Digital duplex remote networking wired interphone
A digital, walkie-talkie technology, applied in the direction of electrical components, transmission systems, etc., can solve problems such as limited operating space and complex electromagnetic environment, and achieve the effect of ensuring uniqueness and stability of work
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[0022] refer to Figure 1-Figure 4 , the specific embodiment adopts the following technical scheme: it comprises main equipment 11, CAN bus hub controller 22 and slave equipment 33, main equipment 11 is connected with CAN bus hub controller 22, and slave equipment 33 is distributed in each test wellhead The intelligent node is connected, and the intelligent node is connected with the CAN bus hub controller 22 through the CAN bus communication interface and cables.
[0023] The main equipment 11 is installed in the well logging vehicle body, and the slave equipment 33 is installed near the wellhead of each operation. The main equipment 11 and the slave equipment 33 are connected by a multi-core shielded cable. There are two positive and negative power lines in this cable. The shielded wire is used as CAN2.0 ground wire.
[0024] The master device 11 is one, and the slave device 33 may be one or multiple cascaded to work together.
[0025] The CAN bus communication interface a...
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