A new stack type airborne integrated signal conditioning device

Abstract

This invention relates to a stacked airborne integrated signal conditioning device, belonging to the field of airborne signal processing technology. The device includes a power management module, a signal conditioning module, a signal isolation module, and an output and interface management module. The power management module obtains power from the airborne power system, monitors the input voltage, and stabilizes the output of multiple voltage channels. The signal conditioning module conditions high-voltage signals, analog signals, and switching signals based on the control unit. The signal isolation module ensures electrical isolation between different signals through opto-isolation. The output and interface management module adjusts the signal output voltage according to system requirements and identifies external devices. The modular design of this device improves the system's flexibility and compatibility, effectively utilizes limited airborne space, and ensures the stability and reliability of the signal acquisition system.

Description

Technical Field

[0001] This invention relates to an airborne integrated signal conditioning device, and more particularly to a novel stacked airborne integrated signal conditioning device. Background Technology

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

[0003] Furthermore, the limited space and power supply of airborne equipment make it difficult for traditional signal conditioning equipment to provide stable and reliable signal conditioning functions within such a confined space. At the same time, ensuring continuous and stable operation under voltage fluctuations and load changes, and providing overload protection, in the face of complex power environments, is a major challenge in the design of current airborne signal conditioning equipment. Therefore, there is an urgent need for a signal conditioning device that can efficiently condition multiple types of signals within a limited space, with a 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] This invention provides a novel stacked airborne integrated signal conditioning device to solve the problem of how to achieve efficient conditioning and isolation of multiple types of signals within the limited space of airborne equipment through modular stack design, ensure the stable operation of the signal acquisition system, and provide dynamic power management and overload protection functions.

[0005] To address the above problems, this invention provides a novel stacked airborne integrated signal conditioning device, comprising:

[0006] The power management module is used to obtain electrical energy from the airborne power system, monitor the input voltage, stabilize the output voltage of multiple channels through the voltage regulator, and dynamically adjust the output power based on the intelligent power management mechanism.

[0007] The signal conditioning module is 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.

[0008] The signal isolation module is used to electrically isolate the input signal through an opto-isolation unit;

[0009] 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 device and adjust the voltage standard of the output signal.

[0010] Furthermore, the power management module includes:

[0011] 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, it outputs a regulated signal.

[0012] Furthermore, the power management module also includes:

[0013] The overload protection circuit is used to automatically cut off the power supply when the detected current or voltage exceeds a preset threshold, and to automatically restore the power supply after the fault is cleared.

[0014] Furthermore, the signal conditioning module also includes:

[0015] The adaptive conditioning unit is used to proportionally adjust the high-voltage signal, perform impedance conditioning on the 1 / 4 bridge signal, and filter and amplify the high-impedance signal based on the signal conditioning mode selected by the control unit.

[0016] Furthermore, the signal conditioning module includes:

[0017] A frequency detection circuit is used to detect the frequency of the input signal and select the appropriate conditioning mode based on the frequency.

[0018] Furthermore, the signal conditioning module includes:

[0019] Impedance matching circuits are used to match the impedance characteristics of the input signal to maintain stability during signal transmission.

[0020] Furthermore, the signal isolation module includes:

[0021] Programmable isolation chips are used to dynamically adjust isolation parameters according to the type of input signal, so that the isolation effect matches the signal type.

[0022] Furthermore, the opto-isolation unit of the isolation module is used to opto-isolate the switching signals.

[0023] Furthermore, the output and interface management module includes:

[0024] The interface detection unit is used to automatically detect and identify the signal type of the external device connected, and adjust the output voltage according to the identification result.

[0025] Furthermore, the output and interface management module supports hot-plugging of devices, maintaining the continuity of signal transmission when devices are connected or disconnected.

[0026] The key innovations of this invention include:

[0027] (1) Modular stack design: realizes flexible combination of various signal conditioning devices, and improves the space utilization and scalability of the system.

[0028] (2) Intelligent power management mechanism: By dynamically adjusting the output power, the equipment can be made to work stably under different voltage and load conditions.

[0029] (3) Control unit: Automatically selects the appropriate signal conditioning mode to achieve efficient signal conditioning and real-time adjustment.

