Refrigerator inspection line system structure
Product description:
Refrigerator inspection line system structure
It is mainly used for temperature monitoring in refrigerator production line.
I. overview of the programme
1) this scheme is a full digital scheme, the output of each temperature probe is directly networked digital signals.
2) due to the adoption of advanced digital and network technology, the scheme is convenient and economical according to the network wiring.
3) because each temperature probe output directly to the network digital signal attenuation, signal transmission process does not affect the accuracy of the system, and the transmission distance is long, each outlet can be connected with the 64 temperature sensor distance up to 200M.
4) the acquisition module automatically identifies the type, quantity, configuration and expansion of the sensor. It can select the location of the module and the number of modules in order to reduce the cost according to the installation conditions.
5) a multi station communication protocol with support distance of 1.2 km is used between the host computer and the acquisition module
6) using the configuration software based on win98/nt platform, it can generate personalized man-machine interface conveniently and quickly according to different customer requirements.
7) standardized bus design facilitates the expansion of control and other functions and interconnections with other systems.
8) low power consumption design, only the power supply for the acquisition and controller, no need to supply power to the sensor, less on-site power supply, convenient construction.
Two. Product Brief
1. acquisition module
Temperature measurement characteristics:
Support the United States DALLAS series of 1-wire bus digital temperature sensor ---- temperature measurement points: 1~64 points, temperature range: -55 ~ +125 degrees Celsius, temperature measurement accuracy: + 0.5 degrees Celsius, temperature measurement resolution: 9~12 (0.0625 degrees Celsius). Temperature measurement speed: > 40 points /s. Support temperature measurement
Cable length: 200M, sensor support two or three wire connection mode, automatically identify the number of sensors, ID automatic sorting.
Communication characteristic of same host computer:
The module and the host computer adopt RS485 communication, an upper computer can take many modules, baud rate 9600/19200/38400 optional. And can be extended to Ethernet interface communication module.
Power requirements:
12V/24V/48V input (external, optional).
Work environment:
Module operating temperature: -25 ~ 85 DEG C.
Description:
The module is made of plastic / metal shell, which is more suitable for the worse site requirements. The terminal is made of standard interface, which makes the field connection more simple and convenient. The module uses the latest technology to support the American DALLAS full range 1-wire bus digital temperature sensor (DS18B20), and supports "two lines" or "three lines" in two ways, so that users are more convenient to use. Each module can connect seven temperature measuring cables, each cable can be installed up to 64 temperature points. The module automatically detects the number of sensors, and the ID automatically sorts. Real time refresh data buffer. The standard RS232 communication mode is used between the module and the host computer, and the communication conversion module is not needed.
Related products:
DS18B20 "one wire bus" digital temperature sensor;
Ultra small stainless steel metal package temperature sensor;
RS232 interface multipoint temperature acquisition module;
RS485 interface multipoint temperature acquisition module;
Ethernet interface multipoint temperature acquisition module;
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