CN109104089A - A kind of spherical shooting electromechanical source - Google Patents
A kind of spherical shooting electromechanical source Download PDFInfo
- Publication number
- CN109104089A CN109104089A CN201811222919.XA CN201811222919A CN109104089A CN 109104089 A CN109104089 A CN 109104089A CN 201811222919 A CN201811222919 A CN 201811222919A CN 109104089 A CN109104089 A CN 109104089A
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- Prior art keywords
- unit
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- pwm controller
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- 238000005070 sampling Methods 0.000 claims abstract description 15
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of spherical shooting electromechanical sources, including sequentially connected lightning protection unit, EMI circuit, the first rectification filtering unit, power conversion unit, the second rectification filtering unit, output unit；First rectification filtering unit connects PWM controller by input overvoltage/undervoltage protection location; input overvoltage/undervoltage protection location also passes through PFC unit connection power conversion unit; first rectification filtering unit is also connected with PFC unit; output unit connects pressure stabilizing loop by sampling unit; pressure stabilizing loop connects PWM controller; output voltage also passes through short-circuit protection unit connection PWM controller; output unit also passes through current-limiting protection circuit and connects PWM controller; output unit also passes through output over-voltage protection unit connection PWM controller, and PWM controller connects power conversion unit.The present invention realizes direct current 48V plant-grid connection, is easy to use in solar energy and the use of the environment of storage battery power supply mode.
Description
Technical field
The invention belongs to power supply design fields, more particularly, to a kind of spherical shooting electromechanical source.
Background technique
Ball-shaped camera is a kind of intelligent video camera front end, is named as intelligent ball-shaped camera, or integrated ball entirely
Intelligent sphere or abbreviation ball machine.Ball-shaped camera is the monitoring system most complicated and best front monitoring front-end of general performance effect, energy
Enough adapt to high density, most complicated monitoring occasion.
Ball-shaped camera product is quickly popularized in security protection market, since ball machine installation environment is uncertain and construction personnel's water
Put down it is irregular, former ball-shaped camera product using AC24V power supply power supply mode, but due to utility grid system
Environmental stability, power grid EMI serious interference, causes equipment built-in system that can not obtain stable power-supplying.
Summary of the invention
In view of this, the present invention is directed to propose a kind of spherical shooting electromechanical source, realizes that the external of ball-shaped camera is realized
DC48V direct current supply mode.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of spherical shooting electromechanical source, including sequentially connected lightning protection unit, EMI circuit, the first rectification filtering unit, function
Rate converting unit, the second rectification filtering unit, output unit；First rectification filtering unit is connected by input overvoltage/undervoltage protection location
PWM controller is connect, input overvoltage/undervoltage protection location also passes through PFC unit connection power conversion unit, the first rectification filtering unit
It is also connected with PFC unit, output unit connects pressure stabilizing loop by sampling unit, and pressure stabilizing loop connects PWM controller, output voltage
PWM controller is also connected by short-circuit protection unit, output unit also connects PWM controller, output by current-limiting protection circuit
Unit also passes through output over-voltage protection unit connection PWM controller, and PWM controller connects power conversion unit.
Further, the input rectifying filter power supply after full-wave rectification for becoming to pulse 50HZ alternating voltage
DC voltage, then high direct voltage is obtained by input filter capacitor.
Further, the PFC unit is by the sampling to the input voltage for being sent into pfc controller, for adjusting control
The duty ratio of signal changes the turn-on and turn-off time of metal-oxide-semiconductor, stablize PFC output voltage.
Further, the pressure stabilizing loop is known as feedback control loop, inputs electricity by the output voltage control that voltage-stabiliser tube acquires
Pressure sampling, to adjust the duty ratio of control signal, so that output voltage be made to keep stablizing.
Further, the current-limiting protection circuit is controlled defeated by the sampling resistor both end voltage that sampled output current passes through
Enter voltage sampling, to adjust the duty ratio of control signal, output voltage is reduced, to achieve the purpose that output overloading current limliting.
Compared with the existing technology, a kind of spherical shooting electromechanical source of the present invention has the advantage that the present invention passes through
Circuit innovation is done to meet direct current 48V plant-grid connection mode to input rectifying unit, is easy to use in solar energy and battery confession
The environment of electric mode uses.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of schematic illustration of spherical shooting electromechanical source described in the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Ball-shaped camera power supply of the invention is set using a kind of ball-shaped camera power supply for supporting 48 volts of power supply power supplies of direct current
Meter, comprising: lightning protection unit, EMI circuit, input rectifying filter circuit, power conversion, input undervoltage protection location, output overvoltage
Protection location, PFC unit, PWM controller, pressure stabilizing loop, sampling, current-limiting protection, short-circuit protection, output rectifier and filter,
It is characterized in that, direct current 48V exports the electricity of DC12V required for stable ball machine by the switching power circuit that said units combine
Pressure.
Above-mentioned Switching Power Supply is that the direct current 48V power supply after rectification is carried out HF switch and is led by PWM control switch pipe
It is logical, so that the high frequency transformer that high-frequency current flows into Switching Power Supply is primary, so that transformer secondary output be made to generate induced current, pass through
Stable 12V voltage is just obtained after rectification.
Wherein,
Lightning protection unit: when meeting with indirect lightning strike, the high pressure of generation is through power grid progress power-supply system, by varistor and electric discharge
These high-pressure energies of the lightning protection circuit of tube device composition releasing play the role of to power protection.
EMI circuit: transplanting the electromagnetic noise and noise signal of input power, prevents to power supply disturbance, prevents simultaneously
The high frequency spurs that only power supply itself generates interfere power grid.
