CN207280505U - A kind of analog input modulate circuit for air data computer test - Google Patents
A kind of analog input modulate circuit for air data computer test Download PDFInfo
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- CN207280505U CN207280505U CN201721201036.1U CN201721201036U CN207280505U CN 207280505 U CN207280505 U CN 207280505U CN 201721201036 U CN201721201036 U CN 201721201036U CN 207280505 U CN207280505 U CN 207280505U
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- data computer
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Abstract
The utility model discloses a kind of analog input modulate circuit for air data computer test, including conditioning input port, attenuator circuit, filter circuit, voltage follower circuit and conditioning output port；The conditioning input port receives the analog signal from air data computer, conditioning input port is sequentially connected attenuator circuit, filter circuit and voltage follower circuit, analog signal from air data computer is nursed one's health, voltage follower circuit gives the analog signal transmission after conditioning to conditioning output port, by the output port of nursing one's health by detection platform of the analog signal transmission after conditioning to air data computer.The utility model provides a kind of analog input modulate circuit for air data computer test, the data of air data computer input are nursed one's health, detection platform is transmitted further to, detection platform is convenient to and collects valid data, realizes the test of air data computer.
Description
Technical field
Air data computer test is the utility model is related to, being used for air data computer more particularly to one kind tests
Analog input modulate circuit.
Background technology
Air data computer is a kind of airborne Integrated Measurement System of multiple-input and multiple-output, also known as atmosphere data center
Instrument, such as a small amount of raw information that it is measured according to sensor, static pressure, stagnation pressure, total temperature, the angle of attack calculate more with big destiny
According to related parameter, such as flying height, height tolerance, lifting speed, true airspeed, indicator air speed, Mach number, Mach number change
Rate, total temperature, true static pressure, Static Air Temperature, atmospheric density ratio, true angle of attack etc., give cockpit display, flight control, navigation, hair
The mobile systems such as motivation control, firepower control, have a very big significance in aerospace field.
To ensure the comprehensive performance of air data computer, often need to build detection platform to air data computer progress
Test, when air data computer is toward detection platform input analog amount signal, detection platform need to the analog signal of input into
Row collection, conversion and processing are to obtain testing result, in fact, a detection platform generally requires to support to the big of different model
The detection of gas data computer, and the species of analog signal is more, level etc., some simulations from air data computer
The level for measuring signal may not be in the collection range of detection platform, and the test to air data computer brings many
Inconvenience.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, there is provided one kind is used for air data computer and tests
Analog input modulate circuit, the data of air data computer input are nursed one's health, are transmitted further to detection platform, it is convenient
Valid data are collected in detection platform, realize the test of air data computer.
The purpose of this utility model is achieved through the following technical solutions：One kind is used for air data computer and tests
Analog input modulate circuit, including conditioning input port, attenuator circuit, filter circuit, voltage follower circuit and conditioning it is defeated
Exit port；
The conditioning input port receives the analog signal from air data computer, and conditioning input port is sequentially connected
Attenuator circuit, filter circuit and voltage follower circuit, nurse one's health the analog signal from air data computer, voltage with
The analog signal transmission after conditioning is given to conditioning output port with circuit, is believed the simulation after conditioning by the conditioning output port
Number it is transferred to the detection platform of air data computer；
The attenuator circuit includes first resistor R1 and second resistance R2, and the filter circuit includes 3rd resistor R3 and electricity
Hold C1, the voltage follower circuit includes operational amplifier；One end of first resistor R1 is connected with conditioning input port, the first electricity
The other end of resistance R1 is grounded by second resistance R2, and first resistor R1 connects the 3rd resistor with the common port of second resistance R2
One end of R3, the in-phase input end of the other end concatenation operation amplifier of 3rd resistor R3, one end of the capacitance C1 is connected to
Between 3rd resistor R3 and voltage follower circuit, the other end ground connection of capacitance C1；The output terminal and operation amplifier of operational amplifier
The inverting input connection of device, and the output terminal of operational amplifier is also connected with the conditioning output port.
