Novel stack type airborne comprehensive signal conditioning equipment

Abstract

The invention relates to stack type airborne comprehensive signal conditioning equipment, and belongs to the technical field of airborne signal processing. The equipment comprises a power management module, a signal conditioning module, a signal isolation module and an output and interface management module. The power supply management module obtains electric energy from an airborne power supply system, monitors input voltage and stably outputs multiple paths of voltage; the signal conditioning module is used for conditioning the high-voltage signal, the analog signal and the switching value signal based on the control unit; the signal isolation module ensures electrical isolation among different signals through photoelectric isolation; and the output and interface management module adjusts the signal output voltage according to system requirements and identifies external equipment. According to the equipment, the flexibility and compatibility of the system are improved through modular design, the limited airborne space is effectively utilized, and the stability and reliability of the signal acquisition system are ensured.

Description

Technical Field

[0001] The invention relates to an airborne integrated signal conditioning device, in particular to a novel stacked airborne integrated signal conditioning device. Background Art

[0002] With the rapid development of aviation technology, the types and number of signals that need to be processed and collected in modern aircraft are increasing day by day. Especially in complex flight environments, different signal types such as high-voltage signals, analog signals, and switch signals need to be conditioned at the front end before they can be effectively collected. However, traditional signal conditioning equipment is often designed for specific signals, which requires multiple independent devices for signal conditioning in airborne test systems, resulting in redundant equipment, bulky size, and increased difficulty in installing and maintaining airborne equipment.

[0003] In addition, the airborne equipment space is limited and the power supply is restricted. Traditional signal conditioning equipment is difficult to provide stable and reliable signal conditioning functions in such a small space. At the same time, facing the complex power supply environment, how to ensure that the equipment can continue to work stably when the voltage fluctuates and the load changes, and has overload protection function, is also a major challenge in the current design of airborne signal conditioning equipment. Therefore, there is an urgent need for a signal conditioning device that can efficiently condition multiple types of signals in a limited space, has modular design and dynamic power management capabilities, to ensure the stable operation of the signal acquisition system and the long-term reliability of the equipment. Summary of the invention

[0004] The present invention provides a novel stacked airborne integrated signal conditioning device to solve the problem of how to achieve efficient conditioning and isolation of various types of signals within a limited airborne equipment space through a modular stack design, ensure the stable operation of a signal acquisition system, and provide dynamic power management and overload protection functions.

[0005] In order to solve the above problems, the present invention provides a novel stacked airborne integrated signal conditioning device, comprising: The power management module is used to obtain power from the onboard power system, monitor the input voltage, and output multiple voltages stably through the voltage regulator, and dynamically adjust the output power based on the intelligent power management mechanism; A signal conditioning module, used to receive high voltage signals, analog signals and switch signals, analyze the voltage, frequency and impedance characteristics of the input signals, and select an appropriate signal conditioning mode based on the control unit to condition the signals; A signal isolation module is used to electrically isolate the input signal through a photoelectric isolation unit; The output and interface management module is used to receive conditioned signals and output multiple voltages according to system requirements, automatically identify the type of external equipment and adjust the voltage standard of the output signal.

[0006] Furthermore, the power management module includes: The voltage detection unit is used to detect the input voltage in real time and compare it with the set range. When the input voltage is within the range of 12V to 36V, a voltage regulation signal is output.

[0007] Furthermore, the power management module further includes: The overload protection circuit is used to automatically cut off the power supply when it detects that the current or voltage exceeds the preset threshold, and automatically restore the power supply after the fault is eliminated.

[0008] Furthermore, the signal conditioning module also includes: The adaptive conditioning unit is used to perform proportional regulation on the high voltage signal, impedance regulation on the 1 / 4 bridge signal, and filtering and amplifying the high impedance signal based on the signal conditioning mode selected by the control unit.

[0009] Furthermore, the signal conditioning module includes: The frequency detection circuit is used to detect the frequency of the input signal and select a corresponding conditioning mode according to the frequency.

[0010] Furthermore, the signal conditioning module includes: The impedance matching circuit is used to perform impedance matching according to the impedance characteristics of the input signal to maintain stability during signal transmission.

