CN205620716U - Guided munition laser receiver emulation test switch control circuit - Google Patents
Guided munition laser receiver emulation test switch control circuit Download PDFInfo
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- CN205620716U CN205620716U CN201620351880.1U CN201620351880U CN205620716U CN 205620716 U CN205620716 U CN 205620716U CN 201620351880 U CN201620351880 U CN 201620351880U CN 205620716 U CN205620716 U CN 205620716U
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Abstract
The utility model discloses a guided munition laser receiver emulation test switch control circuit, it includes converting circuit and conversion control circuit, the beneficial effects are that: the utility model discloses an inspect, simulate gun -launched missile laser receiver's performance parameters, working timing, data communication etc to monitor whole experimental situation, the utility model discloses the configuration is nimble, and the system is changeable, convenient to use easy operation, the utility model discloses stronger scalability has, with the utility model discloses a test demand of new model ammunition can be accomplished in the basis, also can satisfy and grind digital gun -launched missile's test, the utility model discloses still have self -checking function, leave the equipment calibration interface, make things convenient for equipment periodic calibration.
Description
Technical field
This utility model belongs to gun launched missile technical field of measurement and test, relates to a kind of guided munition laser receiver emulation testing
Switch control circuit.
Background technology
Typically, guided munition product is the electronic product constituted based on ten million components and parts, or by some assemblies and
The Complex Structural System of parts composition, the Support of its Complex Structural System more levels off to a great system engineering.At this
In system engineering, it is important that a part be then test system, the survey of the various parameters of its main completion system level product
Examination and functional verification, including reliability test, ground simulation etc..The parameter of guided munition and functional verification are test guided munitions
The important component part of properties of product, is the basic means obtaining guided munition at different lifetime stage quality informations.
Laser receiver is one of important composition parts of guided munition guidance control system, its parameter and functional verification
It is one of important process testing guided munition properties of product, to grasping guided munition guidance control system overall performance state tool
Significant.
Utility model content
Technical problem to be solved in the utility model is to provide one and can carry out laser receiver unit for electrical property parameters
The guided munition laser receiver emulation testing switch control circuit of intelligent test.
Be employed technical scheme comprise that a kind of guided munition laser receiver emulation testing turns by solving above-mentioned technical problem
Connection control circuit, it includes change-over circuit and conversion control circuit；Described change-over circuit include the 101st to the 104th relay with
And the 1028th relay；
The port DY1+ of programmable power supply connects laser receiver through the 1st normally opened contact KJG101-1 of described 101st relay
The power positive end JGZ of X1；The port DY1-of programmable power supply connects sharp through the 2nd normally opened contact KJG101-2 of described 101st relay
The power supply ground end JGND of photoreceiver X1；
The port DY2-of programmable power supply connects laser pick-off through the 1st normally opened contact KJG1028-1 of described 1028th relay
The power supply negative terminal JGF of machine X1；The port DY2+ of programmable power supply is through the 2nd normally opened contact KJG1028-2 of described 1028th relay
Hold JGND with connecing the power supply of laser receiver X1；
The transmitter control signal input JFX of laser receiver X1 is through the 1st normally opened contact of described 104th relay
KJG104-1 connects the corresponding port of pulse-generating circuit；The transmitter signal ground end JFDG of laser receiver X1 is through the described 104th
2nd normally opened contact KJG104-2 of relay connects the corresponding port of pulse-generating circuit；
Oscillographic port SB1 connects laser receiver X1's through the 1st normally opened contact KJG103-1 of described 103rd relay
Signal output port JXC；Oscillographic port SB1D connects laser through the 2nd normally opened contact KJG103-2 of described 103rd relay
The power supply ground end JGND of receiver X1；
The test signal ground end JXR of laser receiver X1 is successively through the 1st normally opened contact of described 102nd relay
KJG102-1, the 2nd normally opened contact KJG102-2 of the 102nd relay hold JGND with connecing the power supply of laser receiver X1；
Described conversion control circuit includes buffer U2-5, rp-drive U2-11 and 9 foot exclusion RP1；
Input 1A ~ the 6A of described buffer U2-5 connects the corresponding port of numeral I/O module respectively；Described buffer U2-5
Outfan 1Y ~ 6Y connect corresponding input 6 foot ~ 1 foot of described rp-drive U2-11 respectively；The electricity of described buffer U2-5
Source VCC meets the port+5V+ of programmable power supply；The earth terminal GND ground connection of described buffer U2-5；Described rp-drive U2-11
