A radio fuze simulation test system

Abstract

The present invention relates to a radio fuze simulation test system, which includes a dual environmental force simulation device, a proximity detonation signal simulation device, a percussion detonation simulation test device, a signal acquisition device and a control device. The dual environmental force simulation device, the proximity detonation signal simulation device, the percussion detonation simulation test device and the signal acquisition device are respectively electrically connected to the control device. The beneficial effects of the present invention are as follows: The whole fuze can be detected without changing the technical state (without any disassembly and modification, maintaining the original state inside the fuze), simulating the dual environmental conditions experienced by the fuze during the projectile launch process, with a high degree of simulation; The replacement and detection of the fuze can be completed by a single person through manual operation; It has high safety and reliability and high test accuracy; It can replace the real projectile to complete the function detection, fault analysis and inspection acceptance of the fuze, which will greatly improve the detection efficiency of the projectile fuze and save a large amount of funds for purchasing similar special detection equipment.

Description

Technical Field

[0001] The present invention relates to the field of bullets, and particularly to a radio fuze simulation test system. Background Art

[0002] As the storage time of rockets gradually increases, the radio fuzes in the storage state are affected by environmental stresses, and their internal performance (safety performance and combat technology performance) will inevitably change, and the quality status gradually declines, directly affecting the storage performance and service performance of ammunition. How to accurately and timely grasp their quality status so that the headquarters can make decisions on their use, technical treatment, etc. has become a major problem that the ammunition management and using troops of our army urgently need to solve, and it has also become a practical problem directly related to whether the storage safety of rockets during peacetime and reliable use during wartime can be ensured. However, there is currently no corresponding simulation test method and equipment that can comprehensively evaluate the performance of radio fuzes throughout the system to determine their quality status, resulting in the storage management and use of the radio fuzes being without basis. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a radio fuze simulation test system to overcome the above deficiencies in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A radio fuze simulation test system includes a dual environmental force simulation device, a proximity detonation signal simulation device, a percussion detonation simulation test device, a signal acquisition device, and a control device. The dual environmental force simulation device, the proximity detonation signal simulation device, the percussion detonation simulation test device, and the signal acquisition device are respectively electrically connected to the control device; the signal acquisition device is used to collect the electromagnetic wave signals emitted by the electronic head after the battery in the fuze is activated, to collect the explosion sounds generated by the fuze during proximity detonation tests, and to measure the time set by the timer in the radio fuze.

[0005] The beneficial effects of the present invention are: The whole fuze can be detected without changing the technical state (without any disassembly and modification, maintaining the original state inside the fuze), simulating the dual environmental conditions experienced by the fuze during the projectile launch process, with a high degree of simulation; high safety and reliability, and high test accuracy; it can replace real projectiles to complete the function detection, fault analysis, inspection and acceptance of fuzes, which will greatly improve the detection efficiency of projectile fuzes and save a large amount of funds for purchasing similar special detection equipment.

[0006] Based on the above technical solutions, the present invention can also be improved as follows.

[0007] Furthermore, the dual-environment force simulation device includes an inertial acceleration simulation component and a centrifugal acceleration simulation component. The centrifugal acceleration simulation component is disposed on the inertial acceleration simulation component, and the centrifugal acceleration simulation component and the inertial acceleration simulation component are respectively electrically connected to the control device.

[0008] Furthermore, the dual-environment force simulation device further includes an electromagnetic shielding component. The electromagnetic shielding component is disposed on the inertial acceleration simulation component, and the electromagnetic shielding component is electrically connected to the control device.

[0009] Furthermore, the inertial acceleration simulation component includes a base, an electric spindle, a first turntable, a driving mechanism, and an electromagnetic positioning pin. The first turntable is arranged above the base. The driving mechanism is disposed on the base. The electric spindle is rotatably arranged on the base, and two ends of the electric spindle are respectively connected to the output end of the driving mechanism and the first turntable. The electromagnetic positioning pin is disposed on the base. A positioning hole is provided on the electric spindle. During the process of gaining and losing power, the plug inside the electromagnetic positioning pin alternately disengages from and inserts into the positioning hole. The driving mechanism and the electromagnetic positioning pin are respectively electrically connected to the control device. The centrifugal acceleration simulation component and the electromagnetic shielding component are disposed on the first turntable.

[0010] Furthermore, the centrifugal acceleration simulation component includes a corner motor, a second turntable, a base, and a rotating motor. The corner motor is disposed on the first turntable. The second turntable is arranged above the first turntable and is connected to the output shaft of the corner motor. The rotation center line of the second turntable is collinear with the rotation center line of the first turntable. The base is disposed on the second turntable. A solenoid for screwing with the radio fuse is rotatably provided inside the base. The rotating motor is disposed on the base, and the output shaft of the rotating motor is connected to the solenoid. The corner motor and the rotating motor are respectively electrically connected to the control device.

[0011] The beneficial effects of the above four steps are as follows: Loading the radio fuse to be tested on the centrifugal acceleration simulation component, starting the inertial acceleration simulation component and the centrifugal acceleration simulation component to simulate the inertial acceleration and centrifugal acceleration during the launch and flight process of the radio fuse, so that the insurance of the radio fuse can be effectively released. The structure is simple and the efficiency is high.

[0012] Furthermore, the electromagnetic shielding component includes an anti-static sleeve and a first linear movement mechanism. The first linear movement mechanism is disposed on the first turntable. The anti-static sleeve is disposed on the first linear movement mechanism. The anti-static sleeve is a columnar structure with a hollow interior and an open end. The open end of the anti-static sleeve faces the solenoid. The anti-static sleeve is driven by the first linear movement mechanism to enable the electronic head of the radio fuse screwed on the solenoid to enter the anti-static sleeve through the open end of the anti-static sleeve and completely disengage from the anti-static sleeve. The first linear movement mechanism is electrically connected to the control device.

[0013] A further beneficial effect of the above method is that since the test object is a radio fuse, when conducting a dual-environment force release test, the battery changes from a waiting state to an activated state, and the addition of an electromagnetic shielding component can prevent external interference with the radio fuse.

