CN207753894U - The circuit that pulse Isobarically Control infrared white light automatically switches - Google Patents
The circuit that pulse Isobarically Control infrared white light automatically switches Download PDFInfo
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- CN207753894U CN207753894U CN201721746050.XU CN201721746050U CN207753894U CN 207753894 U CN207753894 U CN 207753894U CN 201721746050 U CN201721746050 U CN 201721746050U CN 207753894 U CN207753894 U CN 207753894U
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- white light
- lamp group
- infrared
- pulse
- main control
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Abstract
The utility model is related to the circuits that pulse Isobarically Control infrared white light automatically switches, including main control chip, sensing unit, switch unit, infrared lamp group and white light lamp group；Wherein, sensing unit forms input signal for detecting external environment；Main control chip, from different output port output duty cycle pwm signals, light filling is carried out to switch infrared lamp group or white light lamp group for receiving input signal, and according to input signal；Switch unit is connected or blocks according to duty ratio pwm signal for receiving duty ratio pwm signal；Infrared lamp group, for according to the conducting of switch unit or blocking and carrying out light filling or closing；White light lamp group, for according to the conducting of switch unit or blocking and carrying out light filling or closing.Infrared light filling and white light light filling mode can be automatically switched or be switched to the utility model realization, reach preferable image effect and user experience, and be not easy to be noticeable, and reduce power consumption, and kept for the longer lamp strain service life.
Description
Technical field
The utility model is related to pulse constant-voltage control circuits, more specifically refer to that pulse Isobarically Control infrared white light is automatic
The circuit of switching.
Background technology
AI artificial intelligence, image algorithm, recognition of face "smart" products in, the video acquisition ever more important of image.
High definition, color face image true to nature can be collected by way of a kind of special light filling under dark scene, lower cost.
There are two kinds of light filling acquisition imaging modalities in market at present, first, wavelength 850nm infrared lamp light fillings acquire face technology；Two
It is white light light filling acquisition face technology.Wherein, infrared light filling centre wavelength is 850nm, when using cmos imaging sensors,
Frequently general range is photosensitive limited, and color rendition is poor, generally switchs to black-and-white image.Facial detail can not restore.But confidentiality is good, mends
Light source is not easy to find.And white light light 450nm light fillings can more actually supplement face dark space or the brightness of region dark space, face image
Color rendition is really true to nature, and resolving power is strong, also can light warning effect, but easily found.Either white light light filling or red
Outer light filling mode is all to use single constant pressure and flow control mode, cannot achieve condition luminous intensity and work(as desired
Consumption is big.
Therefore, it is necessary to design a kind of circuit that pulse Isobarically Control infrared white light automatically switches, realization can automatically switch
Or infrared light filling and white light light filling mode are switched, reach preferable image effect and user experience, and be not easy to be noticeable, drops
Low-power consumption, and kept for the longer lamp strain service life.
Utility model content
The purpose of the utility model is to overcome the defects of the prior art, provide pulse Isobarically Control infrared white light and cut automatically
The circuit changed.
To achieve the above object, the utility model uses following technical scheme：Pulse Isobarically Control infrared white light is cut automatically
The circuit changed, including main control chip, sensing unit, switch unit, infrared lamp group and white light lamp group；Wherein, the sensing is single
Member forms input signal for detecting external environment；The main control chip is believed for receiving input signal, and according to input
Number, from different output port output duty cycle pwm signals, light filling is carried out to switch infrared lamp group or white light lamp group；It is described to cut
Unit is changed, for receiving duty ratio pwm signal, is connected or blocks according to duty ratio pwm signal；The infrared lamp group is used for root
According to switch unit conducting or block and carry out light filling or closing；The white light lamp group, for according to the conducting of switch unit or
It blocks and carries out light filling or closing.
Its further technical solution is：The switch unit includes the first handover module and the second handover module, and institute
It states the first handover module to connect with the infrared lamp group, second handover module is connect with the white light lamp group.
Its further technical solution is：First handover module includes first switching element and the first metal-oxide-semiconductor, master control
When high level signal in chip output duty cycle pwm signal, first switching element and the conducting of the first metal-oxide-semiconductor, infrared lamp group
It lights；When low level signal in main control chip output duty cycle pwm signal, first switching element and the first metal-oxide-semiconductor block,
Infrared lamp group is extinguished.
Its further technical solution is：The first switching element includes triode Q1, and first metal-oxide-semiconductor includes PMOS
Pipe Q3, the collector of the triode Q1 are connect with the grid of the PMOS tube Q3.
Its further technical solution is：Second handover module includes second switch element and the second metal-oxide-semiconductor, master control
When high level signal in chip output duty cycle pwm signal, second switch element and the conducting of the second metal-oxide-semiconductor, white light lamp group
It lights；When low level signal in main control chip output duty cycle pwm signal, second switch element and the second metal-oxide-semiconductor block,
White light lamp group is extinguished.
