CN103472442A - Multichannel laser echo signal simulation system - Google Patents
Multichannel laser echo signal simulation system Download PDFInfo
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- CN103472442A CN103472442A CN2013104348870A CN201310434887A CN103472442A CN 103472442 A CN103472442 A CN 103472442A CN 2013104348870 A CN2013104348870 A CN 2013104348870A CN 201310434887 A CN201310434887 A CN 201310434887A CN 103472442 A CN103472442 A CN 103472442A
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Abstract
The invention provides a multichannel laser echo signal simulation system, belongs to the technical field of photoelectric detection and relates to a multichannel laser echo simulation signal achieving method. The multichannel laser echo signal simulation system is settable in channel output signal amplitude, signal rise time and inter-channel delay. The technical scheme for solving the technical problem is that voltage signals with rising indexes are produced through RC charge-discharge circuits, and then a pulse signal is obtained through capacity coupling so as to simulate a laser echo signal. An RC charge circuit power supply is a variable power source, and the output signal amplitude is changed by changing a charging voltage value. The output signal rise time is set by changing a resistance value, or a capacitance value or the resistance value and the capacitance value. The delay of output signals of channels is controlled by controlling the delay of RC charge-discharge circuit electronic control switch signals corresponding to the output signals. The multichannel laser echo signal simulation system can safely finish electronic debugging of a laser imaging system in a laboratory with low cost.
Description
Technical field
The present invention relates to technical field of photoelectric detection, be specifically related to multichannel laser echo signal imitation system.
Background technology
Laser imaging system is for doing on a surface target laser Active Imaging and range observation, produces angle-angle containing target and background-apart from image and target strength image.Than the imaging and passive imaging mode, laser 3D imaging anti-electromagnetic interference capability and anti-stealthy ability are strong, can identify Stealthy Target; There is higher distance, angle, velocity resolution; Security is higher.According to using type photodetector, laser imaging system can be divided into single-point detector laser imaging system and planar array detector laser imaging system.Single-point detector laser imaging system obtains the three-dimensional information of target area by scanning, efficiency is lower, but it is simple in structure; Comparatively speaking, planar array detector laser imaging system efficiency is higher, by selecting suitable planar array detector, and three-dimensional information that can disposable acquisition target area, but its complex structure.
Laser imaging system operating distance and laser output power are closely bound up: operating distance is far away, requires laser output power larger.Laser output power is larger, and to human body, especially eye injury is larger.Therefore, when experiment, the experimenter need to wear the cuticula mirror usually.In the laser imaging system electronics debug phase, if electronic system is direct and laser instrument carries out uniting and adjustment, the possibility human body damaged can increase.Common way is that the input signal in laboratory employing specialized equipment simulated laser echoed signal as electronic system, when guaranteeing electronics commissioning staff personal safety, can make each subsystem synchronously carry out, and shortens the equipment R&D cycle.
Before the present invention, usually adopt arbitrarily signal generating device, by programming, signal output waveform is set, with the simulated laser echoed signal.On market, have the arbitrarily signal generating device of Multiple Type available, and its performance index are higher, but its price is very high, has increased undoubtedly the laser imaging system R&D costs.Current alternative arbitrarily signal generating device mostly is two passages or four-way, can meet single-point detector laser imaging system electronics commissioning requirements.For the debugging of planar array detector laser imaging system electronic system, a kind of method is that the planar array detector hyperchannel is debugged several times, debugs two passages or four-way at every turn, and the method has increased the system debug cycle; Another kind method is the port number according to planar array detector, buys many arbitrarily signal generating device series connection and uses, and in view of the price of separate unit arbitrarily signal generating device is very high, many series connection are used and can greatly be increased the R&D costs of laser imaging system undoubtedly.
Summary of the invention
The present invention can only be simulated for two passages or four-way for solving existing laser echo signal simulation system, adopt arbitrarily signal generating device to have the problem that cost is high, the multichannel laser echo simulation system that provides a kind of each passage output signal amplitude, signal elevating time and interchannel time delay to arrange.
