Direct-reading water meter based on angle measurement and capable of realizing electromechanical separation

Abstract

The invention discloses a direct-reading water meter based on angle measurement and capable of achieving electromechanical separation. The water meter comprises a water meter movement and a control box; the upper end of the water meter movement is in threaded connection with the control box; a turntable is arranged at the upper end of the water meter movement; a circuit board is arranged in the control box; a magnetic angle sensor for detecting the turntable is arranged on the lower surface of the circuit board; the upper surface of the circuit board is electrically connected with a display panel. The direct-reading water meter has the beneficial effects that the turntable at the upper end of the water meter movement rotates along with the change of water flowing through the water meter; amagnetic angle sensor arranged on the lower surface of the circuit board can sense and measure the rotating angle of the magnet in the corresponding turntable; the current water quantity reading of the water meter can be determined by simply converting the rotating angle of the turntable; reading data are fed back to the display panel to be displayed; the control circuit is installed in the control box; no connecting line exists between the control box and the water meter movement; and electromechanical separation is achieved.

Description

technical field [0001] The invention relates to the technical field of direct-reading water meters, in particular to a direct-reading water meter based on angle measurement and capable of electromechanical separation. Background technique [0002] In the existing direct-reading water meter technology, the electronic part and the base meter part cannot be separated electromechanically. If only the base meter of the water meter fails, the entire water meter can only be replaced, and the water company often does not have the ability to repair and replace it by itself. . In addition, the measurement principle of the mainstream direct-reading water meter is based on the principle of photoelectric contrast or reflection, which requires more photoelectric devices and is relatively complex in structure, resulting in complex production processes and low operational reliability. Especially for wet-type photoelectric direct-reading water meters, the photoelectric components and cont...

AI Technical Summary

Problems solved by technology

[0002] In the existing direct-reading water meter technology, the electronic part and the base meter part cannot be separated electromechanically. If only the base meter of the water meter fails, the entire water meter can only be replaced, and the water company often does not have the ability to repair and replace it by itself.

In addition, the measurement principle of the mainstream direct-reading water meter is based on the principle of photoelectric contrast or reflection, which requires more photoelectric devices and is more complex in structure, resulting in complex production processes and low operational reliability.

Especially for wet-type photoelectric direct-reading water meters, the photoelectric components and control circuits are located inside the core of the base meter, and are often sealed with transparent epoxy resin glue to achieve waterproofing. Inside the core, it must withstand the water pressure of tap water; epoxy resin has a certain degree of water absorption, and under the action of water pressure, water will penetrate into the circuit board; the thermal expansion and contraction coefficients of epoxy resin and circuit boards and components are inconsistent. During the alternating process of winter and summer, stress will be generated and the components will be damaged; the transparency of the epoxy resin will gradually deteriorate over time, resulting in problems with the readings; if air bubbles are generated between the photocells, it will seriously affect the accuracy and reliability of the readings sex

[0003] Moreover, both ends of the traditional direct-reading water meter are fixed screw joints. When connecting with water pipe fittings, if the pipe fittings are offset or the pipe fittings are too long or too short, the pipe fittings need to be adjusted and cut, which is inconvenient to install.

Images