A multi-channel high-speed pulse counting system and counting method
A technology of high-speed pulse and counting method, applied in the field of information processing, can solve the problem that the accuracy and reliability are difficult to meet the requirements, and achieve the effect of improving the counting accuracy and reliability, reducing the implementation cost, and simplifying the hardware implementation method.
Active Publication Date: 2021-05-25
HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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[0002] High-speed pulse signal is a common output method of inertial measurement combination. The accuracy of high-speed pulse signal acquisition directly affects the accuracy of inertial measurement combination. With the continuous improvement of pulse signal frequency, the accuracy and reliability of traditional counting methods are difficult to achieve. Requirements, it is increasingly important to invent a high-precision, simple and reliable counting method
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0036] figure 1 The overall block diagram of the multi-channel high-speed pulse counting system provided by the present invention; figure 1 As shown, the multi-channel high-speed pulse counting system provided by the present invention includes a clock subsystem, a CPLD subsystem, a computer subsystem, a power supply subsystem and a plurality of pulse input subsystems; a plurality of pulse input...
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The invention discloses a multi-channel high-speed pulse counting system and a counting method, comprising the following steps: S1: divide the frequency of a high-speed clock signal to generate a frequency-divided clock signal; Synchronize and differentiate to generate a timing interrupt signal; S2: Synchronize and differentiate the falling edge of the high-speed clock signal with the high-speed pulse signal, and use the signal after synchronization and differentiation as the counting input signal; S3: Accumulate the counting input signal, Get the count value of the high-speed pulse signal; use the falling edge of the timing interrupt signal to latch the count value; S4: use the rising edge of the timing interrupt signal to trigger the timing interrupt, read the count value and accumulate the conversion; S5: read according to the preset Take the period to display and store the pulse counting result. The invention can effectively improve the counting accuracy and reliability of the multi-channel high-speed pulse signal, greatly simplifies the hardware implementation mode, and reduces the implementation cost.
Description
technical field [0001] The invention belongs to the technical field of information processing, and more specifically relates to a multi-channel high-speed pulse counting system and a counting method. Background technique [0002] High-speed pulse signal is a common output method of inertial measurement combination. The accuracy of high-speed pulse signal acquisition directly affects the accuracy of inertial measurement combination. With the continuous improvement of pulse signal frequency, the accuracy and reliability of traditional counting methods are difficult to achieve. Requirements, it is increasingly important to invent a high-precision, simple and reliable counting method. Contents of the invention [0003] Aiming at the above defects or improvement needs of the prior art, the present invention provides a multi-channel high-speed pulse counting system and counting method, adopting a synchronous counting method combining software and hardware to realize the acquisit...
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IPC IPC(8): H03K21/00
CPCH03K21/00
Inventor 卢联杰姚少君宋长哲张锐王明博罗飞燕雷鸣
Owner HUBEI SANJIANG AEROSPACE WANFENG TECH DEV