RU2129288C1 - Device detecting optoelectronic objects - Google Patents

Abstract

FIELD: detection of optoelectronic objects. SUBSTANCE: device is used in the capacity of indicator for detection of optoelectronic objects when they get in field of vision of it. Device has two laser systems detecting optoelectronic objects that include frequency-pulse laser with objective lens and photodetector with objective lens mounted on platforms rotating about vertical axis for oscillatory-rotary motion of frequency-pulse laser and photodetector, counter of radiation pulses of frequency-pulse laser, sensor of angular positions of photodetector and frequency-pulse laser, unit determining angular coordinates of optoelectronic objects and unit computing true coordinates of optoelectronic objects which first and second inputs are connected to outputs of first and second laser systems detecting optoelectronic objects, storage which first input is linked to output of unit computing true coordinates, information display which input is connected to output of storage, unit of selection of detected objects which output is connected to second input of storage, unit computing present-position coordinates which output is connected to third input of storage. Laser systems are positioned in one plane. EFFECT: increased efficiency of detection of optoelectronic objects under dynamic mode of observation. 2 dwg

Description

 The invention relates to the field of automation and computer technology and can be used as an indicator device for detecting optoelectronic objects when they fall into the field of view of the device.

 The prototype of the invention can be considered a laser system for detecting optoelectronic objects (OEO) (Application GB N 2256554 G 01 S 17/42 dated 09/12/92), containing a frequency-pulse laser (CHIL) with a lens and a photo-receiving device (FU) with lens, the information display unit, the input of which is connected to the output of the memory unit. This system allows you to detect optoelectronic objects in a dynamic observation mode.

The disadvantages of the prototype include:
- the lack of determining the true X, Y, Z coordinates of optoelectronic objects (the angular coordinates of the OEO are determined with increasing error with increasing detection range. Thus, when scanning horizontally with a step of 1 ^o at a distance of 1000 m, the error is more than 17 m, which is not enough to take operational countermeasures);
The aim of the invention is to increase the detection efficiency of optoelectronic objects.

Fundamentally, this is achieved by:
- the introduction of an additional second laser system for detecting optoelectronic objects, spaced relative to the first one at the base distance B (Fig. 1) and located in the same plane;
- introducing an additional unit for calculating the true coordinates of the OEO (BVK), the first and second inputs of which are connected to the output of the first and second laser systems for detecting optoelectronic objects; a memory unit, the first input of which is connected to the output of the unit for calculating the true coordinates of the WEE; an information display unit, the input of which is connected to the output of the memory unit; a block of sampling detected objects, the output of which is connected to the second input of the memory block; a current coordinate calculating unit (BVTC), the output of which is connected to the third input of the memory block;
- use of a specialized software product and Note book.

The essence of the invention is illustrated in the drawing (Fig. 1), where the numbers indicate:
1,2 - respectively, the first and second laser systems for detecting optoelectronic objects;
3 - unit for calculating the true coordinates of the WEEE (BVK);
4 - memory unit (PSU);
5 - block display information;
6 - block selection of detected objects;
7 - block calculating the current coordinates (BVTK);
8 - a specialized software product.

 Comparison with the prototype shows that the inventive device is distinguished by the presence of new blocks and their interconnections. Thus, the claimed device meets the criterion of "novelty."

 Comparison of the proposed solution with other technical solutions shows that the listed elements used in the blocks are known, however, their introduction in this connection with other elements leads to an increase in the accuracy of determining the coordinates of optical guidance devices. This confirms that the technical solution meets the criterion of "significant differences".

 In FIG. 1 shows a block diagram of a device.

 The device operates as follows.

Z $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ = h ± (X $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ )²+(Y $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ )²tgξ,
где h - высота установки лазерных систем 1, 2; знак (+) - если ξ_l > 0;
(-) - если ξ_l < 0.
Вычисленные значения текущих координат l-го ОЭО записываются в блок памяти 4 и отображаются на электронной карте заданного района анализа в местной системе координат в блоке отображения информации 5, в качестве которого может быть использован экран персонального компьютера Note book.In a given moving coordinate system XYZ (Fig. 1), laser systems for detecting AEOs 1, 2, spaced apart from each other by a base distance B, detect the l-th optoelectronic object with coordinates X $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ , Y $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ , Z $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ , l = 1, 2, ... In this case, the angular coordinates α _l and β _{l of the} rotating platforms and the angular coordinates ξ _{l of the} hinges of both laser systems are determined, the values of which are supplied to the true coordinate calculation unit (BVC) 3, where X is calculated $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ , Y $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ , Z $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ according to the following formulas:

Z $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ = h ± (X $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ ) ² + (Y $\genfrac{}{}{0ex}{}{\text{l}}{\text{T}}$ ) ² tgξ,
where h is the installation height of the laser systems 1, 2; sign (+) - if ξ _l >0;
(-) - if ξ _l <0.
The calculated values of the current coordinates of the l-th OEO are recorded in the memory unit 4 and displayed on the electronic map of the specified analysis area in the local coordinate system in the information display unit 5, which can be used as a Notebook PC screen.

 The memory block 4 also stores data of electronic terrain maps, which are displayed on the screen depending on the location of the laser detection systems 1, 2. For this, a current coordinate calculation unit (BTC) 7 is introduced into the device, which is a regular GPS navigation receiver (for example, GARMIN series), which provides real-time current geographical coordinates of a moving object. These coordinates are also recorded in the memory unit 4. Using a specialized software product 8 allows, firstly, to carry out this recording, and secondly, to select the necessary sheet of the electronic map with recalculation of the geographical coordinates of the moving laser systems in the local coordinate system, resulting in the information display unit 5 will contain current information about the moving object and information about all detected AEOs.

 The software also solves the issue of choosing a specific WEEE. This is carried out by the sampling unit detected OEE 6.

 Thus, on a computer screen in real time, a topographic map of the area will be displayed, presented in electronic form, in the center of which information is displayed in the form of a moving point that simulates a mobile laser detection system, as well as all detected AEOs that were within the detection range. When moving laser systems, a map of the area is scrolled with fixed points of the detected OEOs. If necessary, data on the coordinates of each OEO can be displayed on the screen (block 5) using block 6.

The operation of the unit (BVK) 3 (Fig. 2)
The true coordinate calculation unit 3 implements the calculation of functions (1). These transformations are carried out in arithmetic logic devices (ALU) 9, 10 (for example, ALUs of the K155IP3, K561IP3 type can be used), the outputs of which are fed to the memory unit 4. The base distance B and the installation height h of the laser systems are constant and also served on the inputs of ALU 9, 10.

Claims (1)

 A device for detecting optoelectronic objects (OEO), comprising a laser OEO detection system, including a pulse frequency laser (CHIL) with a lens and a photodetector (FU) with a lens, and an information display unit, the input of which is connected to the output of the memory unit, characterized in that a second laser OEO detection system is introduced, spaced relative to the first by a base distance and located in the same plane, a unit for calculating the true coordinates of the OEO, the first and second inputs of which are connected to the outputs of the first and a second laser OEO detection system, a block of sampling detected objects, the output of which is connected to the second input of the memory unit, the first input of which is connected to the output of the unit for calculating the true coordinates of the OEO, and a current coordinate calculator, the output of which is connected to the third input of the memory unit, In each laser system for detecting the AEO, mounted on a rotating platform with the possibility of its vibrational-rotational movement, a counter of pulses of radiation is introduced, an angle sensor for the angular position of the radiation detector, and an element are defined Nia corner OEO coordinates.

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