CN109245765A - TDC_ADC multiplexing technology - Google Patents
TDC_ADC multiplexing technology Download PDFInfo
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- CN109245765A CN109245765A CN201810714718.5A CN201810714718A CN109245765A CN 109245765 A CN109245765 A CN 109245765A CN 201810714718 A CN201810714718 A CN 201810714718A CN 109245765 A CN109245765 A CN 109245765A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/002—Provisions or arrangements for saving power, e.g. by allowing a sleep mode, using lower supply voltage for downstream stages, using multiple clock domains or by selectively turning on stages when needed
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/1205—Multiplexed conversion systems
- H03M1/121—Interleaved, i.e. using multiple converters or converter parts for one channel
- H03M1/1215—Interleaved, i.e. using multiple converters or converter parts for one channel using time-division multiplexing
Abstract
The present invention provides a kind of TDC_ADC multiplexing technology.TDC_ADC multiplexing technology includes signal processing circuit；Signal processing circuit is used for: being received first time domain signal by first input end, is received the second time-domain signal by the second input terminal, receives voltage analog signal by third input terminal；Processing is carried out to first time domain signal and the second time-domain signal and generates the first digital signal, processing is carried out to voltage analog signal and generates the second digital signal；Wherein, the first digital signal is used to indicate the time interval between first time domain signal and the second time-domain signal；Second digital signal is used to indicate the signal strength of voltage analog signal；The first digital signal and the second digital signal are exported by output end timesharing.TDC_ADC multiplexing technology provided by the invention, quantization while being completed at the same time time-domain signal and voltage domain signal reduce circuit area and power consumption, reduce the consumption of hardware resource.
Description
Technical field
The present invention relates to field of circuit technology more particularly to a kind of time-to-digit converter (Time-to-Digital
Converter, TDC) _ analog-digital converter (Analog-to-Digital Converter, ADC) multiplexing technology.
Background technique
Laser radar is by emitting the characteristic quantities such as distance, orientation, height, speed, the posture of detecting laser beam target
Radar system.Laser radar has been widely used for the fields such as military affairs, space flight, monitoring, automatic Pilot, household electrical appliances, robot.
Fig. 1 is the structural schematic diagram of existing laser radar.As shown in Figure 1, laser radar may include: trigger 11,
Optical transmitting set 12, photoelectric converter 13, amplifier 143, amplifier 144, comparator 15, ADC17 and TDC16.When trigger 11
After generating trigger signal, it can generate and start pulse signal (labeled as Start signal).At this point, optical transmitting set 12 emits light pulse
Signal.Light pulse signal is received after target reflects by laser radar.Photoelectric conversion output is carried out by photoelectric converter 13
Electric signal.Electric signal passes through amplifier 143 and comparator 15 all the way, and triggering output stops arteries and veins after electric signal is more than pre-determined threshold
Rush signal (labeled as Stop signal).TDC16 can measure the time interval between Start signal and Stop signal, thus real
Existing laser radar range.Another way electric signal is input to ADC15 by amplifier 144, and signal may be implemented by analog-to-digital conversion
The quantization of intensity.
But the laser radar of above structure, ADC15 only can be realized the quantization of signal strength, TDC16 only can be realized
The quantization of time-domain.In needing the scene to time-domain signal and voltage domain signal while quantization, number of chips is more, consumption
Hardware resource is more.
Summary of the invention
The present invention provides a kind of TDC_ADC multiplexing technology, can be completed at the same time the same of time-domain signal and voltage domain signal
When quantify, reduce circuit area and power consumption, reduce the consumption of hardware resource.
In a first aspect, the present invention provides a kind of TDC_ADC multiplexing technology, comprising:
Signal processing circuit, the signal processing circuit be provided with first input end, the second input terminal, third input terminal and
Output end；
The signal processing circuit, is used for:
First time domain signal is received by the first input end, the second time-domain is received by second input terminal
Signal receives voltage analog signal by the third input terminal；
Processing is carried out to first time domain signal and second time-domain signal and generates the first digital signal, to institute
It states voltage analog signal and carries out processing the second digital signal of generation；Wherein, first digital signal is used to indicate described first
Time interval between time-domain signal and second time-domain signal；Second digital signal is used to indicate the voltage
The signal strength of analog signal；
First digital signal and second digital signal are exported by the output end timesharing.
