Large Area Temperature Sensor

摘要

A sensing device is made up of a network of nominally identical temperature dependent resistors which is topologically equivalent to a square resistor network. The device has terminals at which an average resistance value thereof can be measured. The resistors are supported on a substrate which can be reduced in size from an initial size without substantially changing the average resistance value. In preferred embodiments, a pattern of contacts and conductive tracks joining the contacts are printed on a substrate, and a material having a temperature dependent resistance is applied over the contacts to define a network of interconnected thermistors. Alternatively, the material can be applied to the substrate first and the contacts and tracks printed on it.

主权项

1. A sensing device including a plurality of temperature dependent resistors connected in series and parallel with each other to form a network which is topologically equivalent to a square resistor network, the sensing device having terminals at which an average resistance value thereof can be measured, the plurality of resistors being supported on a substrate which can be reduced in size from an initial size without substantially changing the average resistance value.