Preferably, a kind of analog input modulate circuit for air data computer test, further includes steady
Volt circuit, the regulator circuit are arranged between conditioning input terminal and attenuator circuit.The regulator circuit includes two-way TVS
Pipe, one end of the TVS pipe are connected with conditioning input port, the other end ground connection of TVS pipe.
Preferably, the TVS pipe model 1.5SMC30A, the operational amplifier use OPA2277UA chips.
Preferably, the analog input modulate circuit further includes the 4th resistance R4, and the 4th resistance R4 is arranged at fortune
Calculate between the output terminal of amplifier and the conditioning output port.
The beneficial effects of the utility model are：The data that the utility model inputs air data computer are nursed one's health,
It is transmitted further to detection platform, during data conditioning, first passes through the signal that attenuator circuit inputs air data computer and carry out
Decay adjustment, makes signal within the collection range for checking platform, then is filtered the conditioning with voltage follow, then will nurse one's health
To signal transmission handled to detection platform, be convenient to detection platform and collect valid data, realize atmosphere data calculate
The test of machine.
Brief description of the drawings
Fig. 1 is the functional block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model；
Fig. 3 is the pinouts of operational amplifier chip OPA2277UA.
Embodiment
The technical solution of the utility model, but the scope of protection of the utility model are described in further detail below in conjunction with the accompanying drawings
It is not limited to as described below.
As shown in Figure 1, a kind of analog input modulate circuit for air data computer test, including conditioning input
Port, attenuator circuit, filter circuit, voltage follower circuit and conditioning output port；
The conditioning input port receives the analog signal from air data computer, and conditioning input port is sequentially connected
Attenuator circuit, filter circuit and voltage follower circuit, nurse one's health the analog signal from air data computer, voltage with
The analog signal transmission after conditioning is given to conditioning output port with circuit, is believed the simulation after conditioning by the conditioning output port
Number it is transferred to the detection platform of air data computer；
As shown in Fig. 2, the attenuator circuit includes first resistor R1 and second resistance R2, the filter circuit includes the 3rd
Resistance R3 and capacitance C1, the voltage follower circuit include operational amplifier；One end of first resistor R1 and conditioning input port
Connection, the other end of first resistor R1 are grounded by second resistance R2, and first resistor R1 is connected with the common port of second resistance R2
One end of the 3rd resistor R3, the in-phase input end of the other end concatenation operation amplifier of 3rd resistor R3, the capacitance C1
One end be connected between 3rd resistor R3 and voltage follower circuit, the other end of capacitance C1 ground connection；The output of operational amplifier
End is connected with the inverting input of operational amplifier, and the output terminal of operational amplifier is also connected with the conditioning output port.
In embodiments herein, the TVS pipe model 1.5SMC30A, the operational amplifier uses
OPA2277UA chips.The pinouts of operational amplifier chip OPA2277UA is as shown in figure 3, in this embodiment, chip
1 foot, 5 feet, 8 feet of OPA2277UA are hanging, and 3 feet of chip OPA2277UA are the in-phase input end of amplifier, connect 3rd resistor
R3,7 feet connect the power supply of 12V, and 4 feet connect the power supply of -12V, and 6 feet connect conditioning output port and chip respectively for the output terminal of amplifier
2 feet（The inverting input of amplifier）.
In embodiments herein, a kind of analog input conditioning electricity for air data computer test
Road, further includes regulator circuit, and the regulator circuit is arranged between conditioning input terminal and attenuator circuit.The regulator circuit includes
Two-way TVS pipe, one end of the TVS pipe are connected with conditioning input port, the other end ground connection of TVS pipe, one side of regulator circuit
Signal in face of air data computer input plays pressure stabilization function, on the other hand can also transient suppression surge (startup and closing
When electrical surge or thunder and lightning in the case of electrical surge), circuit is protected.
In embodiments herein, the analog input modulate circuit further includes the 4th resistance R4, the 4th electricity
Resistance R4 is arranged between the output terminal of operational amplifier and the conditioning output port, and the resistance is main to rise as current-limiting resistance
Circuit protection acts on.
