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Controlling device and method for driving same

A control device and microprocessor technology, applied in program control, measuring device, computer control, etc., can solve problems affecting frequency, etc., and achieve the effect of reliable distance measurement and low cost

Inactive Publication Date: 2012-05-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

US 7061334 B1 proposes to influence the frequency via the voltage supply of the ring oscillator, however, this also only partially overcomes error fluctuations

Method used

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  • Controlling device and method for driving same
  • Controlling device and method for driving same

Examples

Experimental program
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Embodiment Construction

[0012] figure 1 A control device 1 is shown which can be used for any electronic application. The application to motor vehicles is particularly advantageous, since in the manufacture of motor vehicles mass production, high successful savings (Einsparerfolg) can be achieved overall with small savings potentials (Einsparpotenzial) per product by means of modifications. The control device according to the invention is particularly advantageous for use in parking assistance for motor vehicles, wherein not only data communication takes place by means of a control device of this type, but also time measurement for distance measurement is carried out in the control device. The invention will therefore be explained below using the example of a control device for a parking assistance in a motor vehicle.

[0013] A microprocessor 2 with a computing unit 3 and a ring oscillator 4 is provided in the control device 1 . As such, the designation "microprocessor" includes microcontrollers. ...

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Abstract

The controller (1) comprises a microprocessor (2) and interfaces (14,15,16,17,28,30) for a sensor (18,19,20,21) and for output units (29,31). The microprocessor processes and communicates data through the interfaces, which is synchronized by an internal ring oscillator (4) of the microprocessor. The microprocessor generates an electronic signal for controlling loudspeaker for the sound generation, such that the frequency of the generated sound signal is influenced from the resonant frequency of the ring oscillator. The microprocessor has a time measuring unit (5). An independent claim is alsoincluded for a method for operating controller with a microprocessor.

Description

technical field [0001] The invention relates to a control device and a method for operating the control device. Background technique [0002] In particular, a control device is known for measuring the distance of a motor vehicle to obstacles surrounding the motor vehicle, wherein an external oscillator is connected to the control device for supplying the control device with a clock signal. In particular, a crystal oscillator with a crystal resonator, which can emit a frequency signal very precisely, is used here. In addition to the crystal oscillator, other passive components, such as resistors or capacitors, are usually required for connecting the crystal oscillator. A very precise clock frequency can be provided by the external crystal oscillator, so that in particular the control device can be connected to the motor vehicle bus and can be determined as precisely as possible for the determination signal from the distance sensor to the obstacle and back from the obstacle t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042B60W30/06G08G1/16B60R16/02G01S15/93G01S15/931
CPCG01S15/931G01S2013/9314G01S7/524
Inventor M·黑林M·菲德勒M·格拉赫
Owner ROBERT BOSCH GMBH
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