RU2790534C1 - Projectile speed and coordinates measuring device - Google Patents

Abstract

FIELD: electrical measurement technology.

SUBSTANCE: invention relates to electrical measurement technology. Projectile speed and coordinates measuring device consists of emitter unit, photodetector unit and control unit, the output of which is connected to the control input of the calculator unit, the information output of which is connected to the information input of the information output module, in addition, a power supply is introduced, one output of which is connected to the power input of the calculator unit, and the other two outputs are connected to the power inputs of the emitter unit, logic unit, the information inputs of which are connected to the information outputs of the photodetector unit, the information inputs are connected to the information outputs of the photodetector unit, the control input of the logic unit is connected to the output of the control unit, the information outputs of the logic unit are connected to the information inputs of the calculation unit, and the information outputs are connected to the information inputs of the information output module.

EFFECT: invention reduces the time required to perform measurement and to improve the device operation information content.

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Description

The invention relates to the field of electrical engineering and can be used to measure the linear speed and coordinates of the projectile body.

A device for measuring the speed of a moving body is known, containing two spaced sensors in the form of electrical contacts that close the electrical circuit. These contacts are made movable and mounted on flexible plates, on which elastic petals mounted at the boundaries of the base distance rest, which, when exposed to a moving body, interact with the flexible contact plates and close them, the first pair of contacts, when closed, includes a measuring device, for example, a frequency meter, and the second one turns it off [1].

The disadvantage of analog is the low measurement accuracy due to the presence of mechanical contacts, the inability to determine the coordinates when the sensors are triggered.

A device for measuring the speed of a projectile body is known, containing two spaced sensors and two measuring devices associated with the outputs of the sensors. Each of the sensors is made in the form of two perpendicular arrays of emitting diodes and arrays of photodetectors. All elements of the device are interconnected in a certain way. In this case, the logic block consists of a matrix of elements "AND", a matrix of triggers and an indication block [2].

The disadvantage of this device is the fact that when measuring the parameters of a high-speed missile body (over 300 m/s) with a given accuracy, it is required to separate the sensors over a sufficiently long distance and, as a result, requires the measurement of coordinates in two planes, which leads to structural redundancy and complication devices.

The closest in essence to the claimed is a known device for measuring the speed of a moving body, which contains a measuring device associated with the output of the sensor, made in the form of a laser emitter and a photodetector. The measuring device includes an amplifier-shaper, a logic element "AND", a pulse generator of a reference frequency, a binary counter, a digital computing device and a digital readout device, as well as a control unit and a throwing device [3].

The disadvantage of the closest analogue (prototype) is:

long measurement time due to the need to search and enter data on the initial speed and length of the thrown body;

the inability to determine the coordinates of the thrown body in the presence of one emitter and one photodetector.

The technical result of the invention is:

reduction of measurement time;

the possibility of using the device without reference information about the initial speed and length of the moving body;

increasing the information content of the results of the device operation by determining the coordinates of the moving body.

The technical result is achieved by the fact that in a known device for determining the speed and coordinates of a missile body, containing emitters and a photodetector, between which the missile body moves, the control unit, the output of which is connected to the control input 4.5 of the calculation unit, the information input of which is connected to the information input 5.1 of the module information output, a power source and a logic block are additionally introduced, the first output of the power source is connected to the input 7.1 of the calculation block, and the second and third outputs, respectively, to the first input 1.1.1 and the second input 1.2.1 of the emitter block, logic block, information inputs 3.6. 1-3.6.N of which are connected to the information outputs 2.1.1-2.1.N of the photodetector block, and the information inputs 3.5.1-3.5.M are connected to the information outputs 2.2.1-2.2.M of the photodetector block, the control input 3.4 of the logic block is connected to the output of the control unit, which is also connected to the control input 4.5 of the calculation unit, the first and second outputs of the block the eyes of the logic are respectively connected to the second and third inputs of the calculation unit, and the information outputs 3.3.1-3.3.L are connected respectively to the information inputs 5.2.1-5.2.L of the information output module.

The block of emitters consists of two lines of radiation sources located perpendicular to each other, and the input of the first line of emitters is the first input of the block of emitters, the input of the second line of emitters is, respectively, the second input of the block of emitters.

