A DC plug-in sensor and lighting lamp

Abstract

The present invention provides a DC plug-in sensor, comprising a sensor housing, a circuit board is arranged in the sensor housing, a sensing circuit is integrated on the circuit board, the sensing circuit comprises a voltage stabilizing circuit, and a processing circuit with an infrared sensor and a photometric sensor, and three pins are arranged on the side wall of the housing, and the pins are respectively electrically connected to the positive power supply electrode of the voltage stabilizing circuit, the negative power supply electrode of the voltage stabilizing circuit, and the signal output end of the processing circuit. The DC plug-in sensor of the present invention has a compact structure and is easy to install. It can enable the lamp body to quickly switch between an ordinary lighting lamp and an induction lamp, has a low production cost, and meets the needs of different consumer groups and usage environments.

Description

Technical Field

[0001] The invention relates to an induction lamp, in particular to a DC plug-in inductor and a lighting lamp. Background Art

[0002] The induction lamp is a new type of intelligent lighting product that automatically controls the light source through the induction module. The induction lamp can automatically turn on the lighting, and can automatically delay turning off after people leave, eliminating the artificial waste of energy, extending the service life of electrical appliances, and integrating energy saving, convenience and security. In fact, it is an automatic switch control circuit, which has many types. The closing (i.e. turning on the light) methods include "voice control", "trigger", "induction", "light control", etc. The disconnection methods are basically the same, controlled by a delay circuit (automatically disconnecting after working for a period of time). Scope of application of the fully automatic human infrared induction switch This product is suitable for automatic lighting, ventilation and other purposes in corridors, stairways, warehouses, garages, basements, toilets and other places. It truly reflects the intelligence of buildings and the modernization of property management.

[0003] In the prior art, the sensor and the lamp of the induction lamp are an integrated structure, the manufacturing cost is high, the flexibility of use is poor, and it can only be used for induction control, which affects the sales market. Summary of the invention

[0004] [1] Technical issues to be solved

[0005] The technical problem to be solved by the present invention is to provide a DC plug-in sensor and an induction lamp which have a simple and compact structure, are easy and quick to install, and can quickly realize the conversion between an induction lamp and an ordinary lamp.

[0006] 【2】Technical solutions to solve the problem

[0007] The present invention provides a DC plug-in sensor, which comprises a sensor shell. A circuit board is arranged in the sensor shell. A sensing circuit is integrated on the circuit board. The sensing circuit comprises a voltage stabilizing circuit and a processing circuit with an infrared sensor and a photometric sensor. Three pins are arranged on the side wall of the shell. The pins are electrically connected to the positive power supply electrode of the voltage stabilizing circuit, the negative power supply electrode of the voltage stabilizing circuit, and the signal output end of the processing circuit respectively.

[0008] Furthermore, the positive power supply electrode of the voltage stabilizing circuit is connected to the first pin 31 as a DC power supply input terminal, the negative power supply electrode of the voltage stabilizing circuit is connected to the third pin 33, the power supply output terminal of the voltage stabilizing circuit is connected to the processing circuit and is used to power the processing circuit, and the output terminal of the processing circuit is connected to the second pin 32 as a signal output terminal for determining whether the light is on.

[0009] Furthermore, the shell includes a sub-shell 13 inserted into the lamp body when working, and a main shell 11 located outside the lamp body when working, a limiting step surface 12 is provided between the main shell and the sub-shell, and the pin is vertically installed on the rear end surface of the sub-shell; an annular groove is opened on the side wall of the sub-shell, and a sealing ring 2 is provided in the annular groove.

[0010] Furthermore, the side wall of the housing is provided with a limiting portion 121 for controlling the insertion direction thereof.

[0011] Furthermore, the side wall of the shell is provided with a first positioning portion for axial fixation after insertion.

[0012] Furthermore, the voltage stabilizing circuit includes a voltage stabilizing chip U1, a diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4, the third pin of the voltage stabilizing chip U1 is connected to the cathode of the diode D1, one end of the first capacitor C1 and one end of the second capacitor C2, the anode of the diode D1 is connected to a pin and serves as a power input end; the second pin of the voltage stabilizing chip U1 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, and the second pin of the voltage stabilizing chip U1 is connected to the processing circuit as a power supply output end; the first pin of the voltage stabilizing chip U1 is connected to the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3 and the other end of the fourth capacitor C4, and the first pin of the voltage stabilizing chip U1 is connected to another pin as a negative power supply electrode.

[0013] Furthermore, the first capacitor C1 and the third capacitor C3 are polar capacitors, the positive terminal of the first capacitor C1 is connected to the third pin of the voltage stabilizing chip U1, and the positive terminal of the third capacitor C3 is connected to the second pin of the voltage stabilizing chip U1.

