CN208313143U - A kind of bispin guided cartridge seeks ground detection system - Google Patents
A kind of bispin guided cartridge seeks ground detection system Download PDFInfo
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- CN208313143U CN208313143U CN201820516741.9U CN201820516741U CN208313143U CN 208313143 U CN208313143 U CN 208313143U CN 201820516741 U CN201820516741 U CN 201820516741U CN 208313143 U CN208313143 U CN 208313143U
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Abstract
The utility model discloses a kind of bispin guided cartridges to seek ground detection system, including infrared detection system, transformation amplification system, signal processing system and power-supply system, infrared detection system includes optical system and infrared detector, converting amplification system includes filter circuit and amplifying circuit, the signal processing system includes microprocessor, and power-supply system includes ± 5V power conversion module and 3.3V power conversion module.The detection system sought by infrared acquisition space temperature field ground, have the advantages that fast response time, noenergy consumption and can real-time measurement, thus enhance guided cartridge concealment and guide accuracy.
Description
Technical field
The utility model belongs to shell detection technique field, and in particular to a kind of bispin guided cartridge seeks ground detection system.
Background technique
Since World War II Germany develops first and takes the lead in using seeker in war, process more than 70
The development in year, guided weapon type is more and more, and increasingly important role is played in modern war.
It is to need to provide the earth direction in real time for shell control system in guidance section with seeking, is shell control system adjustment appearance
One standard parameter of state, posture adjustment process are as follows: shell searches target in guidance section, generates guidance by guidance system and refers to
It enables, is then parsed and generated control instruction to it by control system, detect subsequent time the earth direction when seeking ground device,
Control instruction can be sent to executing agency and carry out pose adjustment by control system, realize precise guidance, therefore, seek the accuracy on ground
Response and precision for control system influence very big.
Currently, commonly seek ground method have gyroscope seek and earth magnetism seek ground, both methods can for Far Range and
The little heavy caliber shell of launching acceleration and missile control system provide relatively accurate ground reference information, however, its nothing
Method is applied to the bispin guided cartridge of small-bore, small range, this is because not having dynamical system, range in bispin guided cartridge
The size for significantly depending on initial velocity, (g is gravity acceleration to the acceleration with about 8000g~10000g
Degree)；According to general micro-electro-mechanical gyroscope, since unbearable so huge acceleration, micro-electro-mechanical gyroscope can sent out
Penetrate moment loss of stability, or even damage；According to bulky mechanical gyroscope, since the volume in shell control storehouse has very much
Limit, thus can not be installed.Secondly as the range of bispin guided cartridge is close and penetrates high small, the side on ground is sought according to earth magnetism
Method, metal bridge, the metallic ore on ground etc. can generate large effect to it, can not provide accurate ground reference information.Therefore,
Design that a kind of cost is relatively low, strong anti-interference performance, precision are high and is able to satisfy the guided cartridge of shell volume requirement seeks ground mode and have
There is important meaning.
Utility model content
The purpose of the utility model is to provide a kind of bispin guided cartridges to seek ground detection system, enhances the hidden of guided cartridge
Covering property and accuracy.
The utility model is the technical scheme adopted is that a kind of bispin guided cartridge seeks ground detection system, including infrared spy
Examining system, transformation amplification system, signal processing system and power-supply system, infrared detection system include optical system and infrared acquisition
Device, transformation amplification system includes filter circuit and amplifying circuit, and signal processing system includes microprocessor, and power-supply system includes ±
5V power conversion module and 3.3V power conversion module, infrared detector and filter circuit are electrically connected, filter circuit and amplification
Circuit is electrically connected, and amplifying circuit and microprocessor are electrically connected；± 5V power conversion module respectively with filter circuit and amplification
Circuit is electrically connected；3.3V power conversion module and microprocessor are electrically connected.
The utility model is also characterized by
Microprocessor is STM32F4 series monolithic.
Optical system is Cassegrain optical system.
