CN209930380U - Self-adaptive light supplementing equipment for low-illumination environment video image acquisition - Google Patents
Self-adaptive light supplementing equipment for low-illumination environment video image acquisition Download PDFInfo
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Abstract
The utility model discloses a self-adaptation light filling equipment of low light level environment video image collection, including illuminance collection unit, the output interface of illuminance collection unit is connected to embedded treater, and embedded treater is used for receiving the real-time illuminance information that illuminance collection unit sent to calculate and generate power control signal; the output interface of the embedded processor is connected to the laser light supplementing unit, and the laser light supplementing unit is used for generating and emitting infrared light according to the power control signal so as to assist the video image acquisition unit in acquiring the video image; the utility model discloses the ambient light intensity data that sensitization module will gather gives the processor unit, and the processor unit is according to the duty cycle of the PWM ripples of ambient light intensity and light filling light source power corresponding relation real time control its output to control auxiliary light source's power can satisfy the demand that acquires high definition video image under night or low light level environment or even the totally black environment.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of image acquisition light filling equipment, especially, relate to a low light level environment video image acquisition's self-adaptation light filling equipment.
[ background of the invention ]
Along with the development of the society, the application of video monitoring is more and more extensive, and the requirement of whole day zero clearance real-time monitoring on night illumination is higher and higher, compares daytime or the environment that the illumination is sufficient, and the collection of low light level environment high definition video image is more complicated, and technical requirement is higher.
At present, video monitoring is carried out in low-illumination environments such as night, tunnels, subways, mine roads and the like, and the acquired video images are not clear due to insufficient illumination, in order to acquire high-definition video images in a low-illumination or all-black environment, a scheme of using a white light supplement lamp or an infrared LED array and adding a photoresistor is generally adopted in the market, wherein the photoresistor is used for sensing light to be used as a switching value to control the infrared LED array to be switched on and off, however, the method of using the array infrared LED or the white light supplement lamp as the supplement light source has the disadvantages of high power consumption and unshaded light source, and the video image has unclear and not clear level, more importantly, the on-off quantity generated by the photoresistor only can control the on-off of the light supplementing circuit, the light supplementing power can not change along with the change of the ambient illumination intensity, therefore, the problem of insufficient or excessive light supplement exists, and the acquired video image is blurred or the reflected light is bright.
[ Utility model ] content
The utility model aims at providing a low light level environment video image gathers's self-adaptation light filling equipment to real-time adjustment light filling power makes it change along with ambient light intensity changes, thereby reduces the not enough or excessive problem of light filling.
The utility model adopts the following technical scheme: the self-adaptive light supplementing device for low-illumination environment video image acquisition comprises a light illumination acquisition unit, wherein an output interface of the light illumination acquisition unit is connected to an embedded processor, and the embedded processor is used for receiving real-time light illumination information sent by the light illumination acquisition unit and calculating to generate a power control signal;
the output interface of the embedded processor is connected to the laser light supplementing unit, and the laser light supplementing unit is used for generating and emitting infrared light according to the power control signal so as to assist the video image acquisition unit in acquiring video images.
Furthermore, the laser light filling unit is composed of a constant current driving unit, an infrared laser tube light homogenizing sheet and a lens which are connected in sequence.
Furthermore, power supply access ends of the embedded processor, the constant current driving unit and the illuminance acquisition unit are all connected to the same voltage conversion unit, and a power supply input end of the voltage conversion unit is sequentially connected with a switch and a power supply.
Further, the power supply includes a power supply protection circuit, which includes a power supply P8;
a first pin of the power supply P8 is connected to a first pin of a control switch P9 of the switch through a diode D4;
the first pin of the power supply P8 is also grounded after being respectively connected with the transient control diodes D5 and D6;
the second pin of the power supply P8 is grounded;
the second pin of the control switch P9 is connected to the voltage conversion unit.
Further, the voltage conversion unit is composed of 1 TPS62142 chip U9, 1 TPS62143 chip U7 and peripheral circuits;
the tenth, eleventh, twelfth and thirteenth pins of U9 are all connected to the second pin of control switch P9;
the ninth pin of U9 is connected in series with a capacitor C50 and then grounded;
the fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of U9 are all grounded;
a fourth pin of the U9 is connected with a resistor R26 in series and then connected with a light intensity acquisition unit;
a fourteenth pin of the U9 is connected with a light intensity acquisition unit;
the first pin, the second pin and the third pin of the U9 are connected with an inductor L10 in series and then connected with a light illumination collecting unit;
the first pin, the second pin and the third pin of the U7 are all connected to one end of an inductor L9, and the other end of the inductor L9 is connected with the embedded processor and the laser light supplementing unit respectively;
a fourteenth pin of the U7 is respectively connected with the embedded processor and the laser light filling unit;
a fourth pin of the U7 is connected with the resistor R21 in series and then is respectively connected with the embedded processor and the laser light supplementing unit;
the fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of U7 are all grounded;
the tenth, eleventh, twelfth and thirteenth pins of U7 are all connected to the second pin of control switch P9;
the ninth pin of U7 is connected in series with capacitor C45 and then grounded.
Further, the embedded processor unit adopts an S5PV210 processor with Cortex-A8 as a core as a main control chip U1 of the system;
sixty-first and sixty-second pins of the U1 are both connected to the TPS62143 chip U7;
a first pin, a second pin and a fifth pin of the U1 are connected with the illuminance acquisition unit;
a first pin, a second pin and an eighth pin of the U1 are connected with the illuminance acquisition unit;
and a ninety-eight pin of the U1 is connected with a constant current driving unit.
Further, the illuminance acquisition unit adopts a BH1750 chip U2;
a first pin of the U2 is connected with the voltage conversion unit;
the second pin of U2 is connected with a resistor R4 in series and then is grounded;
the third pin of U2 is grounded;
a fourth pin of the U2 is connected with a resistor R3 in series and then connected with a voltage conversion unit;
the fourth pin of the U2 is connected with the third pin of a connector P1 behind a mos tube Q1 in series, and the connector P1 is plugged into the embedded processor unit;
a fifth pin of the U2 is connected with the voltage conversion unit after being connected with the resistor R1 in series;
a sixth pin of the U2 is connected with a resistor R2 in series and then connected with a voltage conversion unit;
the sixth pin of U2 is connected in series with the fourth pin of diode D1 rear connector P1.
Furthermore, a circuit of the constant current driving unit adopts a PT4115 chip U3;
a first pin of the PT4115 chip is connected with the anode of the diode D3 and one end of the inductor L1 respectively;
the other end of the inductor L1 is connected in series with a light-emitting diode D1 and a sampling resistor Rs1, and then is connected with a first pin of a connector P3, and the connector P3 is plugged into a TPS62143 chip U7;
the negative pole of the diode D3 is connected with the first pin of the connector P3;
the second pin and the fifth pin of the PT4115 chip are grounded;
the third pin of the PT4115 chip is connected with a resistor R1 in series and then is grounded;
the third pin of the PT4115 chip is also connected with the first pin of a connector P2, and the connector P2 is connected to the main control chip U1;
the fourth pin of the PT4115 chip is connected with a sampling resistor Rs1 in series and then is connected with the first pin of a connector P3;
the sixth pin of the PT4115 chip is connected to the first pin of connector P3.
The utility model has the advantages that: the utility model discloses a BH1750 sensitization chip designs the photosensitive module for gather environment illumination intensity, the photosensitive module sends the environment light intensity data of gathering to the processor unit, the processor unit controls the duty cycle of the PWM ripples of its output in real time according to environment illumination intensity and light filling light source power corresponding relation, thereby control PT 4115's output power, auxiliary light source's power promptly; utilize PT4115 chip design constant current source drive circuit to drive 940nm infrared laser pipe as auxiliary light source to become the area source through equal slide and lens to the pointolite, compare with technologies such as array infrared LED, have the outstanding advantage of low power dissipation, disguised strong, light filling power self-adaptation, can satisfy night or low light level environment and acquire high definition video image's demand even under the totally black environment.
[ description of the drawings ]
Fig. 1 is a schematic block diagram of the adaptive light supplement device for low-illumination environment image acquisition according to the present invention;
fig. 2 is a protection circuit diagram of the power supply of the present invention;
fig. 3 is a schematic diagram of a 3.3V circuit output by the voltage conversion unit in the present invention;
fig. 4 is a schematic diagram of a 5V output circuit of the voltage conversion unit of the present invention;
fig. 5 is an interface connection diagram of the embedded processor unit of the present invention respectively connected to the ambient light intensity acquisition unit and the constant current source driving unit;
FIG. 6 is a schematic circuit diagram of a BH1750 illuminance acquisition unit of the present invention;
fig. 7 is a schematic circuit diagram of the middle PT4115 constant current source driving unit of the present invention.
[ detailed description ] embodiments
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a self-adaptation light filling equipment of low light level environment video image collection, as shown in fig. 1, including illuminance collection unit 4, illuminance collection unit 4's output interface is connected to embedded treater 5, embedded treater 5 is used for receiving the real-time illuminance information that illuminance collection unit 4 sent, and calculate and generate power control signal, and send this power control signal to constant current drive unit 7, thereby it is luminous to drive infrared laser pipe 8 through constant current drive unit 7, thereby change light filling power, make light filling power remain at the optimal value all the time, thereby can gather high definition video image. The embedded processor 5 in the device changes the implementation program of the light supplement power according to the light intensity data, and can utilize the existing version v1.0 of automatic brightness adjustment (luxauto brightness), so that the duty ratio of the PWM wave output by the processing unit is automatically controlled and changed by using the ambient light intensity data acquired by the photosensitive module, thereby controlling the output power of the PT4115, namely the power of the auxiliary light source, and enabling the light supplement power to be in an optimal value consistently.
An output interface of the embedded processor 5 is connected to the laser light supplement unit 6, and the laser light supplement unit 6 is used for generating and emitting infrared light according to the power control signal so as to assist the video image acquisition unit in acquiring the video image. And the embedded processor unit 5 is used for controlling the duty ratio of the output PWM to change the fill-in power of the auxiliary lighting laser fill-in unit 6.
The laser light supplementing unit 6 is composed of a constant current driving unit 7, an infrared laser tube 8, a light homogenizing sheet 9 and a lens 10 which are connected in sequence. The light outlet of the infrared laser tube 8 is also sequentially provided with a light homogenizing sheet 9 and a lens 10. In this embodiment, the infrared laser tube 8 is 940nm, the infrared laser tube 8 is welded on an aluminum substrate, and an optical homogenizing sheet 9 and a lens 10 are installed outside the infrared laser tube 8 to diffuse the light source.
The power supply access ends of the embedded processor 5, the constant current driving unit 7 and the illuminance acquisition unit 4 are all connected to the same voltage conversion unit 3, the power supply input end of the voltage conversion unit 3 is sequentially connected with the switch 2 and the power supply 1, and the start and the stop of the equipment are controlled through the switch 2.
The embodiment of the utility model provides an in each unit all accord with the design of essence safety circuit. The circuit connection relation is as follows: the power supply 1 supplies power to the whole equipment, and the anode of the power supply 1 is connected with a power supply input interface J1 of the switch 2. The output interface J2 of the switch 2 is connected to the input interface J3 of the voltage conversion unit 3, and the voltage output interfaces J4, J5, and J6 of the voltage conversion unit 3 are respectively connected to the input interface J7 of the illumination acquisition unit 4, the input interface J8 of the embedded processor 5 (i.e., the sixty-first and sixty-second pins of the U1), and the input interface J9 of the constant current source driving unit 7 (the first pin of the connector P3). The power output interface of the constant current source driving unit 7 is connected to the infrared laser tube 8, and in this embodiment, the light emitting diode D1 in the constant current driving unit circuit diagram is the infrared laser tube 8. The data output interfaces J10 (i.e. the fourth pin of the connector P1) and J11 (i.e. the third pin of the connector P1) of the illumination acquisition unit 4 are connected to the data receiving interfaces J12 (i.e. the first two-five pins of the U1) and J13 (i.e. the first two-eight pins of the U1) of the embedded processor unit 5, and the data output interface J14 (i.e. the ninety-eight pins of the U1) of the embedded processing unit 5 is connected to the data input interface J15 (i.e. the first pin of the plug P2) of the constant current source driving unit 7.
As shown in fig. 2, which is a protection circuit diagram of a power supply, the protection circuit includes a power supply P8, a battery output voltage is 6V-8.4V, a diode D4 is connected between the positive electrode of the battery and a switch for preventing the positive and negative electrodes of the battery of the power supply P8 from being connected with each other to burn down the whole circuit, two transient suppression diodes D5 and D6 are connected between the positive electrode of the power supply and the ground for protecting precision components in an electronic circuit from being damaged by various surge pulses, and the circuit specifically includes:
a first pin (i.e., the positive power supply) of the power supply P8 is connected to a first pin of a control switch P9 of the switch 2 through a diode D4. The first pin of the power supply P8 is also connected to the transient control diodes D5 and D6, respectively, and then grounded. The second pin of power supply P8 is connected to ground (i.e., the negative pole of the power supply). The second pin of the control switch P9 is connected to the voltage conversion unit 3.
As shown in fig. 3 and 4, the circuit diagram of the voltage conversion unit 3 is composed of 1 TPS62142 chip U9, 1 TPS62143 chip U7, and peripheral circuits. As shown in fig. 3, the Buck circuit is a DC-DC Buck circuit, which outputs 3.3V voltage to power the BH1750 illuminance acquisition unit 4. Pins 10, 11, 12 and 13 of the Buck chip U9 are connected with the positive electrode of a battery pack power supply, one end of a decoupling capacitor C16 is connected with the positive electrode of the battery pack, one end of the decoupling capacitor C16 is connected with the ground, a pin 9 of the U9 is connected with one end of a capacitor C50, and the other end of the capacitor C50 is connected with the ground. Pins 5, 6, 7, 8, 15, 16 and 17 of U9 are connected with the ground, pin 4 of U9 is connected with resistor R26, pin 14 of U9 is connected with energy storage inductor L10 and resistor R26, pins 1, 2 and 3 of U9 are connected and linked with the other end of inductor L10, the other end of L10 is connected with pin 14 of U9 and one end of R26 to form an output pin, one end of C45 is connected with the output terminal, and the other end is connected with the ground.
That is, the tenth, eleventh, twelfth and thirteenth pins of U9 are all connected to the second pin of control switch P9. The ninth pin of U9 is connected in series with capacitor C50 and then to ground. The fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of U9 are all grounded. The fourth pin of the U9 is connected in series with a resistor R26 and then connected to the illuminance acquisition unit 4 (specifically, 3.3V interface, i.e., J7 interface). The fourteenth pin of the U9 is connected to the illuminance acquisition unit 4 (specifically, 3.3V interface, i.e., J7 interface). The first, second and third pins of the U9 are all connected in series with an inductor L10 and then connected to the illuminance acquisition unit 4 (specifically, a 3.3V interface, i.e., a J7 interface).
Fig. 4 is a DC-DC Buck circuit outputting 5V to power the embedded processor unit. Pins 10, 11, 12 and 13 of the Buck chip U7 are connected with the positive electrode of a battery pack power supply, one end of a decoupling capacitor C43 is connected with the positive electrode of the battery pack, and the other end of the decoupling capacitor C43 is connected with the ground. The pin 9 of U7 is connected to one end of capacitor C45, and the other end of C45 is connected to ground. The pins 5, 6, 7, 8, 15, 16 and 17 of the U7 are connected with the ground. The 4 feet of U7 are connected with resistor R21, the 14 feet of U7 are connected with energy storage inductor L9 and resistor R21, the 1, 2 and 3 feet of U7 are connected with inductor L9, the other section of L9 is connected with the 14 feet of U7 and one end of R21 to form an output pin, one end of C44 is connected with the output end, and the other end is connected with the ground.
That is, the first, second and third pins of the U7 are all connected to one end of the inductor L9, and the other end of the inductor L9 is connected to the embedded processor 5 (specifically, to the sixty-one and sixty-two pins of the U1) and the laser fill-in light unit 6 (specifically, to the first pin of the connector P3 of the constant current driving unit 7), respectively. The fourteenth pin of the U7 is connected to the embedded processor 5 (specifically, to sixty-one and sixty-two pins of the U1) and the laser fill light unit 6 (specifically, to the first pin of the connector P3 of the constant current driving unit 7), respectively.
The fourth pins of the U7 are all connected in series with the resistor R21 and then respectively connected to the embedded processor 5 (specifically connected to sixty-one and sixty-two pins of the U1) and the laser fill light unit 6 (specifically connected to the first pin of the connector P3 of the constant current driving unit 7). The fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of U7 are all grounded. The tenth, eleventh, twelfth and thirteenth pins of U7 are all connected to the second pin of control switch P9. The ninth pin of U7 is connected in series with capacitor C50 and then to ground.
Fig. 5 is a circuit diagram of the embedded processor 5, the illuminance acquisition unit, and the laser fill-in unit. The embedded processor unit 5 employs a Cortex-A8 core S5PV210 processor as the system' S master control chip U1. The 5V voltage output by the voltage conversion unit 3 has a positive electrode connected to a VDD port of the embedded processor 5 (i.e., sixty-one and sixty-two pins), and a negative electrode connected to a GND port of the embedded processor unit (i.e., sixty-three and sixty-four pins), and is used for supplying electric energy to the embedded processor 5. The I2C _ SCL2 (the first second five pin) and the I2C _ SDA2 (the first second eight pin) of the embedded processor 5 are respectively connected to an SCL _ O (the fourth pin of the connector P1) and an SDA _ O (the third pin of the connector P1) interface of the BH1750 illumination acquisition unit 4, and are configured to receive the acquired illumination intensity signal. The PWMTOUTO (i.e., the ninety-eighth pin) of the embedded processor 5 is connected to the PWM interface (i.e., the first pin of the connector P2) of the PT4115 constant current source chip circuit, and is used to change the PWM duty cycle, thereby changing the fill light source power.
That is, the sixty-first and sixty-second pins of U1 are both connected to the fourth pin of U7. The first, second and fifth pins and the second, second and eighth pins of the U1 are connected with the illuminance acquisition unit 4. The ninety-eighth interface of the U1 is connected to the laser fill-in light unit 6.
As shown in fig. 6, which is a circuit diagram of the illuminance acquisition unit, pins 1 and 3 of U2 are respectively connected to the positive and negative electrodes of the divided voltage of 3.3V, and two ends of the pull-down resistor R4 are respectively connected to pin 2 of U2 and ground. Two ends of a pull-up resistor R1 are respectively connected with the 5 pin of the U2 and the anode of the 3.3V power supply, one end of a capacitor C3 is connected with the 5 pin of the U2, and the other end of the capacitor C3 is grounded. The grid of the MOS transistor Q1 is connected with a 3.3V power supply, the source is connected with the 4 feet of the U2, the drain is grounded through a pull-up resistor R5, one end of the pull-up resistor R3 is connected with the 4 feet of the U2, and the other end of the pull-up resistor R3 is connected with the 3.3V power supply. One end of a pull-up resistor R2 is connected with the 6 pin of the U2, and the other end is connected with a 3.3V power supply. One end of the positive pole of the D1 is connected to the pin 6 of the U2, and the other end of the negative pole is connected to the output SCL _ O (i.e. the fourth pin of the connector P1) for protecting the circuit.
That is, the illuminance acquisition unit 4 employs a BH1750 chip U2. A first pin of U2 is connected to voltage conversion unit 3. The second pin of U2 is connected in series with resistor R4 and then grounded. The third pin of U2 is connected to ground. The fourth pin of U2 is connected in series with resistor R3 and then connected with + 3.3V. The fifth pin of the U2 is connected in series with the resistor R1 and then connected to the voltage converting unit 3. The sixth pin of U2 is connected in series with resistor R2 and then + 3.3V. The sixth pin of the U2 is serially connected with a diode D1 followed by the fourth pin of the connector P1, the connector P1 is plugged into the embedded processor unit 5, the 4-pin SCL0 of the P1 is connected with the 125-pin I2C _ SCL2 of the processor, and the 3-pin SDA0 of the P1 is connected with the 128-pin I2C _ SDA2 of the processor.
As shown in fig. 7, a constant current source driving circuit is provided, in which a PT4115 chip U3 is used, the 6-pin of U3 is connected to the positive electrode of the power supply, and the 2-and 5-pins of U3 are grounded. The sampling resistors Rs1, Rs2 and Rs3 are connected in parallel, one end of each sampling resistor is connected with the 4 pin of the U3, and the other end of each sampling resistor is connected with the 6 pin of the U3. The anode of the light emitting diode D1 (i.e. infrared laser tube) is connected with the 4 feet of U3, the cathode is connected with one end of the inductor L1, the other end of the inductor L1 is connected with the anode of the diode D3, and the cathode of the diode D3 is connected with the 6 feet of U3. The anode of D3 is connected with the pin of U3, the pin 3 of U3 is grounded through pull-down resistor R1, the pin 3 of U3 is the output PWM wave, and is connected to the first pin of connector P2.
That is, the first pin of the PT4115 chip U3 is connected to the anode of the diode D3 and one end of the inductor L1, respectively. The other end of the inductor L1 is connected in series with a light emitting diode D1 and a sampling resistor Rs1, and then is connected with a first pin of a connector P3, the connector P3 is plugged into a TPS62143 chip U7, and the negative electrode of the diode D3 is connected with a first pin of a P3. The second and fifth pins of the PT4115 chip are grounded. The third pin of the PT4115 chip is connected in series with a resistor R1 and then grounded. The third pin of the PT4115 chip is also connected to the first pin of connector P2, and connector P2 is connected to the main control chip U1. The fourth pin of the PT4115 chip is connected in series with a sampling resistor Rs1 and then connected to the first pin of the P3. The sixth pin of the PT4115 chip is connected with the first pin of the P3.
The utility model discloses the low power dissipation, adopt single infrared laser pipe as the light filling light source, with array LED, compare the low power dissipation, it is disguised to have, the light filling light source adopts the laser source of 940nm wavelength, be an invisible light, the unicity is good, the energy is concentrated, light filling power self-adaptation has, embedded treater utilizes the light intensity signal that the sensitization module gathered to come the duty cycle of real-time control light filling circuit input PWM ripples, thereby change light filling power, can solve night or low-light level environment video image collection light filling light source consumption height, the disguise is poor, the image level is indistinct, the problem of unable self-adaptation regulation power.
Claims (8)
1. The self-adaptive light supplementing device for low-illumination environment video image acquisition is characterized by comprising a light illumination acquisition unit (4), wherein an output interface of the light illumination acquisition unit (4) is connected to an embedded processor (5), and the embedded processor (5) is used for receiving real-time light illumination information sent by the light illumination acquisition unit (4) and calculating to generate a power control signal;
the output interface of the embedded processor (5) is connected to a laser light supplementing unit (6), and the laser light supplementing unit (6) is used for generating and emitting infrared light according to the power control signal so as to assist the video image acquisition unit in acquiring video images.
2. The adaptive light supplement device for low-illumination environment video image acquisition according to claim 1, wherein the laser light supplement unit (6) is composed of a constant current driving unit (7), an infrared laser tube (8), a light homogenizing sheet (9) and a lens (10) which are connected in sequence.
3. The adaptive light supplement device for low-illumination environment video image capture according to claim 2, wherein power access terminals of the embedded processor (5), the constant current driving unit (7) and the illuminance capture unit (4) are all connected to a same voltage conversion unit (3), and a power input terminal of the voltage conversion unit (3) is sequentially connected to the switch (2) and the power supply (1).
4. The adaptive low-light ambient video image capture supplementary lighting device of claim 3, wherein the power supply (1) comprises a power supply protection circuit comprising a power supply P8;
a first pin of the power supply P8 is connected to a first pin of a control switch P9 of the switch (2) through a diode D4;
the first pin of the power supply P8 is also connected with the transient control diodes D5 and D6 respectively and then grounded;
a second pin of the power supply P8 is grounded;
the second pin of the control switch P9 is connected with a voltage conversion unit (3).
5. The adaptive low-illumination environment video image capture supplementary lighting device according to claim 4, wherein the voltage conversion unit (3) is composed of 1 TPS62142 chip U9, 1 TPS62143 chip U7 and peripheral circuits;
the tenth, eleventh, twelfth and thirteenth pins of the U9 are all connected to the second pin of the control switch P9;
the ninth pin of the U9 is connected with the rear ground of a capacitor C50 in series;
the fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of the U9 are all grounded;
the fourth pin of the U9 is connected with a resistor R26 in series and then connected with the illuminance acquisition unit (4);
a fourteenth pin of the U9 is connected with the illuminance acquisition unit (4);
the first pin, the second pin and the third pin of the U9 are connected with an inductor L10 in series and then connected with the illuminance acquisition unit (4);
the first pin, the second pin and the third pin of the U7 are all connected to one end of an inductor L9, and the other end of the inductor L9 is connected with the embedded processor (5) and the laser supplementary lighting unit (6) respectively;
a fourteenth pin of the U7 is respectively connected with the embedded processor (5) and the laser light filling unit (6);
a fourth pin of the U7 is connected with the embedded processor (5) and the laser supplementary lighting unit (6) in series after being connected with a resistor R21;
the fifth, sixth, seventh, eighth, fifteenth, sixteenth and seventeenth pins of the U7 are all grounded;
the tenth, eleventh, twelfth and thirteenth pins of the U7 are all connected to the second pin of the control switch P9;
the ninth pin of the U7 is connected in series with a capacitor C45 and then grounded.
6. The adaptive low-light-level ambient video image capture supplementary lighting device of claim 5, wherein the embedded processor (5) employs a Cortex-A8 kernel S5PV210 processor as a main control chip U1 of the system;
sixty-first and sixty-second pins of the U1 are connected to the TPS62143 chip U7;
the first pin and the second pin of the U1 are connected with the illuminance acquisition unit (4);
the first, second and eighth pins of the U1 are connected with the illuminance acquisition unit (4);
and a ninety-eight pin of the U1 is connected with a constant current driving unit (7).
7. The adaptive light supplement device for low-illuminance environment video image acquisition according to claim 6, wherein the illuminance acquisition unit (4) employs a BH1750 chip U2;
a first pin of the U2 is connected with the voltage conversion unit (3);
the second pin of the U2 is connected with the rear ground of the resistor R4 in series;
the third pin of the U2 is grounded;
the fourth pin of the U2 is connected with a resistor R3 in series and then connected with the voltage conversion unit (3);
the fourth pin of the U2 is connected with the third pin of a connector P1 behind a mos tube Q1 in series, and the connector P1 is plugged into the embedded processor (5);
a fifth pin of the U2 is connected with the voltage conversion unit (3) after being connected with a resistor R1 in series;
the sixth pin of the U2 is connected with a resistor R2 in series and then connected with the voltage conversion unit (3);
the sixth pin of the U2 is connected in series with the fourth pin of the diode D1 rear connector P1.
8. The adaptive low-illuminance ambient video image capturing light supplement device according to claim 7, wherein a circuit of the constant current driving unit (7) adopts a PT4115 chip U3;
a first pin of the PT4115 chip is respectively connected with the anode of a diode D3 and one end of an inductor L1;
the other end of the inductor L1 is connected in series with a light emitting diode D1 and a sampling resistor Rs1, and then is connected with a first pin of a connector P3, and the connector P3 is plugged into a TPS62143 chip U7;
the cathode of the diode D3 is connected with the first pin of the connector P3;
the second pin and the fifth pin of the PT4115 chip are grounded;
the third pin of the PT4115 chip is connected with a resistor R1 in series and then is grounded;
the third pin of the PT4115 chip is also connected with the first pin of a connector P2, and the connector P2 is connected to the main control chip U1;
the fourth pin of the PT4115 chip is connected with a sampling resistor Rs1 in series and then connected with the first pin of the connector P3;
the sixth pin of the PT4115 chip is connected to the first pin of the connector P3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921035378.XU CN209930380U (en) | 2019-07-04 | 2019-07-04 | Self-adaptive light supplementing equipment for low-illumination environment video image acquisition |
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| CN117617097A (en) * | 2023-11-06 | 2024-03-01 | 廊坊市园林绿化事务中心 | Intelligent maintenance system and method for special landscape |
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