[0014] Further, the processing circuit includes a processing chip U2, a sensor PIR, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first transistor Q1, a second transistor Q2, a photoresistor CDS, a first variable resistor RLUX, and a second variable resistor RTIME, and the VDD pin of the processing chip U2 is connected to the third pin of the sensor PIR, the fifth capacitor C 5, one end of the sixth capacitor C6, one end of the photoresistor CDS, one end of the third resistor R3, and the power supply end VCC of the voltage stabilizing circuit, the PIR pin of the processing chip U2 is connected to the second pin of the sensor PIR, the other end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8 and one end of the first resistor R1, the CDS pin of the processing chip U2 is connected to the other end of the photoresistor CDS, one end of the first variable resistor RLUX and the contact end of the first variable resistor RLUX, the TCL pin of the processing chip U2 is connected to the other end of the third resistor R3, the second The OUT pin of the processing chip U2 is connected to one end of the sixth resistor R6, the SENS pin of the processing chip U2 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the base of the first transistor Q1, the collector of the first transistor Q1 is connected to the other end of the seventh resistor R7, one end of the eighth resistor R8 and the base of the second transistor Q2, the other end of the first variable resistor RLUX is connected to one end of the second resistor R2, and the The first pin of the sensor PIR, the other end of the seventh capacitor C7, the other end of the eighth capacitor C8, the other end of the first resistor R1, the other end of the second resistor R2, the other end of the second variable resistor RTIME, the other end of the fifth capacitor C5, the other end of the fifth resistor R5, the emitter of the first transistor Q1, the emitter of the second transistor Q2, and the GND pin of the processing chip U2 are connected to the negative power supply electrode, the other end of the fourth resistor R4 and the other end of the eighth resistor R8 are connected to the power supply end VCC, and the collector of the second transistor Q2 is electrically connected to a pin as a signal output end.

[0015] At the same time, the present invention also provides a lamp body, wherein a lamp and a lighting circuit connected to the lamp are arranged in the lamp body, and an open-drain control circuit is arranged on the lighting circuit; a sensor slot for accommodating the DC plug-in sensor is arranged on the side wall of the lamp body, and three sockets corresponding to the pins are arranged at the bottom of the sensor slot, and the three sockets are respectively connected to the positive power supply electrode, the negative power supply electrode, and the signal input end of the open-drain control circuit; when the sensor is not installed, the lighting circuit is at a high level, and the lamp is controlled by the switch circuit at the front end of the lighting circuit; when the sensor is installed, the signal output end of the sensor circuit pulls down the level of the lighting circuit through the open-drain control circuit, and the lamp is controlled by the sensor circuit.

[0016] Furthermore, a locking device for fixing the DC plug-in inductor is provided on the side wall of the inductor slot.

[0017] 【3】Beneficial effects

[0018] The invention discloses a DC plug-in inductor, which has a compact structure and is easy to install. It can enable a lamp body to quickly switch between an ordinary lighting lamp and an induction lamp, has a low production cost, and can meet the needs of different consumer groups and usage environments. The inductor adopts a DC low-voltage power supply, which has a high safety factor. The induction circuit is optimized, and the induction effect is good. The three-pin design is convenient and quick to install, has a good connection effect, and has a low manufacturing cost. A sealing ring is arranged on the side wall of the shell, which has a good sealing effect, and the sealing ring has a certain fixing function. A limiting step surface is arranged to improve the installation reliability and stability, and can improve the structural aesthetics. A positioning structure is arranged to improve the connection between the inductor and the lamp body. The invention has the advantages of high reliability and accuracy of connection, anti-theft function, and avoids operation by unrelated personnel; the rear hidden knob is easy to adjust and is hidden in the lamp body after installation to avoid exposure, thereby improving the aesthetics and avoiding operation by unrelated personnel; the lighting lamp provided by the present invention can realize fast switching between induction lamps and ordinary lamps. When the sensor is not installed, it is directly controlled by the switch, and the sensor slot does not need to be short-circuited by inserting a plug, which reduces the production cost, improves the overall aesthetics, and is safe and reliable; a second positioning portion or locking device is provided on the side wall of the lamp body to mechanically fix the sensor, thereby improving the connection reliability and avoiding operation by unrelated personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A voltage stabilizing circuit diagram of a DC plug-in inductor of the present invention;

[0020] Figure 2 A processing circuit diagram of a DC plug-in sensor of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a DC plug-in inductor of the present invention;

[0022] Figure 4This is a schematic structural diagram of a DC plug-in inductor from another angle of the present invention;

[0023] Figure 5 It is a rear view of a DC plug-in inductor of the present invention;

[0024] Figure 6 This is a schematic diagram of the installation of a DC plug-in inductor of the present invention;

[0025] Figure 7 This is a fixed structure diagram of a first embodiment of a DC plug-in inductor of the present invention;

