CN104443397A - Detecting and icebreaking device based on signal conditioning circuit - Google Patents
Detecting and icebreaking device based on signal conditioning circuit Download PDFInfo
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- CN104443397A CN104443397A CN201410574457.3A CN201410574457A CN104443397A CN 104443397 A CN104443397 A CN 104443397A CN 201410574457 A CN201410574457 A CN 201410574457A CN 104443397 A CN104443397 A CN 104443397A
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Abstract
The invention discloses a detecting and icebreaking device based on a signal conditioning circuit. The detecting and icebreaking device based on the signal conditioning circuit comprises an FPGA, a relay control circuit, an alarm circuit, a power supply circuit, the signal conditioning circuit, an AD sampling circuit, a displayer, a display control circuit, a keyboard interface circuit, a state lamp indicating circuit and a heating device, wherein the FPGA is connected with the relay control circuit, the alarm circuit, the power supply circuit, the AD sampling circuit, the displayer, the display control circuit, the keyboard interface circuit, the state lamp indicating circuit and the heating device, and the AD sampling circuit is also connected with the signal conditioning circuit. According to the detecting and icebreaking device based on the signal conditioning circuit, the temperature conditions of all parts are detected in a circulating mode according to requirements so that the icing low temperature possibly appearing on an aircraft body can be detected as early as possible and an alarm signal can be sent to a system to enable an aircraft to fly away from an icing area or the deicing design to be started, and then safe flight is guaranteed.
Description
Technical field
The invention discloses a kind of detection icebreaking device based on signal conditioning circuit, belong to signal processing technology field.
Background technology
The unmanned vehicle of various uses is all being greatly developed in 21 century previous decade countries in the world, and at present, 32 countries have developed more than 50 kind of unmanned plane in the world, have 55 countries to be equipped with unmanned plane.Unmanned plane becomes the maximum bright spot in Weapon Development in this century.It is reported, between 1993-2005, country of NATO unmanned fight weapons sum adds 1.7 times, and before 2006, this quantity will reach 110,000 framves.The research and production of scounting aeroplane and multi-purpose unmanned aerial vehicle is all paid much attention in the U.S., other countries of NATO, Israel, South Africa.
Unmanned plane can assemble the equipment such as guidance system, onboard radar system, sensor, pick up camera, of many uses.Before 2006, various unmanned plane will be equipped in a large number by army in european union of NATO, and only Central European theater unmanned aerial vehicle's quantity just can reach 60,000 framves, and wherein about 60% will be SUAV (small unmanned aerial vehicle).
The U.S. and NATO just develop multi-purpose unmanned aerial vehicle in prospect plan framework, according to the difference of airborne equipment assembling situation, perform the tasks such as aerial reconnaissance, RADIOELECTRONIC COMBAT, strike enemy army depth configuration important goal respectively.In the development of novel unmanned plane, the development of the small multi-purpose unmanned aerial vehicle that special attention cost is relatively inexpensive, as " A Kuila ", gondola " Mirach star " etc. of the U.S., these unmanned functions are while execution reconnaissance mission, complete strike mission, automatically attack the target be found.After the prospect unmanned plane that joint force of NATO is equipped for suppressing enemy air defences system, the manned aircraft of 20% can be liberated, the task of can carry out in Central European region of war air campaign implementation process compacting and terrain object of sweeping with fire.
Current unmanned vehicle mainly flies in atmosphere convection layer and advection layer low layer interval.This interval ambient-air temperature change is complicated, and the temperature of air environment is too low or too highly all will directly affect the normal work of unmanned aerial vehicle control system.Because unmanned vehicle fuselage needs the position of detected temperatures more, monitoring objective compares dispersion, use the temperature sensor of single structure or icing detection instrument to be difficult in real time, grasp whole fuselage table and temperature regime all sidedly, the ice formation issues that during unmanned vehicle high-altitude flight, the key position such as the leading edge of a wing occurs, affects it and uses.