The model HMS-Z11 of infrared detector.
Filter circuit and amplifying circuit, including one end and the infrared detector thermocouple of resistance R1 and resistance R2, resistance R2
The anode of output voltage is connected, the other end of resistance R2 respectively with one end of capacitor C2, one end of capacitor C3, instrument amplifier A1
Noninverting input is connected, and one end of resistance R1 is connected with the cathode of infrared detector thermocouple output voltage, and resistance R1's is another
End is connected with another noninverting input of the other end of capacitor C2, one end of capacitor C1, instrument amplifier A1 respectively, instrument amplifier
The power supply anode of A1 is connect with one end of+5V voltage, one end of capacitor C4, capacitor C5 respectively, the power supply of instrument amplifier A1
Power supply negative terminal is connect with one end of -5V voltage, one end of capacitor C6, capacitor C7 respectively, the output end and resistance of instrument amplifier A1
One end of R4 is connected, and the other end of resistance R4 is connected with one end of one end of resistance R5, capacitor C8 respectively, the other end of capacitor C8
Connect respectively with the output end of the reverse input end of amplifier A2, amplifier A2, the other end of resistance R5 respectively with one end of capacitor C9,
The noninverting input of amplifier A2 connects, the power supply anode of amplifier A2 respectively with+5V voltage, one end of capacitor C12, capacitor
One end of C13 connects, and the power supply negative terminal of amplifier A2 connects with one end of -5V voltage, one end of capacitor C10, capacitor C11 respectively
It connects, one end of infrared detector thermistor is connect with the noninverting input of one end of resistance R6, amplifier A3 respectively, resistance R6's
The other end is connect with the power supply anode of+5V power supply, one end of capacitor C16, one end of capacitor C17, amplifier A3 respectively, amplifier
The power supply negative terminal of A3 is connect with one end of -5V power supply, one end of capacitor C14, capacitor C15 respectively, the output end of amplifier A3
It is connected with reverse input end；Capacitor C1, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C9, capacitor C10, electricity
Hold the another of C11, capacitor C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16 capacitor C17 and infrared detector thermistor
One end is grounded respectively.
The capacitor of capacitor C2 is much larger than the capacitor of capacitor C1 and capacitor C3, resistance R1, resistance R2, capacitor C1 and capacitor C3
Value is all the same.
The pin both ends bridging of instrument amplifier A1 has resistance R3.
The utility model has the beneficial effects that seeking ground by infrared acquisition space temperature field, there is fast response time, nothing
Energy consumption and can real-time measurement the advantages of, meanwhile, infrared acquisition have preferable concealment and anti-interference ability, to enhance
The concealment and guidance accuracy of guided cartridge.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of bispin guided cartridge of the utility model seeks ground detection system；
Fig. 2 is that a kind of bispin guided cartridge of the utility model seeks the circuit of filter circuit and amplifying circuit in ground detection system
Figure；
Fig. 3 is the radiation that a kind of bispin guided cartridge of the utility model seeks absolute black body under different temperatures in ground detection system
Emittance graph of relation；
Fig. 4 is the transmission rate and wave for the middle infrared sensor that a kind of bispin guided cartridge of the utility model seeks ground detection system
Long graph of relation.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of bispin guided cartridge of the utility model seeks ground detection system, as shown in Figure 1, including infrared detection system, becoming
Amplification system, signal processing system and power-supply system are changed, infrared detection system includes optical system and infrared detector, and transformation is put
Big system includes filter circuit and amplifying circuit, and signal processing system includes microprocessor and peripheral circuit, and power-supply system includes
± 5V power conversion module and 3.3V power conversion module.
Infrared detector is located at the focal spot of optical system；
Infrared detector and filter circuit are electrically connected, and filter circuit and amplifying circuit are electrically connected, amplifying circuit with it is micro-
Processor is electrically connected；
± 5V power conversion module is electrically connected with filter circuit and amplifying circuit respectively；
3.3V power conversion module and microprocessor are electrically connected；
Microprocessor is STM32F4 single-chip microcontroller；
Optical system is Cassegrain optical system；
The model HMS-Z11 of infrared detector.