[0014] Furthermore, the proximity signal simulation device includes a reflective plate and a movable electric track. The movable electric track is arranged on the ground. The reflective plate is set on the movable electric track. The reflective plate is at the same height as the electronic head of the radio fuse. The movable electric track drives the reflective plate to move in a direction parallel to the rotation center line of the spiral tube. The reflective plate and the movable electric track are electrically connected to the control device respectively.

[0015] A further beneficial effect of adopting the above method is that during the test, according to the test method requirements, the reflector plate can be moved twice toward the direction of the radio fuse electronic head to ensure that the proximity function of the radio fuse is reliably realized.

[0016] Furthermore, the impact and explosion simulation test device includes a robot, a disassembly claw and an impact and explosion throwing tube. The disassembly claw is set on the robot. The robot removes the radio fuse on the screw tube through the disassembly claw and throws it into the impact and explosion throwing tube.

[0017] Furthermore, the disassembly clamp includes a driving motor, a driving gear, a compressor, a sleeve, a tapered tube and a four-jaw chuck. The compressor is fixedly arranged on the robot, the four-jaw chuck is connected to the compressor through the sleeve, the tapered tube is sleeved on the sleeve, the driving motor is fixedly arranged on the compressor, the driving gear is connected to the output shaft of the driving motor, and the outer circumferential surface of the tapered tube is provided with a tooth groove meshing with the driving gear.

[0018] Furthermore, the impact throwing tube includes a throwing guide tube, an anvil bottom box, a switch cover and a rotating motor. The throwing guide tube is arranged above the anvil bottom box, and the lower end of the throwing guide tube is connected to the inner cavity of the anvil bottom box. The rotating motor is arranged on the throwing guide tube; the switch cover is arranged at the opening of the upper end of the throwing guide tube and is connected to the output shaft of the rotating motor. The rotating motor prompts the switch cover to open and close the opening of the upper end of the throwing guide tube during rotation.

[0019] The beneficial effects of adopting the above three steps are: the fuze can be effectively disassembled from the base and thrown to explode, which has high safety, high efficiency and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the dual environment force simulation device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the explosion simulation test device of the present invention;

[0022] Figure 3Schematic structural diagram of the proximity signal simulation device of the present invention;

[0023] Figure 4 Electrical principle block diagram of the radio fuse simulation test system of the present invention;

[0024] Figure 5 Electrical schematic diagram of the radio wave signal acquisition module of the present invention;

[0025] Figure 6 Electrical schematic diagram of the detonating explosive signal acquisition module of the present invention.

[0026] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Dual environmental force simulation device, 110. Inertial acceleration simulation component, 111. Base, 112. Electric main shaft, 113. First turntable, 114. Electromagnetic positioning pin, 115. First motor, 120. Centrifugal acceleration simulation component, 121. Rotary angle motor, 122. Second turntable, 123. Base, 1231. Solenoid, 124. Rotary motor, 130. Electromagnetic shielding component, 131. Anti-static sleeve, 132. First linear movement mechanism, 2. Proximity signal simulation device, 210. Reflector, 220. Movable electric track, 3. Impact explosion simulation test device, 310. Robot, 311. Second linear movement mechanism, 312. Lower riser pipe, 313. Lifter, 314. Upper riser pipe, 315. Cross arm, 316. Fixed bushing, 317. Deflection motor, 320. Disassembly jaw, 321. Driving motor, 322. Driving gear, 323. Compressor, 324. Sleeve, 325. Conical pipe, 326. Four-jaw chuck, 330. Impact explosion throwing tube, 331. Throwing conduit, 332. Anvil bottom box, 333. Switch cover, 334. Rotating motor, 4. Signal acquisition device, 410. Radio wave signal acquisition module, 420. Detonating explosive signal acquisition module, 430. High-speed rotation signal acquisition module, 440. Fuse self-rotation speed signal acquisition module, 450. Time measurement module, 5. Control device, 510. Central controller, 520. Computer, 6. Counterweight. Specific embodiments

[0028] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0029] According to the performance, structural characteristics of the radio fuse, and the determined test items and judgment criteria, in order to achieve the semi-physical simulation test, a dual environmental force simulation device 1 is designed to simulate the environmental force required for the radio fuse to arm, and combined with the push plate test method, a proximity signal simulation device 2 is designed to simulate the Doppler signal and test the proximity function of the radio fuse. Combined with the drop test method, a percussion simulation test device 3 is designed to simulate the process of the radio fuse hitting the target and test the percussion function of the radio fuse.

[0030] Embodiment 1

[0031] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 shown, a radio fuse simulation test system includes a dual environmental force simulation device 1, a proximity signal simulation device 2, a percussion simulation test device 3, a signal acquisition device 4, and a control device 5. The dual environmental force simulation device 1, the proximity signal simulation device 2, the percussion simulation test device 3, and the signal acquisition device 4 are respectively electrically connected to the control device 5.

[0032] Embodiment 2

[0033] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 shown, a radio fuse simulation test system includes a dual environmental force simulation device 1, a proximity signal simulation device 2, a percussion simulation test device 3, a signal acquisition device 4, and a control device 5. The dual environmental force simulation device 1, the proximity signal simulation device 2, the percussion simulation test device 3, and the signal acquisition device 4 are respectively electrically connected to the control device 5.

[0034] The dual environmental force simulation device 1 mainly realizes the simulation of inertial acceleration and centrifugal acceleration during the launch and flight process of the radio fuse. Therefore, the dual environmental force simulation device 1 is designed to include an inertial acceleration simulation component 110, a centrifugal acceleration simulation component 120, and an electromagnetic shielding component 130. The electromagnetic shielding component 130 mainly ensures that the radio fuse is not interfered by external electromagnetic signals during the test under the simulated environmental force, improving the test safety and reliability.

[0035] The dual environmental force simulation device 1 includes an inertial acceleration simulation component 110, a centrifugal acceleration simulation component 120, and an electromagnetic shielding component 130. The centrifugal acceleration simulation component 120 and the electromagnetic shielding component 130 are both arranged on the inertial acceleration simulation component 110. The centrifugal acceleration simulation component 120, the electromagnetic shielding component 130, and the inertial acceleration simulation component 110 are respectively electrically connected to the control device 5.