The patent No. is CN1547041A, patent name is the method for a kind of pair of gain multichannel pulse amplitude analysis, this patent is improved for signal accuracy of the prior art and signal disturbing, but the effect that this patent is improved not is very large, and the stability of system is not greatly improved, still there is certain problem.
The patent No. is CN203705369U, patent name is liquid safety check instrument multichannel pulse scope-analyzer, this patent indicates that the prior art of prior art adds the complexity of hardware circuit in order to pursue number of channels, thus cause pursuit performance simply and cause and unpractical problem, this patent has carried out corresponding improvement to this problem, but the stability of this analyzer is not improved, its hardware configuration determine the processing speed of this patent and efficiency not high enough.
Meanwhile, signal conditioning circuit ubiquity complex structure conventional in prior art, the problem that power consumption is larger, requires further improvement.
Summary of the invention
Technical matters to be solved by this invention is: for the defect of prior art, a kind of detection icebreaking device based on signal conditioning circuit is provided, therefore, the design is in conjunction with existing civilian multi-route measuring temperature technology, this system can in unmanned vehicle flight course, the temperature regime at each position of circulatory monitoring as required, make aircraft fly away from ice field in time icing low temperature that fuselage may occur can be measured early and send alerting signal to system or open deicing design, thus reaching the object ensureing flight safety.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on a detection icebreaking device for signal conditioning circuit, comprise FPGA, control relay circuit, warning circuit, power circuit, signal conditioning circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit, heating arrangement;
Wherein FPGA is connected with control relay circuit, warning circuit, power circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit heating arrangement respectively;
Described AD sample circuit is also connected with signal conditioning circuit;
Power circuit is that modules is powered by FPGA, the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit, AD sample circuit gives FPGA process after analog signal is converted to digital signal, data after process send to telltale to show by FPGA, and contrast with the threshold value that keyboard interface circuit sets, if exceed the threshold value of setting, FPGA starts warning circuit and reports to the police, starting relay control circuit simultaneously, starts heating arrangement;
Described signal conditioning circuit comprises the first to the 8th resistance and comparator, wherein, one end of first resistance is connected with one end of the second resistance and ground connection, one end of the other end the respectively with three resistance of the first resistance, one end of 5th resistance is connected, the other end of the 3rd resistance is connected with one end of the 4th resistance, the other end of the other end respectively with the second resistance of the 4th resistance, one end of 6th resistance is connected, one end of the other end the respectively with eight resistance of the 5th resistance, the positive input terminal of comparator is connected, one end of one end the respectively with seven resistance of the 6th resistance, the negative input end of comparator is connected, the other end of the other end the respectively with seven resistance of the 8th resistance, the mouth of comparator is connected.
As further prioritization scheme of the present invention, also comprise amplifier, described signal conditioning circuit is connected with AD sample circuit by amplifier, and the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit after amplifier amplifies.
As further prioritization scheme of the present invention, described signal conditioning circuit adopts platinum sensor.
As further prioritization scheme of the present invention, the chip model of described FPGA is EP3C40.
As further prioritization scheme of the present invention, the switching process of AD sample circuit and data acquisition are controlled by CS and serial clock SCLK, and incoming signal is sampled at the falling edge of CS.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention utilizes FPGA and realizes the temperature patrol inspection to key positions such as the unmanned plane each several parts especially leading edge of a wing in conjunction with platinum sensor, adopting type of heating initiatively ice-melt when there is icing phenomenon; Measured result shows that the unmanned vehicle temperature patrol inspection device detection speed designed by this programme is fast, and precision is high, and temperature control is accurate, efficiently solves ice formation issues during unmanned vehicle high-altitude flight.
Accompanying drawing explanation
Fig. 1 is circuit module connection diagram of the present invention.
Fig. 2 is in the present invention, the circuit diagram of signal conditioning circuit,
Wherein: R1 to R8 is respectively the first to the 8th resistance, and L is comparator.