Its further technical solution is：The second switch element includes triode Q2, and the second metal-oxide-semiconductor includes PMOS tube
Q4, the collector of the triode Q2 are connect with the grid of the PMOS tube Q4.
Its further technical solution is：It is connected between the base stage and the output port of main control chip of the triode Q1 point
Piezoresistance R16.
Its further technical solution is：It is connected with biasing resistor R5 between the source electrode and drain electrode of the PMOS tube Q3.
Its further technical solution is：It is connected with biasing resistor R8 between the source electrode and drain electrode of the PMOS tube Q4.
The advantageous effect of the utility model compared with prior art is：The pulse Isobarically Control infrared white light of the utility model
The circuit of automatic switchover utilizes biography by the way that main control chip, sensing unit, switch unit, infrared lamp group and white light lamp group is arranged
The case where feeling unit detection external environment, as input signal, is input to main control chip, infrared lamp group and white light lamp group and master
The different output port connection of chip is controlled, main control chip selects corresponding output port output pulse constant pressure to believe according to input signal
Number, it controls the conducting of switch unit and blocks, realize and connect lighting or putting out for infrared lamp group or white light lamp group with the output port
It goes out, infrared light filling and white light light filling mode can be automatically switched or be switched to realization, reach preferable image effect and user's body
It tests, and is not easy to be noticeable, reduce power consumption, and kept for the longer lamp strain service life.
The utility model is further described in the following with reference to the drawings and specific embodiments.
Description of the drawings
Fig. 1 is the knot for the circuit that the pulse Isobarically Control infrared white light that the utility model specific embodiment provides automatically switches
Structure block diagram；
The circuit of switch unit, infrared lamp group 4 and white light lamp group 5 that Fig. 2 provides for the utility model specific embodiment
Schematic diagram.
Specific implementation mode
In order to more fully understand the technology contents of the utility model, with reference to specific embodiment to the skill of the utility model
Art scheme is further described and illustrates, but not limited to this.
The specific embodiment as shown in Fig. 1~2, what pulse Isobarically Control infrared white light provided in this embodiment automatically switched
Circuit, can be used in AI artificial intelligence, image algorithm, recognition of face "smart" products, such as the monitoring process of intelligent peephole
In, infrared light filling and white light light filling mode can be automatically switched or be switched to realization, reach preferable image effect and user's body
It tests, and is not easy to be noticeable, reduce power consumption, and kept for the longer lamp strain service life.Intelligent peephole is Internet of Things and image intelligent, big number
According to the intelligent product such as, human-computer interaction, intelligent peephole is especially important to the signal acquisition of recognition of face, unusual fluctuation monitoring, this light filling is clapped
The technology of taking the photograph, which can guarantee, provides image detail true to nature.Convenient for advanced technologies such as image algorithm, the analysis of big data, cloud storages, and
And white light flashes the warning of joint loudspeaker, can effectively prevent antitheft, rebellion.
As shown in Figure 1, present embodiments providing the circuit of pulse Isobarically Control infrared white light automatic switchover comprising master control
Chip 1, sensing unit 2, switch unit, infrared lamp group 4 and white light lamp group 5；Wherein, sensing unit 2, for detecting external rings
Border forms input signal；Main control chip 1, it is defeated from different output ports for receiving input signal, and according to input signal
Go out duty ratio pwm signal, light filling is carried out to switch infrared lamp group 4 or white light lamp group 5；Switch unit, for receiving duty ratio PWM
Signal is connected or blocks according to duty ratio pwm signal；Infrared lamp group 4, for being mended according to the conducting of switch unit or block
Light or closing；White light lamp group 5, for according to the conducting of switch unit or blocking and carrying out light filling or closing.
Further, in certain embodiments, above-mentioned switch unit includes that the first handover module 31 and second cut
Block 32 is changed the mold, and the first handover module 31 is connect with the infrared lamp group 4, the second handover module 32 is connect with white light lamp group 5.
It is that environment is more hidden when main control chip 1 analyzes input signal, needs the light filling mode of higher confidentiality, and control
Make the output port output duty cycle pwm signal being connect with infrared lamp group 4；It is needs when main control chip 1 analyzes input signal
When white light flashes joint loudspeaker warning demand, and the output port output duty cycle pwm signal that control is connect with white light lamp group 5.
Specifically, above-mentioned input signal is that environment is more hidden, can monitor the human body infrared less of surrounding from by sensing unit
Equal condition criterions；Above-mentioned input signal is to need white light to flash joint loudspeaker to warn demand, can be monitored from sensing unit
Temperature is higher or two infrared rays from different objects collide and wait condition criterions.
Using the different output port output duty cycle pwm signal of main control chip 1, and infrared lamp group 4 and white light lamp group 5
Be separately connected the different output port of main control chip 1, the conducting using switch unit with block, realize infrared lamp group 4 and white
The switching of light lamp group 5 is lighted and is extinguished.White light lamp group 5 and infrared lamp group 4 are in same position, and main control chip 1 is according to light sensation, red
Outer human body detecting, image algorithm etc. or shutdown mode, reach preferable image effect and user experience.
Further, in certain embodiments, the first above-mentioned handover module 31 includes first switching element and the
One metal-oxide-semiconductor, when high level signal in 1 output duty cycle pwm signal of main control chip, first switching element and the first metal-oxide-semiconductor
Conducting, infrared lamp group 4 are lighted；When low level signal in 1 output duty cycle pwm signal of main control chip, first switching element with
And first metal-oxide-semiconductor block, infrared lamp group 4 extinguish.
In addition, first switching element includes triode Q1, the first metal-oxide-semiconductor includes PMOS tube Q3, the collector of triode Q1
It is connect with the grid of PMOS tube Q3.
When being triggered after main control chip 1 receives input signal, the pin RLED_CTRL signals of main control chip 1, which are sent out, to be accounted for
Sky makes the gaps triode Q1 be connected than pwm signal.The grid of the collector C connection PMOS tube Q3 of triode Q1, as collector C
After conducting, the positions the G voltage of PMOS tube Q3 grids can be dragged down, to make the poles D of PMOS tube Q3 that power supply, infrared lamp group be connected with the poles S
4LED1, LED2, LED3, LED4, LED5 and LED6 generate constant voltage driving and light.Brightness is dimmed by RLED_CTRL signals
PWM duty cycle influences, and high level signal is effectively to shine, and low level signal is to extinguish, and color break-up dynamic frequency is in 50-100HZ ranges
More than, human eye is not easy to find.
Further, in certain embodiments, the second above-mentioned handover module 32 includes second switch element and the
Two metal-oxide-semiconductors, when high level signal in 1 output duty cycle pwm signal of main control chip, second switch element and the second metal-oxide-semiconductor
Conducting, white light lamp group 5 are lighted；When low level signal in 1 output duty cycle pwm signal of main control chip, second switch element with
And second metal-oxide-semiconductor block, white light lamp group 5 extinguish.
In addition, second switch element includes triode Q2, the second metal-oxide-semiconductor includes PMOS tube Q4, the collection of the triode Q2
Electrode is connect with the grid of the PMOS tube Q4.
When being triggered after main control chip 1 receives input signal, the pin BLED_CTRL signals of main control chip 1, which are sent out, to be accounted for
Sky makes the gaps triode Q2 be connected, the grid of the collector C connection PMOS tube Q4 of triode Q2, when collector is led than pwm signal
After logical, PMOS tube Q4 grid Gs position voltage can be dragged down, to make the poles D and the conducting power supply of the poles S of PMOS tube Q4, white light lamp group
5LED9, LED8, LED9, LED10, LED11 and LED12 generate constant voltage driving and are lit.Brightness is dimmed by BLED_CTRL
Signal PWM duty cycle influences, and high level signal is effectively to shine, and low level signal is to extinguish, and color break-up dynamic frequency is in 50-100HZ
More than range, human eye is not easy to find.
The technology that pwm pulse lights light can preferably change luminous power, reach preferable hommization demand and force
Genuine image detail, also in low-power consumption, realization preferably optimization on the lamp strain service life.
Further, in certain embodiments, it is connected between the base stage of triode Q1 and the output port of main control chip 1
There is divider resistance R16.And it is connected with power supply and divider resistance between the output port of main control chip 1 and the base stage of triode Q1
R9 provides power supply for infrared lamp group 4.
In addition, being connected with biasing resistor R5 between the source electrode and drain electrode of above-mentioned PMOS tube Q3.
Further, in certain embodiments, it is connected between the base stage of triode Q2 and the output port of main control chip 1
There is divider resistance R7.And it is connected with power supply and divider resistance between the output port of main control chip 1 and the base stage of triode Q2
R6 provides power supply for infrared lamp group 4.
It is connected with biasing resistor R8 between the source electrode and drain electrode of PMOS tube Q4.
Above-mentioned sensing unit 2 includes the sensors such as photosensitive sensor, infrared sensor.
In addition, above-mentioned main control chip 1 is MK6580.
The circuit that above-mentioned pulse Isobarically Control infrared white light automatically switches, by be arranged main control chip 1, sensing unit 2,
Switch unit, infrared lamp group 4 and white light lamp group 5, the case where detecting external environment using sensing unit 2, as input signal,
It is input to main control chip 1, infrared lamp group 4 and white light lamp group 5 are connect with the different output port of main control chip 1, main control chip 1
It selects corresponding output port to export pulse constant voltage signal according to input signal, control the conducting of switch unit and blocks, realization
Lighting or extinguishing for infrared lamp group 4 or white light lamp group 5 is connect with the output port, infrared light filling can be automatically switched or be switched to realization
And white light light filling mode, reach preferable image effect and user experience, and be not easy to be noticeable, reduces power consumption, and keep
The longer lamp strain service life.
The above-mentioned technology contents that the utility model is only further illustrated with embodiment, in order to which reader is easier to understand,
But the embodiment for not representing the utility model is only limitted to this, and any technology done according to the utility model extends or recreation,
Protected by the utility model.The scope of protection of the utility model is subject to claims.
Claims (9)
1. the circuit that pulse Isobarically Control infrared white light automatically switches, which is characterized in that including main control chip, sensing unit, cut
Change unit, infrared lamp group and white light lamp group；Wherein, the sensing unit forms input signal for detecting external environment；
The main control chip, for receiving input signal, and according to input signal, from different output port output duty cycle PWM letters
Number, carry out light filling to switch infrared lamp group or white light lamp group；The switch unit, for receiving duty ratio pwm signal, according to accounting for
Sky is connected or blocks than pwm signal；The infrared lamp group, for according to the conducting of switch unit or blocking and carrying out light filling or pass
It closes；The white light lamp group, for according to the conducting of switch unit or blocking and carrying out light filling or closing.
2. the circuit that pulse Isobarically Control infrared white light according to claim 1 automatically switches, which is characterized in that described to cut
It includes the first handover module and the second handover module to change unit, and first handover module is connect with the infrared lamp group,
Second handover module is connect with the white light lamp group.
3. the circuit that pulse Isobarically Control infrared white light according to claim 2 automatically switches, which is characterized in that described the
One handover module includes first switching element and the first metal-oxide-semiconductor, the high level letter in main control chip output duty cycle pwm signal
Number when, first switching element and the conducting of the first metal-oxide-semiconductor, infrared lamp group lights；In main control chip output duty cycle pwm signal
When low level signal, first switching element and the first metal-oxide-semiconductor block, and infrared lamp group is extinguished.
4. the circuit that pulse Isobarically Control infrared white light according to claim 3 automatically switches, which is characterized in that described the
One switch element includes triode Q1, and first metal-oxide-semiconductor includes PMOS tube Q3, the collector of the triode Q1 with it is described
The grid of PMOS tube Q3 connects.
5. according to the circuit that claim 2 to 4 any one of them pulse Isobarically Control infrared white light automatically switches, feature exists
In, second handover module include second switch element and the second metal-oxide-semiconductor, in main control chip output duty cycle pwm signal
High level signal when, second switch element and the conducting of the second metal-oxide-semiconductor, white light lamp group lights；Main control chip output duty cycle
When low level signal in pwm signal, second switch element and the second metal-oxide-semiconductor block, and white light lamp group is extinguished.
6. the circuit that pulse Isobarically Control infrared white light according to claim 5 automatically switches, which is characterized in that described the
Two switch elements include triode Q2, and the second metal-oxide-semiconductor includes PMOS tube Q4, collector and the PMOS tube of the triode Q2
The grid of Q4 connects.
7. the circuit that pulse Isobarically Control infrared white light according to claim 4 automatically switches, which is characterized in that described three
Divider resistance R16 is connected between the base stage of pole pipe Q1 and the output port of main control chip.
8. the circuit that pulse Isobarically Control infrared white light according to claim 7 automatically switches, which is characterized in that described
It is connected with biasing resistor R5 between the source electrode and drain electrode of PMOS tube Q3.
9. the circuit that pulse Isobarically Control infrared white light according to claim 6 automatically switches, which is characterized in that described
It is connected with biasing resistor R8 between the source electrode and drain electrode of PMOS tube Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746050.XU CN207753894U (en) | 2017-12-14 | 2017-12-14 | The circuit that pulse Isobarically Control infrared white light automatically switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746050.XU CN207753894U (en) | 2017-12-14 | 2017-12-14 | The circuit that pulse Isobarically Control infrared white light automatically switches |
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| Publication Number | Publication Date |
|---|---|
| CN207753894U true CN207753894U (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721746050.XU Expired - Fee Related CN207753894U (en) | 2017-12-14 | 2017-12-14 | The circuit that pulse Isobarically Control infrared white light automatically switches |
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| CN (1) | CN207753894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889318A (en) * | 2017-12-14 | 2018-04-06 | 深圳市斑点猫信息技术有限公司 | The circuit and its method that pulse Isobarically Control infrared white light automatically switches |
-
2017
- 2017-12-14 CN CN201721746050.XU patent/CN207753894U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889318A (en) * | 2017-12-14 | 2018-04-06 | 深圳市斑点猫信息技术有限公司 | The circuit and its method that pulse Isobarically Control infrared white light automatically switches |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20191214 |