CN2736737Y

CN2736737Y - Laser spot position detector

Info

Publication number: CN2736737Y
Application number: CN 200420092325
Authority: CN
Inventors: 张培忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-09
Filing date: 2004-09-09
Publication date: 2005-10-26
Anticipated expiration: 2014-09-09

Abstract

The utility model provides a laser spot position detector, which comprises a laser head, a filter, a black-white camera, a position detection circuit and a power supply; the utility model is characterized in that the position detection circuit is provided with an H-hold and V-hold simultaneous separator, a reference voltage generator, a superspeed comparator, a clock generator, a dot clock counter, a line counter, a data latch and a time sequence logic controller. The objective is projected by the laser light, and spot is formed. The video signal flow is detected at real time through the detection circuit, and the data of the position of the laser spot can be obtained. The laser spot position detector can be used for detecting the result of the laser simulation shooting system, and can also be used for the positioning of the objective position of the laser television guidance system.

Description

The laser spot position detecting device

Affiliated technical field

The utility model relates to the laser spot position pick-up unit, belongs to electronic technology field.

Background technology

Laser has good directionality, monochromaticity is good, brightness is high, the coherence is good characteristic.Wherein, semiconductor laser head is applicable to laser simulated firing.The laser projections target forms laser facula.Position probing to laser facula is the gordian technique of laser simulated firing.At present, in laser simulated firing is used, technique known is, laser that laser head is launched forms flare in object scene, adopt camera to obtain target image, the vision signal end of output connects the input end of capture card, and computing machine obtains facula position by the image of catching of capture card by the image processing software system.This technology exists acquisition speed slow, and it is long to take the host CPU time, and real-time is poor, system cost height, sweeping problem.

Summary of the invention

In order to overcome the deficiency that real-time is poor, system cost is high of existing laser-bounce facula position pick-up unit, the utility model provides a kind of laser spot position detecting device, this laser spot position detecting device can not only be measured laser spot position in real time, and system cost is lower.Can the detection laser flare, also can monitor laser facula by the rear-projection mode.

The technical scheme that its technical matters that solves the utility model adopts is: adopt B, be fixed on the reference position, optical filter is housed before the camera lens.The optical window peak of optical filter is consistent with laser head emission Wavelength of Laser.The image of video camera picked-up laser facula, export to the facula position testing circuit with the vision signal form, the facula position testing circuit comprises row, field synchronization separation vessel, reference voltage generator, high-speed comparator, clock generator, the Dot Clock counter, linage-counter, data latches, sequential logic controller.The vision signal of video camera output links to each other with the input end of row, field synchronization separation vessel, and sync separator is told line synchronizing signal and field sync signal.The line synchronizing signal output terminal links to each other with the input end of clock of linage-counter, and the field sync signal output terminal links to each other with the reset terminal of linage-counter, and every begins the linage-counter zero clearing that resets, and linage-counter is counted row then.Sync separator is told line synchronizing signal and is also linked to each other with the reset terminal of Dot Clock counter simultaneously, the output terminal of clock generator links to each other with the input end of clock of Dot Clock counter, every row begins the linage-counter zero clearing that resets, and the Dot Clock counter is counted Dot Clock then.Above-mentioned vision signal outputs to an input end of high-speed comparator simultaneously, and another input end of high-speed comparator links to each other with the voltage output end of reference voltage generator, and the output of high-speed comparator links to each other with the input of sequential logic controller.Because the signal intensity of laser facula is greater than the signal intensity of other scenery, the reference voltage generator threshold value is adjusted to the level of the vision signal that is higher than common scenery, be lower than the level of the vision signal of hot spot.At the facula position of vision signal, high-speed comparator output impulse level, the sequential logic controller obtains above-mentioned impulse level, and the numerical value of linage-counter and Dot Clock counter is also exported by latches.The count value of the Dot Clock counter of latches is the relative position of laser facula signal and row synchronous head signal, the just horizontal relative position of laser facula.The count value of the linage-counter of latches is the relative position of a laser facula signal and field synchronization signal, just the vertically opposite position of laser facula.Computing machine can produce the achievement of simulated gunnery or mutual animation by above-mentioned data.

The beneficial effects of the utility model are, can measure laser spot position in real time, and system architecture are simple, and cost is lower.The achievement that can be used for laser simulated firing system detects, and also can be used for the location, target location in the laser television guidance system.

Description of drawings

Below with reference to the accompanying drawings, in conjunction with the embodiments, the utility model is explained detailedly.

Fig. 1 is the system diagram of the utility model embodiment.

Fig. 2 is the utility model is just being thrown mode at laser simulated firing an embodiment block diagram.

Fig. 3 is the embodiment block diagram of the utility model in laser simulated firing rear-projection mode.

Fig. 1 is the system diagram of the utility model embodiment.1 is laser head among the figure, and 2 is B, and 3 are row, field synchronization separation vessel, 4 is clock generator, 5 is reference voltage generator, and 6 is high-speed comparator, and 7 is the Dot Clock counter, 8 is linage-counter, 9 is the sequential logic controller, and 10 is the horizontal level output latch, and 11 is the upright position output latch, 12 is power supply, and 13 is optical filter.

Fig. 2 is the utility model is just being thrown mode at laser simulated firing an embodiment block diagram.17 is ordinary target among the figure, and 14 for being equipped with the emulation rifle of laser head, and 15 are the indication of shots computing machine, and 16 is the facula position testing circuit.