The circuit diagram of filter circuit and amplifying circuit, as shown in Fig. 2, including resistance R1 and resistance R2, one end of resistance R2
Be connected with the anode of infrared detector thermocouple output voltage, the other end of resistance R2 respectively with one end of capacitor C2, capacitor C3
One end, instrument amplifier A1 noninverting input be connected, one end of resistance R1 and infrared detector thermocouple output voltage it is negative
Extremely be connected, the other end of resistance R1 respectively with the other end of capacitor C2, one end of capacitor C1, instrument amplifier A1 another in the same direction
Input terminal is connected, and capacitor C1, capacitor C2 and capacitor C3 and resistance R1 and resistance R2 constitute radio frequency filter circuit, instrument amplifier A1
The bridging of pin both ends have resistance R3, amplify the adjustment of multiple by changing resistance R3；The power supply of instrument amplifier A1
Anode is connect with one end of+5V voltage, one end of capacitor C4, capacitor C5 respectively, the power supply negative terminal difference of instrument amplifier A1
It being connect with one end of -5V voltage, one end of capacitor C6, capacitor C7, the output end of instrument amplifier A1 is connected with one end of resistance R4,
The other end of resistance R4 is connected with one end of the one end resistance R5, capacitor C8 respectively, and the other end of capacitor C8 is respectively with amplifier A2's
Reverse input end, amplifier A2 output end connection, the other end of resistance R5 respectively with one end of capacitor C9, amplifier A2 it is in the same direction defeated
Enter end connection, instrument amplifier A1, resistance R4, resistance R5, capacitor C8, capacitor C9 constitute active second-order low-pass filter, amplifier
The power supply anode of A2 is connect with one end of+5V voltage, one end of capacitor C12, capacitor C13 respectively, the power supply electricity of amplifier A2
Source negative terminal is connect with one end of -5V voltage, one end of capacitor C10, capacitor C11 respectively, one end of infrared detector thermistor
Output connect respectively with the noninverting input of one end of resistance R6, amplifier A3, the other end of resistance R6 respectively with+5V power supply, electricity
Appearance one end of C16, one end of capacitor C17, the power supply anode of amplifier A3 are connected, the power supply negative terminal difference of amplifier A3
It is connected with one end of -5V power supply, one end of capacitor C14, capacitor C15, the output end of amplifier A3 is connected with reverse input end, ± 5V
Power supply, resistance R6, amplifier A3, capacitor C14, capacitor C15, capacitor C16 and capacitor C17 constitute voltage follower circuit, for following
The how corresponding voltage signal of current environmental temperature value that thermistor is monitored；
Wherein, the REF pin of instrument amplifier A1 is reference voltage, and main purpose is to raise the voltage of amplification；
The capacitor of capacitor C2 is much larger than the capacitor of capacitor C1 and capacitor C3, and resistance R1, resistance R2, capacitor C1 and capacitor C3 are equal
Belong to structure matching device, value is identical；
Capacitor C1, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C9, capacitor C10, capacitor C11, capacitor
C12, capacitor C13, capacitor C14, capacitor C15, capacitor C16 and capacitor C17 the other end be grounded respectively.
The other end of the thermistor of infrared detector exports ground connection.
A kind of bispin guided cartridge of the utility model seeks ground detection system, and concrete operating principle is:
In use, infrared detection system to be arranged in the bullet front of shell, transformation amplification system and power-supply system are set
It sets in shell control cabinet.