[0036] Embodiment 3

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, a radio fuze simulation test system includes a dual-environment force simulation device 1, a proximity signal simulation device 2, a percussion explosion simulation test device 3, a signal acquisition device 4, and a control device 5. The dual-environment force simulation device 1, the proximity signal simulation device 2, the percussion explosion simulation test device 3, and the signal acquisition device 4 are respectively electrically connected to the control device 5.

[0038] The dual-environment force simulation device 1 mainly realizes the simulation of inertial acceleration and centrifugal acceleration during the launch and flight process of the radio fuze. Therefore, the dual-environment force simulation device 1 is designed to include an inertial acceleration simulation component 110, a centrifugal acceleration simulation component 120, and an electromagnetic shielding component 130. The electromagnetic shielding component 130 mainly ensures that the radio fuze is not interfered by external electromagnetic signals during the test under the simulated environmental force, improving the test safety and reliability.

[0039] The dual-environment force simulation device 1 includes an inertial acceleration simulation component 110, a centrifugal acceleration simulation component 120, and an electromagnetic shielding component 130. The centrifugal acceleration simulation component 120 and the electromagnetic shielding component 130 are both arranged on the inertial acceleration simulation component 110. The centrifugal acceleration simulation component 120, the electromagnetic shielding component 130, and the inertial acceleration simulation component 110 are respectively electrically connected to the control device 5.

[0040] The inertial acceleration simulation component 110 includes a base 111, an electric main shaft 112, a first turntable 113, a driving mechanism, and an electromagnetic positioning pin 114. The first turntable 113 is arranged above the base 111. The driving mechanism is arranged on the base 111. The electric main shaft 112 is rotatably arranged on the base 111. Usually, the electric main shaft 112 is vertically fixed on the base 111 through a plurality of bearings. The outer rings of the bearings are fixed to the base 111, and the inner rings of the bearings are sleeved on the electric main shaft 112 and fixedly connected to the electric main shaft 112. The upper end of the electric main shaft 112 is connected to the first turntable 113. The specific connection method can be: the upper end of the electric main shaft 112 is connected to the lower end surface of the first turntable 113 through a plurality of bolts. Using bolt connection is mainly for convenient disassembly and assembly. The lower end of the electric main shaft 112 is connected to the output end of the driving mechanism. The driving mechanism can drive the electric main shaft 112 to rotate. The driving mechanism includes a first motor 115 and a transmission chain. The first motor 115 is fixed on the base 111. The transmission chain is respectively connected to the output shaft of the first motor 115 and the electric main shaft 112. The transmission mode of the transmission chain can be gear transmission, belt transmission, or sprocket transmission. There are four installation positioning holes at the bottom of the base 111 for fixing to the ground during installation, playing a certain stabilizing role.

[0041] The electromagnetic positioning pin 114 is arranged on the base 111, and a positioning hole is arranged on the electric spindle 112. The electromagnetic positioning pin 114 is electrically connected to the control device 5. When the control device 5 controls the electromagnetic positioning pin 114 to be energized, the electromagnetic attractor in the electromagnetic positioning pin 114 makes the positioning pin disengage from the positioning hole. When the control device 5 controls the electromagnetic positioning pin 114 to be de-energized, the positioning pin in the electromagnetic positioning pin 114 is inserted into the positioning hole. The driving mechanism is electrically connected to the control device 5, and the centrifugal acceleration simulation component 120 and the electromagnetic shielding component 130 are arranged on the first turntable 113.

[0042] The dual-environment force simulation device 1 also includes a high-speed multi-channel antistatic electric slip ring, which is installed on the electric spindle 112. In this embodiment, the high-speed multi-channel antistatic electric slip ring has at least 18 groups of channels. The inertial acceleration simulation component 110, the centrifugal acceleration simulation component 120 and the electromagnetic shielding component 130 are respectively electrically connected to the inner group of the high-speed multi-channel antistatic electric slip ring, and the outer group of the high-speed multi-channel antistatic electric slip ring is electrically connected to the control device 5, and the outer group of the high-speed multi-channel antistatic electric slip ring is also electrically connected to the power supply.

[0043] The centrifugal acceleration simulation component 120 includes an angle motor 121, a second turntable 122, a base 123 and a rotating motor 124. The angle motor 121 is arranged on the first turntable 113, the second turntable 122 is arranged above the first turntable 113 and is connected to the output shaft of the angle motor 121, the rotation center line of the second turntable 122 is parallel to the rotation center line of the first turntable 113, the base 123 is arranged on the second turntable 122, and a solenoid 1231 for rotating with a radio fuse is rotatably provided in the base 123, the rotating motor 124 is arranged on the base 123, and the output shaft of the rotating motor 124 is connected to the solenoid 1231, the rotation center line of the solenoid 1231 is perpendicular to and intersects with the rotation center line of the first turntable 113; the angle motor 121 and the rotating motor 124 are electrically connected to the control device 5 respectively.

[0044] Since the test object is a radio fuze, when performing the dual-environment force release test, the battery changes from a standby state to an activated state. In order to prevent external interference with the radio fuze, especially affecting the detection of the proximity function, an electromagnetic shielding component 130 is designed.

[0045] Considering that the dual environment force release safety test needs to be in a shielded state, after the safety is released, when the near explosion function test is performed, the shielded state needs to be released. According to this functional requirement, the electromagnetic shielding assembly 130 is designed to include an anti-static sleeve 131 and a first linear motion mechanism 132. The first linear motion mechanism 132 is arranged on the first rotating disk 113. The anti-static sleeve 131 is a columnar structure with a hollow interior and an open end. The opening of the anti-static sleeve 131 The end of the antistatic sleeve 131 faces the screw tube 1231, and the antistatic sleeve 131 is driven by the first linear motion mechanism 132 so that the electronic head of the radio fuse rotated on the screw tube 1231 enters into the antistatic sleeve 131 through the open end of the antistatic sleeve 131 and completely detaches from the antistatic sleeve 131; the first linear motion mechanism 132 is electrically connected to the control device 5, specifically: the first linear motion mechanism 132 is electrically connected to the inner group of the high-speed multi-channel antistatic electric slip ring, and the outer group of the high-speed multi-channel antistatic electric slip ring is electrically connected to the control device 5.

