Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Communication network equipment

The Research and Design on Wireless HART Adapter

Author HanJunQing
Tutor FanZuo
School East China University of Science and Technology
Course Control Science and Engineering
Keywords Wireless adapter Low power consumption IEEE 802.15.4 TDMA
CLC TN915.05
Type Master's thesis
Year 2012
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Industrial wireless communication is put forward in recent years, new industrial communications concept , only foreign WirelessHART-based product development and application , and there are no mature products . Existing wired HART instruments to access the wireless network , this paper designed HART wireless adapter used to upgrade traditional HART instrument , wireless communication . HART wireless adapter to take power from the 4-20mA loop power available to very limited , and therefore the power consumption is very sensitive . DC-DC Boost HART wireless adapter in the power section with a large capacitor to store electrical energy , the selection of low-power devices , MCU and wireless communication module using the sleep / wake mechanism the intermittent working to reduce power consumption . Wireless communication protocol using the physical layer and MAC layer of the IEEE 802.15.4 protocol , and the MAC layer design TDMA sub-layer , the time division multiplexing ( i.e. TDMA mechanism) . HART wireless adapter low power consumption of the subject of study , the design of the wireless HART adapter field instrument measurements and status information can be realized through a wireless network to the upper forwarding , the simulation loop current and the acquisition by the wired / wireless digital communication mode and outputs . The preliminary design of this topic HART wireless adapter has a very low power consumption , wireless communication using TDMA mechanism , not only effectively reduce the power consumption , but also to improve the real-time and reliability of wireless communication .

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