Low-voltage safety control system

Abstract

To solve a defect of an existing outdoor LED light using a 220V main power source in operation.SOLUTION: A time controller 1, a low-voltage controller 2 electrically connected to the time controller 1, a first relay 3 electrically connected to the time controller 1 and the low-voltage controller 2, a second relay 4 electrically connected to the first relay 3, a third relay 7 electrically connected to the first relay 3 and the second relay 4, a charger 5 electrically connected to the second relay 4, a storage battery 6 electrically connected to the second relay 4 and the charger 5, and an LED light controller 8 electrically connected to the second relay 4 and the third relay 7; And an LED light unit 9 electrically connected to the LED light controller 8, wherein the first relay 3 switches the transmission path to the time controller 1 or the low-voltage controller 2, and the second relay 4 switches between connecting the first relay 3 to the charger 5 and connecting the storage battery 6 to the LED light controller 8.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a low-voltage safety control system, and more particularly to a system for safely controlling an LED light unit or the like at low voltage. [Background technology]

[0002] As people increasingly demand the overall artistry and aesthetics of iconic buildings, architectural designs must integrate elements such as architecture, lighting, and the surrounding environment so that the building can express the commercial value and cultural meaning behind it. New types of energy-saving LED lights are widely used in various architectural decorations due to their advantages such as low power consumption and versatile color changes. However, these outdoor LED lights currently use a 220V mains power supply during operation, which poses safety risks.

[0003] Ohm's law (I = U / R) dictates that the magnitude of the current flowing through the human body is related to the applied voltage and the body's resistance. The human body's resistance is determined by the resistance of the body itself, as well as the resistance of other components such as clothing, shoes, and pants. While the human body's resistance typically reaches 2 kΩ, factors such as moist, sweaty skin, conductive dust particles, increased contact area and pressure with a charged object, and damp or oily clothing, shoes, and socks can all reduce the body's resistance. The magnitude of the current flowing through the human body cannot usually be calculated in advance. Therefore, safe currents are often not used to determine safety conditions, but safe voltages are used for estimation. Under normal circumstances, i.e., in dry environments where the risk of electric shock is higher, the safe voltage is 24 V. In high-risk environments (such as welding and maintenance on metal containers or pipelines), the safe voltage is set at 12 V, which limits the current flowing through the human body to a smaller range and ensures safety. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to provide a low voltage safety control system that can solve the deficiencies of existing outdoor LED lights that use 220V mains power during operation, which poses a potential safety hazard. [Means for solving the problem]

[0005] In order to achieve the above object, the low-voltage safety control system of the present invention comprises a time controller, a low-voltage controller electrically connected to the time controller, a first relay electrically connected to the time controller and the low-voltage controller, a second relay electrically connected to the first relay, a third relay electrically connected to the first relay and the second relay, a charger electrically connected to the second relay, a storage battery electrically connected to the second relay and the charger, an LED light controller electrically connected to the second relay and the third relay, and an LED light unit electrically connected to the LED light controller, wherein the first relay switches the transmission path to the time controller or the low-voltage controller, and the second relay switches between connecting the first relay to the charger or connecting the storage battery to the LED light controller.

[0006] The time controller may be a time relay, the low voltage controller may be a PLC, and the first relay and the third relay may be double-pole double-throw relays.

[0007] Alternatively, the first relay may be a 220V double-pole double-throw relay, the third relay may be a 12V double-pole double-throw relay, the second relay may be a 12V double-pole double-throw relay, and the storage battery may be a 12V storage battery.

[0008] Further, a first common connector and a first coil connector of the time controller are commonly connected to a live conductor of a 220V main power supply, a second common connector and a second coil connector of the time controller are connected to a neutral conductor of the 220V main power supply, a first normally closed contact joint and a second normally closed contact joint of the time controller are respectively connected to two power joints of a low-voltage controller, a first normally open contact joint of the time controller is respectively connected to a first coil joint, a first normally open contact joint of a first relay and a first normally open contact joint of a first relay are commonly connected, a second normally open contact joint of the time controller is respectively connected to a second coil joint and a second normally open contact joint of the first relay, the joints being connected to each other, two signal output connectors of the low-voltage controller are connected to a first normally open contact connector and a second normally open contact connector of the first relay, and a first common connector of the first relay is respectively connected to a first coil connector of a second relay, one of a second group of normally open contact connectors of a second relay, and a first common connector of a third relay. the second common joint of the first relay is connected to the second coil joint of the second relay and one of the first group of normally open contact joints of the second relay and the third relay, respectively, the second common connectors are connected to each other, the two power connectors of the charger are connected to the other of the first group of normally open contact connectors of the second relay and the other of the second group of normally open contact connectors of the second relay, the two power terminals of the storage battery are connected to one of the first group of normally closed contact joints of the second relay and one of the second group of normally closed contact joints of the second relay and the other of the first group, one of the normally closed contact joints is connected to the first coil joint of the third relay and the power joint of the LED light controller, respectively, and the second group of normally closed contact joints of the second relay, the other of the connectors is connected to the second coil connector of the third relay and the other power connector of the LED light controller, respectively, and the two control signal input terminals of the LED light controller are connected to the first normally open contact joint and the second normally open contact joint of the third relay, respectively.