Detailed description of the invention
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are understandable that, the correlation module related in the present invention and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present invention is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the present invention is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and customized design and manufacture, or also can adopt the known device in general computer or other known hardware devices.Described general computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification sheets of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Circuit module connection diagram of the present invention as shown in Figure 1, comprises FPGA, control relay circuit, warning circuit, power circuit, signal conditioning circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit, heating arrangement;
Wherein FPGA is connected with control relay circuit, warning circuit, power circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit heating arrangement respectively;
Described AD sample circuit is also connected with signal conditioning circuit;
Power circuit is that modules is powered by FPGA, the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit, AD sample circuit gives FPGA process after analog signal is converted to digital signal, data after process send to telltale to show by FPGA, and contrast with the threshold value that keyboard interface circuit sets, if exceed the threshold value of setting, FPGA starts warning circuit and reports to the police, starting relay control circuit simultaneously, starts heating arrangement.
In the present invention, the circuit diagram of signal conditioning circuit as shown in Figure 2, described signal conditioning circuit comprises the first to the 8th resistance and comparator, wherein, one end of first resistance is connected with one end of the second resistance and ground connection, one end of the other end the respectively with three resistance of the first resistance, one end of 5th resistance is connected, the other end of the 3rd resistance is connected with one end of the 4th resistance, the other end of the other end respectively with the second resistance of the 4th resistance, one end of 6th resistance is connected, one end of the other end the respectively with eight resistance of the 5th resistance, the positive input terminal of comparator is connected, one end of one end the respectively with seven resistance of the 6th resistance, the negative input end of comparator is connected, the other end of the other end the respectively with seven resistance of the 8th resistance, the mouth of comparator is connected.
As further prioritization scheme of the present invention, also comprise amplifier, described signal conditioning circuit is connected with AD sample circuit by amplifier, and the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit after amplifier amplifies.
As further prioritization scheme of the present invention, described signal conditioning circuit adopts platinum sensor.Platinum sensor adopts platinum sensor PT100, and the signal that the probe of this sensor produces is very faint, is easy to be subject to noise jamming, so the instrument amplifier that amplifying circuit selects single amplifier to form.Instrument amplifier has differential type structure, has very strong inhibit function to common-mode noise, has higher input impedance and less output impedance simultaneously, is applicable to very much the amplification to small signal.
As further prioritization scheme of the present invention, the chip model of described FPGA is EP3C40.
As further prioritization scheme of the present invention, system selects AD7476 as sampling A/D chip.This chip is 12 low-power consumption SAR ADC, and adopt single supply work, power line voltage is 2.35V to 5.25V, and the highest throughput rate can reach 1MSPS, meets the sampling precision of native system and the requirement of speed completely.This built-in chip type low noise, wide bandwidth sample/hold amplifier, can process the incoming frequency of more than 6MHz.
AD conversion process and data acquisition are controlled by CS and serial clock SCLK, thus create condition for device and FPGA interface.Incoming signal is sampled at the falling edge of CS, and conversion starts simultaneously herein, and switching rate depends on the clock frequency of SCLK.
Unmanned vehicle temperature patrol inspection device designed by the present invention utilize FPGA rapidity, can the feature such as concurrency, time delay stationarity, can be quick, detect each part temperatures of unmanned plane accurately.Verify by experiment, the maximum error of system is no more than 0.01 degree, meets the requirement of unmanned vehicle to temperature acquisition completely.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection domain all still belonging to technical solution of the present invention.
