Abstract:
Device for detection of relative motions or positions of one or more parts of the body, comprising at least two measuring sensors which are applied onto the part/parts of the body the motions/positions of which are to be measured, at which signals are emitted to a signal processor for storing and/or analyzing. The measuring sensors (1 a-d) are placed in connection to the fulcrums of a parallelogram action linkage (5, 6) attached to the parts of the body the relative movements or positions of which are to be detected and where the imaginary axes about which some of the mentioned motions takes place form a part of the parallelogram action linkage.
Abstract:
An arrangement used to determine the muscular force during the stretching and/or flexion of the knee comprises an adjustable seat (9) and a pivoting measure lever (5) to be connected to the leg, associated to a pivoting hydraulic drive arrangement (7) with a hydraulic motor (8), to a flow regulator (23) to regulate the pivoting speed, to an adjustable pressure regulator valve (25), to a distributing valve (21) for the selection of the pivoting direction and to a distributing valve (22) for selecting the mode of operation. A streak measuring device (15) for measuring the extension determines the flexion of the measuring lever and therefore a torsion moment exerted on the measurement lever during the extension and/or the bending of the knee, and an angular position sensor (14) determines the angular position of the measurement lever (5). A central control unit (26; 50) is connected to the flow regulator (23), to the pressure regulator (25) and to the distributing valves (22, 21) to enable the selection of the operation mode and the swivelling direction. A selection device (27; 95) is connected to the control unit (26; 50) to adjust the flow regulator, the pressure regulator and the distributing valves. Furthermore, a monitoring unit (20; 50) is connected to the control unit (26; 50), to the angular position sensor (14) and to the measuring device (15) to control the angular position and the swivelling speed of the measuring lever (5), in order to automatically determine the bending of the measuring lever (5) when the latter has a predetermined pivoting angle and/or a predetermined pivoting speed.
Abstract:
An apparatus for automatic scanning of a fingerprint by optical scanning of the fingerprint side (2) of a finger (1) comprises a scanning surface (3) with a measuring means (5) for the rate of movement of the finger in relation to the scanning surface, and with a scanning area (4), a lighting means (6), an optical system (7, 8) and an electrical/optical scanning means (9) giving an electrical signal (A) as a function of the fingerprint when the finger is moved in contact with the scanning surface (3) in the direction of the arrow. The scanning is untertaken by line scanning along the scanning line (4) in that the scanning line is imaged onto the active part of the sanning means (9). The active part consists for example of a number of substantially punctiform photodiodes (10) which are coupled in the electrical circuit and receives control signals (B) so that the photodiodes are scanned successively.
Abstract:
The tocodynamometer has a detector which includes a pressure responsive button (2). Linear displacements of the button are converted into electrical signals by variation of inductance in a linear variable differential transducer (20). The button is typically centrally placed within a fixed pressure insensitive annular guard body (1). A leaf spring (4) resists displacement of the button and is calibrated such that under maximum load, deflection outside the linear range of the transducer does not occur. Preferred circuit arrangements include an oscillator detector (22) which supplies the transducer (20) with its exciting voltage and also detects output from the transducer (2). Output from the detector is applied to a differential amplifier whose output is coupled to a receiver demodulator. The output from the receiver demodulator is coupled to a chart recorder or other display means. The circuit also includes power supply circuit and a zero setting for the differential amplifier.
Abstract:
The device (25) for obtaining an image of an object (7) situated obliquely with respect to the image plane, uses a prism (8) illuminated by a light source (1). The device is particularly used for searching, examining and identifying finger-prints. The device comprises between the reflecting prism (3) and the end portion (23) of the device (25) close to the image two deviating prisms (8) and (13) for evening the image field of the object (7), as well as a known optical system (17) to compensate for the astigmatism.
Abstract:
A monitoring device and method for the measurement of penile tumescence, which monitor uses strain gauges (10, 11) connected to a connector device (23) which translates the strain gauge input into a magnetically recordable output signal. A magnetic tape recorder (18) is used for tape recording the monitored penile tumescence. The system further includes test switches and indicating lights (Figs. 1 and 2) for testing the proper functioning of the electronic circuitry and strain gauges involved in the system.
Abstract:
This process comprises the detection of piezo-electrical potentials which are characteristic of a mechanical action exerted on a elongated rigid member of organic material. To that effect, potentials are measured at two points remote of this member by means of two operational amplifiers (CI1 and CI2) so as to obtain a characteristic signal of the stress rather than its derivative and these signals are processed by means of analog operators (OA1, OA2, OA3) to identify the flexion stress ((Alpha)F) and the torsion stress (T) which are then compared to reference values (RT, RF) with the aim to, for example, generate a signal. This process may be used particularly to control the opening of a safety ski binding.
Abstract:
A prosthetic shape sensor comprises a single camera (1) unit and a reflecting surface (2) each mounted on a turntable (5) and arranged opposite each other to define therebetween a space for a stump (4) of a patient. The reflecting surface is shaped to fit between the stump and a leg of the patient. The camera unit includes a light source and the camera unit and the reflecting surface are rotatable together on the turntable through at least l80°. The camera unit can collect a series of silhouette views of the stump upon rotation about the stump.
Abstract:
Die Erfindung betrifft eine Einrichtung zur Überwachung von Personen, insbesondere psychisch Kranker oder an Gedächtnisschwund Leidender, innerhalb offener und hal boffener Anstalten. Um bei geringem Personaleinsatz sicher zustellen, daß keine der zu überwachenden Personen die Anstalt unerkannt oder unerlaubt verläßt, ist an jedem Ausgang der Anstalt eine Vorrichtung zur Erzeugung eines Signalfeldes angeordnet, das ein optisches und/oder akusti sches Signal auslöst, sobald in das Signalfeld eine der zu überwachenden Personen gelangt, die ein Armband aus einem bandförmigen Element trägt, dessen Enden ohne Spezialwerkzeug unlösbar und derart miteinander verbun den sind, daß der Umfang des Armbandes kleiner als der kleinstmögliche Umfang der Hand ist, und das mindestens teilweise aus einem Material hergestellt und/oder mit einer Einlage oder einem unlösbaren Zusatzteil versehen ist, das beim Passieren des Signalfeldes ein Signal auslöst.
Abstract:
Gegenstand der Erfindung ist ein eine Meßeinrichtung zur Erfassung der Volumenänderung eines Körperteils und ein Auswertegerät umfassender Plethysmograph. Die Meßeinrichtung besteht aus einem lichtoptischen Empfän ger, der den in einem festgelegten Abstand (A) von dem lichtoptischen Empfänger angeordneten Körperteil flächen mäßig erfaßt. Das Auswertegerät besteht aus einer Einrich tung, die die Größe der lichtoptisch erfaßten Fläche quantita tiv auswertet. Gemäß einem Ausführungsbeispiel ist der lichtoptische Empfänger (2) eine Videokamera. Das Auswertegrät umfaßt einen Mikrocomputer (9), der die Größe der Fläche (6) des gleichzeitig auf einem Monitor (5) abgebildeten Körperteils (1) numerisch auswertet und das Plethysmogramm auf einem Anzeigegerät (11) ausdruckt.