CN206515363U - A kind of explosion velocity measuring instrument calibrating installation - Google Patents
A kind of explosion velocity measuring instrument calibrating installation Download PDFInfo
- Publication number
- CN206515363U CN206515363U CN201621382300.1U CN201621382300U CN206515363U CN 206515363 U CN206515363 U CN 206515363U CN 201621382300 U CN201621382300 U CN 201621382300U CN 206515363 U CN206515363 U CN 206515363U
- Authority
- CN
- China
- Prior art keywords
- terminals
- positive
- measuring instrument
- explosion velocity
- velocity measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model discloses a kind of explosion velocity measuring instrument calibrating installation, including two positive-negative-positive transistors, the emitter stage of one of positive-negative-positive transistor is drawn out to terminals F and base stage is drawn out to terminals E, the emitter stage of another positive-negative-positive transistor is drawn out to terminals G and base stage is drawn out to terminals H, and it is in series with potentiometer before terminals G, two colelctor electrode short circuits of two positive-negative-positive transistors are followed by earth terminal GND, terminals F and earth terminal GND are respectively used to connect the initiating terminal A and initiating terminal B of explosion velocity measuring instrument, terminals G and earth terminal GND are connected respectively to the clearing end C and clearing end D of explosion velocity measuring instrument, terminals E and terminals H are all connected to waveform generator.The utility model simulates the initial signal and termination signal of explosion velocity measuring instrument, realizes the calibration to the time interval measurement of explosion velocity measuring instrument, calibration range is wide, calibration accuracy is high, and calibration reliability is high, also with it is simple in construction, easy to detect, cost is low the characteristics of.
Description
Technical field
The utility model belongs to explosion velocity measuring instrument collimation technique field, is related to a kind of explosion velocity measuring instrument calibrating installation.
Background technology
Explosion velocity refers to the speed that the detonation wave produced during explosive charge is propagated, and it is the important finger for weighing explosion properties
Mark.The time keeping instrument that explosion velocity measuring instrument is made up of explosive time-measuring gauge, electric probe, transmission line.It is to determine detonation using electric probe
The time interval that ripple is propagated in certain density, certain length explosive.Detonation velocity calculating formula presses GJB 772.304-91《Explosive is tried
Proved recipe method solid explosive explosion velocity determines electrical measuring method》The regulation of formula (3) is carried out.Explosion velocity measuring instrument also measurable other high-speed motions
The time interval or speed of object.With measurement accuracy height, performance stabilization, strong antijamming capability, it is easy to operate many advantages, such as,
With wide applicability.
Explosion velocity measuring instrument front panel typical structure is as shown in figure 1, there is 4 binding posts, and A and B are initiating terminal, and C and D are stopping
End, B and D are connected together as common port.Operation principle is：Start timing when A and B short circuits, stop when C and D short circuits
Timing, apparatus measures when known to explosive length, are calculated from timing is started to the time interval stopped timing by formula
Go out explosion velocity.
At present, the key technical indexes of typical explosion velocity measuring instrument is：Ticking frequency nominal value is 10MHz, and the degree of accuracy is excellent
In 4 × 10-5 ；Range setting range is 1mm~9.999m；Time interval measurement scope is 0.1 μ s~65s；The scope that tests the speed is
0m/s~9.999km/s.
With the development of science and technology, the parameter index more and more higher such as the measurement range of explosion velocity measuring instrument, measurement accuracy, it is existing
With the presence of explosion velocity measuring instrument prover calibration range is narrow, the low problem of precision, calibration requirements can not be met.
The content of the invention
The technical problems to be solved in the utility model is：A kind of explosion velocity measuring instrument calibrating installation is provided, output time is improved
The precision at interval, calibration range is wider, to solve the deficiencies in the prior art.
