Method for measuring transmission paths by means of compensated amplitude measurement and delta-sigma method and device for carrying out the method
A technology of transmission path and transmission characteristics, used in measurement devices, radio wave measurement systems, and re-radiation, etc., can solve the problems of difficult to manufacture systems, unmanufacturable costs, complex simulation production tests, etc.
Active Publication Date: 2016-08-31
ELMOS SEMICON SE
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Problems solved by technology
It needs to have adjustable amplifiers, or in other words analog multipliers, which usually cannot be produced without significant cost in temperature stable conditions
Such a system is difficult to manufacture
It especially requires very complex simulated production testing
Method used
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Embodiment Construction
[0064] first according to figure 1 (schematic block diagram) and figure 2 (signal diagram) to explain the invention:
[0065] The sensor 100 according to the invention comprises a signal generator 1 which generates a signal 2, usually a clock signal. Depending on the position of the switch 3 , this signal 2 is diverted to the transmitter 4 via an amplifier 24 designed as a driver module as a transmitter feed signal 26 or as a compensation feed signal 25 via an amplifier 23 designed as a driver module to a compensation send device 5. In this exemplary case, a send LED 4 and a compensating send LED 5 are involved. The discussion of optical systems based on LEDs and photodiodes continues below, but other systems can be envisaged instead, such as
[0066] · systems based on the inductive transmission of signals and in which the transmitter and receiver are coils;
[0067] systems based on capacitive signaling and in which capacitor plates are used as transmitters and receive...
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It is used to measure the transmission characteristics of the first transmission path (6) between the first transmitter (4) and the receiver (8).The first transmitter (4) sends the first signal (7) to the first transmission path (6).After passing at least a part of the first transmission path (6), the receiver (8) detects the first signal (7).The second transmitter (5) sends the second signal (19) to the second transmission path (20). The second transmission path is basically known or can be determined in advance.Receive the second signal (19) in the receiver (8), and overlap it with the first signal (7) in an additional manner.The sending signal (2) is allocated in a short -term adjustable manner (2) between the first transmitter (4) and the second transmitter (5), preferably transform the sending signal between them or according to the phase or according to the phase.The receiving signal (27) received by the transmitter (8) includes the first signal component (27A) assigned to the first transmitter (4) and the second signal component (27B) assigned to the second transmitter (5)Among them, the average first signal component (27A) within the predefined time range is basically the same as the average second signal component (27B), andSubject to the first transmitter (4) and the second transmitter (5) and particularly adjust the adjustment signal of adjustable conversion.
Description
technical field [0001] The invention relates to a method and a device and a sensor for measuring a signal transmission channel from a transmitter via a transmission path to a sensor. Background technique [0002] In many fields of application, the transmission channel from the transmitter to the sensor must be determined. For example, it may be necessary to determine the distance of a reference object to other objects. In this case, for example, the distance can be expressed by 1 / r 4 The resulting attenuation of the optical signal amplitude is used to measure distance. [0003] Numerous compensation methods are known in this regard, in which the actual transmission signal and the compensation signal are superimposed on the sensor, so that the sensor receives an almost constant signal overall. An example is as follows: [0004] DE10001955A1 [0005] DE10024156A1 [0006] DE19839730C1 [0007] DE930983U1 [0008] DE10001943C1 [0009] DE10346741B3 [0010] DE10200402...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01S7/486G01S7/497G01S17/04G01S17/931
CPCG01S7/486G01S7/497G01S7/526G01S17/04G01S17/931
Inventor E·施皮格尔
Owner ELMOS SEMICON SE