Multichannel laser echo signal imitation system, comprise controller, multichannel variable power supply module, multichannel RC charge-discharge circuit module and capacitive coupling output port; Described controller is controlled multichannel variable power supply module and is provided the RC charging voltage for multichannel RC charge-discharge circuit module, and by changing the corresponding output signal amplitude that changes each passage of multichannel variable power supply module Zhong Ge road output voltage; The rise time that controller changes corresponding output signal by changing resistance value, capacitance or resistance value in multichannel RC charge-discharge circuit module and capacitance, and the delay between each passage output signal is controlled in the time delay between the gauge tap signal of each passage by controlling multichannel RC charge-discharge circuit module; Described multichannel RC charge-discharge circuit module output signal obtains AC compounent through capacitive coupling, and, through the output of capacitive coupling output port, realizes the multichannel analog laser echo signal.
Beneficial effect of the present invention: adopt multichannel laser echo signal imitation system of the present invention, can obtain the multi-path laser analogue echoes signal that between each channel signal amplitude, signal elevating time and each passage, time delay can arrange, at lower cost laboratory safety complete laser imaging system electronics debugging.
The accompanying drawing explanation
The structural representation that Fig. 1 is multichannel laser echo signal imitation system of the present invention;
Fig. 2 is for adopting digital to analog converter to realize variable power supply modular structure schematic diagram;
Fig. 3 is for adopting adjustable voltage stabilizer and digital potentiometer to realize variable power supply modular structure schematic diagram;
Fig. 4 for adopt digital potentiometer and fixedly appearance value electric capacity realize RC charge-discharge circuit structural representation;
Fig. 5 is for adopting fixed resistance value resistance and capacitor array and analog switch array to realize RC charge-discharge circuit structural representation;
Fig. 6 is for adopting digital potentiometer and capacitor array and analog switch array to realize RC charge-discharge circuit structural representation.
In figure: 1, controller, 2, multichannel variable power supply module, 3, multichannel RC charge-discharge circuit module, 4, display system, 5, the capacitive coupling output port, 6, keyboard, 7, power module, 8, single channel variable power supply module, 9, single channel RC charge-discharge circuit module, 10, digital to analog converter, 11, adjustable voltage stabilizer, 12, the first digital potentiometer, the 13, second digital potentiometer, 14, fixing appearance value electric capacity, 15, RC discharges and recharges the gauge tap circuit, 16, fixed resistance value resistance, 17, capacitor array, 18, analog switch array.
Embodiment
Embodiment one, in conjunction with Fig. 1, Fig. 2 and Fig. 4, present embodiment is described, multichannel laser echo signal imitation system, produce by the RC charge-discharge circuit voltage signal that index rises, obtain pulse signal by capacitive coupling, with the simulated laser echoed signal, RC charge-discharge circuit module is variable power supply, and the rise time of output signal is set by changing resistance value or capacitance or resistance value and capacitance; Control the delay between each passage output signal by the delay of controlling between the corresponding RC charge-discharge circuit of each output signal electric-controlled switch signal.Comprise controller 1, multichannel variable power supply module 2, multichannel RC charge-discharge circuit module 3, display system 4, capacitive coupling output port 5, keyboard 6 and power module 7.Multichannel variable power supply module 2 is respectively its corresponding multichannel RC charge-discharge circuit module 3 the RC charging voltage is provided, and changes each road output voltage of multichannel variable power supply module and can change its corresponding output signal amplitude; By changing the resistance value in multichannel RC charging circuit module 3, or capacitance, or resistance value and capacitance change its corresponding output signal rise time; Control the delay between each passage output signal by the time delay of controlling between multichannel RC charge-discharge circuit module 3 each passage gauge tap signals; Multichannel RC charge-discharge circuit module 3 output signals are obtained AC compounent through capacitive coupling, and through 5 outputs of capacitive coupling output port, with the simulated laser echoed signal; Can the information such as delay between each passage output signal amplitude, rise time, each passage be set by keyboard 6.Simultaneously, keyboard 6 can be realized all or single RC charge-discharge circuit 9 is discharged and recharged to control; All configuration informations can be sent into display system and be shown; Power module 7 provides required reference voltage for whole system; The whole system course of work is by controller 1 Collaborative Control.
The described controller 1 of present embodiment is selected FPGA or the microprocessors such as DSP or ARM.
