TDC_ADC multiplexing technology

A multiplexing technology and input terminal technology, applied in the field of circuits, can solve problems such as large hardware resources and large number of chips, and achieve the effect of reducing consumption, circuit area and power consumption

Active Publication Date: 2019-01-18
西安电子科技大学昆山创新研究院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for the lidar with the above structure, ADC15 can only realize the quantization of signal strength, and TDC16 can only realize the quantization of time domai

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It should be understood that the data so used are interchangeable under appropria...

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Abstract

The invention provides a TDC_ADC multiplexing technology. The TDC_ADC multiplexing technology includes a signal processing circuit, and the signal processing circuit is configured to receive a first time domain signal through a first input end, receive a second time domain signal through a second input end, and receive a voltage analog signal through a third input end; process the first time domain signal and the second time domain signal to generate a first digital signal, and process the voltage analog signal to generate a second digital signal, wherein the first digital signal is used to indicate the time interval between the first time domain signal and the second time domain signal, and the second digital signal is used to indicate the signal intensity of the voltage analog signal; and output the first digital signal and the second digital signal according to the time through an output terminal. The TDC_ADC multiplexing technology provided by the invention can simultaneously quantize the time domain signal and the voltage domain signal, reduces the circuit area and power consumption, and reduces the consumption of hardware resources.

Description

technical field [0001] The present invention relates to the field of circuit technology, in particular to a time-to-digital converter (Time-to-Digital Converter, TDC)-analog-to-digital converter (Analog-to-Digital Converter, ADC) multiplexing technology. Background technique [0002] Lidar is a radar system that detects the distance, azimuth, height, speed, attitude and other characteristic quantities of a target by emitting a laser beam. Lidar has been widely used in military, aerospace, surveillance, autonomous driving, home appliances, robots and other fields. [0003] figure 1 It is a schematic diagram of the structure of the existing laser radar. Such as figure 1 As shown, the lidar may include: a trigger 11 , an optical transmitter 12 , a photoelectric converter 13 , an amplifier 143 , an amplifier 144 , a comparator 15 , an ADC 17 and a TDC 16 . After the trigger 11 generates the trigger signal, it will generate a start pulse signal (marked as Start signal). At t...

Claims

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Application Information

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IPC IPC(8): H03M1/00H03M1/12
CPCH03M1/002H03M1/1215
Inventor 刘马良刘海珠杜佳乐朱樟明杨银堂
Owner 西安电子科技大学昆山创新研究院
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