Universal switch relay driving module

Abstract

The utility model relates to the technical field of airplane auxiliary equipment, in particular to a universal switch relay driving module, which comprises a connecting terminal. The single chip microcomputer is connected with the connecting terminal; an onboard LED indicating lamp which is connected with the single-chip microcomputer; the onboard key is connected with the single chip microcomputer; the active single-ended driver is connected with the single chip microcomputer; the passive switch driver is connected with the single chip microcomputer; the active output port is connected with the active single-ended driver; and the passive output port is in driving connection with the passive switch. The universal switch relay driving module provided by the utility model has the characteristics of strong reliability, good compatibility, facilitation of modular and universal design, strong expansibility, high operation efficiency, simple wire connection, programmable function control and the like, and is suitable for being used as a switch driving module of various special detection devices in an aircraft installation and adjustment process; and the reliability of equipment can be obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft auxiliary equipment, in particular to a universal switch relay drive module. Background Art

[0002] Aircraft systems contain various relays and solenoid valves. In many processes of the installation and adjustment process, it is necessary to control the status of multiple relays and solenoid valves in real time and synchronously to verify whether the system functions normally. The traditional method uses power supply for testing, but this method can only test one channel at a time, and has the disadvantages of low efficiency, cumbersome switching, and easy misconnection. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a universal switch relay drive module. The module can introduce multiple controlled wiring harnesses at the same time, and has two driving modes: active single-ended drive and passive switch drive. In this way, all controlled wiring harnesses only need to be introduced into the module through standard connection plugs and adapter cables, and the real-time and synchronous control of the conduction status between all wiring harnesses can be completed without changing the wires. It can be applied to a variety of drive devices to solve the problems of low efficiency, cumbersome switching, and easy connection of wrong wire numbers in the traditional drive method during aircraft assembly and adjustment.

[0004] The technical problem to be solved by the utility model is achieved by the following technical solutions:

[0005] A universal switch relay drive module, comprising:

[0006] Connection terminals, used to communicate with the host computer;

[0007] A single chip microcomputer is connected to the connection terminal and is used for receiving AT instructions sent by the host computer through the connection terminal and sending corresponding driving signals according to the instruction information to control the actions of the relay and the driving source;

[0008] Onboard LED indicator lights, connected to the single-chip microcomputer, including a 5mm LEDA indicator light that displays red, and a 5mm LEDB indicator light that displays blue. The red light flashes once when the connection terminal receives a byte of data, and the blue light flashes once when an action command is successfully completed;

[0009] Onboard buttons, connected to the microcontroller, for external drive source light inspection;

[0010] An active single-ended driver, connected to the single-chip microcomputer, used to display the LED indicator light on the device panel, and used to drive other qualified components;

[0011] A passive switch driver, connected to the single chip microcomputer, for controlling a switch quantity that needs to be electrically isolated from the device;

[0012] An active output port connected to the active single-ended driver;

[0013] The passive output port is connected to the passive switch driver.

[0014] Preferably, the connection terminal includes six pins, two of which are 5V input pins, two are GND ground pins, one serial port RXD line pin, and one serial port TXD line pin.

[0015] Preferably, the single chip microcomputer includes pins 1-39, the serial port RXD line pin in the connecting terminal is connected to pin 10, and the serial port TXD line pin in the connecting terminal is connected to pin 11.

[0016] Preferably, the LEDA indicator light in the onboard LED indicator light is connected to the pin 14 in the single-chip microcomputer, and the LEDB indicator light in the onboard LED indicator light is connected to the pin 15 in the single-chip microcomputer.

[0017] Preferably, the onboard keys include a KEY1 key and a KEY2 key, the KEY1 key is connected to a pin 12 in the single-chip microcomputer, and the KEY2 key is connected to a pin 13 in the single-chip microcomputer.

[0018] Preferably, the active single-ended driver includes a 5V common cathode LED1-16 drive port, and the LED1-16 drive port is correspondingly connected to pins 1-8 and pins 21-28 in the single-chip microcomputer.

[0019] Preferably, the passive switch drive includes independently controlled RLY1-8 relay switch ports, and the RLY1-8 relay switch ports are correspondingly connected to pins 39-32 in the single-chip microcomputer.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a universal switch relay drive module with the characteristics of strong reliability, good compatibility, modular and universal design, strong expansibility, high operating efficiency, simple wiring, programmable function control, etc. The module is suitable for use as a switch drive module for various special detection equipment in the aircraft assembly process, and can significantly improve the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is a schematic diagram of the circuit composition of the utility model;

[0024] Figure 2It is a circuit diagram of the connection terminals in the utility model;

[0025] Figure 3 It is a circuit diagram of the single chip microcomputer in the utility model;

[0026] Figure 4 This is a circuit diagram of the onboard LED indicator light in the utility model;

[0027] Figure 5 This is a circuit diagram of the onboard buttons in the utility model;

[0028] Figure 6 This is a schematic diagram of the circuit of active single-ended drive in the utility model;

[0029] Figure 7 This is a schematic diagram of a circuit for passive switch driving in the utility model;

[0030] Figure 8 It is a circuit diagram of an active output port in the utility model;

[0031] Fig. 9 It is a circuit diagram of the passive output port in the utility model.

[0032] In the figure: 1. Connection terminals; 2. Microcontroller; 3. Onboard LED indicator; 4. Onboard buttons; 5. Active single-ended drive; 6. Passive switch drive; 7. Active output port; 8. Passive output port. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1 As shown, a universal switch relay driver module includes a connection terminal 1, a single-chip microcomputer 2, an onboard LED indicator light 3, an onboard button 4, an active single-ended driver 5, a passive switch driver 6, an active output port 7, and a passive output port 8.

[0035] Specifically, the connection terminal 1 is used as a port for the module to power and communicate with the host computer. It contains 6 pins in total, including two 5V input pins, two GND ground pins, one serial port RXD line pin, and one serial port TXD line pin.

[0036] The model of the single chip microcomputer 2 is STC12C5A60S2, which is the main control device of this module. It is responsible for receiving AT commands sent by the host computer through the serial port, and sending corresponding drive signals according to the command information to control the actions of the relay and the drive source.

[0037] The single chip computer 2 includes pins 1-39, the serial port RXD line pin in the connecting terminal 1 is connected to the pin 10, and the serial port TXD line pin in the connecting terminal 1 is connected to the pin 11.

[0038] The onboard LED indicator light 3 includes a 5mm LEDA indicator light that displays red and a 5mm LEDB indicator light that displays blue. The red light flashes once each time the connection terminal 1 receives a byte of data, and the blue light flashes once when an action instruction is successfully completed.

[0039] The LEDA indicator light in the onboard LED indicator light 3 is connected to the pin 14 in the single chip microcomputer 2 , and the LEDB indicator light in the onboard LED indicator light 3 is connected to the pin 15 in the single chip microcomputer 2 .

[0040] The onboard key 4 is used for external drive source lamp inspection. The onboard key 4 includes a KEY1 key and a KEY2 key. The KEY1 key is connected to the pin 12 in the single-chip microcomputer 2, and the KEY2 key is connected to the pin 13 in the single-chip microcomputer 2. When the KEY1 key is pressed, the host computer instruction is skipped to force all drive sources to be turned on. When KEY1 is released, the output state set by all drive source instructions is restored. When the KEY2 key is pressed, the host computer instruction is skipped to force all drive sources to be turned off. When KEY2 is released, the output state set by all drive source instructions is restored.

[0041] The active single-ended driver 5 is used to display the LED indicator light on the panel of the device, and is used to drive other qualified components. The active single-ended driver 5 includes a 5V common cathode LED1-16 drive port, and the LED1-16 drive port is correspondingly connected to pins 1-8 and pins 21-28 in the single-chip computer 2.

[0042] The passive switch driver 6 has a model of SRA-05VDC and is used to control a switch quantity that needs to be electrically isolated from a device. The passive switch driver 6 includes independently controlled RLY1-8 relay switch ports, which are connected to pins 39-32 in the single-chip microcomputer 2 accordingly.

[0043] The active output port 7 is connected to the active single-ended driver 5 .

[0044] The passive output port 8 is connected to the passive switch driver 6 .

[0045] The working principle and use process of this utility model:

[0046] The host computer sends corresponding AT commands to the module through the connection terminal 1 to configure and control the module. After receiving the control command from the host computer, the microcontroller 2 on the module will take corresponding actions according to the command and feedback a response signal to the external device through the connection terminal 1.

[0047] Specifically, when the single-chip microcomputer 2 on the module receives the correct AT command, the module will execute the corresponding action command to control the switch state of each active single-ended driver 5 or each passive switch driver 6. There are eight baud rates available for the connection terminal 1 (the lowest is 1200bps and the highest is 115200bps). The module has two action modes, namely real-time execution mode (denoted as MODA) and buffer execution mode (denoted as MODB). Under MODA, the module will immediately execute each action instruction received, while under MODB, the module will retain all action instructions received during this period, and after exiting MODB (re-entering MODA), all action instructions reserved in the previous period will be executed simultaneously. MODA is suitable for quickly responding to a single instruction, but due to communication delays, there will be a certain interval between multiple instructions of MODA, while MODB is suitable for merging multiple instructions into a combined instruction, and all instructions are executed synchronously without intervals when exiting MODB.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A universal switch relay driver module, characterized in that: include: A connection terminal (1) for communicating with a host computer; A single chip computer (2) is connected to the connection terminal (1) and is used for receiving an AT command sent by a host computer through the connection terminal (1) and sending a corresponding drive signal according to the command information to control the action of the relay and the drive source; An onboard LED indicator light (3) is connected to the single chip computer (2), and includes a 5 mm LEDA indicator light that displays red, and a 5 mm LEDB indicator light that displays blue. The red light flashes once when the connection terminal (1) receives a byte of data, and the blue light flashes once when an action instruction is successfully completed; An onboard button (4) connected to the single chip microcomputer (2) and used for external drive source light inspection; An active single-ended driver (5), connected to the single-chip microcomputer (2), used to display an LED indicator light on a panel of a device, and used to drive other components that meet the requirements; A passive switch driver (6), connected to the single chip microcomputer (2), for controlling a switch quantity that needs to be electrically isolated from the device; An active output port (7) connected to the active single-ended driver (5); The passive output port (8) is connected to the passive switch driver (6).

2. A universal switch relay drive module according to claim 1, characterized in that: The connection terminal (1) comprises six pins, of which two pins are 5V input pins, two pins are GND ground pins, one serial port RXD line pin, and one serial port TXD line pin.

3. A universal switch relay drive module according to claim 2, characterized in that: The single chip computer (2) comprises pins 1-39, the serial port RXD line pin in the connecting terminal (1) is connected to pin 10, and the serial port TXD line pin in the connecting terminal (1) is connected to pin 11.

4. A universal switch relay drive module according to claim 3, characterized in that: The LEDA indicator light in the onboard LED indicator light (3) is connected to the pin 14 in the single chip computer (2), and the LEDB indicator light in the onboard LED indicator light (3) is connected to the pin 15 in the single chip computer (2).

5. A universal switch relay driving module according to claim 3, characterized in that: The onboard keys (4) include a KEY1 key and a KEY2 key, the KEY1 key is connected to a pin 12 in the single-chip computer (2), and the KEY2 key is connected to a pin 13 in the single-chip computer (2).

6. A universal switch relay drive module according to claim 3, characterized in that: The active single-ended driver (5) comprises a 5V common cathode LED1-16 drive port, and the LED1-16 drive port is correspondingly connected to pins 1-8 and pins 21-28 in the single chip computer (2).

7. A universal switch relay driving module according to claim 3, characterized in that: The passive switch driver (6) comprises independently controlled RLY1-8 relay switch ports, and the RLY1-8 relay switch ports are correspondingly connected to pins 39-32 in the single chip computer (2).

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