CN104360290A - Radar antenna power failure detection circuit - Google Patents
Radar antenna power failure detection circuit Download PDFInfo
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- CN104360290A CN104360290A CN201410665482.2A CN201410665482A CN104360290A CN 104360290 A CN104360290 A CN 104360290A CN 201410665482 A CN201410665482 A CN 201410665482A CN 104360290 A CN104360290 A CN 104360290A
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Abstract
The invention discloses a radar antenna power failure detection circuit. The radar antenna power failure detection circuit is characterized by comprising a signal detection circuit, a signal conditioning circuit, a multiplexer, an analog-digital conversion circuit, a microprocessor and a communication interface circuit which are connected in sequence, wherein the multiplexer, the analog-digital conversion circuit, the microprocessor and the communication interface circuit are connected with a programmable logic device. The radar antenna power failure detection circuit is reasonable in design, simple in structure, low in cost, stable, reliable, capable of accurately monitoring an antenna power system in real time, high in failure detection rate and failure isolation rate, low in false alarm rate and capable of effectively detecting a radar antenna power supply.
Description
Technical field
The present invention relates to radar auxiliary device technical field, especially relate to a kind of radar antenna power failure detection circuit.
Background technology
Along with phased array antenna widely using in radar, the fault detect of antenna power becomes more and more important, the power supply scale of phased array antenna often with transmitting-receiving (T/R) assembly number be directly proportional, when T/R assembly reaches up to a hundred, power-supply system is relatively huge, power failure monitor is also more complicated, power fail will directly cause T/R component operation abnormal, therefore the power failure detection circuit that design one is perfect is extremely important, it can be monitored power supply in real time, Timeliness coverage fault, by localization of fault to LRU, guide maintenance personnel carry out alternate maintenance.But current radar antenna power detecting equipment de-sign is complicated, cost is higher, use operation inconvenience, is unfavorable for efficiently carrying out the maintenance work of radar system.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of radar antenna power failure detection circuit is provided, radar antenna power sense circuit of the present invention is reasonable in design, structure simple, cost is lower, reliable and stable, accurately real-time antenna power system can be monitored, fault detect rate is high, Percent Isolated is high, and false alarm rate is low, can effectively realize detecting to radar antenna power supply.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of radar antenna power failure detection circuit, it is characterized in that: comprise the signal deteching circuit, signal conditioning circuit, multiplexer, analog to digital conversion circuit, microprocessor and the communication interface circuit that are connected successively, described multiplexer, analog to digital conversion circuit, microprocessor are all connected with programmable logic device (PLD) with communication interface circuit.
Above-mentioned a kind of radar antenna power failure detection circuit, is characterized in that: described signal deteching circuit input end connects and detects 35 road power supplys.
Above-mentioned a kind of radar antenna power failure detection circuit, it is characterized in that: the resistance R1 that described signal conditioning circuit comprises operational amplifier OP07 and is connected with its in-phase end, described resistance R1 also distinguishes contact resistance R2, electric capacity C1 one end, described resistance R2, electric capacity C1 other end ground connection, described resistance R1 inputs 12V direct current.
Above-mentioned a kind of radar antenna power failure detection circuit, is characterized in that: it is the chip of MAX398 that described multiplexer comprises three models be connected to each other.
Above-mentioned a kind of radar antenna power failure detection circuit, is characterized in that: analog-digital conversion circuit as described selects the AD670 of ADI company.
Above-mentioned a kind of radar antenna power failure detection circuit, is characterized in that: the AT89C55 of atmel corp selected by described microprocessor.
Above-mentioned a kind of radar antenna power failure detection circuit, is characterized in that: the ispLSI1016E of what described programmable logic device (PLD) was selected is LATTICE company.
The present invention compared with prior art has the following advantages:
Radar antenna power sense circuit of the present invention is reasonable in design, structure simple, cost is lower, reliable and stable, can monitor antenna power system accurately in real time, fault detect rate is high, and Percent Isolated is high, false alarm rate is low, can effectively realize detecting to radar antenna power supply.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is integrated circuit theory diagram of the present invention;
Fig. 2 is signal conditioning circuit circuit theory diagrams of the present invention;
Fig. 3 is multiplexer circuit schematic diagram of the present invention;
Fig. 4 is analog to digital conversion circuit circuit theory diagrams of the present invention;
Fig. 5 is microcontroller circuit schematic diagram of the present invention.
Embodiment
As shown in Figure 1, a kind of radar antenna power failure detection circuit, it is characterized in that: comprise the signal deteching circuit 1, signal conditioning circuit 2, multiplexer 3, analog to digital conversion circuit 4, microprocessor 5 and the communication interface circuit 6 that are connected successively, described multiplexer 3, analog to digital conversion circuit 4, microprocessor 5 are all connected with programmable logic device (PLD) 7 with communication interface circuit 6.
In the present embodiment, described signal deteching circuit 1 input end connects and detects 35 road power supplys.
