[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduce a national patent for invention invention – upsampling and separation of non-magnetic remote water meters. The patent was applied for by Jiangsu Saida Electronic Technology Co., Ltd. and was authorized to be announced on November 21, 2017.
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 amount of water repellent treatment, which undoubtedly increases 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 there is a possibility that it may be disturbed by an external magnetic field. At this time, the sensor will detect a constant magnetic field. Signal, the sensor can not count.
Summary of the Invention
The purpose of the present invention is to provide a water meter that is easy to maintain and saves manpower and material resources.
The present invention adopts the following technical solutions: an up-sampling and separating magnetic-free 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-shaped 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 groove, a metal conductor is arranged at the root of a pointer set in the dial, and two acquisition sensors are arranged on the signal acquisition and transmission device, and the sensor is an LC composed of an inductor and a capacitor. The free resonance damped oscillator and gives the oscillator pulse excitation signal at regular intervals. When the pointer rotates, the conductor approaches the inductor and the damping oscillation amplitude rapidly decays.
The figure is a schematic structural view of the invention
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 signal 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 status of 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 deal with and encode the signal received, send to the storage unit temporarily and then issue. A power supply unit is provided on the signal acquisition and transmission device, and the power supply unit supplies power to the single-chip microcomputer, the communication unit and the 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 water flow volume is achieved by measuring the ringing time of the damper, which may be greatly reduced by the disturbance.
For more information, please download the full specification of the patent.
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