CN203180863U - An anti-aliasing low-pass filter of an airplane-mounted data collector - Google Patents
An anti-aliasing low-pass filter of an airplane-mounted data collector Download PDFInfo
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- CN203180863U CN203180863U CN 201320142311 CN201320142311U CN203180863U CN 203180863 U CN203180863 U CN 203180863U CN 201320142311 CN201320142311 CN 201320142311 CN 201320142311 U CN201320142311 U CN 201320142311U CN 203180863 U CN203180863 U CN 203180863U
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- pass filter
- electric capacity
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Abstract
The utility model discloses an anti-aliasing low-pass filter of an airplane-mounted data collector. The airplane-mounted data collector comprises a simulating adapter connected between an airplane-mounted sensor and a microprocessor. The simulating adapter is composed of a photoelectric coupler, a differential amplifier, a resonator, a high-pass filter, a low-pass filter, and an A/D converter which are connected successively. The anti-aliasing low-pass filter comprises a DC power supply, two amplifiers, seven resistors, and five capacitors. A stage of amplifying circuit is formed by an amplifier, three resistors, and two capacitors. The low-pass filter is formed by two stages of amplifying circuits connected in series. The output signals of the two amplifiers are fed back to the positive signal input ends of the two amplifiers. Therefore, amplification of an input signal is achieved while the function of the low-pass filter is achieved. A purpose of compensating the signal loss of the low-pass filter is achieved and a function of preventing signals from aliasing is achieved.
Description
Technical field
The utility model relates to a kind of filter, relates in particular to a kind of anti-aliasing low pass filter of on-board data collector.
Background technology
The data acquisition unit of aircraft flight is the on-board data collector, is mainly used in gathering the various data in the aircraft flight process, mainly comprises various airborne sensors, simulation adapter, microprocessor, communication module, human-computer interaction module and memory module.Because the on-board data collector is realized data acquisition in the high-speed cruising process, and require the signal demand of collection true as far as possible, so require each circuit part in the collector all highly stablely to work reliably.In the existing on-board data collector, though the low pass filter in its simulation adapter can be realized filter function, but signal is not had enlarging function and has loss, if adopt the direct amplifying signal compensation of general amplifier, the problem of signal aliasing then may occur.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of can amplifying signal and can prevent the anti-aliasing low pass filter of the on-board data collector of signal aliasing.
The utility model is achieved through the following technical solutions above-mentioned purpose:
On-board data collector described in the utility model comprises the simulation adapter that is connected between airborne sensor and the microprocessor, and described simulation adapter is made of the photoelectrical coupler, differential amplifier, resonator, high pass filter, low pass filter and the A/D converter that connect successively; Described frequency overlapped-resistable filter comprises DC power supply, first amplifier, second amplifier, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, first end of described first resistance, first end of described first electric capacity and the positive signal input of described first amplifier interconnects and as the signal input part of described low pass filter, second end of described first resistance output with described first amplifier of connecting behind described second electric capacity respectively, first end of described the 3rd resistance is connected with first end of described the 4th resistance, the negative signal input of described first amplifier is connected with first end of described second resistance and second end of described the 3rd resistance respectively, second end of described the 4th resistance respectively with first end of described the 3rd electric capacity, first end of described the 5th resistance is connected with first end of described the 5th electric capacity, second end of described the 5th resistance is connected with first end of described the 4th electric capacity and the positive signal input of described second amplifier respectively, the negative signal input of described second amplifier is connected with first end of described the 6th resistance and first end of described the 7th resistance respectively, second end of described the 7th resistance, second end of described the 5th electric capacity and the output of described second amplifier interconnects and as the signal output part of described low pass filter, the cathode power supply input of described first amplifier all is connected with the positive pole of described DC power supply with the cathode power supply input of described second amplifier, second end of described first electric capacity, second end of described second resistance, second end of described the 3rd electric capacity, second end of described the 4th electric capacity, second end of described the 6th resistance, the negative power supply input of described first amplifier all is connected with the negative pole of described DC power supply with the negative power supply input of described second amplifier.
The beneficial effects of the utility model are:
Low pass filter of the present utility model is made up of the two-stage amplifying circuit, the output end signal of two amplifiers feeds back to the positive signal input of two amplifiers respectively, when realizing the low-pass filtering function, realize the amplification to input signal, reach the purpose of the loss of signal of compensation low pass filter, and can realize preventing the function of signal aliasing.
Description of drawings
Fig. 1 is the circuit block diagram of on-board data collector described in the utility model;
Fig. 2 is the circuit diagram of anti-aliasing low pass filter described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, on-board data collector described in the utility model comprises airborne sensor, simulation adapter, microprocessor, touch-screen, memory, local communication module and telecommunication module, and the simulation adapter is made of the photoelectrical coupler, amplifier, resonator, high pass filter, low pass filter and the A/D converter that connect successively.
