KR100198392B1 - Optical proximity fuzes - Google Patents

Abstract

The present invention provides a transmission apparatus for inspecting a receiver of a laser signal.

The receiving device check transmitting apparatus for receiving the laser signal includes: a power supply unit 100 for supplying necessary power; An oscillation circuit unit 200 generating a predetermined square wave; An infrared laser including an infrared laser diode (LD) for generating an infrared laser to cause a laser beam emitted from a transmitting unit of the fuse to reflect a laser beam having a quantity of optical energy input to the receiving unit to be reflected to a target; Generation unit 300; An infrared laser deforming unit 500 for transmitting the laser light generated by the laser diode LD in a fan shape; In addition, the laser generating unit 300 and the oscillation circuit unit 200 of the inspection transmitter are provided with a switch 400 which is a power applying means for enabling the connection and opening of the power source. It is characterized in that to enable the check of the receiver without transmission of the transmitter or reflection of the target.

Accordingly, when the receiver checks the laser signal transmission / reception signal target detection device, the receiver can be simulated by generating an infrared laser which enables the receiver to be inspected from the outside without the need for the operation of the transmitter or the reflection of the target. It works.

Description

Transmitter for inspection of laser signal receiver

The present invention relates to a transmitter for checking a receiver of a proximity fuse, and more particularly, to an optical proximity that transmits laser light to a target in a transmitter, and receives and processes a signal reflected by the target in the receiver to generate an amplification signal. The present invention relates to a transmitter for checking a receiver of a near-fuse, which is a transmission simulation device for screening whether or not the receiver of a fuse is normally operated in a fuse / receiver of the fuse.

In general, fuse is a function that causes the initial process of the explosive chain to ignite and explode the explosive of the explosive, and when the explosive is detonated, it is the equipment to cause the explosive to ignite until the explosive of the bomb. When classified according to the function or function of the fuse, it can be classified into impact fuse, time fuse, peripheral fuse, proximity fuse, and command fuse.

The optical proximity fuse, which is the object of the present invention, transmits laser light through an optical transmission device, receives the transmitted laser light from the target, and processes the received signal to detect the distance to the target and provide an optimum approach distance. The detonator is set to operate the moment it is detected.

2 shows a basic configuration of a conventional laser signal transmission and reception target detection device.

Conventional laser signal target detection device comprises a power supply 1, a transmitter 2, a receiver 3, a signal comparator 4, a signal processor 5 and the ignition output unit.

The power supply unit 1 receives 28V of power from the thermal cell in the fuse to supply power (+ 15V, -15V, + 5V, + 70V) and ground (GND) contacts required for each part of the target detection device of the laser signal. It is composed.

The transmitting unit 2 is composed of a laser diode which is an energy source of a receiving unit, a driving unit for driving the laser diode, and an infrared laser deforming unit for unfolding the output of the laser diode in a fan shape.

The receiver 3 includes a photo detector for detecting the light energy reflected by the target and converting the light energy into an electrical signal, a reception amplifier circuit for amplifying a weak signal detected by the photo detector, and the photo detector. And a receiving optical device for determining a sensing area of a received signal.

The signal comparator 4 and the signal processor 5 input a received amplified signal to select only a signal having a predetermined level or more, and determine the authenticity of the selected signal by determining the authenticity of the selected signal through a comparator and a comparator. It consists of a true signal discrimination algorithm.

And an ignition output unit capable of finally igniting and detonating by an ignition command according to the result determined by the algorithm.

The optical proximity fuse thus constructed operates as follows.

The power supply unit 1 of the laser signal is supplied with a 28V power supply from a thermal cell in the fuse, and the power supply (+ 15V, -15V, + 5V, + 70V) and ground (GND) contact required for each part of the target detection device of the laser signal. To supply.

The operation of the driving unit for driving the laser diode of the transmitter 2 transmits laser light of a predetermined wavelength for transmission at a time corresponding to the target sensing distance of the fuse, and the transmitting laser light transmits the infrared laser deformation part. The fan is spread out in a fan shape.

The laser light transmitted through the infrared laser deforming unit is transmitted to the target, and the transmitted laser light is reflected by the reflection of the target and received as light energy in the receiving unit of the laser signal.

The photo detector of the receiver 3, in which the signal sensing region of the photodiode is determined from the receiving optical device, detects the light energy reflected by the target object, converts it into an electrical signal, and converts the weak signal detected by the photo detector into the reception amplifier circuit. Amplify through.

The signal comparator 4 and the signal processor 5 input the received and amplified signals to select only signals of a level or higher set through a signal comparator, and determine the authenticity of the selected signals through a true signal discrimination algorithm. Determine the presence of.