[0026] Figure 8 This is a fixed structure diagram of a second embodiment of a DC plug-in inductor of the present invention;

[0027] Fig. 9 This is a fixed structure diagram of a third embodiment of a DC plug-in inductor of the present invention;

[0028] Fig.10 is a circuit diagram of Embodiment 1 of the lighting lamp of the present invention;

[0029] Fig.11 This is a circuit diagram of Embodiment 2 of the lighting lamp of the present invention;

[0030] Fig.12 This is a circuit diagram of Embodiment 3 of the lighting lamp of the present invention. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] See also Figures 1 to 9The present invention provides a DC plug-in sensor, including a sensor housing, a PCB circuit board is arranged in the sensor housing, and a sensing circuit is integrated on the circuit board. The sensing circuit includes a voltage stabilizing circuit and a processing circuit with an infrared sensor and a photometric sensor. The voltage stabilizing circuit has a positive power supply terminal DC, a negative power supply terminal GND, and a power supply output terminal VCC, wherein the positive power supply terminal DC and the negative power supply terminal GND serve as power supply connection terminals of the sensor, the voltage input terminal of the processing circuit is connected to the power supply output terminal VCC of the voltage stabilizing circuit, that is, the power supply output terminal VCC of the voltage stabilizing circuit supplies power to the processing circuit, the negative electrode in the processing circuit is connected to the negative power supply GND of the voltage stabilizing circuit, the output terminal of the processing circuit serves as an electrical signal output terminal for controlling the on and off of a lamp, and three pins are arranged on the rear end face of the housing, including a first pin 31, a second pin 32, and a third pin 33. Among them, the first pin 31 is connected to the positive power supply electrode (DC) of the voltage stabilizing circuit. The circuit is a DC circuit, which is powered by the DC power (DC5-12V) of the lamp body and has a high safety factor; the third pin 33 is connected to the negative power supply electrode GND. The first pin 31 and the third pin 33 serve as the power connection ends of the sensor. The second pin 32 is connected to the sensing output end of the processing circuit for outputting the sensing electrical signal. The signal end is connected to the open-drain output control circuit on the lighting circuit in the lamp, which is used to pull the control end of the lighting circuit to a low level. The control end is used to control the on and off of the lamp. When the control end is at a low level, the lamp does not light up, and when the control end is at a high level, the lamp lights up; when the sensor detects a human body, the sensor signal outputs an electrical signal and pulls the control end to a high level, and the lamp lights up; when the sensor does not detect a human body, the control end of the lighting circuit is at a low level, and the lamp is off (off). The sensor as a whole is equivalent to a male plug with a sensor, which can lower the control end level of the lighting circuit in the lamp. A female plug (sensor slot) that can accommodate the male plug (sensor) is provided on the lamp body, which can realize a quick electrical connection and structural connection between the sensor and the lamp. When working, the sensor is inserted into the lamp body, the circuit of the sensor is connected to the circuit of the lamp, and the lighting circuit supplies power to the sensor through the first pin 31 and the third pin 33. The output signal end of the sensor is connected to the open-drain control circuit, which is used to control the turning on or off of the lamp.

[0033] The voltage stabilizing circuit and processing circuit of the sensing circuit are described in detail below;

[0034] See also Figure 1The voltage stabilizing circuit includes a voltage stabilizing chip U1, a diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4. The third pin of the voltage stabilizing chip U1 is connected to the cathode of the diode D1, one end of the first capacitor C1 and one end of the second capacitor C2. The anode of the diode D1 is connected to a pin (the first pin 31) and serves as a power input terminal (power supply positive terminal). The second pin of the voltage stabilizing chip U1 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, and the second pin of the voltage stabilizing chip U1 serves as a power supply terminal VCC and a positive terminal of the power supply. The first pin of the voltage stabilizing chip U1 is connected to the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3, and the other end of the fourth capacitor C4, and the first pin of the voltage stabilizing chip U1 is connected to another pin (the third socket 33) as a negative power supply electrode, wherein the first capacitor C1 and the third capacitor C3 are polar capacitors, the positive terminal of the first capacitor C1 is connected to the third pin of the voltage stabilizing chip U1, and the positive terminal of the third capacitor C3 is connected to the second pin of the voltage stabilizing chip U1.