9 feet meet the port+24V+ of described programmable power supply；The 8 foot ground connection of described rp-drive U2-11；
Wherein the 6 of the port+5V+ of the described programmable power supply of public termination of described 9 foot exclusion RP1, described 9 foot exclusion RP1
Individual not common end pin connects input 1 foot ~ 6 foot of the described rp-drive U1-11 of correspondence respectively；
The coil KJG101 of described 101st relay is connected on outfan 11 foot of described rp-drive U2-11 with program control
Between the port+24V+ of power supply；
The coil KJG102 of described 102nd relay is connected on outfan 12 foot of described rp-drive U2-11 with program control
Between the port+24V+ of power supply；
The coil KJG103 of described 103rd relay is connected on outfan 13 foot of described rp-drive U2-11 with program control
Between the port+24V+ of power supply；
The coil KJG104 of described 104th relay is connected on outfan 14 foot of described rp-drive U2-11 with program control
Between the port+24V+ of power supply；
The coil KJG1028 of described 1028th relay is connected on outfan 15 foot and the journey of described rp-drive U2-11
Between the port+24V+ of control power supply；
The coil KMZ1 of the first Pulse Width Control relay of pulse-generating circuit is connected on the defeated of described rp-drive U2-11
Go out between end 16 feet and the port+24V+ of programmable power supply.
The model of described buffer U2-5 is 74LS07；The model of described rp-drive U2-11 is MC1413.
The beneficial effects of the utility model are: this utility model is the characterisitic parameter to gun launched missile laser receiver, work
Make sequential, data communication etc. to carry out checking, simulating, and whole Test condition is monitored；This utility model flexible configuration, be
Unite changeable, easy to use simple to operate；This utility model has stronger extensibility, based on this utility model,
The testing requirement of new model ammunition can be completed, it is also possible to meet in the test grinding digital gun launched missile；This utility model also has
Having self-checking function, leave equipment Alignment interface, facilitate equipment periodic calibration, equipment can work more than 8 hours continuously.
Accompanying drawing explanation
Fig. 1 is change-over circuit schematic diagram.
Fig. 2 is conversion control circuit schematic diagram.
Fig. 3 is the theory diagram that this utility model is applied to guided munition laser receiver simulation testing device.
Fig. 4 is pulse-generating circuit schematic diagram.
Detailed description of the invention
From the embodiment shown in Fig. 1-4, it includes that industrial computer, router, oscillograph, digital multimeter, function are sent out
Raw device, programmable power supply, selection switch, numeral I/O module, change-over circuit, conversion control circuit and pulse-generating circuit；Described turn
Change circuit and include the 101st to the 104th relay and the 1028th relay；
Described oscillograph, digital multimeter, programmable power supply, functional generator, selection switch and numeral I/O module are led to respectively
Cross router to be connected with described industrial computer；
Described digital multimeter is connected with the described corresponding port selecting switch；
Described selection switch is connected with the corresponding port of laser receiver X1；
Described functional generator is connected with the corresponding port of described pulse-generating circuit；
Described numeral I/O module corresponding port with described pulse-generating circuit and conversion control circuit respectively is connected；
Described programmable power supply corresponding port with conversion control circuit and pulse-generating circuit respectively is connected；
The port DY1+ of described programmable power supply connects laser through the 1st normally opened contact KJG101-1 of described 101st relay and connects
The power positive end JGZ of receipts machine X1；The port DY1-of described programmable power supply is through the 2nd normally opened contact of described 101st relay
KJG101-2 holds JGND with connecing the power supply of laser receiver X1；
The port DY2-of described programmable power supply connects laser through the 1st normally opened contact KJG1028-1 of described 1028th relay
The power supply negative terminal JGF of receiver X1；The port DY2+ of described programmable power supply is through the 2nd normally opened contact of described 1028th relay
KJG1028-2 holds JGND with connecing the power supply of laser receiver X1；
The transmitter control signal input JFX of laser receiver X1 is through the 1st normally opened contact of described 104th relay
KJG104-1 connects the corresponding port of described pulse-generating circuit；The transmitter signal ground end JFDG of laser receiver X1 is through described the
2nd normally opened contact KJG104-2 of 104 relays connects the corresponding port of described pulse-generating circuit；
Described oscillographic port SB1 connects laser receiver through the 1st normally opened contact KJG103-1 of described 103rd relay
The signal output port JXC of X1；Described oscillographic port SB1D is through the 2nd normally opened contact KJG103-of described 103rd relay
Hold JGND 2 power supplys meeting laser receiver X1；
The test signal ground end JXR of laser receiver X1 is successively through the 1st normally opened contact of described 102nd relay
KJG102-1, the 2nd normally opened contact KJG102-2 of the 102nd relay hold JGND with connecing the power supply of laser receiver X1.
