Common Trigger Signal for Simultaneous Sensor Acquisition
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Solution Overview
Problem
In communication systems, ensuring the simultaneity of sensor values across multiple communication channels is challenging, leading to potential incorrect calculations and erroneous abnormality detection due to timing shifts in trigger signal generation between microcomputers, which also increases the complexity and number of signal output terminals and wiring steps.
Innovation Solution
A communication system design where a common transmission trigger signal is generated to simultaneously put multiple communication channels in a transmittable state, allowing signal acquisition units to acquire sensor values simultaneously, reducing the need for individual trigger signals and simplifying the configuration by using a single transmission trigger signal for each reception unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual trigger signals are generated for each communication channel to ensure simultaneous acquisition of sensor values, then measurement precision is improved, but device complexity increases due to multiple signal output terminals and wiring steps
Solution Approach 1:
The patent combines multiple individual trigger signals into a single common trigger signal that is distributed to multiple communication channels. This common trigger signal simultaneously activates all sensor devices, ensuring simultaneous acquisition of sensor values while reducing the number of trigger signal output terminals and wiring steps from multiple individual connections to a single shared connection.
2Device complexity
If a common transmission trigger signal is used to simplify the system configuration, then device complexity is reduced, but ensuring simultaneity of sensor values becomes challenging
Solution Approach 1:
The patent segments the common trigger signal into multiple identical copies, each distributed to respective communication channels. This segmentation ensures that each sensor device receives its own trigger signal instance from the common source, maintaining simultaneity across all channels while preserving the simplicity of the unified trigger generation architecture.
3Measurement precision
If trigger signal transmission timing is monitored and adjusted between microcomputers, then simultaneity of sensor values is maintained, but productivity decreases due to additional monitoring and adjustment operations
Solution Approach 1:
The patent implements preliminary synchronization by generating a common trigger signal that inherently coordinates the transmission timing across all communication channels before data acquisition begins. This preliminary action eliminates the need for subsequent monitoring and adjustment operations, as all sensors are simultaneously activated by the pre-coordinated common trigger signal, thereby maintaining measurement precision while improving productivity.
Data Source
AI summary
A reception unit of a microcomputer includes a plurality of signal acquisition units and one transmission trigger signal generation unit. Each of the signal acquisition units is connected to a respective sensor element of a sensor device corresponding thereto via a corresponding communication channel, and, when the communication channels are in a transmittable state, sensor values transmitted via the communication channels are acquired. One transmission trigger signal generation unit generates a transmission trigger signal for simultaneously putting the plural communication channels in the transmittable state. The plurality of signal acquisition units in the reception unit simultaneously acquire the plurality of sensor values using a common transmission trigger signal.