Emergency lamp control circuit

By connecting the emergency detection module in the emergency lamp control circuit, the compatibility problem of emergency lamps and dimmers is solved, and the correct judgment is achieved when the power grid is out of power and the emergency lighting state is entered, improving the user experience.

CN222192611UActive Publication Date: 2024-12-17XIAMEN TOPSTAR LIGHTING
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Patent Information

Application Number
CN202420264421.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-02
Publication Date
2024-12-17
Estimated Expiration
2034-02-02

AI Technical Summary

Technical Problem

Existing emergency lamps cannot be compatible with dimmers, resulting in a misjudgment of power outage when the dimmer is turned off, which affects the user experience.

Method used

Design an emergency lamp control circuit, which provides a detection circuit by connecting the emergency detection modules at both ends of the dimmer to ensure that the lamp will not misjudgment of power outage when the dimmer is turned off, and can automatically determine whether it is based on whether there is electricity in the power grid. Enter the emergency light.

Benefits of technology

It achieves good compatibility between emergency lamps and dimmers, avoids accidentally entering the emergency lamp state, and ensures that the lamps are correctly judged and enter the emergency lamp state when the power grid is out of power.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of emergency lamps, in particular to an emergency lamp control circuit, which comprises a light modulator and an emergency detection module, the emergency detection module is connected in parallel at two ends of the light modulator, and one end of the emergency detection module connected with the light modulator is connected with a live wire end of commercial power. The other end of the emergency detection module connected with the light modulator is electrically connected with one end of the emergency lamp, and the other end of the emergency lamp is connected with the zero line end of the mains supply, so that when the light modulator is turned off, a detection loop can be provided for the emergency lamp. The emergency lamp used in combination with the dimmer cannot enter an emergency lighting state by mistake due to the fact that the voltage at the live wire end and the zero wire end of the mains supply cannot be detected; under the design condition, if the power grid is powered off, the emergency lamp connected to the dimmer loop cannot detect an electric signal, and the lamp smoothly enters an emergency lighting state.
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Description

Technical Field

[0001] The utility model relates to the technical field of emergency lamps, in particular to an emergency lamp control circuit. Background Art

[0002] Existing emergency lamps are not compatible with dimmers, especially downlight series products, which are basically used with dimmers; the existing lamps are in the following two situations:

[0003] 1. Once the live and neutral ends of the mains are powered off, the lamps will enter the emergency lighting state:

[0004] Existing emergency lamps basically determine whether to enter the emergency lighting state by detecting whether there is power at the live and neutral ends of the AC power. Once the live and neutral ends of the AC power are powered off, the lamps enter the emergency lighting state. The dimmer is connected in series to the live end of the AC power. Once the dimmer is turned off, the lamp product will mistakenly determine that it has entered the emergency state and light up, which is not what users want.

[0005] 2. When the live and neutral ends of the mains are out of power, the impedance of the grid coil at both ends of the live and neutral ends of the mains is determined to be within a certain range (<500KΩ), so that the lamp enters the emergency lighting state:

[0006] In the circuit with added dimmer, when the dimmer is in the off state, once the power is cut off, the impedance at both ends of the live and neutral wires of the AC power will become MΩ level due to the blocking of the dimmer, which cannot meet the requirements of the lamp to enter the required emergency lighting state by detecting that the impedance of the grid coil at both ends of the live and neutral wires of the AC power meets the conditions. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide an emergency lamp control circuit, which can realize that the emergency lamp is well compatible with the dimmer and can make the emergency lamp connected to the dimmer circuit automatically determine whether to enter the emergency lighting state according to whether there is power in the power grid.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0009] An emergency lighting control circuit comprises a dimmer and an emergency detection module, wherein the emergency detection module is connected in parallel at both ends of the dimmer, one end of the emergency detection module connected to the dimmer is connected to the live wire end of the mains, the other end of the emergency detection module connected to the dimmer is electrically connected to one end of the emergency lighting, and the other end of the emergency lighting is connected to the neutral wire end of the mains.