[0030] (4) Signal isolation and protection: Through opto-isolation, electrical isolation between different types of signals is ensured, signal interference is prevented, and system stability is improved.

[0031] The following are its main beneficial effects:

[0032] (1) This invention solves the problem of efficient conditioning and isolation of multiple signals within a limited airborne space through a modular stack design. By employing a power management module, the device can obtain power from the airborne power system, ensuring the stability of the input voltage within the range of 12V to 36V, and dynamically adjust the output power based on an intelligent power management mechanism to ensure the normal operation of the device under different load conditions. Compared with traditional fixed power management methods, this invention can better adapt to complex airborne environments and ensure the flexibility of power regulation.

[0033] (2) Through the signal conditioning module, the present invention can automatically analyze the voltage, frequency and impedance characteristics of the input signal, and select an appropriate conditioning mode based on the AI ​​control unit, such as proportional adjustment of high voltage signals and impedance conditioning of 1 / 4 bridge signals, to ensure accurate conditioning and transmission of various signals in the system. The signal isolation module realizes electrical isolation of different types of signals through opto-isolation units, prevents interference between signals, and improves the signal transmission reliability of the system.

[0034] (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-plugging of external devices, and ensure the compatibility of the device and the continuity of signal transmission under complex working conditions. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the integrated signal conditioner of a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention;

[0036] Figure 2This is a structural block diagram of a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention;

[0037] Figure 3 This is a schematic flowchart of a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of a novel stacked airborne integrated signal conditioning device provided in this embodiment of the invention;

[0039] Figure 5 A schematic diagram of a novel stacked airborne integrated signal conditioning equipment power supply module provided in this embodiment of the invention;

[0040] Figure 6 A schematic diagram of a 270V high-voltage DC regulating module for a novel stacked airborne integrated signal conditioning device provided in this embodiment of the invention;

[0041] Figure 7 A schematic diagram of a high-impedance module of a novel stacked airborne integrated signal conditioning device provided in this embodiment of the invention;

[0042] Figure 8 A schematic diagram of a switch isolation module for a novel stacked airborne integrated signal conditioning device provided in this embodiment of the invention;

[0043] Figure 9 A schematic diagram of a 1 / 4 bridge signal conditioning module of a novel stacked airborne integrated signal conditioning device provided in this embodiment of the invention;

[0044] Figure 10 This invention provides an excitation voltage output module for a novel stacked airborne integrated signal conditioning device.

[0045] Figure 11 This invention provides a schematic diagram of the switching optocoupler isolation principle of a novel stacked airborne integrated signal conditioning device.

[0046] Figure 12 The present invention provides a schematic diagram of the excitation voltage output of a novel stacked airborne integrated signal conditioning device. Detailed Implementation

[0047] This invention relates to a stacked airborne integrated signal conditioning device, belonging to the field of airborne signal processing technology. The device includes a power management module, a signal conditioning module, a signal isolation module, and an output and interface management module. The power management module obtains power from the airborne power system, monitors the input voltage, and stabilizes the output of multiple voltage channels. The signal conditioning module conditions high-voltage signals, analog signals, and switching signals based on the control unit. The signal isolation module ensures electrical isolation between different signals through opto-isolation. The output and interface management module adjusts the signal output voltage according to system requirements and identifies external devices. The modular design of this device improves the system's flexibility and compatibility, effectively utilizes limited airborne space, and ensures the stability and reliability of the signal acquisition system.

[0048] The present invention provides a novel stacked airborne integrated signal conditioning device, which is mainly used to solve the technical problem of "how to achieve efficient conditioning and isolation of multiple types of signals within a limited airborne equipment space through modular stack design, ensure the stable operation of the signal acquisition system, and provide dynamic power management and overload protection functions".

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0051] Example 1:

[0052] Figure 2 This is a structural block diagram of a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention. The structural module includes the following parts:

[0053] Power management module 10: This module obtains power from the onboard power system, monitors whether the input voltage is within the range of 12V to 36V, and stabilizes the output of multiple voltages (such as 5V, 10V, and 12V) through a voltage regulator. Based on an intelligent power management mechanism, the module adjusts the output power in real time to ensure stable operation of the equipment under different load conditions, and automatically triggers a protection mechanism when voltage or current overload is detected.

