An umbrella opening controller with graphene heating function

Abstract

The utility model discloses an open umbrella controller with graphene heating function, include: controller casing, control circuit board is set up in the inboard of controller casing, is provided with signal control circuit on it, wherein, the inboard wall of controller casing is pasted with graphene flexible electrothermal film, and graphene flexible electrothermal film is electrically connected in signal control circuit. The utility model discloses an open umbrella controller with graphene heating function, through the graphene flexible electrothermal film that has added in the controller casing, and it is connected with signal control circuit, and graphene flexible electrothermal film can heat the inside of open umbrella controller, effectively promotes internal environment temperature, prevents electronic component and declines because of low temperature, ensures that open umbrella controller still can reliably run under low temperature environment, satisfies the high demand of aerospace field to open umbrella controller, provides powerful guarantee for the safe operation of aircraft in extreme environment.

Description

Technical Field

[0001] This utility model belongs to the technical field of umbrella opening controllers, specifically relating to an umbrella opening controller with graphene heating function. Background Technology

[0002] Parachute deployers, as a critical electronic control device, are widely used in the aerospace field. They are used to precisely control various systems of an aircraft, such as engine ignition, flight attitude adjustment, and the activation and deactivation of onboard equipment. These systems have extremely high requirements for the accuracy and reliability of timing control to ensure the smooth execution of flight missions and the safe operation of the aircraft.

[0003] However, in aerospace missions, aircraft may face extreme low-temperature environments, such as high-altitude flights. Under such conditions, the performance of the electronic components inside the parachute deployment controller degrades significantly. For example, the parameters of components such as resistors and capacitors on the circuit board may change, leading to signal transmission delays or distortions; the carrier mobility of semiconductor devices decreases, affecting their switching speed and conduction performance. These problems can cause the parachute deployment controller to malfunction, or even trigger system failures, posing a serious threat to flight safety. Utility Model Content

[0004] The main purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide an umbrella opening controller with graphene heating function, which aims to solve the problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides an umbrella opening controller with graphene heating function, including: a controller housing; a control circuit board disposed on the inner side of the controller housing, on which a signal control circuit is disposed; wherein, a graphene flexible electrothermal film is attached to the inner wall of the controller housing, and the graphene flexible electrothermal film is electrically connected to the signal control circuit.

[0007] Furthermore, the signal control circuit includes a temperature detection unit and a comparison unit. The temperature detection unit is used to detect the current ambient temperature. The comparison unit is used to compare the current ambient temperature with a preset heating temperature. When the comparison unit determines that the current ambient temperature is lower than the preset heating temperature, it supplies power to the graphene flexible electrothermal film to heat it.

[0008] Furthermore, the temperature detection unit includes a first resistor and a second resistor; the comparison unit includes a third resistor, a fourth resistor, and a comparator; one end of the first resistor is connected to a first power supply port, one end of the second resistor is grounded, and the other ends of the first resistor and the second resistor are connected together to the positive input pin of the comparator; one end of the third resistor is connected to the first power supply port, one end of the fourth resistor is grounded, and the other ends of the third resistor and the fourth resistor are connected together to the negative input pin of the comparator; wherein, the second resistor is a thermistor.

[0009] Furthermore, the preset heating temperature is -25°C.

[0010] Furthermore, the first resistor has the same resistance value as the third resistor, and the fourth resistor has the same resistance value as the second resistor at the preset heating temperature.

[0011] Furthermore, the comparison unit further includes: a first capacitor, a second capacitor, a fifth resistor, a sixth resistor, a seventh resistor, an N-MOS transistor, and a P-MOS transistor; the positive power supply pin of the comparator is connected to the first power supply port; one end of the first capacitor and one end of the second capacitor are both connected to the positive power supply pin of the comparator, and the other ends of the first capacitor and the other ends of the second capacitor are both grounded; the negative power supply pin of the comparator is grounded; one end of the fifth resistor is connected to one end of the first capacitor, and the other end of the fifth resistor is connected to the output pin of the comparator; the output pin of the comparator is also connected to one end of the sixth resistor, and the other end of the sixth resistor is connected to the gate of the N-MOS transistor, the source of the N-MOS transistor is grounded; one end of the seventh resistor and the gate of the P-MOS transistor are both connected to the drain of the N-MOS transistor, and the other end of the seventh resistor and the drain of the P-MOS transistor are both connected to the second power supply port; the source of the P-MOS transistor is connected to the graphene flexible electrothermal film.

