CN107544603B - Unmanned electric light driving constant-current circuit, integrated circuit and control system - Google Patents
Unmanned electric light driving constant-current circuit, integrated circuit and control system Download PDFInfo
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- CN107544603B CN107544603B CN201710929919.2A CN201710929919A CN107544603B CN 107544603 B CN107544603 B CN 107544603B CN 201710929919 A CN201710929919 A CN 201710929919A CN 107544603 B CN107544603 B CN 107544603B
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- transistor
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- electric light
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
Abstract
The present invention relates to semiconductor integrated circuit technology field more particularly to a kind of unmanned electric light driving constant-current circuits, integrated circuit and control system, wherein it includes mirror image circuit, constant-current circuit that the electric light, which drives constant-current circuit,.Advantage：The circuit utilizes soft starting circuit, and the constant-current circuit to be connected provides bandgap voltage reference, and power supply rejection ratio with higher, the variation solved in input voltage will lead to the variation of whole system input power, to influence the light efficiency problem of system effectiveness.
Description
Technical field
The present invention relates to semiconductor integrated circuit technology fields more particularly to a kind of unmanned electric light to drive Constant Electric Current
Road, integrated circuit and control system.
Background technique
The operating environment of the unmanned Intelligent internet of things equipment such as unmanned plane, unmanned vehicle has uncertain and complexity,
It needs constantly to detect ambient enviroment, avoids colliding with barrier.Traditional unmanned plane uses sound wave intelligent recognition
Technical solution, a kind of method are the comprehensive realization scanning of radar itself, and another method is using phased-array radar, both sides
Case needs to increase complicated motor device to generate additional load.Traditional unmanned vehicle uses Visual intelligent identification technology side
Case using the mature technology of image procossing, but easily receives the influence of the factors such as light, dust, smog, is not able to satisfy round-the-clock drive
Sail needs.
In the prior art, common scheme is as shown in Figure 1, include rectification circuit, constant-current drive circuit and load, perseverance
Stream output is Iout=Vref/Rcs.This application scheme is that system structure is simple relative to Switching Power Supply scheme advantage, uses
Component is few, and disadvantage is that the quantity of system load must be designed in strict accordance with input voltage, and the variation of input voltage can be led
The variation for causing whole system input power, to influence the light efficiency efficiency of system.With the continuous development of laser technology, laser thunder
More and more extensive use is obtained up in every field.For example, laser radar is usually used in detecting dynamic object in detection field,
Measurement angle increases and requires non-blind area at this time, it is also necessary to adapt to remote or short distance ranging.When short distance ranging, swash
Optical radar power is small, can satisfy eye-safe requirement, but range capability is weaker；When remote ranging, laser radar function
Rate is big, but is unable to satisfy eye-safe requirement, and the stray light of short distance will increase cause distance under be not available.
In conclusion needing to design a kind of
Unmanned electric light driving constant-current circuit, integrated circuit and the control system of identification.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of unmanned electric light driving constant-current circuit, integrated circuit with
Control system, the variation solved in input voltage will lead to the variation of whole system input power, to influence the effect of system
The light efficiency problem of rate.
To achieve the above object, the present invention adopts the following technical scheme that：
In a first aspect, the present invention proposes a kind of unmanned electric light driving constant-current circuit, including：
Start-up circuit connects power end, and the constant-current circuit to be connected provides soft start voltage；
Constant-current circuit adjusts the loop current of the unmanned electric light driving constant-current circuit, so that the loop current
It keeps constant；
The start-up circuit includes four transistors, a capacitor, wherein：
The grid of first N transistor (N1), grid, the first P crystal for draining and being connected to the 2nd N transistor (N2) after connecing
Manage the drain electrode of (P1), source electrode ground connection；
The drain electrode of the 2nd N transistor (N2) is connect with the grid of the 3rd N transistor (N3), and passes through first capacitor
(C1) DC power supply terminal, source electrode ground connection are connected to；
The source electrode of the first P transistor (P1) and the drain electrode of the 3rd N transistor (N3) are connected to direct current simultaneously
Source, grounded-grid；
The constant-current circuit includes an operational amplifier, an electric light diode, a transistor and a resistance,
In：
The source electrode of 4th N transistor (N4) passes through the negative input end of first resistor (R1) and operational amplifier, adjustment circuit
Port connection, drain electrode are connect by the electric light diode (D1) of Opposite direction connection with the source electrode of the 3rd N transistor (N3)；
The positive input terminal of the operational amplifier is connect with reference voltage Vref, output end and the 4th N transistor
(N4) grid connection.
Preferably, the electric light diode (D1) includes single electric light diode or electric light diode string.
Preferably, the area equation of the first N transistor (N1) and the 2nd N transistor (N2).
Preferably, the transistor uses one of field-effect tube, bipolar transistor or a variety of.
Preferably, the first N transistor (N1), the 2nd N transistor (N2), the 3rd N transistor (N3) and the 4th N crystal
Managing (N4) is NMOS tube, and the first P transistor (P1) is PMOS tube.
