Multi-channel adjustable voltage feedback control system in aircraft cockpit

Abstract

The application discloses a multi-path adjustable voltage feedback control system in an aircraft cabin, comprising one potentiometer circuit for providing only one potentiometer voltage, and two or more adjustable voltage feedback control circuits, each of which has a voltage follower, an addition-subtraction operation unit, a voltage regulator and a voltage feedback unit, wherein the voltage follower outputs corresponding following voltage according to the potentiometer voltage from the potentiometer circuit, the addition-subtraction operation unit outputs corresponding control voltage according to the following voltage from the voltage follower and the feedback voltage from the voltage feedback unit, and the voltage regulator outputs corresponding adjustment voltage according to the control voltage from the addition-subtraction operation unit. The application has the beneficial effect of realizing the design of the multi-path adjustable voltage feedback control circuit and meeting the demand of a single single-layer potentiometer for adjusting multiple different voltage outputs.

Description

TECHNICAL FIELD

[0001] The present application relates to voltage processing in an aircraft cabin, in particular, a multi-channel adjustable voltage feedback control system in an aircraft cabin. BACKGROUND

[0002] In the case of increasing requirements for integration and lightness of the aircraft cabin, it is often necessary to adjust multiple different voltage outputs by a single single-layer potentiometer to control different devices. In the current voltage regulation design, different voltage outputs are mainly controlled by multiple potentiometers. By controlling multiple potentiometers, the number of potentiometers is increased, which cannot meet the requirements for integration and lightness of the aircraft cabin. SUMMARY

[0003] The purpose of the present application is to solve the problem of controlling different voltage outputs by multiple potentiometers in the prior art, and to provide a novel multi-channel adjustable voltage feedback control system in an aircraft cabin.

[0004] In order to achieve this purpose, the technical scheme of the present application is as follows: a multi-channel adjustable voltage feedback control system in an aircraft cabin, comprising,

[0005] a potentiometer circuit for providing only one potentiometer voltage; and

[0006] two or more adjustable voltage feedback control circuits, each of the adjustable voltage feedback control circuits has a voltage follower, an addition and subtraction operation unit, a voltage regulator and a voltage feedback unit, wherein the voltage follower outputs a following voltage corresponding to the potentiometer voltage from the potentiometer circuit, the addition and subtraction operation unit outputs a control voltage corresponding to the following voltage from the voltage follower and the feedback voltage from the voltage feedback unit, the voltage regulator outputs an adjustment voltage corresponding to the control voltage from the addition and subtraction operation unit, and the voltage feedback unit outputs a feedback voltage corresponding to the adjustment voltage from the voltage regulator.

[0007] As the preferred scheme of the multi-path adjustable voltage feedback control system in the cockpit of the airplane, the potentiometer circuit is composed of a first working power supply, a potentiometer Rx1, a resistor R1 and a resistor R2; the voltage follower is composed of a second working power supply, a capacitor Ca, a resistor Ra, an operational amplifier Ua and a resistor Rb; the addition and subtraction operation unit is composed of a third working power supply, a power supply VCC, a resistor Rc, a resistor Rd, a resistor Re, a resistor Rf, a resistor Rg, a resistor Rh, a capacitor Cb, a capacitor Cc and an operational amplifier Ub resistor; the voltage regulator is composed of an input voltage, a voltage processor, a resistor Ri, a resistor Rj, a resistor Rk, a resistor Rm, a resistor Rn, an electronic switch Qa, a diode Dc, a capacitor Cd and a capacitor Ce; and the voltage feedback unit is composed of a resistor Ro and a resistor Rp; wherein the first working power supply is connected to the first end of the potentiometer Rx1 and the first end of the resistor R1 respectively, the second end of the potentiometer Rx1 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the ground terminal, the second end of the resistor R1 is connected to the adjusting end of the potentiometer Rx1 and the first end of the resistor Ra respectively, the second end of the resistor Ra is connected to the same-phase input terminal of the operational amplifier Ua, the second end of the capacitor Ca and the negative power supply terminal of the operational amplifier Ua and the first end of the resistor Rb are all connected to the ground terminal, the opposite-phase input terminal of the operational amplifier Ua is connected to the output terminal of the operational amplifier Ua, the second end of the resistor Rb and the first end of the resistor Re respectively, the second end of the resistor Re is connected to the first end of the resistor Rd, the first end of the resistor Rc and the first end of the resistor Rf respectively, the second end of the resistor Rf is connected to the first end of the resistor Rh and the same-phase input terminal of the operational amplifier Ub respectively, the second end of the resistor Rh is connected to the first end of the capacitor Cc, the second end of the resistor Rc, the second end of the capacitor Cb and the negative power supply terminal of the operational amplifier Ub are all connected to the ground terminal, the second end of the resistor Rd is connected to the power supply VCC, the third working power supply is connected to the first end of the capacitor Cb and the positive power supply terminal of the operational amplifier Ub respectively, the output terminal of the operational amplifier Ub is connected to the second end of the capacitor Cc and the first end of the resistor Ri respectively, the second end of the resistor Ri is connected to the first end of the resistor Rj and the control terminal of the electronic switch Qa respectively, the input voltage is connected to the first end of the voltage processor, the second end of the voltage processor is connected to the negative terminal of the diode Dc, the first end of the resistor Rn, the first end of the capacitor Ce and the first end of the resistor Ro respectively, the third end of the voltage processor is connected to the first end of the resistor Rk, the first end of the resistor Rm, the positive terminal of the diode Dc, the second end of the resistor Rn and the first end of the capacitor Cd respectively, the second end of the resistor Ro is connected to the first end of the resistor Rp and the first end of the resistor Rg respectively, the second end of the resistor Rg is connected to the opposite-phase input terminal of the operational amplifier, the second end of the resistor Rj, the second end of the electronic switch Qa, the second end of the resistor Rm, the second end of the capacitor Cd, the second end of the capacitor Ce and the second end of the resistor Rp are all connected to the ground terminal, and the second end of the resistor Rk is connected to the first end of the electronic switch Qa.

