Load sensor, temperature compensation method for the load sensor and manufacturing method of the load sensor

A temperature compensating method for a load sensor using a material which ohmic resistance changes according to load acting thereon, comprising:

• arranging a load detecting element and a temperature compensation element closely, which the load detecting element and the temperature detecting element are made of the same material, made as the same dimension or similar figure, and comprise conductive part respectively;
• connecting the conductive parts of the load detecting element and the temperature compensating element to a power source electrically in parallel each other,
• making the load act on the load detecting element;
• and
• detecting difference between voltages which act on the conductive parts of the load detecting element and the temperature compensating element as an equivalent of compensated load.

A manufacturing method for a load sensor using a material which ohmic resistance changes according to load acting thereon, comprising:

• producing an element which comprises the material as a conductive part;
• cutting the element into the same dimensional pieces;
• arranging a couple of the pieces of the element closely, wherein one piece of the element functions as a load detecting element which the load acts thereon and another piece of the element functions as a temperature compensating element;
• and
• connecting the conductive parts of the load detecting element and the temperature compensating element to a power source electrically in parallel each other.

A manufacturing method for a load sensor using a material which ohmic resistance changes according to load acting thereon, comprising:

• producing an element which comprises the material as conductive part;
• forming a groove in the center of the element so that the conductive part is divided into a couple of the same dimensional parts, wherein one part of the element functions as a load detecting element which the load acts thereon and another part of the element functions as a temperature compensating element;
• and
• connecting the divided conductive parts of the load detecting element and the temperature compensating element to a power source electrically in parallel each other.