Measurement of pressure of a fluid in a vessel using a cantilever spring in the vessel; a magnet connected to the cantilever spring in the vessel; an electromagnet outside of the vessel operatively connected to the magnet and the cantilever spring in the vessel, wherein the electromagnet induces movement of the magnet and the cantilever spring in the vessel, and wherein the movement is related to the pressure of the fluid in the vessel; a receiving coil operatively positioned relative to the magnet, wherein movement of the cantilever spring and the magnet in the vessel creates an electromotive response in the coil; and a controller analyzer connected to the receiving coil, wherein the controller analyzer uses the electromotive response in the coil for measuring the pressure of the fluid in the vessel.

A pressure sensor that includes a housing with an upper housing part and a lower housing part, the upper housing part and the lower housing part being configured such that a chamber is formed between them. A diaphragm is provided between the upper housing part and the lower housing part, and dividing the chamber into an upper chamber and a lower chamber. A magnetic core is linked to the diaphragm. An operating spring includes a top end and a bottom end, the top end being supported against the upper housing part and the bottom end being supported against the magnetic core. At least one of the top end and the bottom end of the operating spring is provided with an adhesive layer. The pressure sensor enables the operating spring and the magnetic core to move integrally with each other, thereby improving the precision of the pressure sensor.

A miniature wireless pressure sensor has an inductor and a capacitor. The inductor and the capacitor form a L-C resonator with a resonate frequency. The inductor's inductance is affected by a slidable electro-magnetic element. When an outside pressure is applied onto the element, it causes the element to move and such movement changes the inductance of the inductor. Because of that, the resonate frequency is changed. Therefore, the change in resonate frequency indicates a change in the outside pressure. The L-C resonator is calibrated to correlate with the outside pressure. Such a miniature wireless pressure sensor facilitates the monitoring of physiological pressure in different part of human body such as eyes and cranium.

Disclosed is a vehicle control unit (10) comprising an electronic circuit, a circuit board (15), a housing (12) and at least one pressure sensor as a vehicle sensor (11), wherein the at least one vehicle sensor (11) is electrically connected to the electronic circuit for receiving measurement values. The vehicle sensor (11) is connected to the circuit board (15) via at least one press-fit contact (22). A vehicle comprising the vehicle control unit (10) is also disclosed.

An articulated-arm robot and a method for machining a workpiece by means of the articulated-arm robot includes a base; a working head holder; several lever arms, which are arranged between the base and the working head holder, the lever arms being coupled to one another by means of revolute joints; a working head which is arranged on the working head holder, the working head comprising a working spindle which is arranged in a spindle housing and is mounted in the spindle housing at least at a first bearing point and a second bearing point. At least one sensor for sensing a radial force is formed at each of the first bearing point and the second bearing point. At least one sensor for sensing an axial force is formed at least one of the two bearing points.

An articulated-arm robot and a method for machining a workpiece by means of the articulated-arm robot includes a base; a working head holder; several lever arms, which are arranged between the base and the working head holder, the lever arms being coupled to one another by means of revolute joints; a working head which is arranged on the working head holder, the working head comprising a working spindle which is arranged in a spindle housing and is mounted in the spindle housing at least at a first bearing point and a second bearing point. At least one sensor for sensing a radial force is formed at each of the first bearing point and the second bearing point. At least one sensor for sensing an axial force is formed at least one of the two bearing points.

A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.

A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.

A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.

A method and apparatus for determining a property of a fluid in a vessel. The method uses magnetic tracer particles and an externally applied magnetic field which orients the particles. When the fluid moves, it changes the orientation of the tracer particles, thus changing the magnetic fields. These changes are detected by external magnetic field sensors. By using mathematical models, the property of the fluid in the vessel is determined from the detected magnetic field. In this manner, fluid vorticity, velocity, strain and stress may be estimated.