[0012] Furthermore, the comparison unit also includes an eighth resistor, one end of which is connected to the other end of the sixth resistor, and the other end of the eighth resistor is grounded together with the source of the N-MOS transistor.

[0013] Furthermore, the output voltage of the first power port is 3.3V, and the output voltage of the second power port is 5V.

[0014] Furthermore, the control circuit board is also provided with a signal indicator light electrically connected to the signal control circuit. The controller housing is made of transparent material. The graphene flexible electrothermal film is provided with an air-avoidance area. The air-avoidance area corresponds to the projection of the signal indicator light toward the controller housing, and the air-avoidance area is greater than or equal to the projection range of the signal indicator light toward the controller housing.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: The parachute controller with graphene heating function of this utility model adds a graphene flexible electric heating film inside the controller housing and connects it to the signal control circuit. The graphene flexible electric heating film can heat the inside of the parachute controller, effectively increasing the internal ambient temperature, preventing the performance of electronic components from degrading due to low temperature, and ensuring that the parachute controller can still operate stably and reliably in low temperature environment. This meets the high requirements of the aerospace field for parachute controllers and provides a strong guarantee for the safe operation of aircraft in extreme environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the first part of the signal control circuit of the umbrella opening controller with graphene heating function according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the second part of the signal control circuit of the umbrella opening controller with graphene heating function according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the external structure of the umbrella opening controller with graphene heating function according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Controller housing; 20. Signal indicator light; 30. Clearance area. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Please see Figures 1 to 3 This utility model provides an umbrella opening controller with graphene heating function, including: a controller housing 10; a control circuit board, which is disposed on the inner side of the controller housing 10 and has a signal control circuit thereon; wherein, a graphene flexible electric heating film is attached to the inner wall of the controller housing 10 and the graphene flexible electric heating film is electrically connected to the signal control circuit.

[0030] In this application, a graphene flexible electrothermal film is attached to the inside of the controller housing 10. The signal control circuit can supply power to the graphene flexible electrothermal film, enabling the graphene flexible electrothermal film to heat the inside of the umbrella controller in a low-temperature environment, thereby increasing the internal ambient temperature and ensuring that the control circuit board and the electronic components installed on it can work within a suitable temperature range.

[0031] Understandably, graphene flexible electrothermal films utilize the high electrical and thermal conductivity of graphene to achieve efficient heating. The two-dimensional structure of graphene gives it an extremely high specific surface area and excellent electrothermal conversion efficiency. When current passes through the graphene layer, electrical energy is rapidly converted into heat energy, generating a uniform heat distribution. This efficient electrothermal conversion characteristic enables graphene flexible electrothermal films to heat up quickly in a short time while maintaining good thermal stability.

[0032] Specifically, the control circuit board is equipped with a signal indicator light 20 electrically connected to the signal control circuit. The controller housing 10 is made of transparent material, and the graphene flexible electric heating film has a clearance area 30. The clearance area 30 corresponds to the projection of the signal indicator light 20 onto the controller housing 10, and the clearance area 30 is greater than or equal to the projection range of the signal indicator light 20 onto the controller housing 10. Thus, the transparent controller housing 10 and the clearance area 30 of the graphene flexible electric heating film ensure that the light from the signal indicator light 20 can be clearly transmitted to the outside, enhancing the observability of the equipment. Operators can intuitively understand the working status of the graphene-heated umbrella controller through the signal indicator light 20 without disassembling the umbrella controller with graphene heating function or using special monitoring tools, improving the maintainability and ease of use of the equipment.

[0033] Furthermore, the signal control circuit includes a temperature detection unit and a comparison unit. The temperature detection unit is used to detect the current ambient temperature; the comparison unit is used to compare the current ambient temperature with the preset heating temperature. When the comparison unit determines that the current ambient temperature is lower than the preset heating temperature, it supplies power to the graphene flexible electric heating film to heat it.

[0034] Understandably, the temperature detection unit monitors the ambient temperature inside the umbrella controller with graphene heating function in real time and converts the temperature signal into an electrical signal. The comparison unit compares the current ambient temperature with the preset heating temperature. If the current ambient temperature is lower than the preset heating temperature, the comparison unit outputs a control signal, triggering the signal control circuit to supply power to the graphene flexible electric heating film. The graphene flexible electric heating film then begins to heat up, raising the internal ambient temperature. As the internal ambient temperature rises, when the temperature reaches or exceeds the preset heating temperature, the comparison unit stops outputting the control signal, and the signal control circuit cuts off the power supply to the graphene flexible electric heating film, maintaining the internal temperature within a suitable range.

