CN104793012A - Instrument for measuring explosive velocities - Google Patents
Instrument for measuring explosive velocities Download PDFInfo
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- CN104793012A CN104793012A CN201510175274.9A CN201510175274A CN104793012A CN 104793012 A CN104793012 A CN 104793012A CN 201510175274 A CN201510175274 A CN 201510175274A CN 104793012 A CN104793012 A CN 104793012A
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Abstract
The invention relates to an instrument for measuring explosive velocities. The instrument comprises a plurality of probes with photosensitive diodes and a crystal oscillation timer with an LED display screen. Each probe with the photosensitive diode comprises the photosensitive diode and a probe circuit, one end of each probe circuit is connected with the corresponding photosensitive diode by an enameled wire, the multiple probes with the photosensitive probes are sequentially fixed to the surface of an explosive column along the axial direction of the explosive column, a photosensitive surface of each photosensitive diode clings to the surface of the explosive column, light-tight black insulating rubber tapes completely wrap the photosensitive diodes on the surface of the explosive column, a plurality of acquisition interfaces are arranged on the crystal oscillation timer and are respectively connected with leg wires of the enameled wires by cables, and the leg wire of each enameled wire is arranged at the other end of the corresponding probe circuit. The instrument has the advantages that change of the density and mechanical packaging states of the explosive column can be prevented, the instrument is high in electromagnetic interference resistance and convenient to mount and can be used for measuring the explosive velocities when explosive explodes in underwater environments, and the adhesion positions of the instrument can be flexibly changed.
Description
Technical field
The present invention relates to a kind of instrument measuring explosion velocity of explosive, particularly relate to a kind of can electromagnetism interference and measure the equipment of explosive explosion velocity under water.
Background technology
At present, the conventional measuring method of explosion velocity of explosive has three kinds: High Speed Photography, primacord fuse method and electrical measuring method (sonde method).High Speed Photography shortcoming is that instrumentation is complicated, and instrument and equipment is expensive, and test condition requires higher, only just can complete in special laboratory; Primacord fuse method measuring accuracy depends on the explosion velocity value of primacord fuse therefore measuring accuracy is inadequate, and automaticity is low, not easily objectively describes the problem; Electrical measuring method cannot determine the exact position ionized, and then accurately can not determine the starting and ending time of timing, have a strong impact on measuring accuracy, and electric probe is difficult to gather to weakly ionized signal when electromagnetic interference (EMI) is strong, because electric probe is subject to the interference of external electromagnetic field, particularly in detonation test, the degree of ionization of detonation product is higher, makes it cannot use in strong electromagnetic environment.Easily destroy powder stick virgin state when tradition is threaded a needle, medicine volume density is changed, particularly the powder stick of plastic film packaging, range relative error is comparatively large, causes test result precision to reduce.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of to be measured precisely, easy for installation, safe and reliable, with low cost and can measure the instrument of underwater explosion velocity of explosive.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of instrument measuring explosion velocity of explosive, comprise multiple photodiode probe and crystal oscillator timer, each described photodiode probe includes photodiode and probe circuit, one end of described probe circuit is connected by enameled wire with described photodiode, enameled wire diameter is preferably 0.5mm, multiple described photodiode is fixed on the surface of described explosive column successively along the axis direction of explosive column, the light-sensitive surface of each described photodiode is all close on the surface of described explosive column, described crystal oscillator timer is provided with multiple acquisition interface, multiple described acquisition interface is connected by cable with the enameled wire payment to a porter of the described probe circuit other end respectively.
Preferably, by lighttight black insulating tape, described photodiode is wrapped in completely the surface of described explosive column, makes the described photodiode light-sensitive surface being only close to described explosive column surface to receive light source irradiation.
Preferably, multiple described photodiode is positioned on the same straight line of described explosive column outside surface.
Preferably, multiple described photodiode is symmetrically distributed in the both sides of described explosive column outside surface centered by described explosive column axis, and the described photodiode of both sides lays respectively on same straight line.
Preferably, multiple described photodiode is that specification is identical, batch identical photodiode.
