CN106505886A - 高清全光多媒体平台的图像输出模块供电系统 - Google Patents

高清全光多媒体平台的图像输出模块供电系统 Download PDF

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CN106505886A
CN106505886A CN201610993932.XA CN201610993932A CN106505886A CN 106505886 A CN106505886 A CN 106505886A CN 201610993932 A CN201610993932 A CN 201610993932A CN 106505886 A CN106505886 A CN 106505886A
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pwm
unit
output module
image output
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汪春侠
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Anhui Weide Industrial Automation Co Ltd
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Anhui Weide Industrial Automation Co Ltd
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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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/2173—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a biphase or polyphase circuit arrangement
    • 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
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • 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
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33538—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type
    • H02M3/33546—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current
    • H02M3/33553—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current with galvanic isolation between input and output of both the power stage and the feedback loop

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

本发明公开了一种高清全光多媒体平台的图像输出模块供电系统，包括有交流电源、高清图像输出模块、滤波单元、整流单元、PWM脉宽调制单元和DC/DC隔离变换单元，交流电源、高清图像输出模块、滤波单元、整流单元、PWM脉宽调制单元、DC/DC隔离变换单元和高清图像输出模块依次相连接；PWM脉宽调制单元包括有采用FPGA芯片实现的PWM数字序列发生单元、RC滤波器单元、电压比较器单元。本发明可在任何具有交流电的场所工作，取电具有任意性和随意性，不受严格限制，既节能，又降低了成本；采用FPGA、RC滤波电路以及电压比较器实现PWM脉宽调制电路，具有灵活度更高、实时调节性能更好和抗温度变化能力更强的优点。

Description

高清全光多媒体平台的图像输出模块供电系统
技术领域
本发明涉及数字多媒体光传输交换及管理技术领域，具体是一种高清全光多媒体平台的图像输出模块供电系统。
背景技术
高清全光多媒体平台采用全数字化光纤传输和交换模式，是集高标清视频、音频、低速数据、开关量、以太网等信号于一体的数字多媒体光传输交换及管理平台，集高清数字视频光纤传输、交换功能于一体；解决了光纤传输网络与模拟视频矩阵联接时多次数模间转换引起的视频质量损失、连接复杂、运营管理繁琐等诸多问题；兼容主流模拟矩阵管理协议；满足了数字化存储需求，真正实现了一体化统一调度管理。同时支持AHD、HD-CVI、HD-TVI 、HD-SDI、HDMI等视频接口，具有强大的联网监控功能，满足了视频联网高清晰、高品质、高实时图像的需求。
高清图像输出模块作为高清全光多媒体平台的重要组成部分，其作用是对数字信号输出至显示模块进行显示。其传统的直流远供电源方案是：将专业机房的DC48V直流电源进行DC/DC 升压变换输出DC220-380V的直流高压，经线路传输到远端机，经远端机的开关电源电路进行DC/DC降压变换成高清图像输出模块所需要的DC48V电源，实现点对点的远程供电。
上述特点使得现有的直流远供电源存在如下缺陷：
1、由于直流远供电源只能将通信专业机房电池组或开关电源的DC48V变换成直流高压，只有在通信专业机房里和具有直流电池或开关电源DC48V的场所才可以使用，而这种专业机房的资源是有限的，DC48V电池电源也是有限的，不能随时随地任意取用方便的交流电，使使用条件和环境受到严格限制。
2、只能进行“一点对一点”的直流远供。
3、只能输出DC220-380V的直流高压，不能输出DC400V，特别是不能输出DC800V的直流高压，而DC800V的高压传输损耗要比DC380V的减少50％、线路建设造价也降低40-50％，不利于节约节能。
发明内容
本发明的目的是为了弥补现有技术存在的缺陷和不足，提供一种高清全光多媒体平台的图像输出模块供电系统。
本发明的技术方案如下：
一种高清全光多媒体平台的图像输出模块供电系统，其特征在于：包括有交流电源、高清图像输出模块、滤波单元、整流单元、PWM脉宽调制单元和DC/DC隔离变换单元，所述滤波单元的输入端与交流电源相连接，滤波单元的输出端依次与所述的整流单元、PWM脉宽调制单元和DC/DC隔离变换单元相连接，所述DC/DC隔离变换单元的输出端与所述高清图像输出模块的电源输入端相连接；所述的PWM脉宽调制单元为采用FPGA的PWM脉宽调制电路，包括有采用FPGA芯片实现的PWM数字序列发生单元、RC滤波器单元、电压比较器单元，其中采用FPGA芯片实现的PWM数字序列发生单元的输出端与RC滤波器单元的输入端相连，RC滤波器的输出端与电压比较器单元的反相输入端相连。
所述的高清全光多媒体平台的图像输出模块供电系统，其特征在于：所述的交流电源为交流工频或中频电压源。
本发明的有益效果：
1、本发明无需进行“一点对一点”的直流远供，可在任何具有交流电的场所工作，取电具有任意性和随意性，不受严格限制，既节能，又降低了成本。
2、本发明采用FPGA、RC滤波电路以及电压比较器实现PWM脉宽调制电路，具有灵活度更高、实时调节性能更好和抗温度变化能力更强的优点，不需要使用传统的PWM专用电路。
附图说明
图1为本发明结构原理框图。
具体实施方式
参见图1，一种高清全光多媒体平台的图像输出模块供电系统，包括有交流电源、高清图像输出模块、滤波单元、整流单元、PWM脉宽调制单元和DC/DC隔离变换单元，滤波单元的输入端与交流电源相连接，滤波单元的输出端依次与整流单元、PWM脉宽调制单元和DC/DC隔离变换单元相连接，DC/DC隔离变换单元的输出端与高清图像输出模块的电源输入端相连接；PWM脉宽调制单元为采用FPGA的PWM脉宽调制电路，包括有采用FPGA芯片实现的PWM数字序列发生单元、RC滤波器单元、电压比较器单元，其中采用FPGA芯片实现的PWM数字序列发生单元的输出端与RC滤波器单元的输入端相连，RC滤波器的输出端与电压比较器单元的反相输入端相连。
本发明中，交流电源为交流工频或中频电压源。