[0011] Furthermore, the signal isolation module includes: Programmable isolation chip, used to dynamically adjust isolation parameters according to the type of input signal, so that the isolation effect matches the signal type.

[0012] Furthermore, the photoelectric isolation unit of the isolation module is used to perform photoelectric isolation on the switch signal.

[0013] Furthermore, the output and interface management module includes: The interface detection unit is used to automatically detect and identify the signal type of the connected external device and adjust the output voltage according to the identification result.

[0014] Furthermore, the output and interface management module supports hot-swap operation of devices, maintaining continuity of signal transmission when devices are connected or disconnected.

[0015] The key innovative features of the present invention include: (1) Modular stack design: It enables flexible combination of various signal conditioning devices, improving the space utilization and scalability of the system.

[0016] (2) Intelligent power management mechanism: By dynamically adjusting the output power, it ensures that the device can operate stably under different voltage and load conditions.

[0017] (3) Control unit: automatically selects the appropriate signal conditioning mode to achieve efficient signal conditioning and real-time adjustment.

[0018] (4) Signal isolation and protection: Photoelectric isolation is used to ensure electrical isolation between different types of signals, prevent signal interference, and improve system stability.

[0019] The following are its main beneficial effects: (1) The present invention solves the problem of efficient conditioning and isolation of multiple signals in a limited airborne space through a modular stack design. By adopting a power management module, the device can obtain power from the airborne power system, ensure the stability of the input voltage in the range of 12V to 36V, and dynamically adjust the output power based on the intelligent power management mechanism to ensure the normal operation of the device under different load conditions. Compared with the traditional fixed power management method, the present invention can better adapt to the complex airborne environment and ensure the flexibility of power regulation.

[0020] (2) Through the signal conditioning module, the present invention can automatically analyze the voltage, frequency and impedance characteristics of the input signal, and select the appropriate conditioning mode based on the AI ​​control unit, such as proportional adjustment of high-voltage signals, impedance conditioning of 1 / 4 bridge signals, etc., to ensure the accurate conditioning and transmission of various signals in the system. The signal isolation module realizes electrical isolation of different types of signals through the optoelectronic isolation unit, prevents interference between signals, and improves the signal transmission reliability of the system.

[0021] (3) The output and interface management module can automatically identify the signal type of the connected device, adjust the voltage standard of the output signal in real time, support hot-swap operations of external devices, and ensure the compatibility of the device under complex working conditions and the continuity of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an integrated signal conditioner of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Figure 2 It is a structural block diagram of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a flow chart of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Figure 4 A schematic diagram of a novel stacked airborne integrated signal conditioning device integrated signal conditioning device provided by an embodiment of the present invention; Figure 5A schematic diagram of a novel stacked airborne integrated signal conditioning device power supply module provided by an embodiment of the present invention; Figure 6 A schematic diagram of a 270V high voltage DC regulation module of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Figure 7 A schematic diagram of a high impedance module of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Figure 8 A schematic diagram of a switch quantity isolation module of a novel stack-type airborne integrated signal conditioning device provided by an embodiment of the present invention; Fig. 9 A schematic diagram of a quarter-bridge signal conditioning module of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Fig.10 An embodiment of the present invention provides a novel stacked airborne integrated signal conditioning device excitation voltage output module; Fig.11 A schematic diagram of the switch quantity optical coupling isolation of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention; Fig.12 A schematic diagram of an excitation voltage output of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention relates to a stacked airborne integrated signal conditioning device, belonging to the technical field of airborne signal processing. The device comprises a power management module, a signal conditioning module, a signal isolation module and an output and interface management module. The power management module obtains electric energy from the airborne power system, monitors the input voltage and outputs multiple voltages stably; the signal conditioning module conditions the high-voltage signal, analog signal and switch signal based on the control unit; the signal isolation module ensures the electrical isolation between different signals through photoelectric isolation; the output and interface management module adjusts the signal output voltage and identifies external devices according to system requirements. The device improves the flexibility and compatibility of the system through modular design, effectively utilizes the limited airborne space, and ensures the stability and reliability of the signal acquisition system.

