Apparatus and associated methods relate to sensing a physical parameter and verifying correct operation of a system used to sense the physical parameter. A sensing device includes four resistive elements configured in a Wheatstone bridge configuration is configured to sense the physical parameter. A biasing network selectively provides first and second biasing conditions to the sensing device. First and second output electrical signals are generated by the sensing device in response to the first and second biasing conditions, respectively, selectively provided to the sensing device. The first and second output electrical signals are each indicative of the parameter value of the physical parameter, but not necessarily equal to one another. A verification module verifies correct operation of the system based on a consistency determination of first and second output electrical signals.

An electrical circuit includes an SG full bridge circuit, a first resistor series connection connected between the terminals of an energy supply gate of the SG full bridge circuit and having a first tap between two resistors, and a second resistor series connection connected between the terminals of a signal gate of the SG full bridge circuit and having a second tap between two resistors.

An information output device that can output the position of a load applied to the pedal is provided. A strain gauge is provided on the inner face of a crank of a bicycle and detects strain occurring in the crank. A cycle computer display unit displays an image showing the center position of the load applied to the pedal connected to the crank based on the tangential force and the torsional torque calculated based on the output values of the first strain gauge to the sixth strain gauge.

The present invention reduces the time required by measuring a sensor object more than before. An input unit (10) includes an acquisition portion (11) that acquires a time sequence signal, a filter portion (12) that filters the time sequence signal according to a frequency, a forwarding portion (13) that forwards a filtered signal by frequency to a control device (90) and a filter switching portion (14). The filter switching portion (14) switches whether the filter portion (12) filters the time sequence signal according to a frequency in the process of acquiring the time sequence signal by the acquisition portion (11).

By combining at least two strain sensors in a symmetric configuration, a dual use sensor may be realized. This may reduce the footprint, cost, and complexity of employing two different sensors. It may also improve the accuracy of the measurements as two different parameters i.e., strain and environmental information are measured at the same physical location. This dual use sensor may be deployed in an array over a large area or space, providing systemic information of the subject that is previously difficult to detect.

The present disclosure is directed to an electronic circuit having a Hall effect element and a resistor bridge, all disposed over a common semiconductor substrate. The resistor bridge includes a first set of resistive elements having a first vertical epitaxial resistor and a first lateral epitaxial resistor coupled in series, and a second set of resistive elements having a second vertical epitaxial resistor and a second lateral epitaxial resistor coupled in series. The first set of resistive elements and the second set of resistive elements can be coupled in parallel. The resistor bridge can be configured to sense a stress value of the Hall effect element.

A force sensor includes a first structure, four strain generation parts, and a second structure. The first structure is formed in such a way that a third axis penetrates therethrough. The four strain generation parts are provided along first and second axes on a reference plane formed by the first and second axes. The second structure is connected to the first structure with the strain generation parts interposed therebetween. The strain generation parts each includes a first beam part extending along the first axis or the second axis, and a second beam part extending in a direction orthogonal to the first beam part and connected to the first beam part at an intermediate part. The strain generation parts are formed in such a way that they are line-symmetric with respect to both the first axis and the second axis when projected in a direction of the third axis.

A force sensor includes a first structure, four strain generation parts, and a second structure connected to the first structure with the strain generation parts interposed therebetween. The strain generation part includes a first connection part connected to the first structure, a first branch part, which is a beam-like part branching into two from the first connection part toward the second structure and extending in directions separating from each other, a second branch part, which is a beam-like part connected to the first branch part with bent parts interposed therebetween and extending in directions approaching each other, and a second connection part where branched parts of the second branch part join and connects to the second structure. The strain generation parts are formed so that the strain generation parts become line-symmetric with respect to the first and second axes when projected in a direction perpendicular to the reference plane.

A sensor circuit architecture includes a Wheatstone bridge-type sensing element that includes a plurality of resistors and a plurality of equivalent compensation networks. Each of the plurality of resistors includes one of the plurality of equivalent compensation networks. Each of the plurality of equivalent compensation networks includes at least one digital resistive compensation network configured to provide at least one of the following: variable resistance, digitally controlled variable resistance, digitally controlled resistance, and/or digitally set resistance. The sensor circuit architecture is configured with the at least one digital resistive compensation network to implement at least one of the following: a desired scale of output, a desired offset compensation, and/or a desired temperature compensation.

Systems and methods for wireless telemetry in oil and gas wells use fluid pressure differentials to send signals from surface equipment to a downhole tool. More specifically, the methods and systems selectively apply fluid pressure to a tubing string and measure the resulting mechanical strain, or deformation, on a tubular of the downhole tool. The deformation may be an elastic deformation or it may be a plastic deformation with yielding of the tubular. One or more of such strains or deformations may be used to encode a digital signal that can command an action on the tool. In some embodiments, the strain or deformation may be measured by a low-cost strain gauge.