Claims (5)
1. based on a detection icebreaking device for signal conditioning circuit, it is characterized in that: comprise FPGA, control relay circuit, warning circuit, power circuit, signal conditioning circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit, heating arrangement;
Wherein FPGA is connected with control relay circuit, warning circuit, power circuit, AD sample circuit, telltale, display control circuit, keyboard interface circuit, status lamp indicating circuit heating arrangement respectively;
Described AD sample circuit is also connected with signal conditioning circuit;
Power circuit is that modules is powered by FPGA, the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit, AD sample circuit gives FPGA process after analog signal is converted to digital signal, data after process send to telltale to show by FPGA, and contrast with the threshold value that keyboard interface circuit sets, if exceed the threshold value of setting, FPGA starts warning circuit and reports to the police, starting relay control circuit simultaneously, starts heating arrangement;
Described signal conditioning circuit comprises the first to the 8th resistance and comparator, wherein, one end of first resistance is connected with one end of the second resistance and ground connection, one end of the other end the respectively with three resistance of the first resistance, one end of 5th resistance is connected, the other end of the 3rd resistance is connected with one end of the 4th resistance, the other end of the other end respectively with the second resistance of the 4th resistance, one end of 6th resistance is connected, one end of the other end the respectively with eight resistance of the 5th resistance, the positive input terminal of comparator is connected, one end of one end the respectively with seven resistance of the 6th resistance, the negative input end of comparator is connected, the other end of the other end the respectively with seven resistance of the 8th resistance, the mouth of comparator is connected.
2. a kind of detection icebreaking device based on signal conditioning circuit as claimed in claim 1, it is characterized in that: also comprise amplifier, described signal conditioning circuit is connected with AD sample circuit by amplifier, and the voltage signal of collection is sent to AD sample circuit by signal conditioning circuit after amplifier amplifies.
3. a kind of detection icebreaking device based on signal conditioning circuit as claimed in claim 1, is characterized in that: described signal conditioning circuit adopts platinum sensor.
4. a kind of detection icebreaking device based on signal conditioning circuit as claimed in claim 3, is characterized in that: the chip model of described FPGA is EP3C40.
5. a kind of detection icebreaking device based on signal conditioning circuit as claimed in claim 1, is characterized in that: the switching process of AD sample circuit and data acquisition are controlled by CS and serial clock SCLK, and incoming signal is sampled at the falling edge of CS.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410574457.3A CN104443397A (en) | 2014-10-24 | 2014-10-24 | Detecting and icebreaking device based on signal conditioning circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410574457.3A CN104443397A (en) | 2014-10-24 | 2014-10-24 | Detecting and icebreaking device based on signal conditioning circuit |
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| CN104443397A true CN104443397A (en) | 2015-03-25 |
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| CN201410574457.3A Withdrawn CN104443397A (en) | 2014-10-24 | 2014-10-24 | Detecting and icebreaking device based on signal conditioning circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112678188A (en) * | 2020-12-25 | 2021-04-20 | 武汉航空仪表有限责任公司 | Icing detector based on impedance measurement principle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723971B1 (en) * | 1998-12-01 | 2004-04-20 | The Trustees Of Dartmouth College | Methods and structures for removing ice from surfaces |
| CN101590914A (en) * | 2009-07-02 | 2009-12-02 | 北京航空航天大学 | A kind of anti-icing and deicing device for flight vehicle |
| CN101695959A (en) * | 2009-10-22 | 2010-04-21 | 北京航空航天大学 | Ice preventing and removing device for helicopter rotors |
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2014
- 2014-10-24 CN CN201410574457.3A patent/CN104443397A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723971B1 (en) * | 1998-12-01 | 2004-04-20 | The Trustees Of Dartmouth College | Methods and structures for removing ice from surfaces |
| CN101590914A (en) * | 2009-07-02 | 2009-12-02 | 北京航空航天大学 | A kind of anti-icing and deicing device for flight vehicle |
| CN101695959A (en) * | 2009-10-22 | 2010-04-21 | 北京航空航天大学 | Ice preventing and removing device for helicopter rotors |
Non-Patent Citations (1)
| Title |
|---|
| 魏欣等: "基于FPGA的无人飞行器温度巡检装置的设计", 《电子世界》, 15 October 2013 (2013-10-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112678188A (en) * | 2020-12-25 | 2021-04-20 | 武汉航空仪表有限责任公司 | Icing detector based on impedance measurement principle |
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Application publication date: 20150325 |