Scheme design of intelligent ultraviolet sterilizer

Microbes are ubiquitous in human living environment. Beneficial microbes can help people live a healthy life, but harmful microbes can cause diseases in humans and animals, cause serious economic losses, and even endanger life in severe cases. When the resistance of the human body is low, a small amount of harmful microorganisms may also cause human illness. Therefore, in the struggle between humans and pathogenic microorganisms, disinfection has become the most direct and convenient means. With the continuous development of science and technology, human knowledge and material needs continue to increase. Traditional chlorine disinfection has long been replaced by ultraviolet disinfection with pure physical action, no secondary pollution, high sterilization efficiency, safe and reliable operation, simple maintenance, low cost and small footprint. However, the ultraviolet sterilizers currently on the market vary greatly, and it is impossible to count the disinfection dose and monitor the disinfection effect in real time. When the equipment is working, it will produce a large amount of harmful ultraviolet rays, which has certain safety risks. The intelligent ultraviolet disinfection monitor guides the development of a real-time monitoring, safe and effective through the development of real-time monitoring technology for disinfection effects, dual infrared detection and protection technology, remote control technology, ozone-free sterilization technology, anti-aging technology, Internet technology and delay function. And universal economic products. It has a guiding role in improving basic ultraviolet disinfection equipment and opening up more application markets.

1. Background of Intelligent UV Disinfector

1.1 Theoretical basis of ultraviolet sterilizer

Ultraviolet disinfection is a physical disinfection method. The main principle is to use ultraviolet rays with a wavelength of 240 to 280 nm to destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in microbial cells so that they cannot be split and replicated to achieve disinfection. purpose. In the 1970s, ultraviolet sterilization technology began to be used in sewage, industrial disinfection and other fields. At present, the ultraviolet disinfection technology in western countries is widely used, mainly in the field of medical and health, water treatment and air conditioning and ventilation systems. Compared with the research and application of ultraviolet disinfection technology abroad, my country started late. However, as people's awareness of health and environmental protection has increased, UV disinfection technology has gradually been recognized and accepted by the public. After 50 years of development, UV disinfection technology has developed into a more mature and efficient environmental protection disinfection technology.

1.2 Design principle of intelligent ultraviolet disinfection monitor

In order to make up for the gap of traditional ultraviolet disinfection equipment in disinfection effect monitoring and solve the main safety hazards that existed, through the development of 7 superior technologies, to achieve the expected goal of intelligent ultraviolet disinfection monitor. Its advantageous technologies include: real-time monitoring technology for disinfection effect, dual infrared detection and protection technology, remote control technology, ozone-free sterilization technology, anti-aging technology, Internet technology and delay function. The real-time monitoring system of intelligent ultraviolet disinfection monitor is composed of network communication module, data acquisition and analysis module and output module based on single chip microcomputer. The data collection module calculates the total dose of ultraviolet light irradiation in one working time by the product of the ultraviolet light irradiation dose during the working time of the equipment, in this way, collects the data of each work of each equipment and records it , Stored in the background data system. The data analysis module refers to the data collected from the previous equipment launch trial and a large number of repeated tests, and a default value is preset in the background, that is, the total dose value of ultraviolet light irradiation, and the default value is used as a standard to judge whether disinfection is reached Effect, record the success or failure of a sterilization work of the equipment, and display the analysis results on the display screen of the equipment. Through this module, the data collection, data storage, remote monitoring and disinfection effect feedback of the intelligent ultraviolet disinfection monitor are realized.

Second, the development of intelligent ultraviolet disinfection monitor program

This product is an ultraviolet sterilizer based on single chip microcomputer network communication technology and dual infrared sensor technology, which integrates timing and delay switches.

In order to avoid people entering the disinfection place by mistake, affecting the disinfection effect and their own health. The hardware of the intelligent ultraviolet disinfection monitor draws on dual infrared sensor technology. The dual infrared sensor is composed of a microcontroller, two infrared detectors, a radio frequency card reader and an audible and visual alarm system. The microcontroller collects the data of each subsystem in real time, and after data fusion processing, it effectively controls each subsystem according to the processing result.

Two infrared detectors are connected to the microcontroller through two interrupt ports. Each infrared detector is composed of an infrared transmitter and an infrared receiver. When no person enters the channel, the infrared transmitter and the infrared receiver are always in a connected state; when someone enters the channel, the infrared transmitter and the infrared receiver are in a disconnected state. The image monitoring system monitors personnel in and out of the channel in real time. At the same time, dual infrared is more sensitive to ultraviolet leak detection. Once a problem occurs, an audible and visual alarm system will be activated. The radio frequency card reader receives the matching magnetic card information and starts the ultraviolet sterilization process. The monitoring terminal receives data and analyzes it to realize data sharing.

The intelligent ultraviolet disinfection monitor uses cloud data to receive disinfection data in real time. The remote monitoring system mainly includes two ports of PC server and mobile client, as follows:

(1) PC server program, need to provide real-time data reception monitoring interface and other network connection ports. It generally includes functions such as data reception and Internet access. (2) The mobile client provides access to the server network interface service and displays monitoring information. It mainly includes setting connection information, connecting to server program and displaying monitoring information. The system can realize the real-time monitoring of the data in the PC, and the mobile client can directly access the server and monitor the data through the network, and has a remote control function.

Conclusion

The intelligent ultraviolet disinfection monitor is composed of a data acquisition module, a network communication module and a data analysis module. Through a lot of repeated tests, the real-time monitoring effect of the device is good, it can effectively achieve the expected effect and meet the market demand, and has a very broad development prospect.