[0010] The beneficial effects of the utility model are:

[0011] This solution connects an emergency detection module in parallel at both ends of the dimmer. This module can provide a detection circuit for the emergency lamp when the dimmer is turned off, so that the emergency lamp used in conjunction with the dimmer will not mistakenly enter the emergency lighting state due to failure to detect the voltage at both ends of the live wire and the neutral wire of the mains. In this design, if the power grid (i.e. the mains) fails, the emergency lamp connected to the dimmer circuit cannot detect any electrical signal, and the lamp smoothly enters the emergency lighting state. In this way, the emergency lamp can be well compatible with the dimmer, and the emergency lamp connected to the dimmer circuit can automatically determine whether to enter the emergency lighting state according to whether there is power in the grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a connection block diagram of the emergency lighting control circuit according to the utility model;

[0013] Figure 2 A first circuit schematic diagram of an emergency detection module of an emergency lighting control circuit according to the utility model;

[0014] Figure 3 A second circuit schematic diagram of the emergency detection module of the emergency lighting control circuit according to the utility model;

[0015] Figure 4 A third circuit schematic diagram of the emergency detection module of the emergency lighting control circuit according to the utility model;

[0016] Description of labels:

[0017] 1. Dimmer; 2. Emergency detection module; 3. Emergency lighting. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0019] Please refer to Figure 1 , the technical solution adopted by the utility model is:

[0020] An emergency lighting control circuit comprises a dimmer and an emergency detection module, wherein the emergency detection module is connected in parallel at both ends of the dimmer, one end of the emergency detection module connected to the dimmer is connected to the live wire end of the mains, the other end of the emergency detection module connected to the dimmer is electrically connected to one end of the emergency lighting, and the other end of the emergency lighting is connected to the neutral wire end of the mains.

[0021] From the above description, it can be seen that the beneficial effects of the utility model are:

[0022] This solution connects an emergency detection module in parallel at both ends of the dimmer. This module can provide a detection circuit for the emergency lamp when the dimmer is turned off, so that the emergency lamp used in conjunction with the dimmer will not mistakenly enter the emergency lighting state due to failure to detect the voltage at both ends of the live wire and the neutral wire of the mains. In this design, if the power grid (i.e. the mains) fails, the emergency lamp connected to the dimmer circuit cannot detect any electrical signal, and the lamp smoothly enters the emergency lighting state. In this way, the emergency lamp can be well compatible with the dimmer, and the emergency lamp connected to the dimmer circuit can automatically determine whether to enter the emergency lighting state according to whether there is power in the grid.

[0023] Furthermore, the emergency detection module includes a resistor R1, a resistor R2 and a fuse resistor F1, one end of the fuse resistor F1 is electrically connected to one end of the dimmer and one end of the fuse resistor F1 is electrically connected to the live wire end of the AC power, the other end of the fuse resistor F1 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is respectively electrically connected to the other end of the dimmer and one end of the emergency lamp.

[0024] From the above description, it can be seen that the resistors R1 and R2 play a role in current limiting, and the fuse resistor F1 plays a role in disconnecting other devices to protect the current from overcurrent; when the dimmer is turned off, the power grid can provide a current loop through the fuse resistor F1, the resistor R1 and the resistor R2. The current in this loop is relatively small and is not enough to light up the emergency lamp, but it can provide a voltage signal to the emergency lamp, so that the emergency lamp can determine whether the live wire and the neutral wire of the mains are in an uninterrupted power supply state at this time.

[0025] Furthermore, the resistance value of the resistor R1 is equal to the resistance value of the resistor R2.

[0026] Furthermore, the emergency detection module includes a resistor R3, a capacitor C1 and a fuse resistor F2, one end of the fuse resistor F2 is electrically connected to one end of the dimmer and one end of the fuse resistor F2 is electrically connected to the live wire end of the AC power, the other end of the fuse resistor F2 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is respectively electrically connected to the other end of the dimmer and one end of the emergency lamp.

[0027] From the above description, it can be seen that the combination of resistor R3 and capacitor C1 plays a role in current limiting, and the fuse resistor F1 plays a role in disconnecting other devices to protect the current from overcurrent; when the dimmer is turned off, the power grid can provide a current loop through resistor R3, capacitor C1 and fuse resistor F2. The current in this loop is relatively small and is not enough to light up the emergency lamp, but it can provide a voltage signal to the emergency lamp, so that the emergency lamp can determine whether the live wire and the neutral wire of the mains are in an uninterrupted power state at this time.

[0028] Furthermore, the emergency detection module includes a resistor R4, a resistor R5, a fuse resistor F3, a rectifier bridge BD1 and a MOS tube Q1, the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the third end of the rectifier bridge BD1, the first end of the rectifier bridge BD1 is electrically connected to one end of the fuse resistor F3, the other end of the fuse resistor F3 is electrically connected to one end of the dimmer and the other end of the fuse resistor F3 is electrically connected to the live wire end of the AC power, the second end of the rectifier bridge BD1 is electrically connected to the other end of the dimmer and the emergency lamp respectively, and the fourth end of the rectifier bridge BD1 is grounded.