[0035] Optionally, the preset heating temperature is -25℃. The comparison unit then compares the current ambient temperature with the preset heating temperature. If the current ambient temperature is below -25℃, the comparison unit outputs a control signal, triggering the signal control circuit to supply power to the graphene flexible electric heating film and begin heating. When the temperature reaches or exceeds -25℃, the comparison unit stops outputting the control signal, cutting off the power supply to the graphene flexible electric heating film and maintaining the internal temperature within a suitable range.

[0036] Specifically, the temperature detection unit includes a first resistor R1 and a second resistor R2; the comparison unit includes a third resistor R3, a fourth resistor R4, and a comparator U1; one end of the first resistor R1 is connected to the first power supply port VDD1, one end of the second resistor R2 is grounded, and the other ends of the first resistor R1 and the other ends of the second resistor R2 are connected to the positive input pin of the comparator U1; one end of the third resistor R3 is connected to the first power supply port VDD1, one end of the fourth resistor R4 is grounded, and the other ends of the third resistor R3 and the other ends of the fourth resistor R4 are connected to the negative input pin of the comparator U1; wherein, the second resistor R2 is a thermistor. Preferably, the comparator U1 is an LMV331TP-TR.

[0037] In this embodiment, the first resistor R1 and the second resistor R2 form a voltage divider circuit, converting temperature changes into voltage changes. The resistance of the second resistor R2, acting as a thermistor, changes with temperature, thereby altering the voltage division ratio and ensuring that the voltage at the positive input pin of comparator U1 reflects the current ambient temperature. The third resistor R3 and the fourth resistor R4 form another voltage divider circuit, providing a reference voltage for comparator U1. By selecting an appropriate value for the fourth resistor R4, the reference voltage corresponding to the preset heating temperature can be set. Specifically, the resistance of the second resistor R2 increases as the temperature decreases. When the ambient temperature decreases, the increased resistance of the second resistor R2 causes a change in the voltage division ratio of the temperature detection unit, resulting in an increase in the voltage at the positive input pin of comparator U1. Comparator U1 compares the voltage states of its positive and negative input pins in real time. If the voltage at the positive input pin is higher than the voltage at the negative input pin, it indicates that the current ambient temperature is lower than the preset heating temperature, and comparator U1 outputs a high level, triggering the heating function. If the voltage at the positive input pin is lower than the voltage at the negative input pin, it indicates that the current ambient temperature is higher than the preset heating temperature, and comparator U1 outputs a low level, stopping the heating function.

[0038] Furthermore, the first resistor R1 and the third resistor R3 have the same resistance value, and the fourth resistor R4 has the same resistance value as the second resistor R2 at the preset heating temperature. The fact that the first resistor R1 and the third resistor R3 have the same resistance value ensures that the reference voltage portions of the two voltage divider circuits are consistent under the same power supply voltage.

[0039] Preferably, the resistance values ​​of the first resistor R1 and the third resistor R3 are 10K ohms.

[0040] Furthermore, the comparator unit also includes: a first capacitor C1, a second capacitor C2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an N-MOS transistor Q2, and a P-MOS transistor Q1; the positive power supply pin of comparator U1 is connected to the first power supply port VDD1, one end of the first capacitor C1 and one end of the second capacitor C2 are both connected to the positive power supply pin of comparator U1, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are both grounded; the negative power supply pin of comparator U1 is grounded; one end of the fifth resistor R5 is connected to one end of the first capacitor C1. The other end of the fifth resistor R5 is connected to the output pin of comparator U1; the output pin of comparator U1 is also connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the gate of N-MOS transistor Q2, the source of N-MOS transistor Q2 is grounded, one end of the seventh resistor R7 and the gate of P-MOS transistor Q1 are connected to the drain of N-MOS transistor Q2, the other end of the seventh resistor R7 and the drain of P-MOS transistor Q1 are connected to the second power supply port VDD2, and the source of P-MOS transistor Q1 is connected to the graphene flexible electrothermal film.

[0041] Understandably, when comparator U1 outputs a high level, N-MOS transistor Q2 is turned on, the gate of P-MOS transistor Q1 is pulled low, P-MOS transistor Q1 is turned on, and the graphene flexible heating film is powered on and heated. When comparator U1 outputs a low level, N-MOS transistor Q2 is turned off, the gate of P-MOS transistor Q1 is pulled up to the second power supply port VDD2 through the seventh resistor R7, P-MOS transistor Q1 is turned off, and the graphene flexible heating film is de-energized and stops heating.

