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Time-to-digital conversion integrated circuit and method

A time-to-digital conversion, integrated circuit technology, applied in time-to-digital converters, electrical unknown time interval measurement, devices for measuring time intervals, etc., can solve the problems of low speed and accuracy, limited processing capacity of pulsed time-to-digital conversion circuits , to achieve the effect of improving work performance, high communication efficiency and processing speed, and large time detection range

Pending Publication Date: 2020-05-22
HANGZHOU RUIMENG TECH
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Problems solved by technology

However, the existing pulse-type time-to-digital conversion circuits have limited processing capacity, low speed and low precision, especially in outdoor harsh environment applications of laser ranging

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  • Time-to-digital conversion integrated circuit and method

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Embodiment Construction

[0038] The core of the present application is to provide a time-to-digital conversion integrated circuit and method, so as to effectively improve the performance in terms of time measurement range and measurement efficiency.

[0039] In order to describe the technical solutions in the embodiments of the present application more clearly and completely, the technical solutions in the embodiments of the present application will be introduced below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0040] see figure 1 As shown, the embodiment of the present application discloses a time-to-digital conversion integrated circuit, including a con...

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Abstract

The invention discloses a time-to-digital conversion integrated circuit and method, and the integrated circuit comprises a control register; a clock unit; a time-to-digital converter which is used forcarrying out edge time detection on a received start pulse, a received first channel stop pulse and a received second channel stop pulse; an original data memory which is connected with the time-to-digital converter and is used for storing the time data detected by the time-to-digital converter; an arithmetic logic unit which is connected with the original data memory and is used for automatically calculating a first group of interval duration data of the first channel stop pulse and the start pulse and a second group of interval duration data of the second channel stop pulse and the start pulse according to the time data; a data output register which is connected with the arithmetic logic unit and is used for storing a calculation result of the arithmetic logic unit; and an SPI interfacewhich is connected with the data output register and is used for being externally connected with an MCU to read and write data. According to the invention, high communication efficiency and processing speed can be realized, and the working performance is greatly improved.

Description

technical field [0001] The present application relates to the technical field of circuit design, in particular to a time-to-digital conversion integrated circuit and method. Background technique [0002] Lidar is increasingly used in ranging and automatic obstacle avoidance in areas such as unmanned vehicles, automatic logistics vehicles, and drone cruises. The phase method has disadvantages such as short distance, long time, and slow speed. The trigonometric method has disadvantages such as poor precision and complex structure. It is best to use high-precision and high-speed pulse-type time-to-digital conversion (belonging to the time difference method) for laser radar. choose. [0003] Pulse-type time-to-digital conversion has also begun to be applied to laser ranging, such as the built-in laser ranging function of telescopes. However, the existing pulse-type time-to-digital conversion circuit has limited processing capacity, low speed and low precision, especially in ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04F10/00
CPCG04F10/005Y02D10/00
Inventor 王建军章海平陆晓云戴金樑
Owner HANGZHOU RUIMENG TECH
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