[0046] To test the proximity function of the radio fuze, it is necessary to transmit an analog signal to the radio fuze that radiates radio waves in order to generate a Doppler signal and start the detonation mechanism of the radio fuze. For this purpose, a proximity signal simulation device 2 is added, wherein the proximity signal simulation device 2 includes a reflecting plate 210 and a movable electric track 220. The movable electric track 220 is arranged on the ground, and the reflecting plate 210 is arranged on the movable electric track 220. The reflecting plate 210 is at the same height as the electronic head of the radio fuze. The movable electric track 220 drives the reflecting plate 210 to move in a direction parallel to the rotation center line of the spiral tube 1231; the reflecting plate 210 and the movable electric track 220 are electrically connected to the control device 5 respectively, and the electromagnetic wave of the reflecting plate 210 and the electromagnetic wave of the electronic head of the radio fuze run in opposite directions and are superimposed, so as to generate a Doppler effect, so that the proximity function of the radio fuze works.

[0047] If the radio fuze fails in proximity explosion during the proximity explosion function test, it cannot be determined that the radio fuze has failed, because it also has a collision explosion function. This requires the design of a collision explosion simulation test device 3. To ensure safety and reliability, it is designed to include a robot 310, a disassembly clamp 320 and a collision explosion throwing tube 330. The disassembly clamp 320 is set on the robot 310. The robot 310 removes the radio fuze on the screw tube 1231 through the disassembly clamp 320 and puts it into the collision explosion throwing tube 330.

[0048] The disassembly jaw 320 includes a driving motor 321, a driving gear 322, a compressor 323, a sleeve 324, a tapered tube 325, and a four-jaw chuck 326. The compressor 323 is fixedly arranged on the robot 310. The four-jaw chuck 326 is connected to the compressor 323 through the sleeve 324. The tapered tube 325 is sleeved on the sleeve 324. The driving motor 321 is fixedly arranged on the compressor 323. The driving gear 322 is connected to the output shaft of the driving motor 321. Tooth grooves meshing with the driving gear 322 are arranged on the outer circumferential surface of the tapered tube 325.

[0049] The robot 310 includes a second linear movement mechanism 311, a lower riser 312, a lifter 313, an upper riser 314, a cross arm 315, a fixed bushing 316, and a deflection motor 317. The lower riser 312 is vertically arranged on the second linear movement mechanism 311. The upper riser 314 is connected to the lower riser 312 through the lifter 313. The cross arm 315 is horizontally fixed to the upper end of the upper riser 314 through the fixed bushing 316. The deflection motor 317 is arranged at the end of the cross arm 315. The output shaft of the deflection motor 317 is connected to the sleeve 324 to drive the disassembly jaw 320 to rotate.

[0050] The signal acquisition device 4 includes a radio wave signal acquisition module 410, a detonator explosion signal acquisition module 420, a large rotation speed signal acquisition module 430, a fuze self-rotation speed signal acquisition module 440, and a time measurement module 450. The radio wave signal acquisition module 410, the detonator explosion signal acquisition module 420, the large rotation speed signal acquisition module 430, the time measurement module 450, and the fuze self-rotation speed signal acquisition module 440 are respectively electrically connected to the control device 5. In this embodiment, the control device 5 includes a central controller 510 and a computer 520. Among them, the radio wave signal acquisition module 410, the detonator explosion signal acquisition module 420, the large rotation speed signal acquisition module 430, the fuze self-rotation speed signal acquisition module 440, the time measurement module 450, the first motor 115, the electromagnetic positioning pin 114, the corner motor 121, the rotation motor 124, the first linear movement mechanism 132, the reflector 210, the movable electric track 220, the deflection motor 317, the compressor 323, the driving motor 321, and the second linear movement mechanism 311 are respectively electrically connected to the central controller 510, and the central controller 510 is electrically connected to the computer 520.

[0051] The impact-fused throwing tube 330 includes a throwing conduit 331, an anvil bottom box 332, a switch cover 333, and a rotating motor 334. The throwing conduit 331 is arranged above the anvil bottom box 332, and the lower end of the throwing conduit 331 communicates with the inner cavity of the anvil bottom box 332. The rotating motor 334 is disposed on the throwing conduit 331. The switch cover 333 is arranged at the opening at the upper end of the throwing conduit 331 and is connected to the output shaft of the rotating motor 334. During the rotation process, the rotating motor 334 causes the switch cover 333 to open and close the opening at the upper end of the throwing conduit 331.

[0052] After the battery in the fuse is activated and after the timer delay time, when the electronic head emits electromagnetic waves of 410 MHz, the radio wave signal acquisition module 410 accurately receives the electromagnetic wave information of 410 MHz, then feeds it back to the computer 520 via the central controller 510, and shuts down (stops timing) the chronograph in the program. The computer 520 gives a driving signal to the movable electric track 220 through the central controller 510, causing the reflector 210 to move towards the fuse. At the same time, the computer 520 gives a working signal to the reflector 210 through the central controller 510. The acquisition of this electromagnetic wave is an important indicator of the fuse test quality.

[0053] The steps for the radio wave signal acquisition module 410 to process the signal are as follows:

[0054] After the 410 MHz signal is received, it is amplified and tested to form a low-frequency signal, which is sent to the execution stage and outputs three trigger signals simultaneously: stopping the chronograph, the computer 520 displays the electromagnetic wave reception result (the red light turns green), and at the same time gives a working signal to the proximity-fused signal simulation device 2, causing the reflector 210 to move towards the fuse and emit electromagnetic waves; if no signal is received (the red light does not turn green), then the fuse is defective.