The described multichannel variable power supply of present embodiment module 2 comprises a plurality of single channel variable power supply modules 8, described single channel variable power supply module is selected digital to analog converter 10, in conjunction with Fig. 2, write different numerical value by controller 1 to digital to analog converter 10 its corresponding multichannel variable power supply module 2 output voltages are set.Multichannel variable power supply module 2 output voltages are as the charging voltage of multichannel RC charge-discharge circuit module 3, and the difference of multichannel variable power supply module 2 output voltages makes its corresponding output signal amplitude difference.
The described multichannel RC charge-discharge circuit of present embodiment module 3 comprises a plurality of single channel RC charge-discharge circuit modules 9, resistance selection the second digital potentiometer 13 in described single channel RC charge-discharge circuit module 9, capacitance selection is appearance value electric capacity 14 fixedly, in conjunction with Fig. 4, write to the second digital potentiometer 13 resistance that different numerical value obtains different resistances by controller 1, thereby control the rise time of its corresponding single channel RC charge-discharge circuit module 9 output signals.Each single channel RC charge-discharge circuit module 9 in multichannel RC charge-discharge circuit module 3 all comprises RC and discharges and recharges gauge tap circuit 15, and it is with deciding the RC charge-discharge circuit in charged state or discharge condition, and switch controlling signal is provided by controller 1.Control the delay between each passage output signal by the time delay of controlling between multichannel RC charge-discharge circuit module 3 each passage gauge tap signals.RC discharges and recharges gauge tap circuit 15 and can be realized by the triode that is operated on off state or analog switch.
The described display system 4 of present embodiment can adopt LCD MODULE or a plurality of seven segment digital tubes to realize, all configuration informations can be sent into display system 4 and be shown.
Embodiment two, in conjunction with Fig. 5, present embodiment is described, present embodiment is different from embodiment one: the resistance selection fixed resistance value resistance 16 in the single channel RC charge-discharge circuit module 9 in described multichannel RC charge-discharge circuit module 3, capacitance selection capacitor array 17 and analog switch array 18 are realized, write different numerical value by controller 1 to analog switch array 18 and whether determine corresponding analog switch conducting.The corresponding electric capacity of each analog switch, in order to control whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values, and then control the rise time of its corresponding single channel RC charge-discharge circuit module 9 output signals.Other is identical with embodiment one.
Embodiment three, in conjunction with Fig. 6, present embodiment is described, present embodiment is different from embodiment one: resistance selection the second digital potentiometer 13 in the single channel RC charge-discharge circuit module 9 in described multichannel RC charge-discharge circuit module 3, capacitance selection capacitor array 17 and analog switch array 18 are realized, by controller 1, to the second digital potentiometer 13, write the resistance that different numerical value obtains different resistances; Simultaneously, write different numerical value by controller 1 to analog switch array 18 and whether determine corresponding analog switch conducting.The corresponding electric capacity of each analog switch, in order to control whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values.Control the rise time of its corresponding single channel RC charge-discharge circuit module 9 output signals by different resistances and capacitor's capacity.Other is identical with embodiment one.
Embodiment four, in conjunction with Fig. 3, present embodiment is described, present embodiment is different from embodiment one: described single channel variable power supply module 8 is realized by adjustable voltage stabilizer 11 and the first digital potentiometer 12 cooperatings, write different numerical value by controller 1 to the first digital potentiometer 12 and change adjustable voltage stabilizer 11 configuration resistances, thereby adjustable voltage stabilizer 11 output voltages are changed.Adjustable voltage stabilizer 11 output voltages are as corresponding single channel RC charge-discharge circuit module RC charging voltage, thereby determine its corresponding output signal amplitude.Other is identical with embodiment one.