[0024] A novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention is mainly used to solve the technical problem solved by the present invention, which is "how to achieve efficient conditioning and isolation of various types of signals through modular stack design within a limited airborne equipment space, ensure the stable operation of the signal acquisition system, and provide dynamic power management and overload protection functions."

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit and scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] Embodiment 1: Figure 2 This is a structural block diagram of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention. The structural module includes the following parts: Power management module 10: used to obtain power from the onboard power system, monitor whether the input voltage is within the range of 12V to 36V, and output multiple voltages (such as 5V, 10V, 12V) stably through the voltage regulator. The module also adjusts the output power in real time based on the intelligent power management mechanism to ensure the stable operation of the device under different load conditions, and automatically triggers the protection mechanism when voltage and current overloads are detected.

[0028] Signal conditioning module 20: used to receive various signal types (including high-voltage signals, analog signals and switch signals), and analyze the voltage, frequency and impedance characteristics of the input signal through the signal detection unit. The module adaptively selects a suitable signal conditioning mode (such as high-voltage signal proportional adjustment, 1 / 4 bridge signal conditioning, high impedance signal conditioning) based on the control unit, amplifies, attenuates and filters the signal to ensure that the output signal meets the system requirements.

[0029] Signal isolation and protection module 30: Isolates input signals based on the optoelectronic isolation unit to ensure that there is no electrical interference between different types of signals. The module can monitor the voltage and current of the isolated signal in real time, and activate the overload protection mechanism when the signal exceeds the set threshold. The programmable isolation chip dynamically adjusts the isolation parameters to match the input signal type and system requirements.

[0030] Output and interface management module 40: Receives processed signals from the signal conditioning module, is responsible for multi-channel signal output, and monitors the voltage and current parameters of the output signal in real time. The module automatically identifies the connected external device through the interface detection unit and adjusts the output signal voltage standard to ensure the compatibility of the device. In addition, it supports device hot-swap operation to ensure the continuity and stability of signal transmission when the device is connected and disconnected.

[0031] Reference Figure 3 , is a flow chart of a novel stacked airborne integrated signal conditioning device provided by an embodiment of the present invention, wherein the novel stacked airborne integrated signal conditioning device may at least include steps S100-S400: S100, based on input voltage detection and, adjusts output voltage in real time and dynamically manages power consumption, while providing overload and short-circuit protection.

[0032] S200, through the control unit adaptively adjusts high voltage, 1 / 4 bridge and high impedance signals, real-time monitoring and adjustment of circuit parameters.

[0033] S300 isolates and monitors overload of input signals based on the photoelectric isolation unit, and dynamically adjusts the isolation circuit.

[0034] S400 monitors and outputs multiple voltages in real time, automatically identifying external device signal requirements.

[0035] Step S100 includes steps S110-S130: S110: Based on the input power interface, collect and detect the input voltage, and adjust the voltage through a voltage regulator to generate a regulated output signal. Specifically: In step S110, the intelligent power supply and management module first receives external power through the power input interface. The power input interface is connected to the main power supply in the airborne system, and the input voltage range is set to 12V to 36V. At this stage, the voltage detection unit monitors the input voltage in real time. and compares it to a preset voltage range.

[0036] Specifically, if Conditions met: 12V≤ ≤36V, the voltage regulator starts to work and converts the input voltage into the required stable output voltage The function of the voltage regulator is to ensure that the fluctuation of the input voltage does not affect the normal operation of the system. During the real-time detection process, the voltage detection unit collects (t) (input voltage changing with time) and compares it with the target voltage value to ensure that the voltage fluctuation is within the allowable range.

[0037] Furthermore, the output voltage value after the voltage regulator is adjusted The following standards should be maintained: =12V, 5V, ±12V, the stable voltage value will be provided to the subsequent signal conditioning module, isolation module and interface management module.

[0038] S120, acquiring the power consumption data of each module, and dynamically adjusting the output voltage based on the prediction of future power consumption requirements. Specifically: After the voltage regulation is completed, the intelligent power management unit is started in step S120. The unit collects the power consumption data of each module in real time through the power consumption sensor of each module. (t), where i represents different modules (such as signal conditioning module, isolation module, etc.), and predicts future power consumption requirements based on the historical operating data and current load conditions of each module.