Second aspect, the present invention provide a kind of TDC_ADC multiplexing technology, comprising:
Trigger, optical transmitting set, photoelectric converter, the first amplifier, the second amplifier, comparator and analog-digital converter；
The analog-digital converter includes signal processing circuit, and the signal processing circuit is provided with first input end, the second input terminal,
Three input terminals and output end；
The output end of the trigger is electrically connected with the input terminal of the optical transmitting set and the first input end respectively；
Two output ends of the photoelectric converter amplify with the input terminal of first amplifier and described second respectively
The input terminal of device is electrically connected, and the output end of first amplifier is electrically connected with the input terminal of the comparator, the comparator
Output end be electrically connected with second input terminal；The output end of second amplifier is electrically connected with the third input terminal；
The trigger, for exporting trigger signal to the optical transmitting set, to when first input end output first
Between domain signal；
The optical transmitting set, for emitting optical signal according to the trigger signal；
The reflected light signal is converted to electric signal for receiving reflected light signal by the photoelectric converter, and by institute
Electric signal is stated to be exported respectively to first amplifier and second amplifier；
First amplifier is believed for generating the second analog signal according to the electric signal, and by second simulation
Number output is to the comparator；
The comparator, for generating the second time-domain signal according to second analog signal, and when by described second
Between domain signal export to second input terminal；
Second amplifier is believed for generating voltage analog signal according to the electric signal, and by the voltage analog
Number output is to the third input terminal；
The signal processing circuit, is used for:
First time domain signal is received by the first input end, receives described the by second input terminal
Two time-domain signals receive the voltage analog signal by the third input terminal；
Processing is carried out to first time domain signal and second time-domain signal and generates the first digital signal, to institute
It states voltage analog signal and carries out processing the second digital signal of generation；Wherein, first digital signal is used to indicate described first
Time interval between time-domain signal and second time-domain signal；Second digital signal is used to indicate the voltage
The signal strength of analog signal；
First digital signal and second digital signal are exported by the output end timesharing.
The third aspect, the present invention provide a kind of electronic equipment, provide including above-mentioned first aspect any embodiment
TDC_ADC multiplexing technology.
Fourth aspect, the present invention provide a kind of chip, the TDC_ADC provided including above-mentioned first aspect any embodiment
Multiplexing technology.
The present invention provides a kind of TDC_ADC multiplexing technology, can simultaneously input time domain signal and voltage domain signal, complete
Quantify while time-domain signal and voltage domain signal, reduce circuit area and power consumption, reduce the consumption of hardware resource, expands
The application scenarios of analog-digital converter are opened up.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of existing laser radar；
Fig. 2 is the structural schematic diagram for the TDC_ADC multiplexing technology that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram of TDC_ADC multiplexing technology provided by Embodiment 2 of the present invention；
Fig. 4 is the structural schematic diagram for the TDC_ADC multiplexing technology that the embodiment of the present invention one provides；
Fig. 5 is the structural schematic diagram of TDC_ADC multiplexing technology provided by Embodiment 2 of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances.
In addition, it is necessary to explanation, in the present invention, " electrical connection ", which can be, to be directly connected to, and can also pass through intermediate matchmaker
Jie is indirectly connected.Unless otherwise restricted clearly, for the ordinary skill in the art, can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.
Fig. 2 is the structural schematic diagram for the TDC_ADC multiplexing technology that the embodiment of the present invention one provides.It should be noted that this
The TDC_ADC multiplexing technology that embodiment provides, can be analog-digital converter.TDC_ADC multiplexing technology provided in this embodiment, can
To be applied in the scene to time-domain signal and voltage domain signal while quantization, for example, laser radar system.Such as Fig. 2
Shown, TDC_ADC multiplexing technology provided in this embodiment may include:
Signal processing circuit 21, it is defeated that signal processing circuit 21 is provided with first input end 211, the second input terminal 212, third
Enter end 213 and output end 214.
Signal processing circuit 21, is used for:
First time domain signal is received by first input end 211, the second time-domain letter is received by the second input terminal 212
Number, voltage analog signal is received by third input terminal 213.
Processing is carried out to first time domain signal and the second time-domain signal and generates the first digital signal, voltage analog is believed
It number carries out processing and generates the second digital signal.Wherein, the first digital signal is used to indicate first time domain signal and the second time
Time interval between the signal of domain.Second digital signal is used to indicate the signal strength of voltage analog signal.
The first digital signal and the second digital signal are exported by 214 timesharing of output end.
