Method for the transmission of angle information and apparatus implementing the method
A technology of structural arrangement and angle, which is applied in the direction of transmitting sensing components, converting sensor output, and measuring devices by using electric/magnetic devices, which can solve problems such as errors, enlargement, and inaccurate processing methods
Inactive Publication Date: 2009-01-14
CARL FREUDENBERG KG
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Problems solved by technology
However, this method of processing is not precise enough and there are errors, which increase during acceleration and braking due to dynamic processes
Method used
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[0029] Figure 1 shows a schematic diagram of two signal sequences. Here the signal of the first sequence is represented by 1, and the signal of the second sequence is represented by 2. Signal 1 is designed as a falling edge, while signal 2 is designed as a rising edge. FIG. 1 shows that the angular interval from one first signal to another, ie from falling edge to falling edge, is always constant. The constant spacing (C) is 6°. The interval between two signals 2 in the regular area of the second sequence is also 6°.
[0030]In the irregular area of the second sequence, the spacing between the two signals 2 changes, while the spacing between the two signals 1 remains constant.
[0031] Irregularities in the sequence of the signal 2 can transmit information that is independent of the information transmitted with the first sequence.
[0032] FIG. 1 shows in particular a sequence in which an interval B which is too long compared to a regular interval is sandwiched between...
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The invention relates to a method for transmitting angular information via a rotating device, in which at least one signal sequence is measured, the signals are compared with each other and one signal is different from the others, in order to always ensure a precise and direct measurement Operating parameters, measure two signal sequences and compare them with each other, provide signals regularly through the first sequence, and irregularly provide signals through the second sequence, use magnetic poles as signal generating elements, and the signals of the first sequence are generated from the N pole The transition part from S pole to S pole or from S pole to N pole is generated, and the second sequence of signals is generated from the transition part from S pole to N pole or from N pole to S pole. The invention also relates to a structural arrangement comprising: a device with a rotating signal-generating element provided in the circumferential direction, which element provides two signal sequences when the device is rotated; resulting in different operating parameters.
Description
technical field [0001] The invention relates to a method for transmitting angular information via a rotating device, in which at least one signal sequence is measured, the individual signals are compared with one another, and at least one signal differs from the other signals. Furthermore, the invention relates to an arrangement comprising a rotating device and at least one detector. Background technique [0002] Such methods are already known from the prior art. This method is commonly used to measure rotational speed and angle in motor vehicles. In particular, the operating parameters of the crankshaft or camshaft are measured. A generator wheel is used for carrying out the method, which can be designed both as a gear wheel and as a multipole encoder with magnetized elastomer. [0003] A generator wheel, usually designed as a multipole encoder, alternately has N poles and S poles in its circumferential direction. The fields generated by the poles are measured by corres...
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IPC IPC(8): G01D5/12
CPCG01D5/2457
Inventor H·穆特尔T·克勒贝斯W·科科施齐恩斯基
Owner CARL FREUDENBERG KG