CN104296607B - Laser fuze closes feedback test device and test system and method for testing - Google Patents
Laser fuze closes feedback test device and test system and method for testing Download PDFInfo
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- CN104296607B CN104296607B CN201410416216.6A CN201410416216A CN104296607B CN 104296607 B CN104296607 B CN 104296607B CN 201410416216 A CN201410416216 A CN 201410416216A CN 104296607 B CN104296607 B CN 104296607B
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Abstract
The open a kind of laser fuze of the present invention closes feedback test device, and this test device comprises: controller, and it receives the initial time of laser fuze output, and to export emissioning controling signal on the basis of initial time after a delay time △ T；Generating laser, its inlet circuit connects described controller, during for receiving the emissioning controling signal of controller output, launches laser to laser fuze.The present invention obtains delay time, time delay on the basis of the initial time that laser fuze sends according to laser fuze detection rangeAnd produce emissioning controling signal；Generating laser is launched laser by emissioning controling signal control to laser fuze, then, according to receiving reception time of laser and between initial time differentiates that target is settled in an area, thus, it is achieved that the functional check of laser fuze in laboratory environments.
Description
Technical field
The present invention relates to the measuring technology of a kind of laser fuze, be specifically related to a kind of laser fuze and close feedback test device and test system and method for testing.
Background technology
For laser fuze, test system and method for testing are the important means of inspection product.Low coverage detection target in good time ignition are the major functions of laser fuze, and directly reflect that the Anti-interference algorithm starting sensitivity and capacity of resisting disturbance of laser fuze detectivity is the most important technical specification of laser fuze, its numerical value quality directly influences the overall performance of laser fuze, the biggest visual field laser fuze, requiring higher to test site, the feedback test system of closing of effective indoor static means of testing and complete function is the important component part that system tested by laser fuze.
The clock frequency of existing laser fuze signal processing is general all at more than 10kHz, within clock accuracy can reach 4ns.Within a clock cycle (0 ~ about 100ms), the identification to target, the identification of interference and the process of Comprehensive Signal Processing are needed, target is distributed in the whole clock cycle (0 ~ about 100ms) with the time delay of interference, and in order to preferably realize the difference of target and interference, the clock accuracy of signal processing needs to control at about 4ns, therefore, complete signal simulation needs to carry out high-precision delays time to control within the whole clock cycle.
Same, in order to ensure certain operating distance, the transmitting power of laser fuze is generally all at more than 100W, and the sensitivity of receiver is typically all nanowatt ~ microwatt level, therefore close feedback test and need not the biggest transmitting power indoor and can complete, it is therefore desirable to carry out large-scale energy adjusting to launching power.
Traditional feedback test systems most that closes is directly to be imported launch window laser by optical fiber to receive window, rarer intermediate optical signal processing procedure, decay and signal delay for energy only adjust in limited range, adjust and the energy adjusting of (60dB) in dynamic range far from the signal delay meeting (a few nanosecond ~ tens microsecond) in the whole clock cycle.
Summary of the invention
The present invention provides a kind of laser fuze to close feedback test device and test system and method for testing, it is achieved the signal delay of long clock cycle adjusts and the energy adjusting of Larger Dynamic scope.
For achieving the above object, the present invention provides a kind of laser fuze to close feedback test device, is characterized in, this test device comprises:
Controller, the initial time of its reception laser fuze output, and to export emissioning controling signal on the basis of initial time after a delay time △ T；
Generating laser, its inlet circuit connects described controller, during for receiving the emissioning controling signal of controller output, launches laser to laser fuze.
Controller noted above comprises:
Communication module, itself and laser fuze and generating laser communication connection；
Processing module, its circuit connects described communication module, range finding distance according to laser fuze draws delay time △ T, and when receiving, by communication module, the initial time that laser fuze sends, by on the basis of initial time after described delay time △ T, send emissioning controling signal by communication module to generating laser.
Above-mentioned delay time △ T tries to achieve according to formula (1):
△T=L/C
(1)
Wherein, C represents that the light velocity, L are expressed as the range finding distance of laser fuze.
This test device also includes circuit and connects the energy attenuator of generating laser, and circuit connects the time delay optical fiber of controller, and energy attenuator is also connected with time delay optical fiber, controller and time delay optical fiber and connects laser fuze.
A kind of laser fuze closes feedback test system, is characterized in, this system comprises above-mentioned laser fuze and closes feedback test device, and laser fuze；Laser fuze sends initial time and after a delay time, receives laser fuze and closes the laser that feedback test device is launched, the initial time sent with laser fuze according to the reception time receiving laser, simulation distance and position residing for measured target.