Second aspect, the present invention propose a kind of unmanned photoelectricity drive integrated circult, including adjustment circuit, first aspect
The unmanned photoelectricity drives constant-current circuit, and the adjustment circuit includes the sampling resistor Rext of a ground connection, the sampling
Electric light diode D1 in constant-current circuit described in resistance adjustment is supported on the constant current hold in the unit time.
The third aspect, the present invention propose a kind of unmanned photoelectricity driving control system, including rectification circuit, first aspect
The unmanned photoelectricity drives constant-current circuit, and the rectification circuit carries out full-wave rectification to alternating current, to described in connection
Start-up circuit is powered.
Beneficial effects of the present invention：Unmanned electric light driving constant-current circuit, integrated circuit and control system of the invention,
Using soft starting circuit, the constant-current circuit to be connected provides bandgap voltage reference, and power supply rejection ratio with higher solves
It will lead to the variation of whole system input power in the variation of input voltage, to influence the light efficiency problem of system effectiveness.
Detailed description of the invention
With attached drawing, the invention will be further described, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.
Fig. 1 is the unmanned electric light driving one embodiment circuit diagram of constant-current circuit of the prior art.
Fig. 2 is unmanned electric light driving one example structure schematic diagram of constant-current circuit of the invention.
Specific embodiment
Technical solution of the present invention is further described with embodiment with reference to the accompanying drawing, this is preferable reality of the invention
Apply example.A kind of unmanned electric light driving constant-current circuit, integrated circuit and control system provided in an embodiment of the present invention can answer
For each scene in Internet of Things intelligent identification technology field, including but not limited to 2G GSM, 3G CDMA, 4G LTE/
LTE-A, the mobile communication of 5G eMBB, cluster communication, satellite communication, laser communication, fiber optic communication, DTV, radio frequency are known
Not, the systems such as power carrier, unmanned vehicle, unmanned plane, Internet of Things, radar, the embodiment of the present invention are not particularly limited this.
The present invention proposes a kind of unmanned electric light driving constant-current circuit, as shown in Fig. 2, including：
Start-up circuit connects power end, and the constant-current circuit to be connected provides soft start voltage；
Constant-current circuit adjusts the loop current of unmanned electric light driving constant-current circuit, so that loop current is kept constant；
In the present embodiment, start-up circuit includes four transistors, a capacitor, wherein the grid of the first N transistor (N1)
The drain electrode of pole, the grid, the first P transistor (P1) for draining and being connected to the 2nd N transistor (N2) after connecing, source electrode ground connection；It is described
The drain electrode of 2nd N transistor (N2) is connect with the grid of the 3rd N transistor (N3), and is connected to direct current by first capacitor (C1)
Power end, source electrode ground connection；The source electrode of the first P transistor (P1) is connect simultaneously with the drain electrode of the 3rd N transistor (N3)
To DC power supply terminal, grounded-grid；
In the present embodiment, constant-current circuit includes an operational amplifier, an electric light diode, a transistor and one
Resistance, wherein the source electrode of the 4th N transistor (N4) passes through the negative input end of first resistor (R1) and operational amplifier, adjustment electricity
Road port connection, drain electrode are connect by the electric light diode (D1) of Opposite direction connection with the source electrode of the 3rd N transistor (N3)；Institute
The positive input terminal for stating operational amplifier is connect with reference voltage Vref, and the grid of output end and the 4th N transistor (N4) connects
It connects.Wherein, electric light diode (D1) includes single electric light diode or electric light diode string.
In the present embodiment, the first N transistor (N1), the 2nd N transistor (N2), the 3rd N transistor (N3) and the 4th N crystal
Managing (N4) is NMOS tube, and the first P transistor (P1) is PMOS tube, the area of the first N transistor (N1) and the 2nd N transistor (N2)
It is equal.
It should be noted that transistor can be using one of field-effect tube, bipolar transistor or a variety of.Transistor
It is also possible to the grid of depletion type N-channel MOS transistor and structure that source electrode is connect, though it is not shown, but can certainly
It is the structure for connecting the grid of depletion type P channel MOS transistor with source electrode.
The integrated electricity of unmanned electric light driving being made of adjustment circuit, above-mentioned unmanned electric light driving constant-current circuit
Road, wherein adjustment circuit includes the sampling resistor Rext of a ground connection, when sampling resistor adjusting constant-current circuit D1 is supported on unit
Interior constant current hold.
The working principle of the invention：By the first N transistor (N1), the 2nd N transistor (N2), the first P transistor (P1) and
The soft starting circuit that first capacitor (C1) is constituted is the automatic control constant current being made of operational amplifier and the 4th N transistor (N4)
Circuit provides the bandgap voltage reference with power supply rejection ratio, guarantees electric light diode (D1) under stable operating condition just
Often work.