Embodiment five, in conjunction with Fig. 3 and Fig. 5, present embodiment is described, present embodiment is different from embodiment one: described single channel variable power supply module 8 is realized by adjustable voltage stabilizer 11 and the first digital potentiometer 12 cooperatings, write different numerical value by controller 1 to the first digital potentiometer 12 and change adjustable voltage stabilizer 11 configuration resistances, thereby adjustable voltage stabilizer 11 output voltages are changed.Adjustable voltage stabilizer 11 output voltages are as corresponding single channel RC charge-discharge circuit module RC charging voltage, thereby determine its corresponding output signal amplitude.Resistance selection fixed resistance value resistance 16 in single channel RC charge-discharge circuit module 9 in described multichannel RC charge-discharge circuit module 3, capacitance selection capacitor array 17 and analog switch array 18 are realized, write different numerical value by controller 1 to analog switch array 18 and whether determine corresponding analog switch conducting.The corresponding electric capacity of each analog switch, in order to control whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values, and then control the rise time of its corresponding single channel RC charge-discharge circuit module 9 output signals.Other is identical with embodiment one.
Embodiment six, in conjunction with Fig. 3 and Fig. 6, present embodiment is described, present embodiment is different from embodiment one: described single channel variable power supply module 8 is realized by adjustable voltage stabilizer 11 and the first digital potentiometer 12 cooperatings, write different numerical value by controller 1 to the first digital potentiometer 12 and change adjustable voltage stabilizer 11 configuration resistances, thereby adjustable voltage stabilizer 11 output voltages are changed.Adjustable voltage stabilizer 11 output voltages are as corresponding single channel RC charge-discharge circuit module RC charging voltage, thereby determine its corresponding output signal amplitude.Resistance selection the second digital potentiometer 13 in single channel RC charge-discharge circuit module 9 in described multichannel RC charge-discharge circuit module 3, capacitance selection capacitor array 17 and analog switch array 18 are realized, by controller 1, to the second digital potentiometer 13, write the resistance that different numerical value obtains different resistances; Simultaneously, write different numerical value by controller 1 to analog switch array 18 and whether determine corresponding analog switch conducting.The corresponding electric capacity of each analog switch, in order to control whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values.Control the rise time of its corresponding single channel RC charge-discharge circuit module 9 output signals by different resistances and capacitor's capacity.Other is identical with embodiment one.
Above-mentioned embodiment is only for example clearly is described, but not to the restriction of embodiment.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation or changes.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or change are still among the protection domain in the invention.
Claims (10)
1. multichannel laser echo signal imitation system, comprise controller (1), multichannel variable power supply module (2), multichannel RC charge-discharge circuit module (3) and capacitive coupling output port (5); It is characterized in that, described controller (1) is controlled multichannel variable power supply module (2) and is provided the RC charging voltage for multichannel RC charge-discharge circuit module (3), and by changing the corresponding output signal amplitude that changes each passage of multichannel variable power supply module (2) Zhong Ge road output voltage; The rise time that controller (1) changes corresponding output signal by changing resistance value, capacitance or resistance value in multichannel RC charge-discharge circuit module (3) and capacitance, and the delay between each passage output signal is controlled in the time delay between the gauge tap signal of each passage by control multichannel RC charge-discharge circuit module (3); Described multichannel RC charge-discharge circuit module (3) output signal is obtained AC compounent through capacitive coupling, and, through capacitive coupling output port (5) output, realizes the multichannel analog laser echo signal.
2. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, also comprise display system (4), keyboard (6) and power module (7), delay between each passage output signal of each passage output signal amplitude of multichannel variable power supply module (2) and multichannel RC charge-discharge circuit module (3) is set by keyboard (6), simultaneously, keyboard (6) is realized multichannel RC charge-discharge circuit module (3) is discharged and recharged to control; And the information arranged is shown through display system (4); Power module (7) provides reference voltage for whole multichannel laser echo signal imitation system.
3. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, described multichannel variable power supply module (2) comprises a plurality of single channel variable power supply modules (8), multichannel RC charge-discharge circuit module (3) comprises a plurality of single channel RC charge-discharge circuit modules (9), described single channel variable power supply module (8) provides charging voltage for corresponding single channel RC charge-discharge circuit module (9), by the output voltage values that changes single channel variable power supply module (8), changes corresponding output signal amplitude.
4. multichannel laser echo signal imitation system according to claim 3, it is characterized in that, described single channel RC charge-discharge circuit module (9) comprises RC charge-discharge circuit gauge tap circuit (15), for determining that the RC charge-discharge circuit is in charged state or discharge condition; Control the delay between each passage output signal by the delay between the gauge tap signal of controlling each single channel RC charge-discharge circuit module (9) in multichannel RC charge-discharge circuit module (3).
5. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, described multichannel variable power supply module (2) is selected digital to analog converter (10), control digital to analog converter (10) by controller (1) and export the charging voltage of different voltage as multichannel RC charge-discharge circuit module (3), determine corresponding output signal amplitude.
6. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, multichannel variable power supply module (2) is coordinated by adjustable voltage stabilizer (11) and the first digital potentiometer (12), write different numerical value by controller (1) to the first digital potentiometer (12) and change adjustable voltage stabilizer (11) configuration resistance, adjustable voltage stabilizer (11) output voltage is changed, adjustable voltage stabilizer (11) output voltage, as the charging voltage of multichannel RC charge-discharge circuit module (3), is determined corresponding output signal amplitude.
7. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, resistance selection the second digital potentiometer (13) in described multichannel RC charge-discharge circuit module (3), capacitance selection is appearance value electric capacity (14) fixedly, control the resistance of the second digital potentiometer (13) by controller (1), determine the corresponding output signal rise time.
8. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, resistance selection fixed resistance value resistance (16) in described multichannel RC charge-discharge circuit module (3), capacitance selection capacitor array (17) and analog switch array (18), write different numerical value by controller (1) to analog switch array (18) and whether determine corresponding digital switch conducting; The corresponding electric capacity of each analog switch, for controlling whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values, controls the rise time of the output signal of corresponding single channel RC charge-discharge circuit module (9).
9. multichannel laser echo signal imitation system according to claim 1, it is characterized in that, resistance selection the second digital potentiometer (13) in described multichannel RC charge-discharge circuit module (3), capacitance selection capacitor array (17) and analog switch array (18), write to the second digital potentiometer (13) resistance that different numerical value obtains different resistances by controller (1); Write different numerical value by controller (1) to analog switch array (18) and determine the whether conducting of corresponding analog switch, the corresponding electric capacity of each analog switch, for controlling whether place in circuit of corresponding electric capacity, finally obtain the equivalent capacity of different appearance values; Control the rise time of the output signal of corresponding single channel RC charge-discharge circuit module (9) by different resistances and capacitor's capacity.
10. multichannel laser echo signal imitation system according to claim 1, is characterized in that, display system (4) selects LCD MODULE or a plurality of seven segment digital tubes to realize.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104035746A (en) * | 2014-06-06 | 2014-09-10 | 中国科学院长春光学精密机械与物理研究所 | Simple logarithmic change voltage generation circuit |
| CN108572355A (en) * | 2018-04-04 | 2018-09-25 | 南京理工大学 | A kind of laser echo simulation device |
| CN110121658A (en) * | 2016-12-30 | 2019-08-13 | 帕诺森斯有限公司 | LIDAR system |
| CN110456329A (en) * | 2019-08-20 | 2019-11-15 | 哈尔滨工业大学 | High-frequency high-precision return laser beam analogue system |
| WO2021253365A1 (en) * | 2020-06-17 | 2021-12-23 | 江苏中勘地质勘查有限公司 | High-frequency radar detection circuit for three-dimensional geological exploration and detection method therefor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035746A (en) * | 2014-06-06 | 2014-09-10 | 中国科学院长春光学精密机械与物理研究所 | Simple logarithmic change voltage generation circuit |
| CN104035746B (en) * | 2014-06-06 | 2017-02-15 | 中国科学院长春光学精密机械与物理研究所 | Simple logarithmic change voltage generation circuit |
| CN110121658A (en) * | 2016-12-30 | 2019-08-13 | 帕诺森斯有限公司 | LIDAR system |
| CN110121658B (en) * | 2016-12-30 | 2023-10-17 | 祖克斯有限公司 | LIDAR system |
| CN108572355A (en) * | 2018-04-04 | 2018-09-25 | 南京理工大学 | A kind of laser echo simulation device |
| CN110456329A (en) * | 2019-08-20 | 2019-11-15 | 哈尔滨工业大学 | High-frequency high-precision return laser beam analogue system |
| WO2021253365A1 (en) * | 2020-06-17 | 2021-12-23 | 江苏中勘地质勘查有限公司 | High-frequency radar detection circuit for three-dimensional geological exploration and detection method therefor |
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