I. Overview
Today, with the increasing degree of informationization, the computer room that plays an important role in information processing and exchange is the data transmission center, data processing center, and data exchange center of the entire information network project. In order to ensure the normal operation of the equipment room and staff have a good working environment, the monitoring of the temperature and humidity of the equipment room is indispensable. A reasonable normal temperature and humidity environment is an important guarantee for the normal operation of the equipment room.
The requirements of the computer room site are mainly based on the national standard "GB2887-89 calculation site technical conditions", "GB9361-88 calculation site safety requirements" and "GB50174-93 computer room design specifications." With the continuous development of computer technology and the extensive use of computer systems, the computer room environment must meet the technical requirements of computer equipment for temperature, humidity and other technical requirements.
The temperature and humidity of the equipment room are the necessary conditions for the normal operation of computer equipment. We must install a temperature and humidity sensor in a reasonable position in the equipment room so that the temperature and humidity can be monitored in real time for 24 hours, and each can be displayed on the monitoring host in the central control room in real time. Temperature and humidity measurements of the location. Once the value exceeds the upper and lower limits of the preset temperature and humidity, alarms can be generated by changing the color of the corresponding position on the monitoring host. In order to monitor the temperature and humidity conditions of the entire equipment room as a whole, a temperature and humidity transmitter may be installed at the air inlet of the new air blower and the air inlet of the main air conditioner to detect temperature and humidity.
In addition to room temperature monitoring, temperature and humidity monitoring can also be widely used in places where various industries such as biopharmaceuticals, sterile rooms, clean workshops, telecommunication banks, libraries, archives, museums, and intelligent buildings require temperature and humidity monitoring. And fields.
Second, the application of features ☆ high-performance temperature and humidity transmitter, high accuracy and stability.
☆ digital signal transmission, convenient wiring, signal transmission distance.
☆ open communication protocol, the system is easy to expand.
☆ configuration software interface, system stability is guaranteed.
☆ The software features rich, practical, easy maintenance and function upgrades.
Third, the system hardware configuration 1, the host computer hardware requirements:
1 Microsoft Windows 2000 (Chinese version) or Windows XP operating system (Chinese version).
2IBMPC and its compatibles, Pentium 500MH CPU, 64M or more memory.
More than 310G hard disk, more than 200M free hard disk space.
4SVGA graphics card PCI or AGP graphics card, more than 16M memory 2, on-site hardware configuration:
1RS485/232 conversion module 2JCJ100N digital temperature and humidity transmitter 3 AC and DC power converter 220VAC/12VDC2A or on-site to provide 12DC/2A DC power supply
Fourth, system structure 1 system uses COM1 serial port to connect RS485/232 converter to realize the data acquisition.
2 system communication mode: RS485/232, two-wire system Data+, Data-, baud rate: 9600BPS
3 working voltage: 220VAC ± 10%, or 12VDC ± 10% 2A
Fifth, the system configuration instructions 1, JCJ100N digital temperature and humidity transmitter JCJ100N digital temperature and humidity sensor sampling card has a 10-digit double-channel successive approximation A / D converter, standard RS-232 or 485 communication interface. This product uses recursive average digital software filtering and hardware circuit filtering combined filter method, so that the external interference to the sampling as possible to a minimum, full-scale accuracy, stability, strong consistency, good response speed. JCJ100N
The standard 485 serial interface can be used to form a multi-point temperature and humidity measurement system with a computer (up to 256 digital temperature and humidity sensors can be connected).
The main parameter description:
☆Working Voltage: 12V～24VDC
☆ temperature range: 0 ~ 50 °C -20 ~ 60 °C -40 ~ 80 °C, other noted.
☆ Accuracy: Better than ±0.5°C (0～50°C)
☆ humidity measurement range: 0 ~ 100% RH
☆ Accuracy: ±3%RH (20% to 90%RH, 23°C); ±2%RH (20% to 90%RH, 23°C)
☆ Signal output: Standard RS485 interface ☆ Address setting: Built-in dial switch, can be set to 32 address bits (hex 00 ~ 1F)
2, data software instructions ready to use: the software is easy to install, directly click on the "Setup.exe" run to complete the installation, without the need for other settings, you can use the real-time installation.
A variety of interfaces: real-time digital display, real-time curves, historical curves, data reports, configuration reports and other data display.
Flexible configuration: The screen, text and curve can be flexibly configured according to the measurement requirements. The picture is vivid and vivid.
Data storage: automatic data storage, data export (save as) Excel.
Data Printing: Supports report printing, historical curve printing, and printing in Excel.
Data query: By inputting the query time, you can query the data record and curve record corresponding to the required point to be measured.
Monitoring alarm: When the monitored value reaches the alarm condition, an alarm is issued by changing the color of the corresponding data.
Stable and accurate: The software runs stably, has strong anti-interference ability, high data acquisition accuracy, and meets high standard data monitoring requirements.