[0054] Signal conditioning module 20: This module receives various signal types (including high-voltage signals, analog signals, and switching signals) and analyzes the voltage, frequency, and impedance characteristics of the input signals through a signal detection unit. Based on the control unit's adaptive selection of a suitable signal conditioning mode (such as high-voltage signal proportional adjustment, 1 / 4 bridge signal conditioning, and high-impedance signal conditioning), the module amplifies, attenuates, and filters the signal to ensure the output signal meets system requirements.

[0055] Signal isolation and protection module 30: Based on opto-isolator units, it isolates input signals to ensure that no electrical interference or crosstalk occurs between different types of signals. This module can monitor the voltage and current of the isolated signal in real time, and activates an overload protection mechanism when the signal exceeds a set threshold. The programmable isolation chip dynamically adjusts the isolation parameters to match the input signal type and system requirements.

[0056] Output and Interface Management Module 40: Receives processed signals from the signal conditioning module, is responsible for multiple signal outputs, and monitors the voltage and current parameters of the output signals in real time. This module automatically identifies connected external devices through the interface detection unit and adjusts the output signal voltage standard to ensure device compatibility. Furthermore, it supports hot-swapping of devices to ensure the continuity and stability of signal transmission when devices are connected or disconnected.

[0057] Reference Figure 3 This is a flowchart illustrating a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention. The novel stacked airborne integrated signal conditioning device may include at least steps S100-S400:

[0058] The S100, based on input voltage detection, adjusts the output voltage in real time and dynamically manages power consumption, while also providing overload and short-circuit protection.

[0059] The S200 adaptively conditions high-voltage, 1 / 4-bridge, and high-impedance signals through the control unit, and monitors and adjusts circuit parameters in real time.

[0060] S300 uses an opto-isolation unit to isolate and monitor input signals for overload, and dynamically adjusts the isolation circuit.

[0061] The S400 monitors and outputs multiple voltage channels in real time and automatically identifies the signal requirements of external devices.

[0062] Step S100 includes steps S110-S130:

[0063] S110. Based on the input power interface, the input voltage is acquired and detected, and the voltage is adjusted by a voltage regulator to generate a regulated output signal. Specifically:

[0064] 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 of the airborne system, and the input voltage range is set to 12V to 36V. During this stage, the voltage detection unit monitors the input voltage in real time. It then compares it with a preset voltage range.

[0065] Specifically, if Condition met: 12V≤ If the voltage is ≤36V, the voltage regulator will start working, converting the input voltage into the required stable output voltage. The function of the voltage regulator is to ensure that fluctuations in the input voltage do not affect the normal operation of the system. During real-time monitoring, the voltage detection unit will collect... (t) (input voltage as a function of time) is compared with the target voltage value to ensure that voltage fluctuations are within the allowable range.

[0066] Furthermore, the output voltage value after adjustment by the voltage regulator It should be maintained at the following standards: =12V, 5V, ±12V, and the stable voltage values ​​will be provided to the subsequent signal conditioning module, isolation module, and interface management module.

[0067] S120. Obtain the power consumption data of each module, and dynamically adjust the output voltage based on predictions of future power consumption requirements. Specifically:

[0068] After voltage regulation is completed, the intelligent power management unit is activated in step S120. This unit collects power consumption data for each module in real time using the power consumption sensors of each module. (t), where i represents different modules (such as signal conditioning modules, isolation modules, etc.), and predicts future power consumption requirements based on the historical operating data and current load of each module.

[0069] The intelligent power management unit can predict future moments. power consumption The formula is as follows:

[0070]

[0071] in, This indicates the power consumption of each module at the current moment; Indicates the rate of change of power consumption; Indicates the time step of the prediction.

[0072] The predicted results will be used to dynamically adjust the power output to ensure that each module receives sufficient 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 accordingly. The power supply capacity ensures stable operation of the system under different working modes.