A kind of above-mentioned laser fuze closes the method for testing of feedback test system, is characterized in, the method comprises:
Controller draws a delay time △ T1=L1/C according to distance L1 of laser fuze with simulation measured target, and C represents the light velocity；
Controller receives the initial time T1 of laser fuze output, by the basis of initial time after delay time △ T1, i.e. in the T1+ △ T1 moment, produce and export emissioning controling signal:
Generating laser receives emissioning controling signal, i.e. launches laser to laser fuze；
Laser fuze receives the laser of laser transmitter projects, and records reception time T2；
Laser fuze is according to receiving time T2 and initial time T1, it determines between the simulation measured target of laser fuze is settled in an area, thus simulate the distance and position residing for measured target.
Before controller noted above receives initial time, by test device, generating laser is directed at laser fuze.
The simulation measured target of above-mentioned differentiation laser fuze comprises between being settled in an area:
Laser fuze simulated target echo distance S1 of detection simulation measured target on detection direction is drawn according to formula (2):
(2)
Wherein, T1 is the initial time that laser fuze sends, and T2 is the reception time that laser fuze receives laser from initial time after delay time △ T1, and C represents the light velocity.
After above-mentioned simulated target echo distance S1 drawing simulation measured target, adjust the backward energy of generating laser according to laser fuze detection simulation target echo distance S1 on detection direction, and export target echo energy P1.
Above-mentioned simulated laser fuze detection is simulated by sidelong glance timestamp, goes back simulated laser fuze detection to interference；
If interference is L2 with the distance of laser fuze, drawing an interference delay time △ T2=L2/C, C represents the light velocity；
Controller, in the T1+ △ T2 moment, controls generating laser and launches laser to laser fuze, it is thus achieved that the reception time T3 of interference；
Show that laser fuze detects interference echo distance S2 of interference on detection direction according to formula (3):
(3)
Wherein, T1 is the initial time that laser fuze sends, and T3 is the reception time that laser fuze receives laser from initial time after interference delay time △ T2, and C represents the light velocity；
Adjust the backward energy of generating laser according to interference echo distance S2, export interference echo energy P2；
Last laser fuze identification simulation measured target and the interference of simulation.
Laser fuze of the present invention closes feedback test device and test system and method for testing is compared with the laser fuze measuring technology of prior art, have an advantage in that, the present invention obtains delay time, time delay on the basis of the initial time that laser fuze sends according to laser fuze detection rangeAnd produce emissioning controling signal；Generating laser is launched laser by emissioning controling signal control to laser fuze, then, according to receiving reception time of laser and between initial time differentiates that target is settled in an area, thus, it is achieved that the functional check of laser fuze in laboratory environments.
Accompanying drawing explanation
Fig. 1 is the structural representation that laser fuze of the present invention closes feedback test device；
Fig. 2 is the flow chart that laser fuze of the present invention closes feedback method of testing.
Detailed description of the invention
Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present invention.
The invention discloses a kind of laser fuze and close feedback test device and test system and method for testing, solve existing laser fuze and close feedback test system and cannot realize the signal delay of long clock cycle and adjust and the problem of energy adjusting of Larger Dynamic scope.
As shown in Figure 1, the embodiment of feedback test device is closed for a kind of laser fuze, this test device comprises: controller 1, inlet circuit connects the generating laser 2 of controller output end, circuit connects energy attenuator 3 and the time delay optical fiber 4 of circuit connection controller 1 of generating laser, and energy attenuator 3 is also connected with time delay optical fiber 4.Controller 1 and time delay optical fiber 3 are communicatively connected to laser fuze 5.
Controller 1 is used for receiving the initial time of laser fuze output, and to export emissioning controling signal to generating laser 2 after a delay time △ T on the basis of initial time.
Controller 1 includes: the communication module communicated to connect with laser fuze and generating laser, and circuit connects the processing module of communication module.
Communication module, for communicating with laser fuze and generating laser, receives the initial time that laser fuze sends, and sends emissioning controling signal to generating laser.
Processing module is for drawing delay time △ T according to the range finding distance of laser fuze, and when receiving, by communication module, the initial time that laser fuze sends, by on the basis of initial time after described delay time △ T, send emissioning controling signal by communication module to generating laser.
Above-mentioned delay time △ T can try to achieve according to formula (1):
△T=L/C
(1)
Wherein, C represents that the light velocity, L are expressed as the range finding distance of laser fuze.
When generating laser 2 is for receiving the emissioning controling signal of controller 1 output, launch laser to laser fuze 5.
Energy attenuator 3 is for being controlled the laser signal energy size of input laser fuze 5.
Time delay optical fiber 4 is for carrying out accurate delays time to control to the laser signal of input laser fuze 5.
