摘要 |
<p>Multi functional sensors are described. A silicon based sensor utilizes metal layers arranged as resistors around a central pair if resistors separated by a humidity sensitive polymer with one of the central resistors being a heater. This enables temperature humidity wind speed and direction to be measured. In another embodiment an array of resistors is printed onto a flexible substrate to form the basis of an array of sensors. A soil moisture sensor, which is also useful as a leaf wetness sensor, incorporates a novel self calibrating capacitive sensor structure. The flexible substrate is rolled into a stake that can be inserted in the soil so that below ground sensors measure soil moisture and above ground sensors measure temperature, light, humidity, wind speed and direction.</p> |
申请人 |
M.B.T.L. LIMITED;TANNER, PHILIP;JOHNSON, PETER;THIEL, DAVID;SUZUKI, TAKEHARU;ADAMEC, RICHARD;BEADLE, HENRY, WILLIAM, PETER |
发明人 |
TANNER, PHILIP;JOHNSON, PETER;THIEL, DAVID;SUZUKI, TAKEHARU;ADAMEC, RICHARD;BEADLE, HENRY, WILLIAM, PETER |