[0042] Preferably, the first capacitor C1 is 0.1uF / 50V, the second capacitor C2 is 10uF / 16V, the fifth resistor R5 is 10K ohms, the sixth resistor R6 is 10K ohms, and the seventh resistor R7 is 100K ohms.

[0043] Furthermore, the comparator unit also includes an eighth resistor R8. One end of the eighth resistor R8 is connected to the other end of the sixth resistor R6, and the other end of the eighth resistor R8 is grounded together with the source of the N-MOS transistor Q2. It is understood that the addition of the eighth resistor R8 provides a more stable reference for the gate voltage of the N-MOS transistor Q2, reducing false triggering caused by source voltage fluctuations or power supply noise, and ensuring the reliability of the circuit in complex environments.

[0044] Preferably, the eighth resistor R8 is 100K ohms.

[0045] Furthermore, the output voltage of the first power port VDD1 is 3.3V, and the output voltage of the second power port VDD2 is 5V.

[0046] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be regarded as equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An umbrella opening controller with graphene heating function, characterized in that, include: Controller housing; A control circuit board is located inside the controller housing, and a signal control circuit is installed on it; The controller housing has a graphene flexible electrothermal film attached to its inner wall, and the graphene flexible electrothermal film is electrically connected to the signal control circuit.

2. The umbrella opening controller with graphene heating function according to claim 1, characterized in that, The signal control circuit includes a temperature detection unit and a comparison unit. The temperature detection unit is used to detect the current ambient temperature. The comparison unit is used to compare the current ambient temperature with a preset heating temperature. When the comparison unit determines that the current ambient temperature is lower than the preset heating temperature, it supplies power to the graphene flexible electrothermal film to heat it.

3. The umbrella opening controller with graphene heating function according to claim 2, characterized in that, The temperature detection unit includes a first resistor and a second resistor; the comparison unit includes a third resistor, a fourth resistor and a comparator; one end of the first resistor is connected to a first power supply port, one end of the second resistor is grounded, and the other ends of the first resistor and the other ends of the second resistor are connected to the positive input pin of the comparator. One end of the third resistor is connected to the first power supply port, one end of the fourth resistor is grounded, and the other ends of the third resistor and the fourth resistor are connected together to the negative input pin of the comparator; wherein, the second resistor is a thermistor.

4. The umbrella opening controller with graphene heating function according to claim 2, characterized in that, The preset heating temperature is -25℃.

5. The umbrella opening controller with graphene heating function according to claim 3, characterized in that, The first resistor has the same resistance value as the third resistor, and the fourth resistor has the same resistance value as the second resistor at the preset heating temperature.

6. The umbrella opening controller with graphene heating function according to claim 3, characterized in that, The comparator unit further includes: a first capacitor, a second capacitor, a fifth resistor, a sixth resistor, a seventh resistor, an N-MOS transistor, and a P-MOS transistor; the positive power supply pin of the comparator is connected to the first power supply port; one end of the first capacitor and one end of the second capacitor are both connected to the positive power supply pin of the comparator; the other ends of the first capacitor and the other ends of the second capacitor are both grounded; the negative power supply pin of the comparator is grounded; one end of the fifth resistor is connected to one end of the first capacitor; the other end of the fifth resistor is connected to the output pin of the comparator; the output pin of the comparator is also connected to one end of the sixth resistor; the other end of the sixth resistor is connected to the gate of the N-MOS transistor; the source of the N-MOS transistor is grounded; one end of the seventh resistor and the gate of the P-MOS transistor are both connected to the drain of the N-MOS transistor; the other end of the seventh resistor and the drain of the P-MOS transistor are both connected to the second power supply port; the source of the P-MOS transistor is connected to the graphene flexible electrothermal film.

7. The umbrella opening controller with graphene heating function according to claim 6, characterized in that, The comparison unit also includes an eighth resistor, one end of which is connected to the other end of the sixth resistor, and the other end of the eighth resistor is grounded together with the source of the N-MOS transistor.

8. The umbrella opening controller with graphene heating function according to claim 6, characterized in that, The output voltage of the first power port is 3.3V, and the output voltage of the second power port is 5V.

9. The umbrella opening controller with graphene heating function according to claim 1, characterized in that, The control circuit board is also provided with a signal indicator light electrically connected to the signal control circuit. The controller housing is made of transparent material. The graphene flexible electrothermal film is provided with an air-avoidance area. The air-avoidance area corresponds to the projection of the signal indicator light toward the controller housing, and the air-avoidance area is greater than or equal to the projection range of the signal indicator light toward the controller housing.

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