[Meter's latest patent] large pointer up-separation non-magnetic remote water meter

Content Description

The present invention relates to a measuring instrument, and more particularly to a meter for remotely reading water meter readings.

Background of the invention

Water meter as a measuring instrument is mostly a measure of the cumulative flow of water. It is generally divided into two types: volumetric water meter and speed water meter. It uses the direct mechanical movement process of the mobile wall volume measurement room or the effect of the flow velocity on the wing wheel to calculate the flow volume of the water flowing through the tap water pipe. The existing water meters are In order to solve the above problems, a collecting unit, a near-field communication unit, and related signal processing are installed in the water meter to install the water plant at the inlet end of the doorway of each user's house, and the conventional water meter requires the staff to observe and record one by one. The unit sends the meter readings to the worker's hand-held terminal so that the worker can read the water meter in batches. The method adopted today is to add a small magnet to the pointer of the old-fashioned water meter, and add a magneto-sensitive sensor and an external acquisition circuit board inside the water meter. The sensor is connected to the external acquisition circuit board through a wire and passed through. The number of turns of the pointer is measured to achieve the purpose of measuring water consumption. This kind of water meter is set inside the water meter because the above circuit components are installed inside the water meter. It needs to be treated with a certain degree of water repellency. It will undoubtedly increase the quotation of the water meter. The circuit board part and the sensor part are wearing parts, and the whole water meter needs to be opened to repair during maintenance. Even the water meter needs to be completely replaced. This wastes manpower and material resources. It also wastes material, and its signal transmission is through the magnetic field, so that there may be interference from the external magnetic field. At this time, the sensor will detect constant magnetic. Signal, the sensor can not count; In addition, if the water flow is too large, the pointer speed is accelerated, there will be missed detection, resulting in measurement errors.

Summary of the Invention

The purpose of the present invention is to provide a water meter that is easy to maintain, saves manpower and material resources, and has a small error.

The present invention adopts the following technical solutions: a large pointer upsampling and separation of a non-magnetic remote water meter, including a water meter body, a signal acquisition and transmission device at the upper part of the water meter, and an arc groove at the side of the signal acquisition and transmission device near the dial A protective cover covering the dial of the water meter is arranged at the edge of the arc groove, a monitoring pointer is set in the dial, the length of the monitoring pointer is slightly smaller than the diameter of the dial, and the rotation axis is set at the center of the dial, and the metal conductor is arranged at the root of the signal. The acquisition and transmission device is provided with a collection sensor. The sensor uses two LC free-resonance damped oscillators composed of two inductor coils and two capacitors, and periodically gives an oscillator pulse excitation signal. When the pointer rotates, the conductor approaches the inductor and damps the oscillation amplitude. Rapidly decay.

The figure is a schematic structural view of the invention

Set the scale on the dial circumference. The signal acquisition and transmission device is detachably fixed on one side of the upper part of the water meter body, and the fixing manner is a click connection or a bolt connection. A processing unit for determining the flow rate is set in the signal acquisition and transmission device. The processing unit is connected to the acquisition sensor and detects the damping oscillation attenuation condition in the acquisition sensor to measure the number of rotations of the pointer. The processing unit is a single-chip microcomputer.

A communication unit is set in the signal acquisition and transmission device. The communication unit is an M_BUS or RS485 communication circuit, and the communication unit is controlled by a single-chip microcomputer.

Connect the storage unit on the one-chip computer, the one-chip computer will receive the signal processing and encode, send to the storage unit temporarily and send out and set up the power unit on the signal acquisition and transmission device, the power unit supplies power for the one-chip computer, communication unit and sensor.

Compared with the prior art, the invention separates the signal acquisition and transmission device from the water meter body, is convenient to maintain, and can replace circuit elements according to actual conditions, which saves time and manpower, avoids waste of materials, and the invention Measuring the volume of the water flow is achieved by measuring the ringing time of the damping, which may be greatly reduced by interference, and using a large pointer as a monitoring pointer, the rotation speed thereof is slow and the monitoring is accurate.

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