Input rectifying filter power supply: 50HZ alternating voltage is become into pulsating dc voltage after full-wave rectification, then is passed through
Input filter capacitor obtains high direct voltage；
Power conversion: power conversion is Switching Power Supply core, is referred to the high direct voltage after rectification, is converted into exchanging
AC exports required DC low-voltage again；
Input undervoltage protection location: the sampling voltage of circuit is protected to be all from the voltage after input filter.By with voltage
The output high level that reference voltage in comparator compares generation goes control master controller to turn it off.Power supply is without output.
Output over-voltage protection unit:
When output voltage exceeds design value, output voltage is limited to a safety value and is obtained in range.When in Switching Power Supply
When pressure stabilizing loop in portion's breaks down or causes output overvoltage phenomenon since user's operation is improper, overvoltage crowbar is protected
To prevent damage rear class electrical equipment.
PFC unit (circuit of power factor correction):
Changed by the sampling to the input voltage for being sent into pfc controller for adjusting the duty ratio of control signal
The turn-on and turn-off time of metal-oxide-semiconductor stablizes PFC output voltage.
Pressure stabilizing loop:
Pressure stabilizing loop is known as feedback control loop, is sampled by the output voltage control input voltage that voltage-stabiliser tube acquires, to adjust
The duty ratio of signal is controlled, so that output voltage be made to keep stablizing.
Current-limiting protection:
Input voltage sampling is controlled by the sampling resistor both end voltage that sampled output current passes through, to adjust control signal
Duty ratio, output voltage reduce, to achieve the purpose that output overloading current limliting
Short-circuit protection:
In the case where exporting terminal shortcircuit, pwm control circuit can output current limit in a safe range, when
Output circuit short circuit or overcurrent, primary side current of transformer increase, and PWM controller output duty cycle is gradually increased, metal-oxide-semiconductor source electrode electricity
Pressure increases, and when more than 1V, PWM output is closed without output.
The design of this power supply is by doing circuit innovation to meet direct current 48V plant-grid connection mode, conveniently to input rectifying unit
Using in solar energy and the use of the environment of storage battery power supply mode.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of spherical shooting electromechanical source, it is characterised in that: including sequentially connected lightning protection unit, EMI circuit, the first rectification filter
Wave unit, power conversion unit, the second rectification filtering unit, output unit；First rectification filtering unit passes through input overvoltage/undervoltage
Protection location connects PWM controller, and input overvoltage/undervoltage protection location also passes through PFC unit connection power conversion unit, and first is whole
Stream filter unit is also connected with PFC unit, and output unit connects pressure stabilizing loop by sampling unit, and pressure stabilizing loop connects PWM control
Device, output voltage also pass through short-circuit protection unit connection PWM controller, and output unit also passes through current-limiting protection circuit and connects PWM
Controller, output unit also pass through output over-voltage protection unit connection PWM controller, and PWM controller connects power conversion unit.
2. a kind of spherical shooting electromechanical source according to claim 1, it is characterised in that: the input rectifying filter power supply is used
In 50HZ alternating voltage is become pulsating dc voltage after full-wave rectification, then direct current height is obtained by input filter capacitor
Pressure.
3. a kind of spherical shooting electromechanical source according to claim 1, it is characterised in that: the PFC unit passes through to feeding
The sampling of the input voltage of pfc controller, when for adjusting the duty ratio of control signal, the i.e. turn-on and turn-off of change metal-oxide-semiconductor
Between, stablize PFC output voltage.
4. a kind of spherical shooting electromechanical source according to claim 1, it is characterised in that: the pressure stabilizing loop is known as feedback loop
Road is sampled by the output voltage control input voltage that voltage-stabiliser tube acquires, to adjust the duty ratio of control signal, to make to export
Voltage keeps stablizing.
5. a kind of spherical shooting electromechanical source according to claim 1, it is characterised in that: the current-limiting protection circuit is by adopting
The sampling resistor both end voltage control input voltage sampling that sample output electric current passes through, to adjust the duty ratio of control signal, output
Voltage reduces, to achieve the purpose that output overloading current limliting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222919.XA CN109104089A (en) | 2018-10-19 | 2018-10-19 | A kind of spherical shooting electromechanical source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222919.XA CN109104089A (en) | 2018-10-19 | 2018-10-19 | A kind of spherical shooting electromechanical source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109104089A true CN109104089A (en) | 2018-12-28 |
Family
ID=64869260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811222919.XA Pending CN109104089A (en) | 2018-10-19 | 2018-10-19 | A kind of spherical shooting electromechanical source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109104089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346723A (en) * | 2021-06-10 | 2021-09-03 | 广东绿富域资源再生科技有限公司 | Household garbage incinerator slag grab bucket heat dissipation system utilizing main power supply of variable frequency motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204928348U (en) * | 2015-08-13 | 2015-12-30 | 郑州力帆电气有限公司 | Embedded dual supply automatic transfer equipment of protocol conversion ware |
| CN205319797U (en) * | 2015-12-02 | 2016-06-15 | 新余学院 | Industrial automation produces monitored control system |
-
2018
- 2018-10-19 CN CN201811222919.XA patent/CN109104089A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204928348U (en) * | 2015-08-13 | 2015-12-30 | 郑州力帆电气有限公司 | Embedded dual supply automatic transfer equipment of protocol conversion ware |
| CN205319797U (en) * | 2015-12-02 | 2016-06-15 | 新余学院 | Industrial automation produces monitored control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346723A (en) * | 2021-06-10 | 2021-09-03 | 广东绿富域资源再生科技有限公司 | Household garbage incinerator slag grab bucket heat dissipation system utilizing main power supply of variable frequency motor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181228 |
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| RJ01 | Rejection of invention patent application after publication |