The technical scheme that the utility model is taken is：A kind of explosion velocity measuring instrument calibrating installation, including two positive-negative-positive crystal three
Pole pipe, the emitter stage of one of positive-negative-positive transistor is drawn out to terminals F and base stage is drawn out to terminals E, another
The emitter stage of positive-negative-positive transistor is drawn out to terminals G and base stage is drawn out to terminals H, and is in series with before terminals G
Potentiometer, two colelctor electrode short circuits of two positive-negative-positive transistors are followed by earth terminal GND, terminals F and earth terminal GND difference
Initiating terminal A and initiating terminal B for connecting explosion velocity measuring instrument, terminals G and earth terminal GND are connected respectively to explosion velocity measuring instrument
Clearing end C and clearing end D, terminals E and terminals H are all connected to function generator/waveform generator.
It is preferred that, above-mentioned function generator/waveform generator uses 33250A type functions/AWG.
It is preferred that, above-mentioned terminals E, terminals F, terminals G and terminals H ends are BNC type joints.
The beneficial effects of the utility model：Compared with prior art, the utility model passes through a potentiometer and two PNP
Type transistor simultaneously connects waveform generator and may make up whole calibrating installation, by using the pulse voltage of waveform generator
Signal controls saturation conduction and the cut-off of two positive-negative-positive transistors, the initial signal of simulated implementation explosion velocity measuring instrument and
Termination signal, so as to realize the calibration of the time interval measurement to explosion velocity measuring instrument, calibration range is wide, calibration accuracy is high, calibration
Reliability is high, solves the problem of prior art calibration range is narrow, precision is low, and the utility model also has simple in construction, detection
Conveniently, the characteristics of cost is low.
Brief description of the drawings
Fig. 1 is the sectional view of test fixture metallic cavity of the present utility model；
Fig. 2 is that Fig. 1 is the utility model structural representation；
Fig. 3 is the single pulse signal voltage waveform signal that the utility model function generator/AWG is produced
Figure.
Embodiment
Below in conjunction with the accompanying drawings and utility model is described further specific embodiment.
Implement 1：As illustrated in the accompanying drawings from 1 to 3, a kind of explosion velocity measuring instrument calibrating installation, including two positive-negative-positive transistors, its
In the emitter stage of a positive-negative-positive transistor be drawn out to terminals F and base stage is drawn out to terminals E, another positive-negative-positive is brilliant
The emitter stage of body triode is drawn out to terminals G and base stage is drawn out to terminals H, and is in series with potentiometer before terminals G,
Two colelctor electrode short circuits of two positive-negative-positive transistors are followed by earth terminal GND, terminals F and earth terminal GND and are respectively used to connection
The initiating terminal A and initiating terminal B of explosion velocity measuring instrument, terminals G and earth terminal GND are connected respectively to the clearing end C of explosion velocity measuring instrument
Function generator/waveform generator is all connected to clearing end D, terminals E and terminals H.
It is preferred that, above-mentioned function generator/waveform generator uses 33250A type functions/AWG.
It is preferred that, above-mentioned terminals E, terminals F, terminals G and terminals H ends are BNC type joints.
Embodiment 2：As shown in Fig. 2 a kind of time interval measurement calibration method of explosion velocity measuring instrument, this method includes following
Step：
Step 1, the initiating terminal A of explosion velocity measuring instrument and initiating terminal B are respectively coupled to the terminals F of explosion velocity measuring instrument calibrating installation
With terminals GND；The clearing end C and clearing end D of explosion velocity measuring instrument be respectively coupled to explosion velocity measuring instrument calibrating installation terminals G and
Terminals GND；
Step 2, in terminals E the pulse voltage signal that a positive pulse width is T1 is added, in high level, make the
One positive-negative-positive transistor 1 ends；
Step 3, in terminals H the pulse voltage signal that a positive pulse width is T2 is added, in high level, make the
Two positive-negative-positive transistors end；
Step 4, terminals E from high level be changed into low level when, the first positive-negative-positive transistor saturation conduction, explosion velocity survey
Amount instrument starts timing；Terminals H from high level be changed into low level when, the second positive-negative-positive transistor saturation conduction, explosion velocity measurement
Instrument stop timing, the time interval that such as explosion velocity measuring instrument is measured be T3, then the time interval measurement error delta T of explosion velocity measuring instrument=
T3-(T1-T2)。
Above-mentioned high level is 3V~3.3V, and low level is 0V.