Claims (2)

1.一种高清全光多媒体平台的图像输出模块供电系统，其特征在于：包括有交流电源、高清图像输出模块、滤波单元、整流单元、PWM脉宽调制单元和DC/DC隔离变换单元，所述滤波单元的输入端与交流电源相连接，滤波单元的输出端依次与所述的整流单元、PWM脉宽调制单元和DC/DC隔离变换单元相连接，所述DC/DC隔离变换单元的输出端与所述高清图像输出模块的电源输入端相连接；所述的PWM脉宽调制单元为采用FPGA的PWM脉宽调制电路，包括有采用FPGA芯片实现的PWM数字序列发生单元、RC滤波器单元、电压比较器单元，其中采用FPGA芯片实现的PWM数字序列发生单元的输出端与RC滤波器单元的输入端相连，RC滤波器的输出端与电压比较器单元的反相输入端相连。
2.根据权利要求1所述的高清全光多媒体平台的图像输出模块供电系统，其特征在于：所述的交流电源为交流工频或中频电压源。
CN201610993932.XA 2016-11-11 2016-11-11 高清全光多媒体平台的图像输出模块供电系统 Pending CN106505886A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090103337A1 (en) * 2007-10-17 2009-04-23 Power Integrations, Inc. Method and apparatus to reduce the volume required for bulk capacitance in a power supply
CN102427349A (zh) * 2011-09-30 2012-04-25 清华大学 采用fpga的pwm脉宽调制电路
CN102723880A (zh) * 2012-06-13 2012-10-10 广州金升阳科技有限公司 一种交流变直流电路
CN205544563U (zh) * 2016-04-21 2016-08-31 国网黑龙江省电力有限公司鸡西供电公司 一种便携式应急通信电源

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090103337A1 (en) * 2007-10-17 2009-04-23 Power Integrations, Inc. Method and apparatus to reduce the volume required for bulk capacitance in a power supply
CN102427349A (zh) * 2011-09-30 2012-04-25 清华大学 采用fpga的pwm脉宽调制电路
CN102723880A (zh) * 2012-06-13 2012-10-10 广州金升阳科技有限公司 一种交流变直流电路
CN205544563U (zh) * 2016-04-21 2016-08-31 国网黑龙江省电力有限公司鸡西供电公司 一种便携式应急通信电源

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Application publication date: 20170315