CN219514253U - Misconnection-preventing centralized illumination interface circuit and emergency lamp - Google Patents
Misconnection-preventing centralized illumination interface circuit and emergency lamp Download PDFInfo
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- CN219514253U CN219514253U CN202320601568.3U CN202320601568U CN219514253U CN 219514253 U CN219514253 U CN 219514253U CN 202320601568 U CN202320601568 U CN 202320601568U CN 219514253 U CN219514253 U CN 219514253U
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- misconnection
- interface circuit
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- power supply
- illumination interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a concentrated illumination interface circuit capable of preventing misconnection and an emergency lamp. The anti-misconnection centralized illumination interface circuit is electrically connected with a power supply circuit and a singlechip, the power supply circuit is provided with two output ends, and the anti-misconnection centralized illumination interface circuit comprises a filtering module and a protection module. The protection module comprises a positive thermistor and a transient voltage suppressor, one end of the positive thermistor is electrically connected to an output end of the power supply circuit, the other end of the positive thermistor is simultaneously electrically connected to one end of the transient voltage suppressor and the filtering module, the other end of the transient voltage suppressor is electrically connected to the other output end of the power supply circuit, the transient voltage suppressor is provided with a conducting voltage which is larger than the normal working voltage of the concentrated illumination interface circuit, and the filtering module is electrically connected to the singlechip.
Description
Technical Field
The utility model relates to the technical field of concentrated illumination, in particular to a concentrated illumination interface circuit capable of preventing misconnection and an emergency lamp.
Background
The fire emergency lighting system mainly comprises accident emergency lighting, emergency exit signs and indicator lights, and can guide trapped people to evacuate and escape after a fire disaster occurs and a normal lighting power supply is cut off.
The fire emergency lighting system can encode each emergency lamp and control the emergency lamps through the controller, when one emergency lamp fails, the controller can know the state and the position of the emergency lamp, and thus maintenance staff can conveniently overhaul the emergency lamp.
The communication interface and the power supply interface of the existing emergency lamp are combined together, and the communication circuit in the emergency lamp can supply power together when the emergency lamp supplies power, and the power supply voltage of the existing communication circuit is about 36V. However, the power supply of the emergency lamp is 220V in the market, when an operator does not carefully check the parameters of the emergency lamp, the emergency lamp can be directly connected to 220V mains supply, and an excessive voltage flows into the lamp, so that electronic elements in the lamp can be burnt out, and the emergency lamp cannot be used.
Disclosure of Invention
An advantage of the present utility model is to provide an anti-misconnection centralized lighting interface circuit, in which a transient voltage suppressor can short circuit other electronic components in a circuit when the voltage of a power supply circuit is too high, so as to avoid burning out other electronic components in the circuit, in which the resistance of a positive thermistor can be increased along with the increase of temperature, so that the current in the power supply circuit, the positive thermistor and the transient voltage suppressor can be reduced.
An advantage of the present utility model is to provide an anti-misconnection concentrated illumination interface circuit in which the positive thermistor can automatically return to an initial state after a change in resistance without requiring manual replacement of the positive thermistor.
One advantage of the present utility model is to provide a misconnection-preventing concentrated illumination interface circuit, wherein the rectifying module is adapted to adjust the polarity of the electrical signal input to the singlechip by the power supply circuit, so that the misconnection-preventing concentrated illumination interface circuit supplies power to the singlechip with a fixed polarity.
The utility model has the advantage that the emergency lamp is provided, wherein the misconnection-preventing concentrated lighting interface circuit is electrically connected with the singlechip of the emergency lamp, so that the emergency lamp cannot be burnt out due to overlarge external power supply voltage.