In the present embodiment, the resistance R1 that described signal conditioning circuit 2 comprises operational amplifier OP07 and is connected with its in-phase end, described resistance R1 also distinguishes contact resistance R2, electric capacity C1 one end, described resistance R2, electric capacity C1 other end ground connection, and described resistance R1 inputs 12V direct current.
Fig. 2 is the modulate circuit that 12V detects voltage.Signal conditioning circuit mainly carries out the process such as filtering, dividing potential drop and impedance matching to the power detection signal of input.The object of filtering is the frequency glitches in filtering detection signal, can see often there is the interference burr that amplitude is very large in antenna power signal, if not filtering may cause damage to device, or affect accuracy of detection by test.The object of dividing potential drop converts the amplitude of detection signal, makes it meet the input requirements of rear class A/D transducer, and the key of design had both ensured that the amplitude of signal did not exceed the input requirements of A/D, improves the resolution of signal again as far as possible.Impedance matching circuit is an emitter follower, and object is the impedance matching before and after carrying out, and improves the precision detected.
Wherein, electric capacity C1 carries out filtering to frequency glitches, generally get 0.01 μ F, precision resistance R1 and R2 forms bleeder circuit, in order to reduce the impact on power supply, resistance should get a kilo-ohm level, concrete value should with reference to the full range (0 ~ 2.55V) of the normal judgement scope (10.3 ~ 14V) of 12V and A/D, after calculating and weighing, R1 gets 46.4K Ω, R2 gets 10K Ω, can calculate the under-voltage of 12V voltage and Overpressure door limit value is respectively: under-voltage threshold value: 1.83V, Overpressure door limit value: 2.48V.Namely input the normal range of 12V voltage after dividing potential drop and within the scope of 1.83 ~ 2.48V, otherwise fault should be judged to.
In the present embodiment, it is the chip of MAX398 that described multiplexer 3 comprises three models be connected to each other.The circuit of multiplexer 3 as shown in Figure 3, select by the tested voltage in major function Shi Dui 35 road, ensures that the analog to digital conversion circuit at a time only having a road voltage to enter rear class carries out data conversion.MUX circuit is made up of two-stage altogether, prime selects the multiplexer of to form by five piece eight, the 35 tested voltages in road are connected to these MUX after conditioning, the wiring diagram of two pieces is only depicted in figure, its excess-three block is substantially identical, rear class is made up of one piece of multiplexer, further selects the five road voltages that prime exports.In figure, signal MUX1, MUX2 select prime chip, and signal DD0, DD1, DD2 passage to prime is selected, and signal DD5, DD6, DD7 select rear class passage, and these signals are all produced by CPLD.
In the present embodiment, analog-digital conversion circuit as described 4 selects the AD670 of ADI company.Fig. 4 is A/D change-over circuit, and major function carries out data conversion to the tested voltage of input, and the result of conversion send single-chip microcomputer.A/D converter part selects the AD670 of ADI company, eight bit resolutions, 10 μ s slewing rates, program-controlled unipolarity or bipolarity input, unipolarity full scale input range is 0 ~ 2.55V, bipolarity is-1.28 ~+1.27V, in figure, signal ADRDY is that A/D converts signal, connects the I/O pin of single-chip microcomputer, when ADRDY is low, represent that data convert, whether converted by the condition adjudgement A/D of this signal of inquiry in a program.Signal ADCE, ADCS, ADRW be respectively A/D chip enable, sheet choosing and read-write control signal, ADCE and ADCS is effectively low, meet address wire P20 and the P21 of single-chip microcomputer respectively, ADRW carries out write operation to A/D when being low, namely write control command, as unipolarity or bipolar operation etc., when ADRW is high, read operation is carried out to A/D, read transformation result, this signal produces in CPLD.
In the present embodiment, the AT89C55 of atmel corp selected by described microprocessor 5.Fig. 5 is single-chip microcomputer and peripheral circuit, the AT89C55 of atmel corp selected by single-chip microcomputer, the inner program storage with 20K byte, it is the control core of whole failure detector circuit, it controls testing circuit by working procedure and carries out voltage detecting, the result of detection is carried out rough handling, generation unit level bug list, serve level and carry out overall treatment.Integrated circuit D2 (MAX813) is house dog, and major function is the running status monitoring Single Chip Microcomputer (SCM) program, if program fleet was more than 1.6 seconds, house dog just produces a reset signal, resets, make program reenter normal step to single-chip microcomputer.Integrated circuit D3 (MAX485) is RS-485 serial communication interface, and it realizes the mutual conversion of Transistor-Transistor Logic level and RS-485 level, is the communication interface of testing circuit and superordinate elements.Diode V2 is malfunction indicator lamp, when a power failure is detected, lights pilot lamp.
