JP2010193453A5

JP2010193453A5 -

Info

Publication number: JP2010193453A5
Application number: JP2010030088A
Authority: JP
Filing date: 2010-02-15
Publication date: 2013-03-21

Claims

A receiving device for connecting to a current interface (6, 6a, 6b) comprising at least a connecting device (8), a reference voltage source (10) and a receiving comparator (9),
The connection device (8) receives a current signal (S0) via the current interface (6, 6a, 6b) and outputs a reception signal (S1) as a voltage signal;
The reference voltage source (10) outputs a reference voltage (UR),
The receiving comparator (9) receives the reception signal (S1) and before Symbol reference voltage (UR), and outputs the difference signal (S 2),
In receiving apparatus,
The reference voltage source (10) adjusts the reference voltage (UR) based on the evaluation of the difference signal (S2).
A receiving apparatus.

The receiving device comprises a control circuit (9,15,10) for adjusting the difference signal (S2) by a change in the reference voltage (UR),
The receiving apparatus according to claim 1.

The received signal (S1) is phase-position modulated.
The receiving apparatus according to claim 1 or 2, wherein

The receiver has a difference evaluation device (15), and the difference evaluation device (15)
Receiving the difference signal (S2);
From the number of high bits of the difference signal in the measurement period (Δt) (S2) (H ) and B Bitto (L), and / or, the total of the high voltage level of the difference signal in the measurement period (Δt) (S2) From the duration and total duration of the low voltage level, evaluate the currently adjusted reference voltage (UR),
Based on this evaluation, a control signal (S3) is output to the reference voltage source (10) for outputting a reference voltage (UR).
The receiving device according to any one of claims 1 to 3, wherein

When the number of high bits (H) in the measurement period (Δt) is larger than the number of low bits (L), and / or when the total period of the high voltage level is longer than the total period of the low voltage level The difference evaluation device (15) outputs a control signal (S3) for increasing the reference voltage (UR),
If the number of the low bit (L) in the measurement period (Delta] t) is greater than the number of the high bit (H), it was or, where the total duration of the low voltage level is longer than the total duration of the high voltage level The difference evaluation device (15) outputs a control signal (S3) for reducing the reference voltage (UR).
The receiving apparatus according to claim 4.

The current interface (6, 6a, 6b) is configured as a bus system (6, 6a, 6b) comprising a plurality of bus connections (5),
The connection device (8) is provided for connecting to at least two transmitters (2) of the bus system (6, 6a, 6b),
The receiving apparatus according to claim 1, wherein the receiving apparatus includes:

The receiving device (3) according to any one of claims 1 to 6, an encoding device (12) for converting the difference signal (S2) into a data signal (S4), and the data signal (S4) Control device with another device (14) for processing.

In a circuit device comprising the receiving device (3) according to any one of claims 1 to 6 and at least one transmitter (2),
The transmitter (2) is connected to the receiver (3) via the current interface (6, 6a, 6b), and a current signal (S0) via the current interface (6, 6a, 6b). ) To the receiver (3),
A circuit device.

The at least one transmitter (2) does not include an energy source, and outputs a channel-coded signal to the receiver (3).
The circuit device according to claim 8.

Said circuit arrangement comprises at least two transmitters (2);
The current interface (6, 6a, 6b) is configured as a bus system,
The bus system connects the receiving device (3) and the at least two transmitters (2).
The circuit device according to claim 8 or 9, wherein

The at least one transmitter (2) is a sensor (2) and the receiver (3) is part of a central controller (4);
The circuit device according to any one of claims 8 to 10, wherein:

In the method for detecting the data signal (S4) from the current signal (S0), at least,
Converting at least one current signal (S0) into a received signal (S1) formed as a voltage signal;
The received signal (S1) is compared with a reference voltage (UR) and a difference signal (S2) is output,
A data signal (S4) is detected from the difference signal (S2);
At this time, the reference voltage (UR) is formed by evaluating the difference signal (S2).
A method characterized by that.

The current signal (S0) and the reception signal (S1) are phase-position modulated,
The number of high bits (H) and the number of low bits (L) included in the difference signal (S2) in the measurement period (Δt) and / or the high voltage level of the difference signal (S2) in the measurement period (Δt) By detecting the total period of the low voltage level, the currently adjusted reference voltage (UR) is evaluated, and the reference voltage (UR) is changed according to the result of the evaluation .
13. The method of claim 12, wherein:

As the number of the number and the low bit of the high bit contained in said difference signal (S2) between measuring periodically (Δt) (H) (L ) is the same, or, before KIHA Lee voltage in the measurement period (Delta] t) The difference signal (S2) is adjusted by adjusting the reference voltage (UR) so that the total period of the level and the total period of the low voltage level are the same.
14. A method according to claim 12 or 13, characterized in that