[0039] Smart power management unit can predict future moments Power consumption , the formula is as follows: in, Indicates the power consumption of each module at the current moment; Indicates the rate of change of power consumption; Represents the time step of the prediction.

[0040] The prediction results will be used to dynamically adjust the power output to ensure that each module can get enough power under different load conditions. The power management unit monitors the load changes of the equipment in real time and dynamically adjusts the power distribution circuit. The power supply ensures the stable operation of the system in different working modes.

[0041] S130, monitoring the current change of the signal, when the current exceeds the safety threshold, triggering the overload protection mechanism, cutting off the power supply, and automatically restoring the power supply after the fault is eliminated. Specifically: During system operation, step S130 continuously monitors the change of current I(t) through the protection circuit, especially the current value of each module. (t). If the current of a module exceeds the safety threshold , it will be judged as an overload short circuit. At this time, the protection circuit will automatically cut off the power supply to prevent the system from overheating and damage.

[0042] Specifically, the overload conditions are: (t)> When the above conditions are met, the protection circuit immediately acts, cuts off the power supply of the module, records the fault information at this time, and starts the automatic recovery mechanism. After the overload is removed, the recovery mechanism will automatically restart the power supply and restore the system to normal working state.

[0043] Furthermore, the current detection data (t) and the short-circuit event record will be transmitted to the subsequent intelligent signal conditioning module S220 as a reference for power consumption and current abnormalities. This result will affect the conditioning strategy of the intelligent signal conditioning module to ensure that the safety of the current load is taken into account during the conditioning process.

[0044] Notes on the connection between the previous and next steps: Module current calculated in S130 (t) and fault record data will be passed as input to the S220 intelligent signal conditioning module to adjust the parameter settings of the signal conditioning circuit to ensure that the current load of the conditioning circuit meets safety standards and avoid signal distortion caused by overload.

[0045] Step S200 at least includes steps S210-S230: S210: Based on the signal detection unit receiving and identifying the input signal type, the voltage, frequency and impedance characteristics of the input signal are obtained. Specifically: In step S210, the intelligent signal conditioning module first receives different types of signals from external devices, including high voltage signals. ,analog signal And switch signal The signal enters the signal detection unit through the input terminal, and the detection unit collects the basic parameters of the input signal in real time, including voltage ,frequency and impedance .

[0046] Specifically, the voltage of the input signal It is expressed by the following formula: = + frequency According to the characteristics of the signal source, the frequency detection unit performs real-time measurement. It is identified by an impedance measurement circuit using the following formula: in, is the input current at the time of detection.

[0047] The detection unit further determines the input current (t) (This value comes from the current monitoring data in the S130 stage) The impedance is corrected to ensure that the signal conditioning parameters match the input data. The signal parameter data in the above steps will be passed to the S220 stage as the basic data for subsequent adaptive conditioning.

[0048] S220: Based on the analysis result of the control unit, adaptively select a signal conditioning mode to condition the high voltage signal, the quarter bridge signal and the high impedance signal. Specifically: In step S220, the intelligent signal conditioning module is based on the signal parameters obtained in step S210. , and , and current data obtained from S130 , start the control unit for analysis and automatically select the appropriate signal conditioning mode.

[0049] Specifically, different conditioning methods are selected according to different signal types: 1. High voltage signal: For the input high voltage signal The system uses proportional regulation to convert the input voltage into a collectable voltage through the proportional factor k. , the formula is as follows: Where k = 36 is the high voltage regulation proportional coefficient, which ensures that the voltage range of the high voltage signal after conditioning meets the system requirements (0~10V).

[0050] 2. 1 / 4 bridge signal conditioning: For 1 / 4 bridge signals, use impedance matching circuit to adjust the impedance , ensuring the stability of signal transmission. The output impedance after adjustment It is expressed as: = ⋅ in, It is the impedance matching parameter set inside the system to ensure signal stability.