[0008] Compared with the prior art, the present application has at least the following beneficial effects: the design of the multi-path adjustable voltage feedback control circuit can meet the demand of a single single-layer potentiometer regulating multi-path different voltage outputs. Attached Figure Description

[0009] Fig. 1 This is a schematic diagram of the circuit structure according to an embodiment of the present invention.

[0010] Fig. 2 This is a circuit diagram of an embodiment of the present invention. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that these descriptions are for the purpose of aiding understanding the invention and do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

[0012] Please see Figs. 1-2 The figure shows a multi-channel adjustable voltage feedback control system in an aircraft cockpit. The control system consists of one potentiometer circuit and two or more adjustable voltage feedback control circuits. Each of these adjustable voltage feedback control circuits includes a voltage follower, an addition / subtraction unit, a voltage regulator, and a voltage feedback unit.

[0013] The following is a detailed explanation using an adjustable voltage feedback control circuit as an example.

[0014] The potentiometer circuit mainly consists of a working voltage 1, a ground terminal (GND), a potentiometer Rx1, a resistor R1, and a resistor R2. The working voltage 1 (in this embodiment, a DC 5V voltage) serves as the operating power supply for the potentiometer circuit. The ground terminal (GND) serves as the operating power ground for the potentiometer circuit. The potentiometer Rx1 acts as an adjustment device. The resistor R1 ensures that the potentiometer circuit has a basic voltage output when the potentiometer fails. The resistor R2 ensures that the potentiometer has a voltage output when its position is within the dead range.

[0015] The voltage follower (channel 1) mainly consists of a power supply 2, ground (GND), capacitor Ca_1, resistor Ra_1, operational amplifier Ua_1A, and resistor Rb_1. The power supply 2 (in this embodiment, a DC 15V voltage) serves as the operating power supply for the voltage follower (channel 1), the ground (GND) serves as the operating ground for the voltage follower (channel 1), and capacitor Ca_1 serves as a bypass capacitor for the operational amplifier Ua_1A.

[0016] The addition and subtraction operation unit (1st path) is mainly composed of a working power supply 3, VCC, a ground terminal (GND), a resistor Rc_1, a resistor Rd_1, a resistor Re_1, a resistor Rf_1, a resistor Rg_1, a resistor Rh_1, a capacitor Cb_1, a capacitor Cc_1, and an operational amplifier Ub_1A. The working power supply 3 (in this embodiment, a direct current 15V voltage) is used as the working power supply of the addition and subtraction operation circuit (1st path), the capacitor Cb_1 is used as the bypass capacitor of the operational amplifier Ub_1A, the resistor Rh_1 and the capacitor Cc_1 constitute an RC filter circuit, and the resistor Rc_1 and the resistor Rd_1 can be adjusted to control the voltage value output by the voltage regulator (1st path) with high precision.

[0017] The voltage regulator (1st path) is mainly composed of an input voltage, a ground terminal (GND), a voltage processor (1st path), a resistor Ri_1, a resistor Rj_1, a resistor Rk_1, a resistor Rm_1, a resistor Rn_1, an electronic switch Qa_1 (in this embodiment, a MOS tube), a diode Dc_1, a capacitor Cd_1, and a capacitor Ce_1. The input voltage is used as the input voltage of the voltage regulator, the ground terminal (GND) is used as the working power supply ground of the voltage regulator (1st path), the voltage processor (1st path) (in this embodiment, a three-terminal voltage regulator) is used to convert the input voltage into a required voltage output, the resistor Ri_1, the resistor Rj_1, and the electronic switch Qa_1 (in this embodiment, a MOS tube) constitute a switching circuit, and the capacitor Cd_1 and the capacitor Ce_1 constitute a filter circuit.

