Optical programer

 

(57) Abstract:

Usage: optical devices for remote non-contact inspection and measurement of the spatial position of the parts of the extended object during its deformation and can be used as a measuring device in the engineering, construction, aircraft and shipbuilding. The invention is: to improve measurement accuracy, programer contains consistently located emitter, the lens forming two optical channel prism block installed in each channel targets, between prismatic block and target goals established optical compensators, each of the expansion joints mechanically connected to the respective engine testing and the corresponding displacement transducer, and each of the target goals made in the form of position-sensitive recording systems, with each system through a control device connected with the above engine testing, the output of each of the displacement sensors with the respective input of the computing devices and the corresponding indicator, and the output of the computing device to the third indicator. 1 and 5 C. p. the x devices for remote non-contact inspection and measurement of the spatial position of the parts of the extended object during its deformation.

It can be used as a measuring device in the engineering, construction, aircraft and shipbuilding.

Known electric dock programer SEM (TU OST B5.8441-76) containing the unit of the basic directions in the form of a metallic rod of length not more than 1 m, the position-sensitive recording system in the form of an inductive transducer that outputs an electrical signal when the deformation of the hull relative to the measurement database (rod), analog computing device to process the signal of the inductive sensor and the indicator.

A small length of the measuring base does not allow to record the deflection of the entire dock and makes it possible to measure only the local deformation of the dock within a database. Increasing the length of the mechanical base is limited by its instability due to the lack of rigidity and impact of external mechanical and thermal impacts. Installing multiple pad along the entire length of the dock, reaching several hundred meters, is also not possible to determine the total deflection, so as not solved the problem of linking position without in different pad.

Also known optical programer (and.with. N 346573, CL G 01 B 11/16, BI N 23 1972), which allows recorded which is closest to the alleged invention of the device and is taken as a prototype. It contains unit basic directions in the form of consecutive eyepiece, lens and forming two optical channel prism block, and installed in each channel targets in the form of plates with the scales. Targets are set for controlled points (on the bow and the stern) of the dock and the unit base direction between the controlled points (control station). The generator creates long optical measuring base in the form of two sighting lines. The reference values of deflection (bow and stern relative to the control) is visually observed simultaneously in the field of view eyepiece scales both sighting purposes.

Optical programer has low accuracy due to the influence of the conditions of observation and subjective measurements, it is not possible to control deformation of the bow and stern dock separately and use programer as sensor alarms and automatic alignment of the dock. This is caused by the lack of prohibere electrical signals associated with the deformation values for controlled points.

The problem to which the invention is directed, making the stern dock separately and use programer as sensor alarms and automatic alignment system.

This problem is solved by carrying out the invention at the expense of achieving a technical result, which consists in receiving the electrical signals associated with the deformation of the object to controlled points.

This technical result in the implementation of the invention is achieved in that the optical programer contains consistently located the lens, forming two optical channel prism block installed in each channel targets, in front of the lens on its optical axis is selected emitter, between the prismatic block and target goals established optical compensators, each of the expansion joints mechanically connected to the respective engine testing and the corresponding displacement transducer, and each of the target goals made in the form of position-sensitive recording systems, with each system through a control device connected with the above engine testing, the output of each of the displacement sensors with the respective input of the computing device and the corresponding indicator, and the output of the computing device with the third indicator.

Special cases of the implementation of ramohalli reflective prism, and its edge formed cachetime reflecting faces, perpendicular to the optical axis of the lens, the two radiation sources with different radiation parameters, which are located symmetrically with respect to the reflecting faces of the prism, and modulator radiation, each source is connected with the corresponding output of the modulator, and each of the position-sensitive recording system is made in the form of a lens and located in its focal plane of the receiver of optical radiation.

The computing device includes a summing device and the divider, and the inputs of the summing device is connected to the respective outputs of the displacement sensors, the output of summing device to the input of the divider, and the output of the amplifier with the third indicator.

The optical compensator of each channel is made in the form of consecutive positive and negative lenses and a positive lens mounted for movement in a direction perpendicular to the optical axis and mechanically connected with the engine of development and a displacement sensor.

Each of the displacement sensors in each of the described joints made in via the output of each of the potentiometers is connected to the corresponding input of the computing device.

The radiation sources described in the radiator is designed as LEDs, the modulator radiation in the form of generator voltage and two frequency dividers with different conversion factors, and the generator output is connected to the inputs of the frequency dividers and the output of each of the dividers with the corresponding light-emitting diode, each of the control devices, in this case made in the form of two filters, two detectors and subtractive device, and an input filter connected to the output of the receiver of optical radiation, the output of each of the filters with the input of the corresponding detector, the output of each of the detectors with the respective input of subtractive device, the output of subtractive device to the respective engine testing.