[0073] S130. Monitor the current change of the signal. When the current exceeds the safety threshold, trigger the overload protection mechanism, cut off the power supply, and automatically restore power supply after the fault is cleared. Specifically:

[0074] During system operation, step S130 continuously monitors the changes in current I(t) through the protection circuit, especially the current values ​​of each module. (t). If the current of a certain module exceeds the safety threshold. If the circuit fails to detect an overload or short circuit, the protection circuit will automatically cut off the power supply to prevent the system from overheating and being damaged.

[0075] Specifically, the overload conditions are: (t)> When the above conditions are met, the protection circuit immediately activates, cutting off the power supply to the module, recording the fault information at this time, and initiating the automatic recovery mechanism. The recovery mechanism will automatically restart the power supply after the overload is relieved, restoring the system to normal operating condition.

[0076] Furthermore, current detection data The (t) and short-circuit event records will be transmitted to the subsequent intelligent signal conditioning module S220 as a reference for power consumption and current anomalies. This result will affect the conditioning strategy of the intelligent signal conditioning module, ensuring that the safety of the current load is taken into account during the conditioning process.

[0077] Explanation of the connection between the preceding and following steps: The module current calculated in S130 (t) and fault record data will be transmitted as input to the S220 intelligent signal conditioning module to adjust the parameter settings of the signal conditioning circuit, ensure that the current load of the conditioning circuit meets the safety standard, and avoid signal distortion caused by overload.

[0078] Step S200 includes at least steps S210-S230:

[0079] S210. Based on the signal detection unit receiving and identifying the type of the input signal, the voltage, frequency, and impedance characteristics of the input signal are obtained. Specifically:

[0080] In step S210, the intelligent signal conditioning module first receives different types of signals from external devices, including high-voltage signals. ,analog signal and switching signals The signal enters the signal detection unit through the input terminal. The detection unit collects the basic parameters of the input signal in real time, including voltage. ,frequency and impedance .

[0081] Specifically, the voltage of the input signal It can be expressed by the following formula:

[0082] = +

[0083] frequency Based on the characteristics of the signal source, real-time measurement is performed using a frequency detection unit. Simultaneously, impedance... Identification is performed using an impedance measurement circuit, employing the following formula:

[0084]

[0085] in, The input current at the detection time.

[0086] The detection unit further determines the input current. (t) (This value comes from the current monitoring data in stage S130) The impedance is corrected to ensure that the signal conditioning parameters match the input data. The signal parameter data in this step will be passed to stage S220 as the basis data for subsequent adaptive conditioning.

[0087] S220. Based on the analysis results of the control unit, an adaptive signal conditioning mode is selected to condition the high-voltage signal, the 1 / 4 bridge signal, and the high-impedance signal. Specifically:

[0088] In step S220, the intelligent signal conditioning module uses the signal parameters obtained in S210 as a basis. , and and current data obtained from S130. The control unit is activated to perform analysis and automatically selects the appropriate signal conditioning mode.

[0089] Specifically, different conditioning methods are selected based on different signal types:

[0090] 1. High-voltage signal: For the input high-voltage signal The system uses a proportional control method to convert the input voltage into a measurable voltage through a proportional factor k. The formula is as follows:

[0091]

[0092] Where k = 36 is the high voltage regulation ratio coefficient, which ensures that the voltage range after high voltage signal conditioning meets the system requirements (0~10V).

[0093] 2. Quarter-bridge signal conditioning: For quarter-bridge signals, impedance is conditioned using an impedance matching circuit. This ensures the stability of signal transmission. The conditioned output impedance... Represented as:

[0094] = ⋅

[0095] in, These are impedance matching parameters set internally by the system to ensure signal stability.

[0096] 3. High-impedance signals: For high-impedance signals The system automatically adjusts the parameters of filters and capacitors in the circuit to reduce signal attenuation. The output voltage after high impedance conditioning is calculated using the following formula. :

[0097]

[0098] in, It is the impedance value of a high-impedance input signal.

[0099] The conditioned signal output parameters and This will be passed to the next step of S230 dynamic parameter adjustment to further ensure the accuracy and stability of the output signal.