[0018] The voltage feedback circuit (1st path) is mainly composed of a resistor Ro_1 and a resistor Rp_1. The required voltage output by the voltage regulator is divided by the resistor Ro_1 and the resistor Rp_1 and then fed back to the addition and subtraction operation circuit.

[0019] The present application has the characteristics of adjusting multiple different voltage outputs by a single single-layer potentiometer, high output voltage precision, and no interference between multiple paths.

[0020] The above only expresses the embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A multi-channel adjustable voltage feedback control system in an aircraft cockpit, characterized in that, comprising, a one-way potentiometer circuit for providing only one potentiometer voltage; and two or more adjustable voltage feedback control circuits, each of the adjustable voltage feedback control circuits having a voltage follower, an addition-subtraction operation unit, a voltage regulator, and a voltage feedback unit, wherein the voltage follower outputs a corresponding following voltage according to the potentiometer voltage from the one-way potentiometer circuit, the addition-subtraction operation unit outputs a corresponding control voltage according to the following voltage from the voltage follower and a feedback voltage from the voltage feedback unit, the voltage regulator outputs a corresponding regulated voltage according to the control voltage from the addition-subtraction operation unit, and the voltage feedback unit outputs a corresponding feedback voltage according to the regulated voltage from the voltage regulator; The potentiometer circuit is composed of a first working power supply, a potentiometer Rx1, a resistor R1 and a resistor R2, the voltage follower is composed of a second working power supply, a capacitor Ca, a resistor Ra, an operational amplifier Ua and a resistor Rb, the addition and subtraction operation unit is composed of a third working power supply, a power supply VCC, a resistor Rc, a resistor Rd, a resistor Re, a resistor Rf, a resistor Rg, a resistor Rh, a capacitor Cb, a capacitor Cc and an operational amplifier Ub resistor, the voltage regulator is composed of an input voltage, a voltage processor, a resistor Ri, a resistor Rj, a resistor Rk, a resistor Rm, a resistor Rn, an electronic switch Qa, a diode Dc, a capacitor Cd and a capacitor Ce, and the voltage feedback unit is composed of a resistor Ro and a resistor Rp; wherein the first working power supply is connected with the first end of the potentiometer Rx1 and the first end of the resistor R1 respectively, the second end of the potentiometer Rx1 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the ground terminal, the second end of the resistor R1 is connected with the adjusting end of the potentiometer Rx1 and the first end of the resistor Ra respectively, the second end of the resistor Ra is connected with the same-phase input end of the operational amplifier Ua, the first end of the capacitor Ca and the positive power supply end of the operational amplifier Ua are connected with the second working power supply, the second end of the capacitor Ca, the negative power supply end of the operational amplifier Ua and the first end of the resistor Rb are all connected with the ground terminal, the inverse-phase input end of the operational amplifier Ua is connected with the output end of the operational amplifier Ua, the second end of the resistor Rb and the first end of the resistor Re respectively, the second end of the resistor Re is connected with the first end of the resistor Rd, the first end of the resistor Rc and the first end of the resistor Rf respectively, the second end of the resistor Rf is connected with the first end of the resistor Rh and the same-phase input end of the operational amplifier Ub respectively, the second end of the resistor Rh is connected with the first end of the capacitor Cc, the second end of the resistor Rc, the second end of the capacitor Cb and the negative power supply end of the operational amplifier Ub are all connected with the ground terminal, the second end of the resistor Rd is connected with the power supply VCC, the first end of the capacitor Cb and the positive power supply end of the operational amplifier Ub are connected with the third working power supply, the output end of the operational amplifier Ub is connected with the second end of the capacitor Cc and the first end of the resistor Ri respectively, the second end of the resistor Ri is connected with the first end of the resistor Rj and the control end of the electronic switch Qa respectively, the first end of the resistor Rk, the first end of the resistor Rm, the positive end of the diode Dc, the second end of the resistor Rn and the first end of the capacitor Ce are all connected with the second end of the voltage processor, the third end of the voltage processor is connected with the first end of the resistor Rm, the first end of the resistor Rk, the positive end of the diode Dc, the second end of the resistor Rn and the first end of the capacitor Cd respectively, the first end of the resistor Ro and the first end of the resistor Rg are connected with the second end of the resistor Ro respectively, the second end of the resistor Rg is connected with the inverse-phase input end of the operational amplifier Ub, the second end of the resistor Rj, the second end of the electronic switch Qa, the second end of the resistor Rm, the second end of the capacitor Cd, the second end of the capacitor Ce and the second end of the resistor Rp are all connected with the ground terminal, and the second end of the resistor Rk is connected with the first end of the electronic switch Qa.

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