CN112577025A

CN112577025A - Lamp protection device and method thereof

Info

Publication number: CN112577025A
Application number: CN201910927835.4A
Authority: CN
Inventors: 杨明儒; 陈俊道; 洪崇元; 林佩仪; 杨志伟; 赖建薳; 林柏均
Original assignee: Weili Industrial Network Co ltd
Current assignee: Weili Industrial Network Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-03-30

Abstract

The invention relates to a lamp protection device, which comprises: the controller is electrically connected with the light source, the protector is electrically connected with the controller, the power source is electrically connected with the protector, an electric signal of the protector is sensed by a sensor of the controller, and when the electric signal is lower than a threshold value, the first transmitter transmits a warning signal to the remote server, so that the problem that the protector cannot be replaced in time after the light source is damaged by overvoltage or surge in the conventional technology is solved.

Description

Lamp protection device and method thereof

Technical Field

The present invention relates to a lamp protection device and a method thereof, and more particularly, to a lamp protection device and a method thereof, in which a protector absorbs an overvoltage or a surge, and a controller detects whether the protector is damaged and transmits the damage to a remote server.

Background

The luminous efficiency of the current light source is higher than that of a common incandescent bulb, and the light source does not contain harmful chemical substances like a Cold Cathode Fluorescent Lamp (CCFL) and is a product with high environmental protection; such as indoor lighting fixtures, outdoor display or indicator fixtures, street lamps, etc., have gradually replaced conventional light fixtures with light sources.

A driver is required for the light source to be bright; the driver is used for providing stable and reliable power for the light source; however, no matter which type of driver is used, and no matter the magnitude or power, the current driving the LED must be kept constant, so that the advantages of the LED can be fully realized; the current of the light source can be regulated by Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM).

A Varistor (VDR), also known as a Varistor, Varistor or surge absorber, is an electronic component with a significantly non-ohmic conductor property, the resistance of which changes with the external Voltage, so that its current-Voltage characteristic curve has a significant nonlinearity. Varistors are widely used in electronic circuits to protect the circuits from possible damage due to transient voltage surges in the power supply system. When high voltage is applied, the resistance of the piezoresistor is reduced to shunt current, thereby protecting sensitive electronic components.

Protection principle of surge absorber: when in the ready state, the piezoresistor has high impedance (several mega ohm) relative to the protected electronic component and does not influence the characteristics of the originally designed circuit. However, when a transient surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber becomes low (only a few ohms) and causes a short circuit in the line, and thus the electronic product or more expensive components are protected.

The most common Varistor is a Metal Oxide Varistor (MOV) comprising a ceramic block of zinc Oxide particles spaced apart from a small amount of other Metal Oxide or polymer, sandwiched between two Metal sheets. The junction of the particles and the adjacent oxide can form a diode effect, and the diode is equivalent to a large pile of diodes which are connected in a back direction due to a large quantity of disordered particles, so that only small reverse leakage current exists at low voltage, and when high voltage is met, the diode is subjected to reverse breakdown due to hot electrons and a tunnel effect, and large current flows. Therefore, the current-voltage characteristic curve of the varistor has a high degree of non-linearity: the resistance is high at low voltage and low at high voltage.

It is believed that the varistor in the surge absorber device provides complete voltage protection, but the varistor or surge absorber has limited energy or power to withstand and does not provide sustained overvoltage protection. Sustained overvoltages can damage the protective devices (piezoresistors or surge absorbers) and cause damage to the equipment and may present a fire hazard.

The parts of the varistor that cannot provide protection are: the protection is required to be performed by a relay, a fuse-less breaker, and other means, such as an inrush current at startup, an overcurrent at short circuit, and a voltage dip. In addition, a few protection devices detect the power supply voltage, and if the power supply voltage exceeds a dangerous limit, the power supply is cut off by a relay.

In the design of electronic circuits, the term "surge" refers to an "abrupt electric wave" which is the same phenomenon as that expressed by "current pulse" and "voltage pulse". From the view of an oscilloscope, if a particularly prominent heterogeneous waveform or noise is observed in a stable current or voltage waveform and the waveform has an amplitude several times, even several tens or hundreds times larger than the normal amplitude, the current and the voltage are also several tens or hundreds times as large; we can decide it as a surge.

