CN109406824B - Resistance comb-shaped target for distinguishing landing fragments and effective landing signal extraction device - Google Patents
Resistance comb-shaped target for distinguishing landing fragments and effective landing signal extraction device Download PDFInfo
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- CN109406824B CN109406824B CN201811607773.0A CN201811607773A CN109406824B CN 109406824 B CN109406824 B CN 109406824B CN 201811607773 A CN201811607773 A CN 201811607773A CN 109406824 B CN109406824 B CN 109406824B
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- 239000012634 fragment Substances 0.000 title claims abstract description 59
- 238000000605 extraction Methods 0.000 title claims description 14
- 230000008859 change Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 16
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000008685 targeting Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001066 destructive effect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000013480 data collection Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
- G01P3/665—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means for projectile velocity measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a resistance comb-shaped target for distinguishing a plurality of landing fragments, which comprises a plurality of parallel grid-shaped electrodes, wherein the grid-shaped electrodes are divided into two groups according to an odd-even sequence, and each odd-numbered grid-shaped electrode in the odd-numbered group is connected with an odd-numbered group end electrode through an odd-numbered resistor; each even grid electrode in the even group of grid electrodes is connected with the end electrode of the even group through an even resistor. The odd-numbered group of terminal electrodes and the even-numbered group of terminal electrodes are connected to a test circuit. According to the invention, the fragment landing signal can be corresponding to the landing fragments, so that the landing signal of a specific fragment is distinguished from the landing signals of other fragments, effective data are obtained from the fragment landing signal, invalid data are removed, and the measurement error of the fragment speed is reduced.
Description
Technical Field
The invention belongs to the field of fragment speed test in explosion damage effect, and particularly relates to a resistance comb-shaped target for distinguishing target fragments and an effective target-adhering signal extraction device.
Background
The breaking speed is an important index for evaluating the explosive damage power of the warhead. The natural fragments generated by the explosion of the warhead have different sizes and different destructive forces. Usually, the small fragments have higher speed than the large fragments, however, the small fragments have limited destructive power and play a significant destructive role. In addition to natural fragments, some warheads are provided with prefabricated fragments, and the speed of the prefabricated fragments needs to be tested in an explosion test to obtain related indexes. However, in the actual test, the speed signal of the natural fragment and the speed signal of the prefabricated fragment are mixed together, and the speed signals of the large fragment and the small fragment are mixed together, so that the test result cannot judge which data are the prefabricated fragments and which data are the large fragments, and invalid data are difficult to reject from the test result, and valid data are difficult to extract. This presents great difficulty in the fragment speed test, and introduces a large error in the test results.
In the field of fragment speed testing, existing measurement means include comb targets, light curtain targets, backdrop targets, and the like. The light curtain target and the backdrop target can roughly distinguish the sizes of the fragments, but cannot distinguish the prefabricated fragments and the natural fragments, are difficult to install and debug, are easily affected by fire light interference, vibration impact and the like on a test site, are difficult to make system protection, have higher cost, and are inconvenient for practical application of an outfield test. The comb-shaped target is more in application due to simple structure and easy installation, but fragments corresponding to each signal cannot be distinguished, invalid data cannot be removed, and errors are larger.
Disclosure of Invention
Aiming at the defects and application requirements of the prior art, the invention provides a resistance comb-shaped target for distinguishing a plurality of landing fragments and an effective landing signal extraction device, which aim to correspond the fragment landing signal to the landing fragment, so that the landing signal of a specific fragment is distinguished from the landing signals of other fragments, effective data are obtained from the fragment landing signal, invalid data are removed, and the measurement error of the fragment speed is reduced.
In order to achieve the above object, the present invention provides a resistive comb-shaped target for distinguishing a plurality of landing fragments, comprising a plurality of parallel grid-shaped electrodes, wherein the grid-shaped electrodes are divided into two groups according to an odd-even sequence, and each odd-numbered grid-shaped electrode in the odd-numbered group is connected with an odd-numbered group end electrode through an odd-numbered resistor; each even grid electrode in the even group of grid electrodes is connected with the end electrode of the even group through an even resistor. The odd-numbered group of terminal electrodes and the even-numbered group of terminal electrodes are connected to a test circuit.