In order to achieve at least one of the above advantages of the present utility model, the present utility model provides an anti-misconnection centralized lighting interface circuit, the anti-misconnection centralized lighting interface circuit is electrically connected to a power supply circuit and a single chip microcomputer, the power supply circuit has two output ends, and the anti-misconnection centralized lighting interface circuit includes:
a filtering module; and
the protection module comprises a positive thermistor and a transient voltage suppressor, one end of the positive thermistor is electrically connected to an output end of the power supply circuit, the other end of the positive thermistor is simultaneously electrically connected to one end of the transient voltage suppressor and the filtering module, the other end of the transient voltage suppressor is electrically connected to the other output end of the power supply circuit, the transient voltage suppressor is provided with a conducting voltage which is larger than the normal working voltage of the misconnection-preventing concentrated illumination interface circuit, and the filtering module is electrically connected to the singlechip so that when the voltage input to the positive thermistor by the power supply circuit is overlarge, the power supply circuit, the positive thermistor and the transient voltage suppressor form a loop.
According to an embodiment of the utility model, the filtering module comprises two filtering capacitors, the two filtering capacitors are connected in series and then connected in parallel to two ends of the transient voltage suppressor, and are electrically connected with the singlechip at the same time, and one ends of the two filtering capacitors which are electrically connected with each other are grounded.
According to an embodiment of the present utility model, the misconnection-preventing centralized lighting interface circuit further includes a rectifying module, where the rectifying module is configured to electrically connect the filtering module and the singlechip.
According to an embodiment of the present utility model, the rectifying module is implemented as a rectifying bridge, and the rectifying bridge has two ac ends and two dc ends, where the two ac ends are electrically connected to two ends of the filtering module, and the two dc ends are electrically connected to the single chip microcomputer.
According to an embodiment of the present utility model, the misconnection-preventing concentrated illumination interface circuit further includes a zener diode, wherein a cathode of the zener diode is electrically connected to an anode of the dc terminal of the rectifier bridge, and an anode of the zener diode is electrically connected to a cathode of the dc terminal of the rectifier bridge.
According to an embodiment of the present utility model, the misconnection-preventing centralized lighting interface circuit further includes a down-current resistor, and the down-current resistor is electrically connected to the cathode of the zener diode and the anode of the dc terminal of the rectifier bridge.
According to an embodiment of the present utility model, the misconnection-preventing centralized lighting interface circuit further includes a shunt resistor, and two ends of the shunt resistor are correspondingly and electrically connected to two dc ends of the rectifier bridge.
According to one embodiment of the utility model, the model of the transient voltage suppressor is SMB J40CA.
According to an embodiment of the present utility model, the regulated voltage of the zener diode is 43V.
To achieve at least one of the above advantages, the present utility model provides an emergency light fixture comprising:
a single chip microcomputer;
an LED lamp; and
the misconnection-preventing concentrated illumination interface circuit according to any one of the above embodiments, wherein the single-chip microcomputer is electrically connected with the LED lamp, and the single-chip microcomputer is electrically connected with an external power supply circuit through the misconnection-preventing concentrated illumination interface circuit.
Drawings
Fig. 1 shows a block diagram of a misconnection-preventing concentrated illumination interface circuit according to the present utility model.
Fig. 2 shows a specific circuit diagram of the misconnection-preventing concentrated illumination interface circuit according to the present utility model.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Referring to fig. 1 to 2, a misconnection-preventing concentrated illumination interface circuit according to a preferred embodiment of the present utility model will be described in detail below. The misconnection-preventing centralized lighting interface circuit is arranged at the power connection port of an emergency lamp, the misconnection-preventing centralized lighting interface circuit is electrically connected with a power supply circuit 900 and a single chip microcomputer 800, and the power supply circuit 900 is provided with two output ends which are suitable for blocking the input of an electric signal with excessive voltage to the single chip microcomputer 800.
