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Description of the Invention The utility model relates to a water quantity measuring device, in particular to a self-generating water meter based on radio frequency technology.
BACKGROUND OF THE INVENTION With the rapid development of China's economy, the shortage of freshwater resources in China has become increasingly serious and has gradually become a “bottleneck†for sustainable development in China. According to statistics from related departments, China’s per capita water resources have only 2200 cubic meters, and currently China’s three points Two of the large and medium-sized cities are facing water shortages. For example, in Beijing, per capita water resources are less than 300 cubic meters, which is only 1/30 of the world average level, similar to desert countries such as Israel. Facing the severe situation of China’s water resources, how to reduce the actual water consumption of the cities to the minimum required by the society has become a difficult problem for the water resources management department. At present, the conservation of water resources includes two aspects: First, vigorously promote the application of new water-saving technologies; the second is to strengthen the scientific management of water conservation. In a sense, strengthening scientific management of water-saving is the most important task at present. To strengthen the scientific management of water conservation, we must first put scientific management of water conservation into the orbit of legalized management; second, we must accelerate research and development of advanced science and technology and facilitate application. Water Conservation Scientific Management Instrumentation. In order to strengthen the scientific management of water conservation, it is necessary to change the status quo of civilian water meter management. The status quo is as follows: Meter charging has always used the method of manual meter reading. The work is very tedious and error-prone. Often, users are owed, late or missing. Water fees and other issues. Therefore, the water meter management department is implementing a prepayment management model. Through the user's payment of water after payment, the phenomena of overpayment, late payment, and missed payment of water fees are fundamentally eliminated, and meter reading, charging, and control are realized in a trinity, which not only saves the cost of human resources, but also strengthens the “water is a commodityâ€. The concept is conducive to promoting the integrated management of water conservation and water management departments.
SUMMARY OF THE INVENTION The technical problems to be solved by the present invention are: to overcome the deficiencies of the prior art, to provide a simple structure, can be disassembled, and realize detection and electronic display of water on the basis of the original mechanical water meter to realize concentration of multiple water meters. Unified management, with self-generating and alarm functions, combined with radio frequency technology to achieve meter reading and water recharging functions, water heating and disinfection functions of self-generating water meters based on RF technology. 
The figure shows a front view of a self-generating water meter based on radio frequency technology
The user water diversion pipe is provided with an electric valve. The electric valve is connected with the processor through a valve control module. The valve control module is an AF259B motor drive chip connected with a processor through a peripheral circuit, and the electric valve is an electric ball valve. The glass at the count dial is a convex lens. A voltage stabilization circuit and a battery management chip are disposed between the hydraulic generator and the battery, and the hydroelectric generator is a pipeline type hydroelectric generator. The hydroelectric generator and the heating device are disposed on a water outlet of a user's main water pipe interface or a mechanical water meter. Both ends of the heating device are provided with a temperature sensor.
The heating device is a bottomless cylindrical waterproof heating wire, and the ultraviolet sterilizer passes through a cylindrical waterproof heating wire, and both are installed in a user's main water pipe interface or a water outlet of a mechanical water meter through a metal support. The outer wall of the device is not in contact with the user's main water pipe interface or the inner wall of the water outlet of the mechanical water meter. The ultraviolet sterilizer is not in contact with the inner wall of the cylindrical water-proof heating wire, and the heating device is connected to the power module through an electromagnetic switch. Switches and temperature sensors are connected to the processor.
The radio frequency transceiver circuit is an FM1702SL chip and is disposed on the side of the radio frequency card jack on the control alarm device. The radio frequency card is a Mifare card, and the radio frequency card is provided with an elliptical antenna, a low-pass filter and a receiving circuit. A mutual inductance coil and a processing chip, the RF card includes a user RF card and a meter reading RF card. One end of the meter-reading RF card is hinged on the housing base, the processing chip in the meter-reading RF card is connected with the controller in the housing base, and the controller is connected with the camera, the data interface and the battery. The liquid crystal display module is connected with the processor, and a date display area, a time display area, a water information display area, a valve state display area, a water amount alarm area, a unit price display area and a strong magnetic alarm area are set on the segment code LCD screen. The liquid crystal display module is a segment code LCD screen, and the processor is a PLC16F946.
The utility model has the beneficial effects that the water quantity detection and the electronic display are realized on the basis of the original mechanical water meter, the centralized and unified management of multiple water meters is realized, the self-power generation and the alarm function are provided, and the meter reading and the water recharge function are realized in combination with the radio frequency technology. , With water heating and disinfection, easy to use. A plurality of mechanical water meters are connected to the control and alarm device through the housing as a whole, and both are connected to the user's main water pipe through the branch pipes to realize the centralized setting and management of the water meter, reduce the space occupancy, and facilitate the operation of people. And through the addition of radio frequency technology, people can use the RF card to perform meter reading and water recharge operation on the water meter, which is convenient for people to use and saves the amount of meter reading personnel's labor.
