Slipping detector system for vehicles

A slipping detection system for a vehicle having wheels driven by motors, comprising

• a plurality of means for detecting at least one electric value changing in relation to the rotational speed of a plurality of said wheels, a respective one of said means being provided for each of said wheels;
• means for receiving a plurality of outputs of said electric value detector means alternately in a time division manner;
• memory means for storing the electric value for said wheels until a new electric value is received for the same wheel;
• means for comparing the newly-received electric value with the already-received corresponding electric value and non-corresponding electric value stored in said memory means;
• and
• means for judging a slipping of the associated wheel when at least one of the differences between said newly-received electric value and said already-received corresponding electric value and said already-received non-corresponding electric value exceeds a predetermined value.

A slipping detection system for a vehicle having a plurality of driven wheels comprising

• a plurality of detecting means for detecting an electric value changing in relation to the rotational speed of a respective one of said driven wheels provided in said vehicle;
• receiving means for sequentially receiving the outputs from said detecting means in a time division manner;
• memory means for storing the received electric value for the respective wheels until a new value corresponding to said respective wheels is received;
• comparing means for comparing the stored previously-received value for each wheel with said new value for each wheel;
• and
• judging means for detecting a slipping of a wheel when the difference produced by said comparing means for that wheel exceeds a predetermined value.