CN214675773U - Low-power consumption induction circuit - Google Patents

Abstract

The technical scheme of the utility model a low-power consumption induction circuit is provided, is applied to lighting apparatus, include: the light sensing module is used for detecting the illumination intensity of the current environment and outputting a first signal; the human body sensing module is used for sensing whether a human body exists in the current environment and outputting a second signal; the battery detection module is used for detecting the current battery capacity and outputting a third signal; and the control module is respectively connected with the light sensing module, the human body sensing module and the battery detection module and controls the on-off and the brightness of the lighting equipment according to the received signals. The utility model discloses a light sense and people feel and carry out dual information acquisition, have strengthened whole induction circuit's interference killing feature, have reduced the waste of resource to adjust lighting apparatus's luminance according to battery capacity, when having realized lighting apparatus's intelligent control, it is poor still to have solved present lighting system's interference killing feature, and illuminating effect intelligence leads to the fact the technical problem of wasting of resources inadequately.

Description

Low-power consumption induction circuit

Technical Field

The utility model relates to an induction circuit control field, in particular to low-power consumption induction circuit.

Background

For some non-indoor and public lighting places, the lighting at night is usually controlled by an induction circuit to automatically turn on and off the lighting device, and the more conventional control means includes: light control, sound control, infrared induction and the like. However, the conventional control means usually causes the lighting device to be turned on under some unnecessary conditions due to the influence of external factors, thereby causing the waste of resources; moreover, most induction lamps are powered by installing an electric storage battery or a rechargeable battery and the like in some application occasions, so that the defects of insufficient capacity of the battery, insufficient illumination brightness, over-high battery power consumption and the like often occur; therefore, a low-consumption induction control circuit is needed to control the lighting device, so as to realize an intelligent lighting system with strong anti-interference capability and low consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low-power consumption sensing circuit, it is poor, the consumption is high to aim at solving present lighting apparatus sensing circuit interference killing feature, and the not enough intelligent technical problem of illuminating effect.

In order to achieve the above object, the utility model provides a low-power consumption sensing circuit is applied to lighting apparatus and includes: the light sensing module is used for detecting the illumination intensity of the current environment and outputting a first signal; the human body sensing module is used for sensing whether a human body exists in the current environment and outputting a second signal; the battery detection module is used for detecting the current battery capacity and outputting a third signal; the control module, the control module respectively with light sense module, human response module and battery detection module are connected to according to the signal control that receives lighting apparatus opens and close and luminance, include: when the first signal is a high-level signal, controlling the lighting equipment to be switched off; when the first signal is a low-level signal, controlling the lighting equipment to be turned on or off based on the second signal; and controlling the brightness of the lighting device based on the third signal.

Preferably, the control module comprises: the switch module is respectively connected with the light sensing module and the human body sensing module and outputs a level signal based on the received first signal and the second signal; and the singlechip is connected with the switch module and controls the lighting equipment to be turned on or off according to the received level signal.

Preferably, the switch module includes: the switching circuit is connected with the single chip microcomputer; one end of the switch circuit is connected with the light sensing module, and the other end of the switch circuit is connected with the human body sensing module.

Preferably, the switching circuit includes: the base electrode of the first switch is connected with the light sensing module through a resistor; a collector of the second switch is connected with the human body induction module through a diode; the collector of the first switch is connected to the base of the second switch.

Preferably, the light sensing module includes: and one end of the photosensitive circuit is connected with the base of the first switch and is simultaneously connected with an ADC detection pin of the singlechip.

Preferably, the light sensing circuit further comprises: one end of the divider resistor is connected with a common grounding terminal; and the photodiode is connected with the voltage dividing resistor in series.

Preferably, the human body sensing module includes: a diode, an anode of which is connected to a collector of the second switch; and the human body sensor is connected with the cathode of the diode and is simultaneously connected with a PIR pin of the singlechip.

Preferably, a PWM-LED pin of the single chip microcomputer is connected with the lighting equipment.

Preferably, the control module further comprises: and the controller is connected with the battery module and is used for outputting a control signal according to the third signal.

Preferably, the single chip microcomputer is connected with the controller and used for adjusting the brightness of the lighting equipment according to the received control signal.

The technical scheme of the utility model a low-power consumption induction circuit is provided, is applied to lighting apparatus, include: the light sensing module is used for detecting the illumination intensity of the current environment and outputting a first signal; the human body sensing module is used for sensing whether a human body exists in the current environment and outputting a second signal; the battery detection module is used for detecting the current battery capacity and outputting a third signal; the control module, the control module respectively with light sense module, human response module and battery detection module are connected to according to the signal control that receives lighting apparatus opens and close and luminance, include: when the first signal is a high-level signal, controlling the lighting equipment to be switched off; when the first signal is a low-level signal, controlling the lighting equipment to be turned on or off based on the second signal; and controlling the brightness of the lighting device based on the third signal. The utility model discloses a light sense and people feel carries out dual information acquisition, have strengthened whole induction circuit's interference killing feature to adjust lighting apparatus's luminance according to battery capacity, when having realized lighting apparatus's intelligent control, still realized that whole lighting system's low consumption and interference killing feature are strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of a circuit module according to an embodiment of the low power consumption sensing circuit of the present invention;

FIG. 2 is a schematic diagram of a circuit block of the control module of FIG. 1;

fig. 3 is a schematic circuit diagram of a low power consumption sensing circuit according to the present invention;

FIG. 4 is a chip diagram of the single chip microcomputer of the present invention;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Light sensing module	1	Photosensitive circuit
20	Human body induction module	2	Human sensing circuit
				30	Control module	Q5	First switch
301	MCU of single chip microcomputer	Q6	Second switch
				302	Switch module	R3	Voltage dividing resistor
303	Controller	D2	Diode with a high-voltage source
				40	Battery detection module	LT2	Photodiode
50	Lighting device	MT2	Human body sensor

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a low-power consumption induction circuit is applied to lighting apparatus 50.

Referring to fig. 1, in an embodiment of the present invention, the low power consumption sensing circuit includes: the light sensing module 10 is used for detecting the illumination intensity of the current environment and outputting a second signal;

the human body sensing module 20 is used for sensing whether a human body exists in the current environment and outputting a second signal;

the battery detection module 40 is used for detecting the current battery capacity and outputting a third signal;

the control module 30, the control module 30 is respectively connected with the light sensing module 10, the human body sensing module 20 and the battery detection module 40, and outputs a control signal according to the received signal, so as to control the on/off and the brightness of the lighting device 50, including: when the first signal is a high level signal, controlling the lighting device 50 to be turned off; when the first signal is a low level signal, controlling the lighting device 50 to be turned on or off based on the second signal; and controls the brightness of the lighting device 50 based on the third signal.

Particularly, in this embodiment, the utility model discloses a low-power consumption induction circuit is applied to lighting apparatus, includes in this low-power consumption induction circuit: the light sensing module 10 is configured to sense illumination intensity in a current environment and transmit an inductance signal corresponding to a corresponding illumination intensity signal to the control module, and the human body sensing module 20 is configured to sense whether a human body exists in the current environment, in this embodiment, human body infrared detection is used to sense the human body, and the human body infrared detection has a short-distance detection feature, so that the possibility of false triggering by a surrounding environment is low. The human body sensing module 20 processes the human body data and outputs a load control signal to the control module 30, and certainly, the detection component adopted by the human body sensing module 20 is not limited to the infrared detection device, and this embodiment is not limited herein. In addition, in this embodiment, the low power consumption sensing circuit further includes a battery detection module 40, configured to detect a remaining power of a battery in the circuit, and convert information of the remaining power into a third control signal to be transmitted to the control module 30, where the control module 30 outputs a control signal for the lighting device 50 according to the received level signals output by the light sensing module 10 and the human body sensing module 20, where the control of the lighting device 50 includes: the turning on, turning off, and brightness adjustment of the lighting device 50. The method specifically comprises the following steps: when the first signal output by the light sensing module 10 is a high inductance signal, which indicates that the illumination intensity of the surrounding environment is stronger at this time, there is no need to turn on the lighting device 50, so in this case, the control module does not turn on the lighting device no matter what kind of signal is output by the human body sensing module 20; when the first signal output by the light sensing module 10 is a low inductance signal, that is, it indicates that the illumination intensity of the surrounding environment is weak at this time, and whether to turn on the lighting device 50 at this time needs to be further determined by the second signal output by the human body sensing module 20, wherein when the second signal output by the human body sensing module 20 is a high level signal, it indicates that there is a person in the surrounding environment at this time, and the lighting device 50 needs to be controlled to turn on; when the second signal output by the human body sensing module 20 is a low level signal, otherwise, if no human exists in the surrounding environment, the lighting device 20 is controlled to be turned off; still further, before lighting, the battery remaining amount is detected by the battery detection module 40, and when the battery remaining amount is large, the brightness of the lighting device 50 may be slightly weak. When the remaining battery capacity is low, the brightness of the lighting device 50 may be slightly higher, for example, when the remaining battery capacity is greater than 60%, the brightness of the lighting device 50 may be adjusted to 50%; when the remaining battery capacity is less than 30%, the brightness of the lighting device 50 may be adjusted to 100%; this can ensure that the brightness of the lighting device 50 does not suddenly change, and can also prolong the service life of the battery.

Further, referring to fig. 2, the utility model relates to a control module 30 in low-power consumption sensing circuit includes:

a switch module 302, wherein the switch module 302 is respectively connected to the light sensing module 10 and the human body sensing module 20, and outputs a level signal based on the received first signal and the second signal;

and the single chip microcomputer 301 is connected with the switch module 302, and controls the lighting device 50 to be turned on or off according to the received level signal.

Specifically, referring to fig. 2, the control module 30 of the low power consumption sensing circuit of the present invention includes: switch module 302, this switch module 302 mainly used connect the level signal of the output of light sense module 10 and the level signal of human response module 20 output, that is to say, the utility model discloses a be light sense and human response. The level signal output by the light sensor and the level signal output by the human body sensing module are connected through the switch module 302, and the signal of the human body sensor is effective only when the light sensor detects a dark environment. The output of the photodiode LT2 is connected to the switching tube of the first stage, and the output of the switching tube of the second stage is connected to the output of the human body sensor through a diode D2. And finally, the detection port is connected to the MCU. When the light sensing tube detects a bright environment, a high level is output to the first-stage switch tube Q5, the first switch Q5 is conducted, the second-stage switch tube Q6 is not conducted, the output is high, and the diode D2 is conducted. The signal output by the switch module 302 is always at a high level, and no matter what signal is output by the human body induction module 20, the detection port of the MCU is at a high level. When the light sensing tube detects a dark environment, a low level is output to the first switch tube Q5, the first switch Q5 is turned off, the second switch tube Q6 is turned on, a low level signal is output, and the diode D2 is turned off. This is because the level of the MCU detection port is determined by the output of the motion sensor. The output of the body sensor is high, then the IO of the detection port is high, and the output of the body sensor is low, then the IO of the detection port is low. In order to ensure that misoperation cannot occur during use, the MCU performs light sensing sampling detection once when response occurs every time, and responds only when the light sensing sampling value meets the trigger condition.

Further, referring to fig. 3, fig. 3 is a schematic circuit diagram of the low power consumption sensing circuit of the present invention, wherein the switching circuit includes: a first switch Q5, wherein the base of the first switch Q5 is connected with the light sensing module 10 through a resistor; a second switch Q6, a collector of the second switch Q6 being connected to the human body sensing module 20 through a diode D2; the collector of the first switch Q5 is connected to the base of the second switch Q6.

Further, the light sensing module 10 includes: and one end of the photosensitive circuit 1 is connected with the base of the first switch Q5 and is simultaneously connected with an ADC detection pin of the singlechip 301.

Further, the photosensitive circuit 1 further includes: one end of the divider resistor R3 is connected with a common ground terminal; a photodiode LT2, the photodiode LT2 being connected in series with the voltage dividing resistor R3.

Further, the human body sensing module 20 includes: a diode D2, the anode of the diode D2 being connected to the collector of the second switch Q6; and the human body sensor MT2 is connected with the negative electrode of the diode D2 and is connected with a PIR pin of the single-chip microcomputer MCU.

Specifically, in the present embodiment, the light sensing module 10 is connected to the base of the first switch Q5, when the illumination intensity of the surrounding environment is strong, the level signal flowing through the light sensing circuit 1 is high, at this time, the current of the base of the first switch Q5 increases, and the collector current no longer increases with the increase of the base current, but does not change greatly within a certain value range, at this time, the first switch Q5 no longer amplifies the current, the voltage between the collector 3 and the emitter 2 is small, and the voltage between the collector 3 and the emitter 2 is equivalent to the on-state of the switch, at this time, because the collector 3 of the first switch is connected to the base 1 of the second switch Q6, the second switch Q6 is in the off-state at this time, and the diode D2 is turned on; at this time, no matter what signal is output by the human body induction module 20, the detection port of the single chip microcomputer is at a high level, and the lighting equipment keeps a closed state; on the contrary, when the light intensity of the surrounding environment is weak, the level signal flowing through the light sensing circuit 1 is low, and at this time, the current flowing through the base of the first switch Q5 is small, the first switch Q5 is in an off state, so that the second switch Q6 is turned on, the output is low, and the diode is turned off. At this time, the level of the MCU detection port of the single chip microcomputer is determined by the output of the human body induction module 20. That is, the output of the human body induction module 20 is high, and the output of the single chip microcomputer MCU is also high; the human body induction module 20 output is low, and the single chip microcomputer MCU output is also low. In order to ensure that no misoperation occurs in the actual use process, the single chip microcomputer MCU performs light sensation sampling detection once when response occurs every time, and the response is only performed when the light sensation sampling value meets the trigger condition.

Furthermore, a PWM-LED pin of the single chip microcomputer is connected with the lighting equipment.

Specifically, in this embodiment, one end of the photodiode LT2 is connected to the first switch Q5 through a resistor, and is also connected to the ADC detection pin of the MCU. When the photodiode LT2 detects that the ambient light is bright, the current flowing through the light sensing circuit 1 is large, the voltage across the voltage dividing resistor R3 is large, and the first switch Q5 can be turned on and the second switch Q6 can be turned off. PIR pin is high all the time, and singlechip MCU can not detect outside level change. When light sense detects that ambient light is weak, the current flowing through the photosensitive circuit 1 is small, the voltage on the divided voltage R3 is small, the conduction voltage drop of the first switch Q5 cannot be achieved, the first switch Q5 is cut off, the second switch Q6 is conducted, the diode D2 is cut off, the level change of the PIR depends on the human body sensor MT1, when the human body sensor MT1 is high, the MCU detects that IO is high, and when the MT1 is low, the MCU detects that IO is low. Therefore, the MCU of the singlechip can not be awakened under the condition that the ambient light is brighter. This ensures low power consumption. When the single-chip microcomputer MCU detects the level change of the PIR, the single-chip microcomputer MCU ensures that the level change is triggered in an environment with low illumination intensity through ADC sampling, and therefore the lighting device 50 is controlled to be on or off through the PWM _ LED.

Further, the control module 30 further includes: and the controller 303, wherein the controller 303 is connected with the battery module 40, and is configured to output a control signal according to the third signal sent by the battery module 40.

The single chip microcomputer 301 is connected to the controller 303, and is configured to adjust the brightness of the lighting device 50 according to the received control signal.

Particularly, in the present invention, in order to further reduce power consumption, before lighting, the battery level of the circuit needs to be detected, and the brightness of the lighting device is adjusted based on the battery level, in this embodiment, the battery remaining level is detected according to the battery detection module 40, and a third signal is sent to the control module according to the detection result; when the remaining battery capacity is large, controlling the brightness of the lighting device 50 to be 50%; when the battery remaining capacity is small, the luminance of the lighting device 50 is controlled to be 100%; therefore, the normal use of a user is not influenced by the excessively low brightness of the lighting equipment under the condition that the residual electric quantity of the battery is low, and the service cycle of the battery can be prolonged. In addition, referring to the circuit diagram of fig. 3, the sensitivity of the light sensing circuit can be changed by adjusting the size of the voltage dividing resistor R3 according to the actual use scenario. In actual use, the current is 20uA, for example, when the circuit is in standby, according to the test. The theoretical standby time is 8.5 years with 1500mA \ h batteries. In normal operation, the current is 60 mA. The induction is carried out 10 times per day, and the induction is calculated for 20S each time, and can be used for 450 days. The current design can achieve ultra-low power consumption.

The technical scheme of the utility model a low-power consumption induction circuit is provided, is applied to lighting apparatus, include: the light sensing module is used for detecting the illumination intensity of the current environment and outputting a sensing signal; the human body sensing module is used for sensing whether a human body exists in the current environment and outputting a sensing signal; the battery detection module is used for detecting the current battery capacity and outputting a signal according to the battery capacity; the control module, the control module respectively with light sense module, human response module and battery detection module are connected to according to the signal control that receives lighting apparatus opens and close and luminance, include: when the first signal is a high-level signal, controlling the lighting equipment to be switched off; when the first signal is a low-level signal, controlling the lighting equipment to be turned on or off based on the second signal; and controlling the brightness of the lighting device based on the third signal. The utility model discloses a light sense and people feel carries out dual information acquisition, have strengthened whole induction circuit's interference killing feature to adjust lighting apparatus's luminance according to battery capacity, when having realized lighting apparatus's intelligent control, still realized that whole lighting system's low consumption and interference killing feature are strong.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A low power consumption sensing circuit for a lighting device, comprising:

the light sensing module is used for detecting the illumination intensity of the current environment and outputting a first signal;

the human body sensing module is used for sensing whether a human body exists in the current environment and outputting a second signal;

the battery detection module is used for detecting the current battery capacity and outputting a third signal;

the control module, the control module respectively with light sense module, human response module and battery detection module are connected to according to the signal control that receives lighting apparatus opens and close and luminance, include: when the first signal is a high-level signal, controlling the lighting equipment to be switched off; when the first signal is a low-level signal, controlling the lighting equipment to be turned on or off based on the second signal; and controlling the brightness of the lighting device based on the third signal.

2. The low power consumption sensing circuit of claim 1, wherein the control module comprises:

the switch module is respectively connected with the light sensing module and the human body sensing module and outputs a level signal based on the received first signal and the second signal;

and the singlechip is connected with the switch module and controls the lighting equipment to be turned on or off according to the received level signal.

3. The low power consumption sensing circuit of claim 2, wherein the PWM-LED pin of the single chip is connected to the lighting device.

4. The low power consumption sensing circuit of claim 2, wherein the switching module comprises:

the switching circuit is connected with the single chip microcomputer;

one end of the switch circuit is connected with the light sensing module, and the other end of the switch circuit is connected with the human body sensing module.

5. The low power consumption sensing circuit of claim 4, wherein the switching circuit comprises:

the base electrode of the first switch is connected with the light sensing module through a resistor;

a collector of the second switch is connected with the human body induction module through a diode;

the collector of the first switch is connected to the base of the second switch.

6. The low power consumption sensing circuit of claim 5, wherein the human body sensing module comprises:

a diode, an anode of which is connected to a collector of the second switch;

and the human body sensor is connected with the cathode of the diode and is simultaneously connected with a PIR pin of the singlechip.

7. The low power consumption sensing circuit of claim 5, wherein the light sensing module comprises:

and one end of the photosensitive circuit is connected with the base of the first switch and is simultaneously connected with an ADC detection pin of the singlechip.

8. The low power consumption sensing circuit of claim 7, wherein the light sensing circuit further comprises:

one end of the divider resistor is connected with a common grounding terminal;

and the photodiode is connected with the voltage dividing resistor in series.

9. The low power consumption sensing circuit of claim 2, wherein the control module further comprises:

and the controller is connected with the battery detection module and used for outputting a control signal according to the third signal.

10. The low power consumption sensing circuit of claim 9, wherein the single chip is connected to the controller for adjusting the brightness of the lighting device according to the received control signal.

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