Further, the parallel grid electrodes, the odd-numbered group end electrodes, the even-numbered group end electrodes and the odd-numbered resistors and the even-numbered resistors are manufactured on the printed circuit board.
Specifically, the odd resistors form an odd resistor group, the even resistors form an even resistor group, and the resistors of the odd resistor group and the even resistor group are a series of resistors with gradually changed resistance values, or one group is a gradual change resistor, and the other group is a constant resistor.
Preferably, the gradation resistance is an arithmetic series resistance.
Specifically, the resistive comb-shaped target is square or rectangular in appearance.
The invention also provides an effective target attachment signal extraction device based on the resistance comb-shaped targets for distinguishing the target attachment fragments, which is characterized by further comprising a direct current power supply, a load resistor and data acquisition equipment, wherein the resistance comb-shaped targets are respectively connected with a test circuit through odd-numbered group end electrodes and even-numbered group end electrodes, and are particularly connected with the direct current power supply and the load resistor in series, and the data acquisition equipment is connected with the load resistor in parallel.
The invention relates to a resistance comb-shaped target and an effective target-adhering signal extraction device, wherein the resistance comb-shaped target is connected with a direct current power supply and a load resistor in series through extraction electrodes at two ends. When the broken piece simultaneously hits a part of the two groups of grid-shaped electrodes on the resistance comb-shaped target, the part of the electrodes is conducted, and a voltage value of partial pressure is generated on the load resistance. The serial numbers of the broken pieces hitting the grid-shaped electrodes are different, the number of the hitting grid-shaped electrodes is different, the resistance value of the conducting resistors and the number of the conducting resistors are also different, namely the equivalent resistance values of the conducting resistors on the resistance comb-shaped targets are different, and therefore the voltage values of the partial pressure on the load resistors are also different. The voltage value on the load resistor is acquired and stored by the data acquisition equipment, and the position of the fragments hitting the resistor comb-shaped target and the number of hitting electrodes can be deduced according to the acquired landing voltage signal amplitude on the load resistor, so that the positions of the fragments hitting the resistor comb-shaped target correspond to the fragment perforation on the resistor comb-shaped target, and the landing fragments corresponding to each landing signal can be distinguished. The size of the broken piece can be accurately known according to the size of the broken piece perforation, and whether the broken piece is a natural broken piece with irregular shape or a prefabricated broken piece with regular shape can be distinguished according to the perforation shape, so that effective signals are extracted from the landing signals, and ineffective signals are removed.
Drawings
FIG. 1 is a schematic diagram of a resistive comb target printed circuit of the present invention;
Fig. 2 is a schematic circuit diagram of an effective targeting signal extraction device according to the present invention.
The device comprises a first broken piece, a second broken piece, a 3-direct current power supply, 4-data acquisition equipment, 5-grid electrodes, 51-odd-numbered grid electrodes, 52-even-numbered grid electrodes, 61-odd-numbered end electrodes, 62-even-numbered end electrodes, 7-resistor, 71-odd-numbered resistor, 72-even-numbered resistor and 8-load resistor.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
FIG. 1 is a schematic diagram of a resistive comb-like target printed circuit of the present invention; fig. 2 is a schematic circuit diagram of an effective targeting signal extraction device according to the present invention.
The invention provides a resistance comb-shaped target for distinguishing a plurality of landing fragments, which comprises a plurality of parallel grid-shaped electrodes, wherein the grid-shaped electrodes are divided into two groups according to an odd-even sequence, and each odd-numbered grid-shaped electrode in the odd-numbered group is connected with an odd-numbered group end electrode through an odd-numbered resistor; each even grid electrode in the even group of grid electrodes is connected with the end electrode of the even group through an even resistor. The odd-numbered group of terminal electrodes and the even-numbered group of terminal electrodes are connected to a test circuit. The grid electrodes, the odd-numbered group end electrodes, the even-numbered group end electrodes and the odd-numbered resistors and the even-numbered resistors are arranged on the printed circuit board in parallel. The odd resistors form an odd resistor group, the even resistors form an even resistor group, the resistors of the odd resistor group and the even resistor group are a series of resistors with gradually changed resistance values, or one of the resistors is a gradually changed resistor, the other resistor is a constant resistor, and in the embodiment, the gradually changed resistors are arithmetic series resistors. The resistive comb-shaped target is square or rectangular in shape, and in this embodiment, rectangular.