An ignition command is made based on the result of comparison and determination by the algorithm of the signal comparator and the signal processor, and finally the ignition output of the laser signal is made.

However, when checking the operation of the receiver by the configuration and operation of such a conventional laser signal transmission / reception signal target detection device, the operation of the transmitter is required and thus a target is required, and the operation of the transmitter is also required. There is a problem that the complexity of the inspection equipment and inconsistency occurs, and that the correct inspection of the receiver is difficult in the case of a malfunction of the receiver of the receiver due to an error in the transmitter.

Accordingly, the present invention has been invented to solve the above problems, in the inspection of the receiver of the transmission and reception signal target detection apparatus of the proximity fuse, it is possible to check the receiver from the outside without the need of operation of the transmitter or reflection of the target. It is an object of the present invention to provide a transmitter for inspecting a receiver of a laser signal, which is an external laser transmitter capable of simulating a receiver by generating a laser.

1 is a block diagram showing a process of transmitting and receiving a laser signal.

2 is a basic configuration of a laser beam transmission and reception target detection device.

3A is a perspective view of a transmitter for inspecting a receiver of a laser signal according to an embodiment of the present invention.

3B is a plan view of a transmitter for checking a receiver of a laser signal according to an embodiment of the present invention.

4 is a circuit diagram of a transmitter for checking a receiver of a laser signal according to an embodiment of the present invention.

5 is an output waveform diagram of a transmission infrared laser diode of a transmitter for checking a receiver of a laser signal according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: power supply of fuse 2: transmitter of fuse

3: receiving unit of fuse 4 receiving signal comparing unit

5: signal processing unit 100: power supply unit of a transmitter

200: oscillation circuit portion 300: laser generation portion

400: switch 500: infrared laser deformation unit

C: Capacitor Q: Transistor

D1, D2, D3: Diode

SCR: 3-terminal thyristors (Silicon Controlled Rectifier)

LD: Laser Diode

In order to achieve the above object, the apparatus for inspecting a laser signal receiver for performing a receiver check of a laser signal transmission / reception target detection apparatus according to the present invention includes a power supply for supplying necessary power; An oscillation circuit unit driven by receiving power from a power supply unit and generating a predetermined square wave; Receiving unit of the fuse is a laser light which is supplied with power from the power supply unit and is driven by receiving a predetermined square wave from the oscillating circuit unit, the laser beam emitted from the transmitting unit of the fuse is reflected to the target and has a positive light energy input to the receiving unit. An infrared laser generator including an infrared laser diode to generate an infrared laser to be incident to the light source; An infrared laser deforming unit for spreading and transmitting the transmitting infrared laser light generated by a laser diode in a fan shape by driving the infrared laser generating unit; In addition, the laser generating unit and the oscillating circuit unit of the inspection transmitter are provided with a switch which is a power supply means for enabling the connection and opening of the power supply, so that the transmission and reception of the laser signal transmission and reception target detection device are not transmitted or reflected. Characterized in that it allows the receiver check.

The power supply for supplying the power required for the receiver check transmission device for connecting the + 15V power supply for supplying + 15V power to the laser generator and the oscillator circuit, and the ground of each laser generator and the oscillator circuit. And a GND providing a contact.

In addition, in the infrared laser generator, which is an infrared laser generator, an inductance component for using a method of charging and discharging the voltage to realize a condition that driving of the laser diode is possible by applying a very short pulse voltage to the laser diode. A capacitor which is a voltage charging / discharging means having a low equivalent series resistance (ESR) component and good frequency characteristics; A method of charging a capacitor includes: a transistor which is a charge buffering means for charging a capacitor using a + 15V power supply of a power supply to limit the charging current so that the capacitor charges the power supply of the power supply; The output of the oscillator circuit is received as the input of the gate, and the SCR is turned on at the same point where the anode current of the SCR and the gate input current are the same so that the capacitor is discharged, and the base of the transistor is completed when the capacitor is discharged. SCR, a three-terminal thyristor that turns the SCR off by holding the current below the holding current of the SCR to recharge the capacitor by a + 15V supply from the power supply; Diodes connected in parallel to each other to reduce dynamic impedance; And an infrared laser diode driven by turning on / off of the SCR according to charging and discharging of the capacitor to convert current energy into an infrared laser which is optical energy.

In addition, the infrared laser deforming unit for spreading the transmission infrared laser light generated by the laser diode generated in the laser diode in a fan shape by the driving of the laser generating unit includes an optical beam spreader for spreading the transmission infrared laser light for transmission to the receiving unit. It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 show a perspective view and a circuit diagram of a transmitter for inspecting a receiver of a laser signal according to an embodiment of the present invention.

