Remote monitoring scheme of air sanitation quality in public places

　　Project introduction:

　　In order to accurately analyze the overall air sanitation quality of public places, especially in densely populated or mobile social public places, it is urgent to establish a set of air sanitation quality monitoring platform with fast information transmission speed, high efficiency and reliable performance. The developed air hygiene quality remote monitoring system can realize the remote transmission of air hygiene quality information of each monitoring sub station and the real-time analysis, monitoring, alarm and early warning of air hygiene quality in the whole monitoring area, and provide decision support for timely taking necessary emergency measures. It has important social significance and practical application value. The remote monitoring platform for air hygiene quality shall be in accordance with China's technical code for health monitoring in public places.

　　System composition:

　　The system is composed of sensor, signal conditioning circuit, on-site single chip microcomputer acquisition terminal, wireless data transmission module (jy-rtu6120-m), on-site monitoring computer and remote monitoring center master station (Modbus host), and the control interface between ventilation and air conditioning and water pump can be reserved.

　　Functional features:

　　Monitor temperature and humidity, wind speed, carbon monoxide, carbon dioxide, etc., and add or delete the measured parameters according to the needs of users; On site wireless data monitoring and remote networked monitoring of monitoring parameters; The existing Internet network or GPRS / CDMA mobile communication network can be selected for data transmission; All weather monitoring and parameter database management of the central master station; It can be used for air hygiene quality monitoring in shopping malls, supermarkets, hotels, bathrooms, swimming pools, dance halls, cinemas, underground garages and other public places. Portable pitching training instrument pitching training instrument gives pitchers the opportunity to train under real conditions and exercise their technical ability of pitching and controlling the ball. The pitching blanket training instrument can provide athletes with the professional pitching experience required to become a real pitching player in difficult competition. Provide accurate quantitative guidance for training with high technology, so as to achieve twice the result with half the effort.

　　System composition:

　　The system is mainly composed of pitching blanket, main controller, terminal detection device, wireless data transmission module and LED display screen. The system structure block diagram and the physical diagram of the pitching blanket of the training instrument and the main controller.

　　Functional features:

　　Wireless monitoring of pitching training status can give indexes such as athlete number, training group, hit rate, hit position, ball speed and so on; The instrument has the advantages of small volume, good portability, friendly interface and simple operation; The anti fatigue design of pitching blanket has good reliability; The supporting software and hardware have achieved autonomy and have good cost performance; It can be popularized and applied to tennis training instrument and other sports training equipment.

　　Important parameters of rtu6120-m:

　　Modbus slave working mode: Standard slave, slave active return;

　　Modbus host working mode: standard host and host do not patrol;

　　Remote data transmission supports GPRS, Ethernet, etc;

　　Data transmission adopts GSM module, which can realize the following functions:

　　GPRS disconnection automatic reconnection;

　　Up to 6 central servers can be connected at the same time as required;

　　Support the addressing mode of fixed IP, domain name resolution and APN private network;

　　Support TCP, UDP, PPP, ICMP, DNS, FTP and other protocols;

　　The number of supported nodes is theoretically countless as long as the server resources allow;

　　Reduce the cost of wiring and the trouble of construction;

　　Support SMS data transmission and SMS parameter configuration;

　　Support phone and SMS wake-up function;

　　Ethernet module is adopted for data transmission to realize the following functions:

　　10Mbps / 100Mbps data transmission mode is suitable for large amount of data transmission;

　　Support TCP, UDP, PPP, ICMP, DNS, FTP and other protocols;

　　The number of supported nodes is theoretically countless as long as the server resources allow;

　　According to the needs of the server, the protocol can support more abundant;

　　Support network data wake-up function;

　　Support special software for local and remote parameter configuration and maintenance;