The block of photodetectors consists of two lines of photodetectors located perpendicular to each other, and outputs 1-N of the first line of photodetectors are information inputs 2.1.1-2.1.N of the block of photodetectors, outputs 1-M of the second line of photodetectors are information outputs 2.2.1-2.2. M block of photodetectors.

The first line of radiation sources of the emitter block and the first line of photodetectors of the photodetector block are located parallel to each other and form the first sensor, similarly the second lines of radiation sources of the emitter block and photodetectors of the photodetector block are located parallel to each other and form the second sensor.

The logic block consists of a matrix of AND elements, a matrix of triggers, NOT and OR elements, and the first inputs of the matrix of AND elements are connected respectively to the information inputs 3.6.1-3.6.N of the logic block through NOT elements and are simultaneously inputs of the OR element 1, the output of which is the first output of the logic block, and the second inputs are connected respectively to the information inputs 3.5.1-3.5.M of the logic block through NOT elements and are simultaneously inputs of the OR 2 element, the output of which is the second output of the logic block, and the outputs of the AND elements are connected to the trigger inputs, the outputs of which are, respectively, the information outputs 3.3.1-3.3.L of the logic block.

The calculation block consists of a gate pulse generator, the first input of which is the first input of the calculation block, and the second input of which is the control input of the calculation block, the AND element, the first input of which is connected to the output of the gate pulse generator, the second to the output of the RS-trigger, the first and second the input of which is the second and third input of the calculation block, respectively, the output of the AND element is connected to the first input of the binary counter, the second input of which is the control input of the calculation block, the output of the binary counter is connected to the first input of the computing device, the output of which is the output of the calculation block.

Thanks to a new set of essential features, by introducing a power source and a logic unit that receives information from two lines of photodetectors (two sensors), it is possible to use the device without reference information about the initial speed and length of the moving body, as well as increasing the information content of the results of the device by determining the coordinates moving body.

The claimed device for determining the speed and coordinates of the projectile body is illustrated by drawings, which show:

fig. 1 - general block diagram of the device;

fig. 2 - block diagram of the block of emitters and photodetectors;

fig. 3 - block diagram of the logic block;

fig. 4 is a block diagram of the calculation block.

The claimed device for determining the speed and coordinates of the projectile body presented in (Fig. 1) consists of a block of emitters 1 (BI) and a block of photodetectors 2 (BF), between which the projectile body moves, and the outputs 2.1.1-2.1.N BF 2 are connected to the information inputs 3.6.1-3.6.N of the logic block 3 (BL), and the outputs 2.2.1-2.2.M BF 2 are connected to the information inputs 3.5.1 ... 3.5.M BL 3, the control input 3.4 BL 3 is connected to output 6.1 of the control unit 6 (CU), which is also connected to the control input 4.5 of the calculation unit 4 (BV), the outputs 3.1 and 3.2 of the BL 3, respectively, are connected to the inputs 4.2 and 4.3 of the CU 4, and the information outputs 3.3.1 ... 3.3.L of the BL 3 are connected, respectively, to the information inputs 5.2.1 ... 5.2.L of the information output module 5 (MVI), the information input 5.1 of which is connected to the information output 4.4 BV 4, the power input 4.1 BV 4 is connected to the output 7.1 of the power supply 7 (IP), the outputs 7.2 and 7.3 of which are connected respectively to the inputs 1.1.1 and 1.2.1 BI 1.

BI 1 and BF 2, the block diagram of which is shown in Fig. 2 are made respectively in the form of perpendicularly arranged lines of emitters and photodetectors, which act as sensors, between which the projectile body moves and its non-contact fixation is provided, due to a change in the signal at the sensor output. The thrown body can be made of any material and have any shape, and the size of the thrown body must exceed the distance between two elements of the array of emitters (photodetectors). A variant of constructing such sensors is known and described, for example, in the patent [2] in Fig. 1.

Mass-produced domestic models made in accordance with GOST P 51846-2001 “Solid-state lasers and emitters of solid-state lasers for devices of wide application” can be used as radiating elements. General technical conditions ”or serially produced domestic models of LEDs of the AL 307 AM series, connected through a current-limiting resistor of 1 kOhm.

BL 3, the block diagram of which is shown in Fig. 3 is designed to register the movement of the thrown body, determine and store its coordinates.

Commercially produced domestic models 1533 LI 1 or imported analogues of SN 74 AMC can be used as two-input AND elements, commercially produced domestic models 1533 LN 1 or imported analogues of SN 7406N can be used as an OR element, model 100LL110 can be used as an OR element.

