Miniaturized temperature measurement recorder

Abstract

The utility model belongs to the technical field of electronics, and particularly relates to a miniaturized temperature measuring recorder. The recorder comprises a battery power supply module, a switch control module, a temperature acquisition module and a data management and storage module which are connected through system cables. The battery power supply module is connected with the switch control module through a power supply cable, the temperature acquisition module is connected with the data management and storage module through an acquisition cable, and the switch control module is connected with the data management module through a maintenance cable. The device has the characteristics of small size, light weight and the same shape as an aircraft, can realize high-precision real-time temperature acquisition through self power supply input, and has high crash data survival capability.

Description

Technical Field

[0001] This utility model belongs to the field of electronic technology, and in particular relates to a miniaturized temperature recorder. Background Technology

[0002] Because aircraft face varying thermal environments during flight, real-time temperature measurements of the aircraft's surfaces and internal equipment are necessary to ensure normal operation under these conditions. This data is crucial for designing and improving materials, structures, and thermal protection to account for chemical changes and thermal deformations at high altitudes and temperatures. However, the immense impact forces experienced during launch and landing place high demands on the crashworthiness of temperature measurement equipment. Furthermore, aircraft are often composed of multiple modules, each housing different equipment, creating a need for temperature measurement across different modules. Given the aircraft's considerable length and the numerous connecting cables and internal components, the weight, size, and cable length of the temperature measurement equipment also require careful consideration. Utility Model Content

[0003] To address the problems in the background technology, this utility model provides a miniaturized temperature recorder, which is designed to be miniaturized, has a fast response speed to temperature changes, high acquisition accuracy, and also has the ability to survive crashes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A miniaturized temperature recorder includes: a battery power supply module, a switch control module, a temperature acquisition module, and a data management and storage module, with each module connected by a system cable.

[0006] The battery-powered module is connected to the switch control module via a power supply cable, the temperature acquisition module is connected to the data management and storage module via an acquisition cable, and the switch control module is connected to the data management module via a maintenance cable.

[0007] Furthermore,

[0008] The battery power module includes a battery and battery thermal insulation protection components, and is used to provide external power input to the entire temperature recorder.

[0009] The switch control module includes a battery control switch, status indicator lights, and a mounting bracket, which are used for battery power supply control and to indicate the power-on and fault information of the current temperature recorder.

[0010] The temperature acquisition module includes a temperature sensor assembly and a temperature measurement cable, used to collect the temperature of the inner wall surface of the recorder carrier and the real-time temperature of the equipment inside the cabin during flight.

[0011] The data management and storage module includes a data management module, a storage module, and a housing fixture, and is used to realize the system self-test of the temperature recorder, the acquisition of temperature data, and the storage and download of data.

[0012] Furthermore,

[0013] The data management and storage module consists of a minimum system plus peripheral circuitry.

[0014] The RS422 signal transceiver circuit is responsible for receiving and sending RS422 signals to external devices; the resistance signal acquisition and conditioning circuit modulates the acquired resistance signal into a voltage signal, and the AD acquisition circuit performs analog-to-digital conversion; the USB 2.0 driver circuit is responsible for communication with the ground download device to download data; the power voting circuit realizes power voting when powered by battery and USB interface, and the power after voting is supplied to the secondary power source through the power conversion circuit; the status light driver circuit is controlled by the processor's I / O port to control the on / off state lights; the RS232 serial port debugging circuit monitors the processor's status in real time.

[0015] Furthermore,

[0016] The switch control module includes two connectors, XP1 and XP2. Connector XP1 connects to the battery power supply module, and connector XP2 connects to the data management and storage module. The toggle switch K1 is connected to the positive terminal of the battery and is responsible for switching the power on and off. The dual-color indicator light V1 indicates the current status of the temperature recorder. A green light indicates normal operation, while a red light indicates a fault. The USB connector N1 enables communication between the temperature recorder and the computer, allowing the download of stored data.

[0017] Furthermore,

[0018] The temperature acquisition module includes connector XP3, temperature sensing components, and acquisition cables; each temperature sensing component contains two temperature sensors, and the reliability of temperature data acquisition is ensured by using a master-backup temperature sensing method at the same temperature sensing point; each temperature sensing point is connected to connector XP3 via a four-wire connection.

[0019] Furthermore,

[0020] The battery power supply module includes a battery pack, battery insulation material, and connector XP4. The battery pack is a high-capacity battery that stably provides long-term power input to the data management and storage module. The positive and negative terminals of the battery pack are connected to connector XP4. When the battery pack is low on power, the battery power supply module can be replaced simply by plugging and unplugging connector XP4. The battery pack is protected from heat by insulation material.