Invention additionally discloses the laser fuze in a kind of laboratory and close feedback test system, this system comprises above-mentioned laser fuze and closes feedback test device and laser fuze.Laser fuze sends initial time and closes feedback test device to laser fuze, laser fuze closes feedback test device after a delay time, laser is launched to laser fuze, after laser fuze receives the laser that laser fuze closes feedback test device transmitting, the initial time sent with laser fuze according to the reception time receiving laser, between the simulation measured target of differentiation laser fuze is settled in an area, adjust laser energy in good time, and carry out target or the identification of interference and process.
Herein, it determines the work in interval, simulation measured target place is completed by the circuit of laser fuze self, compared with the information preset in circuit, can determine target place interval.The simulation measured target of laser fuze refers to the differentiation basis of time of laser fuze self circuit presets between being settled in an area, this differentiation basis of time preset is corresponding with range information, can show that simulation measured target is interval from the distance of laser fuze between being settled in an area according to simulation measured target.
As shown in Figure 2, the present invention discloses a kind of laser fuze and closes the method for testing of feedback test device, this sentence be provided with at simulated range laser fuze 3 meters simulation measured target and simulation 6 meters at be provided with interference in case of, illustrate the embodiment of method of testing, the method includes the steps of:
Step 1, controller are according to distance L of laser fuze with simulation measured target1Draw a delay time △ T1=L1/ C, C represent the light velocity, try to achieve delay time △ T1=3/C.Simultaneously according to distance L of laser fuze Yu the interference of simulation2Draw an interference delay time △ T2=L2/ C, C represent the light velocity, try to achieve interference delay time △ T2=6/C。
Before step 2, controller receive initial time, close feedback test device by laser fuze and generating laser is directed at laser fuze.Special photoelectricity align structures and benchmark can be designed with on test device, be directed at by automated manner.
Step 3, laser fuze transmit initial time T to controller1, controller receives initial time T1.Controller is respectively according to the delay time △ T for simulation measured target1=3/C, and the interference delay time △ T for simulation interference2=6/C, draws the time exporting emissioning controling signal respectively, at T1+△T1(with initial time T1On the basis of through delay time △ T1) and T1+△T2(with initial time T1On the basis of through interference delay time △ T2) moment, produce respectively and export emissioning controling signal.
Step 4, generating laser are respectively at T1+△T1Moment and T1+△T2The emissioning controling signal of reception controller output, and launch laser to laser fuze respectively.
Step 5, laser fuze receive the laser of laser transmitter projects, and record the reception time.Receiving with initial time T1On the basis of time delay △ T1The laser of rear transmitting, the first reception time that laser fuze is recorded is T2.And receive with initial time T1On the basis of time delay △ T2The laser of rear transmitting, the second reception time that laser fuze is recorded is T3。
Step 6, laser fuze receive time T according to first2With initial time T1, it determines between the simulation measured target of laser fuze is settled in an area, thus differentiate simulation distance and position residing for measured target, specifically comprise:
Laser fuze simulated target echo distance S of detection simulation measured target on detection direction is drawn according to formula (2)1:
(2)
Wherein, T1The initial time sent for laser fuze, T2For laser fuze from initial time through delay time △ T1The reception time of rear reception laser, C represents the light velocity.
Meanwhile, show that laser fuze detects interference echo distance S of interference on detection direction according to formula (3)2:
(3)
Wherein, T1The initial time sent for laser fuze, T3For laser fuze from initial time through interference delay time △ T2The reception time of rear reception laser, C represents the light velocity.
Step 7, due to the backward energy in different distance different, need to adjust according to distance in good time.Therefore drawing simulated target echo distance S of simulation measured target1Interference echo distance S after and2, according to simulated target echo distance S1With interference echo distance S2Adjust the backward energy of generating laser, and output target echo energy P1 and interference echo energy P2 respectively respectively.
Adjust the backward energy of generating laser be by controller according to working distance equation formula (4) draw required adjust energy after export corresponding backward energy again；
(4)
In formula (4):Power is launched for laser instrument；For optical transmitting system aggregate efficiency,；For receiving optics aggregate efficiency；For atmospheric transmittance；For body surface reflectance；θ is the angle of sight line and body surface normal；L is the length (projection value) being launched the target site that visual field covers；For the effective clear field of receiving optics；Φ F is the angle of visibility launching visual field；RTFor operating distance.
Step 8, last laser fuze identification simulation measured target and the interference of simulation.
