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The transmission distance and transmission method are different, ** are different. You can go to Xiamen Jixun to consult.
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dtu-data transfer unit. In general, there are many kinds of DTUs, such as GPRS DTU, which is DTU with GPRS as the core technology; Another example is LoRa DTU, which is a DTU with LoRa as the core technology; Another example is nb-lot dtu; Many, much, much. This core technology should also be understood as a protocol.
Zigbee is a short-range wireless communication technology, and there is probably a DTU of Zigbee, but I haven't seen it.
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Zigbee is a wireless communication technology, similar to LoRa, NB-IoT, etc., if you haven't heard of this, 4G everyone must know very well, 4G is also a wireless communication technology, so it should be clear.
DTU, on the other hand, is a data transmission device. In IoT scenarios, DTUs are required to transmit data collected by front-end sensors, such as the opening and closing status of a door, to the background. So how do you transfer it?
It definitely needs to be transmitted through wireless communication methods such as Zigbee and 4G.
This is the relationship between Zigbee and DTU, or the difference, it is a two-dimensional thing.
At present, there are DTUs on the market that use Zigbee communication, 4G communication, and LoRa. When you understand and procure, it is best to comprehensively evaluate the establishment time of the enterprise, the research and development time of the product, the actual landing project, and the application plan, otherwise you will encounter unnecessary trouble.
Shunzhou Intelligent began to do DTU products in 2004, and now has accumulated a very rich and mature product line, recently for the problem of 2G 3G network withdrawal, but also launched DTU, cost-effective, project landing and program are also very mature, can be said to be a veteran of the industry, if you need to understand the information of DTU and RTU, you can learn about it yourself.
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The power supply mode of Zigbee and GPRS mainly depends on the design of the product itself, and there must be a specific model to confirm which power supply method, and if the battery is powered by electricity, it mainly depends on the power consumption to feel whether the battery is appropriate. Batteries are generally not used.
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First, a--a, b--b, g--g wiring to see right?
Clause. 2. Is there a 232 to 485 converter in the middle?
Clause. 3. Yes, 232 to 485 is for power supply, and neither your DTU nor Zigbee is qualified to provide power supply! Switch to a 232-to-485 converter that can be powered separately.
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It's best to test the time separately and confirm that the two modules are okay before connecting them for testing.
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Both Zigbee and GPRS DTU can support transparent transmission, and the original data will be received by the computer.
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