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Driving method and driving apparatus of cross coil of automotive instrument

A coil-driven, automotive instrument technology, applied in instruments, regulating electrical variables, control/regulating systems, etc., can solve the problems of complex operation and high cost of driving methods, and achieve the effect of reducing driving costs, reducing driving costs, and simple and reliable solutions.

Active Publication Date: 2015-08-12
AEROSPACE HI TECH HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of high cost and complicated operation of the driving mode of the existing automobile combination meter

Method used

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  • Driving method and driving apparatus of cross coil of automotive instrument
  • Driving method and driving apparatus of cross coil of automotive instrument

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Specific implementation mode one: refer to figure 1 Specifically explain this embodiment, a method for driving an automobile meter cross coil described in this embodiment, the method is:

[0018] A constant current signal is passed to the first coil of the cross quadrature coil to control the driving current of the second coil to change, so as to drive the cross coil.

specific Embodiment approach 2

[0019] Embodiment 2: The difference between this embodiment and the method for driving the cross coil of an automobile instrument described in Embodiment 1 is that the method of controlling the change of the driving current of the second coil is realized by using a PWM control signal.

specific Embodiment approach 3

[0020] Embodiment 3: The difference between this embodiment and the method for driving the cross coil of an automobile instrument described in Embodiment 1 is that the method of passing a constant current signal to the first coil in the cross quadrature coil is as follows: The first coil in the quadrature coil is connected in series between the positive and negative poles of the constant voltage power supply.

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Abstract

The invention, which relates to the field of the cross quadrature coil driving field, discloses a driving method and driving apparatus of a cross coil of an automotive instrument. With the driving method and apparatus, problems of high cost and complicated operation of the driving way of the existing automotive combined instrument can be solved. A first coil of the cross quadrature coil is connected with a constant current signal to control a driving current of a second coil to make a change, thereby realizing driving of the cross coil. One end of a resistor R2 serves as an input terminal of a PWM signal and the other end of the resistor R2 is connected with a base electrode of a triode; a collector of the triode serves a driving signal output terminal of the cross quadrature coil; and an emitter of the triode is connected with a power ground of a 12-V power supply and then is used as a negative connecting terminal of the cross quadrature coil. A positive electrode of the 12-V power supply is connected with one end of a resistor R1 and the other end of the resistor R1 serves as a positive connecting terminal of the cross quadrature coil. The driving method and driving apparatus can be used for application of cross quadrature coil driven by the PWM to an automotive combined instrument.

Description

technical field [0001] The invention relates to a driving method and a driving device for a cross coil of an automobile instrument. The invention belongs to the technical field of cross quadrature coil driving. Background technique [0002] The pointers of the existing automobile combination instruments are all driven by stepper motors or cross quadrature coils, and the way of driving the stepper motors or cross quadrature coils is directly driven by the 4 ports provided by the meter microcontroller, or the instrument microcontroller is externally driven. A separate dedicated motor driver chip driver. This way of driving the vehicle's instrument cluster is extremely costly, and an alternative is urgently needed in the low-cost instrument scheme. Contents of the invention [0003] The invention aims to solve the problems of high cost and complicated operation of the driving mode of the existing automobile combination meter. A driving method and a driving device for a cro...

Claims

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Application Information

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IPC IPC(8): G05F1/565
Inventor 佟大龙刘金泽张秀颖邓雷
Owner AEROSPACE HI TECH HLDG GROUP
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