发明名称 |
Tire pressure sensor system with improved sensitivity and power saving |
摘要 |
A battery powered tire pressure sensor system with a high sensitivity stretch sensor assembly having a variable resistance longitudinal displacement characteristic. The stretch sensor assembly has at least two juxtaposed stretch sensors, each with a first layer bearing the variable resistance element and a second support layer. The sensor assembly is mounted on or in the side wall of a pneumatic tire so that the assembly is displaced by the tire side wall and the resistance is a function of internal tire pressure. The assembly is coupled to a processor which samples the resistance of the stretch sensor assembly periodically. When the processor determines that the pressure is outside a safe range, an r.f. generator is activated by the processor to generate an unsafe tire pressure signal. This signal is converted by a receiver to a warning for the driver. A power saving unit controls application of electrical power to the system as a function of tire speed to prolong battery life.
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申请公布号 |
US7222523(B1) |
申请公布日期 |
2007.05.29 |
申请号 |
US20050267775 |
申请日期 |
2005.11.04 |
申请人 |
SILICON VALLEY MICRO C. CORP. |
发明人 |
HUANG SU SHIONG;ZHU SHENGBO |
分类号 |
G01M17/02 |
主分类号 |
G01M17/02 |
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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