The invention also provides an effective target attachment signal extraction device based on the resistance comb-shaped targets for distinguishing the target attachment fragments, which further comprises a direct current power supply, a load resistor and data acquisition equipment, wherein the resistance comb-shaped targets are respectively connected to a test circuit through odd-numbered group end electrodes and even-numbered group end electrodes, and are particularly connected in series with the direct current power supply and the load resistor, and the data acquisition equipment is connected in parallel with the load resistor.
In the preferred embodiment of the present invention, as shown in fig. 1, the resistive comb-like target uses a printed circuit board as a target board, and has a plurality of parallel grid-like electrodes in the middle portion thereof, and two lead-out electrodes at each end. The size of the target plate may be 0.5m×0.5m, the width of the gate electrode may be 2mm, and the interval between adjacent electrodes may be 2mm. Among the grid electrodes, the odd-numbered electrodes are a group, and are respectively connected to one extraction electrode, namely an odd-numbered group end electrode, through resistors R 1、R3、R5、……、R2N-1; the electrodes with even numbers are a group, and are respectively connected to the other extraction electrode, namely the end electrode of the even group through a resistor R 2、R4、R6、……、R2N. Let the resistance of resistor R 1、R2、R3、R4、……、R2N-1、R2N be a set of arithmetic series, i.e., R k＝R1+(k-1)Rd, where k=1, 2,3,4, … …,2n, R d are the tolerances of the arithmetic series.
The resistive comb-like target is connected in series with the load resistor R L and the dc power supply V S through its two extraction electrodes (odd-numbered set of terminal electrodes and even-numbered set of terminal electrodes), as shown in fig. 2. When the broken piece hits two or more of the grid-shaped electrodes, the broken piece is made of metal and can conduct electricity, so that the two groups of electrodes are switched from a disconnected state to a conducting state, and the broken piece passes through the target plate and then returns to the disconnected state. In this process, a non-zero divided voltage value is produced across load resistor R L. The number and number of the broken pieces hitting the grid-shaped electrode are different, and the on-resistances of the resistance comb-shaped targets are also different, so that the divided voltages on the load resistors R L are also different, and the corresponding relations are shown in Table 1.
TABLE 1 correspondence between the conditions of a fragment hitting a resistive comb target and the voltage divided by the load resistor
As shown in fig. 2, taking an example that two fragments hit a resistive comb target in succession, a first fragment targets first and a second fragment targets subsequently. Two partial pressure signals of the landing are generated on the load resistor. The target signals are collected and stored through the data collection equipment, and the amplitude and the moment of the target signals are analyzed and read afterwards. By comparing Table 1, it can be seen that the landing positions and rough sizes of the fragments of the two landing signals on the resistive comb-shaped targets. The sizes and the shapes of fragments corresponding to each targeting signal can be distinguished by comparing the fragment holes on the resistor comb-shaped targets, so that the targeting signal of the concerned fragment is extracted, unnecessary targeting signals and interference signals of the fragments are removed, and measurement errors are reduced.
In practical test, several resistance comb targets are set on three circular arcs with explosion center as center to obtain effective data in sufficient quantity. And winding a target wire on the warhead, and providing a target wire voltage signal for the data acquisition equipment to synchronously acquire. When the warhead explodes, the target line is disconnected, the data acquisition equipment acquires a target line disconnection signal, and the moment of disconnection of the target line is taken as zero seconds. The arc radius of the resistance comb-shaped target is the flight distance of the fragment, the time difference between the arrival time of the landing signal and zero second is the flight time of the fragment, the ratio of the flight distance to the flight time is the average speed of the fragment at the distance, and then the group speeds of a plurality of fragments at different flight distances are obtained. As the effective signals are extracted from the landing signals and the ineffective and interference signals are removed, the obtained speed data are effective data, and the measurement error is obviously reduced.
The foregoing is illustrative of a preferred embodiment of the present invention, but the present invention should not be limited to this embodiment and the disclosure of the drawings. So that equivalents and modifications will fall within the scope of the invention, all within the spirit and scope of the invention as disclosed.