[0100] S230. Monitor the status of the conditioning signal in real time and dynamically adjust the parameters of the circuit, such as the filter and capacitor. Specifically:

[0101] In step S230, the control unit continuously monitors the input signal. (t) and The dynamic changes of (t) are monitored, and the parameters of components such as filters and capacitors in the conditioning circuit are adjusted in real time to ensure that the signal remains stable under changing input conditions.

[0102] Specifically, the control unit calculates the rate of change of the conditioning parameters. Where X represents circuit component parameters (such as filter frequency) The capacitance value (C) is used. The conditioning circuit adjusts the capacitance value in real time according to the following formula:

[0103]

[0104] Where C(t) represents the current capacitance value; This represents the rate of change of capacitance, which is calculated by the control unit based on the rate of change of the input signal. Indicates the time step of the adjustment.

[0105] The control unit adjusts the circuit parameters to ensure that the voltage, frequency, and impedance of the output signal remain stable under different input conditions, ultimately resulting in a stable output signal. (t), (t) meets the accuracy requirements of the system.

[0106] Explanation of the connection between steps: Signal parameters acquired by S210 , and This is the basic data for S220 adaptive conditioning, and the selection of the conditioning mode depends on the characteristics of the input signal.

[0107] Current data for stage S130 The S210 stage is used for impedance measurement and correction to ensure the matching of current load and impedance during subsequent signal conditioning.

[0108] The conditioning results in S220 and The signal is transmitted to stage S230, whereby the control unit dynamically adjusts the component parameters of the conditioning circuit to ensure the accuracy of the signal output.

[0109] Step S300 includes at least steps S310-S330:

[0110] S310. The input signal is isolated by the opto-isolation unit. Specifically:

[0111] In step S310, the signal isolation module first isolates the input signal using an opto-isolation unit. This step is based on the signal type (high-voltage signal, analog signal, switch signal) obtained from the signal input detection stage in S210. The opto-isolation unit electrically isolates the input signal from subsequent circuits through optocouplers, ensuring that no interference or crosstalk occurs between different signals.

[0112] Specifically, input signal After detection, an appropriate isolation method is selected based on the signal type. For example, for switch signals... High-voltage and low-voltage signals are isolated through opto-isolation. Analog signals The transmission stability is ensured by using an analog isolation circuit. The output signal after isolation processing... Represented as:

[0113]

[0114] in, The isolation factor ensures that the signal remains at an appropriate level after isolation.

[0115] The isolation signal generated in S310 This will be passed to the subsequent S320 overload monitoring steps to monitor the signal status after isolation.

[0116] S320. Based on the signal monitoring unit, obtain the voltage, current, and frequency parameters of the isolated signal. Specifically:

[0117] In step S320, the voltage of the signal is monitored in real time. Current and frequency This ensures that the current remains within a safe range. This monitoring data is derived from the current detection results in step S130. (t), and compare it with the current signal isolation state. 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 is automatically activated.

[0118] Overload conditions are:

[0119] > >

[0120] in, and These are preset current and voltage safety thresholds. Once an overload is detected, the protection circuit immediately cuts off the signal path to prevent equipment damage due to overload short circuits. The system records the current time. The signal parameters at the time of the fault are used for subsequent analysis.

[0121] Furthermore, after the overload is relieved, the system automatically resumes signal transmission and reopens the isolated signal channel.

[0122] S330. Based on the intelligent control unit, dynamically adjust the parameters of the isolation circuit. Specifically:

[0123] In step S330, the signal isolation module dynamically adjusts the operating state of the isolation circuit based on the analysis results from the intelligent control unit. This is achieved by monitoring the voltage of the input signal. ,frequency and current Programmable isolation chips can adjust isolation parameters in real time, enabling isolation circuits to respond flexibly to changes in the type of input signal.

[0124] Understandably, the main parameters to be adjusted include the sensitivity of opto-isolation. and isolation time constant The specific calculation formula is as follows:

[0125]

[0126] By adjusting This 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.

[0127] 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.

[0128] Explanation of the connection between preceding and following steps: Isolation processing signal in stage S310 and It is the input signal for S320 overload monitoring, used to monitor the signal status after isolation in real time.

[0129] Current data for stage S130 It is used for overload monitoring in the S320 stage to ensure that the current load and isolation circuit are matched.