Set out a set of essential features of the proposed invention allows to achieve the desired technical result and to solve the problem. The presence of the emitter allows you to create the optical channels of the measuring base in the form of radiation beams, the position-sensitive recording system to generate an electrical signal when the offset systems in relation to the base, the optical compensators engine testing facility accurately measure the deformation of the bow and stern dock separately, to control alarms and automatic alignment of the dock. Computing device allows to measure the deflection deformation of the bow and stern dock. Objectivity and high sensitivity position-sensitive recording system makes it possible to increase the measurement accuracy.

The analysis of the prior art, including searching by the patent and scientific and technical information sources, has allowed to establish that the authors have not detected the device, characterized by signs, identical to all the essential features of the claimed device, and in relation to the technical results revealed a distinctive set of essential features. Therefore, the proposed device complies with the requirement of novelty.

To check the compliance of the claimed device, the requirement of inventive step was conducted an additional search of the known solutions to identify characteristics that match the distinctive features of the prototype of the characteristics of the claimed invention.

The results of this search show that the proposed device is not necessary for the expert in the obvious way from the prior art.

The essence of the image of the emitter, in Fig. 2, b is a structural diagram of a position-sensitive recording system of Fig.3 is a structural diagram of a computing device of Fig.4 scheme of the optical compensator of Fig.5 kinematic relationship diagram displacement sensor with lens compensator of Fig.6,a block diagram of the emitter with LEDs, Fig.6,b block diagram of the control device of Fig.7 circuit diagram of a computing device.

Optical programer (Fig.1) consists of consecutive lens 1, creating two optical channel prism block 2 and installed in each of the channels target goals 3 and 3'. In front of the lens 1 on the optical axis is selected emitter 4. Between the prismatic block 2 and target goals 3 and 3' is installed optical compensators 5 and 5'. Each of the joints 5 (5') is mechanically connected to the respective engine testing 6 (6') and the corresponding displacement sensor 7 (7'). Each of the target goals 3 (3') is made in the form of a position-sensitive positioning system. The output of each system 3 (3') via the control device 8 (8') is connected to the engine testing 6 (6'). The output of each of the displacement sensors 7 (7') is connected with the corresponding input is where it will 11.

In private cases, the elements of prohibere are as follows.

Emitter 4 (Fig.1) located in front of the lens 1 (Fig.2A) on its optical axis, consists of a rectangular reflective prism 12, the two radiation sources 13 and 13' with different radiation parameters and radiation modulator 14. Reflective prism 12 is installed so that its edge formed latentnyi reflecting faces, perpendicular to the optical axis of the lens 1. The radiation sources 13 and 13' are located symmetrically with respect to the reflecting faces of the prism 12. Each of the springs 13 (13') is connected with the corresponding output of the modulator 14. At this position-sensitive recording system 3 (3') in each of the optical channels of prohibere (Fig.1) made in the form of lens 15 (Fig. 2B) and located in its focal plane of the receiver of optical radiation 16.

The emitter and the position-sensitive recording system can be constructed differently. For example, the emitter may be made in the form of a laser and a position-sensitive recording system, in this case, is in the form of mnogoelementnykh linear receiver of optical radiation.

Computational uedineny with the outputs of the respective displacement sensors 7 and 7', and the output of the summing device 17 to the input of the divider 18. The output of divider 18 is connected to the input of the indicator 11.

The optical compensator 5 (5') in each of the optical channels of prohibere placed between the prism block 2 (Fig.4) and a position-sensitive recording system 3', consists of tandem 19 positive and negative 20 lenses. Positive lens 19 can be moved in the direction perpendicular to the optical axis. The lens 19 is mechanically connected with the engine testing 6' and the displacement sensor 7'.

The optical compensator may also be performed in the form of two rotating wedges, tilting plane-parallel plate, etc.

Each of the displacement sensors 7 (7') (Fig.4) is designed as a multi-turn potentiometer 21 (Fig. 5) which is mechanically connected with the positive lens of the compensator 19 by a screw mechanism 22 and gear 23. Through the same screw mechanism 22 moves the lens 19 through engine testing 6'. The displacement sensors can also be performed in the form of selsyns, rotary transformers, inductive transducers, etc.

The radiation sources 13 (13') (Fig.2,a) is made in in the astati 26 and 26 with different conversion factors. The output of generator 25 is connected to the inputs of the frequency dividers 26 and 26'. The output of each of the dividers 26 (26') is connected with the corresponding led 24 (24'). In this case, each of the control devices 8 (8') (Fig.1) consists of two filters 27 (27') (Fig. 6b), two detectors 28 (28') and subtractive device 29. The input of each of the filters 27 (27') is connected to the output of the corresponding receiver of optical radiation 16 (Fig.2B), the output of each of the filters 27 (27') (Fig. 6b) with the input of the corresponding detector 28 (28'), the output of each of the detectors 28 (28') with the respective input of subtractive device 29, the output of subtractive device 29 to the respective engine testing 6'.