The utility model is provided with a user's radio frequency card and a meter reading radio frequency card, in particular the setting of the meter reading radio frequency card, and realizes the radio frequency card to realize the information collection of multiple water meters through a one-card meter reading operation and rotates at the same time. On the base of the housing, the camera photographs and stores the counting dial on the water meter. At the same time, a hydroelectric generating device is installed to generate electricity through the large internal water pressure of the water pipe. The utility model supplies power for the utility model and stores the surplus electricity to solve the environmental pollution caused by the power supply of the dry battery.
At the same time, the utility model utilizes the original mechanical water meter, sets the magnet and the reed pipe on the turntable of the mechanical water meter, realizes the calculation of the water volume through the rotation of the turntable, effectively utilizes the original eliminated mechanical water meter, and realizes the recycling of the waste. , Meet the requirements of sustainable development, with two kinds of mechanical and electronic water display, at the same time counting the glass at the turntable is a convex lens, has a magnifying effect, to facilitate the acute observation of people, but also easy to take pictures. A voltage regulator circuit and a battery management chip are also provided to manage the battery and perform selective charging according to the condition of the battery to prevent the battery from being continuously charged and cause an accident. The battery supplies power to the control alarm device and multiple water quantity detection modules. Power generation wastes electricity. Through the magnets on the radio frequency card, the conduction of the reed switch on the radio frequency transceiver circuit is realized, and the radio frequency card is inductively powered through the mutual induction coil on the radio frequency transceiver circuit to exchange information between the radio frequency card and the processor, thereby achieving meter reading, Renewals and payment operations.
In addition, the utility model is provided with an electric water valve, which can be closed and opened by the signal sent by the processor, and the water valve is automatically closed once a month under the control of the processor to prevent scale from performing on the water valve that is opened for a long time. erosion. At the same time, a heating device is also provided. At the same time, the heating device is in the form of a bottomless cylinder, and it is installed on the water outlet of the user's main water pipe connection or mechanical water meter. While not blocking the flow of water, the contact area with water is increased to facilitate heat transfer. , To a certain extent, solve the problem of too cold or frozen ice water in winter. By providing an ultraviolet ray sterilizer in the heating device, due to the presence of the heater, the heater or the inner wall of a nearby pipeline becomes a breeding ground for bacteria, further polluting the tap water, and the setting of the ultraviolet sterilizer not only solves the problem of bacterial hotbeds. It also sterilizes tap water and increases the quality of tap water. The utility model realizes the conversion of mechanical signals of water quantity into electronic signals by means of a turntable, two reed pipes and a magnet. A certain angle is set between the two reed pipes, effectively solving the impact of the water hammer effect when two When the reed switch is closed at the same time, it indicates that there is strong magnetic interference around it. Then a strong magnetic interference alarm is displayed on the liquid crystal screen of the segment code, and the electric valve is closed by the processor to prevent the measurement error caused by the strong magnetic.
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[Meter's Latest Patent] Self-Generating Water Meter Based on RF Technology
[Chinese instrument network meter patent] creative limit, instrumentation invention. Today we introduce a national invention-invented patent—a self-generating water meter based on radio frequency technology. The patent was applied for by the Henan Institute of Engineering and was authorized on December 21, 2016. The technical proposal of the utility model is: a self-generating water meter based on radio frequency technology, comprising a power supply module, a water quantity detection module and a control alarm device, wherein the power supply module is connected with the control alarm device and is all disposed in the casing. The detection module is connected with the control alarm device, and is embedded in a housing on the lower side of the control alarm device. The water quantity detection module is at least two. The water inlet of the water quantity detection module passes through the branch pipe and the total number of users installed on the housing. The water pipe interface is connected, and the control alarm device comprises a processor, a liquid crystal display module connected with the processor, a radio frequency receiving module, a heating device and an ultraviolet sterilizer, the power module comprises a hydro generator and a battery, and the water quantity detection module comprises: A mechanical water meter and a dry reed pipe, the water outlet of the mechanical water meter is connected with a user water diversion pipe, and both the dry reed pipe and the battery are connected with a processor, and two of the dry reed pipes are arranged at a certain angle on the mechanical water meter. On the meter housing at the counting dial, a magnet is arranged on the counting dial of the mechanical meter, Frequency receiver module comprises a RF transceiver circuit and RF card, are sequentially disposed between the radio frequency transceiver circuit and the power supply module and reed mutual inductance coil, the radio frequency magnetic button is provided on the card.