[0130] The isolation parameter adjustment results of the S330 stage will be transmitted to the S400 output and interface management module to ensure that the output signal remains stable after isolation.

[0131] Step S400 includes at least steps S410-S430:

[0132] S410: Receive the conditioning signal from the signal conditioning module, output multiple voltages based on system requirements, and monitor the voltage and current parameters of the signals in real time. Specifically:

[0133] In step S410, the output and interface management module receives the conditioned signal from stage S220 (adaptive signal conditioning). and It outputs multiple voltages according to system requirements. When the signal passes through the output circuit, it will automatically select the appropriate voltage standard, such as 10V, 5V, or 12V, based on the different external device requirements.

[0134] Specifically, the voltage of the output signal and current It will monitor in real time and adjust according to equipment standards. The output circuit will dynamically adjust the output voltage. To ensure that the voltage remains stable under different load conditions:

[0135]

[0136] in, Indicates the set target output voltage; This represents the rate of voltage change, determined by load variations. This indicates the adjustment time interval.

[0137] The output circuit continuously adjusts according to changes in the input signal and the specific requirements of external devices. and This ensures the signal output meets equipment requirements. The adjusted output signal is then transmitted to external devices, and voltage and current changes are monitored in real time to ensure stable signal output.

[0138] S420. Through the interface identification module, the system automatically detects connected external devices, identifies the signal type and voltage requirements of the devices, and automatically adjusts the output signal parameters. Specifically:

[0139] In step S420, the interface management module begins operation, automatically detecting and identifying the type of the connected external device through the interface identification unit, and reading its signal standard and voltage requirements. Specifically, the system will determine the type of device based on the output signal from the previous step S410. and It also automatically adjusts the voltage and parameters of the output signal in conjunction with the device's interface protocol to ensure compatibility with external devices.

[0140] For example, if the connected device is detected to require a 5V signal, the interface auto-identification module will automatically adjust the output voltage using the following algorithm:

[0141]

[0142] in, This indicates the voltage value that needs to be adjusted; This is the current output voltage; This provides the voltage required by external devices.

[0143] The interface management module will, according to Adjust the voltage and current of the output signal to ensure it matches the input requirements of external devices, and monitor changes in the output signal parameters in real time.

[0144] S430: Monitor the connection / disconnection status of external devices and dynamically adjust the signal output. Specifically:

[0145] In step S430, the interface management module monitors the connection / disconnection status of external devices in real time through the detection unit. The system can understand this through interface current. and voltage It uses changes in the device's connection to identify disconnections and supports hot-swapping operations.

[0146] Specifically, the system will identify changes in device status based on the following conditions:

[0147] > >

[0148] in, and These are the current and voltage thresholds when the device is connected.

[0149] When a device is connected, the system automatically adjusts the output signal parameters to ensure the continuity and stability of the signal connection. The output circuit automatically configures the corresponding signal standard when the device is connected and immediately stops signal transmission when the device is disconnected to avoid system interruption and instability caused by device disconnection.

[0150] Explanation of the connection between preceding and following steps: Output signals in S410 and The signal conditioning results from the S220 ensure that the output signal matches the requirements of external devices.

[0151] Device parameters identified in S420 and It will provide feedback to the S410 step, which is used to dynamically adjust the output signal to ensure stable signal transmission.

[0152] The S430 identifies the device connection status by monitoring current and voltage, and combines this with the interface identification information of the S420 to ensure the safe and reliable signal transmission of external devices.

[0153] Example 2:

[0154] Figure 1 This is a schematic diagram of a novel stacked airborne integrated signal conditioning device provided in an embodiment of the present invention. The device's structural distribution is as follows: Figure 4 As shown, the panel contains six modules. The first module is the device power supply module, and the others, in order, are a 270V high-voltage DC regulation module, a high-impedance module, a switch isolation module, a 1 / 4-bridge signal conditioning module, and a DC voltage output module. The power supply module is as follows: Figure 5As shown, the main function is to provide independent regulated DC power to each module of the equipment. Power is supplied between boards using board connectors. Each power module includes one onboard power input port, one LED indicator, and one grounding post. The power supply voltage supports a wide range of 12~36V. The indicator light is green, indicating that the power supply module is working properly. The power module includes a 3A filter (TF-TRD3AT2), one 12V DC-DC module (TDPCGV28S12W5T), one ±12V DC-DC module (TDPCGV28D12W5T), and one 5V DC-DC module (TDPCGV28S5W5T). A 270V high-voltage DC regulation module is also included. Figure 6 As shown, the main function is to linearly adjust the onboard 0~360V high-voltage signal at a 1 / 36 ratio to a 0~10V signal that can be acquired by the data acquisition device for output. The module includes two inputs and two outputs. Figure 7 The interface on the left in the diagram is the high-voltage input signal interface, and the interface on the right is the conditioned 0~10V signal output interface. High-impedance modules are shown below. Figure 5 As shown, the main feature is to achieve high impedance in the input and output paths. When the device is powered on, the input and output terminals are in a conductive state; when the device is powered off, the input and output terminals exhibit a high impedance state. The module includes four inputs and four outputs. The switch isolation module is as follows... Figure 8 As shown, this module primarily implements signal isolation for three types of switch signals: 28V / ground, 28V / on, and on / ground. The input signals for 28V / ground, 28V / on, and on / ground correspond to independently isolated 5V / 0V output signals, using opto-isolation. A single module contains a total of 32 channels, with 20 channels supporting opto-isolation for both 28V / ground and 28V / on signals, and 12 channels supporting opto-isolation for all three signals. The panel is equipped with DIP switches, a 37-pin signal input interface, and a 37-hole signal output interface. When the DIP switches are in the off position, opto-isolation of 28V / ground and 28V / on signals is achieved; when the DIP switches are in the ON position, opto-isolation of on / ground signals is achieved. A 1 / 4-bridge signal conditioning module is also included. Figure 9 As shown, this module primarily eliminates impedance interference caused by long-distance sensor installation. It includes 12 channels of 1 / 4-bridge signal conditioning. The front panel features a 37-pin input interface and a 51-pin output interface. The DC voltage output module is shown below. Figure 10 As shown, this module is primarily responsible for providing excitation voltage to the sensor. It includes ten 10V outputs, four 5V outputs, and two 12V outputs. The panel is equipped with a 51-pin excitation voltage output interface. The schematic diagram for the isolation of the switching signals is shown below. Figure 11As shown, optocouplers are mainly used for front-to-back stage isolation. When the input signal is 28V / ground / 28V / open circuit, the output voltage is 5V / 0V. When the input signal is open / ground, pressing the DIP switch to ON connects 12V to the input terminal. When the input signal is open circuit, the output is 5V high level; when the input signal is ground, the output is 0V low level. The required 12V and 5V voltages are provided by the power supply module through board connectors. The excitation voltage output module includes 10 channels of 10V excitation voltage output, 4 channels of 5V excitation voltage output, and 2 channels of 12V excitation voltage output. The schematic diagram of the 10V / 5V excitation voltage output is shown below. Figure 12 As shown, a 10V reference voltage chip outputs a reference voltage to a voltage follower consisting of 10 operational amplifiers, generating 10 10V drive voltage outputs. A 5V reference voltage chip outputs a reference voltage to a voltage follower consisting of 4 operational amplifiers, generating 4 5V drive voltage outputs. The 12V voltage required by the operational amplifiers and reference voltage chip is generated by a ±12V DC-DC power supply of model TDPCGV28D12W5T, which also supplies 2 of the 12V drive voltage outputs.

[0155] The key innovations of this invention include:

[0156] (1) Modular stack design: realizes flexible combination of various signal conditioning devices, and improves the space utilization and scalability of the system.

[0157] (2) Intelligent power management mechanism: By dynamically adjusting the output power, the equipment can be made to work stably under different voltage and load conditions.

[0158] (3) Control unit: Automatically selects the appropriate signal conditioning mode to achieve efficient signal conditioning and real-time adjustment.

[0159] (4) Signal isolation and protection: Through opto-isolation, electrical isolation between different types of signals is ensured, signal interference is prevented, and system stability is improved.