The modulator and the control device may also be constructed differently. For example, the modulator may consist of a generator and the phase shifter, and the output of the generator is connected to one of the LEDs and to the input of the phase shifter, and the output of the phase shifter with the second led. In this case, the control device will be made in the form of amplitude-phase detector, one input of which is connected to the output of the receiver of optical radiation, and the other with the generator output.

Optical programer works as follows (see Fig.1). Emitter 4 sends the Fig hand, and forming extended optical measuring base. Each thread passes through the corresponding optical compensator 5 (5') and gets installed in the control points of the target for goal 3 (3'). In the absence of deformation in the control points of the targets 3 and 3' do not move relative to the measuring base, the error signals from the position-sensitive recording systems in target order and control devices 8 and 8' are absent, and the motors 6 and 6' do not rotate. With displacement sensors 7 and 7' in the computing device 9 receives zero signals, and indicators 10, 10' and 11 are shown three zero reference, respectively, the deformation of the nose, deformity of the stern and deflection.

In the presence of deformation targets 3 and 3' are shifted relative to the optical measuring base. With position-sensitive recording systems in target order receives signals mismatch in the control device 8 and 8', and with control devices for motors for testing 6 and 6'. The motors move the joints 5 and 5', and the joints of the optical measuring base until, until you cease to receive signals from the position-sensitive recording systems. Move the joints 5 and which return signals, proportional to the displacement, respectively, the target goals 3 and 3', in the computing device 9 and the indicators 10 and 10'. The indicators 10 and 10' appear respectively splitting deformations of the bow and stern. Computing device 9 displays on the indicator 11 the reference deflection calculated by the formula:

< / BR>
where n' deformity of the nose;

n" deformation stern;

n deflection.

The emitter (Fig.2A) is as follows. The modulator 12 modulates the radiation sources 13 and 13' in a different way. As a result, the radiation sources 13 and 13' is different from each other in frequency modulation, phase, or any other parameter. The springs 13 and 13' send radiation to the respective reflecting faces of a rectangular prism 12, which directs the radiation to the lens 1. Thus, the reflecting faces of the prism 12 are secondary radiation sources. Lens 1 projects into the space of the prism edge 12, thus forming the beam in two parts with a sharp boundary on the axis, the image of the edges of the prism 12), and the radiation in each part of the beam is different on any parameter. Such a spatial distribution of radiation forms an optical measuring base in the form of ravesignal plane (Succssfully recording system (Fig. 2B) works as follows. If the entrance pupil of the lens 15 is located symmetrically with respect to ravesignal plane, the receiver of optical radiation 16 gets the same number of threads radiation from sources 13 and 13'. In the position-sensitive recording system produces two identical in size, though different in some parameter of an electrical signal. the error signal is absent. If the entrance pupil of the lens 15 is shifted from the symmetric position, the receiver 16 gets a different number of threads radiation from sources 13 and 13'. As a result the system generates unequal in magnitude and differ in some parameter electrical signals that form the error signal.

The computing device (Fig.3) works as follows. With displacement sensors 7 and 7' to the inputs of a summing device 17 receives signals proportional to the displacement of the respective position-sensitive recording systems for measuring base. Summing device 17 generates a signal equal to the sum of the input signals. This signal is applied to the divider 18, the output of which appears the signal,osenkov Y. , Fundamentals of theory and calculation of the EIA. M. Owls. radio, 1971, S. 177). Positive 19 and negative 20 lenses have one flat and one spherical surface and the spherical surface have the same radius of curvature, but with a different sign. Therefore, when the coincidence of the optical axes of the lenses 19 and 20 they are plane-parallel plate and do not deviate passed through the beam. The displacement of the lenses 19 and 20 relative to each other in the direction perpendicular to the optical axis deviation occurs passing through the compensator beam by an angle proportional to the displacement of the lenses. As mentioned previously, the displacement of the targets 3' relative to the measuring base (ravesignal plane) from the control unit to the motor 6' receives the signal, causing it to rotate. Engine 6' moves the lens 19, rejecting ravesignal plane as long as the target for goal 3' and the control unit stops receiving signals of the error. The displacement sensor 7' generates a signal proportional to the displacement of the lens 19, beam deflection, and therefore the offset targets 3'.

The displacement sensor (Fig. 5) works as follows (Designing the EIA. Ed. Yakushenkova Yu, M. Malinda through the screw mechanism 22 and gear 23 on the shaft of the multi-turn potentiometer 21. With the potentiometer 21 is removed electrical signal proportional to the rotation angle of the shaft, which is proportional to the displacement of the lens 19.

