CN207623731U - A kind of control device of multichannel photoelectric conversion module - Google Patents
A kind of control device of multichannel photoelectric conversion module Download PDFInfo
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Abstract
本实用新型提供了一种多路光电转换模块的控制装置，包括：处理器和驱动器；处理器，用于输出脉冲供电信号；驱动器，用于接收脉冲供电信号并输出控制光电转换模块工作状态的驱动信号；处理器上的N个输出端分别与N个驱动器的N个输入端一一对应连接；N个驱动器的N个输出端分别与N路光电转换模块的N路电源端一一对应连接。本实用新型通过时序上的脉冲供电方式，能够确保同一时刻只有一路光电转换模块处于工作状态，并将多路分时信号复用至相同输出总线，从而实现了对多路信号的分时复用，有效提高了的频带利用率和电信号传递速度、降低了延迟，并且不需要在光电转换模块后端加入多路选通器，从而有效降低了体积。
The utility model provides a control device for a multi-channel photoelectric conversion module, comprising: a processor and a driver; the processor is used to output a pulse power supply signal; the driver is used to receive a pulse power supply signal and output a signal for controlling the working state of the photoelectric conversion module Drive signal; N output terminals on the processor are respectively connected to N input terminals of N drivers in one-to-one correspondence; N output terminals of N drivers are respectively connected to N power supply terminals of N photoelectric conversion modules in one-to-one correspondence . The utility model can ensure that only one photoelectric conversion module is in the working state at the same time through the pulse power supply mode on the time sequence, and multiplexes multiple time-sharing signals to the same output bus, thereby realizing the time-division multiplexing of multiple signals , which effectively improves the frequency band utilization and electrical signal transmission speed, reduces the delay, and does not need to add a multiplexer at the back end of the photoelectric conversion module, thereby effectively reducing the volume.
Description
Technical field
The utility model is related to laser radar technique fields, and in particular to a kind of control dress of multichannel photoelectric conversion module
It sets.
Background technology
Laser radar is received the echo optical signal of laser and is handled and obtained with realizing by laser transmitter projects laser
Take the parameter information of target.Multi-line laser radar is one kind of laser radar, and bigger field angle may be implemented in multi-line laser radar
Scanning, to realize three-dimensional ranging.Therefore multi-line laser radar needs to build the photoelectric conversion module of multichannel, is received with realizing
The echo optical signal of bigger field angle.
In the prior art, the multichannel photoelectric conversion module of multi-line laser radar is respectively adopted individual physics and is electrically connected to
Multi-channel gating device, and after gating signal is sent after to level processor, so as to achieve the purpose that multiplexing.But
Using above-mentioned connection type, the power consumption of multi-line laser radar is improved, reduces the band efficiency of multi-line laser radar, and
And individually physics electric connection causes the volume of multi-line laser radar larger.
Utility model content
For the defects in the prior art, the utility model provides a kind of control device of multichannel photoelectric conversion module, leads to
It crosses and transmits different signals in different periods, realize the purpose of the multiple-channel output of multi-line laser radar.
To achieve the above object, the utility model provides following technical scheme：
The utility model provides a kind of control device of multichannel photoelectric conversion module, including：Processor and driver；
The processor, for exporting pulse power supply signal；
The driver for receiving pulse power supply signal, and exports the driving of control photoelectric conversion module working condition
Signal；
N number of input terminal of N number of output end respectively with N number of driver on the processor connects one to one；It is N number of
N number of output end of the driver connects one to one with the roads the N power end of the roads N photoelectric conversion module respectively.
Further, the processor is fpga chip, and the driver is multichannel phase inverter；
M input terminal on each described multichannel phase inverter respectively with M I/O pin on the fpga chip one by one
It is correspondingly connected with, M power end of the M output end respectively with the roads M photoelectric conversion module connects one to one.
Further, per photoelectric conversion module all the way, including：
Preamplifying circuit, for optical signal to be converted to electric signal；
Secondary amplification circuit, for being amplified to electric signal；
The output end of the preamplifying circuit is connected with the input terminal of the secondary amplification circuit.
Further, the output end of the multichannel phase inverter is connected with the power end of the preamplifying circuit；It is described
The power end of secondary amplification circuit connects DC power supply.Optionally, the output end of the multichannel phase inverter and the secondary amplification
The power end of circuit is connected；The power end of the preamplifying circuit connects DC power supply.
