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Method and system for acquiring rotating speed and temperature of motor through signal line

A technology of temperature acquisition system and acquisition method, applied in the direction of linear/angular velocity measurement, thermometer, application of thermometer, etc., can solve the problems that the actual signal cannot be obtained, the temperature signal is easily interfered, etc.

Pending Publication Date: 2021-10-01
NEW ANANDA DRIVE TECHN SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The temperature signal in the mixed signal is easily disturbed when the motor of this patent is in a high-power working state, and the actual signal cannot be obtained

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  • Method and system for acquiring rotating speed and temperature of motor through signal line

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Embodiment 1

[0034] The invention adopts low-pass and high-pass filtering methods for the mixed signal of motor speed and temperature, decouples and separates the speed signal and temperature signal, and obtains the speed signal and temperature signal respectively.

[0035] According to a method provided by the present invention to realize the speed and temperature acquisition method of the motor through a signal line, such as figure 1 shown, including:

[0036] Step 1: Collect the motor speed signal, and convert the motor speed into a periodic pulse signal by using a digital Hall sensor;

[0037] Step 2: Collect the temperature of the motor and convert it into an analog voltage signal through the temperature sensor;

[0038] Step 3: Signal fusion, modulate the pulse signal and analog voltage signal into a mixed signal, and transmit it through a signal line;

[0039] Step 4: The controller end filters the mixed signal in step 3 to obtain the speed signal and temperature signal respective...

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Abstract

The invention provides a method and a system for acquiring the rotating speed and the temperature of a motor through a signal line. The method comprises the following steps: S1, acquiring a rotating speed signal and the temperature of the motor; S2, converting the rotating speed signal of the motor into a periodic pulse signal; S3, converting the motor temperature into an analog voltage signal; S4, modulating the pulse signal and the analog voltage signal into a mixed signal, and transmitting the mixed signal to a controller end through a signal line; and S5, filtering the mixed signal by the control end, and obtaining a speed signal and a temperature signal. According to the invention, low-pass and high-pass filtering algorithm processing is carried out on the mixed signal of the temperature and the speed of the motor, and the temperature signal and the speed signal are decoupled, so that the problem that the actual temperature signal cannot be obtained due to the fact that the temperature signal in the mixed signal is easily interfered when the motor is in a high-power working state is solved.

Description

technical field [0001] The invention relates to the technical field of motor signal sampling, in particular to a method and a system for collecting the rotational speed and temperature of a motor through a single signal line. Background technique [0002] In the prior art, the temperature signal sampling and the speed signal sampling of the motor must be realized through two signal lines. If one of the signal lines breaks, the signal will be lost, causing system failure. However, if the two signal lines are directly combined into one, it will cause signal confusion, and the motor cannot collect effective signals. In addition, since the motor needs two signal wires, the aperture diameter of the signal lead-out wire of the motor is greatly increased, thereby affecting the structural design and installation of the motor. [0003] Patent document CN203323788U (application number: 201320246855.3) discloses a motor signal sampling circuit for an electric bicycle, including a spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/481G01K13/00G01D21/02
CPCG01P3/481G01K13/00G01D21/02
Inventor 黄洪岳仇爱华
Owner NEW ANANDA DRIVE TECHN SHANGHAI