The emitter (Fig. 6A) works as follows. With generator voltage 25 signal is supplied to the frequency dividers 26 and 26' with different conversion factors. As a result, the frequency divider on the led 24 power, modulation frequency1and the led 24' frequency2. Thus, the emitter forms in space, the beam is divided into two parts, each of which radiation has its frequency modulation.

The control unit (Fig. 6b) works as follows. In the absence of displacement of the position-sensitive recording system with ravesignal plane with the receiver of optical radiation 16 to the inputs of the filters 27 and 27' receive equal signals with frequency modulation 1and2. The filter 27 selects the signal with a frequency of1and the filter 27' with a frequency of2. These signals are sent to the detectors 28 and 28', retaining the positive and negative voltage. With the detector signals are on subtractive device 29. Because the signals are equal in magnitude, the subtractive device does not emit from nosignalling plane with the receiver of optical radiation 16 to the inputs of the filters 27 and 27' are received various size signals with frequency modulation1and2. Passing through the filters 27 and 27' and the detectors 28 and 28', the signals are in subtractive device 29, the output of which there appears a signal to the engine control testing 6'. The direction of rotation of the motor 6' is determined by the predominance of the signal of one or the other frequency.

In the specific example of implementation of the optical prohibere generator voltage is performed on the chip TO 561 LA7, frequency dividers on the chip TO 561 TM2 and 561 IE.

The radiation sources is made in the form of a semiconductor emitting diodes AL B.

As a receiver of optical radiation used for the photodiode PD 263.

The filters implemented by the schemes of active bandpass filters tuned at a frequency of1and2(Izyumova, I. Calculation of electronic circuits. High school, 1989, S. 194). The detectors are made under the scheme of the diode bridge with capacitive filter. Subtractive device implemented according to the scheme of parallel adder at the operational amplifier (A. Alekseenko, and other precision analog ICS. Radio and communications, 1981, S. 77).

Computing device made in the form of resistive chain R1, R2, R3(Fig. 7), which is analog Semiramis combination of pentaprism roof (type CDB-90) and a rectangular prism (type AR-90).

Indicators can be any analog or digital electrical appliances.

As engine testing used DC motors PDM-20.

Thus, the combination of these features of the proposed optical programer allows measurements with high accuracy, to control the deformation of the bow and stern dock separately, to use it as a sensor alarm and automatic alignment of the dock.

It should also be noted that the inventive optical programer makes it possible to reduce the complexity of the measurements and to provide simultaneous measurement of strain in a range of intermediate control points along the length of the dock, as the measuring base is not a line and a plane.

1 1. Optical programer containing sequentially spaced lens, forming two channel optical prism unit installed in each channel targets, wherein programer equipped with a radiator mounted in front of the lens on its optical axis, the two optical compensators, each of which is mounted between the prismatic block the communication, the two control devices, the computing device and the three LEDs, and each of the target goals made in the form of position-sensitive recording system, each of the expansion joints mechanically connected to the respective engine testing and the corresponding displacement transducer, the output of each of the position-sensitive recording system via the control device is connected to the respective engine testing, the output of each of the displacement sensors with the respective input of the computing device and the corresponding indicator, and the output of the computing device with the third indicator. 2 2. Programer under item 1, characterized in that each of the position-sensitive recording system is made in the form of a lens and located in its focal plane of the receiver of optical radiation, and the emitter is made in the form of a rectangular reflective prism, two radiation sources with different radiation parameters and radiation modulator, and an edge of the prism formed cachetime reflecting faces, perpendicular to the optical axis of the lens, the radiation sources are arranged symmetrically with respect to the reflecting faces of the prism that the computing device comprises a summing device and the divider moreover, the output of the summing device is connected to the input of the divider, and the inputs of the summing device and the output of the divider are respectively the input and the output of the computing device.2 4. Programer under item 1, characterized in that the optical compensator of each channel is made in the form of consecutive positive and negative lenses and a positive lens mounted for movement in a direction perpendicular to the optical axis.2 5. Programer under item 1, characterized in that each of the displacement sensors is made in the form of a multi-turn potentiometer.2 6. Programer under item 2, characterized in that the radiation sources in the form of LEDs, the radiation modulator made in the form of the generator voltage of the two frequency dividers with different conversion factors, and the generator output is connected to the inputs of the frequency dividers, and their outputs are the outputs of the modulator, and each of the control devices made in the form of two filters, two detectors and subtractive device, and the output of each filter is connected to the input of the corresponding detector, the output of each of the detectors with the corresponding subtractive input device and the input filter

 

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