[0055] The main function of the detonating charge explosion signal acquisition module 420 is in the proximity-fused test of the radio fuse. When the electromagnetic wave of the reflector 210 and the electromagnetic wave emitted by the fuse electronic head generate a Doppler signal moving towards each other, triggering the proximity-fused action of the fuse, that is, using a sound sensor to effectively and reliably collect the explosion sound generated by the fuse and feedback it to the computer terminal. The acquisition of this explosion sound is an important indicator of the fuse test quality and an important criterion for judging the reliability of the booster train action. The explosion sound of the fuse collected by the detonating charge explosion signal acquisition module 420 is an analog signal. The resolution of the microphone in the detonating charge explosion signal acquisition module 420 is adjustable from 20 db to 80 db. After collection, the signal is amplified and detected and sent to the execution stage and fed back to the computer 520 via the central controller 510 to display the test result (the red light turns green). If no explosion sound signal is received (the red light does not turn green), then the fuse is defective.

[0056] The time measurement module 450 mainly measures the time set by the timer in the radio fuse to judge the quality of the long-distance arming function of the radio fuse, which is an important indicator of the safety and reliability of the radio fuse. The measurement range is 12S to 120S, and the accuracy is 10 -2 seconds. The starting point of the chronograph: timing starts at the 3S step after the first turntable 113 starts to rotate, and stops after the electromagnetic wave of 410MHz of the radio fuse is collected. That is, the time period between the start and stop is the time set by the timer (the error value is -6 seconds before and +9 seconds after).

[0057] The time measurement module 450 mainly consists of a sine signal generator, a signal conversion circuit, a gate circuit, and a counter. The function of the sine signal generator is to generate a sine wave signal with a frequency of 1KHZ. The signal conversion circuit consists of a Schmidt circuit, a differential circuit, an inverting amplifier circuit, etc. Its function is to convert the sine wave into a square wave signal through the Schmidt circuit, then convert the square wave signal into positive and negative pulse signals through the differential circuit, and then invert and amplify the positive pulse signal through the inverting amplifier circuit to become the unidirectional negative pulse signal required by the counter. The negative pulse wave signal with a time interval of 10ms is sent to the counter through the trigger circuit. The counter calculates the number of incoming pulses and converts it into time and then outputs it to the computer 520 for display. The gate circuit is a bistable circuit similar to a "gate" used to control whether the negative pulse enters the counter. When the "gate" is open, the negative pulse can enter the calculator. When the "gate" is closed, the negative pulse cannot enter the calculator. The opening and closing of the "gate" are controlled by the "start" and "close" signals sent when the first turntable 113 on the first motor 115 rotates (reaches the highest set rotation speed) until the electromagnetic wave is received.

[0058] The high-speed rotation signal acquisition module 430 is used to acquire the rotation speed of the first motor 115. Usually, the high-speed rotation signal acquisition module 430 can be an optoelectronic speed measurement sensor; the self-rotation speed signal acquisition module 440 of the fuse is used to acquire the rotation speed of the rotating motor 124. Usually, the self-rotation speed signal acquisition module 440 of the fuse can be an optoelectronic speed measurement sensor.

[0059] Taking the DRD23 fuse as an example of the radio fuse, specific parameters are set as follows:

[0060] According to the arming combat technology requirements of the radio fuse, for the DRD23 fuse, its inertial acceleration requirement reaches 30g, the centrifugal acceleration reaches 24g, and the electromagnetic wave emitted by the electronic head of the DRD 23 fuse is 410MHz. Comprehensive function reliability tests are carried out on the entire system (excluding the detonator) of the DRD 23 fuse.

[0061] The fuse of the Type DRD 23 multiple rocket launcher, with the code name DRD23, is used for the fragmentation explosive grenade of the Type 1981 122-mm multiple rocket launcher. The fuse of the Type DRD 23 multiple rocket launcher is a decimeter-wave Doppler fuse, which has functions of dual environmental force arming, long-distance power-on, impact detonation and proximity detonation. The fuse consists of high-frequency components, low-frequency components, power supply, trigger mechanism, setting mechanism, recoil safety mechanism, centrifugal safety mechanism, clockwork mechanism with non-return torque governor, long-distance power-on mechanism, rotor explosion isolation mechanism and detonating train, etc. Usually, the electrolyte of the thermal battery power supply is in a solid state, the power supply does not work, the first turntable is locked in the explosion isolation position by the centrifugal pin and the stop lever, and the radio fuse is in the safety state.

[0062] The tactical and technical indicators of the DRD 23 fuse are as follows:

[0063] Safe dropping height: 3 m (head up, test projectile and fuse mass 8.5 kg); 2 m (head down, lying horizontally, test projectile and fuse mass 8.5 kg); First safety: recoil; Second safety: centrifugal; Arming distance: at the end of the active section; Normal operation rate: ≥85% (proximity detonation); Failure rate: ≤5% (including early detonation and misfire); Detonation height: 6 m - 13 m (group average, impact angle 9° - 62°, ground with medium reflection intensity); 0.5 m - 30 m (single shot); Long-distance power-on time range: 6 s - 120 s; Long-distance power-on time interval: 3 s; Operating temperature: -40°C - +50°C; Storage life: 15 years.

[0064] Its operation process is as follows:

[0065] Before firing, the proximity power-on time or impact setting of the radio fuse should be set according to the needs of the shooting target.

[0066] At the time of launch, under the action of the recoil force, the inertial slider compresses the slider spring and moves downward by a certain distance, then releases the driving part of the timepiece mechanism. Under the control of the timepiece mechanism, the driving plate rotates to the correct position after about 0.8 s. At the same time, the centrifugal pin retracts under the action of the centrifugal acceleration, releases the first turntable, and releases the safety of the first turntable; after the driving plate rotates to the correct position, it releases the safety plate. Under the action of the torque, the safety plate shaft quickly rotates through a certain safety angle, releases the activation firing pin; the activation firing pin pokes upward at the percussion cap in the striker under the action of the resistance of the activation spring, and the gunpowder gas generated by the ignition of the percussion cap pushes the striker to impact the percussion cap installed at the bottom of the battery, activating the battery; while the activation firing pin pokes upward at the percussion cap, it releases the stop lever that locks the trigger mechanism, releases the first safety of the first turntable. At this time, the slider pin is still stuck in the safety hole of the first turntable under the action of the recoil force, the first turntable is still in the explosion isolation position, the radio fuse is in the safety state, and the activated battery starts to supply power to the timer. The timer works. Before the set time of the timer is reached, the high- and low-frequency circuits do not work, and the radio fuse will not be affected by any internal or external interference and is in a safe state.