Described pulse-generating circuit includes phase inverter U11A, phase inverter U11B, enumerator U12, selector U13, switching molding
Block U14, resistance R90, the first Pulse Width Control relay, port MZ1 and port MGD1；
The outfan XF1 of functional generator meets institute through the 1st normally opened contact KMZ1-1 of described first Pulse Width Control relay
State 4 feet of switch module U14；
The outfan XF2 of functional generator meets institute through the 2nd normally opened contact KMZ1-2 of described first Pulse Width Control relay
State 3 feet of switch module U14；
The outfan XF1D of functional generator connects 11 feet of described switch module U14；
The outfan XF2D of functional generator connects 12 feet of described switch module U14；
6 feet of described switch module U14 and 9 feet connect outfan 4 foot of described phase inverter U11B respectively；
2 feet of described switch module U14 and 5 feet meet described port MZ1 respectively；
Described port MZ1 connects the transmitting of laser receiver X1 through the 1st normally opened contact KJG104-1 of described 104th relay
Machine control signal input JFX；
10 feet of described switch module U14 and 13 feet meet described port MGD1 respectively；
Described port MGD1 connects sending out of laser receiver X1 through the 2nd normally opened contact KJG104-2 of described 104th relay
Penetrate machine signal ground end JFDG；
Input 1 foot of described phase inverter U11A meets the port CLK of numeral I/O module；
1 foot of described selector U13 to 4 feet meet port D3 ~ D0 that numeral I/O module is corresponding respectively；Described selector U13
12 feet to 15 feet meet numeral port D7 ~ D4 corresponding to I/O module respectively；
Outfan 2 foot of described phase inverter U11A connects 5 feet of described enumerator U12；
3 feet of described enumerator U12 connect 11 feet of described selector U13；2 feet of described enumerator U12 connect described selection
10 feet of device U13；6 feet of described enumerator U12 connect 9 feet of described selector U13；
7 feet of described enumerator U12 connect its 14 foot；
6 feet of described selector U13 connect input 3 foot of described phase inverter U11B；The outfan 4 of described phase inverter U11B
Foot meets the port+5V+ of programmable power supply through described resistance R90；
4 feet of described enumerator U12,11 feet and 16 feet meet the port+5V+ of programmable power supply respectively；Described enumerator U12's
15 feet, 1 foot, 10 feet, 9 feet and 8 feet ground connection respectively；16 feet of described selector U13 meet the port+5V+ of programmable power supply；Described choosing
Select 7 feet and the 8 feet ground connection respectively of device U13；
14 feet of described switch module U14 meet the port+15V+ of programmable power supply；8 feet of described switch module U14 connect program control
Port-the 15V-of power supply；7 feet of described switch module U14 connect port+15V-, port-15V+ and the port of programmable power supply respectively
+5V-。
Described conversion control circuit includes buffer U2-5, rp-drive U2-11 and 9 foot exclusion RP1；
Input 1A ~ the 6A of described buffer U2-5 connects the corresponding port of described numeral I/O module respectively；Described buffer
Outfan 1Y ~ the 6Y of U2-5 connects corresponding input 6 foot ~ 1 foot of described rp-drive U2-11 respectively；Described buffer U2-5
Power end VCC meet the port+5V+ of described programmable power supply；The earth terminal GND ground connection of described buffer U2-5；Described anti-phase drive
9 feet of dynamic device U2-11 meet the port+24V+ of described programmable power supply；The 8 foot ground connection of described rp-drive U2-11；
Wherein the 6 of the port+5V+ of the described programmable power supply of public termination of described 9 foot exclusion RP1, described 9 foot exclusion RP1
Individual not common end pin connects input 1 foot ~ 6 foot of the described rp-drive U1-11 of correspondence respectively；
The coil KJG101 of described 101st relay is connected on outfan 11 foot of described rp-drive U2-11 with described
Between the port+24V+ of programmable power supply；
The coil KJG102 of described 102nd relay is connected on outfan 12 foot of described rp-drive U2-11 with described
Between the port+24V+ of programmable power supply；
The coil KJG103 of described 103rd relay is connected on outfan 13 foot of described rp-drive U2-11 with described
Between the port+24V+ of programmable power supply；
The coil KJG104 of described 104th relay is connected on outfan 14 foot of described rp-drive U2-11 with described
Between the port+24V+ of programmable power supply；
The coil KJG1028 of described 1028th relay is connected on outfan 15 foot and the institute of described rp-drive U2-11
State between the port+24V+ of programmable power supply；
The coil KMZ1 of described first Pulse Width Control relay be connected on outfan 16 foot of described rp-drive U2-11 with
Between the port+24V+ of described programmable power supply.