[0009] The LED light unit may include a plurality of LED lights connected in series or in parallel. [Effects of the Invention]

[0010] The LED light unit of this invention charges the storage battery when not in use during the day, and switches to a nighttime operating mode, using the storage battery to supply power. The battery voltage of the LED light unit is 12V, which is low power supply voltage, poses no safety hazard, and the power supply distance can reach more than 1 kilometer without voltage drop problems. Moreover, the control is more flexible and diverse. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a connection block diagram of a low-voltage safety control system according to the present invention. [Figure 2] 1 is a schematic diagram for explaining the daytime operation principle of the low-voltage safety control system according to the present invention; FIG. [Figure 3] 1 is a schematic diagram for explaining the operating principle of the low-voltage safety control system according to the present invention at night. [Figure 4] FIG. 2 is a specific connection diagram of the low-voltage safety control system shown in FIG. [Figure 5] FIG. 3 is a specific connection diagram of the low-voltage safety control system shown in FIG. 2. [Figure 6] FIG. 4 is a specific connection diagram of the low-voltage safety control system shown in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, the embodiments of the present invention will be clearly and completely described with reference to the drawings. Of course, the described embodiments are only a part of the present invention, and are not all of the present invention. Based on the embodiments of the present invention, all other embodiments that can be obtained without the need for creative work by ordinary skilled artisans shall also fall within the scope of protection of the present invention.

[0013] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0014] Referring to FIG. 1, the low voltage safety control system according to the present invention includes a time controller 1, a first relay 3, a second relay 4, a third relay 7, a low voltage controller 2, a charger 5, a storage battery 6, an LED light controller 8, and an LED light unit 9. The time controller 1 is electrically connected to the low-voltage controller 2 and the first relay 3. The first relay 3 is also electrically connected to the low-voltage controller 2. The second relay 4 and the third relay 7 are electrically connected to the charger 5, the storage battery 6, and the LED light controller 8, respectively. The third relay 7 is also electrically connected to the LED light controller 8. The first relay 3 or the second relay 4 is used to control the back-end LED light unit 9, and the first relay 3 is used to switch between the time controller 1 and the second relay. The low-voltage controller 2 is connected to the back-end circuit, and the second relay 4 is used to switch whether the first relay 3 is connected to the charger 5 or the storage battery 6. The third relay 7 is used to switch whether the first relay 3 is connected to the LED light controller 8.

[0015] Of these, the time controller 1 can select a time relay, the low voltage controller 2 can select a PLC, and the first relay 3 and the third relay 7 can select double-pole double-throw relays. Specifically, the first relay 3 is a 220V double-pole double-throw relay, the third relay 7 is a 12V double-pole double-throw relay, the second relay 4 is a 220V relay, and the storage battery 6 is a 12V storage battery. The LED light unit 9 includes a plurality of LED lights connected in series or in parallel.

[0016] Referring to Figure 4, the specific wiring method for each component is as follows: The first common connector and the first coil connector of the time controller 1 are commonly connected to the live line of the 220V main power supply, and the second common connector is connected to the live line of the 220V main power supply. The second coil connector of the time controller 1 is connected to the neutral line of the 220V main power supply, and the first normally closed contact connector and the second normally closed contact connector of the time controller 1 are respectively connected to two low-voltage power supplies. The first normally open contact joints of the low-voltage controller 2 and the time controller 1 are respectively connected to the first coil joint and the first normally open contact joint of the first relay 3, and the second normally open contact joint of the time controller 1 is a normally open contact joint. The contact joints are respectively connected to the second coil joint and the second normally open contact joint of the first relay 3, and the two signal output joints of the low-voltage controller 2 are connected to the first relay 3. The second normally open contact joint is connected, and the first common joint of the first relay 3 is connected to the first coil joint of the second relay 4 and the third joint of the second relay 4, respectively. The first common joint of the third relay 7 and the first common joint of the first relay 3 are commonly connected, and the second common joint of the first relay 3 is connected to the second coil joint and the second coil joint of the second relay 4, respectively. The normally open contact joint of the second relay 4 is commonly connected to the second common joint of the third relay 7, and the two power joints of the charger 5 are each connected to the third joint of the second relay 4. One of the normally open contact joints is connected to the other of the second group of normally open contact joints of the second relay 4, and the two power terminals of the storage battery 6 are each connected to the third terminal of the second relay 4. The group of normally closed contact joints is connected to one of the second group of normally closed contact joints of the second relay 4, and the other of the first group of normally closed contact joints of the second relay 4 is connected to the other group of normally closed contact joints. The first coil connector of the third relay 7 is connected to the power connector of the LED lighting controller, and the other of the normally closed contact connectors of the second group of the second relay 4 is connected to the third relay 7.The second coil connectors are each connected to another power connector of the LED light controller 8, and the two control signal input terminals of the LED light controller 8 are each connected to the first normally open contact connector and the second normally open contact connector of the third relay 7, respectively.

