Abstract:
A system and method of calibrating a PCB embedded sensor is provided. An object moves in relation to a plurality of predetermined positions. Measurements are acquired from the PCB embedded sensor. The PCB embedded sensor detects whether the object is present at one of the predetermined positions. The acquired measurements are compared to a baseline value relating to the PCB embedded sensor. A change in the acquired measurements is determined. The baseline value is adjusted based on the determined change. The baseline value is adjusted simultaneously while the PCB embedded sensor detects whether the object is present.
Abstract:
A detector (110) for determining a position of at least one object (112) with regard to at least one optical sensor (120) is proposed, wherein the optical sensor (120) has an image plane (122). The detector (110) comprises: at least one illumination source (134), wherein the illumination source (134) emits at least one light beam (136), wherein the light beam (136) comprises a component which is parallel to the image plane (122) of the optical sensor (120); the optical sensor (120), wherein the optical sensor (120) has a sensor region (126) in the image plane (122), wherein the optical sensor (120) is adapted to determine a transversal component of the position of the object (112) in an event where the object (112) approaches the optical sensor (120) in a manner that light is scattered from the component of the light beam (136) conducted parallel to the image plane (122) of the optical sensor (120), the transversal component of the position being a position in the image plane (122) of the optical sensor (120), the optical sensor (120) being adapted to generate at least one transversal sensor signal from the light scattered from the component of the light beam (136) conducted parallel to the image plane (122) of the optical sensor (120) in the sensor region (126), wherein the optical sensor (120) is further designed to generate at least one longitudinal sensor signal in a manner dependent on an illumination of the sensor region (126) by light which is scattered from the component of the light beam (136) conducted parallel to the image plane (122) of the optical sensor (120), wherein the longitudinal sensor signal is dependent on a variation of an intensity of the light is scattered from the component of the light beam (136) conducted parallel to the image plane (122) of the optical sensor (120) in the sensor region (126); and an evaluation device (132), wherein the evaluation device (132) is designed to generate at least one item of information on a transversal component of a position of the object (112) by evaluating the transversal sensor signal and wherein the evaluation device (132) is further designed to generate at least one item of information on a longitudinal component of a position of the object (112) by evaluating the longitudinal sensor signal.
Abstract:
Technologies for remotely controlling a separate computing device includes a wearable computing device to receive sensor data from an optical sensor of the wearable computing device. The sensor data comprises data is indicative of a skin surface of a forearm of a user of the wearable computing device. The wearable computing device generates control data based on the received sensor data. The generated control data is transmitted to the separate computing device. In some embodiments, an x-coordinate is generated based on detection of longitudinal movement of the wearable computing device relative to the skin surface of the forearm of the user and a y-coordinate is generated based on detection of rotational movement of the wearable computing device relative to the skin surface of the forearm of the user.
Abstract:
In a machine tool (1) comprising a rotating spindle (2) and a vision system (7) for acquiring images of a tool (3) mounted on the spindle, for each value (VC) of an interval (ICN) of preselected rotational speed values centred on a nominal rotational speed value (VN) of the spindle, an image acquisition period (TA) is determined, that is a multiple of the rotational period (TR) of the spindle calculated for that preselected speed value and compatible with the vision system, and, while the spindle is rotating at the nominal rotational speed, a representative couple of tool images that are temporally spaced apart from one another of the image acquisition period is obtained, in order to obtain an estimated speed value (VS), associated to the nominal speed value, by selecting that preselected speed value to which the representative couple of images that are the most similar to each other on the basis of a similarity rule corresponds.
Abstract:
The invention refers to an arrangement and a method for determining a longitudinal position of a stopper (4) for sealing a compartment (5) of a translucent medicament container (1) for a liquid medicament (M). The arrangement comprises a circular light source (8) and a photo sensitive sensor (7), wherein either the light source (8) or the sensor (7) is laterally arrangeable next to the medicament container (1) extending over at least part of the length of the medicament container (1), and wherein the respective other of the light source (8) and the sensor (7) is arrangeable in a circular manner around a head of the medicament container (1). The light source is arranged to emit light into the medicament container. The light is scattered by the medicament or medicament container (1) and detected by the sensor (7). The sensor (7) is connected to a processor unit for detecting the position of the stopper (4).
Abstract:
An angular position sensor, especially for use in a galvanometric scanning system, and including a sectorized photodetector with an illumination shielding plate attached to a shaft whose rotation is to be sensed. The photodetector has two opposed sectors, preferably disposed diametrically opposite each other, such that incident illumination from a source is differentially modulated by rotation of the shielding plate. In addition, at least a third sector is provided which is always illuminated by the source regardless of the rotational position of the shielding plate. The output from the diametrically opposed sectors is used to determine the rotational angle of the shaft, while the output from the third sector is used to stabilize the illumination source, such that the output of the two opposed sectors of the detector is insensitive to changes in temperature.
Abstract:
The invention concerns a device with a signal-originator and a signal-receiver unit (10, 11) and a signal-processing unit (17) for the detection of different steering angles. The device produces switching signals, for the actuation of differential locks for instance. In order to be able to identify discrete steering angles, the signal-originator unit (10) operates in conjunction with two sensors (12, 13). The preferred field of application of the steering-angle sensor system proposed is in prime movers and construction plant.
Abstract:
A laser aligment sensor system for use on surface mount component placement machines. The system consists of a laser passing through a collimating lens, then through an aperture creating a stripe of collimated light which is focused past the component being aligned to strike a CCD sensor array. During transit of the component between the bin of components and the circuit board, the component is rotated; the shadow which falls on the sensor array is monitored. When the minimum width of shadow is detected, the correct angular orientation is determined, the average of the edges of the shadow compared with the center of the quill determines the coordinate location of the component on the quill. Two aligments normally occur displaced by 90 DEG . The sensor sends correcting signals to the placement machine to assure correct angular orientation and X, Y position for the component to be placed on the circuit board.
Abstract:
A device for measuring displacement of ceramic materials while they are hot, wherein a laser emitting unit of a laser displacement measuring instrument is disposed on one side of a core tube that is arranged to penetrate through a sample heating furnace, a laser receiving unit is disposed on the opposing side, slit metals for blocking intra-furnace radiant heat and light are provided on the inside of the measuring windows provided at both ends of the core tube, heat insulating materials with slits for blocking intra-furnace radiant heat and light are arranged on the inside thereof, slit plates for blocking intra-furnace radiant light and optical filters for decreasing intra-furnace radiant light are arranged at the end surfaces of the laser emitting unit and the laser receiving unit, in order to eliminate measuring error caused by the light and heat in the furnace, and making it possible to take measurement maintaining a resolution of smaller than 0.5 νm (the interior of the core tube of the sample heating furnace can, as required, be substituted by various kinds of atmospheres, and displacement of small samples such as ceramics can be measured).