As shown in Figure 2, described frequency overlapped-resistable filter comprises the 24V DC power supply, the first amplifier IC1, the second amplifier IC2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4 and the 5th capacitor C 5, first end of first resistance R 1, the positive signal input of first end of first capacitor C 1 and the first amplifier IC1 interconnects and as the signal input part Vi of described low pass filter, second end of first resistance R 1 output with the first amplifier IC1 of connecting after second capacitor C 2 respectively, first end of the 3rd resistance R 3 is connected with first end of the 4th resistance R 4, the negative signal input of the first amplifier IC1 is connected with first end of second resistance R 2 and second end of the 3rd resistance R 3 respectively, second end of the 4th resistance R 4 respectively with first end of the 3rd capacitor C 3, first end of the 5th resistance R 5 is connected with first end of the 5th capacitor C 5, second end of the 5th resistance R 5 is connected with first end of the 4th capacitor C 4 and the positive signal input of the second amplifier IC2 respectively, the negative signal input of the second amplifier IC2 is connected with first end of the 6th resistance R 6 and first end of the 7th resistance R 7 respectively, second end of the 7th resistance R 7, second end of the 5th the capacitor C 5 and output of the second amplifier IC2 interconnects and as the signal output part Vo of described low pass filter, the cathode power supply input of the cathode power supply input of the first amplifier IC1 and the second amplifier IC2 all is connected with the positive pole of 24V DC power supply, second end of first capacitor C 1, second end of second resistance R 2, second end of the 3rd capacitor C 3, second end of the 4th capacitor C 4, second end of the 6th resistance R 6, the negative power supply input of the negative power supply input of the first amplifier IC1 and the second amplifier IC2 all is connected with the negative pole of 24V DC power supply.
As shown in Figure 2, the first amplifier IC1, first resistance R 1, second resistance R 2, the 3rd resistance R 3, first capacitor C 1 and second capacitor C, the 2 common first order amplifying circuits of forming, the second amplifier IC2, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 4th capacitor C 4 and the 5th capacitor C 5 common second level amplifying circuits of forming, the two-stage amplifying circuit is connected mutually, and the output end signal of the first amplifier IC1 is fed back to the positive signal input of the first amplifier IC1, the output end signal of the second amplifier IC2 is fed back to the positive signal input of the first amplifier IC1 and the positive signal input of the second amplifier IC2, when realizing the low-pass filtering function, realize the amplification to input signal, reach the purpose of the loss of signal of compensation low pass filter, and can realize preventing the function of signal aliasing.
Claims (1)
1. the anti-aliasing low pass filter of an on-board data collector, described on-board data collector comprises the simulation adapter that is connected between airborne sensor and the microprocessor, and described simulation adapter is made of the photoelectrical coupler, differential amplifier, resonator, high pass filter, low pass filter and the A/D converter that connect successively; It is characterized in that: described frequency overlapped-resistable filter comprises DC power supply, first amplifier, second amplifier, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, first end of described first resistance, first end of described first electric capacity and the positive signal input of described first amplifier interconnects and as the signal input part of described low pass filter, second end of described first resistance output with described first amplifier of connecting behind described second electric capacity respectively, first end of described the 3rd resistance is connected with first end of described the 4th resistance, the negative signal input of described first amplifier is connected with first end of described second resistance and second end of described the 3rd resistance respectively, second end of described the 4th resistance respectively with first end of described the 3rd electric capacity, first end of described the 5th resistance is connected with first end of described the 5th electric capacity, second end of described the 5th resistance is connected with first end of described the 4th electric capacity and the positive signal input of described second amplifier respectively, the negative signal input of described second amplifier is connected with first end of described the 6th resistance and first end of described the 7th resistance respectively, second end of described the 7th resistance, second end of described the 5th electric capacity and the output of described second amplifier interconnects and as the signal output part of described low pass filter, the cathode power supply input of described first amplifier all is connected with the positive pole of described DC power supply with the cathode power supply input of described second amplifier, second end of described first electric capacity, second end of described second resistance, second end of described the 3rd electric capacity, second end of described the 4th electric capacity, second end of described the 6th resistance, the negative power supply input of described first amplifier all is connected with the negative pole of described DC power supply with the negative power supply input of described second amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142311 CN203180863U (en) | 2013-03-26 | 2013-03-26 | An anti-aliasing low-pass filter of an airplane-mounted data collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142311 CN203180863U (en) | 2013-03-26 | 2013-03-26 | An anti-aliasing low-pass filter of an airplane-mounted data collector |
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| Publication Number | Publication Date |
|---|---|
| CN203180863U true CN203180863U (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320142311 Expired - Fee Related CN203180863U (en) | 2013-03-26 | 2013-03-26 | An anti-aliasing low-pass filter of an airplane-mounted data collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020263A (en) * | 2016-05-23 | 2016-10-12 | 四川蓉幸实业有限公司 | Double filtering signal processing circuit for fructus aurantii drying temperature controller |
-
2013
- 2013-03-26 CN CN 201320142311 patent/CN203180863U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020263A (en) * | 2016-05-23 | 2016-10-12 | 四川蓉幸实业有限公司 | Double filtering signal processing circuit for fructus aurantii drying temperature controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN FRONTER ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CHENGDU LONGTENG ZHONGYUAN INFORMATION TECHNOLOGY CO., LTD. Effective date: 20141226 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610000 CHENGDU, SICHUAN PROVINCE TO: 518026 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141226 Address after: 518026 A, block 6021, happy center, No. 1112-1117 Shennan Road, Guangdong, Shenzhen, Futian District, China Patentee after: SHENZHEN FULANG ELECTRONICS CO., LTD. Address before: 610000 Sichuan city of Chengdu province high tech Zone No. 51 North Street Shichiku of No. 1 Patentee before: Chengdu Longteng Zhongyuan Information Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20200326 |