Above-mentioned pulse voltage signal is that function generator/AWG is produced.
Pulse voltage signal is that function generator/waveform generator is produced, and the present embodiment is given birth to Agilent company of the U.S.
Illustrated exemplified by 33250A type functions/AWG of production, its method to set up is：Pulse keys are pressed, make its lamp bright,
Amplitude A mpl=3Vpp, direct current biasing offset=1.5V, high level Hilevel=3V, low level Lolevel=0V, pulse period
Period and pulsewidth Width is configured according to the point to be calibrated, and train of pulse Burst is 1cyc, and positive pulse is triggered, then manually
When often pressing the manual triggering Trigger keys on a front panel, 33250A type functions/AWG is exported from Output
End one high level of output is 3V, and low level is the 0V adjustable single pulse signal of pulse width, Sync output ends output duty
Than the square-wave signal for being 3.3V for 50%, amplitude.
33250A Output output ends are respectively coupled to terminals E and terminals GND；Sync output ends are respectively coupled to wiring
H and terminals GND is held, the resistance of potentiometer is 4.7k Ω, be first transferred to maximum 4.7k Ω, 33250A Output output end resistances
Resist for 50 Ω, when not by the triggering button Trigger on 33250A front panels, Output and Sync output ends are 0V, first
Positive-negative-positive transistor saturation conduction, now VFE=0.6V, the cut-off of the second positive-negative-positive transistor.
Through testing repeatedly, the resistance of potentiometer is to the influence relation of the second positive-negative-positive transistor：
During 4.3 k Ω of potentiometer resistance ＞, the voltage of Sync output ends output is in the range of 0V~3.3V, the second positive-negative-positive
Transistor is always at cut-off state；
Potentiometer resistance is in 2k Ω~4.3 k Ω, and the voltage of Sync output ends output is in 0V, the second positive-negative-positive crystal
Triode saturation conduction, in 3.3V, in cut-off state；
Potentiometer resistance is in 0 Ω~2k Ω, and the voltage of Sync output ends output is in the range of 0V~3.3V, the 2nd PNP
Type transistor is always at saturation conduction state；
Exemplified by calibrating 1 μ s points, potentiometer resistance takes 3k Ω, 33250A type functions/AWG output signal
Cycle take the μ s of T=10, cycle selection principle is that the time in cycle is bigger than pulsewidth, and pulsewidth T1 and T2 setting principle are T1 ratios
T2 is big, and its difference T1-T2 is set standard time interval, for example：The μ s of T1=5 μ s, T2=4.0000, the then during standard set
Between interval T0 be：T0=T1-T2=1.0000μs.
When not by the triggering button Trigger on 33250A front panels, Output and Sync output ends are 0V, two PNP
The equal saturation conduction of type transistor, now explosion velocity measuring instrument is not-time.
During by triggering button Trigger on 33250A front panels, Output and Sync output ends export 3V respectively simultaneously
And 3.3V, positive-negative-positive transistor is changed into cut-off simultaneously from saturation conduction, now explosion velocity measuring instrument and not-time；Work as Output
When output end is changed into 0V from 3V, the first positive-negative-positive transistor is changed into saturation conduction from ending, and explosion velocity measuring instrument starts timing；
When Sync output ends are changed into 0V from 3.3V, the second positive-negative-positive transistor is changed into saturation conduction from ending, and explosion velocity measuring instrument stops
Only timing；The time interval measured such as explosion velocity measuring instrument is T3, then explosion velocity measuring instrument time interval measurement error delta T=T3- (T1-
T2)。
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed
Or replace, it should all cover within protection domain of the present utility model, therefore, protection domain of the present utility model should be with the power
The protection domain that profit is required is defined.