Preferably, described crystal oscillator timer is connected with the LED display for reading chronometric data, and it is 50 ~ 100MHZ clock crystal oscillator that described crystal oscillator timer is preferably crystal oscillator frequency.
Based on technique scheme, the invention has the beneficial effects as follows: photodiode probe of the present invention is pasted onto the outside surface of explosive column by black friction tape, do not need the virgin state destroying explosive column, avoid grain density and mechanical encapsulation state to change; And electromagnetism interference is strong, accurately light source can be caught when weakly ionized or dense ionization; The paste position of probe can also be changed flexibly, easy for installation, and with low cost, can be used to explosion velocity when measuring explosive underwater blast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is crystal oscillator timer operation schematic diagram of the present invention
Fig. 3 is the oscillogram of crystal oscillator timer of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, explosive column, 2, photodiode, 3, enameled wire, 4, acquisition interface, 5, crystal oscillator timer.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment one:
As shown in Figure 1, a kind of instrument measuring explosion velocity of explosive, comprise crystal oscillator timer 5 and seven photodiode probes, each described photodiode probe includes photodiode 2 and probe circuit, one end of described probe circuit is connected by enameled wire 3 with described photodiode 2, enameled wire 3 diameter is preferably 0.5mm, and described photodiode 2 is fixed on the surface of described explosive column 1 successively along the axis direction of explosive column 1.The light-sensitive surface of each described photodiode 2 is all close on the surface of described explosive column 1, by lighttight black insulating tape, described photodiode 2 is wrapped in completely the surface of described explosive column 1, makes the light-sensitive surface of the described photodiode 2 being only close to described explosive column 1 surface to receive light source irradiation.Seven described photodiodes 2 are that specification is identical, batch identical photodiode.
Described crystal oscillator timer 5 is connected with the LED display for reading chronometric data, and it is 50 ~ 100MHZ clock crystal oscillator that described crystal oscillator timer 5 is preferably crystal oscillator frequency.Described crystal oscillator timer 5 is provided with seven acquisition interface 4, and enameled wire 3 payment to a porter of the probe circuit other end described with seven is connected by cable respectively.
Described explosive column 1 is the cylindrical explosive that surperficial precision of being wrapped up by plastic sheeting press-fits.Seven described photodiodes 2 are all positioned on the same straight line of described explosive column 1 outside surface, and utilize the distance L between adjacent two photodiodes 2 of vernier caliper measurement, the span of preferred L is preferably 30mm-55mm, and is labeled as L1 ~ L6 successively.In order to record more precise results, adjacent L value is all set to different value.
Fig. 2, Fig. 3 is the timing principles of crystal oscillator timer, described crystal oscillator timer 5 is provided with seven pairs of target line input acquisition interface 4, be labeled as A1 ~ A7 respectively, during measurement, the pulse signal of A1 target line is through the first controlled stage, first counting door is opened, first paragraph counter starts timing, when A2 input port receives the pulse signal of second pair of target line, second controlled stage closes the first counting door, first paragraph counter stops counting, and count to obtain time t1, open the second counting door simultaneously, start to count the second segment time, by that analogy, record six sections of time t1 ~ t6 successively, and will show on a display screen between institute's timing successively by simple operations, for reading chronometric data.
Utilize time of recording and spacing data, using formula v=L/t, the average explosion velocity v1 ~ v6 in each neighboring photosensitive diode 2 spacing can be calculated to obtain successively.Also six average explosion velocities can be averaged, the average explosion velocity of whole explosive column 1 can be obtained.
Embodiment two:
Measure an instrument for explosion velocity of explosive, except the number of the described photodiode 2 of explosive column 1 outside surface and distributing position are different from except embodiment one, other structure and parameters are all identical with embodiment one.
Multiple described photodiode 2 is symmetrically distributed in the both sides of described explosive column 1 outside surface centered by described explosive column 1 axis, and 3 ~ 4 photodiodes 2 are preferably established in every side, and the described photodiode 2 of both sides lays respectively on same straight line.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. measure the instrument of explosion velocity of explosive for one kind, it is characterized in that: comprise multiple photodiode probe and crystal oscillator timer, each described photodiode probe includes photodiode and probe circuit, one end of described probe circuit is connected by enameled wire with described photodiode, multiple described photodiode is fixed on the surface of described explosive column successively along the axis direction of explosive column, the light-sensitive surface of each described photodiode is all close on the surface of described explosive column, described crystal oscillator timer is provided with multiple acquisition interface, multiple described acquisition interface is connected by cable with the enameled wire payment to a porter of the described probe circuit other end respectively.