TDC_ADC multiplexing technology provided in this embodiment, in structure, there are three input terminal and an output ends for tool.Its
In, two input terminals are used for input time domain signal.Specifically, first input end 211 is used to input first time domain signal, the
Two input terminals 212 are for inputting the second time-domain signal.Another input terminal is used for input voltage domain signal.Specifically, third
Input terminal 213 is used for input voltage analog signal.Wherein, only by 214 timesharing of an output end output to time-domain signal
Quantized result (the first digital signal) and quantized result (the second digital signal) to voltage domain signal, save hardware resource.
TDC_ADC multiplexing technology provided in this embodiment, working principle are as follows:
Processing for time-domain signal, specifically, 21 pairs of first time domain signals of signal processing circuit and the second time
Domain signal carries out processing and generates the first digital signal, and the first digital signal is used to indicate first time domain signal and the second time-domain
Time interval between signal realizes the quantization of time-domain signal.It should be noted that the present embodiment is for realizing time-domain
The implementation of signal quantization without limitation, can use existing method.For example, by comparing first time domain signal and the
The rising edge or failing edge of two time-domain signals generate the first digital signal.
Processing for voltage domain signal, specifically, signal processing circuit 21 carries out processing generation to voltage analog signal
Second digital signal.Second digital signal is used to indicate the signal strength of voltage analog signal, realizes the amount of voltage domain signal
Change.
As it can be seen that TDC_ADC multiplexing technology provided in this embodiment, input time domain signal and voltage domain can believe simultaneously
Number, deadline domain signal and voltage domain signal while, quantifies, and reduces circuit area and power consumption, reduces hardware resource
Consumption, extends the application scenarios of analog-digital converter.Moreover, only by an output end timesharing output to time-domain signal and electricity
The quantized result for pressing domain signal, further saves hardware resource.
It should be noted that the present embodiment for analog-digital converter form without limitation.For example, analog-digital converter can be with
It is independent component.It can also be chip.
It should be noted that the present embodiment is for first input end 211, the second input terminal 212,213 and of third input terminal
The form of output end 214 can be the form that electrical connection arbitrarily may be implemented without limitation.For example, can be pin, wiring point
Etc..
Optionally, TDC_ADC multiplexing technology provided in this embodiment can also include comparator (not shown), comparator
Output end be electrically connected with the second input terminal 212.
Comparator is used for:
Processing is carried out to the analog signal that the input terminal by comparator inputs and generates the second time-domain signal, and passes through ratio
Output end compared with device exports the second time-domain signal to the second input terminal 212.
Specifically, analog-digital converter can input two-way analog signal.It is raw after analog signal is handled by comparator all the way
At the second time-domain signal, it is input to the second input terminal 212 of signal processing circuit 21.The inputted with first input end 211
One time-domain signal for realizing time-domain signal quantization.Another way analog signal is voltage analog signal, is input to signal
The third input terminal 213 of processing circuit 21, realizes the quantization of voltage domain signal.
It should be noted that the present embodiment for comparator implementation without limitation.
The present embodiment provides a kind of TDC_ADC multiplexing technology, including signal processing circuit, signal processing circuit is provided with
One input terminal, the second input terminal, third input terminal, the first output end and second output terminal.TDC_ADC provided in this embodiment is multiple
With technology, can input time domain signal and voltage domain signal simultaneously, deadline domain signal and voltage domain signal while measures
Change, reduces the consumption of hardware resource, reduce area and power consumption.
Fig. 3 is the structural schematic diagram of TDC_ADC multiplexing technology provided by Embodiment 2 of the present invention.It should be noted that this
The TDC_ADC multiplexing technology that embodiment provides, can be analog-digital converter.The present embodiment on the basis of the above embodiment 1,
Another implementation of analog-digital converter is provided, the specific implementation of signal processing circuit is mainly provided.Such as Fig. 3 institute
Show, TDC_ADC multiplexing technology provided in this embodiment, including signal processing circuit 21, signal processing circuit 21 are provided with first
Input terminal 211, the second input terminal 212, third input terminal 213 and output end 214.
Wherein, signal processing circuit 21 includes: voltage time converter (Voltage-to-Time Converter, VTC)
22 and time-to-digit converter (TDC) 23.