BV 4, the block diagram of which is shown in Fig. 4 is designed to process the results received from the logic block and calculate the speed of the projectile body.

As an RS trigger, a commercially available domestic model K561TP2 can be used.

MVI 5 is a digital device implemented on liquid crystal or LED indicators, which receives a signal proportional to the speed of the projectile, from the BV 4 and data on the coordinates from the BL 3.

BU 6 is designed to generate a control signal to turn on BV 3 (resetting the binary counter and turning on the strobe pulse generator), transferring triggers to the zero state of BL 3.

IP 7 is a source of electricity for the generator of strobe pulses and lines of emitters.

The elements included in the considered BL, BV, BI, BF, BU, MVI elements are known and described respectively in [4, 5].

Description of the device

The operation of the device begins with the fact that at the command "START" in BU 6 a single pulse is formed, which simultaneously arrives at the control input 3.4 BL 3 and resets all its triggers 3.1.1.1 ... 3.2.M.N, and at the control input 4.5 "turn on" BV 4 , resetting the binary counter 4.2 and starting the strobe generator 4.1.

The thrown body is thrown (thrown) in the direction of BI 1 and BF 2. When the thrown body crosses the beam of the n-th (n ∈ 1 ... N) emitter of the first pair of the line of the radiation source BI 1 and the photodetector BF 2, the signal from this pair is interrupted by n- th information output BF 2 and n-th information input BL 3, after which, through the n-th element NOT BL 3 simultaneously arrives at the first inputs of the elements AND 3.1.1.n ... 3.1.M.n and the n-th input of the element OR 1 , from the output of which the signal goes to the input 4.2 BV 4, which is the first input 4.10.1 of the RS-trigger 4.10, from the output 4.10.3 of the RS-trigger 4.10 the signal goes to the second input 4.7.2 of the element And 4.7, from the output of which 4.7.3 the signal is fed to the input 4.8.1 binary counter 4.8, which starts counting the strobe pulses from the generator 4.6.

Further, the projectile crosses the beam of the m-th (m ∈ 1 ... M) emitter of the second pair of the line of the radiation source BI 1 and the photodetector BF 2, which causes an interruption of the signal from this pair at the m-th information output of the BF 2 and the m-th information input of the BL 3, after which, through the m-th element NOT BL 3, it simultaneously enters the second inputs of the elements AND 3.1.m.1 ... 3.1.m.N and the m-th input of the element OR 2, from the output of which the signal enters the second input 4.10.2. RS-trigger 4.10, which leads to the termination of the signal from the output 4.10.3 of the RS-trigger 4.10 and the termination of the binary counter 4.8, which transmits the total number of pulses to the input of the computing device 4.9, which calculates the speed of flight of the projectile body by multiplying the number of strobe pulses by their interval, the calculated speed is transmitted to the information input 5.1 MVI 5.

The signals arriving at the inputs (3.5.1…3.5.M) and the inputs (3.6.1…3.6.N) correspond to the coordinates of the flight of the projectile relative to the first (1.1 and 2.1) and second (1.2 and 2.2) pairs of lines of radiation sources BI 1 and photodetectors BF 2 and cause the operation of the element AND 3.1.m.n from the matrix of elements AND (3.1.1.1 ... 3.1.M.N) BL 3, the signals from the output of which lead to the activation of the corresponding trigger 3.2.m.n from the matrix of triggers (3.2.1.1 ... 3.2. M.N) BL 3. The signal from the output of which will go to the corresponding output (3.3.1 ... 3.3.L) of BL 3, connected to the corresponding input (5.2.1 ... 5.2.L) of MVI 5 and provide an indication of the coordinates of the projectile body.

After the missile body passes the second pair of the line of the BI radiation source and the BF photodetector, one is recorded in the trigger 3.2.m.n, the signal from the information outputs 3.3.1-3.3.L (L=NxM) of the BL 3 is fed to the information inputs 5.2.1-5.2.L MVI 5.

Information sources

1. RF patent for the invention No. 2216025, class. G01P 3/66, publ. 11/10/2003.

2. RF patent for the invention No. 2285267, class. G01P 3/66, publ. 10.10.2006.

3. RF patent for the invention No. 2366960, class. G01P 3/66, publ. 09/10/2009.

4. Shilo V.L. Popular CMOS Chips: A Handbook. - M.: Hot line - Telecom, 2001. - 112 p. (Mass Radio Library; Issue 1246).

5. Mikushin A.V., Sazhnev A.M., Sedinin V.I. Digital devices and microprocessors. - St. Petersburg: BHV - Petersburg, 2010. - 832 p.

