Single-key multipath switching output circuit

Abstract

The utility model discloses a single button multipath switching output circuit, comprising a control circuit, a single button trigger circuit, a first load output circuit and a second load output circuit, the control circuit is connected with a direct current 5V power supply, the control circuit is connected with the single button trigger circuit, the first load output circuit and the second load output circuit, the control circuit comprises a chip U1, and the chip U1 is connected with the chip U1. The single-key trigger circuit comprises a self-reset key S1, the self-reset key S1 is pressed down to enable the single-key trigger circuit to drive the control circuit to enable the chip U1 to output a high level, the chip U1 outputs the high level to the first load output circuit and the second load output circuit through corresponding pins, and power supply output of corresponding loads is achieved. Through the above mode, the single-button multipath switching output circuit realizes multipath switching output through the single button, realizes sequential conduction of different loops through the single button, can realize multipath switching control of light brightness, broadcast volume, air-conditioning air volume and the like of a motor train unit, and meets use requirements of multiple scenes and different gears.

Description

Technical Field

[0001] The utility model relates to the technical field of train switch circuits, in particular to a single-button multi-channel switching output circuit. Background Art

[0002] At present, the panel light switches, air volume switches, etc. in the EMU cars mostly use self-resetting single-button switches and knob switches to achieve a single switch function and switching functions of different gears.

[0003] Nowadays, with the development of intelligent EMUs, traditional self-resetting single-button switches and knob switches have gradually revealed their limitations and can no longer meet the development needs of intelligent trains:

[0004] First, the traditional self-resetting single-button switch or knob switch has a long response time and slow action speed during operation and control;

[0005] Second, each function requires an independent mechanical switch control, the number of circuit components is large and the structure is complicated, which affects the stability and reliability of the switch control. Utility Model Content

[0006] The main technical problem solved by the utility model is to provide a single-button multi-channel switching output circuit, which realizes multi-channel switching output through a single button, realizes the single button to turn on different circuits in sequence, and can realize multi-channel switching control of the light brightness, broadcast volume, air conditioning air volume, etc. of the EMU; replaces the traditional self-resetting single-button switch or knob switch, the circuit has few components and is practical and reliable, the control is stable and reliable, the number of channels can be customized, and the use requirements of different gear numbers in multiple scenarios are met, which is in line with the intelligent development trend of the EMU.

[0007] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a single-button multi-channel switching output circuit, including: a control circuit, a single-button trigger circuit, a first load output circuit and a second load output circuit, the control circuit is connected to a DC 5V power supply, the control circuit is connected to the single-button trigger circuit, the first load output circuit and the second load output circuit,

[0008] The control circuit includes a chip U1, and the single-button trigger circuit includes a self-reset button S1. By pressing the self-reset button S1, the single-button trigger circuit drives the control circuit to make the chip U1 output a high level. The chip U1 outputs a high level to the first load output circuit and the second load output circuit through the corresponding pins, thereby realizing the power supply output of the corresponding loads.

[0009] In a preferred embodiment of the utility model, the control circuit includes a chip U1, a DC 5V power supply, a resistor R6 and a capacitor C1, one end of the capacitor C1 is connected to the DC 5V power supply, the other end of the capacitor C1 is connected to the resistor R6, the other end of the resistor R6 is connected to the Vss end of the chip U1, the DC 5V power supply provides a high level to the RESET pin of the chip U1, and outputs a high level through the 0 pin of the chip U1.

[0010] In a preferred embodiment of the present invention, the chip U1 is a decimal counter chip.

[0011] In a preferred embodiment of the utility model, the single-button trigger circuit includes a self-reset button S1, a current limiting resistor R9, a button debouncing resistor R1 and a capacitor C2, one end of the self-reset button S1 is connected to the CLOCK IN pin of the chip U1 via the current limiting resistor R9, and the other end of the self-reset button S1 is connected to the VDD end of the chip U1 via the button debouncing resistor R1, and the capacitor C2 is connected in parallel with the button debouncing resistor R1.

[0012] In a preferred embodiment of the utility model, the first load output circuit includes a DC 5V power supply, a load 1, a resistor R7 and a MOS tube Q1, the G end of the MOS tube Q1 is connected to the 1 pin of the chip U1 through the resistor R7, the G end of the MOS tube Q1 is connected to the load 1 and connected to the DC 5V power supply through the load 1, and the S end of the MOS tube Q1 is connected to GND, forming a DC 5V+, MOS tube Q1 to GND loop, so as to realize power supply output to the load 1.

[0013] In a preferred embodiment of the utility model, the second load output circuit includes a DC 5V power supply, a load 2, a resistor R8 and a MOS tube Q2, the G end of the MOS tube Q2 is connected to the 2 pin of the chip U1 through the resistor R8, the G end of the MOS tube Q2 is connected to the load 2 and connected to the DC 5V power supply through the load 2, and the S end of the MOS tube Q2 is connected to GND, forming a DC 5V+, MOS tube Q2 to GND loop, thereby realizing power supply output to the load 2.

[0014] In a preferred embodiment of the present invention, a diode D1 is further included, one end of the diode D1 is connected to the 3 pin of the chip U1, and the other end of the diode D1 is connected to the RESET pin of the chip U1.

[0015] The beneficial effects of the utility model are: multi-channel switching output can be achieved through a single button, and different circuits can be turned on in sequence by a single button, so that multi-channel switching control such as the brightness of lights, broadcast volume, and air conditioning volume of the EMU can be realized; replacing the traditional self-resetting single-button switch or knob switch, the circuit has few components and is practical and reliable, the control is stable and reliable, the number of channels can be customized, and the use requirements of different gear numbers in multiple scenarios are met, which is in line with the development trend of intelligent EMUs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of a single-button multi-channel switching output circuit of the utility model; DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The utility model relates to a preferred embodiment of a single-key multi-channel switching output circuit.

[0021] See also Figure 1 The single-button multi-channel switching output circuit includes: a control circuit, a single-button trigger circuit, a first load output circuit and a second load output circuit. The control circuit is connected to a DC 5V power supply, and the control circuit is connected to the single-button trigger circuit, the first load output circuit and the second load output circuit.

[0022] In an exemplary embodiment, the control circuit includes a chip U1, and the single-button trigger circuit includes a self-reset button S1. By pressing the self-reset button S1, the single-button trigger circuit drives the control circuit to make the chip U1 output a high level. The chip U1 outputs a high level to the first load output circuit and the second load output circuit through the corresponding pins, thereby realizing the power supply output of the corresponding loads.

[0023] Specifically, the control circuit includes a chip U1, a DC 5V power supply, a resistor R6 and a capacitor C1, one end of the capacitor C1 is connected to the DC 5V power supply, the other end of the capacitor C1 is connected to the resistor R6, the other end of the resistor R6 is connected to the Vss end of the chip U1, the DC 5V power supply provides a high level to the RESET pin of the chip U1, and outputs a high level through the 0 pin of the chip U1. Preferably, the chip U1 is a decimal counter chip.

[0024] Furthermore, the single-button trigger circuit includes a self-reset button S1, a current limiting resistor R9, a button debouncing resistor R1 and a capacitor C2, one end of the self-reset button S1 is connected to the CLOCK IN pin of the chip U1 via the current limiting resistor R9, the other end of the self-reset button S1 is connected to the VDD end of the chip U1 via the button debouncing resistor R1, and the capacitor C2 is connected in parallel with the button debouncing resistor R1.

[0025] Furthermore, the first load output circuit includes a DC 5V power supply, a load 1, a resistor R7 and a MOS tube Q1, the G end of the MOS tube Q1 is connected to the 1 pin of the chip U1 through the resistor R7, the G end of the MOS tube Q1 is connected to the load 1 and connected to the DC 5V power supply through the load 1, and the S end of the MOS tube Q1 is connected to GND, forming a DC 5V+, MOS tube Q1 to GND loop, to realize power supply output to the load 1,

[0026] Furthermore, the second load output circuit includes a DC 5V power supply, a load 2, a resistor R8 and a MOS tube Q2, the G end of the MOS tube Q2 is connected to the 2 pin of the chip U1 through the resistor R8, the G end of the MOS tube Q2 is connected to the load 2 and connected to the DC 5V power supply through the load 2, and the S end of the MOS tube Q2 is connected to GND, forming a DC 5V+, MOS tube Q2 to GND loop, to realize power supply output to the load 2,

[0027] The single-button multi-channel switching output circuit further includes a diode D1 , one end of the diode D1 is connected to the 3 pin of the chip U1 , and the other end of the diode D1 is connected to the RESET pin of the chip U1 .

[0028] The control process of the utility model single-button multi-channel switching output circuit is:

[0029] In the initial state, when the DC 5V power supply is powered on, the capacitor C1 is charged through the resistor R6. The 15th "RESET pin" of the chip U1 is high level at the moment of power on. As the capacitor C1 is fully charged, the pin becomes low level, completing the reset of the chip U1. In the initial state, the 3rd "0 pin" of the chip U1 outputs a high level.

[0030] When the self-reset button S1 is pressed for the first time, the clock input of the 13th "CLOCK IN pin" of chip U1 is completed. The DC 5V power supply forms a high-level square wave through the button debouncing resistor R1, capacitor C2, self-reset button S1 and current limiting resistor R9. Chip U1 completes a count, and the second "1 pin" of chip U1 outputs a high level, which is turned on through the resistor R7 and MOS tube Q1 to form a turn-on voltage, thereby forming a loop from 5V+, load 1, MOS tube Q1 to GND, and realizing power supply output to load 1;

[0031] When the self-reset button S1 is pressed for the second time, the chip U1 completes the second count, the 4th "2 pin" outputs a high level, and the MOS tube Q2 is turned on to realize the power supply output to the load 2;

[0032] When the self-reset button S1 is pressed for the third time, the chip U1 completes the third count, and the 7th "3 pin" outputs a high level, which is connected to the 15th "RESET pin" through the diode D1, completing the reset and returning to the initial state;

[0033] Press the self-reset button S1 in sequence to realize the cycle of "no output", "first channel output" and "second channel output". If more channel outputs are required, the same MOS tube circuit can be added to pins 3 and 3 of chip U1, and the reset circuit can be moved to the position after the U1 chip pin has been used to realize multi-channel output.

[0034] The beneficial effects of the single-button multi-channel switching output circuit of the utility model are:

[0035] A single button can be used to switch multiple outputs, and different circuits can be switched on in sequence. This can realize multiple switching controls such as the brightness of the lights, the volume of the radio, and the air volume of the air conditioner.

[0036] Replacing the traditional self-resetting single-button switch or knob switch, this circuit has few components and is practical and reliable, with stable and reliable control. The number of channels can be customized to meet the usage requirements of different gear numbers in multiple scenarios, which is in line with the development trend of intelligent EMUs.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A single-button multi-channel switching output circuit, characterized in that: include: control circuit, single-button trigger circuit, first load output circuit and second load output circuit, The control circuit is connected to a 5V DC power supply, and the control circuit is connected to a single-button trigger circuit, a first load output circuit, and a second load output circuit. The control circuit includes a chip U1, and the single-button trigger circuit includes a self-reset button S1. By pressing the self-reset button S1, the single-button trigger circuit drives the control circuit to make the chip U1 output a high level. The chip U1 outputs a high level to the first load output circuit and the second load output circuit through the corresponding pins, thereby realizing the power supply output of the corresponding loads.

2. The single-button multi-channel switching output circuit according to claim 1, characterized in that: The control circuit includes a chip U1, a DC 5V power supply, a resistor R6 and a capacitor C1, one end of the capacitor C1 is connected to the DC 5V power supply, the other end of the capacitor C1 is connected to the resistor R6, the other end of the resistor R6 is connected to the Vss end of the chip U1, the DC 5V power supply provides a high level to the RESET pin of the chip U1, and outputs a high level through the 0 pin of the chip U1.

3. The single-button multi-channel switching output circuit according to claim 2, characterized in that: The chip U1 is a decimal counter chip.

4. The single-button multi-channel switching output circuit according to claim 1, characterized in that: The single-button trigger circuit includes a self-reset button S1, a current limiting resistor R9, a button debouncing resistor R1 and a capacitor C2. One end of the self-reset button S1 is connected to the CLOCK IN pin of the chip U1 via the current limiting resistor R9, and the other end of the self-reset button S1 is connected to the VDD end of the chip U1 via the button debouncing resistor R1. The capacitor C2 is connected in parallel with the button debouncing resistor R1.

5. The single-button multi-channel switching output circuit according to claim 1, characterized in that: The first load output circuit includes a DC 5V power supply, a load 1, a resistor R7 and a MOS tube Q1. The G end of the MOS tube Q1 is connected to pin 1 of the chip U1 through the resistor R7. The G end of the MOS tube Q1 is connected to the load 1 and connected to the DC 5V power supply through the load 1. The S end of the MOS tube Q1 is connected to GND to form a DC 5V+, MOS tube Q1 to GND loop to realize power supply output to the load 1.

6. The single-button multi-channel switching output circuit according to claim 1, characterized in that: The second load output circuit includes a DC 5V power supply, a load 2, a resistor R8 and a MOS tube Q2. The G end of the MOS tube Q2 is connected to pin 2 of the chip U1 through the resistor R8. The G end of the MOS tube Q2 is connected to the load 2 and connected to the DC 5V power supply through the load 2. The S end of the MOS tube Q2 is connected to GND to form a DC 5V+, MOS tube Q2 to GND loop to realize power supply output to the load 2.

7. The single-button multi-channel switching output circuit according to claim 1, characterized in that: It also includes a diode D1, one end of the diode D1 is connected to the 3 pin of the chip U1, and the other end of the diode D1 is connected to the RESET pin of the chip U1.

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