Ranging System Delay Compensation for Accuracy

The patent applies preliminary action by measuring the propagation delay in advance using a delay measurement unit that calculates the delay from the trigger signal output timing to the light emission timing. This measured delay value is stored and subsequently used to correct the ranging measurements, thereby compensating for the instability caused by power supply and temperature variations before they affect the final measurement accuracy

The patent implements feedback by using the measured propagation delay value to correct the ranging calculations. The delay measurement unit continuously monitors the actual delay, and this information is fed back to the ranging calculation process to compensate for timing errors, thereby improving measurement precision while accounting for environmental variations

The patent introduces an intermediary element - the delay measurement unit - that specifically measures the propagation delay between the trigger signal and light emission. This intermediary component isolates and quantifies the internal circuit delay, allowing for separate measurement and correction without fundamentally changing the overall system architecture or operation flow

The patent replaces the assumption of negligible delay with an actual measurement approach. Instead of relying on theoretical or estimated delay values, the system uses electronic measurement to directly capture the actual propagation delay, substituting mechanical or theoretical timing models with precise electronic timing measurement and correction