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Devices for Synchronizing Clock Frequency

A technology of clock frequency and equipment, applied in the direction of protection equipment, synchronization device, synchronization information channel, etc., can solve the problem of infeasibility

Active Publication Date: 2018-09-21
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in most unfavorable cases, asynchronous communication via e.g. a UART interface may not be feasible for automation technology due to the aforementioned drawbacks

Method used

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  • Devices for Synchronizing Clock Frequency
  • Devices for Synchronizing Clock Frequency

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A block diagram of a first embodiment of the inventive device for synchronizing the clock frequency of a first electronic unit μC1 arranged on the primary side I and a second electronic unit μC2 arranged on the secondary side II is shown. figure 2 Additional details of the circuit are shown.

[0023] In the case of measuring devices that determine and / or monitor process variables, a primary-side electronics unit μC1, preferably a microprocessor or microcontroller, is arranged in the measurement transmitter MU, while a secondary side, preferably likewise a microprocessor or microcontroller The stage-side electronics unit μC2 is arranged in the sensor S or the actuator A. The data exchange between the two electronic units μC1 , μC2 takes place via asynchronous and strongly time-dependent communication.

[0024] Associated with the first electronic unit μC1 is an internal or external clock signal generator CLK. Due to the synchronization of the clock frequenci...

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Abstract

The invention relates to a device for synchronizing the clock frequency of a first electronic unit (μC1) arranged on the primary side (I) and a second electronic unit (μC2) arranged on the secondary side (II), wherein the first electronic The unit (μC1) is associated with a clock signal generator (CLK) which generates a clock signal with a reference clock frequency (f / n), where the first electronic unit (μC1) and the second electronic unit (μC2) The transmission unit (DC / DC) is provided in between, wherein a first control unit (10) is provided to operate the transmission unit (DC / DC) with a clock frequency (f / n) of the first electronic unit ( μC1) the fraction (n) of the reference clock frequency (f), wherein a second control unit (11) is provided for coupling out the clock frequency (f / n) on the secondary side and based on this coupled out clock frequency (f / n) Generating a clock frequency (m·f / n, m=1, 2, . . . ) for the second electronic unit (μC2) synchronized with the reference clock frequency (f) of the first electronic unit (μC1).

Description

technical field [0001] The invention relates to a device for synchronizing the clock frequencies of a first electronic unit arranged on the primary side and a second electronic unit arranged on the secondary side. Background technique [0002] Measuring devices for automatic technology are known in the prior art, which are equipped with two electronic units, in many cases galvanic isolation from each other. The electronics unit on the primary side is usually connected to the power supply of the measuring device, while the electronics unit on the secondary side is associated with sensors or actuators. For energy and data transmission, usually one or more galvanic isolated interfaces are provided, which can be implemented inductively, capacitively or optically. Communication between two electronic units takes place as described in DE 10 2006 051 900 A1, for example by frequency modulation and in the opposite direction by load modulation inductively coupling the primary side t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00G08C17/04G01D3/08H01F19/08
CPCH01F2019/085H04L7/0008
Inventor 沃尔特·龙巴赫佛朗哥·费拉多阿尔明·韦内特卡伊·乌彭坎普
Owner EHNDRESS KHAUZER GMBKH KO KG