[0021] This invention provides a miniaturized aircraft-borne temperature recorder, characterized by its small size, light weight, and shape-fitting design. It can achieve high-precision real-time temperature acquisition through its own power input and possesses high crash data survival capability. It can be used to collect changes in the internal wall temperature of various aircraft sections and the ambient temperature inside equipment compartments during flight, providing a basis for improving the structural thermal protection design of the aircraft and clarifying the environmental temperature requirements of the equipment inside the compartments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the temperature recorder of this utility model.

[0023] Figure 2 This is a block diagram illustrating the principle of the data management and storage module of the temperature measurement recorder of this utility model.

[0024] Figure 3 This is a block diagram illustrating the switching control module principle of the temperature recorder of this utility model.

[0025] Figure 4 This is a block diagram illustrating the principle of the temperature acquisition module in the temperature recorder of this utility model.

[0026] Figure 5 This is a schematic diagram of the battery power supply module of the temperature measurement recorder of this utility model. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] This embodiment of the invention adopts a modular design concept, dividing the overall system into four independent functional modules: a battery power supply module, a switch control module, a temperature acquisition module, and a data management and storage module. These modules are connected via system cables. The battery power supply module includes a battery and battery thermal insulation protection components, providing external power input to the entire temperature recorder. The switch control module includes a battery control switch, status indicator lights, and a mounting bracket, used for battery power supply control and indicating the current power-on and fault information of the temperature recorder. The temperature acquisition module includes a temperature sensor assembly and temperature measurement cables, used to collect the real-time temperature of the aircraft's internal walls and cabin equipment during flight. The data management and storage module includes a data management module, a storage module, and a housing fixing component, used to realize the core functions of the temperature recorder, such as system self-testing, temperature data acquisition, and data storage and downloading.

[0029] See Figure 1 :

[0030] This utility model relates to a miniaturized aircraft-borne temperature data recorder, mainly composed of a battery power supply module, a switch control module, a temperature acquisition module, and a data management and storage module. The battery power supply module is connected to the switch control module via a power supply cable, the temperature acquisition module is connected to the data management and storage module via an acquisition cable, and the switch control module is connected to the data management module via a maintenance cable. During operation, the battery power supply module supplies power to the data management and storage module by toggling a toggle switch in the switch control module. After the data management and storage module completes its system self-test upon power-up, it sends a status indicator signal to the switch control module and initiates the temperature data acquisition task. Simultaneously, it transfers the acquired temperature data to the storage module within the survivability protection component via an internal bus, completing the temperature data storage task.

[0031] During temperature data acquisition, communication with the aircraft's control system can be achieved via the RS422 interface, providing real-time feedback of the temperature recorder's status information to the aircraft. After the temperature acquisition task is completed, the battery switch can be disconnected, and a +5V DC power input can be provided to the temperature recorder via the data download computer's USB interface to download and process the stored temperature data.

[0032] See Figure 2 :

[0033] The data management and storage module consists of a minimum system plus peripheral circuitry. The RS422 signal transceiver circuit is responsible for receiving and sending RS422 signals to external devices; the resistance signal acquisition and conditioning circuit conditions the acquired resistance signal into a voltage signal, which is then converted to digital by the AD acquisition circuit; the USB 2.0 driver circuit is responsible for communication with the ground download device to download data; the power voting circuit can vote on whether the device is powered by battery or USB interface, and the voted power supply is then supplied as secondary power through a power conversion circuit; the status light driver circuit is controlled by the processor's I / O ports to control the on / off state lights; and the RS232 serial port debugging circuit can monitor the processor's status in real time.

[0034] See Figure 3 :

[0035] The switch control module includes two connectors, XP1 and XP2. XP1 connects to the battery power supply module, and XP2 connects to the data management and storage module. The toggle switch K1 is connected to the positive terminal of the battery and controls the power supply. The dual-color indicator light V1 indicates the current status of the temperature recorder; a green light indicates normal operation, while a red light indicates a fault. The USB connector N1 enables communication between the temperature recorder and the computer, facilitating the download of stored data.

[0036] See Figure 4 :

[0037] The temperature acquisition module includes connector XP3, temperature sensing components, and acquisition cables. Each temperature sensing component contains two temperature sensors, enabling reliable temperature data acquisition at the same measurement point through a master-slave configuration. Each measurement point is connected to connector XP3 via a four-wire connection, minimizing acquisition errors caused by cable length and improving the accuracy of temperature data acquisition.

[0038] See Figure 5 :

[0039] The battery power supply module includes a battery pack, battery insulation material, and connector XP4. The battery pack is a high-capacity battery that can stably provide power input to the data management and storage module for extended periods. The positive and negative terminals of the battery pack are connected to connector XP4. When the battery pack's power is low, the battery power supply module can be replaced simply by plugging and unplugging connector XP4. Furthermore, because the aircraft generates a significant amount of heat due to friction with the air during high-speed flight, the battery pack is insulated with insulation material to ensure normal power supply to the temperature recorder.