Voltage time converter 22 is provided with third input terminal 213, the 4th output end 216 and the 5th output end 217, time
Digital quantizer 23 is provided with the 4th input terminal 218, the 5th input terminal 219, first input end 211, the second input terminal 212 and defeated
Outlet 214.Wherein, the 4th output end 216 is electrically connected with the 4th input terminal 218, the 5th output end 217 and the 5th input terminal 219
Electrical connection.
Voltage time converter 22, is used for:
Voltage analog signal is received by third input terminal 213.
The 4th time-domain signal and the 5th time-domain signal are generated according to the signal strength of voltage analog signal, and pass through the
Four output ends 216 export the 4th time-domain signal to the 4th input terminal 218, by the 5th output end 217 by the 5th time-domain
Signal is exported to the 5th input terminal 219.
Time-to-digit converter 23, is used for:
First time domain signal is received by first input end 211, the second time-domain letter is received by the second input terminal 212
Number, the 4th time-domain signal is received by the 4th input terminal 218, the 5th time-domain signal is received by the 5th input terminal 219.
Processing is carried out to first time domain signal and the second time-domain signal and generates the first digital signal, to the 4th time-domain
Signal and the 5th time-domain signal carry out processing and generate the second digital signal.
The first digital signal and the second digital signal are exported by 214 timesharing of output end.
TDC_ADC multiplexing technology provided in this embodiment, in structure, signal processing circuit 21 includes: that voltage time turns
Parallel operation 22 and time-to-digit converter 23.Wherein, voltage time converter 22 has an input terminal and two output ends, respectively
Are as follows: third input terminal 213, the 4th output end 216 and the 5th output end 217.There are four input terminals for the tool of time-to-digit converter 23
With an output end, respectively the 4th input terminal 218, the 5th input terminal 219, first input end 211,212 and of the second input terminal
Output end 214.
TDC_ADC multiplexing technology provided in this embodiment, working principle are as follows:
Processing for time-domain signal, specifically, when 23 pairs of first time domain signals of time-to-digit converter and second
Between domain signal carry out processing and generate the first digital signal, the first digital signal is used to indicate first time domain signal and the second time
Time interval between the signal of domain realizes the quantization of time-domain signal.
Processing for voltage domain signal, firstly, signal strength of the voltage time converter 22 according to voltage analog signal
Generate the 4th time-domain signal and the 5th time-domain signal.The present embodiment is for being converted to time-domain signal for voltage domain signal
Mode without limitation, can use existing method.For example, the 4th time-domain signal and the 5th time-domain signal can be passed through
The signal strength of time interval instructed voltage analog signal between rising edge or failing edge.Then, time-to-digit converter
23 pair of the 4th time-domain signal and the 5th time-domain signal carry out processing and generate the second digital signal, realize voltage domain signal
Quantization.It should be noted that processing of the present embodiment for first time domain signal and the second time-domain signal, when with to the 4th
Between domain signal and the 5th time-domain signal processing principle it is similar.
It should be noted that the present embodiment is for the 4th input terminal 218, the 5th input terminal 219, the 4th output end 216,
The form of five output ends 217 can be the form that electrical connection arbitrarily may be implemented without limitation.For example, can be pin, wiring
Point etc..
The present embodiment provides a kind of TDC_ADC multiplexing technologies, wherein signal processing circuit specifically includes voltage time conversion
Device and time-to-digit converter.Can input time domain signal and voltage domain signal simultaneously, deadline domain signal and voltage domain
Quantify while signal, reduce circuit area and power consumption, the consumption for reducing hardware resource extends answering for analog-digital converter
Use scene.
Fig. 4 is the structural schematic diagram for the TDC_ADC multiplexing technology that the embodiment of the present invention one provides.It should be noted that this
The TDC_ADC multiplexing technology that embodiment provides, can be laser radar.As shown in figure 4, TDC_ADC provided in this embodiment is multiple
With technology, may include:
Trigger 11, optical transmitting set 12, photoelectric converter 13, the first amplifier 141, the second amplifier 142, comparator 15
With analog-digital converter 100.Analog-digital converter 100 includes signal processing circuit (not shown), and signal processing circuit is provided with first
Input terminal 211, the second input terminal 212, third input terminal 213 and output end 214.
The output end of trigger 11 is electrically connected with the input terminal of optical transmitting set 12 and first input end 211 respectively.
Two output ends of photoelectric converter 13 respectively with the input terminal of the first amplifier 141 and the second amplifier 142
Input terminal electrical connection, the output end of the first amplifier 141 is electrically connected with the input terminal of comparator 15, the output end of comparator 15 and
The electrical connection of second input terminal 212.The output end of second amplifier 142 is electrically connected with third input terminal 213.
