Mains supply high speed monitoring system for emergency lighting power source
An emergency lighting and monitoring system technology, applied in the direction of measuring current/voltage, measuring devices, measuring electrical variables, etc., can solve problems that affect the real-time performance and accuracy of detecting mains voltage, slow down emergency switching time, and affect reliability, etc. , to achieve the effect of improving the speed and reliability of mains monitoring, improving the speed of mains monitoring, and reducing equipment costs
Active Publication Date: 2016-12-07
深圳市英朗光电有限公司
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Problems solved by technology
There is a large filter capacitor in the rectifier filter circuit and a large internal resistance of the power frequency transformer, which affects the real-time and accuracy of detecting the mains voltage, thereby slowing down the emergency switching time and reducing the reliability
The mains voltage monitoring unit or the primary side circuit of the high-frequency transformer is used for monitoring, but many components are required and the circuit is complicated, which affects reliability
Method used
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[0025] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, so they are only examples, and should not be used to limit the protection scope of the present invention.
[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.
[0027] figure 1 It shows that the present invention provides a high-speed mains monitoring system for emergency lighting power supply, the system includes a rectification filter circuit 1, a power management module 2, a high-frequency transformer 3, a mains voltage monitoring circuit 4 and a microcontroller 5. combine figure 2 The rectifying and filtering circuit 1 is provided...
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The invention belongs to the technical field of emergency lighting power source devices and provides a mains supply high speed monitoring system for an emergency lighting power source. The system comprises a rectifying and filtering circuit, a power source management module, a high-frequency voltage transformer, a mains supply voltage monitoring circuit and a microcontroller; the rectifying and filtering circuit is provided with a busbar voltage anode, the power source management module is provided with a starting end and control end, the starting end is connected with the busbar voltage anode, the control end is connected with a first end of a primary winding of the high-frequency voltage transformer, the high-frequency voltage transformer comprises the primary winding and a secondary winding, a second end of the primary winding is connected with the busbar voltage anode, the mains supply voltage monitoring circuit is used for collecting pulse voltage value of pulse voltage and transmitting the pulse voltage value to the microcontroller, and the microcontroller is used for monitoring whether the mains supply is normal based on the pulse voltage value. Via the mains supply high speed monitoring system for the emergency lighting power source, real time performance and accuracy of mains supply voltage monitoring by the emergency lighting power source can be improved, and a circuit structure can be simplified.
Description
technical field [0001] The invention relates to the technical field of emergency power supply devices, in particular to a high-speed mains power monitoring system for emergency lighting power supplies. Background technique [0002] The emergency lighting power supply and the lamps can be combined to form an emergency lighting lamp. When the mains power is normal, the mains power is output to the external lamps. The circuit transmits the voltage to the switching output circuit, and then supplies it to an external lamp for lighting. [0003] The mains voltage monitoring unit of the existing emergency lighting power supply is generally monitored by the secondary rectification and filtering of the power frequency transformer. There is a large filter capacitor in the rectifier filter circuit and a large internal resistance of the power frequency transformer, which affects the real-time and accuracy of detecting the mains voltage, which in turn slows down the emergency switching ...
Claims
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IPC IPC(8): G01R19/165
CPCG01R19/16547
Inventor 袁彦涛
Owner 深圳市英朗光电有限公司