The source of the surge is a plurality of surge generating modes, and switching surge or natural lightning caused by circuit switching is generated; but the damage caused by the sudden wave from a thunderstorm occurs most seriously. When a surge occurs, if so-called surge protection is not provided in the circuit design, the circuit is easy to malfunction due to the surge, and a serious situation may cause damage of the circuit due to overload or a reduction in the life of electronic parts due to interference of the surge received for a long time.

The conventional surge absorption mechanism is displayed on the protector in the form of an indicator light after one or more times of absorption, for example, the color is green before the surge is absorbed, and the color is red after the surge is absorbed and short-circuited, so that maintenance personnel is reminded of replacing the protector.

In summary, the present invention is directed to a lamp protection device that can timely know whether a light source or a circuit is normal through a cloud after the light source or the circuit is damaged by an overvoltage or a surge.

Disclosure of Invention

The invention aims to provide a lamp protection device and a method thereof, which solve the problem that a light source or a component thereof cannot be replaced in time after being damaged by overvoltage or surge in the prior art.

In order to achieve the above object, the present invention discloses a lamp protection device, comprising: the controller is electrically connected with the light source, the protector is electrically connected with the controller, the power supply is electrically connected with the protector, an electric signal of the protector is sensed by a sensor of the controller, and when the electric signal is lower than a threshold value, the first transmitter transmits a warning signal to the remote server.

In an embodiment of the present invention, it further discloses that the lighting device further includes a driver, one end of which is electrically connected to the controller, and the other end of which is electrically connected to the light source.

In an embodiment of the present invention, it is also disclosed that the controller is provided with a pin, and the pin is electrically connected to the driver.

In an embodiment of the present invention, it is also disclosed that the electrical signal is lower than the threshold when the protector is short-circuited or open-circuited.

In one embodiment of the present invention, the first transmitter is connected to the remote server via bluetooth or WiFi.

In an embodiment of the present invention, it is also disclosed that the sensor is a voltage sensor.

In an embodiment of the present invention, it is also disclosed that the protector is a surge protector, a lightning protector or an overvoltage protector.

In order to achieve the above object, the present invention discloses a method for protecting a lamp, comprising the steps of: one end of a controller is connected with a light source, the other end of the controller is connected with a protector, and a sensor of the controller senses an electrical signal of the protector; the electrical signal is lower than a threshold value; the sensor converts the electrical signal into a digital signal and inputs the digital signal into the controller; the controller receives the digital signal; a first transmitter of the controller sends a warning signal to a remote server, and the controller senses whether the protector is damaged and sends the warning signal to the remote server to inform maintenance personnel of timely maintenance, so that the safety of the light source and circuits of the light source is improved.

In one embodiment of the present invention, it is also disclosed that the condition that the electrical signal is lower than a threshold value comprises short circuit or open circuit of the protector.

Drawings

FIG. 1: the invention is a schematic diagram of one embodiment of a lamp protection device and a method thereof;

FIG. 2: it is a schematic diagram of a first embodiment of the lamp protection device and method thereof of the present invention;

FIG. 3: the invention is a flow chart of one embodiment of the lamp protection device and the method thereof; and

FIG. 4: a first embodiment of the lamp protection device and the method thereof of the present invention is a flowchart.

[ brief description of the drawings ]

10 light source

20 controller

22 sensor

24 first transmitter

30 protector

40 power supply

42 power cord

44 signal line

50 remote server

60 driver

S1-S9 steps

Detailed Description

In order to provide a further understanding and appreciation for the structural features and advantages achieved by the present invention, the following detailed description of the presently preferred embodiments is provided:

the invention relates to a lamp protection device and a method thereof, which solve the problems that in the prior art, a protector absorbing surge or overvoltage can be displayed on the protector in the form of an indicator light after completing one or more operations, for example, the protector is a green indicator light before absorption and a red indicator light after absorption, so as to remind maintenance personnel to replace the protector, but the mode needs manpower to check, wastes time and labor, cannot replace the protector in time, and causes circuit damage and even light source damage.