The object of non-absolute zero can generate infra-red radiation outward, when the energy of object under test radiation passes through propagation in atmosphere
When into infrared detection system, optical system is by the energy accumulating to infrared detector, when guided cartridge is in flight course,
Infrared detector can be rotated with the rotation of body, and during rotating a circle, infrared detector will be detected once
The direction of the earth；Since since earth surface, with the rising of convection current layer height, the infrared intensity of earth surface is to pass
Subtract, so infrared detector rotates the temperature field difference detected between 180 ° since the earth direction, and temperature is higher, red
External radiation energy is bigger, then the electric signal of infrared detector output is bigger, and finally infrared detector is defeated in one cycle
An electric signal similar to sine wave out, the electric signal passes through transformation amplification system again later, wherein filter circuit filters out mesh
The noise in signal is marked, the electric signal after amplifying circuit will filter out noise amplifies, and microprocessor is first to amplified signal is converted
Software filtering processing is carried out, the maximum value of electric signal in each cycle is detected later, after microprocessor identifying processing, in electric signal
Peak value or valley moment export a single pulse signal, then it represents that are the directional information of the earth, to be shell control system tune
Whole posture provides a standard parameter.
Optical system in the utility model, main operational principle are to focus infra-red radiation, distant object radiation
On energy accumulating to infrared detector.Since the operating wavelength range of infrared optical system is generally wider, thus select card plug
Green's optical system acts on focused energy by double mirror.
The bispin guided cartridge seeks the detection method on ground, the specific steps are as follows:
Step 1, optical system is by the energy accumulating to infrared detector of object under test, and rear infrared detector uses later
The energy is converted to electric signal U by following calculation formula；
The calculation formula of electric signal U, as shown in formula (1):
S is the susceptibility of infrared detector, and K is Boltzmann constant, εoFor the emission ratio of object under test, ToIt is to be measured
The temperature of object, εsFor the emission ratio of infrared detector, TaFor the environment temperature of infrared detector；
Step 2, the electric signal U in step 1 is filtered, amplifies by transformation amplification system；
Step 3, the electric signal in step 2 is carried out software filtering processing by signal processing system, by AD sample voltage value,
The characteristics of change rate according to electric signal near wave crest or trough is zero, with this detect in each cycle the maximum value of electric signal or
The minimum value moment exports a single pulse signal at the moment, then the direction of the earth can be provided during guidance for shell
Information.
A kind of bispin guided cartridge of the utility model seeks the radiation outgoing of absolute black body under different temperatures in ground detection system
Graph of relation is spent, as shown in figure 3, when object temperature is higher, radiant exitance is bigger in a wavelength range, then it represents that
Infra-red radiation ability is stronger, when detector receives the object radiation energy of different temperatures, the electric signal size that is converted to
Also different.
A kind of bispin guided cartridge of the utility model seeks the transmission rate of the middle infrared sensor of ground detection system and wavelength closes
It is curve graph, as shown in figure 4, being in 8 μm~12 μ ms in wavelength, the energy transmission rate that infrared detector receives is maximum,
Since general earth's surface object radiation energy wave band is mainly in 8 μm~12 μm, so demonstrating the detector can transmit well
The infrared energy of absorption.
A kind of bispin guided cartridge of the utility model seeks ground detection system, and ground is sought by infrared acquisition space temperature field,
Have the advantages that fast response time, noenergy consumption and can real-time measurement, meanwhile, infrared acquisition has preferable concealment and anti-
Interference performance, to enhance the concealment and guidance accuracy of guided cartridge；Meanwhile it should the small volume of system, resistance to compression
Ability is relatively strong and low production cost, can satisfy the performance requirement of detection system.
Claims (7)
1. a kind of bispin guided cartridge seek ground detection system, which is characterized in that including infrared detection system, transformation amplification system,
Signal processing system and power-supply system, the infrared detection system include optical system and infrared detector, the transformation amplification
System includes filter circuit and amplifying circuit, and the signal processing system includes microprocessor, and the power-supply system includes ± 5V
Power conversion module and 3.3V power conversion module, the infrared detector and the filter circuit are electrically connected, the filtering
Circuit and the amplifying circuit are electrically connected, and the amplifying circuit and the microprocessor are electrically connected；± 5V the power supply turns
Block is changed the mold to be electrically connected with the filter circuit and the amplifying circuit respectively；The 3.3V power conversion module and micro- place
Device is managed to be electrically connected.