[0051] 3. High impedance signal: For high impedance signal , the system will automatically adjust the parameters of the filter and capacitor in the circuit to reduce signal attenuation. The output voltage after high impedance conditioning is calculated by the following formula : in, is the impedance value of a high impedance input signal.

[0052] The conditioned signal output parameters and It will be passed to the next step S230 dynamic parameter adjustment to further ensure the accuracy and stability of the output signal.

[0053] S230, monitor the state of the conditioning signal in real time, and dynamically adjust the parameters of the filter, capacitor, etc. of the circuit. Specifically: In step S230, the control unit continuously monitors the input signal (t) and The dynamic change of (t) is used to adjust the parameters of components such as filters and capacitors in the conditioning circuit in real time to ensure that the signal remains stable under changing input conditions.

[0054] Specifically, the control unit calculates the rate of change of the conditioning parameter , where X represents the circuit component parameters (such as filter frequency Capacitor value C). The conditioning circuit adjusts the capacitor value in real time according to the following formula: Where C(t) represents the current capacitance value; Indicates the rate of change of capacitance, which is calculated by the control unit based on the rate of change of the input signal; Represents the time step of the adjustment.

[0055] The control unit adjusts the circuit parameters so that the voltage, frequency and impedance of the output signal can remain stable under different input conditions. (t) (t) Meet the accuracy requirements of the system.

[0056] Description of the previous and next steps: Signal parameters obtained by S210 , and It is the basic data of S220 adaptive conditioning. The selection of conditioning mode depends on the characteristics of the input signal.

[0057] Current data for the S130 stage It is used by the S210 stage for impedance measurement and correction to ensure matching of current load and impedance in subsequent signal conditioning.

[0058] Conditioning results in S220 and It is transmitted to the S230 stage for the control unit to dynamically adjust the component parameters of the conditioning circuit to ensure the accuracy of the signal output.

[0059] Step S300 at least includes steps S310-S330: S310, isolating the input signal through the photoelectric isolation unit. Specifically: In step S310, the signal isolation module first isolates the input signal through the photoelectric isolation unit. This step is based on the signal type (high voltage signal, analog signal switch signal) obtained from the previous S210 signal input detection stage for isolation processing. The photoelectric isolation unit electrically isolates the input signal from the subsequent circuit through a photoelectric coupling device to ensure that no interference or crosstalk occurs between different signals.

[0060] Specifically, the input signal After detection, select the appropriate isolation method according to the signal type. For example, for a switch signal , high voltage and low voltage signals are isolated through photoelectric isolation. Analog signal The analog isolation circuit is used to ensure the transmission stability. The output signal after isolation processing It is expressed as: in, The isolation factor ensures that the signal maintains an appropriate level after isolation.

[0061] Isolated signal generated in S310 It will be passed to the subsequent S320 overload monitoring step to monitor the signal status after isolation.

[0062] S320: Based on the signal monitoring unit, obtain the voltage, current and frequency parameters of the isolation signal. Specifically: In step S320, the voltage of the signal is monitored in real time. , Current and frequency , to ensure that it is within the safe range. This monitoring data comes from the current detection results in step S130 (t) and compares it with the isolation status of the current signal. The system judges the voltage and current according to the set safety threshold. When the signal voltage and current exceed the set safety threshold, the protection circuit automatically starts.

[0063] The overload conditions are: > > in, and The current and voltage safety thresholds are preset. Once the signal overload is detected, the protection circuit immediately cuts off the signal path to prevent the device from being damaged due to overload and short circuit. The system will record the current time And the signal parameters when the fault occurs for subsequent analysis.

[0064] Furthermore, after the overload is released, the system automatically resumes signal transmission and reopens the isolated signal channel.

[0065] S330: Based on the intelligent control unit, dynamically adjust the parameters of the isolation circuit. Specifically: In step S330, the signal isolation module dynamically adjusts the working state of the isolation circuit according to the analysis results of the intelligent control unit. ,frequency and current ,The programmable isolation chip can adjust the isolation parameters in real time, so that the isolation circuit can flexibly respond to changes in the input signal type.

[0066] Understandably, the main parameters to adjust include the sensitivity of the opto-isolator and isolation time constant The specific calculation formula is as follows: By adjusting , which can optimize the response speed of the isolation circuit to high-frequency and low-frequency signals, ensuring that the signal maintains a stable isolation effect under different input conditions.