Please refer to fig. 1, which is a schematic diagram of a lamp protection device and a method thereof according to an embodiment of the present invention. As shown in the figures, a lamp protection device of the present invention includes a light source 10, a controller 20, a protector 30, a power source 40 and a remote server 50, wherein the controller 20 is electrically connected to the light source 10, the protector 30 is electrically connected to the controller 20, the power source 40 is electrically connected to the protector 30, the power source 40 includes a power line 42 and a signal line 44, the power line 42 provides power for the protector 30, the controller 20 and the light source 10, and the signal line 44 provides signal transmission paths for the protector and the controller 20. The controller 20 is further connected to the remote server 50, a sensor 22 and a first transmitter 24 are disposed in the controller 20, the sensor 22 is electrically connected to the protector 30, and the first transmitter 24 is connected to the remote server 50. Specifically, the first transmitter 24 is connected to the remote server 50 through bluetooth, WIFI or radio waves.

Referring to fig. 3, which is a flowchart illustrating an embodiment of a lamp protection device and a method thereof according to the present invention, as shown in the drawing, in the embodiment, a method of a lamp protection device according to the present invention is further described, which includes the steps of:

s1: a sensor of the controller senses an electrical signal of the protector;

s3: the electrical signal is lower than a threshold value;

s5: the sensor converts the electrical signal into a digital signal and inputs the digital signal into the controller;

s7: the controller receives the digital signal; and

s9: a first transmitter of the controller sends an alert signal to a remote server.

In step S1, the sensor 22 of the controller 20 senses an electrical signal of the protector 30. The sensor 22 can be a voltage sensor, which is a device that converts the measured parameter into dc current and dc voltage and isolates and outputs an analog signal or a digital signal. The voltage sensor is used for measuring voltage or current signals with serious waveform distortion in a power grid, and can also measure non-sinusoidal waveforms such as square waves, triangular waves and the like. In this embodiment, the controller 20 is provided with the sensor 22, the sensor 22 detects the electrical signal of the protector 30, and the sensor 22 can repeatedly detect the electrical signal of the protector 30 within a certain time, for example, detect the electrical signal of the protector 30 once per minute.

In step S3, the electrical signal is lower than a threshold. In this embodiment, the protector 30 is electrically connected to the power source 40, and the electrical signal inside the protector 30 is within a certain range of value. The protector 30 can be selected from a surge protector, a lightning protector, or an overvoltage protector to protect a circuit, and generally, electronic components that easily generate a surge are mainly related to control of opening and closing of a circuit, and include a Relay (Relay), a switch (switch), a solenoid (solenoid), a Fuse (Fuse), an opening/closing control component including a thyristor (thyristor) in an IC, a switching regulator using a transistor, natural lightning, and the like, and the opening/closing control component is generally a source of the surge.

The working principle of the protector 30 is as follows: the protector 30 has a varistor disposed therein, which has a high impedance (several mega ohms) with respect to the electronic components to be protected when the varistor is in a ready state. When a momentary surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the protector 30 becomes low (only a few ohms) and causes a short circuit of the line, and thus the light source 10, electronic products, or more expensive components can be protected.

In step S5, the sensor 22 converts the electrical signal into a digital signal and inputs the digital signal to the controller 20. In the embodiment, when the protector 30 is short-circuited or broken, that is, when a transient surge voltage of the power source 40 is too large, the voltage-sensitive resistor impedance of the protector 30 becomes low and causes a short circuit; or a break caused by damage or other problems due to long-term use of the protector 30, the sensor 22 detects that the electrical signal is lower than a threshold value, and the sensor 22 converts the electrical signal into a digital signal by means of digital input and inputs the digital signal into the controller 20.

In step S7, the controller 20 receives the digital signal. In this embodiment, the sensor 22 of the receiver 20 receives the digital signal, and when the electrical signal of the protector 30 is not lower than the threshold, the sensor 22 continuously detects the electrical signal, but does not convert the electrical signal into the digital signal, until the protector 30 is short-circuited or broken, the sensor 22 converts the electrical signal into the digital signal and inputs the digital signal into the controller 20.

In step S9, a first transmitter 24 of the controller 20 sends an alert signal to the remote server 50. In this embodiment, after the sensor 22 of the controller 20 receives the Digital signal, the first transmitter 24 sends the warning signal to the remote server 50, and the first transmitter 24 sends the warning signal in a Digital Output (DO) manner, where the Digital Output means that after the sensor 22 receives the Digital signal, the sensor 22 generates the corresponding warning signal and sends the warning signal to the remote server 50 through the first transmitter 24, so as to notify external maintenance personnel, other warning devices, or other related applications, so that the maintenance personnel can timely know that the protector 30 is damaged and needs to be immediately maintained, thereby protecting the light source 10 and its circuits and preventing further damage.