The present invention also proposes a kind of unmanned electric light driving control system, including rectification circuit, above-mentioned unmanned
Electric light drives constant-current circuit, and rectification circuit carries out full-wave rectification to alternating current, is powered to the start-up circuit of connection.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (4)
1. a kind of unmanned electric light drives constant-current circuit, which is characterized in that including：
Start-up circuit connects power end, and the constant-current circuit to be connected provides soft start voltage；
Constant-current circuit adjusts the loop current of the unmanned electric light driving constant-current circuit, so that the loop current is kept
It is constant；
The start-up circuit includes four transistors, a capacitor, wherein：
First N transistor（N1）Grid, drain and be connected to the 2nd N transistor after connecing（N2）Grid, the first P transistor
（P1）Drain electrode, source electrode ground connection；
The 2nd N transistor（N2）Drain electrode and the 3rd N transistor（N3）Grid connection, and pass through first capacitor（C1）Even
It is connected to DC power supply terminal, source electrode ground connection；
The first P transistor（P1）Source electrode and the 3rd N transistor（N3）Drain electrode simultaneously be connected to DC power supply terminal,
Grounded-grid；
The constant-current circuit includes an operational amplifier, an electric light diode, a transistor and a resistance, wherein：
4th N transistor（N4）Source electrode pass through first resistor（R1）Negative input end, adjustment circuit port with operational amplifier
Connection, drain electrode pass through the electric light diode of Opposite direction connection（D1）With the 3rd N transistor（N3）Source electrode connection；
The positive input terminal of the operational amplifier is connect with reference voltage Vref, output end and the 4th N transistor（N4）'s
Grid connection, the transistor use one of field-effect tube, bipolar transistor or a variety of, the first N transistor（N1）,
2nd N transistor（N2）, the 3rd N transistor（N3）And the 4th N transistor（N4）For NMOS tube, the first P transistor（P1）
For PMOS tube, the first N transistor（N1）With the 2nd N transistor（N2）Area equation.
2. unmanned electric light according to claim 1 drives constant-current circuit, which is characterized in that the electric light diode
（D1）Including single electric light diode or electric light diode string.
3. a kind of unmanned photoelectricity drive integrated circult, which is characterized in that including any one of adjustment circuit, claim 1-2
The unmanned photoelectricity drives constant-current circuit, and the adjustment circuit includes the sampling resistor Rext of a ground connection, the sampling
Electric light diode D1 in constant-current circuit described in resistance adjustment is supported on the constant current hold in the unit time.
4. a kind of unmanned photoelectricity driving control system, which is characterized in that including any one of rectification circuit, claim 1-2
The unmanned photoelectricity drives constant-current circuit, and the rectification circuit carries out full-wave rectification to alternating current, to described in connection
Start-up circuit is powered.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710929919.2A CN107544603B (en) | 2017-10-09 | 2017-10-09 | Unmanned electric light driving constant-current circuit, integrated circuit and control system |
| PCT/CN2018/097973 WO2019071998A1 (en) | 2017-10-09 | 2018-08-01 | Unmanned electro-optic driving constant-current circuit, integrated circuit and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710929919.2A CN107544603B (en) | 2017-10-09 | 2017-10-09 | Unmanned electric light driving constant-current circuit, integrated circuit and control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107544603A CN107544603A (en) | 2018-01-05 |
| CN107544603B true CN107544603B (en) | 2018-11-20 |
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|---|---|---|---|
| CN201710929919.2A Active CN107544603B (en) | 2017-10-09 | 2017-10-09 | Unmanned electric light driving constant-current circuit, integrated circuit and control system |
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| Country | Link |
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| CN (1) | CN107544603B (en) |
| WO (1) | WO2019071998A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107544603B (en) * | 2017-10-09 | 2018-11-20 | 江苏先云信息技术有限公司 | Unmanned electric light driving constant-current circuit, integrated circuit and control system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100045342A (en) * | 2008-10-23 | 2010-05-03 | 심현섭 | The ac power led illuminating apparatus having power stabilization function |
| JP6008496B2 (en) * | 2011-12-21 | 2016-10-19 | エスアイアイ・セミコンダクタ株式会社 | Voltage regulator |
| CN103218001B (en) * | 2013-04-15 | 2014-09-10 | 无锡普雅半导体有限公司 | Soft-start voltage adjusting circuit |
| CN103281832A (en) * | 2013-06-06 | 2013-09-04 | 东莞博用电子科技有限公司 | Electric current soft-starting circuit for driving alternating-current LED |
| CN204090252U (en) * | 2014-10-10 | 2015-01-07 | 无锡华润矽科微电子有限公司 | Intelligent power control circuit |
| CN107544603B (en) * | 2017-10-09 | 2018-11-20 | 江苏先云信息技术有限公司 | Unmanned electric light driving constant-current circuit, integrated circuit and control system |
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2017
- 2017-10-09 CN CN201710929919.2A patent/CN107544603B/en active Active
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2018
- 2018-08-01 WO PCT/CN2018/097973 patent/WO2019071998A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN107544603A (en) | 2018-01-05 |
| WO2019071998A1 (en) | 2019-04-18 |
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Effective date of registration: 20181017 Address after: 224700 18, Yan Qiao Road, Jianhu County, Yancheng City, Jiangsu. Applicant after: Jiangsu first cloud Information Technology Co., Ltd. Address before: 523000 08, 06 tower, 17 Dongguan Avenue, Dongtai street, Dongcheng Street, Dongguan, Guangdong. Applicant before: Dongguan informative Mdt InfoTech Ltd |
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