[0067] The adjusted isolation parameters are transmitted to the output interface module (S400) to ensure that the dynamically isolated signal can be transmitted to the external device in a stable manner.

[0068] Previous and next steps: Isolation processing signal in S310 stage and It is the input signal of S320 overload monitoring, used to monitor the signal status after isolation in real time.

[0069] Current data for the S130 stage Used for overload monitoring of the S320 stage to ensure that the current load and isolation circuit are matched.

[0070] The isolation parameter adjustment results of the S330 stage will be passed to the S400 output and interface management module to ensure that the output signal remains stable after passing the isolation.

[0071] Step S400 at least includes steps S410-S430: S410, receiving the conditioned signal from the signal conditioning module, outputting multiple voltages based on system requirements, and monitoring the voltage and current parameters of the signal in real time. Specifically: In step S410, the output and interface management module receives the signal conditioned in step S220 (adaptive signal conditioning) and , and output multiple voltages according to system requirements. When the signal passes through the output circuit, it will automatically select the appropriate voltage standard according to the requirements of different external devices, such as 10V, 5V12V.

[0072] Specifically, the voltage of the output signal and current It will monitor in real time and make adjustments according to the equipment standards. The output circuit will dynamically adjust the output voltage , ensuring stable voltage under different load conditions: in, Indicates the set target output voltage; Indicates the rate of voltage change, which is determined by the load change; Indicates the adjustment time interval.

[0073] The output circuit will continuously adjust according to the changes in the input signal and the specific needs of the external device. and , ensuring that the signal output meets the equipment requirements. The adjusted output signal will be transmitted to the external device, and the changes in voltage and current will be monitored in real time to ensure stable signal output.

[0074] S420: Automatically detect the connected external device through the interface identification module, identify the signal type and voltage requirement of the device, and automatically adjust the output signal parameters. Specifically: In step S420, the interface management module starts to work, automatically detects and identifies the type of external device connected through the interface identification unit, and reads its signal standard and voltage requirements. Specifically, the system will and , and combined with the interface protocol of the device, automatically adjust the voltage and parameters of the output signal to ensure compatibility with external devices.

[0075] For example, if it is detected that the connected device requires a 5V signal, the interface automatic identification module will automatically adjust the output voltage through the following algorithm: in, Indicates the voltage value that needs to be adjusted; is the current output voltage; Requires voltage for external devices.

[0076] The interface management module will Adjust the voltage and current of the output signal to ensure that it matches the input requirements of the external device, and monitor changes in the output signal parameters in real time.

[0077] S430, monitoring the connection and disconnection status of external devices, and dynamically adjusting the signal output. Specifically: In step S430, the interface management module monitors the connection and disconnection status of the external device in real time through the detection unit. The system can understandably detect the connection and disconnection status of the external device through the interface current. and voltage to identify device connection and disconnection and support hot-plug operations.

[0078] Specifically, the system identifies device status changes based on the following conditions: > > in, and These are the current and voltage thresholds when the device is connected.

[0079] When a device is connected, the system will automatically adjust the output signal parameters to ensure the continuity and stability of the signal connection. The output circuit will automatically configure the corresponding signal standard when the device is connected, and immediately stop signal transmission when the device is disconnected to avoid system interruption and instability caused by device disconnection.

[0080] Previous and next steps: Output signals in S410 and The signal conditioning result from S220 ensures that the output signal matches the requirements of external devices.

[0081] Device parameters identified in S420 and It will be fed back to step S410 to dynamically adjust the output signal to ensure stable signal transmission.

[0082] S430 identifies the device access status through current and voltage monitoring, and combines it with the interface identification information of S420 to ensure safe and reliable signal transmission of external devices.

