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Intelligent Temperature Data Acquisition Module(RS232)
- Model: SLMT2-1
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SLMT2-1 Series Intelligent Temperature data acquisition module, with the U.S. DALLAS line fieldbus technology to realize low-cost temperature state on-line monitoring program for practical networking modules, can be widely used in real-time temperature monitoring of a variety of data acquisition applications.
SLMT2-1 Series Intelligent temperature data acquisition modules can be digital temperature sensor DS1820 series of products for temperature data collection, display, alarm settings, data transmission, so that the temperature circuit detection system for high reliability, low cost and simple wiring structure. Temperature measurement system as the ideal alternative to traditional products, he has a small size, measuring point and more flexible networking, and so on. With wireless devices or GPRS modules and on-site single-bus transfer (1-wire) technology, can be scattered in different parts of the node module SLMT1 way through wired or wireless link with the monitoring center, to reduce energy consumption, the purpose of promoting safety in production .
This module can be applied: (1) SMT industrial temperature data monitoring (2) Electronic Equipment Factory temperature data monitoring (3) cold storage temperature monitoring (4) Storage Temperature monitoring (5) pharmaceutical GMP monitoring system (6) Environmental temperature monitor (7) Telecommunications room monitoring (8) Power Plant / Power Unit (9) Power Plant / Power Unit (10) Process Temperature Monitoring (11) beer production process temperature detection.
In order to facilitate networking project to use, this module provides secondary development of communication protocols to support secondary development. Users simply according to our protocol can use any serial communication software module queries the data and settings.
Technical parameters and characteristics of
Support sensor DS1820, DS18B20, DS18S20, DS1822
Display temperature range of -25 ℃ ~ +125 ℃
Display Resolution 0.1 ℃
Temperature measurement accuracy 0.5 ℃
Measuring the speed 850ms / Point
Single-bus channels can be accessed by 1-64 points (see ordering and Notes)
Baud rate 19200 (can be customized other baud rate)
Communications Port RS232 (optional CAN, RS485)
Power Supply DC 5V 2A
Power Consumption 2W
Weight 300 grams
Storage Temperature -40 - 85 ℃
Operating environment: -40 - 85 ℃
Support temperature cable length ≤ 200M
Overall dimensions 90 × 66 × 26mm ³
3, the typical program
The most simple applications
SLMT2 module can be directly through the RS232 interface with a computer or laptop connection (optional RS232-USB converter) will provide a live transmission of data directly to a computer for display, analysis and storage.
The following programs are shown, SLMT2 through a single bus interface connected to the fieldbus. DS1B20 chip temperature sensor can also be matching my company SLST series stainless steel package, a variety of protective digital temperature sensor. Modules which can be accessed on the bus 1-646 sensors (from the module model decisions). And each temperature sensor is received by way of parallel bus.
Wireless applications
Wireless applications is the most simple extension of applications. The field wiring, the same as with the most simple applications. Module via RS232 interface with GRPS / CDMA or other wireless devices to connect, you can set up wireless networks. Field data will be sent to the server or data collection center, live data in real time on-line monitoring.
RS485 networking program
SLMT2 channel RS232/RS485 converter module can directly access the current line of RS485 bus. RS232/RS485 converter is an optional extra. Networking Method RS485 bus can be extended to a maximum communication distance 1,200 meters, can effectively solve the most simple problem to connect the distance is too short.
The following diagram SLMT2 Module RS485 networking structure diagram, each module has a node number, a small system that can be placed up to 35 SLMT2 modules. SLMT2 access communication protocol will be free for users to use secondary development.
As SLMT2 module can access up to 64 temperature sensors, a network can have 30 or so SLMT2, you can easily set up with SLMT2 module measuring points over 1500 large-scale sensor networks.
4, interface description
1. RS232 Interface
RS232 interface is a standard serial interface, the pins are defined as follows:
2 foot-RX 3-pin-TX 5-pin-GND
2. Power Interface
The module input power of DC 5V 2A, when used, check the voltage and polarity and then access to the module. Core as a positive.
3. Bus interface (see the test line)
Test line at the time into the new sensor to use, all new sensor information is read into the module can be used for bus use, bus length extension of the actual situation on their own.
Three-core wire bus interface, this interface can be accessed by a maximum of 250 meters the bus, according to different models, the module can be accessed by a maximum of 64 single-bus temperature sensor, wiring as follows:
5, random list of
No. Name Type Quantity Remarks
An intelligent temperature data acquisition module SLMT1-1 1 Kuai
2 single-chip power supply 5V 1A 1 Zhi
3 Serial Line 1
4-bus test line 1
5 Manual 1 copy
6, ordering and Notes
| No. | Channel number (which can be accessed sensor number) |
Model |
Order number |
Price | Drive capability description |
| 1 | Can be accessed by a digital temperature sensor | SLMT2-1/1 |
SLMT2-1/1 | 420 | General line can be accessed by 120 m |
| 2 | Can be accessed by six digital temperature sensor | SLMT2-1/6 | SLMT2-1/6 | 780 | General line can be accessed by 100 meters |
| 3 | Which can be accessed 12 digital temperature sensors | SLMT2-1/12 | SLMT2-1/12 | 980 | General line can be accessed by 100 meters |
| 4 | Which can be accessed 24 digital temperature sensors | SLMT2-1/24 | SLMT2-1/24 | 1080 | General line can be accessed by 80 meters |
| 5 | Which can be accessed 32 digital temperature sensors | SLMT2-1/32 | SLMT2-1/32 | 1880 | General line can be accessed by 60 m |
| 6 | Which can be accessed 64 digital temperature sensors | SLMT2-1/64 | SLMT2-1/64 | 2580 | General line can be accessed by 50 meters |
Special specifications can be customized according to user requirements
For the convenience of the user second development and testing, random testing software distribution. Testing software is not sold separately.
Software basic functions:
1. Real-time display 24-point temperature
2. Can be communication port settings
3. Can be read online a 64-bit serial number of each sensor
4. Write sensor serial number online
5. You can modify the device node number-line (particularly convenient to use a network)
6. A separate command window, user-friendly development, and commands the second test
The main interface at run time
Instrument hardware setup interface
About Software
Hits： Date： 2010-5-9 【Print this Page】 【Close】