[0067] At the end of the active section, when the recoil force on the slider is less than the remaining resistance force of the slider spring after overcoming other resistance forces, the slider moves upward under the push of the resistance force of the slider spring, the pin releases the second safety of the first turntable, the first turntable rotates to the correct position, and the detonation train is aligned. The radio fuse is in the armed state. At this time, although the radio fuse has been released from safety, before the pre-set power-on time is reached, the high- and low-frequency circuits still do not work, and the radio fuse will still not be affected by internal and external interference.

[0068] When the set power-on time is reached, the timer applies the power supply voltage to the electronic components of the radio fuse, and the high-frequency part starts to radiate electromagnetic waves into space. The energy storage capacitor C of the ignition circuit in the low-frequency circuit starts to charge. After about 2 s, the stored energy on the capacitor C is sufficient to detonate the electric detonator, and the proximity action part is in the armed state.

[0069] When approaching the target, the electromagnetic waves radiated by the radio fuse are reflected by the target and then received by the radio fuse antenna. After detection, a Doppler signal is output. The low-frequency circuit identifies the signal frequency and amplitude. When the projectile reaches the predetermined height, the ignition circuit outputs an ignition pulse to detonate the detonator, and the radio fuse functions.

[0070] When the proximity function of the radio fuse fails, when the projectile impacts the target, the impact switch closes or the trigger mechanism acts, and the radio fuse functions. It is also possible to directly select the trigger action according to needs. When the projectile impacts the target, the trigger mechanism acts, and the radio fuse functions.

[0071] Controlling the 122 mm rocket projectile to act at the predetermined burst height and also being able to act by impact when the proximity function fails is a weak link in the overall life of the projectile.

[0072] For the size of the first turntable 113, the matching design of the rotational speed and the radius of the first turntable 113 needs to be considered. According to the centrifugal acceleration calculation formula A = 0.0112Rn² (where A is the constant acceleration unit g, R is the fuze installation calculation radius unit m, and n is the fuze rotation speed unit r / min), it can be seen from the formula that when A is a constant value, R and n are inversely proportional.

[0073] The larger R is, the more difficult it is to control the stability during rotation, and the larger the occupied space; the smaller R is, the higher the required rotational speed, the higher the requirement for the motor rotational speed, and the higher the shear capacity of the corresponding installation components. Considering reliability and safety comprehensively, the method of small radius and medium rotational speed is adopted. When the fuze installation radius is R = 0.248m and n = 330r / min, according to: A = 0.0112Rn², that is: A = 0.0112Rn² = 0.0112×0.248×(330)² = 302.5, G = 302.5 / 9.8 = 30.86g, that is; the linear acceleration overload applied to the radio fuze under these distance and rotational speed conditions is 30.86g, which meets the 30g acceleration required to release the inertial insurance. To ensure the installation and facilitate the processing of the radio fuze, the radius of the entire large first turntable 113 is determined to be R1 = 0.3m, and the base 111 is installed at R = 0.248m. To ensure the stability of the equipment during rotation without shaking, equal-weight counterweight blocks 6 are designed on the same diameter of the first turntable 113 as the base 111 and installed symmetrically with the base 111.

[0074] Calculation of the rotational speed design of the first motor 115

[0075] One is the power problem. It is necessary to ensure that the motor can drive the first turntable 113 to reach the specified rotational speed; the motor power needs to be 5.5kW, and the specific motor model GRF01, 7.5kW can be selected;

[0076] The second is the starting time problem. It is necessary to ensure that the starting time is as short as possible, so that the simulated inertial acceleration is closer to the real value. After many tests, the acceleration starting time of 3s is the most appropriate, and the 3rd second of its start is used as the starting time of the radio fuze timer, and the control device 5 starts timing;

[0077] The third is the speed adjustable problem. Considering the function expansion problem of the device, in addition to simulating the inertial acceleration of the rocket projectile radio fuze, it is also hoped to simulate the inertial acceleration during the launch of the mortar shell. Therefore, the frequency conversion technology is applied to effectively increase and control the rotational speed of the motor by setting the frequency to change the number of pole pairs.

[0078] According to the formula:

[0079] n1 = 60s1(1 - s2) / p1 (1)

[0080] n = fn / p2 × n1 (2)

[0081] Where: n1 - basic rotational speed; p1 - number of poles of a conventional motor

[0082] s2 - basic parameter quantity; s1 - power supply frequency

[0083] fn - highest frequency; n - highest rotational speed

[0084] According to the above formula, the parameters obtained from design calculation and table lookup are as follows:

[0085] p1 = 2; p2 = 28 (number of pole pairs after frequency conversion)

[0086] s2 = 0.1 (parameter obtained from table lookup)

[0087] s1 = 50Hz (mains frequency); fn = 60Hz (design frequency)

[0088] Substituting into equation (1) gives

[0089] n1 = 60s(1 - s) / p1 = 60×50(1 - 0.1) / 2 = 1350r / min

[0090] Substituting into equation (2) gives

[0091] n = fn * n1 / p2 = 60 * 1350 / 28 = 2900 (r / min)

[0092] Through the above calculation, the highest rotational speed of the first turntable 113 is 2900r / min, that is, the stepless speed regulation range of the first turntable 113 is 0r / min to 2900r / min, meeting the requirement of 330r / min for the test, and also meeting the simulation requirement of 300g acceleration expansion for the mortar shell fuze.

