| Patent application number | Description | Published |
|---|
| 20100100348 | Device for monitoring a product stream for interfering inclusion - A device for monitoring a product stream for undesired inclusions wherein, in a section of the product stream which is to be monitored, a material-specific detection signal is derived by means of a sensor system comprising a plurality of sensors arranged in a staggered manner under formation of a sensor row in the direction of transport of the product stream and by means of an evaluation circuit associated with said sensor system, by simultaneously adding the output signals of the individual sensors in an addition circuit in a correlated manner, said output signals originating from single products with regard to metal particles in the product stream to be checked, and using the output signal of the addition circuit as a detection signal for a metal particle to be discovered. At least one sensor of a sensor row, the output signals of which are added in an antiphase manner to the output signals of other sensors for difference-taking purposes, is provided for the compensation of interfering magnetic fields. The resulting difference signals are evaluated in an addition circuit in a correlated manner, said addition circuit being provided for forming the detection signal. | 04-22-2010 |
| 20110101976 | Device for Detecting Metallically Conductive Parts - A facility for generating a detection signal upon the presence of metallic-conductive parts in a conveyed flow that is at least largely non-conductive, in which, for example, an alternating electromagnetic field is established in a section of the conveyed flow to be monitored by means of an alternating current generator and a transmitter coil system, whereby a variation of the signal of said field that is triggered by passage of a part is detected by a receiver coil system and converted into a detection signal by an analytical circuit. The individual components of the system are distributed over separate circuit modules which in turn act in concert by means of a bus system. | 05-05-2011 |
| 20110109307 | Digitally Operating Device for Detecting Metallically Conductive Parts - A facility for generating a detection signal upon the presence of metallic-conducting parts in a conveyed flow that is at least largely nonconductive, in which an alternating electromagnetic field is established in a section of the conveyed flow to be monitored by means of an alternating current generator via a transmitter coil system, whereby a variation of the signal of said field that is triggered by passage of a part is detected by a receiver coil system and serves, in conjunction with a downstream digital-type analytical circuit, for derivation of a detection signal which then triggers an information and/or elimination of said part. The receiver coil system has an analog-to-digital converter assigned to it and the transmission of the received signal to the analytical circuit proceeds in digital form. An analog-to-digital conversion is also provided for the signal of the alternating current generator and the received signal, being available in digital form, and the signal of the alternating current generator, also being available in digital form, are supplied to the analytical circuit for derivation of the detection signal. | 05-12-2011 |