2. a kind of instrument measuring explosion velocity of explosive according to claim 1, is characterized in that, by lighttight black insulating tape, described photodiode is wrapped in completely the surface of described explosive column.
3. a kind of instrument measuring explosion velocity of explosive according to claim 1, is characterized in that, multiple described photodiode is positioned on the same straight line of described explosive column outside surface.
4. a kind of instrument measuring explosion velocity of explosive according to claim 1, it is characterized in that, multiple described photodiode is symmetrically distributed in the both sides of described explosive column outside surface centered by described explosive column axis, and the described photodiode of both sides lays respectively on same straight line.
5. a kind of instrument measuring explosion velocity of explosive according to claim 1, is characterized in that, multiple described photodiode is that specification is identical, batch identical photodiode.
6., according to described a kind of instrument measuring explosion velocity of explosive arbitrary in claim 1 to 5, it is characterized in that, described crystal oscillator timer is connected with the LED display for reading chronometric data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175274.9A CN104793012B (en) | 2015-04-13 | 2015-04-13 | A kind of instrument for measuring explosion velocity of explosive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175274.9A CN104793012B (en) | 2015-04-13 | 2015-04-13 | A kind of instrument for measuring explosion velocity of explosive |
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| CN104793012A true CN104793012A (en) | 2015-07-22 |
| CN104793012B CN104793012B (en) | 2017-08-25 |
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| CN201510175274.9A Expired - Fee Related CN104793012B (en) | 2015-04-13 | 2015-04-13 | A kind of instrument for measuring explosion velocity of explosive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548598A (en) * | 2015-12-11 | 2016-05-04 | 安徽理工大学 | Auxiliary device for measuring detonation speed of slurry explosive |
| CN105652029A (en) * | 2015-12-08 | 2016-06-08 | 安徽理工大学 | Explosive explosion speed test system and method thereof |
| CN105928425A (en) * | 2016-07-07 | 2016-09-07 | 宏大矿业有限公司 | Detonating speed measuring device and method of detonating fuse |
| CN108871118A (en) * | 2018-07-17 | 2018-11-23 | 湖北三江航天红林探控有限公司 | A kind of explosion velocity of explosive multipoint acquisition system and its application method |
| CN110768685A (en) * | 2019-09-23 | 2020-02-07 | 四川航天川南火工技术有限公司 | Ionization signal receiver, preparation tool, preparation method and testing system of initiating device |
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| US3528280A (en) * | 1968-11-27 | 1970-09-15 | Us Army | Apparatus and method for measuring detonation velocities in explosives |
| US3572095A (en) * | 1969-04-09 | 1971-03-23 | Us Army | Apparatus for measuring detonation velocities in explosives |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105652029A (en) * | 2015-12-08 | 2016-06-08 | 安徽理工大学 | Explosive explosion speed test system and method thereof |
| CN105652029B (en) * | 2015-12-08 | 2018-11-06 | 安徽理工大学 | Explosive charge speed testing system and method |
| CN105548598A (en) * | 2015-12-11 | 2016-05-04 | 安徽理工大学 | Auxiliary device for measuring detonation speed of slurry explosive |
| CN105928425A (en) * | 2016-07-07 | 2016-09-07 | 宏大矿业有限公司 | Detonating speed measuring device and method of detonating fuse |
| CN108871118A (en) * | 2018-07-17 | 2018-11-23 | 湖北三江航天红林探控有限公司 | A kind of explosion velocity of explosive multipoint acquisition system and its application method |
| CN110768685A (en) * | 2019-09-23 | 2020-02-07 | 四川航天川南火工技术有限公司 | Ionization signal receiver, preparation tool, preparation method and testing system of initiating device |
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|---|---|
| CN104793012B (en) | 2017-08-25 |
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