US Patent Application 18249582. VEHICLE SPEED CALCULATION DEVICE AND VEHICLE SPEED CALCULATION METHOD simplified abstract
Contents
VEHICLE SPEED CALCULATION DEVICE AND VEHICLE SPEED CALCULATION METHOD
Organization Name
Inventor(s)
VEHICLE SPEED CALCULATION DEVICE AND VEHICLE SPEED CALCULATION METHOD - A simplified explanation of the abstract
This abstract first appeared for US patent application 18249582 titled 'VEHICLE SPEED CALCULATION DEVICE AND VEHICLE SPEED CALCULATION METHOD
Simplified Explanation
The patent application describes a device for calculating the speed of a railway vehicle, aiming to improve reliability and reduce costs.
- The device includes multiple shaft speed sensors and a non-contact speed sensor.
- A sensor receiving unit collects detection values from the sensors.
- An estimated speed calculation unit uses the vehicle's speed and acceleration to calculate the estimated speed.
- A speed determination unit determines the vehicle's speed based on the detection values and the estimated speed.
- The speed determination unit selects the appropriate speed based on the wheel's condition and the detection values.
Original Abstract Submitted
In order to achieve improvement in reliability of a speed calculation device included in a railway vehicle while reducing cost increase due to redundancy of a device, a vehicle speed calculation device includes at least two shaft speed sensors, a non-contact speed sensor, a sensor receiving unit that receives at least two first detection values detected by the shaft speed sensor and a second detection value detected by the non-contact speed sensor, an estimated speed calculation unit that calculates an estimated speed at present time of the railway vehicle from a latest vehicle speed and acceleration of the railway vehicle, and a speed determination unit that determines a vehicle speed based on at least two of the first detection values, the second detection value, and the estimated speed. The speed determination unit determines the vehicle speed by selecting a required speed from at least two first speeds calculated from at least two of the first detection values, a second speed calculated from the second detection value, and the estimated speed based on an adhesive or non-adhesive state of a wheel including the shaft speed sensor.
