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Wireless remote meter design scheme based on PICl6F628A chip

by:Sincerity     2020-10-29
Abstract: wireless remote meter design scheme based on PICl6F628A chip information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Abstract: with the progress of social and economic, housing commercialization development is rapid, residential water, electricity, gas, heat meter reading and billing problem increasingly prominent. , how to effectively solve the entry fee of technical problems, to provide a reasonable and complete, the implementation of the system. More flow meter manufacturers choose model price quote you are welcome to inquire, here is based on PICl6F628A chip wireless remote meter design article details. With the progress of social and economic, housing commercialization development is rapid, residential water, electricity, gas, heat meter reading and billing problem increasingly prominent. , how to effectively solve the entry fee of technical problems, provide a reasonable and complete, the implementation of the system management plan, need to enterprise, scientific research and public utilities management departments work together. The article puts forward a kind of wireless intelligent remote water meter system is used to solve the problem. With the progress of social and economic, housing commercialization development is rapid, residential water, electricity, gas, heat meter reading and billing problem increasingly prominent. , how to effectively solve the entry fee of technical problems, provide a reasonable and complete, the implementation of the system management plan, need to enterprise, scientific research and public utilities management departments work together. Currently, residential water, electricity, gas, heat meter remote meter reading system in a variety of forms, but in a cluttered market, technically it is not yet mature, not a full system implementation of the management scheme approved by the market. Traditional cable meter reading system wiring complexity, poor reliability, maintenance difficulties, difficult to implement management upgrade, can not meet the requirement of the renovation of the old building market; Emerging GPRS, SMS and GSM network meter reading way use expensive, not suitable for large area promotion. Wireless intelligent remote water meter system with its convenient installation, maintenance, fast, without being limited by the installation environment and wiring etc, and become the dominant system of intelligent water meter industry management. The system generally consists of four parts, namely water company computer data management system, field data download ( Copying machine) , data concentrator, wireless remote intelligent water meter. The wireless intelligent remote water meter is a fundamental part of the whole system, is the generation of information unit. It is generally on the basis of the original base table, adding new sensor and control circuit board. 1, wireless intelligent remote water meter to realize the function of wireless communication in the environment of users use easily affected by external environment, such as between building environment and residential floor height, the distance between the middle floor, city wireless communication environment of interference sources, residential house type structure have largely affected. Table with the installation of the building, therefore, the installation of the concentrator, plot the installation of the concentrator, especially building concentrator wireless communications antenna, concentrator wireless communication antenna. If the hand-written copy in building concentrator and storied building concentrator can be installed in the corridor, outdoor antenna can channels. If the village take building concentrator concentrator, building concentrator suggest installation on the roof. Installed on the roof of the concentrator can use solar or 220 v mains power supply. Determined by analysis of wireless intelligent remote water meter should implement the following functions: automatic timing report or quantitative water function; According to the concentrator command control meter valve switch function; Automatic report far eastone meter be destroyed or disturbed, water anomalies ( Too big or too small) And the function of the battery power shortage; Set the parameters according to the needs of the management system function. 2, the design of the hardware circuit of wireless intelligent remote water meter wireless communication frequency selective public spectrum ( ISM frequency band) 。 The table USES batteries, to guarantee the mains power failure, do not affect table of information acquisition and storage. According to the requirement of the industry standard, the service life of the battery is more than 6 years, so that the whole design should fully consider the power consumption of the product. Battery choose high-energy lithium-ion batteries, by selecting the low power consumption device, set precision micro power works to ensure that the service life of batteries. By adopting double sensors, software error correction, anti-jamming technology, encryption technology to ensure the accuracy of the data acquisition, storage and transmission. 2. 1 the composition of wireless intelligent remote water meter unit and the function of wireless intelligent remote water meter mainly includes the following units: single chip microcomputer, input collection, wireless data transmission and power supply, valve control, voltage detection unit. The structure diagram is shown in figure 1. 2. The hardware design of each unit circuit is 2. 2. 1 selection sensor input signal acquisition unit low contact resistance, no standby power consumption, reliability, good small dry reed pipe. As magnetic sensor in the magnet into the dry reed pipe and the critical zone, dry reed pipe will produce many times and, lead to repeated measurement. In order to improve the measurement accuracy and anti-interference, using double sensor design in the product. No matter how many times a single sensor and one according to the absorption time count, only the absorption one time in the two sensors and is an effective measure. The design units of 0. 1 t。 When two sensors and timeliness, believed to be outside strong magnetic interference, water meter do close the valve. Set MCU RB0, RB4 pin to test for the end.
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