[0017] Next, the operating principle of the low voltage safety control system according to the present invention will be described.

[0018] 2 and 5, during the daytime, the two common terminals and coil terminal of the time controller 1 are connected to a power source, and the time controller 1 controls the coil to energize according to a set time. The contacts switch to two normally open contacts, the low-voltage controller 2 loses power, and power is supplied to the two movable contacts of the first relay 3. The two sets of normally open contacts switch, the coil of the second relay 4 is energized, and the two movable contacts of the second relay 4 switch to two sets of normally open contacts. The main power source passes through the time controller 1, the first relay 3, and the second relay 4 in sequence. The second relay 4 supplies power to the charger 5, which then charges the storage battery 6. The LED light controller 8 is powered off and in a non-operating state, and the LED light unit 9 does not operate.

[0019] Referring to Figures 3 and 6, at night, when the time controller 1 presses the set time, the coil loses power and stops operating, switching the two movable contacts of the time controller 1 to two normally closed contacts. When the low-voltage controller 2 is powered on and operating, a control signal is sent, causing the coil of the first relay 3 to lose power and switching the two movable contacts of the first relay 3 to two normally closed contacts. To control the signal, both ends of the coil of the second relay 4 are connected, the voltage becomes low, and the two movable contacts of the second relay 4 switch to two sets of normally closed contacts. The storage battery supplies power to the LED light controller 8 via the second relay 4, and the storage battery 6 also supplies power to the third relay 7, supplying power to both ends of the coil and the two movable contacts of the third relay 7. The control signal from the low-voltage controller 2 is transmitted to the LED light unit 9 via the first relay 3 and the third relay 7, where it is used to adjust the brightness and control the light.

[0020] The LED light unit of this invention charges the storage battery when not in use during the day, and switches to a nighttime operating mode to power the LED light unit using the storage battery. The low 12V power supply voltage poses no safety hazards. Its high safety allows for a power supply distance of over 1 kilometer. There are no voltage drops during use due to the low-voltage, safe power supply, and control is more flexible and diverse.

[0021] The above are merely preferred embodiments of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are intended to be included in the present invention. [Explanation of symbols]

[0022] 1 Time Controller 2 Low Voltage Controller 3. First Relay 4. Second Relay 5 charger 6. Storage battery 7. Third Relay 8 LED light controllers 9 LED light units

Claims

1. A time controller, a low voltage controller electrically connected to the time controller; a first relay electrically connected to the time controller and the low-voltage controller; a second relay electrically connected to the first relay; a third relay electrically connected to the first relay and the second relay; a charger electrically connected to the second relay; a storage battery electrically connected to the second relay and the charger; an LED light controller electrically connected to the second relay and the third relay; an LED light unit electrically connected to the LED light controller; the first relay switches the transmission path to the time controller or the low-voltage controller; The second relay switches the first relay to either connect the charger or connect the storage battery to the LED light controller.

2. 2. The low-voltage safety control system according to claim 1, wherein the time controller is a time relay, the low-voltage controller is a PLC, and the first relay and the third relay are double-pole double-throw relays.

3. 3. The low-voltage safety control system according to claim 2, wherein the first relay is a 220V double-pole double-throw relay, the third relay is a 12V double-pole double-throw relay, the second relay is a 12V double-pole double-throw relay, and the storage battery is a 12V storage battery.

4. The first common connector and the first coil connector of the time controller are commonly connected to the live line of the 220V main power supply, the second common connector and the second coil connector of the time controller are connected to the neutral line of the 220V main power supply, the first normally closed contact joint and the second normally closed contact joint of the time controller are respectively connected to two power joints of the low voltage controller, the first normally open contact joint of the time controller are respectively connected to the first coil joint, the first normally open contact joint of the first relay and the first normally open contact joint of the first relay. the two signal output connectors of the low-voltage controller are connected to the first normally open contact connector and the second normally open contact connector of the first relay; the first common connector of the first relay is connected to the first coil connector of the second relay, one of the second group of normally open contact connectors of the second relay, and the first common connector of the third relay; the second common connector of the first relay is connected to the second coil connector of the second relay, one of the second group of normally open contact connectors of the second relay, and the third relay; the other of the normally closed contact joints is connected to the first coil joint of the third relay and the power supply joint of the LED light controller, respectively, and the other of the normally closed contact joints of the second relay and the second group of normally open contact joints of the third relay; the other of the normally closed contact joints is connected to the second coil joint of the third relay and the power supply joint of the LED light controller, respectively, and the other of the normally closed contact joints of the second relay and the second group of normally open contact joints of the third relay; the other of the normally closed contact joints is connected to the second coil connector of the third relay and the other power supply connector of the LED light controller, respectively; and the two control signal input terminals of the LED light controller are connected to the first normally open contact joint and the second normally open contact joint of the third relay, respectively.

5. 2. The low-voltage safety control system according to claim 1, wherein the LED light unit includes a plurality of LED lights connected in series or in parallel.

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