[0083] Embodiment 2: Figure 1 Schematic diagram of a novel stacked integrated signal conditioner for an onboard integrated signal conditioning device provided by an embodiment of the present invention. The structure of the device is as follows: Figure 4 As shown in the figure, the panel contains six modules, the first of which is the equipment power supply module, and the others are 270V high voltage DC regulation module, high impedance module, switch quantity isolation module, 1 / 4 bridge signal conditioning module and DC voltage output module. Figure 5As shown, it mainly provides independent regulated DC power supply for each module of the equipment, and uses board connectors to supply power between boards. The power module includes an onboard power supply voltage input port, an LED indicator light, and a grounding column. The power supply voltage supports a wide range of 12~36V. The indicator light is green, and when it is on, it means that the equipment power supply module is working normally. The power module includes a 3A filter model TF-TRD3AT2, a 12VDCDC module model TDPCGV28S12W5T, a ±12VDCDC module model TDPCGV28D12W5T, and a 5VDCDC module model TDPCGV28S5W5T. 270V high-voltage DC regulation module as shown Figure 6 As shown, the main function is to linearly adjust the airborne 0~360V high voltage signal to a 0~10V signal that can be collected by the collector at a ratio of 1 / 36 for output. The module includes two inputs and two outputs. Figure 7 The left interface is the high voltage input signal interface, and the right interface is the conditioned 0~10V signal output interface. Figure 5 As shown, it mainly realizes the high impedance of the path. When the device is powered on, the input and output terminals are in a conductive state, and when the device is powered off, the input and output terminals are in a high impedance state. The module includes four inputs and four outputs. Figure 8 As shown, it mainly realizes the signal isolation of the three signals of 28V / ground, 28V / open, and open / ground in the switch signal. The input signals of 28V / ground, 28V / open, and open / ground correspond to independently isolated 5V / 0V output signals, using photoelectric isolation mode. A single module contains a total of 32 channels, of which 20 channels support photoelectric isolation of 28V / ground and 28V / open signals. 12 channels support photoelectric isolation of 28V / ground, 28V / open, and open / ground signals. The panel is equipped with a dip switch, a 37-pin signal input interface, and a 37-hole signal output interface. When the dip switch is in the off position, the 28V / ground and 28V / open signals can be photoelectrically isolated. When the dip switch is in the ON position, the open / ground signal can be photoelectrically isolated. The 1 / 4 bridge signal conditioning module is as follows Fig. 9 As shown in the figure, the module mainly eliminates the impedance interference caused by the long-distance installation of the sensor. The module includes 12-way 1 / 4 bridge signal conditioning. The panel includes a 37-pin input interface and a 51-pin output interface. The DC voltage output module is shown in the figure. Fig.10 As shown, it is mainly responsible for providing excitation voltage for the sensor. The module contains ten 10V voltages, four 5V voltages and two 12V voltage outputs. The panel is equipped with a 51-hole excitation voltage output interface. The schematic diagram of the switch signal isolation is shown in Fig.11As shown, the front and rear stages are mainly isolated through optical couplers. When the input signal is 28V / ground 28V / open circuit, the output voltage is 5V / 0V. When the input signal is an open / ground signal, press the dip switch to ON, and 12V is connected to the input end. When an open circuit signal is input, the output is a 5V high level, and when the input is a ground signal, the output is a 0V low level. The 12V and 5V voltages required by the module are provided by the power module through the board connector. The excitation voltage output module includes 10 10V excitation voltage outputs, 4 5V excitation voltage outputs, and 2 12V excitation voltage outputs. The schematic diagram of the 10V / 5V excitation voltage output is shown in the figure. Fig.12 As shown, the 10V reference voltage chip outputs the reference voltage to the voltage follower composed of 10 op amps, which respectively generate 10 10V excitation voltage outputs. The 5V reference voltage chip outputs the reference voltage to the voltage follower composed of 4 op amps, which respectively generate 4 5V excitation voltage outputs. The 12V voltage required by the op amp and the reference voltage chip is generated by a ±12VDCDC power supply of model TDPCGV28D12W5T, and the power supply is responsible for the output of 2 12V excitation voltages.

[0084] The key innovative features of the present invention include: (1) Modular stack design: It enables flexible combination of various signal conditioning devices, improving the space utilization and scalability of the system.

[0085] (2) Intelligent power management mechanism: By dynamically adjusting the output power, it ensures that the device can operate stably under different voltage and load conditions.

