Data transmission center, data processing center and data exchange center. In order to ensure the normal operation of the equipment in the computer room, the staff has one
A good working environment is essential for monitoring the temperature and humidity of the computer room, and a reasonable and normal temperature and humidity environment means that the equipment in the computer room is correct.
An important guarantee for normal operation.
The site requirements of the computer room are mainly based on the national standard GB 2887-89 "Technical Conditions for Computing Sites".
GB 936 1-88 Safety Requirements for Computing Sites and GB 50174-93-93 Code for Computer Room Design. By calculation
With the continuous development of computer technology and the extensive use of computer systems, the computer room environment must meet the requirements of computer equipment for temperature and humidity.
Technical requirements.
The temperature and humidity of the computer room are the necessary conditions for the normal operation of computer equipment, and we must install them in a reasonable position in the computer room.
The temperature and humidity sensor is installed to realize 24-hour real-time monitoring of temperature and humidity, which can be implemented on the monitoring host in the central control room.
Displays the temperature and humidity measurements at each location. Once the value exceeds the preset upper and lower limits of temperature and humidity, it can be monitored on the monitoring host.
Give an alarm by changing the color of the corresponding position value. In order to monitor the temperature and humidity of the whole computer room, it can be used in fresh air.
The air inlet of the machine and the air return of the main air conditioner are respectively equipped with temperature and humidity transmitters to detect the temperature and humidity.
Temperature and humidity monitoring is not only used in computer room monitoring, but also widely used in biopharmaceuticals, sterile rooms, clean factories, electricity and so on.
Information base, library, archives, cultural relics museum, intelligent building and other places and fields that need temperature and humidity monitoring.
Second, the characteristics of the application scheme
☆ Adopt high-performance temperature and humidity transmitter, with high precision and good stability.
☆ Digital signal transmission, convenient wiring and long signal transmission distance.
☆ Open communication protocol is convenient for system expansion.
☆ Configure the software interface to ensure the stability of the system.
☆ The software is functional, practical and easy to maintain and upgrade.
Third, the system hardware configuration
1, PC hardware requirements:
① Microsoft Windows 2000 (Chinese version) or Windows XP operating system (Chinese version).
(2) IBM PC and its compatible computer, Pentium 500MH or more, memory 64 m or more. ..
(3) 10 g hard disk, with more than 200M free hard disk space.
④ SVGA graphics card PCI or AGP graphics card, 16M or more memory.
2. On-site hardware configuration:
① RS485/232 conversion module
② JCJ 100N digital temperature and humidity transmitter
③ AC /DC power converter 220VAC/ 12VDC 2A or field supply12DC/2DC power supply.
Fourth, the system structure
① The system uses COM 1 serial port to connect RS485/232 converter to realize data acquisition.
② System communication mode: RS485/232, double-wire Data+, Data-, baud rate: 9600BPS.
③ Working voltage: 220VAC10%, or 12VDC 10% 2A.
Verb (abbreviation for verb) system configuration description
1, digital temperature and humidity transmitter
The sampling card of digital temperature and humidity sensor has a 10 bit dual-channel successive approximation A/D converter, standard RS-232 or
485 communication interface. This product adopts the filtering method of recursive average digital software filtering combined with hardware circuit filtering, which makes the outside world right
Minimize the interference of sampling, with high full-range accuracy, strong stability, good consistency and fast response.
Through the standard 485 serial interface, it can form a multipoint temperature and humidity measurement system with a computer (up to 256 digital temperature and humidity sensors can be connected).
Description of main parameters:
Working voltage: 12V ~ 24VDC
☆ Temperature measuring range: 0 ~ 50℃-20 ~ 60℃-40 ~ 80℃, unless otherwise specified.
☆ Accuracy: better than 0.5℃ (0 ~ 50℃)
☆ Humidity measurement range: 0 ~ 100% RH.
☆ Accuracy: 3% RH (20% ~ 90% RH, 23℃); 2% relative humidity (20% ~ 90% relative humidity, 23℃)
☆ Signal output: standard RS485 interface.
☆ Address setting: Built-in dip switch can set 32-bit address bits (00 ~ 1f in hexadecimal).
2. Data software description
Ready-to-use: The software is easy to install. Just click "Setup.exe" to complete the installation, and no other settings are required.
Use, real use.
Various interfaces: with real-time digital display, real-time curve, historical curve, data report, configuration report and other data display parties.
Type.
Flexible configuration: pictures, characters and curves can be flexibly configured according to the measurement needs, and the pictures are concrete and vivid.
Data storage: automatic data storage, data export (save as) Excel.
Data printing: supports report printing, historical curve printing and Excel printing.
Data query: by entering the query time, you can query the data records and curve records of the required measuring points in the corresponding time.
Monitoring alarm: when the monitoring value reaches the alarm condition, an alarm is issued by changing the color of the corresponding data.
Stability and accuracy: the software runs stably, has strong anti-interference ability and high data acquisition accuracy, and meets the requirements of high-standard data monitoring.
Beg.