 have the same frequency.

Therefore, when the water meter pointer 2 drives the LC oscillating circuit 3 to run below the LC oscillating circuit, the magnetic field is coupled into the LC oscillating circuit 3, and the damping oscillation attenuation rate can be accelerated. Experiments prove that the original detection distance is within 2mm, the detection distance can be effectively increased to 6mm by adopting the method, and the amplitude of a detection signal can be effectively improved.

Wherein, still install glass cover 6 on the water gauge shell 1. Since the detection distance can be increased to 6mm, the sensing portion can be directly mounted above the glass cover 6 without perforating the glass cover 6, so that the mounting and modification are simpler and faster.

Furthermore, in the utility model, similarly to the prior art, the sensing portion further includes a single chip microcomputer, a power supply control circuit, an excitation control circuit, an LC oscillation detection circuit, an envelope detection circuit, and a trigger circuit which are located inside the sensing housing 7. And the first output end of the singlechip is connected with the input end of the power supply control circuit, and the second output end of the singlechip is connected with the input end of the excitation control circuit. And the output ends of the power supply control circuit and the excitation control circuit are respectively connected with two ends of the LC oscillating circuit. And the oscillation output end of the LC oscillation circuit is connected with the input and output ends of the LC oscillation detection circuit. And the output end of the LC oscillation detection circuit is connected with the input end of the envelope detection circuit. And the output end of the envelope detection circuit is connected with the input end of the trigger circuit. The output end of the trigger circuit is connected with the capture input end of the timer of the single chip microcomputer.

Wherein, the singlechip is used for controlling. The power supply control circuit is used for controlling the power on and off of the LC oscillating circuit. The excitation control circuit is used for providing excitation for the LC oscillating circuit. The LC oscillation detection circuit is used for detecting the oscillation of the LC oscillation circuit. The envelope detection circuit is used for detecting. The starting circuit is used for triggering.

The utility model discloses a no magnetism water gauge pulse signal remote detection device only need reform transform the water gauge pointer, and it is simple to reform transform, and the cost is low. Meanwhile, the damping oscillation attenuation rate is high, the amplitude of a detection signal is high, and the detection distance can reach 6mm, so that the LC oscillation circuit can be directly installed above the water meter without opening a hole in a glass cover of the water meter, and therefore, the installation and the transformation are simpler, and the appearance is more attractive after the transformation.

The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. The non-magnetic water meter pulse signal remote detection device comprises a water meter part and a sensing part arranged on the water meter part, and is characterized in that the water meter part comprises a water meter shell (1), a water meter pointer (2) positioned in the water meter shell (1) and an LC oscillation circuit (3) arranged in the water meter pointer (2), the sensing part comprises a sensing shell (7) and a passive sensor (8) arranged in the sensing shell (7), and the frequency of the LC oscillation circuit (3) is the same as that of the passive sensor (8).

2. A non-magnetic water meter pulse signal remote detection device according to claim 1, characterized in that the passive sensor (8) is an LC oscillating circuit.

3. A non-magnetic water meter pulse signal remote detection device according to claim 2, characterized in that the cross section of the water meter pointer (2) is semi-circle shaped, and the LC oscillating circuit (3) is installed in the semi-circle shape.

4. A non-magnetic water meter pulse signal remote detection device according to claim 3, characterized in that an impeller (4) is further provided in the water meter housing (1), the water meter pointer (2) is connected with the impeller (4) through a transmission mechanism (5), and the impeller (4) drives the water meter pointer (2) to rotate through the transmission mechanism (5).

5. A non-magnetic water meter pulse signal remote detection device according to claim 4, characterized in that a glass cover (6) is further installed on the water meter housing (1), and the sensing part is installed above the glass cover (6).

6. The non-magnetic water meter pulse signal remote detection device according to any one of claims 2 to 5, wherein the sensing part further comprises a single chip microcomputer, a power supply control circuit, an excitation control circuit, an LC oscillation detection circuit, an envelope detection circuit and a trigger circuit, the single chip microcomputer, the power supply control circuit, the excitation control circuit, the LC oscillation detection circuit, the envelope detection circuit and the trigger circuit are arranged in the sensing shell (7), a first output end of the single chip microcomputer is connected with an input end of the power supply control circuit, a second output end of the single chip microcomputer is connected with an input end of the excitation control circuit, output ends of the power supply control circuit and the excitation control circuit are respectively connected with two ends of the LC oscillation circuit, an oscillation output end of the LC oscillation circuit is connected with an input end of the LC oscillation detection circuit, an output end of the LC oscillation detection circuit is connected with an input end of the envelope detection circuit, and, the output end of the trigger circuit is connected with the capture input end of the timer of the single chip microcomputer.