The model of described digital multimeter is 34405A；Described oscillographic model is DPO4034；Described functional generator
Model be 33210A；The model of described programmable power supply is N6700B；The described model selecting switch is L4421A；Described numeral
The model of I/O module is L4450A.
The model of described phase inverter U11A and phase inverter U11B is 74LS04；The model of described enumerator U12 is
74LS193；The model of described selector U13 is 74LS151；The model of described switch module U14 is DG303AAK；Described buffering
The model of device U2-5 is 74LS07；The model of described rp-drive U2-11 is MC1413.
This utility model method of testing is as follows:
A. consume testing current: industrial computer sends instruction by numeral I/O module transfer to conversion control circuit, make the
The normally opened contact Guan Bi of 101 relays and the 1028th relay, connects programmable power supply, and consuming electric current can read from power supply.Or
Transmit data to industrial computer process.
B. output signal frequency test: industrial computer sends instruction by numeral I/O module transfer to conversion control circuit,
The normally opened contact making the 103rd relay closes, and connects oscillograph, and signal frequency is obtained by oscillograph.
C. sensitivity test: industrial computer sends instruction by numeral I/O module transfer to conversion control circuit, makes the 104th
The normally opened contact Guan Bi of relay, is produced pulse command by functional generator, digital multimeter reads data.
D. threshold testing is led to: read by digital multimeter and upload industrial computer.
The input of pulse command circuit comes from functional generator, and for producing pulse, sine involves 21K signal, signal
Modulated by the switch module U14 that model is DG303AAK, produce the command signal required by measurand.
A) programmable DC regulated power supply, using the teaching of the invention it is possible to provide supply voltage, electric current is not less than 3A, can directly test electric current and electricity
Pressure；
B) functional generator, reference frequency output: 0～10MHz, sinusoidal wave or square wave, output amplitude (peak-to-peak value) up to
15V；
C) numeral I/O module: digital quantity input and the output on up to 128 tunnels；
D) digital multimeter, DC voltage measurement scope: 0～± 1000V, ac voltage measurement scope: 0～700V；Survey
Examination accuracy is not less than 0.1%；
E) oscillograph, 4 passage inputs, 0～350MHz bandwidth, vertical factor is not less than 2%, and horizontal factor is not less than 3%, energy
Store over the data of 1 minute；
F) fine phase meter, 1Hz～10MHz, test accuracy is more than 0.05 °；
G) switch is selected, no less than 20 tunnels.
Digital multimeter
Main test function is as follows:
Alternating voltage:
A) five kinds of ranges: 100.000 mV, 1.00000 V, 10.0000 V, 100.000 V, 750.00 V；
B) measuring method: the real rms of AC coupled-measured by 400 VDC biass on any range；
C) AC portion；
D) crest factor: be 5:1 during full scale to the maximum；
E) input impedance: < 100pF is in parallel with on all ranges for 1 M Ω ± 2%；
F) input protection: be 750V rms (HI terminal) on all ranges.