[0093] In order to ensure reliable arming release of this radio fuze, it is required that the centrifugal acceleration generated by its own rotational speed is at least 15g. Considering the installation position of the centrifugal acceleration simulation component 120, the rotational speed is calculated as follows:

[0094] R = 0.015m

[0095] n = 1200r / min

[0096] According to: A = 0.0112Rn 2 G = A / 8

[0097] That is: A = 0.0112R×0.015 = 242

[0098] G = 242 / 9.8 = 24.7g

[0099] That is, under this rotational speed condition, the centrifugal acceleration overload of the radio fuse is 24.7g because the distance of the centrifugal slider in the radio fuse from the center is 0.015m. This is greater than its centrifugal safety release acceleration of 24g, meeting the requirement for centrifugal safety release. Therefore, the rotational speed of the selected rotary motor 124 is above 1200 r / min. The rotary motor 124 can be a DC variable-speed motor, and its model can be SBD-CI08-W. The rotary motor 124 serves as the power to drive the radio fuse to perform a rotary motion through the rotary base 123. The radio fuse under test is installed on the central screw tube 1231 of the rotary base 123 (rotating counterclockwise, the radio fuse becomes tighter on the base 123 to avoid falling off during high-speed rotation).

[0100] The electromagnetic wave emitted by the reflector 210 is 500 Hz and has a height of 1.5 meters (the same height as the radio fuse on the first turntable 113). During operation, the mobile electric track 220 drives the reflector 210 to move towards the radio fuse. The moving distance is 4.5 meters, and the moving speed of the reflector 210 is 0.3 m / s. During the test, according to the requirements of the test method, the reflector 210 can make two moving operations towards the electronic head of the radio fuse to ensure the reliable realization of the proximity fuse function of the radio fuse.

[0101] The central controller 510 (microprocessor) is the core of the entire electronic control system. It distributes various instructions sent by the computer 520 to each functional module according to the set program requirements, enabling them to effectively perform their functions. It also feeds back the operation and completion status of each functional module to the computer 520, enabling the computer 520 to correctly judge whether the working state of the test equipment is normal, making the entire working system operate in a virtuous cycle. It can also detect error messages and instructions, has an error correction function, and can automatically terminate the program operation to prevent the expansion of faults and minimize losses. The central controller 510 we currently use is ADuC812, which integrates a 12-bit data acquisition system. It has online debugging and downloading functions. It communicates with the serial port of ADuC812 through the development system to directly debug the user system, and directly downloads the debugged program to ADuC812 after debugging, having good configuration, operability, and function expandability.

[0102] Visual Basic is used as a development platform in computer 520 to develop a fully automatic control system. The design of the entire software system adopts object-oriented technology, directly reads and writes ports, shortens the development cycle, can accurately collect instantaneous values, effective values, etc. of data. Live-fire tests and application scenarios show that the system works stably, is easy to operate, can adapt to various application scenarios of control systems, and can greatly improve the efficiency of test work (this system can adapt to Windows series window platforms). The system also has the following functions: an automatic backup function to prevent data loss caused by accidental accidents during operation, various protection measures, and because the control system uses DDP technology, it not only effectively utilizes DOS code resources, shortens the development cycle, but also the established communication classes and data class information have good reusability, facilitating the development of new modules and the upgrade of programs.

[0103] The effects of the present invention are as follows:

[0104] 1) High simulation degree

[0105] Previous special detection equipment could only conduct arming inspection on the core components of fuzes under high starting speed conditions. The present invention can detect the entire fuze while maintaining the technical state unchanged (without any disassembly and modification, maintaining the original state inside the fuze), and designs to increase the strength and torque of the large turntable, thereby greatly increasing the starting speed, and can quickly reach the arming overload within 2 to 3 seconds, highly simulating the double environmental conditions experienced by the rocket fuze during the projectile launch process;

[0106] 2) Simple operation

[0107] The operation is very simple and convenient. After inputting the corresponding test parameters, with one-key operation, different types of products such as electronic time fuzes, radio fuzes, and mechanical trigger fuzes can be tested under the same test cavity and the same interface relationship by installing different protective sleeves (cylinders). The test method is feasible, easy to use, and the safety measures are appropriate. The design of the entire system adopts object-oriented technology, directly reads and writes ports, can accurately collect instantaneous values, effective values, etc. of data. The implementation of each function of the system is controlled by a computer, and one type of fuze corresponds to one running program. The system can also preset the running key to complete the test task, and a single operator can complete the replacement and detection of multiple fuzes by hand;

[0108] 3) High safety and reliability

[0109] It can ensure the safety of operators and equipment during the test process, improve work reliability, and reduce the failure rate;

[0110] 4) High test accuracy

[0111] The detection device is equipped with a complete automatic detection system for fuzes. In the past, products could only achieve the automatic detection of the electronic head components of fuzes. The detection of the entire fuze still had to be completed by manual setting, human ear sound discrimination, and stopwatch timing. This system can detect the accurate timing starting point of the fuze and the capture of the detonation signal. The hardware timing circuit improves the timing accuracy to milliseconds. The turntable rotation system adopts a closed-loop control system participated by a frequency converter, which can accurately set test parameters and greatly improve the control accuracy of the system.

[0112] 5) High economic benefits

[0113] It can replace real rockets to complete the function detection, fault analysis, inspection and acceptance of fuzes, which will greatly improve the detection efficiency of rocket fuzes and save a large amount of funds for purchasing similar special detection equipment.

[0114] The specific usage process is as follows:

[0115] Screw the radio fuze to be tested onto the central solenoid 1231 of the base 123. Start the first linear movement mechanism 132 so that the anti-static sleeve 131 reliably covers the electronic head of the radio fuze under the drive of the first linear movement mechanism 132. Then, make the rotation motor 124 start to run at the set speed (1200 revolutions per minute for the DRD23 radio fuze), thereby generating the centrifugal force for the radio fuze to arm. After 5 seconds, start the first motor 115, the first turntable 113 starts to rotate, and the timer starts timing. After the running time ends, the first motor 115 and the rotation motor 124 stop running simultaneously. The electric spindle 112 rotates at a low speed, and the electromagnetic positioning pin 114 starts to brake the electric spindle 112. The first linear movement mechanism 132 starts, and the first linear movement mechanism 132 drives the anti-static sleeve 131 to release the electronic head of the radio fuze. Start the corner motor 121, and the corner motor 121 drives the second turntable 122 and the base 123 and the rotation motor 124 installed on the second turntable 122 to deflect 90°, making the fuze electronic head parallel to the reflector 210. At the same time, the radio wave signal acquisition module 410 and the detonating charge explosion signal acquisition module 420 start to work. When the radio wave signal acquisition module 410 receives the electromagnetic wave signal of the radio fuze electronic head, the timer stops timing. The movable electric track 220 starts and drives the reflector 210 to move. The reflector 210 turns on and emits electromagnetic waves with a frequency of 500 Hz. When the detonating charge explosion signal acquisition module 420 receives the explosion sound signal, the computer 520 displays the electromagnetic wave signal, the explosion sound, and the timer time. If there is no explosion sound of the radio fuze, the impact explosion simulation test device 3 starts, and the impact explosion simulation test device 3 removes the radio fuze for impact explosion.