[0029] From the above description, it can be seen that when the dimmer is turned off, the power grid can provide a current loop through the insurance resistor F3, the rectifier bridge BD1, the resistor R4, the resistor R5 and the MOS tube Q1. The current in this loop is relatively small and is not enough to light up the emergency lamp, but it can provide a voltage signal to the emergency lamp, so that the emergency lamp can judge that the live and neutral ends of the mains are in a power-off state. Among them, the resistor R4 and the resistor R5 play a current limiting role in the loop, the insurance resistor F3 plays an overcurrent protection role for the entire module, the rectifier bridge BD1 converts AC power into DC power, and the MOS tube Q1 provides a main loop for the emergency module, which has the function of a switch. When the emergency lamp is not connected, the MOS tube Q1 is cut off due to the circuit blockage to prevent the lamp holder from being charged; when the emergency lamp is connected, the source of the MOS tube Q1 has a low potential, which will cause the MOS tube Q1 to be turned on, and the emergency detection module can provide a voltage signal for the emergency lamp.

[0030] Furthermore, the resistance value of the resistor R4 is equal to the resistance value of the resistor R5.

[0031] Furthermore, the emergency detection module also includes a resistor R6 and a resistor R7, one end of the resistor R6 is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1 respectively, the other end of the resistor R6 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the gate of the MOS tube Q1.

[0032] It can be seen from the above description that the resistors R6 and R7 are provided to provide a voltage loop for the gate of the MOS transistor Q1.

[0033] Furthermore, the emergency detection module also includes an electrolytic capacitor E1, one end of which is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1 respectively, and the other end of the electrolytic capacitor E1 is electrically connected to the source of the MOS tube and the other end of the electrolytic capacitor E1 is grounded.

[0034] From the above description, it can be known that the electrolytic capacitor E1 is provided to provide a stable voltage signal for the loop to ensure that the MOS tube Q1 can be continuously turned on.

[0035] Please refer to Figures 1 to 4 As shown, the first embodiment of the utility model is:

[0036] Please refer to Figure 1 An emergency lighting control circuit includes a dimmer 1 and an emergency detection module 2, wherein the emergency detection module 2 is connected in parallel at both ends of the dimmer 1, one end of the emergency detection module 2 connected to the dimmer 1 is connected to the live wire end of the mains, and the other end of the emergency detection module 2 connected to the dimmer 1 is electrically connected to one end of an emergency lighting fixture 3, and the other end of the emergency lighting fixture 3 is connected to the neutral wire end of the mains.

[0037] Please refer to Figure 2 The emergency detection module 2 includes a resistor R1, a resistor R2 and a fuse resistor F1 (the resistance value is 0Ω-100Ω), one end of the fuse resistor F1 is electrically connected to one end of the dimmer 1 and one end of the fuse resistor F1 is electrically connected to the live wire end of the mains, the other end of the fuse resistor F1 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is electrically connected to the other end of the dimmer 1 and one end of the emergency lamp 3 respectively.

[0038] The resistance value of the resistor R1 is equal to the resistance value of the resistor R2, both of which are 2.5 MΩ.

[0039] Please refer to Figure 3 The emergency detection module 2 includes a resistor R3 (resistance value is 2.5MΩ), a capacitor C1 (capacitance value is 1nF) and a fuse resistor F2 (resistance value is 0Ω-100Ω), one end of the fuse resistor F2 is electrically connected to one end of the dimmer 1 and one end of the fuse resistor F2 is electrically connected to the live wire end of the mains, the other end of the fuse resistor F2 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is electrically connected to the other end of the dimmer 1 and one end of the emergency lamp 3 respectively.

[0040] Please refer to Figure 4The emergency detection module 2 includes a resistor R4, a resistor R5, a fuse resistor F3 (resistance value is 0Ω-100Ω), a rectifier bridge BD1 (whose working current is 0.5A-2A and working voltage is 200V-1500V) and a MOS tube Q1 (whose working current is 0.1A-4A and working voltage is 200V-1500V), the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the third end of the rectifier bridge BD1, the first end of the rectifier bridge BD1 is electrically connected to one end of the fuse resistor F3, the other end of the fuse resistor F3 is electrically connected to one end of the dimmer 1 and the other end of the fuse resistor F3 is electrically connected to the live wire end of the mains, the second end of the rectifier bridge BD1 is electrically connected to the other end of the dimmer 1 and the emergency lamp 3 respectively, and the fourth end of the rectifier bridge BD1 is grounded.