As shown from the above technical solution, the control dress of a kind of multichannel photoelectric conversion module described in the utility model embodiment
It sets, it can be ensured that only photoelectric conversion module is in running order all the way for synchronization, and the timesharing realized to output bus is multiple
With to effectively reduce the power consumption of multi-line laser radar, the band efficiency effectively increased.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural representation of the control device for multichannel photoelectric conversion module that the utility model embodiment provides
Figure；
Fig. 2 be the utility model embodiment provide a kind of multichannel photoelectric conversion module control device in time-sharing multiplex
Sequence diagram；
Fig. 3 be the utility model embodiment provide a kind of multichannel photoelectric conversion module control device in pulse power supply connect
Connect the schematic diagram of preamplifying circuit；
Fig. 4 be the utility model embodiment provide a kind of multichannel photoelectric conversion module control device in pulse power supply connect
Connect the schematic diagram of secondary amplification circuit.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment carries out clear, complete description, it is clear that retouched to the technical scheme in the embodiment of the utility model
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
The utility model embodiment provides a kind of control device of multichannel photoelectric conversion module, referring to Fig. 1, control dress
Set including：Processor 10 and driver 20；
The processor 10, for exporting pulse power supply signal；
The driver 20 for receiving pulse power supply signal, and exports the drive of control photoelectric conversion module working condition
Dynamic signal；
N number of output end on the processor 10 is corresponded with N number of input terminal of N number of driver 20 respectively to be connected
It connects；N number of output end of N number of driver 20 connects one to one with the roads the N power end of the roads N photoelectric conversion module respectively.
In specific application, processor 10 is fpga chip, and driver 20 is multichannel phase inverter；
M input terminal on each described multichannel phase inverter respectively with M I/O pin on the fpga chip one by one
It is correspondingly connected with, M power end of the M output end respectively with the roads M photoelectric conversion module connects one to one.Per opto-electronic conversion all the way
The feeder ear of module is connected with the output end all the way on a multichannel phase inverter；Wherein, M output of a multichannel reverser
End is connected with the feeder ear of the roads M photoelectric conversion module respectively, and multichannel photoelectric conversion module corresponds to multiple multichannel reversers.It is multiple
M input terminal of each phase inverter is connected with M I/O interface on fpga chip in multichannel phase inverter.Referring to Fig. 2,
Fpga chip controls the output that multiple multichannel reversers generate, and the output signal of multiple multichannel phase inverters is for controlling multichannel photoelectricity
The feeder ear of conversion module makes multiple electric signals that multichannel photoelectric conversion module exports realize the purpose of timesharing output.Multichannel light
The output end of electric conversion module is linked by line and direct-connected mode on same output bus.Ensured in sequential with for the moment
Only there is signal output at quarter all the way.It is achieved in the time-sharing multiplex of multiple signals.
It, on the one hand can be by FPGA by the way of fpga chip control multichannel phase inverter timesharing output pulse power supply signal
Chip is isolated with late-class circuit, is played a protective role, and still further aspect can also avoid fpga chip itself fan-out capability inadequate
The case where.For fpga chip as processor, controllable I/O pins are more, can be connected with the input terminal of multiple multichannel reversers
It connects, the output level of multiple multichannel phase inverters is controlled by fpga chip, realize the timing control to multichannel photoelectric conversion module.
The phasing back 180 degree for the signal that multichannel reverser exports the I/O interfaces of fpga chip, output with same duty cycle, etc.
The pulse signal of phase intervals, and the pulse signal transmission after reversion to coupled photoelectric conversion module is realized to not
The driving of opto-electronic conversion of going the same way module.
In above-described embodiment, per photoelectric conversion module all the way, including：
Preamplifying circuit, for optical signal to be converted to electric signal；
Secondary amplification circuit, for being amplified to electric signal；
The output end of the preamplifying circuit is connected with the input terminal of the secondary amplification circuit.
According to the particular circuit configurations of photoelectric conversion module, corresponding different control mode is chosen, it is a kind of referring to Fig. 3
Control mode is：
The power supply of preamplifying circuit described in multichannel is by the way of pulse power supply, the electricity of secondary amplification circuit described in multichannel
Source is by the way of direct current supply.Wherein, secondary amplification circuit described in the multichannel by the way of direct current supply is in work always
Make state.
Pulse power supply signal is powered the preamplifying circuit of the first via, and pulse high level makes preamplifying circuit
Feeder ear is then in high level, then preamplifying circuit works normally.Preamplifying circuit converts optical signal, output
Electric signal be transmitted to output bus after secondary amplification circuit is amplified.At the same time, the preamplifying circuit on other each roads
Feeder ear be then in low level, so that the preamplifying circuit on other each roads is in off working state, thus no signal is transmitted to
Bus.The preamplifying circuit on subsequent the second tunnel of pulse signal pair is powered, while the first via and the prime on other each roads are put
The feeder ear of big circuit is in low level, is in off working state, is achieved in the transmission of the electric signal on the second tunnel.With such
Push away, realize multichannel photoelectric conversion module timesharing output signal, each road signal physically line and by way of complete to be multiplexed.This
Kind based on pulse power supply and line and operating mode, time signal is multiplexed to same output bus, to effectively increase
Band efficiency.
