Industrial Wireless Pulse Communication for Low-Interference Links
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Solution Overview
Problem
Wireless communication systems in industrial settings face issues such as high power consumption, interference, and multi-path fading due to continuous electromagnetic field emission, which complicates communication between movable probes and base stations, especially in environments with metal objects and moving personnel.
Innovation Solution
A wireless digital communication method using energy-efficient radio pulses with short durations and longer silence intervals, eliminating the need for a modulated carrier, and employing encoding and decoding devices with radio transceivers to transmit digital signals, allowing for self-recognition and authentication between probes and base stations without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a modulated carrier signal is used for wireless communication, then information transmission is achieved, but power consumption increases and electromagnetic field emission becomes continuous
Solution Approach 1:
The patent applies periodic action by using pulsed radio frequency signals instead of continuous carrier waves. The communication system transmits information through periodic pulses with specific timing patterns, where data is encoded in the presence or absence of pulses during defined time slots. This periodic transmission approach maintains communication reliability while significantly reducing power consumption compared to continuous carrier modulation.
2Loss of information
If continuous carrier signal is transmitted for wireless communication, then information can be transmitted, but interference between multiple systems increases
Solution Approach 1:
The patent applies dynamics by implementing dynamic time-division multiplexing where each communication system operates in dynamically assigned time slots rather than continuously. The system dynamically allocates transmission opportunities based on detected activity, allowing multiple systems to coexist in the same frequency band without continuous interference. This dynamic approach enables information transmission while minimizing harmful interference between coexisting wireless systems.
3Reliability
If modulated carrier signal is used, then communication between probe and base station is established, but multi-path fading causes destructive interference areas
Solution Approach 1:
The patent applies this principle by using short-duration radio pulses instead of continuous carriers. Each pulse is a brief, discrete transmission that completes its information carrying function quickly. These short-lived pulses reduce the time window for multi-path reflections to create destructive interference patterns, thereby mitigating fading effects while maintaining communication reliability through repeated pulsing sequences.
4Reliability
If wireless communication system is implemented in industrial environment, then communication is achieved, but authentication between devices requires operator intervention
Solution Approach 1:
The patent applies self-service by implementing automatic authentication mechanisms where the probe and base station perform mutual recognition and validation without operator intervention. The system uses pre-configured identification codes and cryptographic protocols that allow devices to autonomously verify each other's authenticity upon establishment of the wireless link, eliminating the need for manual authentication operations while maintaining security and reliability.
Data Source
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AI summary
Wireless digital communication method for the communication between two electronic devices (3, 16) of an industrial apparatus (1), including - encoding each bit of information by a respective sequence of a certain number (N) of pulses (25) that alternate with a corresponding number (N-1) of silence intervals (26), each pulse having a pulse duration (TI) shorter than or equal to ns and said silence intervals having respective silence durations (TSj) longer than or equal to 30 ns - transmitting, by a first electronic device, a radio signal (RS) comprising a plurality of radio pulses corresponding to the sequence of pulses without modulating any radio carrier, and - receiving and decoding, by the other electronic device, said radio signal to obtain said bit of information. The method may include additional steps for exchanging information between the electronic devices according to which one of the electronic devices, while in a stand-by state, transmits a request message, waits for a reply message from the other electronic device (if and when some conditions are complied with) and, upon receiving the reply message, switches to an operating state in which the two electronic devices are communicatively coupled to each other.