Pulse generation and pulse width measurement board based on PCI (Peripheral Component Interconnect) bus

A PCI bus, pulse generation technology, applied in the field of PWM control and other pulse measurement systems, can solve the problems of reducing pulse continuity, occupying host computer resources, and application limitations, etc., to achieve automatic adjustment, reduce work intensity, and achieve measurement. Effect

Inactive Publication Date: 2017-05-31
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The existing pulse generation board cannot realize the automatic adjustment of the pulse width. Each adjustment needs to be configured through the host computer, which reduces the continuity between

Method used

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  • Pulse generation and pulse width measurement board based on PCI (Peripheral Component Interconnect) bus

Examples

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Example Embodiment

[0018] Such as figure 1 As shown, the present invention is composed of a power supply unit 1, a PCI interface unit 2, a pulse generation unit 3, a pulse width measurement unit 4, and a level conversion unit 5.

[0019] The power supply unit 1 is the power supply system of the present invention, which is composed of LM1117-2.5 and LM1117-1.2 and their peripheral circuits (mainly decoupling capacitors). This unit converts the +3.3V level provided by the PCI bus to +2.5V and +1.2V as the core voltage of the FPGA.

[0020] The PCI interface unit 2 is composed of a dedicated bridge chip PCI9054 and its peripheral circuits, as shown in FIG. 2. The dedicated bridge chip PCI9054 implements the electrical specifications and PCI protocol of the PCI bus, with strong stability and small size, which is very suitable for occasions that require high board area.

[0021] The pulse generating unit 3 and the pulse width measuring unit 4 are composed of FPGA (model EP3C40F484C8N) and its peripheral c...

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Abstract

The invention provides a pulse generation and pulse width measurement board based on a PCI (Peripheral Component Interconnect) bus. The pulse generation and pulse width measurement board comprises a power supply unit, a PCI interface unit, a pulse generation unit, a pulse width measurement unit and a level conversion unit, wherein the power supply unit is mainly composed of a linear power supply module and a peripheral circuit of the linear power supply module and is used for supplying electric energy to other circuit units; the PCI interface unit is used for realizing communication with the PCI bus; the pulse generation unit is used for generating a pulse signal; the pulse width measurement unit is used for testing pulse width; the level conversion unit is used for realizing level match with an external load. By adopting the pulse generation and pulse width measurement board based on the PCI bus, a PWM (Pulse Width Modulation) control signal with the adjustable width can be generated and a servo motor is controlled; the pulse generation and pulse width measurement board can be applied to a measurement system and is used for capturing the pulse width.

Description

technical field [0001] The invention belongs to the field of detection technology and automatic devices, and is suitable for PWM control of servo motors and other pulse measurement systems. Background technique [0002] The pulse generation and pulse width measurement board is an important device for PWM control of the servo motor, and the speed control of the servo motor can be realized by adjusting the PWM width. [0003] The existing pulse generation board cannot realize the automatic adjustment of the pulse width. Each adjustment needs to be configured through the host computer, which reduces the continuity between pulses, occupies the resources of the host computer, and is expensive. [0004] The existing pulse measurement boards all take high level as the measurement object, and the application occasions are limited. [0005] Therefore, realizing the automatic adjustment of the generated pulse width and the low-level width of the test pulse signal becomes the problem ...

Claims

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Application Information

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IPC IPC(8): G01R29/02G06F1/06
CPCG01R29/023G06F1/06
Inventor 高华东扈亦越梁晨于德洋吴久峰
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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