In the present embodiment, the ispLSI 1016E of what described programmable logic device (PLD) 7 was selected is LATTICE company.Its logical design adopts Graphics Input method, and major function selects the passage of MUX, control etc. A/D converter.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (7)
1. a radar antenna power failure detection circuit, it is characterized in that: comprise the signal deteching circuit (1), signal conditioning circuit (2), multiplexer (3), analog to digital conversion circuit (4), microprocessor (5) and the communication interface circuit (6) that are connected successively, described multiplexer (3), analog to digital conversion circuit (4), microprocessor (5) are all connected with programmable logic device (PLD) (7) with communication interface circuit (6).
2. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: described signal deteching circuit (1) input end connects and detects 35 road power supplys.
3. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: the resistance R1 that described signal conditioning circuit (2) comprises operational amplifier OP07 and is connected with its in-phase end, described resistance R1 also distinguishes contact resistance R2, electric capacity C1 one end, described resistance R2, electric capacity C1 other end ground connection, described resistance R1 inputs 12V direct current.
4. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: it is the chip of MAX398 that described multiplexer (3) comprises three models be connected to each other.
5. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: analog-digital conversion circuit as described (4) selects the AD670 of ADI company.
6. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: the AT89C55 of atmel corp selected by described microprocessor (5).
7. according to a kind of radar antenna power failure detection circuit according to claim 1, it is characterized in that: the ispLSI1016E of what described programmable logic device (PLD) (7) was selected is LATTICE company.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410665482.2A CN104360290A (en) | 2014-11-19 | 2014-11-19 | Radar antenna power failure detection circuit |
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| CN201410665482.2A CN104360290A (en) | 2014-11-19 | 2014-11-19 | Radar antenna power failure detection circuit |
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| CN104360290A true CN104360290A (en) | 2015-02-18 |
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| CN201410665482.2A Pending CN104360290A (en) | 2014-11-19 | 2014-11-19 | Radar antenna power failure detection circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833963A (en) * | 2015-06-04 | 2015-08-12 | 祁欣 | Weather radar antenna and servo system fault detection tool |
| CN105974380A (en) * | 2016-06-01 | 2016-09-28 | 上海铁路通信有限公司 | On-board speed measuring radar antenna module detection circuit |
| CN113287271A (en) * | 2019-01-17 | 2021-08-20 | 纬湃科技有限责任公司 | Device and method for functionally testing an antenna system for the detection of metallic impurities |
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| US5786641A (en) * | 1995-02-07 | 1998-07-28 | Mitsubishi Denki Kabushiki Kaisha | Failure detection system for detecting a failure in a power converter |
| CN102455412A (en) * | 2010-10-20 | 2012-05-16 | 徐鑫 | Radar antenna power failure detection circuit |
| CN103163486A (en) * | 2011-12-14 | 2013-06-19 | 西安广融电气有限公司 | Radar antenna power source failure detection circuit |
| CN103823192A (en) * | 2012-11-19 | 2014-05-28 | 拓普盛达信息技术(大连)有限公司 | Power source failure detection device |
| CN204203441U (en) * | 2014-11-19 | 2015-03-11 | 成都锐新科技有限公司 | A kind of radar antenna power failure detection circuit |
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2014
- 2014-11-19 CN CN201410665482.2A patent/CN104360290A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5786641A (en) * | 1995-02-07 | 1998-07-28 | Mitsubishi Denki Kabushiki Kaisha | Failure detection system for detecting a failure in a power converter |
| CN102455412A (en) * | 2010-10-20 | 2012-05-16 | 徐鑫 | Radar antenna power failure detection circuit |
| CN103163486A (en) * | 2011-12-14 | 2013-06-19 | 西安广融电气有限公司 | Radar antenna power source failure detection circuit |
| CN103823192A (en) * | 2012-11-19 | 2014-05-28 | 拓普盛达信息技术(大连)有限公司 | Power source failure detection device |
| CN204203441U (en) * | 2014-11-19 | 2015-03-11 | 成都锐新科技有限公司 | A kind of radar antenna power failure detection circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833963A (en) * | 2015-06-04 | 2015-08-12 | 祁欣 | Weather radar antenna and servo system fault detection tool |
| CN105974380A (en) * | 2016-06-01 | 2016-09-28 | 上海铁路通信有限公司 | On-board speed measuring radar antenna module detection circuit |
| CN105974380B (en) * | 2016-06-01 | 2018-06-19 | 上海铁路通信有限公司 | A kind of vehicle-mounted speed measuring radar Anneta module detection circuit |
| CN113287271A (en) * | 2019-01-17 | 2021-08-20 | 纬湃科技有限责任公司 | Device and method for functionally testing an antenna system for the detection of metallic impurities |
| CN113287271B (en) * | 2019-01-17 | 2023-08-25 | 纬湃科技有限责任公司 | Device and method for functional testing of antenna system for metal impurity recognition |
| US11860208B2 (en) | 2019-01-17 | 2024-01-02 | Vitesco Technologies GmbH | Device and method for testing the function of an antenna system for foreign metal detection |
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