Claims (5)

1. A device for measuring the speed and coordinates of a projectile body, containing a block of emitters (1), a block of photodetectors (2) and a control unit (6), the output (6.1) of which is connected to the control input (4.5) of the calculation unit (4), information output (4.4) of which is connected to the information input (5.1) of the information output module (5), characterized in that a power source (7) is additionally introduced, the output (7.1) of which is connected to the power input (4.1) of the calculation unit (4), and the outputs (7.2 and 7.3), respectively, to the power inputs (1.1.1 and 1.2.1) of the emitter unit (1), the logic unit (3), the information inputs (3.6.1…3.6.N) of which are connected to the information outputs (2.1.1 ...2.1.N) of the photodetector block (2), information inputs (3.5.1...3.5.M) are connected to information outputs (2.2.1...2.2.M) of the photodetector block (2), control input (3.4) of the logic block (3 ) is connected to the output (6.1) of the control unit (6), the information outputs (3.1 and 3.2) of the logic unit (3) are connected respectively to the information inputs (4.2 and 4.3) of the calculation block (4), and the information outputs (3.3.1...3.3.L) are connected respectively to the information inputs (5.2.1...5.2.L) of the information output module (5). 2. The device according to claim 1, characterized in that the block of emitters (1) consists of the first (1.1) and second (1.2) lines of radiation sources located perpendicular to each other, and the power input of the first line of emitters (1.1) is the first power input (1.1.1) of the emitter block (1), the power input of the second line of emitters (1.2) is, respectively, the second power input (1.2.1) of the emitter block (1). 3. The device according to claim 1, characterized in that the block of photodetectors (2) consists of the first (2.1) and second (2.2) lines of photodetectors located perpendicular to each other, and the information outputs (1 ... N) of the first line of photodetectors (2.1) are information outputs (2.1.1...2.1.N) of the photodetector unit (2), outputs (1...M) of the second line (2.2) of photodetectors are information outputs (2.2.1...2.2.M) of the photodetector unit (2). 4. The device according to claim 1, characterized in that the logic block (3) consists of elements NOT, OR 1 and 2, a matrix of elements AND (3.1.1.1 ... 3.1.M.N), a matrix of triggers (3.2.1.1 ... 3.2.M.N ), and the first inputs of the matrix of elements AND (3.1.1.1 ... 3.1.M.N) are connected respectively with the information inputs (3.6.1 ... 3.6.N) of the logic block (3) through the elements NOT and are simultaneously the inputs of the element OR 1, the second inputs of the matrix elements AND (3.1.1.1…3.1.M.N) are connected to information inputs (3.5.1…3.5.M) of logic block (3) through NOT elements and are simultaneously inputs of element OR 2, outputs of matrix of elements AND (3.1.1.1…3.1 .M.N) are connected to the inputs of triggers (3.2.1.1…3.2.M.N), the outputs of which (3.3.1…3.3.L) are connected to the information output module (5), and the outputs of the OR elements 1 and 2 are, respectively, information outputs (3.1 and 3.2) logic block (3). 5. The device according to claim 1, characterized in that the calculation unit (4) consists of a gating pulse generator (4.6), the control input (4.6.1) of which is the control input (4.5) of the calculation unit (4), and the power input ( 4.6.3) is the power input (4.1) of the calculation unit (4), element AND (4.7), the first information input (4.7.1) of which is connected to the information output (4.6.2) of the gating pulse generator (4.6), and its second information input (4.7.2) to the first information output (4.10.3) of the RS flip-flop (4.10), the first (4.10.1) and second (4.10.2) information inputs of which are, respectively, the information inputs (4.2 and 4.3) of the calculation block (4), the information output (4.7.3) of the AND element (4.7) is connected to the information input (4.8.1) of the binary counter (4.8), the control input (4.8.2) of which is connected to the control input (4.5) of the calculation block (4 ), the information output (4.8.3) of the binary counter (4.8) is connected to the information input (4.9.1) of the calculator (4.9), and whose information output (4.9.2) is the information output (4.4) of the calculation block (4).

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