Trigger 11 exports first time domain to first input end 211 and believes for exporting trigger signal to optical transmitting set 12
Number.
Optical transmitting set 12, for emitting optical signal according to trigger signal.
Reflected light signal is converted to electric signal, and electric signal is divided for receiving reflected light signal by photoelectric converter 13
It Shu Chu not be to the first amplifier 141 and the second amplifier 142.
First amplifier 141, for according to electric signal generate the second analog signal, and by the second analog signal output to than
Compared with device 15.
Comparator 15, for generating the second time-domain signal according to the second analog signal, and the second time-domain signal is defeated
Out to the second input terminal 212.
Second amplifier 142 for generating voltage analog signal according to electric signal, and voltage analog signal is exported to the
Three input terminals 213.
Signal processing circuit is used for:
First time domain signal is received by first input end 211, the second time-domain letter is received by the second input terminal 212
Number, voltage analog signal is received by third input terminal 213.
Processing is carried out to first time domain signal and the second time-domain signal and generates the first digital signal, voltage analog is believed
It number carries out processing and generates the second digital signal.Wherein, the first digital signal is used to indicate first time domain signal and the second time
Time interval between the signal of domain.Second digital signal is used to indicate the signal strength of voltage analog signal.
The first digital signal and the second digital signal are exported by 214 timesharing of output end.
TDC_ADC multiplexing technology provided in this embodiment, working principle are as follows:
After trigger 11 generates trigger signal, first time domain signal can be generated and (be properly termed as Start1Signal).The
One time-domain signal is exported to the first input end 211 of analog-digital converter 100.At this point, optical transmitting set 12 emits light pulse signal.
Light pulse signal is received after target reflects by laser radar.Photoelectric conversion, which is carried out, by photoelectric converter 13 exports two-way electricity
Signal.Wherein, electric signal is exported to the first amplifier 141 all the way, raw after the processing of the first amplifier 141 and comparator 15
(Stop is properly termed as at the second time-domain signal corresponding with first time domain signal1Signal).100 (signal of analog-digital converter
Processing circuit) processing the first digital signal of generation, the first number letter are carried out to first time domain signal and the second time-domain signal
The time interval number being used to indicate between first time domain signal and the second time-domain signal, realizes the amount of time-domain signal
Change.In turn, the calculating that target range can be carried out according to the first digital signal, realizes the distance measurement function of laser radar.Wherein, separately
Electric signal is exported to the second amplifier 142 all the way, generates voltage analog signal after the processing of the second amplifier 142.Modulus
Converter 100 (signal processing circuit) carries out processing to voltage analog signal and generates the second digital signal.Second digital signal is used
In the signal strength of instructed voltage analog signal, the quantization of voltage domain signal is realized.And then it can be according to the second digital signal
The calculating for carrying out signal strength, obtains the strength information of echo-signal.
As it can be seen that TDC_ADC multiplexing technology provided in this embodiment, within a trigger signal period, analog-digital converter can
With input time domain signal and voltage domain signal simultaneously, it is synchronous with target range information that strength information may be implemented in laser radar
Quantization handles the intensity and target range information of echo-signal according to application demand, reaches short distance high-resolution and remote strong
The target requirement of anti-interference ability.Moreover, chip area and power consumption are reduced by analog-digital converter, so that laser radar power consumption
Lower, system stability is more preferable.
It should be noted that the present embodiment is for trigger 11, optical transmitting set 12, photoelectric converter 13, the first amplifier
141, the implementation of the second amplifier 142 and comparator 15 is without limitation
Optionally, photoelectric converter 13 includes avalanche photodide (Avalanche Photo Diode, APD).
Optionally, the first amplifier 141 and the second amplifier 142 can be trans-impedance amplifier (trans-impedance
Amplifier, TIA).
The present embodiment provides a kind of TDC_ADC multiplexing technologies, and it is synchronous with target range information that strength information may be implemented
Quantization, reduces chip area and power consumption, so that laser radar power consumption is lower, system stability is more preferable.
Fig. 5 is the structural schematic diagram of TDC_ADC multiplexing technology provided by Embodiment 2 of the present invention.It should be noted that this
The TDC_ADC multiplexing technology that embodiment provides, can be analog-digital converter.Base of the present embodiment in above-mentioned embodiment illustrated in fig. 4
On plinth, another implementation of laser radar is provided, the specific implementation of analog-digital converter 100 is mainly provided.Such as
Shown in Fig. 5, in the present embodiment, signal processing circuit includes: voltage time converter 22 and time-to-digit converter 23.