[0041] The resistance value of the resistor R4 is equal to the resistance value of the resistor R5, both of which are 2 MΩ.

[0042] Please refer to Figure 4 The emergency detection module 2 also includes a resistor R6 (resistance value is 2.5MΩ) and a resistor R7 (resistance value is 2.5MΩ), one end of the resistor R6 is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1 respectively, the other end of the resistor R6 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the gate of the MOS tube Q1.

[0043] Please refer to Figure 4 The emergency detection module 2 also includes an electrolytic capacitor E1, one end of which is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1, and the other end of the electrolytic capacitor E1 is electrically connected to the source of the MOS tube and the other end of the electrolytic capacitor E1 is grounded.

[0044] In summary, the utility model provides an emergency lighting control circuit, by connecting an emergency detection module in parallel at both ends of the dimmer. This module can provide a detection circuit for the emergency lighting when the dimmer is turned off, so that the emergency lighting used in combination with the dimmer will not mistakenly enter the emergency lighting state due to failure to detect the voltage at both ends of the live wire and the neutral wire of the mains. In this design, if the power grid (i.e. the mains) fails, the emergency lighting connected to the dimmer circuit cannot detect any electrical signal, and the lighting smoothly enters the emergency lighting state. In this way, the emergency lighting can be well compatible with the dimmer, and the emergency lighting connected to the dimmer circuit can automatically determine whether to enter the emergency lighting state according to whether there is power in the power grid.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An emergency lighting control circuit, It is characterized in that It includes a dimmer and an emergency detection module, the emergency detection module is connected in parallel at both ends of the dimmer, one end of the emergency detection module connected to the dimmer is connected to the live wire end of the mains, the other end of the emergency detection module connected to the dimmer is electrically connected to one end of the emergency lamp, and the other end of the emergency lamp is connected to the neutral wire end of the mains.

2. The emergency lighting control circuit according to claim 1, It is characterized in that The emergency detection module includes a resistor R1, a resistor R2 and a fuse resistor F1, one end of the fuse resistor F1 is electrically connected to one end of the dimmer and one end of the fuse resistor F1 is electrically connected to the live wire end of the AC power, the other end of the fuse resistor F1 is electrically connected to one end of the resistor R2, the other end of the resistor R2 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is electrically connected to the other end of the dimmer and one end of the emergency lamp respectively.

3. The emergency lighting control circuit according to claim 2, It is characterized in that The resistance value of the resistor R1 is equal to the resistance value of the resistor R2.

4. The emergency lighting control circuit according to claim 1, It is characterized in that The emergency detection module includes a resistor R3, a capacitor C1 and a fuse resistor F2, one end of the fuse resistor F2 is electrically connected to one end of the dimmer and one end of the fuse resistor F2 is electrically connected to the live wire end of the AC power, the other end of the fuse resistor F2 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to one end of the capacitor C1, and the other end of the capacitor C1 is electrically connected to the other end of the dimmer and one end of the emergency lamp respectively.

5. The emergency lighting control circuit according to claim 1, It is characterized in that The emergency detection module includes a resistor R4, a resistor R5, a fuse resistor F3, a rectifier bridge BD1 and a MOS tube Q1, the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is electrically connected to one end of the resistor R5, the other end of the resistor R5 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the third end of the rectifier bridge BD1, the first end of the rectifier bridge BD1 is electrically connected to one end of the fuse resistor F3, the other end of the fuse resistor F3 is electrically connected to one end of the dimmer and the other end of the fuse resistor F3 is electrically connected to the live wire end of the AC power, the second end of the rectifier bridge BD1 is electrically connected to the other end of the dimmer and the emergency lamp respectively, and the fourth end of the rectifier bridge BD1 is grounded.

6. The emergency lighting control circuit according to claim 5, It is characterized in that The resistance value of the resistor R4 is equal to the resistance value of the resistor R5.

7. The emergency lighting control circuit according to claim 5, It is characterized in that The emergency detection module also includes a resistor R6 and a resistor R7, one end of the resistor R6 is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1 respectively, the other end of the resistor R6 is electrically connected to one end of the resistor R7, and the other end of the resistor R7 is electrically connected to the gate of the MOS tube Q1.

8. The emergency lighting control circuit according to claim 5, It is characterized in that The emergency detection module also includes an electrolytic capacitor E1, one end of which is electrically connected to the other end of the resistor R4 and the third end of the rectifier bridge BD1 respectively, and the other end of the electrolytic capacitor E1 is electrically connected to the source of the MOS tube and the other end of the electrolytic capacitor E1 is grounded.