Power sensor module for engine transmission and driveline applications
First Claim
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1. A power sensor module, adapted for use with a rotating shaft, comprising:
- a housing and a torque sensor within the housing and mounted on the rotating element wherein the torque sensor produces a torque sensor signal based on the amount of torque applied to the rotating element;
a rotating circuit inside the housing and connected to the rotating element such that the rotating circuit obtains the torque sensor signal and produces a transmitted torque signal;
a stationary circuit that receives the transmitted torque signal and produces a torque signal;
a target inside the housing and mounted on the rotating element; and
a speed sensor inside the housing such that the speed sensor detects the target and produces a speed signal.
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Abstract
A power sensor module suitable for automotive and other high volume applications is disclosed. The power sensor module combines a speed sensing and torque sensing operation into a single unit. A power measurement can be derived from torque and speed. Combining torque sensing and power sensing within a single module instead of using separate modules for each allows for reducing redundancies and lowering cost.
33 Citations
21 Claims
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1. A power sensor module, adapted for use with a rotating shaft, comprising:
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a housing and a torque sensor within the housing and mounted on the rotating element wherein the torque sensor produces a torque sensor signal based on the amount of torque applied to the rotating element; a rotating circuit inside the housing and connected to the rotating element such that the rotating circuit obtains the torque sensor signal and produces a transmitted torque signal; a stationary circuit that receives the transmitted torque signal and produces a torque signal; a target inside the housing and mounted on the rotating element; and a speed sensor inside the housing such that the speed sensor detects the target and produces a speed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power sensor module adapted for use with a rotating element incorporating:
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a housing; a torque sensor inside the housing and mounted on the rotating element wherein the torque sensor produces a torque sensor signal based on the amount of torque applied to the rotating element; a rotating circuit inside the housing and connected to the rotating element such that the rotating circuit obtains the torque sensor signal and produces a transmitted torque signal; a stationary circuit that receives the transmitted torque signal and produces a torque signal; a target inside the housing and mounted on the same substrate as the rotating circuit; and a speed sensor inside the housing such that the speed sensor detects the target and produces a speed signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of producing a speed signal indicating the speed of a rotating element while also producing a torque signal indicating the torque placed on the rotating element, said method comprising the steps of:
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protecting a torque sensor, rotating circuit, target, and speed sensor as well as other components by enclosing them within a housing; using the torque sensor mounted on the rotating element to produce a torque sensor signal indicating the torque placed on the rotating element; converting the torque sensor signal into a transmitted torque signal; producing a torque signal from the transmitted torque signal; and using the target connected to the rotating element and a speed sensor to produce a speed signal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification