Two-line voltage pulse pull-down type stair inductive head

Abstract

The utility model discloses a two-line voltage pulse pull-down type stair inductive head, which is connected with a voltage pull-down pulse detection circuit and a constant current power supply circuit of a stair controller and comprises an inductor, an inductive switch tube, a voltage pulse pull-down amplification circuit and a power supply circuit, the inductor is connected with the voltage pulse pull-down amplification circuit through an induction switch tube; the power supply circuit is connected with the inductor and the power supply end of the voltage pulse pull-down amplification circuit; the power supply circuit and the voltage pulse pull-down amplification circuit are connected with a voltage pull-down pulse detection circuit and a constant current power supply circuit of the stair controller through two wires. According to the utility model, the structure arrangement is reasonable, double-wire connection is adopted, the wiring difficulty is reduced, the installation efficiency is improved, the installation cost is reduced, the generation of pull-down pulses is realized through the cooperation of the inductor and the induction switch tube, and the detection is realized through the voltage pull-down pulse detection circuit. Power supply and signal transmission can be realized through double lines, and the applicability is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of stair light sensor heads, specifically relating to a two-wire voltage pulse pull-down stair sensor head. Background Technology

[0002] Staircase lights are decorative structures installed on stair steps that gradually brighten as users ascend or descend the stairs. They not only effectively enhance the decorative effect of the staircase but also facilitate user access. Staircase lights generally consist of light strips and sensor heads. Existing sensor heads are mostly three-wire structures, namely a positive power wire, a negative power wire, and a signal wire. While this can meet general usage needs, the wiring is inconvenient and significantly increases wiring costs, thus limiting their applicability and practicality. Utility Model Content

[0003] The purpose of this invention is to provide a two-line voltage pulse pull-down stair induction head with a reasonable structural design that helps reduce costs.

[0004] The technical solution to achieve the purpose of this utility model is a two-wire voltage pulse pull-down stair sensor head, which is connected to the voltage pull-down pulse detection circuit and constant current power supply circuit of the stair controller, including a sensor, a sensing switch tube, a voltage pulse pull-down amplification circuit and a power supply circuit.

[0005] The sensor is connected to the voltage pulse pull-down amplifier circuit via a sensing switch, and is used to generate a pull-down voltage pulse when there is a sensing, and the signal is amplified by the voltage pulse pull-down amplifier circuit.

[0006] The power supply circuit is connected to the power supply terminal of the sensor and the voltage pulse pull-down amplifier circuit, and is used to power the sensor and the voltage pulse pull-down amplifier circuit.

[0007] The power supply circuit and voltage pulse pull-down amplifier circuit are connected to the voltage pull-down pulse detection circuit and constant current power supply circuit of the stair controller via two wires.

[0008] A further preferred embodiment is that the voltage pulse pull-down amplifier circuit includes a first capacitor and a first resistor connected in parallel.

[0009] A further preferred embodiment is that the sensing switch is an N-channel MOS transistor.

[0010] A further preferred embodiment is that the sensor is a human body sensor, a radar sensor, or a sound sensor.

[0011] A further preferred embodiment is that a unidirectional diode for preventing reverse discharge is connected in series at the input terminal of the power supply circuit.

[0012] This utility model has the following positive effects: The structure of this utility model is reasonable. It adopts a double-wire connection, which can reduce the number of signal lines, which helps to reduce wiring difficulty, improve installation efficiency, and reduce installation costs. It generates pull-down pulses by using a sensor in conjunction with an inductive switch tube, amplifies the signal through a voltage pulse pull-down amplification circuit, and detects the signal through a voltage pull-down pulse detection circuit. The double wires can not only provide power but also transmit signals, making it highly applicable. Attached Figure Description

[0013] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0014] Figure 1 This is a structural block diagram of the present invention;

[0015] Figure 2 This is a detailed circuit diagram of the sensor, sensing switch, voltage pulse pull-down amplifier circuit, and power supply circuit in this utility model.

[0016] Figure 3 This is a detailed circuit diagram of the voltage pull-down pulse detection circuit and constant current power supply circuit of the stair controller in this utility model.

[0017] Figure 4 This is a waveform diagram of the dual-line voltage in this utility model.

[0018] Figure labels: 1. Staircase controller; 2. Voltage pull-down pulse detection circuit; 3. Constant current power supply circuit; 4. Sensor; 5. Induction switch tube; 6. Voltage pulse pull-down amplifier circuit; 7. Power supply circuit. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example

[0021] See Figures 1 to 4 As shown, a two-wire voltage pulse pull-down stair sensor head is connected to the voltage pull-down pulse detection circuit 2 and constant current power supply circuit 3 of the stair controller 1. It includes a sensor 4, a sensing switch 5, a voltage pulse pull-down amplifier circuit 6, and a power supply circuit 7. In this embodiment, both the constant current power supply circuit and the power supply circuit are constant current power supplies, which can ensure the stability of the working current and voltage, so that the power line will not have high and low pulse changes.

[0022] In use, when the sensor is activated, the voltage pulse pull-down amplification circuit pulls down the main power line voltage momentarily, providing a strong pull-down signal to the main line to trigger the sensor. The voltage pull-down pulse detection circuit receives the momentary drop in the pulse at the moment of sensor feedback, and after circuit shaping, obtains a reliable pulse signal that is transmitted to the main control chip of the stair controller to realize the sensor's receiving function.

[0023] During assembly, the sensor is connected to the voltage pulse pull-down amplifier circuit via a sensing switch to generate a pull-down voltage pulse when there is a sense of it, and the signal is amplified by the voltage pulse pull-down amplifier circuit. The power supply circuit is connected to the power supply terminals of the sensor and the voltage pulse pull-down amplifier circuit to supply power to the sensor and the voltage pulse pull-down amplifier circuit. The power supply circuit and the voltage pulse pull-down amplifier circuit are connected to the voltage pull-down pulse detection circuit and constant current power supply circuit of the stair controller via two wires.

[0024] In this embodiment, the voltage pulse pull-down amplifier circuit includes a first capacitor C1 and a first resistor R1 connected in parallel. The sensing switch is an N-channel MOSFET. The sensor is a human body sensor, radar sensor, or sound sensor. A unidirectional diode D3 is connected in series at the input terminal of the power supply circuit to prevent reverse discharge. The unidirectional diode prevents reverse discharge operation, ensuring the stability and reliability of the power supply.

[0025] This utility model has the following positive effects: The structure of this utility model is reasonable. It adopts a double-wire connection, which can reduce the number of signal lines, which helps to reduce wiring difficulty, improve installation efficiency, and reduce installation costs. It generates pull-down pulses by using a sensor in conjunction with an inductive switch tube, amplifies the signal through a voltage pulse pull-down amplification circuit, and detects the signal through a voltage pull-down pulse detection circuit. The double wires can not only provide power but also transmit signals, making it highly applicable.

[0026] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A two-wire voltage pulse pull-down stair sensor head, connected to the voltage pull-down pulse detection circuit and constant current power supply circuit of a stair controller, characterized in that: Includes sensors, sensing switching transistors, voltage pulse pull-down amplifier circuits, and power supply circuits; The sensor is connected to the voltage pulse pull-down amplifier circuit via a sensing switch, and is used to generate a pull-down voltage pulse when there is a sensing, and the signal is amplified by the voltage pulse pull-down amplifier circuit. The power supply circuit is connected to the power supply terminal of the sensor and the voltage pulse pull-down amplifier circuit, and is used to power the sensor and the voltage pulse pull-down amplifier circuit. The power supply circuit and voltage pulse pull-down amplifier circuit are connected to the voltage pull-down pulse detection circuit and constant current power supply circuit of the stair controller via two wires.

2. The two-wire voltage pulse pull-down stair induction head according to claim 1, characterized in that: The voltage pulse pull-down amplifier circuit includes a first capacitor and a first resistor connected in parallel.

3. The two-wire voltage pulse pull-down stair induction head according to claim 1, characterized in that: The sensing switch is an N-channel MOS transistor.

4. The two-wire voltage pulse pull-down stair induction head according to claim 1, characterized in that: The sensor is a human body sensor, a radar sensor, or a sound sensor.

5. A two-wire voltage pulse pull-down stair induction head according to claim 1, characterized in that: A unidirectional diode for preventing reverse discharge is connected in series at the input terminal of the power supply circuit.

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