发明名称 |
Temperature-sensing system for cattle |
摘要 |
Disclosed is a device for detecting temperatures which differ from a variable norm of particular use in detecting elevated temperatures in cattle. The device, one being attached to each animal, includes a square wave generator, an identification number encoder for outputting the identification number of the particular animal in the herd, a fever detector with an ambient temperature compensating circuit which provides output only when internal temperature of the animal is above a preset value for a given ambient temperature, and a transmitter which sends the identification code to a receiver. In certain embodiments, no separate fever detector is provided; rather the square wave generator outputs a frequency-modulated signal related to the internal body temperature. Of particular interest is the identification number encoder which intermittently outputs a preset hardwired identification code to the transmitter at periodic intervals for transmission to a receiver either at constant intervals or when temperatures sensed by a temperature detector exceed the variable norm by a preset given amount.
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申请公布号 |
US4865044(A) |
申请公布日期 |
1989.09.12 |
申请号 |
US19870023402 |
申请日期 |
1987.03.09 |
申请人 |
WALLACE, THOMAS L.;WALLACE, SHERYL A. |
发明人 |
WALLACE, THOMAS L.;WALLACE, SHERYL A. |
分类号 |
A61B5/00;A61B5/01;G01K1/02;G01K3/14 |
主分类号 |
A61B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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