[0086] (3) Control unit: automatically selects the appropriate signal conditioning mode to achieve efficient signal conditioning and real-time adjustment.

[0087] (4) Signal isolation and protection: Photoelectric isolation is used to ensure electrical isolation between different types of signals, prevent signal interference, and improve system stability.

[0088] The following are its main beneficial effects: (1) The present invention solves the problem of efficient conditioning and isolation of multiple signals in a limited airborne space through a modular stack design. By adopting a power management module, the device can obtain power from the airborne power system, ensure the stability of the input voltage in the range of 12V to 36V, and dynamically adjust the output power based on the intelligent power management mechanism to ensure the normal operation of the device under different load conditions. Compared with the traditional fixed power management method, the present invention can better adapt to the complex airborne environment and ensure the flexibility of power regulation.

[0089] (2) Through the signal conditioning module, the present invention can automatically analyze the voltage, frequency and impedance characteristics of the input signal, and select the appropriate conditioning mode based on the AI ​​control unit, such as proportional adjustment of high-voltage signals, impedance conditioning of 1 / 4 bridge signals, etc., to ensure the accurate conditioning and transmission of various signals in the system. The signal isolation module realizes electrical isolation of different types of signals through the optoelectronic isolation unit, prevents interference between signals, and improves the signal transmission reliability of the system.

[0090] (3) The output and interface management module can automatically identify the signal type of the connected device, adjust the voltage standard of the output signal in real time, support hot-swap operations of external devices, and ensure the compatibility of the device under complex working conditions and the continuity of signal transmission.

[0091] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes and substitutions within the technical scope disclosed in the present application, and the above should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A stacked airborne integrated signal conditioning device, characterized in that: include: The power management module is used to obtain power from the onboard power system, monitor the input voltage, and output multiple voltages stably through the voltage regulator, and dynamically adjust the output power based on the intelligent power management mechanism; A signal conditioning module, used to receive high voltage signals, analog signals and switch signals, analyze the voltage, frequency and impedance characteristics of the input signals, and select an appropriate signal conditioning mode based on the control unit to condition the signals; A signal isolation module is used to electrically isolate the input signal through a photoelectric isolation unit; The output and interface management module is used to receive conditioned signals and output multiple voltages according to system requirements, automatically identify the type of external equipment and adjust the voltage standard of the output signal.

2. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that: The power management module comprises: The voltage detection unit is used to detect the input voltage in real time and compare it with the set range. When the input voltage is within the range of 12V to 36V, a voltage regulation signal is output.

3. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that: The power management module also includes: The overload protection circuit is used to automatically cut off the power supply when it detects that the current or voltage exceeds the preset threshold, and automatically restore the power supply after the fault is eliminated.

4. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that: The signal conditioning module also includes: The adaptive conditioning unit is used to perform proportional regulation on the high voltage signal, impedance regulation on the 1 / 4 bridge signal, and filtering and amplifying the high impedance signal based on the signal conditioning mode selected by the control unit.

5. The stacked airborne integrated signal conditioning device according to claim 4, characterized in that: The signal conditioning module comprises: The frequency detection circuit is used to detect the frequency of the input signal and select a corresponding conditioning mode according to the frequency.

6. The stacked airborne integrated signal conditioning device according to claim 4, characterized in that: The signal conditioning module comprises: The impedance matching circuit is used to perform impedance matching according to the impedance characteristics of the input signal to maintain stability during signal transmission.

7. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that: The signal isolation module comprises: Programmable isolation chip, used to dynamically adjust isolation parameters according to the type of input signal, so that the isolation effect matches the signal type.

8. The stacked airborne integrated signal conditioning device according to claim 7, characterized in that: The photoelectric isolation unit of the isolation module is used to perform photoelectric isolation on the switch signal.

9. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that: The output and interface management module includes: The interface detection unit is used to automatically detect and identify the signal type of the connected external device and adjust the output voltage according to the identification result.

10. The stacked airborne integrated signal conditioning device according to claim 9, characterized in that: The output and interface management module supports hot-swap operation of devices, maintaining continuity of signal transmission when devices are connected or disconnected.

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