The anti-misconnection centralized lighting interface circuit comprises a protection module 10 and a filtering module 20, the protection circuit 10 comprises a positive thermistor 11 and a transient voltage suppressor 12, one end of the positive thermistor 11 is electrically connected to an output end of the power supply circuit 900, the other end of the positive thermistor 11 is simultaneously electrically connected to one end of the transient voltage suppressor 12 and the filtering module 20, the other end of the transient voltage suppressor 12 is electrically connected to the other output end of the power supply circuit 900, the transient voltage suppressor 12 has a conducting voltage which is larger than the normal working voltage of the anti-misconnection centralized lighting interface circuit, and the filtering module 20 is electrically connected to the single chip microcomputer 800. When the voltage input to the positive thermistor 11 and the transient voltage suppressor 12 by the power supply circuit 900 is too large, the power supply circuit 900, the positive thermistor 11, and the transient voltage suppressor 12 form a loop.
In normal use, the power supply circuit 900 provides a normal voltage to the positive thermistor 11, the on voltage of the transient voltage suppressor 12 is greater than the normal voltage provided by the power supply circuit 900, the transient voltage suppressor 12 is not turned on, and the positive thermistor 11 can transmit an electrical signal to the filter module 20 and the singlechip 800, so that the electrical signal can be normally transmitted. If the voltage of the power supply circuit 900 increases, the current flowing through the positive thermistor 11 increases, at this time, the temperature of the positive thermistor 11 increases, and when the temperature increases, the resistance of the positive thermistor 11 increases synchronously with the temperature due to the positive temperature coefficient of the positive thermistor 11, so that the resistance of the positive thermistor 11 is larger, and the current flowing into the filter module 20 from the power supply circuit 900 can be limited, meanwhile, when the high-voltage signal passes through the transient voltage suppressor 12, the transient voltage suppressor 12 is conducted, and the transient voltage suppressor 12 can short the filter module 20, so that the high-voltage electrical signal is not transmitted to the filter module 20 and the single chip microcomputer 800, and at this time, the high-voltage power supply circuit 900, the positive thermistor 11 and the transient voltage suppressor 12 form a loop, so that the electronic components in the circuit are not damaged. Therefore, when the operator accesses the 220V high voltage to the anti-misconnection centralized lighting interface circuit, the positive thermistor 11 and the transient voltage suppressor 12 can protect the filter module 20 and the single chip microcomputer 800, and can avoid damaging electronic components, thereby reducing loss. In addition, when the power supply circuit 900 outputs the normal voltage, the protection module 10 has less influence on the filtering module 20 and the single chip microcomputer 800.
The transient voltage suppressor 12 is implemented as a TVS model SMB J40CA. When the voltage reaches the conducting value of the transient voltage suppressor 12, the transient voltage suppressor 12 can be conducted in a very short time, so that subsequent electronic elements in the circuit can be rapidly short-circuited, and damage of surge current or surge voltage to other electronic elements in the circuit can be avoided.
The tvs 12 are capable of bi-directional conduction. When the voltage of the power supply circuit 900 is too large, the transient voltage suppressor 12 can be in a conducting state no matter which output end of the power supply circuit 900 is the positive end, so that subsequent electronic elements in the short circuit of the transient voltage suppressor 12 can be ensured, and the burning of other electronic elements by high-voltage electric signals is avoided.
In a traditional circuit, a fuse resistor is generally only adopted to prevent current overload in the circuit, and when the temperature of the fuse resistor reaches a certain value, the fuse resistor fuses to cut off the circuit so as to avoid the influence of excessive current on electronic elements in the circuit. However, the fuse resistor cannot be reused after being fused, and needs to be manually replaced, so that the labor intensity of maintenance personnel is necessarily increased.
According to the utility model, the resistor of the positive thermistor 11 is adopted, and when the current is too large, the resistance of the positive thermistor 11 can synchronously rise along with the temperature when the positive thermistor 11 heats, so that the purpose of reducing the current in a circuit is achieved. When the voltage provided by the power supply circuit 900 is normal, and the temperature of the positive thermistor 11 is reduced, the resistance of the positive thermistor 11 can return to a normal level, and the automatic recovery characteristic is achieved, so that the problem that the traditional fusing resistor needs to be replaced manually without replacing the electronic element in the anti-misconnection centralized lighting interface circuit can be avoided.