Voltage time converter 22 is provided with third input terminal, the 4th output end and the 5th output end, time-to-digital converter
Device 23 is provided with the 4th input terminal, the 5th input terminal, first input end, the second input terminal and output end.Wherein, the 4th output end
It is electrically connected with the 4th input terminal, the 5th output end is electrically connected with the 5th input terminal.
Voltage time converter 22, is used for:
Voltage analog signal is received by third input terminal.
The 4th time-domain signal and the 5th time-domain signal are generated according to the signal strength of voltage analog signal, and pass through the
Four output ends export the 4th time-domain signal to the 4th input terminal, by the 5th output end by the 5th time-domain signal export to
5th input terminal.
Time-to-digit converter 23, is used for:
First time domain signal is received by first input end, the second time-domain signal is received by the second input terminal, is led to
It crosses the 4th input terminal and receives the 4th time-domain signal, the 5th time-domain signal is received by the 5th input terminal.
Processing is carried out to first time domain signal and the second time-domain signal and generates the first digital signal, to the 4th time-domain
Signal and the 5th time-domain signal carry out processing and generate the second digital signal.
The first digital signal and the second digital signal are exported by output end timesharing.
In the present embodiment, after voltage time converter 22 obtains voltage analog signal, according to the letter of voltage analog signal
Number intensity generates the 4th time-domain signal and (is properly termed as Start2Signal) and the 5th time-domain signal (be properly termed as Stop2Letter
Number).Time-to-digit converter 23 carries out processing to the 4th time-domain signal and the 5th time-domain signal and generates the second digital signal,
Realize the quantization of voltage domain signal.
TDC_ADC multiplexing technology provided in this embodiment, including analog-digital converter and above-mentioned embodiment illustrated in fig. 3 phase
Seemingly, technical principle is similar with technical effect, and details are not described herein again.
The embodiment of the present invention also provides a kind of electronic equipment, including any implementation of Fig. 2-embodiment illustrated in fig. 3 mentions
The analog-digital converter of confession.
Electronic equipment provided in this embodiment, including analog-digital converter it is similar to above-mentioned Fig. 2-embodiment illustrated in fig. 3,
Technical principle is similar with technical effect, and details are not described herein again.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the embodiment of the present invention, rather than to it
Limitation；Although the embodiment of the present invention is described in detail referring to foregoing embodiments, those skilled in the art
It is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, either to part of or
All technical features are equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution this hair
The range of bright embodiment technical solution.
Claims (7)
1. a kind of time-to-digit converter TDC_ analog-digital converter ADC multiplexing technology characterized by comprising
Signal processing circuit, the signal processing circuit are provided with first input end, the second input terminal, third input terminal and output
End；
The signal processing circuit, is used for:
First time domain signal is received by the first input end, the second time-domain letter is received by second input terminal
Number, voltage analog signal is received by the third input terminal；
Processing is carried out to first time domain signal and second time-domain signal and generates the first digital signal, to the electricity
Pressure analog signal carries out processing and generates the second digital signal；Wherein, first digital signal is used to indicate the first time
Time interval between domain signal and second time-domain signal；Second digital signal is used to indicate the voltage analog
The signal strength of signal；
First digital signal and second digital signal are exported by the output end timesharing.
2. TDC_ADC multiplexing technology according to claim 1, which is characterized in that the signal processing circuit includes: voltage
Time converter and time-to-digit converter；
The voltage time converter is provided with the third input terminal, the 4th output end and the 5th output end, the time number
Word converter is provided with the 4th input terminal, the 5th input terminal, the first input end, second input terminal and the output
End；Wherein, the 4th output end is electrically connected with the 4th input terminal, the 5th output end and the 5th input terminal electricity
Connection；
The voltage time converter, is used for:
The voltage analog signal is received by the third input terminal；
The 4th time-domain signal and the 5th time-domain signal are generated according to the signal strength of the voltage analog signal, and passes through institute
The 4th output end is stated to export the 4th time-domain signal to the 4th input terminal, it will be described by the 5th output end
5th time-domain signal is exported to the 5th input terminal；
The time-to-digit converter, is used for:
First time domain signal is received by the first input end, when receiving described second by second input terminal
Between domain signal, the 4th time-domain signal is received by the 4th input terminal, received by the 5th input terminal described in
5th time-domain signal；
Processing is carried out to first time domain signal and second time-domain signal and generates first digital signal, to institute
It states the 4th time-domain signal and the 5th time-domain signal carries out processing and generates second digital signal；
First digital signal and second digital signal are exported by the output end timesharing.