Claims (3)
1. a kind of explosion velocity measuring instrument calibrating installation, it is characterised in that：Including two positive-negative-positive transistors, one of positive-negative-positive
The emitter stage of transistor is drawn out to terminals F and base stage is drawn out to terminals E, another positive-negative-positive transistor
Emitter stage is drawn out to terminals G and base stage is drawn out to terminals H, and is in series with before terminals G potentiometer, and two positive-negative-positives are brilliant
Two colelctor electrode short circuits of body triode are followed by earth terminal GND, terminals F and earth terminal GND and are respectively used to connection explosion velocity measurement
The initiating terminal A and initiating terminal B of instrument, terminals G and earth terminal GND are connected respectively to the clearing end C and clearing end of explosion velocity measuring instrument
D, terminals E and terminals H are all connected to function generator/waveform generator.
2. a kind of explosion velocity measuring instrument calibrating installation according to claim 1, it is characterised in that：Function generator/waveform hair
Raw device uses 33250A type functions/AWG.
3. a kind of explosion velocity measuring instrument calibrating installation according to claim 1, it is characterised in that：Terminals E, terminals F, connect
Line end G and terminals H ends are BNC type joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382300.1U CN206515363U (en) | 2016-12-16 | 2016-12-16 | A kind of explosion velocity measuring instrument calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621382300.1U CN206515363U (en) | 2016-12-16 | 2016-12-16 | A kind of explosion velocity measuring instrument calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206515363U true CN206515363U (en) | 2017-09-22 |
Family
ID=59863017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621382300.1U Active CN206515363U (en) | 2016-12-16 | 2016-12-16 | A kind of explosion velocity measuring instrument calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206515363U (en) |
-
2016
- 2016-12-16 CN CN201621382300.1U patent/CN206515363U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110907691B (en) | Wide-range direct-current voltage measuring device based on resistance voltage division time-sharing sampling self-calibration | |
| CN201335860Y (en) | Calibrating device for insulating oil breakdown voltage tester | |
| CN102998645A (en) | Impulse voltage standard wave source for high-voltage impulse voltage quantity value traceability and using method thereof | |
| CN102116827A (en) | Device and method for automatically measuring pulse current-voltage (I-V) and pulse capacitance-voltage (C-V) semiconductor parameters | |
| CN109342939A (en) | The actuation release time calibrating installation and method of relay synthetic parameter test system | |
| CN110967659B (en) | Calibration device, system and method for relay comprehensive tester | |
| CN203519116U (en) | Oil quantity sensor measuring and controlling system based on DSP | |
| CN206515363U (en) | A kind of explosion velocity measuring instrument calibrating installation | |
| CN107449934A (en) | A kind of calibrating installation and calibration method of Kindling paper burning velocity detecting system | |
| CN205749681U (en) | Contact resistance test device | |
| CN103542877A (en) | Method for calibrating aircraft starting box comprehensive inspection tester | |
| CN203133260U (en) | Impulse voltage standard wave source for high-voltage impulse voltage quantity value traceability | |
| CN209167498U (en) | The actuation release time calibrating installation of relay synthetic parameter test system | |
| CN209821349U (en) | Test circuit for electronic fuse thick film circuit | |
| CN201852886U (en) | Multifunctional earth resistance tester | |
| CN207181439U (en) | A kind of calibrating installation of Kindling paper burning velocity detecting system | |
| CN104515968A (en) | Calibration device for capacitor instant open/short circuit tester and calibration method | |
| CN203616374U (en) | DC potentiometer experimental device adopting constant current source | |
| CN107728034B (en) | New Type Power Devices auto-control electrostatic protection test macro and method | |
| CN202066473U (en) | Tester of cable length | |
| CN204649838U (en) | Charging pile charge metering verifying attachment | |
| CN201488835U (en) | Temperature measurer with improved structure | |
| CN109946635B (en) | Conducted sensitivity test system checking device | |
| CN103455400A (en) | Method for testing SMI2 (intel scalable memory interface 2) signals of internal memory | |
| CN204302479U (en) | A kind of capacitor moment open-short circuit tester calibrating installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |