Communication control method of physical network terminal
A technology of communication control and physical network, applied in the field of communication control of physical network terminals, can solve problems such as rising development costs, increased procurement costs, non-professionals cannot modify hardware circuits, etc., to reduce power consumption, fast reconfiguration, The effect of reducing manufacturing costs
Active Publication Date: 2020-11-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
Faced with the increasing demand for IoT applications, manufacturers need to make different specific designs according to different application requirements, which leads to a further increase in development costs
Moreover, due to the fixed hardware characteristics of the equipment put into production and on the market, non-professionals cannot modify the hardware circuit, and cannot change the sensor model and type. Users must purchase different terminal equipment according to different needs, which leads to further procurement costs in the actual deployment of IoT applications. increase
[0003] If the processor of the IoT terminal can be removed, there is no need to deploy the processor
Method used
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[0027] Common digital buses include at least two signal lines of data and clock, such as I2C bus, etc. In addition, some buses use more than two signal lines, including two signal lines of data and clock, such as SPI bus, etc., the present invention The above is aimed at a bus with at least three signal lines, therefore, this embodiment uses the SPI bus as an example for illustration.
[0028] According to the usage scenario, the state of the state machine can include monitoring, uplink communication, downlink communication, chip selection and enable, etc., and, in order to realize the state transition without setting firmware in the IoT terminal, the state transition of the state can pass through the logic gate circuit Or FPGA or ASIC or software implementation.
[0029] The state transition diagram of the state machine used for node and sensor control is shown in figure 2 , where the state machine is in the monitoring state after starting to work, and jumps to other states...
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The invention discloses a communication control method of a physical network terminal, and belongs to the field of communication control of Internet of Things terminals. The method comprises the following steps: inserting a control instruction into a pulse width coded signal transmitted to a sensor node by a gateway, and converting the pulse width coded signal inserted with the control instructioninto bus data and a clock signal after being received by the sensor node; and enabling the node to use a state machine to receive the bus data and the clock signal generated by conversion, identifying and extracting the control instruction from the bus data and the clock signal, and completing the communication control action of the corresponding physical network terminal according to the contentof the control instruction, and the communication control action comprising chip selection, enabling, uplink and downlink communication control and switching between sensor chips. According to the scheme, the gateway can control the sensor node to complete different work tasks by sending the control instruction to the state machine.
Description
technical field [0001] The invention relates to the field of communication control of physical network terminals, in particular to a communication control method of physical network terminals. Background technique [0002] In the process of R&D, design and production of traditional Internet of Things terminal equipment, it is first necessary to select sensors and processors based on device functions, usage scenarios, cost and other factors, then design hardware circuits, and write corresponding control programs (in run on a terminal processor). Facing the ever-increasing demand for IoT applications, manufacturers need to make different specific designs according to different application requirements, which leads to a further increase in development costs. Moreover, due to the fixed hardware characteristics of the equipment put into production and on the market, non-professionals cannot modify the hardware circuit, and cannot change the sensor model and type. Users must purc...
Claims
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Login to View More IPC IPC(8): H04L29/08H04W84/18
CPCH04L67/125H04W84/18
Inventor 鲁力李松璠张翀宋一杭
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA