CN107222946A - Intelligent desk lamp based on magnetoresistance - Google Patents
Intelligent desk lamp based on magnetoresistance Download PDFInfo
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- CN107222946A CN107222946A CN201710302113.0A CN201710302113A CN107222946A CN 107222946 A CN107222946 A CN 107222946A CN 201710302113 A CN201710302113 A CN 201710302113A CN 107222946 A CN107222946 A CN 107222946A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention belongs to intelligent desk lamp field, specifically a kind of intelligent desk lamp based on magnetoresistance, including：Control unit, for the control core as the desk lamp；Bluetooth unit, for being connected with mobile phone wireless；Intelligent-induction unit, for testing electromagnetic wave around the desk lamp；LED unit, for being used as the desk lamp light source；The bluetooth unit, intelligent-induction unit and LED unit are electrically connected with control unit respectively.The intelligent desk lamp of the detectable surrounding electromagnetic wave of the present invention, and desk lamp is controlled by the change of electromagnetic wave.
Description
Technical field
The invention belongs to intelligent desk lamp field, specifically a kind of intelligent desk lamp based on magnetoresistance.
Background technology
Intelligent desk lamp is opening switch after the activity using intelligent-induction sensor detection user, after user leaves
Closing switch, it is achieved thereby that the effect of energy-conservation.
Popular intelligent desk lamp wide variety, multiple functional in the market, the intelligent-induction sensor mainly used is more
For light-sensitive element, infrared components (such as：Infrared thermal release electric).Light-sensitive element is by detecting the intensity of light in environment to the bright of light
Degree makes corresponding adjustment.Human body pyroelectricity is mainly the infrared ray of sensing human body, judges whether there is physical activity in environment with this,
So that light changes.The target that above-mentioned intelligent desk lamp of the prior art is sensed is single, therefore causes intelligent desk lamp
Function it is also single.
The content of the invention
The technical problem to be solved in the present invention is that there is provided a kind of multi-functional and can detect the intelligence of surrounding electromagnetic wave
Desk lamp, the specifically intelligent desk lamp based on magnetoresistance.
Intelligent desk lamp based on magnetoresistance involved in the present invention, it is characterised in that including：Control unit, for making
For the control core of the desk lamp；Bluetooth unit, for being connected with mobile phone wireless；Intelligent-induction unit, for testing described
Electromagnetic wave around lamp；LED unit, for being used as the desk lamp light source；The bluetooth unit, intelligent-induction unit and LED unit
It is electrically connected with respectively with control unit.
Further, described control unit includes starting the mode selection module of each mode of operation of intelligent desk lamp, institute
Stating mode selection module includes all light submodule, energy-conservation submodule and testing mobile phone submodule；During all light submodule work,
The normal all light work of intelligent desk lamp；During the energy-conservation submodule work, the intelligent desk lamp can adjust lamplight brightness in real time；
During the testing mobile phone submodule work, the intelligent desk lamp can provide light prompting；The intelligent-induction unit is by magnetosensitive electricity
Hinder sensor to constitute, the mistor sensor includes sense circuitry modules and signal processing module.
Further, the sense circuitry modules include Hui Sidun bridge-type mistor sensors；The signal transacting
Module includes common mode rejection circuit, signal amplification circuit and voltage comparator circuit.
Yet further, in the Hui Sidun bridge-types mistor sensor, including two pairs of bridge arms, two in identical bridge arm
Individual mistor sensitive direction is identical, opposite with respect to mistor sensitive direction in bridge arm；Have a pair in two pairs of bridge arms
Bridge arm is shielded using soft magnetic materials.
Also further, described control unit is used as processing core chip using arduino chips；The bluetooth unit with
HC-05 bluetooth modules are used as core processing module；The LED unit is made up of multiple LED lamp beads, the driving of the LED lamp bead
Chip is PT4115 chips.
Further, the mistor sensor includes VCC ends, GND ends and voltage output end；The voltage output
End is connected with the A/D pins of arduino chips；The PWM functional pins of the arduino chips and the DIM ends of PT4115 chips
Mouth is connected；TXD the and RXD ports of the HC-05 bluetooth modules and arduino chips mutually correspond to connection.
Preferably, 11 pin of the arduino chips are connected with 12 pin, and 11 pin of the arduino chips pass through one
The GND at single-pole double-throw switch (SPDT) VCC ends respectively with HC-05 bluetooth modules, the VCC ends of intelligent-induction unit and arduino chips
End is connected；The moved end of the single-pole double-throw switch (SPDT) is connected with 11 pin of arduino chips, and one of the single-pole double-throw switch (SPDT) is not
Moved end is connected with the VCC ends of HC-05 bluetooth modules and the VCC ends of intelligent-induction unit respectively, the single-pole double-throw switch (SPDT) it is another
One not moved end be connected to resistance R3 one end, the other end of the resistance R3 passes through the GND of the 5th switch and arduino chips
End is connected.
Preferably, the single-pole double-throw switch (SPDT) another not moved end be also respectively connected with the 3rd switch and the 4th switch one
End connection, the other end of the 3rd switch connects the VCC ends of intelligent-induction unit and one end of the 6th switch, described the respectively
The other end of six switches is connected with resistance R3 one end, and the other end of the resistance R3 is also connected with 2 pin of arduino chips；
The other end of 4th switch is connected with the VCC ends of intelligent-induction unit and resistance R1 one end respectively, the resistance R1's
The other end is connected with 9 pin of arduino chips and resistance R2 one end respectively, the other end ground connection of the resistance R2；The list
During the one not moved end of the connection of double-pole double throw switch, the mobile phone is worked by bluetooth unit come control model selecting module,
Any submodule is selected to work；Another not moved end and described 3rd switch connection described in the connection of the single-pole double-throw switch (SPDT)
When, the energy-conservation submodule work；Described in the connection of the single-pole double-throw switch (SPDT) another not moved end and it is described 4th switch connect
When logical, all light submodule work；4th switch is rotary switch, can be controlled by the switch of rotation the 4th described
The PWM outputs of arduino chips, so as to adjust lamplight brightness manually；The connection of the single-pole double-throw switch (SPDT) is described another
Individual not moved end and the 5th switch and the 6th switch are simultaneously when connecting, and the testing mobile phone submodule works.
In the above-mentioned technical solutions, the LED unit includes PT4115 chips, sustained diode 1, ballast inductance L1, electricity
Appearance, inductance, LED lamp bead and power supply；The VIN ends of the PT4115 chips connect the negative pole and inductance of sustained diode 1 respectively
One end, the positive pole of the sustained diode 1 is connected with the SW ends of PT4115 chips, and the other end of the inductance passes sequentially through LED
Lamp bead and ballast inductance L1 are connected with SW ends；The CSN ends of the PT4115 chips are connected to the other end of inductance, the inductance
One end is also connected with power supply, and the power supply also passes through capacity earth.
Further, the ballast inductance L1 is 68 μ H, and the sustained diode 1 is Schottky diode SS24.
The electronic product that human body includes some similar mobile phones can produce electromagnetic wave, and mistor is detected on this condition
Electromagnetic intensity changes in environment, causes the light of desk lamp to make respective change.Magneto-dependent sensor is to utilize semiconductor material
The senser element that free electron or hole in material change this characteristic of its direction of motion with magnetic field and be made.Magneto-dependent sensor one
As be used to detect that the presence in magnetic field, change, direction and magnetic field are strong and weak, and can caused by changes of magnetic field physical quantity.At present
Sensor various types, such as hall device, magnetodiode, triode, semi-conductor type mistor device, and
AMR, GMR magneto-dependent sensor etc..Intelligent-induction functions of modules realizes and relied on the basis of magnetoresistance that magnetoresistance is imitated
Should be that current－carrying conductor is placed in external magnetic field, in addition to producing Hall effect, the phenomenon that its resistance can also change with magnetic field.In temperature
When spending constant, in the range of low-intensity magnetic field, magnetic resistance and magnetic induction intensity square are directly proportional.For only having electronics to participate in conduction most
Simple situation, the expression formula that theory releases magnetoresistance is：
ρB=ρ0(1+0.273μ2B2)
In formula：B is magnetic induction intensity, and μ is electron mobility, ρ0It is the resistivity under zero magnetic field, ρBIt is B for magnetic field intensity
When resistivity.
By above-mentioned expression formula it is recognised that when being changed in magnetic field, the resistance value of mistor becomes into square multiple
Change, this condition is the invention provides theoretical foundation.
In scheme of the present invention, this desk lamp devises two kinds of control modes：Manual control, controlled in wireless.Utilize
Selecting switch selects corresponding mode.Under the pattern of controlled in wireless, it is necessary first to open mobile phone A PP and appeared on the stage by bluetooth connection
Lamp, and then the mode of operation of desk lamp can be controlled：Energy saver mode, all light pattern, mobile phone reminding pattern.If selecting energy saver mode,
Control system starts the electromagnetic intensity that intelligent sensing module monitors surrounding environment in real time, if learner leaves, necessarily causes electricity
Magnetic wave remitted its fury, so that the brightness of automatic adjusument lamp.If selecting mobile phone reminding pattern, control system starts intelligent sensing mould
Block monitors the electromagnetic intensity of surrounding environment in real time, if monitor mobile phone electromagnetic intensity for a long time set threshold value it
On, represent that learner is playing mobile phone always, now the light meeting fast blink of desk lamp, learner is reminded with this.In all light mould
Under formula, desk lamp is under non-power save mode, and its brightness will not change with environment, but can be by the manual stepless-adjustments of APP
Brightness is saved to find most suitable lightness environment.
When selecting switch points to manual gear, user selects corresponding pattern using the button set on desk lamp, wherein
Light in each mode is still adjustable.The present invention has done hands ready in control aspect, and convenient use person's operation is not having such as
In the case of having band mobile phone, manual mode can be used；Got up at night, in order to avoid danger, it is possible to use wireless mode is first
Open light；Or students sleep before forget to turn off the light, can more easily be turned off the light without leaving the bed with mobile phone.The measure makes
Obtain the scope of application of the invention and become big, the crowd that is applicable becomes extensively, the elasticity of product is more preferably.
The desk lamp can detect whether user is using mobile phone for a long time, and reminded by blinking light, this
Supervisory role is served using mobile phone in study to current adolescent student custom, the health student of vast student is lived
And good study habit has facilitation.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation of intelligent-induction unit in the present invention；
Fig. 3 is the structural representation of Hui Sidun bridge-type mistor sensors in the present invention；
Fig. 4 is circuit diagram of the invention；
Equivalent circuit diagrams of the Fig. 5 for the present invention when automatically controlling；
Fig. 6 is the circuit diagram of LED unit in the present invention；
Fig. 7 is workflow diagram of the invention；
Fig. 8 is the structural representation of mode selection module in the present invention.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now compare accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figure 1, the intelligent desk lamp of the present invention based on magnetoresistance, including：Control unit 101, bluetooth list
Member 102, intelligent-induction unit 103 and LED unit 104, the bluetooth unit, intelligent-induction unit and LED unit are respectively and control
Unit processed is electrically connected with.
As shown in 4, Fig. 5 and Fig. 8, control unit 101, for the control core as the desk lamp.Described control unit
Include starting the mode selection module of each mode of operation of intelligent desk lamp, the mode selection module include all light submodule,
Save submodule and testing mobile phone submodule；During all light submodule work, the normal all light work of intelligent desk lamp；It is described
When saving submodule work, the intelligent desk lamp can adjust lamplight brightness in real time；It is described during the testing mobile phone submodule work
Intelligent desk lamp can provide light prompting.
Described control unit 101 is used as processing core chip using arduino chips；11 pin of the arduino chips with
12 pin are connected, and 11 pin of the arduino chips open VCC of 1 pass respectively with HC-05 bluetooth modules by a single-pole double throw
End, the VCC ends of intelligent-induction unit are connected with the GND ends of arduino chips；The moved end of the single-pole double-throw switch (SPDT) 1 with
11 pin of arduino chips are connected, one of the single-pole double-throw switch (SPDT) 1 not VCC ends of moved end respectively with HC-05 bluetooth modules
It is connected with the VCC ends of intelligent-induction unit 103, another of the single-pole double-throw switch (SPDT) 1 is not connected to the one of resistance R3 in moved end
End, the other end of the resistance R3 is connected by the 5th switch with the GND ends of arduino chips.
The single-pole double-throw switch (SPDT) another not moved end be also respectively connected with the 3rd switch 3 and the 4th switch 4 one end connect
Connect, the other end of the 3rd switch 3 connects the VCC ends of intelligent-induction unit and one end of the 6th switch 6, the described 6th respectively
The other end of switch 6 is connected with resistance R3 one end, and the other end of the resistance R3 is also connected with 2 pin of arduino chips；Institute
The other end for stating the 4th switch 4 is connected with the VCC ends of intelligent-induction unit and resistance R1 one end respectively, and the resistance R1's is another
One end is connected with 9 pin of arduino chips and resistance R2 one end respectively, the other end ground connection of the resistance R2.
Bluetooth unit 102, for being connected with mobile phone wireless；The bluetooth unit using HC-05 bluetooth modules as core at
Manage module.
As shown in Fig. 2 to 5, intelligent-induction unit 103, for testing electromagnetic wave around the desk lamp；The intelligent-induction
Unit is made up of mistor sensor, and the mistor sensor includes sense circuitry modules 1031 and signal processing module
1032.The sense circuitry modules include Hui Sidun bridge-type mistor sensors；The signal processing module presses down including common mode
Circuit processed, signal amplification circuit and voltage comparator circuit.In the Hui Sidun bridge-types mistor sensor, including two pairs of bridges
Two mistor sensitive directions in arm, identical bridge arm are identical, opposite with respect to mistor sensitive direction in bridge arm；It is described
There are a pair of bridge arms to be shielded using soft magnetic materials in two pairs of bridge arms.Two R1 or two R2 are shielded with soft magnetic materials, this
The design of sample will then play a part of magnetic flux convergence to other arm resistance, when improving the measurement Weak magentic-field change of sensor
The linearity.
The mistor sensor includes VCC ends, GND ends and voltage output end；The voltage output end and arduino
The A/D pins of chip are connected；The PWM functional pins of the arduino chips are connected with the DIM ports of PT4115 chips；It is described
TXD the and RXD ports of HC-05 bluetooth modules and arduino chips mutually correspond to connection.
Described magneto-dependent sensor output voltage signal and external magnetic field intensity are into a quadratic relationship, in chip arduino
Obtain returning to int offsets 0~1023 after analog voltage, the return value is directly used in the dutycycle output of control PWM pins, right
Should be related to it is 5/1023V, so the present invention can regulate and control the brightness of light with real time stepless.
As shown in Figs. 4-6, LED unit 104, for being used as the desk lamp light source；The LED unit has multiple LED lamp beads
Composition, the driving chip of the LED lamp bead is PT4115 chips.The LED unit includes PT4115 chips, fly-wheel diode
D1, ballast inductance L1, electric capacity, inductance, LED lamp bead and power supply；The VIN ends of the PT4115 chips connect fly-wheel diode respectively
D1 negative pole and one end of inductance, the positive pole of the sustained diode 1 are connected with the SW ends of PT4115 chips, the inductance
The other end passes sequentially through LED lamp bead and ballast inductance L1 is connected with SW ends；The CSN ends of the PT4115 chips are connected to inductance
The other end, one end of the inductance is also connected with power supply, and the power supply also passes through capacity earth.The ballast inductance L1 is 68 μ
H, the sustained diode 1 is Schottky diode SS24.
Described LED light source circuit is designed based on chip PT4115, can be direct by DC voltage using the chip
Stable constant current output is converted into, by the DIM ends on PT4115 chips, PWM light modulations are carried out.Control input pulse duty factor makes
Obtain the bright dark change frequencies of LED and be more than 120Hz, using the persistence of vision effect of human eye, realize the smooth change of light.
As shown in figs. 4 and 7, when the intelligent desk lamp enters automatic mode, the connection institute of the single-pole double-throw switch (SPDT)
A not moved end is stated, the mobile phone is worked by bluetooth unit come control model selecting module, select any submodule work.It is blue
The power supply of tooth unit 102 and intelligent-induction unit 103 is both turned on.Pass through bluetooth unit 102 in mobile phone A PP connections, you can carry out
Radio communication, user sends instruction into control unit 101 again, and signal is read from intelligent-induction unit 103, and will output
Value sends LED unit 104 to, realizes radio control operations.
During all light submodule work, the normal all light work of intelligent desk lamp.
During the energy-conservation submodule work, the intelligent desk lamp can adjust lamplight brightness in real time.Energy-conservation submodule makes intelligence
Sensing unit 103 monitors intelligent desk lamp ambient magnetic field strength, and whether the magnetic field induction people sent according to human body leaves or close to intelligence
Energy desk lamp, so as to adjust lamplight brightness in real time.
During the testing mobile phone submodule work, the intelligent desk lamp can provide light prompting.Described mobile phone reminding mould
Formula measures magnetic field intensity of the mobile phone during different uses in actual experiment, and one is calculated rationally by reckoning
Average threshold, measured magnetic field intensity is higher than the threshold value for a long time in this mode can cause program to enter interruption, draw to PWM
Pin is with 2Hz rate-adaptive pacemaker pulse, i.e. the overall height pulse of 0.5s and 0.5s complete low pulse.The design can produce strong vision
Effect, causes the attention of user, reminds its reduction to use mobile phone.
Mobile phone magnetic field around the induced intelligent desk lamp of intelligent-induction unit 103, control unit 101 is by intelligent-induction unit
103 information returned are compared with the threshold value, so as to judge whether to need light prompting.
When the desk lamp enters manual mode, another not moved end described in the connection of the single-pole double-throw switch (SPDT) 1；Prevent
Bluetooth and transducing part are powered always at work, can play the effect of energy-conservation.
When 3rd switch 3 is connected, the energy-conservation submodule work.
When 4th switch 4 is connected, all light submodule work；4th switch is rotary switch, passes through rotation
Turning the 4th switch 4 can control the PWM of the arduino chips to export, so as to adjust lamplight brightness manually；
5th switch 5 is connected with the 6th switch 6 simultaneously when, the testing mobile phone submodule work.
The lower end of first switch 1 is the master switch controlled manually, under any pattern, it is necessary to first open first switch 1,
Therefore whole circuit can be played a protective role.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (10)
1. a kind of intelligent desk lamp based on magnetoresistance, it is characterised in that including：
Control unit, for the control core as the desk lamp；
Bluetooth unit, for being connected with mobile phone wireless；
Intelligent-induction unit, for testing electromagnetic wave around the desk lamp；
LED unit, for being used as the desk lamp light source；
The bluetooth unit, intelligent-induction unit and LED unit are electrically connected with control unit respectively.
2. the intelligent desk lamp according to claim 1 based on magnetoresistance, it is characterised in that described control unit includes opening
The mode selection module of each mode of operation of intelligent desk lamp is moved, the mode selection module includes all light submodule, energy-conservation
Module and testing mobile phone submodule；
During all light submodule work, the normal all light work of intelligent desk lamp；
During the energy-conservation submodule work, the intelligent desk lamp can adjust lamplight brightness in real time；
During the testing mobile phone submodule work, the intelligent desk lamp can provide light prompting；
The intelligent-induction unit is made up of mistor sensor, the mistor sensor include sense circuitry modules and
Signal processing module.
3. the intelligent desk lamp according to claim 2 based on magnetoresistance, it is characterised in that the sense circuitry modules bag
Include Hui Sidun bridge-type mistor sensors；The signal processing module includes common mode rejection circuit, signal amplification circuit and electricity
Press comparison circuit.
4. the intelligent desk lamp according to claim 3 based on magnetoresistance, it is characterised in that the Hui Sidun bridge-types magnetosensitive
In electric resistance sensor, including two pairs of bridge arms, two mistor sensitive directions in identical bridge arm are identical, with respect to the magnetic in bridge arm
Quick resistance sensitive direction is opposite；There are a pair of bridge arms to be shielded using soft magnetic materials in two pairs of bridge arms.
5. the intelligent desk lamp according to claim 3 based on magnetoresistance, it is characterised in that described control unit with
Arduino chips are used as processing core chip；The bluetooth unit is used as core processing module using HC-05 bluetooth modules；It is described
LED unit is made up of multiple LED lamp beads, and the driving chip of the LED lamp bead is PT4115 chips.
6. the intelligent desk lamp according to claim 5 based on magnetoresistance, it is characterised in that the mistor sensor
Including VCC ends, GND ends and voltage output end；The voltage output end is connected with the A/D pins of arduino chips；It is described
The PWM functional pins of arduino chips are connected with the DIM ports of PT4115 chips；The HC-05 bluetooth modules and arduino
TXD the and RXD ports of chip mutually correspond to connection.
7. the intelligent desk lamp according to claim 6 based on magnetoresistance, it is characterised in that the arduino chips
11 pin are connected with 12 pin, 11 pin of the arduino chips by a single-pole double-throw switch (SPDT) respectively with HC-05 bluetooth modules
VCC ends, the VCC ends of intelligent-induction unit are connected with the GND ends of arduino chips；The moved end of the single-pole double-throw switch (SPDT) with
11 pin of arduino chips are connected, one of the single-pole double-throw switch (SPDT) not VCC ends of moved end respectively with HC-05 bluetooth modules
It is connected with the VCC ends of intelligent-induction unit, another of the single-pole double-throw switch (SPDT) is not connected to resistance R3 one end, institute in moved end
The other end for stating resistance R3 is connected by the 5th switch with the GND ends of arduino chips.
8. the intelligent desk lamp according to claim 7 based on magnetoresistance, it is characterised in that the single-pole double-throw switch (SPDT)
Moved end is not also respectively connected with the 3rd switch and one end of the 4th switch is connected for another, and the other end of the 3rd switch connects respectively
The VCC ends of intelligent-induction unit and one end of the 6th switch are connect, the other end of the 6th switch is connected with resistance R3 one end,
The other end of the resistance R3 is also connected with 2 pin of arduino chips；It is described 4th switch the other end respectively with intelligent-induction
The VCC ends of unit are connected with resistance R1 one end, 9 pin and resistance of the other end of the resistance R1 respectively with arduino chips
R2 one end is connected, the other end ground connection of the resistance R2；
During the one not moved end of the connection of the single-pole double-throw switch (SPDT), the mobile phone is selected by bluetooth unit come control model
Module works, and selects any submodule work；
Described in the connection of the single-pole double-throw switch (SPDT) another not moved end and it is described 3rd switch connection when, the energy-conservation submodule
Work；
Described in the connection of the single-pole double-throw switch (SPDT) another not moved end and it is described 4th switch connection when, all light submodule
Work；4th switch is rotary switch, by the switch of rotation the 4th PWM of the arduino chips can be controlled to export,
So as to adjust lamplight brightness manually；
Described in the connection of the single-pole double-throw switch (SPDT) another not moved end and it is described 5th switch and the 6th switch connect simultaneously
When logical, the testing mobile phone submodule work.
9. the intelligent desk lamp based on magnetoresistance according to any one of claim 5 to 8, it is characterised in that the LED
Unit includes PT4115 chips, sustained diode 1, ballast inductance L1, electric capacity, inductance, LED lamp bead and power supply；The PT4115
The VIN ends of chip connect the negative pole of sustained diode 1 and one end of inductance respectively, the positive pole of the sustained diode 1 with
The SW ends of PT4115 chips are connected, and the other end of the inductance passes sequentially through LED lamp bead and ballast inductance L1 is connected with SW ends；Institute
The CSN ends for stating PT4115 chips are connected to the other end of inductance, and one end of the inductance is also connected with power supply, and the power supply also leads to
Cross capacity earth.
10. the intelligent desk lamp according to claim 9 based on magnetoresistance, it is characterised in that the ballast inductance L1 is
68 μ H, the sustained diode 1 is Schottky diode SS24.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710302113.0A CN107222946B (en) | 2017-05-02 | 2017-05-02 | Intelligent desk lamp based on magnetoresistance |
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| CN201710302113.0A CN107222946B (en) | 2017-05-02 | 2017-05-02 | Intelligent desk lamp based on magnetoresistance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108633134A (en) * | 2018-04-03 | 2018-10-09 | 东南大学成贤学院 | Three-dimension gesture inductive desk lamp and its induction control method based on Arduino platforms |
| CN108920311A (en) * | 2018-06-07 | 2018-11-30 | 四川斐讯信息技术有限公司 | A kind of test method and test equipment of Intelligent lamp |
| CN110430648A (en) * | 2019-08-30 | 2019-11-08 | 广州广日电梯工业有限公司 | A kind of elevator shaft streetlamp energy-saving device |
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| CN106247211A (en) * | 2016-09-06 | 2016-12-21 | 安徽大学 | Intelligent dimming desk lamp and dimming control system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108633134A (en) * | 2018-04-03 | 2018-10-09 | 东南大学成贤学院 | Three-dimension gesture inductive desk lamp and its induction control method based on Arduino platforms |
| CN108920311A (en) * | 2018-06-07 | 2018-11-30 | 四川斐讯信息技术有限公司 | A kind of test method and test equipment of Intelligent lamp |
| CN110430648A (en) * | 2019-08-30 | 2019-11-08 | 广州广日电梯工业有限公司 | A kind of elevator shaft streetlamp energy-saving device |
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| CN107222946B (en) | 2019-08-27 |
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