[0160] The following are its main beneficial effects:

[0161] (1) This invention solves the problem of efficient conditioning and isolation of multiple signals within a limited airborne space through a modular stack design. By employing a power management module, the device can obtain power from the airborne power system, ensuring the stability of the input voltage within the range of 12V to 36V, and dynamically adjust the output power based on an intelligent power management mechanism to ensure the normal operation of the device under different load conditions. Compared with traditional fixed power management methods, this invention can better adapt to complex airborne environments and ensure the flexibility of power regulation.

[0162] (2) Through the signal conditioning module, the present invention can automatically analyze the voltage, frequency and impedance characteristics of the input signal, and select an appropriate conditioning mode based on the AI ​​control unit, such as proportional adjustment of high voltage signals and impedance conditioning of 1 / 4 bridge signals, to ensure accurate conditioning and transmission of various signals in the system. The signal isolation module realizes electrical isolation of different types of signals through opto-isolation units, prevents interference between signals, and improves the signal transmission reliability of the system.

[0163] (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-plugging of external devices, and ensure the compatibility of the device and the continuity of signal transmission under complex working conditions.

[0164] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations and substitutions within the technical scope disclosed in this application, and all such variations should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A stacked airborne integrated signal conditioning device, characterized in that, include: The intelligent power supply and management module is used to obtain input voltage from the main power supply of the airborne system. ; A voltage regulator is used to monitor the input voltage in real time by the voltage detection unit. If the input voltage is within the set range, Convert to output voltage ; Intelligent power management unit for predicting power consumption formulas Predicting future moments power consumption And according to the power consumption Dynamically adjust the power supply output power; among which, This indicates the power consumption of each module at the current moment; Indicates the power consumption The rate of change; Indicates the time step of the forecast; The intelligent signal conditioning module is used to receive input signals, including high-voltage signals. ,analog signal and switching signals ; The detection unit is used to acquire basic parameters of the input signal in real time, including voltage. ,frequency and impedance ; The intelligent signal conditioning module is also used for conditioning the input high-voltage signal. It adopts a proportional control method, converting the voltage into a measurable voltage through a proportional factor k. The voltage The expression is: For 1 / 4 bridge signals, impedance is conditioned using an impedance matching circuit. The conditioned output impedance is obtained. The output impedance The expression is: = ⋅ , This represents the impedance matching parameter; for high impedance signals... It automatically adjusts the parameters of filters and capacitors in the circuit and calculates the output voltage after high impedance conditioning. The output voltage The expression is: , Indicates the high impedance signal The impedance value; A signal isolation module is used to isolate the input signal through an opto-isolation unit; based on the voltage of the input signal... ,frequency and current Adjust the isolation parameters, including the sensitivity of opto-isolation. and isolation time constant The isolation time constant The calculation formula is: ; The output and interface management module is used to monitor the connection / disconnection status of external devices in real time through the detection unit, and to identify the status changes of the external devices based on the following conditions: > > , Indicates the interface current. This indicates the current threshold when the external device is connected; Indicates the interface voltage. This indicates the voltage threshold when the external device is connected; When the external device is connected, the output signal parameters are automatically adjusted, and the corresponding signal standard is automatically configured through the output circuit; when the external device is disconnected, signal transmission is immediately stopped.

2. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, The power management module includes: A 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 set range of [12V, 36V], a regulated signal is output.

3. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, Also includes: Protection circuit; The protection circuit is used to continuously monitor the current value of each module. (t), if the current value (t) Exceeds the safety threshold If the fault is detected, it is determined to be an overload or short circuit, and the power supply will be automatically cut off; the power supply will be automatically restored after the fault is cleared.

4. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, The voltage The expression is: = + .

5. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, Also includes: Frequency detection unit; The frequency detection unit is used to measure the frequency in real time. .

6. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, Also includes: Impedance measurement circuit; The impedance measurement circuit is used to identify the impedance. The impedance The expression is: , This indicates the input current at the moment of detection.

7. The stacked airborne integrated signal conditioning device according to claim 1, characterized in that, The signal isolation module includes: Programmable isolation chips are 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 opto-isolation unit of the isolation module is used to opto-isolate switching signals.

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 external device connected, 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-plugging of devices, maintaining the continuity of signal transmission when devices are connected or disconnected.

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