A position detector is provided for detecting the relative movement of first and second members which are mounted for relative movement along a measuring path. One of the members comprises a magnetic field generator for generating a magnetic field and the other member comprises first and second conductors which are inductively coupled to said magnetic field generator. The arrangement of the first and second conductors and the magnetic field generator is such that output signals are generated in ...

A low cost x-y digitising system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. The excitation signals applied to the excitation winding are designed to reduce the power drawn fr...

A position detector for counting rotational and/or translatory movements in at least one direction has at least one exciter magnet (2), a single ferromagnetic element (6) and at least one induction coil (7). Relative movements between the exciter magnet and the ferromagnetic element represent the movements to be counted. The energy which is taken from the movement of those two elements during the approach as therebetween and which is accumulated by means of the ferromagnetic element is liberated...

A sheet depositing device for a sheet processing apparatus, includes a feeding section for sequentially feeding sheets or sets of sheets from the sheet processing apparatus, at least one sheet stacking element movable along a guide, for facilitating depositing the sheets or sets of sheets fed by the feeding section, and a sensor arrangement for detecting the position of a sheet stacking element along the guide. The sensor arrangement includes a stationary linear array of active elements and a pa...

A position sensor is provided comprising a coil (1) and an electric conductor (2) or magnetic (3) both arranged so that the size of their overlapping area (p) is varied as the position of an object to be examined changes, a resistor (6), a capacitor (4), a comparator (5) of an inverse output type, and a timing circuit (50a) arranged for uniformly restraining the period (T) of a continuous oscillating motion, herein a displacement of the object to be examined is detected as a change in the time d...

A position sensor which is particularly suitable for the rotational angle detection of throttle or exhaust gas valves comprises a permanent magnet and at least two magnetic field sensors arranged adjacently to the permanent magnet. The magnetic field sensors are, for example, Hall sensors. By a relative movement between the permanent magnet and the magnetic field sensors, a position-dependent signal, for example in dependence on a rotational angle of the shaft, is produced. According to the inve...

A switching element for a rotary or linear encoder which generates pulse signals indicative of rotary or linear position, and direction and rate of change of such position. The invention is characterized by use of a patterned and cured solder-mask material which defines insulated or nonconductive surfaces, with a pattern of conductive wiper-contacting segments therebetween. The invention enables fast and economical fabrication as compared to known encoder switching elements.

A Position Sensor comprises: one or more excitation windings; a signal generator adapted to apply excitation signals to the or each excitation winding; tag means displaceable relative to said excitation windings; one or more sensor windings electromagnetically coupled to said excitation windings such that in response to said excitation signals being applied to said excitation windings, there is generated sensed signal in the or each sensor winding; and a signal processor adapted to process said ...

A low cost x-y digitising system is provided for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined.

The invention relates to a method for estimating the position of a receiver receiving code modulated signals from at least one beacon. The method comprises delimiting a region containing the receiver position based on a code modulated signal received at the receiver from at least one beacon and on available information including at least an initial information on the receiver position. The method further comprises estimating the receiver position as a position within the delimited region which m...