2. a kind of bispin guided cartridge according to claim 1 seeks ground detection system, which is characterized in that the microprocessor
For STM32F4 single-chip microcontroller.
3. a kind of bispin guided cartridge according to claim 1 seeks ground detection system, which is characterized in that the optical system
For Cassegrain optical system.
4. a kind of bispin guided cartridge according to claim 1 seeks ground detection system, which is characterized in that the infrared acquisition
The model HMS-Z11 of device.
5. a kind of bispin guided cartridge according to claim 1 seeks ground detection system, which is characterized in that the filter circuit
And amplifying circuit, including one end and the positive phase of infrared detector thermocouple output voltage of resistance R1 and resistance R2, resistance R2
Even, the other end of resistance R2 is connected with the noninverting input of one end of capacitor C2, one end of capacitor C3, instrument amplifier A1 respectively,
One end of resistance R1 is connected with the cathode of infrared detector thermocouple output voltage, and the other end of resistance R1 is respectively with capacitor C2's
The other end, one end of capacitor C1, another noninverting input of instrument amplifier A1 are connected, the power supply anode of instrument amplifier A1
Connect respectively with one end of+5V voltage, one end of capacitor C4, capacitor C5, the power supply negative terminal of instrument amplifier A1 respectively with -5V
One end connection of voltage, one end of capacitor C6, capacitor C7, the output end of instrument amplifier A1 are connected with one end of resistance R4, resistance
The other end of R4 is connected with one end of one end of resistance R5, capacitor C8 respectively, and the other end of capacitor C8 is anti-with amplifier A2 respectively
It is connected to the output end of input terminal, amplifier A2, the input in the same direction with one end of capacitor C9, amplifier A2 respectively of the other end of resistance R5
End connection, the power supply anode of amplifier A2 are connect with one end of+5V voltage, one end of capacitor C12, capacitor C13 respectively, amplifier
The power supply negative terminal of A2 is connect with one end of -5V voltage, one end of capacitor C10, capacitor C11 respectively, infrared detector temperature-sensitive
One end of resistance is connect with the noninverting input of one end of resistance R6, amplifier A3 respectively, and the other end of resistance R6 is electric with+5V respectively
The power supply anode connection in source, one end of capacitor C16, one end of capacitor C17, amplifier A3, the power supply negative terminal of amplifier A3
It is connect respectively with one end of -5V power supply, one end of capacitor C14, capacitor C15, the output end of amplifier A3 is connected with reverse input end；
Capacitor C1, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C9, capacitor C10, capacitor C11, capacitor C12, capacitor
C13, capacitor C14, capacitor C15, capacitor C16 capacitor C17 and infrared detector thermistor the other end be grounded respectively.
6. a kind of bispin guided cartridge according to claim 5 seeks ground detection system, which is characterized in that the capacitor C2's
Capacitor is much larger than the capacitor of capacitor C1 and capacitor C3, and the resistance R1, resistance R2, the value of capacitor C1 and capacitor C3 are all the same.
7. a kind of bispin guided cartridge according to claim 5 seeks ground detection system, which is characterized in that the instrument amplifier
The pin both ends bridging of A1 has resistance R3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360899A (en) * | 2018-04-11 | 2019-10-22 | 西安理工大学 | A kind of bispin guided cartridge seeks ground detection system and its detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360899A (en) * | 2018-04-11 | 2019-10-22 | 西安理工大学 | A kind of bispin guided cartridge seeks ground detection system and its detection method |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201111 Address after: No.2358, east side of Chang'an Road, Wujiang Economic and Technological Development Zone, Suzhou, Jiangsu Province, 215200 Patentee after: Suzhou Xili Technology Services Ltd. Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5 Patentee before: XI'AN University OF TECHNOLOGY |