[0116] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A radio fuze simulation test system, characterized in that, it includes a dual environmental force simulation device (1), a proximity detonation signal simulation device (2), a percussion detonation simulation test device (3), a signal acquisition device (4) and a control device (5). The dual environmental force simulation device (1), the proximity detonation signal simulation device (2), the percussion detonation simulation test device (3) and the signal acquisition device (4) are respectively electrically connected to the control device (5). The signal acquisition device (4) is used to collect the electromagnetic wave signals emitted by the electronic head after the battery in the fuze is activated, to collect the explosion sounds generated by the fuze during proximity detonation tests, and to measure the time set by the timer in the radio fuze; The dual environmental force simulation device (1) includes an inertial acceleration simulation component (110), a centrifugal acceleration simulation component (120) and an electromagnetic shielding component (130). The centrifugal acceleration simulation component (120) and the electromagnetic shielding component (130) are respectively arranged on the inertial acceleration simulation component (110). The electromagnetic shielding component (130), the centrifugal acceleration simulation component (120) and the inertial acceleration simulation component (110) are respectively electrically connected to the control device (5); The inertial acceleration simulation component (110) includes a base (111), an electric main shaft (112), a first turntable (113), a driving mechanism and an electromagnetic positioning pin (114). The first turntable (113) is arranged above the base (111). The driving mechanism is arranged on the base (111). The electric main shaft (112) is rotatably arranged on the base (111). Two ends of the electric main shaft (112) are respectively connected to the output end of the driving mechanism and the first turntable (113). The electromagnetic positioning pin (114) is arranged on the base (111). A positioning hole is provided on the electric main shaft (112). During the process of gaining and losing electricity, the internal pin of the electromagnetic positioning pin (114) alternately disengages from and inserts into the positioning hole. The driving mechanism and the electromagnetic positioning pin (114) are respectively electrically connected to the control device (5). The centrifugal acceleration simulation component (120) and the electromagnetic shielding component (130) are arranged on the first turntable (113); The centrifugal acceleration simulation component (120) comprises an angular motor (121), a second turntable (122), a base (123) and a rotating motor (124), wherein the angular motor (121) is arranged on the first turntable (113), the second turntable (122) is arranged above the first turntable (113) and connected to the output shaft of the angular motor (121), and the rotation centerline of the second turntable (122) is aligned with the rotation centerline of the first turntable (113). The rotation center lines are colinear, the base (123) is arranged on the second turntable (122), a solenoid (1231) for rotating with a radio fuse is rotatably arranged in the base (123), the rotating motor (124) is arranged on the base (123), and the output shaft of the rotating motor (124) is connected to the solenoid (1231); the angle motor (121) and the rotating motor (124) are respectively electrically connected to the control device (5); The electromagnetic shielding component (130) comprises an antistatic sleeve (131) and a first linear motion mechanism (132); the first linear motion mechanism (132) is arranged on the first rotating disk (113); the antistatic sleeve (131) is arranged on the first linear motion mechanism (132); the antistatic sleeve (131) is a columnar structure with a hollow interior and an open end; the open end of the antistatic sleeve (131) faces the spiral tube (1231); the antistatic sleeve (131) is driven by the first linear motion mechanism (132) so that the electronic head of the radio fuse screwed on the spiral tube (1231) enters the antistatic sleeve (131) through the open end of the antistatic sleeve (131) and completely detaches from the antistatic sleeve (131); the first linear motion mechanism (132) is electrically connected to the control device (5); The near-explosion signal simulation device (2) comprises a reflection plate (210) and a movable electric track (220), wherein the movable electric track (220) is arranged on the ground, the reflection plate (210) is arranged on the movable electric track (220), the reflection plate (210) is at the same height as the electronic head of the radio fuse, and the movable electric track (220) drives the reflection plate (210) to move in a direction parallel to the rotation center line of the solenoid (1231); the reflection plate (210) and the movable electric track (220) are respectively electrically connected to the control device (5); The explosion simulation test device (3) comprises a robot (310), a disassembly clamp (320) and an explosion throwing tube (330), wherein the disassembly clamp (320) is arranged on the robot (310), and the robot (310) removes the radio fuse on the spiral tube (1231) through the disassembly clamp (320) and puts the radio fuse into the explosion throwing tube (330).

2. A radio fuze simulation test system according to claim 1, It is characterized in that The disassembly jaw (320) includes a drive motor (321), a driving gear (322), a compressor (323), a sleeve (324), a tapered tube (325), and a four-jaw chuck (326). The compressor (323) is fixedly arranged on the robot (310). The four-jaw chuck (326) is connected to the compressor (323) through the sleeve (324). The tapered tube (325) is sleeved on the sleeve (324). The drive motor (321) is fixedly arranged on the compressor (323). The driving gear (322) is connected to the output shaft of the drive motor (321). Tooth grooves meshing with the driving gear (322) are arranged on the outer circumferential surface of the tapered tube (325).

3. A radio fuse simulation test system according to claim 2, characterized in that the impact detonation throwing tube (330) includes a throwing conduit (331), an anvil bottom box (332), a switch cover (333), and a rotating motor (334). The throwing conduit (331) is arranged above the anvil bottom box (332), and the lower end of the throwing conduit (331) communicates with the inner cavity of the anvil bottom box (332). The rotating motor (334) is arranged on the throwing conduit (331). The switch cover (333) is arranged at the upper opening of the throwing conduit (331) and is connected to the output shaft of the rotating motor (334). During the rotation process, the rotating motor (334) causes the switch cover (333) to open and close the upper opening of the throwing conduit (331).

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