In one embodiment, since air data computer external signal species is more, level from 0-28V etc., and
The collection range of detection platform reality only has 10V, and valid data could be measured in range by decay, outranges and is possible to damage
Bad equipment；During the specific analog quantity conditioning of the utility model, first pass through what attenuator circuit inputted air data computer
Signal carries out decay adjustment, makes signal within the collection range for checking platform, then is filtered the conditioning with voltage follow, then
The signal transmission that conditioning obtains is handled to detection platform, detection platform is convenient to and collects valid data, realize air
The test of data computer.
Wherein, attenuator circuit is realized by electric resistance partial pressure, and the decay to signal is mainly by first resistor R1 and
The ratio of two resistance R2 determines, when nursing one's health different air data computers, it may be necessary to different attenuation ratios,
To realize the signal control after decay in the acquisition range for checking platform.Therefore, the utility model can be applied to not
With in the adapter of air data computer；In the analog input modulate circuit of different adapters, first resistor R1 and second
The ratio of resistance R2 is different, and the ratio is according to the collection range of detection platform and the analog quantity transmission quantity of air data computer
Journey, in actual application, selects corresponding adapter, connects air data computer and detection platform, you can realize detection
Platform is acquired the analog input signal of different air data computers.
Claims (6)
- A kind of 1. analog input modulate circuit for air data computer test, it is characterised in that：Inputted including conditioning Port, attenuator circuit, filter circuit, voltage follower circuit and conditioning output port；The conditioning input port receives the analog signal from air data computer, and conditioning input port is sequentially connected decay Circuit, filter circuit and voltage follower circuit, nurse one's health the analog signal from air data computer, voltage follow electricity Conditioning output port is given the analog signal transmission after conditioning in road, is passed the analog signal after conditioning by the conditioning output port It is defeated by the detection platform of air data computer；The attenuator circuit includes first resistor R1 and second resistance R2, and the filter circuit includes 3rd resistor R3 and capacitance C1, the voltage follower circuit include operational amplifier；One end of first resistor R1 is connected with conditioning input port, first resistor The other end of R1 is grounded by second resistance R2, and first resistor R1 connects the 3rd resistor R3 with the common port of second resistance R2 One end, the in-phase input end of the other end concatenation operation amplifier of 3rd resistor R3, one end of the capacitance C1 is connected to Between three resistance R3 and voltage follower circuit, the other end ground connection of capacitance C1；The output terminal and operational amplifier of operational amplifier Inverting input connection, and the output terminal of operational amplifier also with it is described conditioning output port be connected.
- 2. a kind of analog input modulate circuit for air data computer test according to claim 1, it is special Sign is：Regulator circuit is further included, the regulator circuit is arranged between conditioning input terminal and attenuator circuit.
- 3. a kind of analog input modulate circuit for air data computer test according to claim 2, it is special Sign is：The regulator circuit includes two-way TVS pipe, and one end of the TVS pipe is connected to conditioning input terminal and attenuator circuit Between, the other end ground connection of TVS pipe.
- 4. a kind of analog input modulate circuit for air data computer test according to claim 3, it is special Sign is：The TVS pipe model 1.5SMC30A.
- 5. a kind of analog input modulate circuit for air data computer test according to claim 1, it is special Sign is：The operational amplifier uses OPA2277UA chips.
- 6. a kind of analog input modulate circuit for air data computer test according to claim 1, it is special Sign is：The 4th resistance R4 is further included, the 4th resistance R4 is arranged at the output terminal of operational amplifier and the conditioning output Between port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201036.1U CN207280505U (en) | 2017-09-19 | 2017-09-19 | A kind of analog input modulate circuit for air data computer test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201036.1U CN207280505U (en) | 2017-09-19 | 2017-09-19 | A kind of analog input modulate circuit for air data computer test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207280505U true CN207280505U (en) | 2018-04-27 |
Family
ID=61981511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721201036.1U Active CN207280505U (en) | 2017-09-19 | 2017-09-19 | A kind of analog input modulate circuit for air data computer test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207280505U (en) |
-
2017
- 2017-09-19 CN CN201721201036.1U patent/CN207280505U/en active Active
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