Feedback test device and test system and method for testing is closed by laser fuze disclosed by the invention, i.e. achieve the simulation test of target in laboratory environments and interference, realize the signal delay of long clock cycle in testing and adjust and the energy adjusting of Larger Dynamic scope.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that the description above is not considered as limitation of the present invention.After those skilled in the art have read foregoing, multiple amendment and replacement for the present invention all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a laser fuze closes feedback test device, it is characterised in that this test device comprises:
Controller, the initial time of its reception laser fuze output, and to export emissioning controling signal on the basis of initial time after a delay time △ T；
Generating laser, its inlet circuit connects described controller, during for receiving the emissioning controling signal of controller output, launches laser to laser fuze；
Wherein, described controller comprises:
Communication module, itself and described laser fuze and generating laser communication connection；
Processing module, its circuit connects described communication module, range finding distance according to laser fuze draws delay time △ T, and when receiving, by communication module, the initial time that laser fuze sends, by on the basis of initial time after described delay time △ T, send emissioning controling signal by communication module to generating laser；
Described test device also includes circuit and connects the energy attenuator of generating laser, and circuit connects the time delay optical fiber of controller, and energy attenuator is also connected with time delay optical fiber, controller and time delay optical fiber and connects laser fuze.
2. laser fuze as claimed in claim 1 closes feedback test device, and described delay time △ T tries to achieve according to formula (1):
△ T=L/C (1)
Wherein, C represents that the light velocity, L are expressed as the range finding distance of laser fuze.
3. a laser fuze closes feedback test system, it is characterised in that this system comprises the laser fuze as described in any one claim in claim 1 to 2 and closes feedback test device, and laser fuze；Described laser fuze sends initial time and after a delay time, receives laser fuze and closes the laser that feedback test device is launched, the initial time sent with laser fuze according to the reception time receiving laser, it determines simulation distance and position residing for measured target.
4. a laser fuze as claimed in claim 3 closes the method for testing presenting test system, it is characterised in that the method comprises:
Controller is according to distance L of laser fuze with simulation measured target1Draw a delay time △ T1=L1/C, C represent the light velocity；
Controller receives the initial time T of laser fuze output1, through delay time △ T on the basis of initial time1After, i.e. T1+△T1In the moment, produce and export emissioning controling signal:
After generating laser receives emissioning controling signal, i.e. launch laser to laser fuze；
Laser fuze receives the laser of laser transmitter projects, and records reception time T2；
Laser fuze is according to receiving time T2With initial time T1, it determines between the simulation measured target of laser fuze is settled in an area, thus differentiate simulation distance and position residing for measured target.
5. method of testing as claimed in claim 4, it is characterised in that before described controller receives initial time, is directed at generating laser with laser fuze by test device.
6. method of testing as claimed in claim 4, it is characterised in that the simulation measured target of described differentiation laser fuze comprises between being settled in an area:
Laser fuze simulated target echo distance S of detection simulation measured target on detection direction is drawn according to formula (2)1:
S1=(T2-T1)×C (2)
Wherein, T1The initial time sent for laser fuze, T2For laser fuze from initial time through delay time △ T1The reception time of rear reception laser, C represents the light velocity.
7. method of testing as claimed in claim 6, it is characterised in that described in draw laser fuze simulated target echo distance S of detection simulation measured target on detection direction1After, according to simulated target echo distance S1Adjust the backward energy of generating laser, and export target echo energy P1。
8. method of testing as claimed in claim 7, it is characterised in that described laser fuze detection simulation, by sidelong glance timestamp, goes back simulated laser fuze detection to interference；
If interference is L with the distance of laser fuze2, draw an interference delay time △ T2=L2/ C, C represent the light velocity；
Controller is at T1+△T2In the moment, control generating laser and launch laser to laser fuze, it is thus achieved that the reception time T of interference3；
Show that laser fuze detects interference echo distance S of interference on detection direction according to formula (3)2:
S2=(T3-T1)×C (3)
Wherein, T1The initial time sent for laser fuze, T3For laser fuze from initial time through interference delay time △ T2The reception time of rear reception laser, C represents the light velocity；
According to interference echo distance S2Adjust the backward energy of generating laser, export interference echo energy P2；
Last laser fuze identification simulation measured target and the interference of simulation.
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| CN108572355B (en) * | 2018-04-04 | 2022-03-22 | 南京理工大学 | Laser echo simulation device |
| CN109059687B (en) * | 2018-07-16 | 2024-04-12 | 南京理工大学 | Dynamic arming time testing device and testing method for fuse safety system |
| CN109884652A (en) * | 2019-03-04 | 2019-06-14 | 光梓信息科技（上海）有限公司 | Pulse laser driver and delay calibration method, laser radar and distance measuring method |
| CN111609771B (en) * | 2020-04-19 | 2021-05-18 | 北京理工大学 | Laser fuse spacing method in aerosol environment |
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