Referring to fig. 2 and 4, which are a schematic diagram and a flowchart illustrating a first embodiment of a lamp protection device and a method thereof according to the present invention, as shown in the drawings, in the present embodiment, the lamp protection device further includes a driver 60, one end of the driver 60 is connected to the controller 20, the other end of the driver is connected to the light source 10, the controller 20 is further provided with a pin (not shown), and the pin is connected to the driver 60 and adjusts a voltage of the driver 60, so as to adjust a brightness or a switch of the light source 10.

In practice, besides switching surges caused by circuit switching, natural lightning pulses may also enter the power line by electromagnetic induction and capacitance of direct or close lightning strikes, on average about 30-35KA and possibly up to 100KA, where, in addition to high currents and energies, the main problem is that very high current rise rates (di/dt) may cause excessive voltage levels to be induced onto the conductor. In the present embodiment, please refer to fig. 2 and fig. 4, the lamp protection device of the present invention includes the following steps:

first, the sensor 22 of the controller 20 continuously detects the electrical signal of the protector 30, and terminates S5 when the protector 30 is not short-circuited or broken. When the protector 30 is short-circuited due to over-voltage or surge absorption or the protector 30 itself is damaged to cause disconnection, S5 is continued, the sensor 22 converts the electrical signal into a digital signal and inputs the digital signal into the controller 20, and then the first transmitter 24 of the controller 20 sends the warning signal to the remote server 50, in this embodiment, the first transmitter 24 is connected to the remote server 50 through bluetooth or WiFi. By the above steps, the maintenance personnel can quickly know whether the protector 30 is damaged, and then replace the protector 30, so as to protect the light source 10 and the circuit thereof, prolong the service life thereof and improve the safety.

In summary, according to the lamp protection device and the method thereof of the present invention, the protector 30 is disposed between the controller 20 and the power source 40, the protector 30 can absorb an overvoltage or an instantaneous surge voltage to protect a circuit, and the controller 20 continuously detects whether the protector 30 has a short circuit or an open circuit, when the protector 30 has a short circuit or an open circuit, the first transmitter 24 sends the warning signal to the remote server 50 to notify a maintenance person, so that the maintenance person can quickly know that the protector 30 is damaged and needs to be maintained in time, thereby achieving the purpose of protecting the light source 10 and the circuit, prolonging the service life of the lamp and the circuit, and improving the safety of using the lamp.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. A lamp protection device, comprising:

a light source;

a controller electrically connected to the light source, the controller having a sensor, a first transmitter of the controller being connected to a remote server;

a protector electrically connected to the controller, the sensor sensing an electrical signal of the protector; and

a power supply electrically connected to the protector;

wherein, when the electrical signal is lower than a threshold value, the first transmitter sends an alarm signal to the remote server.

2. A lamp protection device as recited in claim 1, further comprising: one end of the driver is electrically connected with the controller, and the other end of the driver is electrically connected with the light source.

3. The lamp protection device of claim 2, wherein said controller has a pin, said pin is electrically connected to said driver.

4. The lamp protection device of claim 1, wherein said electrical signal is below said threshold when said protector is shorted or open.

5. The lamp protection device of claim 1, wherein said first transmitter is connected to said remote server via bluetooth or WiFi.

6. A lamp protection device as claimed in claim 1, wherein said sensor is a voltage sensor.

7. A lamp protection device as claimed in claim 1, wherein the protector is a surge protector, a lightning protector or an overvoltage protector.

8. A method of protecting a lamp, comprising the steps of:

one end of a controller is electrically connected with a light source, the other end of the controller is electrically connected with a protector, and a sensor of the controller senses an electrical signal of the protector;

the electrical signal is lower than a threshold value;

the sensor converts the electrical signal into a digital signal and inputs the digital signal into the controller;

the controller receives the digital signal; and

a first transmitter of the controller sends an alert signal to a remote server.

9. The method of claim 8, wherein the condition that the electrical signal is below a threshold comprises the protector short circuiting or breaking.