Referring to Fig. 4, another control mode is：
The power supply of preamplifying circuit described in multichannel is by the way of direct current supply, the electricity of secondary amplification circuit described in multichannel
Source is by the way of pulse power supply.Wherein, preamplifying circuit described in the multichannel by the way of direct current supply is in work always
Make state.
Pulse power supply signal is powered the secondary amplification circuit of the first via, and pulse high level makes secondary amplification circuit
Feeder ear is then in high level, then secondary amplification circuit works normally.The electricity that secondary amplification circuit exports preamplifying circuit
Signal is transmitted to output bus after being amplified.At the same time, the feeder ear of the secondary amplification circuit on other each roads is then in low
Level makes the secondary amplification circuit on other roads be in off working state, thus no signal is transmitted to bus.Subsequent pulse signal pair
The secondary amplification circuit on the second tunnel is powered, while the feeder ear of the first via and the secondary amplification circuit on other each roads is in low
Level is in off working state, is achieved in the transmission of the electric signal on the second tunnel.And so on, complete time-sharing multiplex.This base
In pulse power supply and line and operating mode, time signal is multiplexed to same output bus, to effectively increase frequency band
Utilization rate.
As shown from the above technical solution, the control device of a kind of multichannel photoelectric conversion module described in the utility model, can
Ensuring synchronization, only photoelectric conversion module is in running order all the way, to effectively reduce Overall Power Consumption, realizes multichannel
The time-sharing multiplex of signal, therefore the band efficiency effectively increased；Using line and connection type, thus its signal transmit speed
Degree is fast, and system delay is low；Using line and connection type, because without opto-electronic conversion module rear end be added multi channel selecting
Device, to be effectively saved resource.
The utility model embodiment provides a kind of multi-line laser radar, including：Multichannel photoelectric conversion module, Laser emission mould
The control device of multichannel photoelectric conversion module in block, output bus module, main control module and above-described embodiment；Wherein, multiple
Photoelectric conversion module channeling photoelectric conversion module.
The laser emitting module, for emitting laser pulse signal to object under test.
The photoelectric conversion module, input terminal receive the laser echo signal of object under test reflection, output end and output
Bus module is connected, and feeder ear is connected with the control device of multichannel photoelectric conversion module, for receiving returning for object under test reflection
Wave signal, and the echo-signal of reception is converted into electric signal output.
The multichannel photoelectric conversion module, is multiple identical photoelectric conversion modules, and input terminal is multichannel exterior light
Signal, multi-channel output are connected to identical output bus, and multiple-way supply end is defeated with multiplex pulse power supply signal generation module
Outlet connects one to one.Echo-signal for receiving the reflection of multichannel object under test, and above-mentioned echo-signal is converted into electricity
Signal is sent into output bus.
The control device of the multichannel photoelectric conversion module, the feeder ear of multi-channel output and multichannel photoelectric conversion module
It connects one to one, the pulse power supply signal for generating multichannel photoelectric conversion module.
The output bus module, input terminal are connected with the output end of multichannel photoelectric conversion module, output end and master control
Module is connected, and the multiple signals for exporting multichannel photoelectric conversion module are coupled to a transmission lines and export to master control mould
Block.
The multichannel photoelectric conversion module and output bus module using line with it is direct-connected by the way of connect.
The main control module, input terminal are connected with output bus, and output end is the range information of object under test, for calculating
And the electric signal of multichannel photoelectric conversion module output is handled, and obtain the range information of physics to be measured.
The control principle of the utility model：
Photoelectric conversion module for external optical signal to be converted to electric signal and exports the electric signal to signal processing end, when
When having n photoelectric conversion module, n feeder ear of n photoelectric conversion module is controlled by using the mode of pulse power supply, is reached
Control whether n photoelectric conversion module be in running order, so that n electric signal of n photoelectric conversion module output is divided
When transmit；Wherein, if the feeder ear of a photoelectric conversion module is high level, the feeder ear of n-1 photoelectric conversion module is
Low level.The photoelectric conversion module that feeder ear is in high level state is in running order, can carry out the electric signal of conversion
Output；Feeder ear is in low level photoelectric conversion module and is in off working state, can not export electric signal.Control n photoelectricity
The feeder ear of conversion module, it is high level to make the feeder ear of n photoelectric conversion module in turn, then realizes n photoelectric conversion module
Timesharing output.
Using line and connection type to couple the n electric signal that n photoelectric conversion module exports to the same output total
In line, the output of n photoelectric conversion module is controlled according in step S101, so that the n of n photoelectric conversion module output
The purpose of a electric signal time-sharing multiplex output bus.Output bus couples n electric signal to signal processing end.
