System Introduction:
Due to the special nature of pharmaceutical products, the storage environment in the warehouse can seriously affect the quality of drugs. Therefore, it is necessary to do a good job in preventing moisture, dampness, and mold to ensure the quality of drugs. According to relevant regulations, different drugs have different storage temperature requirements, such as vaccines with a storage temperature range of 2-8 degrees.
The monitoring of temperature and humidity is widely used in warehouse management, production and manufacturing, modern logistics, scientific research, and daily life. At present, this system has been applied in many domestic pharmaceutical companies, health and epidemic prevention centers, food companies, chemical companies, tobacco and other industries.

System functions:
1. Truthfully collect and record the temperature/humidity conditions of each space.
2. All temperature/humidity data is collected and recorded on a host computer, and the data can be automatically recorded and stored for a long time according to the requirements of the user.
3. Authorized users can query historical data, perform data analysis, printing, and other operations.
4. When abnormal data occurs, various types of alarms can be triggered, such as computer graphic alarms, sound and light alarms, SMS alarms, etc.
5. Using network software, remote computers within the local area network can share temperature and humidity data after authorization.
System advantages:
1. This scheme is a fully digital scheme, where each temperature and humidity probe outputs a directly networked digital signal.
2. Due to the use of advanced digital and network technologies, this solution is wired according to the network, which is convenient and economical.
3. Because each temperature and humidity probe outputs a directly networked digital signal, the attenuation during signal transmission does not affect system accuracy, and the transmission distance is long. Each outlet "one line bus" can connect 32 temperature and humidity probes for a distance of up to 100M.
4. The collection module automatically recognizes the type and quantity of sensors, and is easy to configure and expand. Based on the on-site installation conditions, the installation location and number of modules can be appropriately selected to reduce costs.
5. A multi substation communication protocol supporting a distance of 1.2 kilometers is used between the upper computer and the acquisition module
6. Using configuration software technology based on the Win98/NT/2000 platform, personalized human-machine interfaces can be easily and quickly generated according to different customer needs.
7. Standardized bus design allows for easy expansion of control and other functions, as well as interconnection with other systems.
8. Adopting a low-power design, only power needs to be supplied to the collector, no power needs to be supplied to the sensors, there are few on-site power supply points, and construction is convenient.

Multi functional data acquisition and control center
ITU bus:
1. Support digital temperature sensors and ITU bus modules
2. Support mixing temperature and humidity probes and ITU modules on a three core transmission line
3. Supports 8 channels and a total of 32 various ITU hybrid connections
1-wire bus:
1. Support digital temperature and humidity sensors
2. Support digital CO2 sensors
3. Support 1-wire protocol sensor same line mixed fabric
4. Automatically identify the number of sensors,
5. The module and the upper computer use RS485 communication
6. Provide DLL libraries and routines, supporting multiple configuration software
7. One upper computer can carry 127 modules
8. Baud rate 9600/19200/38400 optional
9. 485 bus transmission distance: 1200 meters