[0035] See also Figure 2 The processing circuit includes a processing chip U2, a sensor PIR, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first transistor Q1, a second transistor Q2, a photoresistor CDS, a first variable resistor R LUX , the second resistor R TIME The VDD pin (first pin) of the processing chip U2 is connected to the third pin of the sensor PIR, one end of the fifth capacitor C5, one end of the sixth capacitor C6, one end of the photoresistor CDS, one end of the third resistor R3, and the power supply end VCC of the voltage stabilizing circuit. The PIR pin (second pin) of the processing chip U2 is connected to the second pin of the sensor PIR, the other end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8 and one end of the first resistor R1. The CDS pin (third pin) of the processing chip U2 is connected to the other end of the photoresistor CDS, the first variable resistor R LUX One end and the first variable resistor R LUX The contact end (P end) and the TCL pin (fourth pin) of the processing chip U2 are connected to the other end of the third resistor R3 and the second variable resistor R TIME One end and the second variable resistor R TIMEThe contact end (P end), the OUT pin (seventh pin) of the processing chip U2 is connected to one end of the sixth resistor R6, the SENS pin (sixth pin) of the processing chip U2 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the base of the first transistor Q1, the collector of the first transistor Q1 is connected to the other end of the seventh resistor R7, one end of the eighth resistor R8 and the base of the second transistor Q2, the first variable resistor R LUX The other end is connected to one end of the second resistor R2, the first pin of the sensor PIR, the other end of the seventh capacitor C7, the other end of the eighth capacitor C8, the other end of the first resistor R1, the other end of the second resistor R2, the second variable resistor R TIME The other end, the other end of the fifth capacitor C5, the other end of the fifth resistor R5, the emitter of the first transistor Q1, the emitter of the second transistor Q2, and the GND pin (fifth pin) of the processing chip U2 are connected to the negative power supply GND, the other end of the fourth resistor R4, and the other end of the eighth resistor R8 are connected to the power supply end VCC of the voltage stabilizing circuit, the collector of the second transistor Q2 is electrically connected to a pin as a signal output end, and the signal is used as a switch signal for turning the lamp on and off. The above-mentioned first variable resistor R LUX For adjusting the illumination, the second variable resistor R TIME Used to adjust the delay time.

[0036] The above is the circuit principle of the sensor. The sensor adopts direct current, and its working voltage is 5-12V, which is low voltage, safe and reliable. When the sensor is connected to the lamp, the three sockets serve as the positive pole of the power supply, the negative pole of the power supply and the induction signal output, and are connected to the driving circuit of the lamp. The induction signal output determines whether the lamp is turned on or off. When the sensor senses the human body, the induction circuit generates an induction signal, which makes the driving circuit of the lamp generate a high level and the lamp turns on. When the sensor does not sense the human body, no induction signal is generated, the driving circuit of the lamp is at a low level, and the lamp does not turn on.

[0037] The structure of the sensor is described below:

[0038] See also Figure 3-Figure 5 The sensor includes a sensor housing, which includes a sub-housing 13 inserted into the lamp body when working, and a main housing 11 located outside the lamp body when working. A PCB circuit board is provided in the housing, and the sensing circuit and the sensor are both arranged on the circuit board. A working window that allows infrared light to pass through is provided at the front end of the main housing, and the working surface of the sensor faces the working window, and the front end of the working window is a working detection area; a limiting step surface 12 is provided between the main housing and the sub-housing, and the step surface is used to axially position the sensor during installation. When the sensor is inserted into the lamp body, the limiting step surface contacts (fits) with the surface of the lamp body;

[0039] The limiting step surface can have the following two structural forms:

[0040] Embodiment 1: In the sensor housing, specifically, an annular protrusion is provided between the main housing and the auxiliary housing, and a limiting step surface is formed on one side of the annular protrusion facing the auxiliary housing (pin);

[0041] Embodiment 2: The side wall diameter of the secondary shell (inserted part) of the sensor is smaller than that of the main shell (exposed part), forming a width difference similar to a shoulder, thereby generating a limiting step surface.

[0042] The pins are vertically mounted on the rear end face of the auxiliary housing. In this embodiment, the pins include a first pin 31, a second pin 32 and a third pin 33 which are horizontally arranged, wherein the first pin 31 is connected to the positive power supply DC+ of the voltage stabilizing circuit as the positive pole of the DC input terminal, the third pin 33 is connected to the negative power supply terminal of the voltage stabilizing circuit as the negative pole, the second pin 33 is connected to the inductive output terminal of the processing circuit as the signal output terminal, and the first pin 31 and the third pin 33 are two power supply terminals, and the second pin 32 is a signal terminal for turning on the lamp; after insertion, the auxiliary housing of the housing is located in the lamp body, which is equivalent to a plug (male plug), and two recessed holes 131 are further provided on the rear end face of the auxiliary housing, and a manually adjustable knob 30 is provided in the recessed hole, the height of the knob is less than the depth of the recessed hole, and the two knobs are respectively connected to the first variable resistor R LUX , the second resistor R TIME The side wall of the concave hole is provided with a limiter 132, which contacts the limiter when the knob is rotated to a certain angle, and is used to control the rotation angle of the knob to prevent it from rotating over the stroke and damaging the rheostat. An annular groove is provided on the side wall of the auxiliary housing, and a sealing ring 2 is provided in the annular groove. When installed, the side wall of the sealing ring contacts and squeezes the side wall of the lamp body slot to achieve a sealing effect; in this embodiment, the sealing ring is arranged on the side away from the limiter step surface and is arranged near the rear end surface of the auxiliary housing.

[0043] The cross-section of the sensor shell is rectangular or circular. In order to avoid the wrong insertion angle direction, a limiting portion 121 for controlling its insertion direction is provided on the side wall of the shell. Specifically, the limiting portion is installed on the side wall of the auxiliary shell or on the limiting step surface. When it is set on the side wall of the auxiliary shell, it is located on the side close to the limiting step surface. The limiting portion is a protrusion, and a groove corresponding to the protrusion is provided in the sensor slot of the lamp body. During installation, the protrusion on the sensor is aligned with the groove on the sensor slot of the lamp body and inserted, so as to achieve quick and accurate insertion of the pin.

[0044] In order to fix the sensor after inserting it into the lamp body and avoid loosening and affecting normal operation, a first positioning part is provided on the side wall of the shell. The first positioning part is located between the positioning step surface and the sealing ring. The first positioning part is used to fix the sensor after inserting it into the rear sensor slot. At the same time, a second positioning part or locking device corresponding to the first positioning part is provided on the slot of the lamp shell. The first positioning part is a positioning hole or a card slot. The positioning hole is used for fixing with a bolt or an axially movable ejector pin. The card slot can be fixed by an axially movable lock tongue (card block).

[0045] At the same time, the present invention also provides a lighting lamp using a DC plug-in sensor, see Figure 6 , including a lamp body 4, in which a lamp and a lighting circuit connected to the lamp are arranged, and an open-drain output control circuit is arranged on the lighting circuit. The open-drain output control circuit serves as the switch control end of the lamp to control the on or off of the lighting lamp. When the sensor is not connected, the lamp is an ordinary lighting lamp, and the output end of the open-drain output control circuit is high level, and the lamp is directly controlled by the manual switch at the front end of the lamp; when the sensor is connected, the output end of the sensor pulls the output end of the open-drain output control circuit to a low level, and the lighting lamp is converted into an induction lamp, which is controlled by the sensor. When the sensor senses the human body, the sensor generates an electrical signal and makes the output of the open-drain output control circuit high level, and the lamp is on; when the human body is not sensed, the sensor does not generate an electrical signal, and the output end of the open-drain output control circuit is in a low level state, and the lamp is in a closed state. That is, when it is high level, the lamp is on, and when it is low level, the lamp is off.

[0046] The input terminal of the lighting lamp can be direct current or alternating current;

[0047] Example 1, see Fig.10When AC power is used, the lighting circuit of the lamp includes a switch circuit, a rectifier circuit, an open-drain output control circuit, a drive circuit and an LED lighting module connected in sequence, wherein the switch circuit is a wall switch, which is manually operated, the rectifier circuit converts AC power into DC power, the open-drain output control circuit is connected to three sockets in the sensor slot on the side wall of the lamp body, two of which are connected to the first pin and the third pin as the positive and negative poles of the power supply respectively, for DC power supply to the sensor, and the other socket is connected to the output end of the induced current in the sensor for pulling down the level; the drive circuit is used to drive the lighting lamp to light up, and the LED lighting The module is an LED light source; when the plug-in sensor of the present invention is inserted into the lamp body, the induction circuit in the sensor is connected to the lighting circuit in the lamp, and the induction circuit output end OUT of the sensor pulls down the level of the open-drain output control circuit; after the sensor is installed, the lamp is used as an induction lamp, the wall switch at the front end is in an open state, and the lamp is turned on and off by the sensor; when the human body is sensed, the output end of the induction circuit outputs an electrical signal, the open drain outputs a high level and turns on the lamp, and when the human body is not sensed, the open drain output is a low level and the lamp is not turned on; when the sensor is unplugged, the open drain outputs a high level, the lamp becomes an ordinary lamp, and the lamp is controlled by the wall hole switch at its front end.

[0048] Example 2, see Fig.11 When direct current is used, the lighting circuit of the lamp includes a switch circuit, an open-drain output control circuit, a DC-DC drive circuit and an LED lighting module connected in sequence, wherein the switch circuit is a wall switch, which is operated manually, and the open-drain output control circuit is connected to three jacks in the sensor slot on the side wall of the lamp body, wherein two jacks are connected to the first pin and the third pin as the positive and negative poles of the power supply respectively, for supplying direct current to the sensor, and the other jack is connected to the output end of the induced current in the sensor, for pulling down the level; the drive circuit is used to drive the lighting lamp to light up, and the LED lighting module is an LED lamp source; when the plug-in sensor of the present invention is inserted into the lamp body, the induction circuit in the sensor is connected to the lighting circuit in the lamp, and the induction circuit output end OUT of the sensor pulls down the level of the open-drain output control circuit; after the sensor is installed, the lamp is used as an induction lamp, the wall switch at the front end is in an open state, and the lamp is turned on and off by the sensor; when the human body is sensed, the output end of the induction circuit outputs an electrical signal, the open drain outputs a high level and turns on the lamp, and when the human body is not sensed, the open drain output is a low level and the lamp is not turned on; when the sensor is unplugged, the open drain outputs a high level, the lamp becomes a common lamp, and the lamp is controlled by the wall hole switch at its front end.

[0049] Embodiment 3: In this embodiment, an example of a lighting circuit of a lamp is given. Fig.12The lamp includes a processing chip U3, including a bridge rectifier diode DB1, a varistor RV1, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18 and a voltage stabilizing diode Z3, wherein the eleventh resistor R11 and the twelfth resistor R12 are connected in series to form a first resistor group, the fourteenth resistor R14 and the fifteenth resistor R15 are connected in series to form a second resistor group, and the processing chip The first pin (VDD) of U3 is connected to one end of the second resistor group, one end of the voltage zener diode Z3, one end of the thirteenth capacitor C13, and one end of the sixteenth resistor R16. The second pin (EN) of the processing chip U3 is connected to the other end of the sixteenth resistor R16. The third pin (VCP) of the processing chip U3 is connected to one end of the first resistor group, one end of the thirteenth resistor R13, and one end of the twelfth capacitor C12. The fourth pin (CS) of the processing chip U3 is connected to one end of the seventeenth resistor R17. The eighth pin (VIN) of the processing chip U3 is connected to one end of the eighteenth resistor R18. The other end of the eighteenth resistor R18 is used as a voltage source. The positive output end of the source is connected to the LED lamp, the sixth pin (DR) of the processing chip U3 is connected to the LED lamp as the negative pole of the power supply, the end of the eighteenth resistor R18 is connected to the other end of the first resistor group, the other end of the second resistor group, one end of the eleventh capacitor C11, one end of the varistor RV1, and the first end of the bridge rectifier diode DB1, the third end of the bridge rectifier diode DB1 (diagonally opposite to the first end) is connected to the other end of the varistor RV1, the other end of the eleventh capacitor C11, the other end of the thirteenth resistor R13, the other end of the twelfth capacitor C12, the other end of the voltage-stabilizing diode Z3, the other end of the thirteenth capacitor C13, the seventeenth The other end of the resistor R17 is connected and grounded, the second and fourth ends of the bridge rectifier diode DB are respectively connected to the live wire and the neutral wire of the switch, the other end of the seventeenth resistor R17 (the end not connected to the processing chip) is connected to the three sockets in the sensor slot (corresponding to the third pin) as the negative power supply electrode, the second pin end (EN) of the processing chip U3 is connected to the second socket of the sensor slot (corresponding to the second pin) as the signal end for sensor signal input; the first pin (VDD) of the processing chip U3 is connected to the first socket in the sensor slot (corresponding to the first pin) as the positive power supply electrode to provide a 5-12V DC voltage.

[0050] A sensor slot 401 for inserting the DC plug-in sensor is provided on the side wall of the lamp body. When the sensor is inserted into the slot, the lighting lamp is an induction lamp turned on by the sensor. When the sensor is pulled out, the lamp is an ordinary lamp turned on or off by a manual switch. A cover or plug is provided at the opening of the sensor slot. The cover or plug is detachable. When the sensor is not installed, it can cover the sensor slot to prevent dust or other debris from entering, while improving the aesthetics. Three sockets corresponding to the pins are provided at the bottom of the sensor slot. The three sockets are respectively connected to the positive power supply, the negative power supply, and the signal input end of the driving circuit. The positive power supply and the negative power supply provide 5-12V DC power. The signal input end is connected to the driving circuit. When the sensor senses the human body, the sensing circuit generates a sensing signal, which makes the driving circuit of the lamp generate a high level, the lamp is turned on, and the lamp is turned off after the delay switch timing is completed; when the sensor does not sense the human body, no sensing signal is generated, the driving circuit of the lamp is at a low level, and the lamp is not turned on.

[0051] A second positioning portion or a locking device is provided on the side wall of the sensor slot, corresponding to the first positioning portion of the side wall of the sensor to achieve fixation.

[0052] The structure of the second positioning portion or locking device may include the following:

[0053] Example 1: See Figure 7 In this embodiment, the first positioning portion of the side wall of the sensor is a circular concave hole, and a screw hole 402 passes through the side wall of the sensor slot of the lamp body. The screw hole is a countersunk hole. When the sensor is installed to its limiting step surface fits in the lamp body shell, the concave hole of the side wall of the sensor is coaxial with the countersunk hole, and a fixing bolt 6 is installed in the screw hole. The head of the fixing bolt 6 is sleeved into the concave hole, thereby completing the fixation of the sensor. In order to achieve the anti-theft function, the fixing bolt is an anti-theft bolt, that is, it can only be operated by special tools.

[0054] Example 2: See Figure 8 In this embodiment, the first positioning portion of the sensor is a first arc-shaped protrusion 1301, and a second arc-shaped protrusion 401 is provided on the side wall of the sensing slot of the lamp body. When the sensor is installed so that its limiting step surface is in contact with the lamp body shell, the second arc-shaped protrusion 401 is located between the first arc-shaped protrusion and the limiting step surface, and the side wall of the second arc-shaped protrusion contacts the side wall of the first arc-shaped protrusion, thereby realizing bite fixation and completing the fixation of the sensor. In this embodiment, the overlapping height difference d1 between the first positioning portion 1301 and the second positioning portion 401 is 0.5-1mm.

[0055] Example 3: See Fig. 9In this embodiment, the first positioning portion of the sensor is a concave hole or a groove or a card slot with a triangular cross-section. A locking device is provided in the side wall of the sensor slot of the lamp body, and the locking device includes an axially slidable slide bar 71, and the sliding direction of the slide bar is perpendicular to the side wall of the sensor slot. A spring 72 is provided on the lamp body shell, and the spring 72 makes the slide bar tend to move in the direction of the slot, and the head of the slide bar can extend into the sensor slot. When the sensor is installed until its limiting step surface is in contact with the lamp body shell, the slide bar is coaxial with the first positioning portion, and under the elastic force of the spring, the lock tongue of the slide bar head is stuck in the first positioning portion, thereby fixing the sensor. A concave hole 403 is provided on the side wall of the lamp body shell, and the tail of the slide bar is located in the concave hole, and a hole or hook 73 is provided at the tail of the slide bar. The sensor can be unlocked by hooking the hole or hook with a tool and pulling it outward.

[0056] Embodiment 4: Not shown in the figure, the first positioning portion of the sensor is an arc-shaped groove, and an arc-shaped protrusion corresponding to the arc-shaped groove is provided on the side wall of the sensor. When the sensor is installed so that its limiting step surface is in contact with the lamp body shell, the arc-shaped protrusion is inserted into the arc-shaped groove to complete the fixation.

[0057] The invention discloses a DC plug-in inductor, which has a compact structure and is easy to install. It can enable a lamp body to quickly switch between an ordinary lighting lamp and an induction lamp, has a low production cost, and can meet the needs of different consumer groups and usage environments. The inductor adopts a DC low-voltage power supply, which has a high safety factor. The induction circuit is optimized, and the induction effect is good. The three-pin design is convenient and quick to install, has a good connection effect, and has a low manufacturing cost. A sealing ring is arranged on the side wall of the shell, which has a good sealing effect, and the sealing ring has a certain fixing function. A limiting step surface is arranged to improve the installation reliability and stability, and can improve the structural aesthetics. A positioning structure is arranged to improve the connection between the inductor and the lamp body. The invention has the advantages of high reliability and accuracy of connection, anti-theft function, and avoids operation by unrelated personnel; the rear hidden knob is easy to adjust and is hidden in the lamp body after installation to avoid exposure, thereby improving the aesthetics and avoiding operation by unrelated personnel; the lighting lamp provided by the present invention can realize fast switching between induction lamps and ordinary lamps. When the sensor is not installed, it is directly controlled by the switch, and the sensor slot does not need to be short-circuited by inserting a plug, which reduces the production cost, improves the overall aesthetics, and is safe and reliable; a second positioning portion or locking device is provided on the side wall of the lamp body to mechanically fix the sensor, thereby improving the connection reliability and avoiding operation by unrelated personnel.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An induction lamp using a DC plug-in induction sensor, characterized in that: The invention comprises a lamp body, wherein a lamp and a lighting circuit connected to the lamp are arranged in the lamp body, and an open-drain output control circuit is arranged on the lighting circuit; a sensor slot for accommodating the insertion of a DC plug-in sensor is arranged on the side wall of the lamp body, and three sockets corresponding to the pins are arranged at the bottom of the sensor slot, and the three sockets are respectively connected to the positive power supply electrode, the negative power supply electrode, and the signal input end of the open-drain output control circuit; when the sensor is not installed, the lighting circuit is at a high level, and the lamp is controlled by the switch circuit at the front end of the lighting circuit; when the sensor is installed, the signal output end of the sensing circuit pulls down the level of the lighting circuit through the open-drain control circuit, and the lamp is controlled by the sensing circuit; the DC plug-in sensor comprises a sensor housing, and a circuit board is arranged in the sensor housing, and the sensing circuit is integrated on the circuit board, and the sensing circuit comprises a voltage stabilizing circuit, and a processing circuit with an infrared sensor and a photometric sensor, and three pins are arranged on the side wall of the housing, and the pins are respectively electrically connected to the positive power supply electrode of the voltage stabilizing circuit, the negative power supply electrode of the voltage stabilizing circuit, and the signal output end of the processing circuit.

2. The induction lamp according to claim 1, characterized in that: The positive power supply electrode of the voltage stabilizing circuit is connected to the first pin as a DC power supply input terminal, the negative power supply electrode of the voltage stabilizing circuit is connected to the third pin, the power supply output terminal of the voltage stabilizing circuit is connected to the processing circuit and is used to power the processing circuit, and the output terminal of the processing circuit is connected to the second pin as a signal output terminal for determining whether the light is on.

3. The induction lamp according to claim 1, characterized in that: The shell includes a sub-shell that is inserted into the lamp body when working, and a main shell that is located outside the lamp body when working. A limiting step surface is provided between the main shell and the sub-shell, and the pin is vertically installed on the rear end surface of the sub-shell; an annular groove is opened on the side wall of the sub-shell, and a sealing ring is provided in the annular groove.

4. The induction lamp according to claim 1, characterized in that: The side wall of the shell is provided with a limiting portion for controlling the insertion direction thereof.

5. The induction lamp according to claim 1, characterized in that: The side wall of the housing is provided with a first positioning portion for axial fixing after insertion.

6. The induction lamp according to claim 1, characterized in that: The voltage stabilizing circuit includes a voltage stabilizing chip U1, a diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3 and a fourth capacitor C4. The third pin of the voltage stabilizing chip U1 is connected to the cathode of the diode D1, one end of the first capacitor C1 and one end of the second capacitor C2. The anode of the diode D1 is connected to a pin and serves as a power input terminal. The second pin of the voltage stabilizing chip U1 is connected to one end of the third capacitor C3 and one end of the fourth capacitor C4, and the second pin of the voltage stabilizing chip U1 is connected to the processing circuit as a power output terminal. The first pin of the voltage stabilizing chip U1 is connected to the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3 and the other end of the fourth capacitor C4, and the first pin of the voltage stabilizing chip U1 is connected to another pin as a negative power supply terminal.

7. The induction lamp according to claim 6, characterized in that: The first capacitor C1 and the third capacitor C3 are polar capacitors. The positive terminal of the first capacitor C1 is connected to the third pin of the voltage stabilizing chip U1, and the positive terminal of the third capacitor C3 is connected to the second pin of the voltage stabilizing chip U1.

8. The induction lamp according to claim 1, characterized in that: The processing circuit includes a processing chip U2, a sensor PIR, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first transistor Q1, a second transistor Q2, a photoresistor CDS, a first variable resistor RLUX, and a second variable resistor RTIME. The VDD pin of the processing chip U2 is connected to the third pin of the sensor PIR and one end of the fifth capacitor C5. , one end of the sixth capacitor C6, one end of the photoresistor CDS, one end of the third resistor R3, and the power supply end VCC of the voltage stabilizing circuit, the PIR pin of the processing chip U2 is connected to the second pin of the sensor PIR, the other end of the sixth capacitor C6, one end of the seventh capacitor C7, one end of the eighth capacitor C8 and one end of the first resistor R1, the CDS pin of the processing chip U2 is connected to the other end of the photoresistor CDS, one end of the first variable resistor RLUX and the contact end of the first variable resistor RLUX, the TCL pin of the processing chip U2 is connected to the other end of the third resistor R3, the second variable resistor The OUT pin of the processing chip U2 is connected to one end of the sixth resistor R6, the SENS pin of the processing chip U2 is connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the base of the first transistor Q1, the collector of the first transistor Q1 is connected to the other end of the seventh resistor R7, one end of the eighth resistor R8 and the base of the second transistor Q2, the other end of the first variable resistor RLUX is connected to one end of the second resistor R2, and the The first pin of the sensor PIR, the other end of the seventh capacitor C7, the other end of the eighth capacitor C8, the other end of the first resistor R1, the other end of the second resistor R2, the other end of the second variable resistor RTIME, the other end of the fifth capacitor C5, the other end of the fifth resistor R5, the emitter of the first transistor Q1, the emitter of the second transistor Q2, and the GND pin of the processing chip U2 are connected to the negative power supply electrode, the other end of the fourth resistor R4 and the other end of the eighth resistor R8 are connected to the power supply end VCC, and the collector of the second transistor Q2 is electrically connected to a pin as a signal output end.

9. The induction lamp according to claim 1, characterized in that: The side wall of the sensor slot is provided with a locking device for fixing the DC plug-in sensor.

Images