As shown in FIG. 4, a transmitter for inspecting a receiver of a laser signal, which enables inspection of a receiver of a target detector of a laser signal transmission / reception, includes a power supply unit 100, an oscillation circuit unit 200, and a laser generator 300. ), The switch 400, and the infrared laser deformation unit 500 shown in FIG. 3b.

The power supply unit 100 is for supplying a + 15V power source and a ground GND contact required for the receiver check transmitter, and are respectively supplied to the laser generator 300 and the oscillator circuit 200 of the receiver check transmitter. It comprises a + 15V power supply for supplying a 15V power supply and GND, which is a contact for connecting the ground of each laser generating section and the oscillation circuit section.

In addition, the oscillator circuit 200 is driven by receiving + 15V power from the power supply unit 100 and is connected to the SCR gate G of the infrared laser generator 300 to enable the switching action of the SCR by the gate applied current. It has a configuration as a square wave generator of a predetermined (6kHz 200nSEC).

In addition, the laser generator 300 is driven by receiving + 15V power from the above-described power supply unit 100 and applying a predetermined square wave from the oscillation circuit unit to the gate of the SCR. For generating laser light such as a light energy source acting as an input of the capacitor, the capacitor (C), the transistor (Q), the three-terminal thyristor SCR, the diodes (D1, D2, D3), and the laser diode (LD) It consists of. The connection structure and configuration conditions of the respective components will be described later.

The switch 400 is configured as an inspector switch as shown in FIG. 3A so that the receiver inspector of the laser signal can turn on the switch of the receiver inspection transmitter on the receiver input side of the fuse.

The infrared laser deforming unit 500 is for transmitting the infrared laser light for transmission generated in the laser diode LD by the driving of the driving unit 300 in a fan shape and transmitting the infrared laser light for transmission although not shown. It further comprises a beam spreader (beam spreader) for spreading and transmitting to the receiver.

The capacitor C of the laser generator 300 described above charges and discharges a voltage to realize a condition that driving of the laser diode LD is possible by applying a very short pulse voltage to the laser diode LD. The method is based on the means for charging and discharging the voltage of the laser generating unit 300, which has a low inductance component and an equivalent series resistance (ESR) component and a good frequency characteristic.

In addition, the transistor Q restricts the charging current so that the capacitor C charges the power of the power supply unit 100 by charging the capacitor C, and thus the capacitor C using the + 15V power supply of the power supply unit. It is configured as a charging buffer means capable of charging.

The SCR, a three-terminal thyristor, outputs the output of the oscillator circuit 200 to the gate G to discharge the SCR turn-on foreign capacitor C at the point where the anode current of the SCR and the input current of the gate are the same. When the capacitor C is discharged, the SCR is turned off and the capacitor C is restarted by the + 15V power supply of the garden supply unit when the discharge of the capacitor C is completed. It is configured to be connected in parallel with the capacitor (C) to be charged.

In addition, diodes D1, D2, and D3 are configured to be connected in parallel with each other in order to reduce dynamic impedance.

The laser diode LD is used to convert current energy into an infrared laser which is optical energy, and is connected in series with the SCR to be driven by charging and discharging of the capacitor C and turning on / off of the SCR. C) is connected in parallel.

A detailed operation process of the apparatus for checking a receiver for receiving a laser signal according to an embodiment of the present invention configured as described above will be described with reference to FIG.

The power supply unit 100 of the transmitter for checking the receiver unit supplies a + 15V power source and a ground (GND) contact point to each of the oscillation circuit unit 200 and the infrared laser generation unit 300.

The oscillator circuit 200 is driven by receiving the + 15V power of the power supply and supplies a square wave of a predetermined (6 kHz 200 nSEC) to the gate G of the SCR existing in the infrared laser driver 300.

The receiver inspector of the laser signal determines the position of the receiver occupying transmitter to be located at the receiver input side of the fuse and turns on the switch 400.

+ 15V power is applied to the infrared laser generation unit 300 by the switching operation of the inspector, thereby charging the capacitor C through the transistor Q. At this time, the SCR is turned off until the anode input current of the SCR is equal to the input current from the oscillator circuit 200 to the gate G of the SCR, and the capacitor C is charged while the SCR is open. .

When the capacitor is charged, the anode input current of the SCR is reduced to turn on the SCR. At this time, the electric charge charged in the capacitor is discharged from the infrared laser diode LD through the SCR.