The filter module 20 includes two filter capacitors 21, the two filter capacitors 21 are connected in series and then connected in parallel to two ends of the transient voltage suppressor 12, and are electrically connected to the single chip microcomputer 800, and one end of each of the two filter capacitors 21 is grounded. Under the action of the two filter capacitors 21, the filter capacitors 21 can filter the high-frequency interference signals in the power supply circuit 900, so that the influence of the high-frequency interference signals on the singlechip 800 can be avoided, and the normal operation of the circuit is ensured.
The anti-misconnection centralized lighting interface circuit further comprises a rectification module 30, the rectification module 30 is electrically connected with the filtering module 20 and the single-chip microcomputer 800, and the rectification module 30 can output direct current signals with fixed polarity, so that the power supply circuit 900 is ensured to be stably fixed to the single-chip microcomputer 800.
The rectifying module 30 is implemented as a rectifying bridge, and the rectifying bridge has two ac ends 31 and two dc ends 32, where the two ac ends 31 are electrically connected to two ends of the filtering module 20, and the two dc ends 32 are electrically connected to the single-chip microcomputer 800. Under the action of the rectifier bridge, the polarity of the power supply circuit 900 does not need to be distinguished, and the rectifier bridge can change the polarity of the power supply circuit 900 into a direct current signal with fixed polarity, so as to ensure that the power supply circuit 900 stably supplies power to the singlechip 800. Therefore, when an operator accesses the external circuit into the protection module 10, the polarities of the two ends of the external circuit do not need to be distinguished, so that the emergency lamp with the error-connection-preventing centralized illumination interface circuit can be conveniently and quickly connected in the circuit.
The misconnection-preventing centralized lighting interface circuit further comprises a zener diode 40, wherein the cathode of the zener diode 40 is electrically connected to the anode of the dc end 32 of the rectifier bridge, the anode of the zener diode 40 is electrically connected to the cathode of the dc end 32 of the rectifier bridge, and the zener diode 40 can limit the voltage input from the rectifier bridge to the single-chip microcomputer 800 so as to avoid the overlarge voltage input to the single-chip microcomputer 800.
Specifically, the regulated voltage of the zener diode 40 is 43V, and the zener diode 40 maintains the voltage input to the single-chip microcomputer 800 at 43V, so as to ensure that the single-chip microcomputer 800 works normally, and avoid the excessive voltage input to the single-chip microcomputer 800.
The misconnection-preventing centralized lighting interface circuit further comprises a down-flow resistor 50, the down-flow resistor 50 is electrically connected to the negative electrode of the zener diode 40 and the positive electrode of the dc end 32 of the rectifier bridge, the down-flow resistor 50 can reduce the current flowing into the zener diode 40, and can avoid the breakdown of excessive current into the zener diode 40, so as to ensure that the zener diode 40 plays a stable role in the circuit.
Specifically, the resistance of the down-flow resistor 50 is 10Ω, so that the current flowing into the zener diode 40 can be reduced without affecting the normal operation of the circuit, so as to avoid the breakdown of the zener diode 40 by excessive current.
The misconnection-preventing centralized lighting interface circuit further comprises a shunt resistor 60, wherein two ends of the shunt resistor 60 are correspondingly and electrically connected to the two direct current ends 32 of the rectifier bridge, the resistance value of the shunt resistor 60 is larger, and the shunt resistor 60 is suitable for increasing the current flowing into the singlechip 800.
The utility model also discloses an emergency lamp, which comprises a singlechip 800, an LED lamp and the misconnection-preventing concentrated illumination interface circuit, wherein the singlechip 800 is electrically connected with the LED lamp, the misconnection-preventing concentrated illumination interface circuit is arranged on the singlechip 800, and the singlechip 800 is electrically connected with an external power supply circuit through the misconnection-preventing concentrated illumination interface circuit. Under the protection of the misconnection-preventing centralized illumination interface circuit, the emergency lamp can avoid the condition that the singlechip 800 and the LED lamp are damaged due to overlarge external voltage, and plays a role in protecting the emergency lamp.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.
