Sensor Subassembly Asynchronous Data Transmission
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Solution Overview
Problem
Existing sensor systems face challenges in transmitting sensor signals and measurement values quickly and without corruption, particularly in applications where precise and high-speed data transmission is required, such as in vehicle engineering for magnetic field measurements.
Innovation Solution
A sensor subassembly with a memory unit for storing sensor data values and a transmission unit that sends data signals at a data rate dependent on an internal clock frequency, triggered by externally received control signals, allowing asynchronous data transmission independent of external clock frequencies, enabling faster and more precise data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor data is transmitted synchronously with external control signals, then signal integrity is maintained, but data transmission speed is limited by external clock frequency
Solution Approach 1:
The patent implements dynamic switching between synchronous and asynchronous transmission modes. The transmission unit can operate in synchronous mode when external clock signals are available for maintained signal integrity, and switch to asynchronous mode using an internal clock generator when higher transmission speed is required, thus dynamically adapting to different operational requirements
Solution Approach 2:
The system changes the clock frequency parameter by introducing an internal clock generator that operates at a higher frequency than the external control signals. This parameter change enables the transmission unit to send data at faster rates while maintaining signal integrity through proper triggering mechanisms based on internal clock cycles
2Productivity
If data transmission rate is increased beyond external control signal frequency, then faster data transfer is achieved, but transmission synchronization is lost
Solution Approach 1:
The internal clock generator acts as an intermediary between the external control signals and the data transmission process. It receives triggering information from external control signals and converts them into high-frequency internal clock cycles, serving as a mediator that enables faster data transfer while maintaining proper synchronization through the triggering mechanism
3Adaptability or versatility
If sensor data is stored in memory before transmission, then transmission timing flexibility is improved, but data latency increases
Solution Approach 1:
The memory unit performs preliminary storage of sensor data values, allowing the transmission unit to retrieve and transmit data at optimal times based on internal clock cycles and triggering information. This preliminary action provides timing flexibility while minimizing latency by ensuring data is ready for immediate transmission when triggered
Data Source
AI summary
A sensor subassembly having a memory unit for storing a sensor data value from the sensor subassembly and a transmission unit for sending a data signal with information about the stored sensor data value to an external receiver at a data rate that is dependent on a clock frequency of a clock signal produced by the sensor subassembly. The transmission unit sends the data signal with the information about the stored sensor data value on the basis of a piece of trigger information in an externally received control signal.