Due to the charging and discharging effect of the capacitor, a very short pulse voltage (FIG. 5) is applied to the laser diode LD to drive the laser diode.

The infrared laser light generated through the laser diode passes through a beam spreader present in the infrared laser deformer 500 and is unfolded into a fan shape and is transmitted to the receiver of the laser signal to act as an optical energy input of the receiver.

The port detector detects the optical energy output from the receiver checking transmitter and converts the light energy into an electrical signal, amplifies the weak signal detected by the photo detector through a reception amplifier circuit, and compares the signal with the signal comparator 4. Receives the signal received and amplified by the processing unit 5 and selects only the signal above the level set by the signal comparator, and determines the existence of the target by determining the authenticity of the selected signal through the true signal discrimination algorithm, and determines the comparison According to the result, an ignition command is issued, and finally, an operation of a receiver according to a series of receiver inspection transmitters, such as an ignition output of a laser signal, is performed.

According to the configuration and function of the transmitter for inspecting the receiving part of the laser signal according to the embodiment of the present invention described above, the operation of the transmitting part or the reflection of the target is not necessary when the receiving part of the laser signal transmitting and receiving signal target detection device is inspected. By generating an infrared laser that enables the receiver to be inspected from the outside, the receiver can be simulated. In the existing receiver inspection process, a target is required and the transmitter is also driven. In addition, there is an effect of solving a problem such that it is difficult to accurately inspect the receiver when the receiver is abnormal in the reception operation due to the transmitter.

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited thereto, and modifications and improvements are possible within the ordinary knowledge of those skilled in the art.

Claims (5)

In checking the receiving portion of the laser signal: a power supply unit 100 for supplying necessary power; An oscillator circuit 200 driven by receiving power from the power supply unit 100 and generating a predetermined square wave; The laser is driven by receiving power from the power supply unit 100 and receiving a predetermined square wave from the oscillation circuit unit 200. The laser beam emitted from the transmitting unit of the fuse reflects a target and has a positive amount of optical energy input to the receiving unit. An infrared laser generator 300 including an infrared laser diode (LD) for generating an infrared laser to cause light to enter the receiver of the fuse; An infrared laser deforming unit 500 for transmitting the infrared laser light for transmission generated by the laser diode LD by the driving of the infrared laser generating unit 300 in a fan shape; In addition, the laser generating unit 300 and the oscillation circuit unit 200 of the inspection transmitter are provided with a switch 400 which is a power applying means for enabling the connection and opening of the power source. An apparatus for inspecting a receiver of a laser signal, characterized in that for checking a receiver without transmitting a transmitter or reflecting a target. The power supply unit 100 for supplying the necessary power is a + 15V power supply unit and each laser generation unit for supplying + 15V power to the laser generator 300 and the oscillator circuit 200, respectively. And a GND for connecting the ground of the oscillation circuit part to the ground. According to claim 1, Infrared rays which can be driven by receiving a + 15V power from the power supply unit 100 is input to the laser beam, such as a light energy source that is reflected to the target laser of the transmitter to the receiver to act as an input of the receiver The laser generator 300 charges and discharges a voltage for using a method of charging and discharging the voltage to realize a condition that driving of the laser diode is possible by applying a very short pulse voltage to the laser diode LD. A capacitor C as discharge means; In the charging method of the capacitor C, the charging for charging the capacitor C using the + 15V power supply of the power supply unit so as to limit the charging current so that the capacitor C charges the power of the power supply unit 100. Transistor Q as a buffer means; When the predetermined square wave of the oscillator circuit 200 is input, the SCR is turned on at the same point as the anode current of the SCR and the input current of the gate to discharge the capacitor C, and upon completion of the discharge of the capacitor C, An SCR that is a three-terminal thyristor which causes the capacitor C to be recharged by the + 15V power supply of the garden supply unit by turning off the SCR by setting the base current of the transistor Q to be less than or equal to the holding current of the SCR; And a diode (D1, D2, D3) connected in parallel to each other in order to reduce dynamic impedance. The metallized poly according to claim 3, wherein the capacitor C, which is a means for charging and discharging the voltage, is a very important part in the charging and discharging circuit, and has a low inductance component and an equivalent series resistance (ESR) component of the capacitor and good frequency characteristics. Transmission device for checking the receiving portion of the laser signal, characterized in that the propylene (metalized polypropylene) capacitor. According to claim 1, Infrared laser deforming unit 500 for transmitting the infrared laser light for transmission generated in the laser diode (LD) in a fan shape by the driving of the laser generating unit 300 is transmitted infrared laser And a light beam spreader for spreading light and transmitting the light to a receiver.

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