Claims (10)
1. The utility model provides a prevent misconnection and concentrate illumination interface circuit, its characterized in that, prevent misconnection and concentrate illumination interface circuit and be set up the electricity and connect a power supply circuit and a singlechip, power supply circuit has two outputs, prevent misconnection and concentrate illumination interface circuit includes:
a filtering module; and
the protection module comprises a positive thermistor and a transient voltage suppressor, one end of the positive thermistor is electrically connected to an output end of the power supply circuit, the other end of the positive thermistor is simultaneously electrically connected to one end of the transient voltage suppressor and the filtering module, the other end of the transient voltage suppressor is electrically connected to the other output end of the power supply circuit, the transient voltage suppressor is provided with a conducting voltage which is larger than the normal working voltage of the misconnection-preventing concentrated illumination interface circuit, and the filtering module is electrically connected to the singlechip so that when the voltage input to the positive thermistor by the power supply circuit is overlarge, the power supply circuit, the positive thermistor and the transient voltage suppressor form a loop.
2. The misconnection-preventing concentrated illumination interface circuit according to claim 1, wherein the filter module comprises two filter capacitors, the two filter capacitors are connected in series and then connected in parallel to two ends of the transient voltage suppressor, and are electrically connected with the single chip microcomputer at the same time, and one ends of the two filter capacitors are connected with each other electrically and grounded.
3. The misconnection-preventing concentrated illumination interface circuit according to claim 2, further comprising a rectifying module configured to electrically connect the filtering module and the single-chip microcomputer.
4. A misconnection-preventing concentrated lighting interface circuit according to claim 3, wherein the rectifying module is implemented as a rectifying bridge having two ac terminals and two dc terminals, the two ac terminals being electrically connected to the two ends of the filtering module, the two dc terminals being electrically connected to the single-chip microcomputer.
5. The misconnection-preventing concentrated illumination interface circuit according to claim 4, further comprising a zener diode, the negative pole of the zener diode being electrically connected to the positive pole of the dc side of the rectifier bridge, the positive pole of the zener diode being electrically connected to the negative pole of the dc side of the rectifier bridge.
6. The misconnection-preventing concentrated illumination interface circuit according to claim 5, further comprising a down-flow resistor configured to be electrically connected to the negative electrode of the zener diode and the positive electrode of the dc terminal of the rectifier bridge.
7. The misconnection-preventing concentrated illumination interface circuit according to claim 6, further comprising a shunt resistor, wherein two ends of the shunt resistor are correspondingly electrically connected to two dc ends of the rectifier bridge.
8. The misconnection proof concentrated lighting interface circuit of claim 1, wherein the transient voltage suppressor is model SMB J40CA.
9. The misconnection proof concentrated illumination interface circuit according to claim 6, wherein the zener diode has a regulated voltage of 43V.
10. Emergent lamps and lanterns, its characterized in that, emergent lamps and lanterns include:
a single chip microcomputer;
an LED lamp; and
the misconnection-preventing concentrated illumination interface circuit according to any one of claims 1 to 9, wherein the single-chip microcomputer is electrically connected with the LED lamp, and the single-chip microcomputer is electrically connected with an external power supply circuit through the misconnection-preventing concentrated illumination interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320601568.3U CN219514253U (en) | 2023-03-23 | 2023-03-23 | Misconnection-preventing centralized illumination interface circuit and emergency lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320601568.3U CN219514253U (en) | 2023-03-23 | 2023-03-23 | Misconnection-preventing centralized illumination interface circuit and emergency lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219514253U true CN219514253U (en) | 2023-08-11 |
Family
ID=87548966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320601568.3U Active CN219514253U (en) | 2023-03-23 | 2023-03-23 | Misconnection-preventing centralized illumination interface circuit and emergency lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219514253U (en) |
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2023
- 2023-03-23 CN CN202320601568.3U patent/CN219514253U/en active Active
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