[0040] The power input voting circuit is used to vote on the power input of the temperature recorder. When the battery and USB are powered separately, the LTC4411ES5 chip ensures that the output power enters the temperature recorder normally. When the battery switch is on and the USB is connected, the pull-down action of the transistor controls the enable of the LTC4411ES5 chip, turning off battery power. Therefore, when both are powered simultaneously, this circuit ensures that the external USB power is used preferentially, saving battery power and reducing the frequency of battery replacements.

[0041] The resistance signal acquisition and conditioning circuit converts the resistance signal acquired by the temperature acquisition module into a voltage signal. By providing an excitation input to the PT1000 temperature sensor resistor in the temperature acquisition module via a +5V power supply, the voltage across its terminals can be obtained. Simultaneously, the voltage of a high-precision reference resistor in the same circuit is acquired. Through ground-based processing, the current temperature data can be obtained. The AD device connected to the back end of the resistance signal acquisition and conditioning circuit has a high-impedance input interface, which avoids acquisition errors caused by current shunting and ensures the accuracy of temperature acquisition.

[0042] The status light driver circuit is used to control the different colors of the dual-color status lights in the switch control module. The base of the transistor in this circuit is connected to the processor's I / O port; by controlling the high and low levels of the I / O port through software, the transistor can be turned on and off. Simultaneously, because the collector has a current amplification effect, the brightness of the status indicator light can be increased.

[0043] This utility model provides a miniaturized aircraft-borne temperature recorder, characterized by its small size, light weight, and shape-fitting design. It can achieve high-precision real-time temperature acquisition through its own power input and possesses high crash data survival capability. It can be used to collect changes in the internal wall temperature of various aircraft sections and the ambient temperature inside equipment compartments during flight, providing a basis for improving the structural thermal protection design of the aircraft and clarifying the ambient temperature requirements of equipment inside the compartments.

Claims

1. A miniaturized temperature recorder, characterized in that, The recorder includes: a battery power supply module, a switch control module, a temperature acquisition module, and a data management and storage module, and the modules are connected to each other via system cables; The battery-powered module is connected to the switch control module via a power supply cable, the temperature acquisition module is connected to the data management and storage module via an acquisition cable, and the switch control module is connected to the data management module via a maintenance cable.

2. The miniaturized temperature recorder according to claim 1, characterized in that, The battery power module includes a battery and battery thermal insulation protection components, and is used to provide external power input to the entire temperature recorder. The switch control module includes a battery control switch, status indicator lights, and a mounting bracket, which are used for battery power supply control and to indicate the power-on and fault information of the current temperature recorder. The temperature acquisition module includes a temperature sensor assembly and a temperature measurement cable, used to collect the temperature of the inner wall surface of the recorder carrier and the real-time temperature of the equipment inside the cabin during flight. The data management and storage module includes a data management module, a storage module, and a housing fixture, and is used to realize the system self-test of the temperature recorder, the acquisition of temperature data, and the storage and download of data.

3. A miniaturized temperature recorder according to claim 2, characterized in that, The data management and storage module consists of a minimum system plus peripheral circuitry. The RS422 signal transceiver circuit is responsible for receiving and sending RS422 signals to external devices; the resistance signal acquisition and conditioning circuit modulates the acquired resistance signal into a voltage signal, and the AD acquisition circuit performs analog-to-digital conversion; the USB 2.0 driver circuit is responsible for communication with the ground download device to download data; the power voting circuit realizes power voting when powered by battery and USB interface, and the power after voting is supplied to the secondary power source through the power conversion circuit; the status light driver circuit is controlled by the processor's I / O port to control the on / off state lights; the RS232 serial port debugging circuit monitors the processor's status in real time.

4. A miniaturized temperature recorder according to claim 2, characterized in that, The switch control module includes two connectors, XP1 and XP2. Connector XP1 connects to the battery power supply module, and connector XP2 connects to the data management and storage module. The toggle switch K1 is connected to the positive terminal of the battery and is responsible for switching the power on and off. The dual-color indicator light V1 indicates the current status of the temperature recorder. A green light indicates normal operation, while a red light indicates a fault. The USB connector N1 enables communication between the temperature recorder and the computer, allowing the download of stored data.

5. A miniaturized temperature recorder according to claim 2, characterized in that, The temperature acquisition module includes connector XP3, temperature sensing components, and acquisition cables; each temperature sensing component contains two temperature sensors, and the reliability of temperature data acquisition is ensured by using a master-backup temperature sensing method at the same temperature sensing point; each temperature sensing point is connected to connector XP3 via a four-wire connection.

6. A miniaturized temperature recorder according to claim 2, characterized in that, The battery power supply module includes a battery pack, battery insulation material, and connector XP4. The battery pack is a high-capacity battery that stably provides long-term power input to the data management and storage module. The positive and negative terminals of the battery pack are connected to connector XP4. When the battery pack is low on power, the battery power supply module can be replaced simply by plugging and unplugging connector XP4. The battery pack is protected by insulation material.

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