DC voltage:
A) five kinds of ranges: 100.000 mV, 1.00000 V, 10.0000 V, 100.000 V, 1000.00 V
B) measuring method: Sigma Delta hands over and turns straight transducer
C) input impedance: all ranges of ~ 10 M Ω (typical)
D) input protection: the 1000V (HI end) on all ranges
DC precision and AC precision the key technical indexes are shown in Tables 1 and 2.
Table 1 DC precision
Table 2 AC precision
Programmable power supply N6700B is a configurable platform, be can be combined by it and mate output module with create be best suitable for
The power-supply system of test system requirements.Its available power level has 400 W, 600 W and 1,200 W.Power is 50
The output module of W, 100 W and 300 W has different voltage and current combinations, and provides following Performance Characteristics:
A) there is programmable voltage and electric current, measurement and defencive function, make these economic modules be suitably for equipment under test or
The system resources such as control equipment are powered；
B) there is high-performance, automatically adjustment range DC power supplier low noise, high accuracy, fast programming, height are provided
Level programming and measurement function, to accelerate testing progress；
C) it is precision DC stabilizer module, can provide in the range of milliampere and microampere and accurately control and measure, have simultaneously
By voltage and current digitized and these measured values to be captured the ability in similar oscillographic data buffer.
Output function:
A) programmable voltage and electric current: output voltage and electric current for gamut provide programing function completely.Output
Can be as constant voltage: (CV) or constant current (CC) source;
B) express command processes: the process time of each order is less than 1 millisecond;
C) quickly up/down programming: for automatically adjusting range and precision voltage source module, change to from the 10% of specified output
The response time of 90% is 1.5 milliseconds;
D) fast transient response: for automatically adjusting range and precision voltage source module, the transient response time is micro-less than 100
Second;
E) low output noise: the output noise automatically adjusting range and precision voltage source module is usually 4 mV peak-to-peak values,
Can match in excellence or beauty with linear power supply;
F) range function is automatically adjusted: automatically adjust range function and scope can be set at wider and continuous print voltage and current
In, produce maximum rated power for automatically adjusting range and precision voltage source module;
G) output open/close sequence: the unlatching of each output/closedowns delay feature make you can be export unlatching/
Close sequence.
Defencive function:
A) remote voltage sensing: each output provides two remote sense terminals.When dispatching from the factory, remote sense wire jumper is contained in
Individually bag provides；
B) voltage and current is measured: all output modules can measure output voltage and the electric current of themselves；
C) voltage, electric current and temperature protection: each output has overvoltage, overcurrent and overtemperature protection.Overvoltage and mistake
Current protection can pass through programme-control.After activation, protection circuit can make voltage vanishing, exports disabled and reports protection shape
State.
Systemic-function
A) SCPI language: instrument is compatible with standard commands for programmable instruments (SCPI)；
B) optional three kinds of interfaces: the most built-in GPIB (IEEE-488), LAN and USB remote programming interface；
C) front panel I/O is arranged: can arrange GPIB and LAN parameter by menu from front panel；
D) built-in Web server: by built-in Web server can explorer from computer direct
Control instrument；
E) real time status information: front panel indicates the state of each output.Even if occurring to also indicate that during protectiveness shutdown；
F) module identification: preserve identification data in the nonvolatile memory of each module.Information include module No.,
Serial number and option.This information may be displayed on front panel.
The effect of 64 bit digital I/O modules: (1) provides clock for pulse command circuit；(2) it is switch control circuit input
Control signal；(3) programming Control of pulse duty factor.Select switch to coordinate with digital multimeter and realize automatic multi-point sampler.Show
The effect of ripple device: the output signal frequency of (1) Laser Measurement receiver；(2) electric magnet measuring steering wheel starts the time；(3) survey
The amount self-oscillatory frequency of steering wheel and amplitude.Digital multimeter is used for multimetering.Functional generator produces institute during measuring
The signal needed.Programmable power supply is powered for this utility model.
The above embodiment is only preferred embodiment of the present utility model, and not this utility model possible embodiments
Exhaustive.For persons skilled in the art, to its institute on the premise of without departing substantially from this utility model principle and spirit
Any obvious change made, within all should being contemplated as falling with claims of the present utility model.
