28V direct-current ground power supply combined socket

Abstract

The 28V direct-current ground power supply combined socket is suitable for connection between an airborne power supply system and a ground power supply and one-way charging of the power supply system and comprises a shell, the ground power supply comprises a first adapter plug and a second adapter plug, the power supply system is provided with a relay, one side face of the shell is provided with a first socket and a second socket, and the first socket and the second socket are connected with the shell. A first adapter plug and a second adapter plug are arranged on one side face of the shell, a sealing socket is arranged on the other side face of the shell, a binding post is arranged at the position, close to the sealing socket, of the shell, the first socket and the second socket are correspondingly connected with the first adapter plug and the second adapter plug in an inserted mode, the sealing socket is in communication connection with an onboard controller, and the overall use function of the socket is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne sockets, and in particular relates to a 28V direct current ground power supply combination socket. Background Art

[0002] The 28V DC ground power combination socket is used for aircraft power supply systems with high power demand. The existing ground power socket cannot realize power supply status display, control, ground power monitoring, overvoltage and undervoltage ground power protection and communication functions, and has low performance and efficiency. Summary of the invention

[0003] In view of this, the 28V DC ground power combination socket provided by the present invention can solve the technical problem of low efficiency of existing sockets.

[0004] A 28V DC ground power combination socket, suitable for connecting an airborne power supply system with a ground power supply, and unidirectionally charging the power supply system, comprises a shell, the ground power supply comprises a first matching plug and a second matching plug, the power supply system is provided with a relay, a first socket and a second socket are provided on one side of the shell, a sealed socket is provided on the other side, a terminal is provided at a position adjacent to the sealed socket on the shell, the first socket and the second socket are correspondingly plugged with the first matching plug and the second matching plug, the sealed socket is communicatively connected with an airborne controller, wherein,

[0005] A circuit board is arranged in the shell, the terminal is connected to the terminal with the first socket and the second socket through a bus, the circuit board is electrically connected to the bus through a monitoring module, and the monitoring module is electrically connected to the sealed socket. When the ground power supply is abnormal, the monitoring module feeds back a fault signal to the airborne controller through the sealed socket to turn off the relay and stop charging the power supply system.

[0006] Beneficial Effects

[0007] The present invention integrates the functions of existing ground power sockets, realizes lightweight design of the product through weight-reducing structure and weight-reducing material selection, enhances the environmental resistance of the product through sealing structure and component surface treatment design, and internally arranges a monitoring module for monitoring the voltage information of the ground power socket, and realizes functions such as ground power overvoltage and undervoltage protection and communication data reporting through ARI NC 429 bus reporting RI U. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 is a front view of the shell;

[0010] Figure 2 is a back view of the shell;

[0011] Figure 3 is a schematic diagram of a plug detection circuit;

[0012] Figure 4 is a schematic diagram of the regulation circuit, where

[0013] 1. Shell; 21. First socket; 22. Second socket; 3. Sealed socket; 4. Insulating seat; 51. First indicator light; 52. Second indicator light; 6. Toggle switch. DETAILED DESCRIPTION

[0014] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0015] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0016] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0017] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure, and only show the components related to the present disclosure rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout type may also be more complicated.

[0018] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, one skilled in the art will appreciate that aspects may be practiced without these specific details.

[0019] like Figures 1 to 4 The 28V DC ground power combination socket shown is suitable for connecting the onboard power supply system with the ground power supply, and unidirectionally charging the power supply system, including a housing 1, the ground power supply includes a first matching plug and a second matching plug, and the power supply system is provided with a relay. Specifically,

[0020] A first socket 21 and a second socket 22 are provided on one side of the housing 1, and a sealed socket 3 is provided on the other side. A terminal is provided on the housing 1 near the sealed socket 3. The first socket 21 and the second socket 22 are correspondingly plugged with the first matching plug and the second matching plug. The sealed socket 3 is connected to the onboard controller for communication, wherein:

[0021] A circuit board is arranged in the shell 1, and the terminal is connected to the terminals of the first socket 21 and the second socket 22 through a bus. The circuit board is electrically connected to the bus through a monitoring module, and the monitoring module is electrically connected to the sealed socket 3. When the ground power supply is abnormal, the monitoring module feeds back a fault signal to the airborne controller through the sealed socket 3 to turn off the relay and stop charging the power supply system. Preferably, a first indicator light 51 is arranged at a position adjacent to the first socket 21 on the shell 1, and a second indicator light 52 is arranged at a position adjacent to the second socket 22 on the shell 1. The positive poles of the first indicator light 51 and the second indicator light 52 are connected to the output end of the monitoring module, and the negative poles are connected to the output end of the airborne controller, and are used to display the status of whether the first socket 21 and the second socket 22 are charged normally. For example, when the ground power supply meets the power supply quality, it is a green light, and when it does not meet the quality, it is a red light.

[0022] As a specific implementation provided in this case, the first socket 21 is provided with a first short pin SA1, and the second socket 22 is provided with a second short pin SA2, the first short pin is connected to the first matching plug, and the second short pin is connected to the second matching plug, the monitoring module is arranged on the circuit board, and includes a plug detection circuit for detecting the status of the two sockets, and the plug detection circuit includes a first linear optical coupler IC4 and a second linear optical coupler IC5, wherein,

[0023] One end of the output end of the first short pin SA1 is grounded through a capacitor C27, and the other end is connected to an inductor L2. The output end of the inductor L2 is respectively connected to a capacitor C28 and a resistor R17. The output end of the capacitor C28 is grounded. The output end of the resistor R17 is connected to an input end of a first linear optocoupler IC4. The other input and output ends of the first linear optocoupler IC4 are grounded. One output end of the first linear optocoupler IC4 is grounded and the other output end is respectively connected to a 3.3V DC power supply and a resistor R19. The power supply of the first linear optocoupler IC4 is configured with a resistor R18. The output end of the resistor R19 is connected to a sealed socket 3. The first linear optocoupler IC4 is used for isolating analog signals. When the first short pin SA1 is not properly connected to the first matching plug, a first fault signal is output through the resistor R19, and the onboard controller disconnects the relay to stop charging the onboard power supply system.

[0024] One end of the output end of the second short pin SA2 is grounded through a capacitor C30, and the other end is connected to an inductor L3. The output end of the inductor L3 is respectively connected to a capacitor C31 and a resistor R20. The output end of the capacitor C31 is grounded. The output end of the resistor R20 is connected to an input end of the second linear optocoupler IC5. The other input end of the second linear optocoupler IC5 is grounded. One input end of the second linear optocoupler IC5 is grounded and the other output end is respectively connected to a 3.3V DC power supply and a resistor R22. The power supply of the second linear optocoupler IC5 is configured with a resistor R21. The output end of the resistor R22 is connected to the sealed socket 3. The second linear optocoupler IC5 is used for isolating analog signals. When the second short pin SA2 is not docked with the second matching plug, a second fault signal is output through the resistor R22, and the onboard controller disconnects the relay to stop charging the onboard power supply system.

[0025] By measuring the degree of fit with the short pin, the 28V DC power supply connector is detected to see if it is in contact. When the long pin is in contact, the controller is powered on. In this case, if the short pin is not in contact, the input end of the isolation optocoupler or linear optocoupler cannot form a closed loop, and the port corresponding to the microcontroller of the monitoring module has no high-level input, and the controller will not continue to control the 28V DC power supply input to the machine; conversely, if the long and short pins of the 28V DC power supply connector are in contact, the isolation optocoupler input can form a closed loop, and the program will enter the judgment interrupt after the power supply is normally connected to determine the overvoltage and undervoltage conditions of the 28V DC power supply, thereby ensuring the reliability and stability of power transmission.

[0026] Further, the first socket 21 is provided with a first long pin LA1, and the second socket 22 is provided with a second long pin LA2. The first long pin LA1 is connected to the first matching plug, and the second long pin LA2 is connected to the second matching plug. The monitoring module also includes a regulating circuit, and the regulating circuit includes a first comparator IC3A and a second comparator IC3B. The regulating circuit is used to ensure that the charging voltage of the onboard power supply system is 27.5V-28.5V, wherein,

[0027] The output end of the terminal of the first long needle LA1 is connected in series with a resistor R11 and an adjustable resistor W1 in sequence, and the adjustable resistor W1 is used to adjust the power supply accuracy of the ground power supply, and the output end is respectively connected to a transient suppression diode TVS1, a resistor R12, a capacitor C20 and a positive input end of the first comparator IC3A, the transient suppression diode TVS1, the resistor R12 and the capacitor C20 are all connected in parallel, the transient suppression diode TVS1 prevents the first comparator IC3A from being broken down, the positive input end of the first comparator IC3A is connected to a 12V DC power supply and is configured with a capacitor C21, the negative input end of the first comparator IC3A is respectively grounded and the output end of the first comparator IC3A, the output end of the first comparator IC3A is connected in series with a resistor R13, the output end of the resistor R13 is connected to the 429 control chip, the 429 control chip is electrically connected to the 429 transceiver chip, the 429 transceiver chip is electrically connected to the sealed socket 3, and the first comparator I C3A can identify whether the charging parameters of the first matching plug are abnormal. If abnormal, the onboard control shuts off the relay and stops charging the onboard power supply system;

[0028] The output end of the terminal of the second long needle LA2 is connected in series with a resistor R14 and an adjustable resistor W2 in sequence, and the adjustable resistor W2 is used to adjust the power supply accuracy of the ground power supply, and the output end is respectively connected to a transient suppression diode TVS2, a resistor R15, a capacitor C22 and a positive input end of the second comparator IC3B, the transient suppression diode TVS2, the resistor R15 and the capacitor C22 are all connected in parallel, the transient suppression diode TVS2 prevents the second comparator IC3B from being broken down, the positive input end of the second comparator IC3B is connected to a 12V DC power supply and is configured with a capacitor, the negative input end of the second comparator IC3B is respectively grounded and the output end of the second comparator IC3B, the output end of the second comparator IC3B is connected in series with a resistor R16, the output end of the resistor R16 is connected to the 429 control chip, the 429 control chip is electrically connected to the 429 transceiver chip, the 429 transceiver chip is electrically connected to the sealed socket 3, and the second comparator I C3B can identify whether the charging parameters of the second matching plug are abnormal. If abnormal, the onboard control shuts off the relay and stops charging the onboard power supply system.

[0029] Furthermore, the output ends of the resistor 19 and the resistor R22 are electrically connected to the 429 control chip. An insulating seat 4 is provided on the side of the shell 1. The insulating seat 4 is used for installing the terminal to prevent the terminal from being connected to the shell 1.

[0030] The output end of the first comparator IC3A is connected to diodes D4 and D5 respectively, the anode of the diode D4 is connected to a 3.3V DC power supply, and the cathode of the diode D5 is grounded, so as to ensure the stability of the power supply voltage of the first comparator IC3A;

[0031] The output end of the second comparator IC3B is connected to diodes D6 and D7 respectively, the anode of the diode D6 is connected to a 3.3V DC power supply, and the cathode of the diode D7 is grounded, so as to ensure the stability of the power supply voltage of the second comparator IC3B.

[0032] Furthermore, a button switch 6 is provided on the side of the housing 1 near the second socket 22, and the terminals of the first socket 21 and the second socket 22 are connected to the terminal posts through terminal relays, and the button switch 6 can control the opening or closing of the terminal relays.

[0033] As a specific implementation method provided in this case, the shell 1 is made of aluminum alloy plate 7075 material with high strength and low density, and is designed with a weight-reducing groove to ensure the structural strength of the product while reducing the weight of the product.

[0034] Working principle: Set up a plug detection circuit or a short pin in place judgment circuit, and detect whether the 28V DC power supply connector is in place through the degree of coordination between the long and short pins and the two sockets. When the long pin is in place, the controller is powered on. In this case, if the short pin is not in place, the isolation optocoupler input end cannot form a closed loop, and there is no high-level input to the corresponding port of the microcontroller, and the controller will not continue to control the 28V DC power input to the machine; on the contrary, if the long pins of the 28V DC power supply connector are in place, the isolation optocoupler input end can form a closed loop, and the program will enter the judgment interrupt after the power supply is normally connected to judge the overvoltage and undervoltage conditions of the 28V DC power supply, thereby ensuring the reliability and stability of power transmission;

[0035] An existing ground power quality monitoring circuit is set up, and the analog voltage conditioning and acquisition of the 28V DC power supply is realized through a voltage divider resistor and a potentiometer. The adjustable potentiometer is used in conjunction with the calculated resistance value to convert the 28V power input into a voltage level that can be observed by the single-chip microcomputer. The voltage follower circuit that plays an isolation protection role is used to send the level signal to the inside of the single-chip microcomputer, thereby realizing the observation of the 28V power supply overvoltage, undervoltage or normal state, and an adjustment circuit is designed on the circuit board. After the voltage is sampled, it is compared with the overvoltage and undervoltage range data preset by the software. When a corresponding fault occurs, an instruction is output to the drive circuit, the control relay is disconnected, and the product stops outputting the 28VDC control signal to the upper computer, thereby realizing the overvoltage and undervoltage protection functions.

[0036] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A 28V DC ground power combination socket, suitable for connecting an onboard power supply system with a ground power supply, and for unidirectional charging of the power supply system, comprising a housing, the ground power supply comprising a first matching plug and a second matching plug, the power supply system being provided with a relay, characterized in that: A first socket and a second socket are provided on one side of the shell, and a sealed socket is provided on the other side. A terminal is provided on the shell near the sealed socket. The first socket and the second socket are correspondingly plugged with the first matching plug and the second matching plug. The sealed socket is communicatively connected with the onboard controller, wherein: A circuit board is arranged in the shell, the terminal is connected to the terminal with the first socket and the second socket through a bus, the circuit board is electrically connected to the bus through a monitoring module, and the monitoring module is electrically connected to the sealed socket. When the ground power supply is abnormal, the monitoring module feeds back a fault signal to the airborne controller through the sealed socket to turn off the relay and stop charging the power supply system.

2. The 28V DC ground power combination socket according to claim 1, characterized in that: A first indicator light is disposed on the housing near the first socket, and a second indicator light is disposed on the housing near the second socket, wherein: The positive poles of the first indicator light and the second indicator light are connected to the output end of the monitoring module, and the negative poles are connected to the output end of the onboard controller, and are used to display the status of whether the first socket and the second socket are charging normally.

3. The 28V DC ground power combination socket according to claim 2, characterized in that: An insulating seat is arranged on the side surface of the shell, and the insulating seat is used for installing the terminal to prevent the terminal from being electrically connected to the shell.

4. The 28V DC ground power combination socket according to claim 3, characterized in that: The first socket is provided with a first short pin SA1, and the second socket is provided with a second short pin SA2. The first short pin is connected to a first matching plug, and the second short pin is connected to a second matching plug. The monitoring module is arranged on a circuit board and includes a plug detection circuit. The plug detection circuit includes a first linear optocoupler IC4 and a second linear optocoupler IC5, wherein: One end of the output end of the first short pin SA1 is grounded through a capacitor C27, and the other end is connected to an inductor L2. The output end of the inductor L2 is respectively connected to a capacitor C28 and a resistor R17. The output end of the capacitor C28 is grounded. The output end of the resistor R17 is connected to an input end of a first linear optocoupler IC4. The other input and output ends of the first linear optocoupler IC4 are grounded. One output end of the first linear optocoupler IC4 is grounded and the other output end is respectively connected to a 3.3V DC power supply and a resistor R19. The power supply of the first linear optocoupler IC4 is configured with a resistor R18. The output end of the resistor R19 is connected to the sealed socket. The first linear optocoupler IC4 is used for isolating analog signals. One end of the output end of the second short pin SA2 is grounded through a capacitor C30, and the other end is connected to an inductor L3. The output end of the inductor L3 is respectively connected to a capacitor C31 and a resistor R20. The output end of the capacitor C31 is grounded. The output end of the resistor R20 is connected to an input end of a second linear optocoupler IC5. The other input end of the second linear optocoupler IC5 is grounded. One input end of the second linear optocoupler IC5 is grounded and the other output end is respectively connected to a 3.3V DC power supply and a resistor R22. The power supply of the second linear optocoupler IC5 is configured with a resistor R21. The output end of the resistor R22 is connected to the sealed socket. The second linear optocoupler IC5 is used for isolating analog signals.

5. The 28V DC ground power combination socket according to claim 4, characterized in that: The first socket is provided with a first long pin LA1, and the second socket is provided with a second long pin LA2. The first long pin LA1 is connected to the first matching plug, and the second long pin LA2 is connected to the second matching plug. The monitoring module also includes a regulating circuit, and the regulating circuit includes a first comparator IC3A and a second comparator IC3B. The regulating circuit is used to ensure that the charging voltage of the onboard power supply system is 27.5V-28.5V, wherein, The output end of the terminal of the first long needle LA1 is connected in series with a resistor R11 and an adjustable resistor W1 in sequence, and the adjustable resistor W1 is used to adjust the power supply accuracy of the ground power supply, and the output end is respectively connected to a transient suppression diode TVS1, a resistor R12, a capacitor C20 and a positive input end of the first comparator IC3A, the transient suppression diode TVS1, the resistor R12 and the capacitor C20 are all connected in parallel, and the transient suppression diode TVS1 prevents the first comparator IC3A from being broken down, the positive input end of the first comparator IC3A is connected to a 12V DC power supply and is configured with a capacitor C21, the negative input end of the first comparator IC3A is respectively grounded and the output end of the first comparator IC3A, the output end of the first comparator IC3A is connected in series with a resistor R13, the output end of the resistor R13 is connected to the 429 control chip, the 429 control chip is electrically connected to the 429 transceiver chip, the 429 transceiver chip is electrically connected to the sealed socket, and the first comparator IC3A can identify whether the charging parameters of the first matching plug are abnormal; The output end of the terminal of the second long needle LA2 is connected in series with a resistor R14 and an adjustable resistor W2 in sequence, and the adjustable resistor W2 is used to adjust the power supply accuracy of the ground power supply, and the output end is respectively connected to a transient suppression diode TVS2, a resistor R15, a capacitor C22 and a positive input end of the second comparator IC3B, the transient suppression diode TVS2, the resistor R15 and the capacitor C22 are all connected in parallel, and the transient suppression diode TVS2 prevents the second comparator IC3B from being broken down, the positive input end of the second comparator IC3B is connected to a 12V DC power supply and is configured with a capacitor, the negative input end of the second comparator IC3B is respectively grounded and the output end of the second comparator IC3B, the output end of the second comparator IC3B is connected in series with a resistor R16, the output end of the resistor R16 is connected to the 429 control chip, the 429 control chip is electrically connected to the 429 transceiver chip, the 429 transceiver chip is electrically connected to the sealed socket, and the second comparator IC3B can identify whether the charging parameters of the second matching plug are abnormal.

6. The 28V DC ground power combination socket according to claim 5, characterized in that: The output ends of the resistor 19 and the resistor R22 are both electrically connected to the 429 control chip.

7. The 28V DC ground power combination socket according to claim 6, characterized in that: The output end of the first comparator IC3A is connected to diodes D4 and D5 respectively, the anode of the diode D4 is connected to a 3.3V DC power supply, and the cathode of the diode D5 is grounded, so as to ensure the stability of the power supply voltage of the first comparator IC3A; The output end of the second comparator IC3B is connected to diodes D6 and D7 respectively, the anode of the diode D6 is connected to a 3.3V DC power supply, and the cathode of the diode D7 is grounded, so as to ensure the stability of the power supply voltage of the second comparator IC3B.

8. The 28V DC ground power combination socket according to claim 7, characterized in that: A button switch is arranged on the side surface of the shell near the second socket, and the terminals of the first socket and the second socket are connected to the terminal post through a terminal relay, and the button switch can control the opening or closing of the terminal relay.

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