As can be seen from the above description, the utility model can ensure that only photoelectric conversion module is in work to synchronization all the way
State realizes the time-sharing multiplex to bus, and to effectively reduce the power consumption of multi-line laser radar, the frequency band effectively increased is sharp
With rate；Using line and connection type, improve electric signal transmission speed, reduce delay, and need not be in opto-electronic conversion
Multi-channel gating device is added in module rear end, to effectively reduce the volume of multi-line laser radar.
In the specification of the utility model, numerous specific details are set forth.Although it is understood that the utility model
Embodiment can be put into practice without these specific details.In some instances, be not been shown in detail well known method,
Structure and technology, so as not to obscure the understanding of this description.Similarly, it should be understood that disclosed to simplify the utility model
And it helps to understand one or more of each utility model aspect, the retouching to the exemplary embodiment of the utility model above
In stating, each feature of the utility model is grouped together into sometimes in single embodiment, figure or descriptions thereof.However,
The method of the disclosure should not be explained and be intended in reflection is following：The requires of the utility model ratio i.e. claimed is in each power
The more features of feature that profit is expressly recited in requiring.More precisely, as the following claims reflect, it is practical new
It is all features less than single embodiment disclosed above in terms of type.Therefore, it then follows the claim of specific implementation mode
Thus book is expressly incorporated in the specific implementation mode, wherein independent implementation of each claim as the utility model itself
Example.It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can be mutual group
It closes.The utility model is not limited to any single aspect, is also not limited to any single embodiment, is also not limited to this
The arbitrary combination and/or displacement of a little aspects and/or embodiment.Furthermore, it is possible to be used alone in terms of each of the utility model and/
Or embodiment or with it is one or more other aspect and/or embodiment be used in combination.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (5)
1. a kind of control device of multichannel photoelectric conversion module, which is characterized in that the control device includes：Processor and driving
Device；
The processor, for exporting pulse power supply signal；
The driver for receiving pulse power supply signal, and exports the drive signal of control photoelectric conversion module working condition；
N number of input terminal of N number of output end respectively with N number of driver on the processor connects one to one；It is N number of described
N number of output end of driver connects one to one with the roads the N power end of the roads N photoelectric conversion module respectively.
2. control device according to claim 1, which is characterized in that the processor is fpga chip, the driver
For multichannel phase inverter；
M input terminal on each described multichannel phase inverter is corresponded with M I/O pin on the fpga chip respectively
Connection, M power end of the M output end respectively with the roads M photoelectric conversion module connect one to one.
3. control device according to claim 2, which is characterized in that per photoelectric conversion module all the way, including：
Preamplifying circuit, for optical signal to be converted to electric signal；
Secondary amplification circuit, for being amplified to electric signal；
The output end of the preamplifying circuit is connected with the input terminal of the secondary amplification circuit.
4. control device according to claim 3, which is characterized in that the output end of the multichannel phase inverter and the prime
The power end of amplifying circuit is connected；The power end of the secondary amplification circuit connects DC power supply.
5. control device according to claim 3, which is characterized in that the output end of the multichannel phase inverter and the secondary
The power end of amplifying circuit is connected；The power end of the preamplifying circuit connects DC power supply.
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| CN201721686957.1U CN207623731U (en) | 2017-12-07 | 2017-12-07 | A kind of control device of multichannel photoelectric conversion module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901437A (en) * | 2017-12-07 | 2019-06-18 | 北京万集科技股份有限公司 | A control device and control method of a multi-channel photoelectric conversion module |
| CN110135549A (en) * | 2019-06-03 | 2019-08-16 | 深圳市灵明光子科技有限公司 | Photoelectric sensing chip |
| CN111164457A (en) * | 2018-09-07 | 2020-05-15 | 深圳市大疆创新科技有限公司 | Laser ranging module, device and method and mobile platform |
-
2017
- 2017-12-07 CN CN201721686957.1U patent/CN207623731U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901437A (en) * | 2017-12-07 | 2019-06-18 | 北京万集科技股份有限公司 | A control device and control method of a multi-channel photoelectric conversion module |
| CN111164457A (en) * | 2018-09-07 | 2020-05-15 | 深圳市大疆创新科技有限公司 | Laser ranging module, device and method and mobile platform |
| CN111164457B (en) * | 2018-09-07 | 2023-04-14 | 深圳市大疆创新科技有限公司 | Laser ranging module, device and method and mobile platform |
| CN110135549A (en) * | 2019-06-03 | 2019-08-16 | 深圳市灵明光子科技有限公司 | Photoelectric sensing chip |
| CN110135549B (en) * | 2019-06-03 | 2025-06-13 | 深圳市灵明光子科技有限公司 | Photoelectric sensor chip |
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