Claims (2)
1. a guided munition laser receiver emulation testing switch control circuit, it is characterised in that: include change-over circuit and turn
Change control circuit；Described change-over circuit includes the 101st to the 104th relay and the 1028th relay；
The port DY1+ of programmable power supply connects laser receiver X1's through the 1st normally opened contact KJG101-1 of described 101st relay
Power positive end JGZ；The port DY1-of programmable power supply connects laser through the 2nd normally opened contact KJG101-2 of described 101st relay and connects
The power supply ground end JGND of receipts machine X1；
The port DY2-of programmable power supply meets laser receiver X1 through the 1st normally opened contact KJG1028-1 of described 1028th relay
Power supply negative terminal JGF；The port DY2+ of programmable power supply connects sharp through the 2nd normally opened contact KJG1028-2 of described 1028th relay
The power supply ground end JGND of photoreceiver X1；
The transmitter control signal input JFX of laser receiver X1 is through the 1st normally opened contact of described 104th relay
KJG104-1 connects the corresponding port of pulse-generating circuit；The transmitter signal ground end JFDG of laser receiver X1 is through the described 104th
2nd normally opened contact KJG104-2 of relay connects the corresponding port of pulse-generating circuit；
Oscillographic port SB1 connects the signal of laser receiver X1 through the 1st normally opened contact KJG103-1 of described 103rd relay
Output port JXC；Oscillographic port SB1D connects laser pick-off through the 2nd normally opened contact KJG103-2 of described 103rd relay
The power supply ground end JGND of machine X1；
The test signal ground end JXR of laser receiver X1 is successively through the 1st normally opened contact KJG102-of described 102nd relay
1, the 2nd normally opened contact KJG102-2 of the 102nd relay connect laser receiver X1 power supply hold JGND；
Described conversion control circuit includes buffer U2-5, rp-drive U2-11 and 9 foot exclusion RP1；
Input 1A ~ the 6A of described buffer U2-5 connects the corresponding port of numeral I/O module respectively；Described buffer U2-5's is defeated
Go out to hold 1Y ~ 6Y to connect corresponding input 6 foot ~ 1 foot of described rp-drive U2-11 respectively；The power end of described buffer U2-5
VCC meets the port+5V+ of programmable power supply；The earth terminal GND ground connection of described buffer U2-5；The 9 of described rp-drive U2-11
Foot meets the port+24V+ of described programmable power supply；The 8 foot ground connection of described rp-drive U2-11；
Port+the 5V+ of the described programmable power supply of public termination of described 9 foot exclusion RP1, described 9 foot exclusion RP1 wherein 6 non-
Common port pin connects input 1 foot ~ 6 foot of the described rp-drive U1-11 of correspondence respectively；
The coil KJG101 of described 101st relay is connected on outfan 11 foot and the programmable power supply of described rp-drive U2-11
Port+24V+ between；
The coil KJG102 of described 102nd relay is connected on outfan 12 foot and the programmable power supply of described rp-drive U2-11
Port+24V+ between；
The coil KJG103 of described 103rd relay is connected on outfan 13 foot and the programmable power supply of described rp-drive U2-11
Port+24V+ between；
The coil KJG104 of described 104th relay is connected on outfan 14 foot and the programmable power supply of described rp-drive U2-11
Port+24V+ between；
The coil KJG1028 of described 1028th relay is connected on outfan 15 foot and the program-controlled electric of described rp-drive U2-11
Between the port+24V+ in source；
The coil KMZ1 of the first Pulse Width Control relay of pulse-generating circuit is connected on the outfan of described rp-drive U2-11
Between the port+24V+ of 16 feet and programmable power supply.
A kind of guided munition laser receiver emulation testing switch control circuit the most according to claim 1, its feature exists
In: the model of described buffer U2-5 is 74LS07；The model of described rp-drive U2-11 is MC1413.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351880.1U CN205620716U (en) | 2016-04-25 | 2016-04-25 | Guided munition laser receiver emulation test switch control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620351880.1U CN205620716U (en) | 2016-04-25 | 2016-04-25 | Guided munition laser receiver emulation test switch control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205620716U true CN205620716U (en) | 2016-10-05 |
Family
ID=57027212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620351880.1U Expired - Fee Related CN205620716U (en) | 2016-04-25 | 2016-04-25 | Guided munition laser receiver emulation test switch control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205620716U (en) |
-
2016
- 2016-04-25 CN CN201620351880.1U patent/CN205620716U/en not_active Expired - Fee Related
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