3. TDC_ADC multiplexing technology according to claim 1 or 2, which is characterized in that it further include comparator, the comparison
The output end of device is electrically connected with second input terminal；
The comparator is used for:
Processing is carried out to the analog signal that the input terminal by the comparator inputs and generates second time-domain signal, and is led to
The output end for crossing the comparator exports second time-domain signal to second input terminal.
4. a kind of time-to-digit converter TDC_ analog-digital converter ADC multiplexing technology characterized by comprising
Trigger, optical transmitting set, photoelectric converter, the first amplifier, the second amplifier, comparator and analog-digital converter；It is described
Analog-digital converter includes signal processing circuit, and it is defeated that the signal processing circuit is provided with first input end, the second input terminal, third
Enter end and output end；
The output end of the trigger is electrically connected with the input terminal of the optical transmitting set and the first input end respectively；
Two output ends of the photoelectric converter respectively with the input terminal of first amplifier and second amplifier
Input terminal electrical connection, the output end of first amplifier is electrically connected with the input terminal of the comparator, the comparator it is defeated
Outlet is electrically connected with second input terminal；The output end of second amplifier is electrically connected with the third input terminal；
The trigger exports first time domain to the first input end for exporting trigger signal to the optical transmitting set
Signal；
The optical transmitting set, for emitting optical signal according to the trigger signal；
The reflected light signal is converted to electric signal for receiving reflected light signal by the photoelectric converter, and by the electricity
Signal is exported respectively to first amplifier and second amplifier；
First amplifier, for generating the second analog signal according to the electric signal, and second analog signal is defeated
Out to the comparator；
The comparator, for generating the second time-domain signal according to second analog signal, and by second time-domain
Signal is exported to second input terminal；
Second amplifier, for generating voltage analog signal according to the electric signal, and the voltage analog signal is defeated
Out to the third input terminal；
The signal processing circuit, is used for:
First time domain signal is received by the first input end, when receiving described second by second input terminal
Between domain signal, pass through the third input terminal and receive the voltage analog signal；
Processing is carried out to first time domain signal and second time-domain signal and generates the first digital signal, to the electricity
Pressure analog signal carries out processing and generates the second digital signal；Wherein, first digital signal is used to indicate the first time
Time interval between domain signal and second time-domain signal；Second digital signal is used to indicate the voltage analog
The signal strength of signal；
First digital signal and second digital signal are exported by the output end timesharing.
5. TDC_ADC multiplexing technology according to claim 4, which is characterized in that the signal processing circuit includes: voltage
Time converter and time-to-digit converter；
The voltage time converter is provided with the third input terminal, the 4th output end and the 5th output end, the time number
Word converter is provided with the 4th input terminal, the 5th input terminal, the first input end, second input terminal and the output
End；Wherein, the 4th output end is electrically connected with the 4th input terminal, the 5th output end and the 5th input terminal electricity
Connection；
The voltage time converter, is used for:
The voltage analog signal is received by the third input terminal；
The 4th time-domain signal and the 5th time-domain signal are generated according to the signal strength of the voltage analog signal, and passes through institute
The 4th output end is stated to export the 4th time-domain signal to the 4th input terminal, it will be described by the 5th output end
5th time-domain signal is exported to the 5th input terminal；
The time-to-digit converter, is used for:
First time domain signal is received by the first input end, when receiving described second by second input terminal
Between domain signal, the 4th time-domain signal is received by the 4th input terminal, received by the 5th input terminal described in
5th time-domain signal；
Processing is carried out to first time domain signal and second time-domain signal and generates first digital signal, to institute
It states the 4th time-domain signal and the 5th time-domain signal carries out processing and generates second digital signal；
First digital signal and second digital signal are exported by the output end timesharing.
6. TDC_ADC multiplexing technology according to claim 4 or 5, which is characterized in that the photoelectric converter includes snowslide
Photodiode APD.
7. TDC_ADC multiplexing technology according to claim 4 or 5, which is characterized in that first amplifier and described
Two amplifiers are trans-impedance amplifier.
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