Claims (3)
1. The effective target-adhering signal extraction device based on the resistance comb-shaped targets for distinguishing target-adhering fragments is characterized in that the resistance comb-shaped targets comprise a plurality of parallel grid-shaped electrodes, the grid-shaped electrodes are divided into two groups according to odd-even sequences, and each odd-numbered grid-shaped electrode in the odd-numbered groups is connected with an odd-numbered group end electrode through an odd-numbered resistor; each even grid electrode in the even group of grid electrodes is connected with an even group of end electrodes through an even resistor;
The grid electrodes, the odd-numbered group end electrodes, the even-numbered group end electrodes and the odd-numbered resistors and the even-numbered resistors which are parallel are manufactured on the printed circuit board;
the odd resistors form an odd resistor group, the even resistors form an even resistor group, and the resistors of the odd resistor group and the even resistor group are a series of resistors with gradually changed resistance values, or one group is a gradual change resistor, and the other group is a constant resistor;
The comb-shaped resistance target is connected with the direct current power supply and the load resistor in series through the odd-numbered group end electrodes and the even-numbered group end electrodes, and the data acquisition device is connected with the load resistor in parallel.
2. The resistive comb target of claim 1, wherein the graded resistance is an arithmetic series resistance.
3. A resistive comb target according to claim 1 or 2, wherein the resistive comb target has a square or rectangular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607773.0A CN109406824B (en) | 2018-12-27 | 2018-12-27 | Resistance comb-shaped target for distinguishing landing fragments and effective landing signal extraction device |
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| CN201811607773.0A CN109406824B (en) | 2018-12-27 | 2018-12-27 | Resistance comb-shaped target for distinguishing landing fragments and effective landing signal extraction device |
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| CN109406824A CN109406824A (en) | 2019-03-01 |
| CN109406824B true CN109406824B (en) | 2024-08-09 |
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| CN110425937A (en) * | 2019-08-07 | 2019-11-08 | 西安近代化学研究所 | It is a kind of for measure Fragment Group target position and the multi-channel data acquisition unit of target time |
| CN112904043B (en) * | 2021-03-24 | 2022-11-25 | 中北大学 | An impedance conversion target fragment velocity measurement system and its testing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128950A (en) * | 2010-12-20 | 2011-07-20 | 中北大学 | Parallel network target speed test device |
| CN203535235U (en) * | 2013-11-15 | 2014-04-09 | 孙健 | Fragment position signal picking device |
| CN209559916U (en) * | 2018-12-27 | 2019-10-29 | 湖北航天飞行器研究所 | A kind of resistance pectination target that distinguishing target fragmentation and effectively target signal extraction element |
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| DE3431634C1 (en) * | 1984-08-29 | 1986-03-13 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Method and device for producing a signal when a body passes through a contact film |
| JPH09245174A (en) * | 1996-03-12 | 1997-09-19 | Toshiba Corp | Individual authenticating device |
| FR2789485A1 (en) * | 1999-02-05 | 2000-08-11 | Denis Belleville | Military day/night vision test card calibration system having chess board pattern electrical conducting material modules fed by electrode connected to voltage generator |
| CN1955632A (en) * | 2005-10-28 | 2007-05-02 | 揭雪强 | Firing target automatic score apparatus |
| CN101452123B (en) * | 2007-12-07 | 2010-09-22 | 北京京东方光电科技有限公司 | Substrate test circuit |
| CN104034859B (en) * | 2014-04-23 | 2016-01-13 | 西安近代化学研究所 | Explosive charge drives the measurement mechanism of metal ability |
| CN109029133A (en) * | 2018-08-16 | 2018-12-18 | 厦门大学 | A kind of hit telling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128950A (en) * | 2010-12-20 | 2011-07-20 | 中北大学 | Parallel network target speed test device |
| CN203535235U (en) * | 2013-11-15 | 2014-04-09 | 孙健 | Fragment position signal picking device |
| CN209559916U (en) * | 2018-12-27 | 2019-10-29 | 湖北航天飞行器研究所 | A kind of resistance pectination target that distinguishing target fragmentation and effectively target signal extraction element |
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