Fig. 3 is the embodiment block diagram of the utility model in laser simulated firing rear-projection mode.17 is ordinary target among the figure, and 14 for being equipped with the emulation rifle of laser head, and 15 are the indication of shots computing machine, and 16 is the facula position testing circuit.

The course of work of the utility model embodiment is as follows.Laser head (1) emission pulse laser is radiated on the target, form hot spot, the B (2) that is fixed on the Reference sees through optical filter (13) acquisition target image, it is consistent that the optical window peak value of optical filter (13) and laser head (1) are launched optical maser wavelength, reduces the undesired signal that parasitic light causes.Video camera (2) video output terminals links to each other with the input end of row, field synchronization separation vessel (3), and row, field synchronization separation vessel (3) are isolated line synchronizing signal and field sync signal in the vision signal.Every starting position, field system chronizing impulse signal of field sync signal output terminal output; Every capable starting position, horizontal synchronizing pulse signal of line synchronizing signal output terminal output.Adopt the video camera of D standard, the field sync signal frequency is 50Hz, and the line synchronizing signal frequency is 15625Hz.The line synchronizing signal output terminal links to each other with the input end of clock of linage-counter (8), and the field sync signal output terminal links to each other with the reset terminal of linage-counter (8), and every begins the linage-counter zero clearing that resets, and linage-counter is counted row then; The line synchronizing signal output terminal links to each other with the reset terminal of Dot Clock counter (7) simultaneously, the output terminal of clock generator (4) links to each other with the reset terminal of Dot Clock counter (7), every row begins the zero clearing that resets of count value to Dot Clock counter (7), and Dot Clock counter (7) is counted Dot Clock then.Video camera (2) video output terminals simultaneously with an input end of high-speed comparator (6), another input end of high-speed comparator (6) links to each other with reference voltage generator (5).Reference voltage generator (5) output threshold level is adjusted to the level of the vision signal that is higher than common scenery, be lower than the level of the vision signal of hot spot, the output terminal of high-speed comparator (6) links to each other with the input of sequential logic controller (9), in the hot spot moment of video signal flow, high-speed comparator (6) goes out impulse level, sequential logic controller (9) obtains above-mentioned impulse level, the numerical value of linage-counter (8) and Dot Clock counter (7) is latched and exports by latch (10) (11), the count value of the Dot Clock counter that horizontal level output latch (10) latchs, be the horizontal relative position of laser facula, the count value of the linage-counter that upright position output latch (11) latchs is the vertically opposite position of laser facula.Miscellaneous equipment (as computing machine) can carry out the mutual or achievement demonstration of animation by the position data of the utility model acquisition.

The DLC (digital logic circuit) part of the utility model embodiment comprises Dot Clock counter (7), linage-counter (8), and sequential logic controller (9), horizontal level latch (10), upright position latch (11) adopts programming device to carry out integrated.

Just throwing among the embodiment (Fig. 2) of mode at laser simulated firing at the utility model, emulation rifle (14) emission pulse laser of laser head is housed, go up the formation flare at target (17), video camera (2) and laser head emulation rifle (14) are in the same side of target (17), video camera (2) obtains picture signal in real time, facula position testing circuit (16) obtains laser spot position, inputs to indication of shots computing machine (15) and handles, indication of shots in real time.Present embodiment is applicable to lighttight target in kind.

At the utility model in the embodiment of laser simulated firing rear-projection mode (Fig. 3), emulation rifle (14) emission pulse laser of laser head is housed, go up the formation hot spot at target (17), video camera (2) is in the opposite side of target (17) with respect to laser head emulation rifle (14), video camera (2) obtains picture signal in real time, facula position testing circuit (16) obtains laser spot position, inputs to indication of shots computing machine (15) and handles, indication of shots in real time.Present embodiment is applicable to the paper target of printing opacity.

Claims

1. laser spot position detecting device, comprise: laser head, optical filter, B, power supply, OK/field synchronization separation vessel, reference voltage generator, high-speed comparator, clock generator, Dot Clock counter, linage-counter, data latches, the sequential logic controller, it is characterized in that: optical filter is equipped with in the cam lens front of being fixed on the Reference, and it is consistent that the optical window peak and the laser head of optical filter sent out Wavelength of Laser.

2. laser spot position detecting device according to claim 1, the vision signal that it is characterized in that camera output links to each other with the input end of row, field synchronization separation vessel, the capable synchronous output end of sync separator links to each other with the input end of clock of linage-counter, also link to each other simultaneously with the reset terminal of Dot Clock counter, the field synchronization output terminal of sync separator links to each other with the reset terminal of linage-counter, also links to each other with the input of sequential logic controller simultaneously.

3. laser spot position detecting device according to claim 1, the vision signal that it is characterized in that camera output links to each other with an input end of high-speed comparator, another input end of high-speed comparator links to each other with reference voltage generator, and the output of high-speed comparator links to each other with the input of sequential logic controller.

4. laser spot position detecting device according to claim 1 is characterized in that the output terminal of clock generator links to each other with the input end of clock of Dot Clock counter.

5. laser spot position detecting device according to claim 1 is characterized in that the data input of data latches links to each other with the data output end of Dot Clock counter and linage-counter, and the control input of data latches links to each other with the output of sequential logic controller.