Low-light-intensity aviation obstruction beacon driving circuit

Abstract

The utility model provides a low-light-intensity aviation obstruction beacon driving circuit, comprising a triode, the base electrode of which is connected with the first end of a seventh resistor, the emitter electrode of which is grounded, and the collector electrode of which is connected with a first node; one end of the third resistor is connected with the first power supply voltage and the other end is connected with the first node; the grid electrode of the field-effect tube is sequentially connected with a fifth resistor and the first node in series, and the source electrode of the field-effect tube is grounded; a to-be-tested power supply outflow pin is connected with the drain electrode of the field effect transistor, a power supply voltage pin is connected with first power supply voltage, an output power supply voltage pin is connected with a voltage division circuit, a filtering pin is connected with a second capacitor and then is grounded, and a grounding pin is grounded; and the second power supply voltage is sequentially connected in series with a lighting load, a current fuse for providing overcurrent protection and a to-be-tested power supply outflow pin. The circuit structure can be simplified, the cost is reduced, the stability is improved, and the service life of a photo device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lighting drive circuit, specifically, relate to a low light intensity aviation obstruction lamp drive circuit. BACKGROUND

[0002] At present, the LED lighting lamps and lanterns for AC power supply network mostly adopt low-voltage direct-current drive mode: AC 220V, AC 230V or AC 110V, AC 120V, etc. of power grid is converted into relatively low direct-current voltage, for example, DC 12V, DC 24V, DC 36V, also DC 80V or even higher direct-current low voltage, to provide the required power for the corresponding LED lighting circuit, to ensure the normal work of LED light source, that is, to provide the so-called 'low-voltage direct-current power supply' environment for LED light source components.

[0003] For example: the existing low light intensity aviation obstruction lamp drive circuit mostly has complex circuit, high cost, poor stability, and cannot provide convenience for maintenance.

[0004] Therefore, the utility model provides a low light intensity aviation obstruction lamp drive circuit. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model aims at providing a low light intensity aviation obstruction lamp drive circuit, which overcomes the difficulties of the prior art, can simplify the circuit structure, reduce the cost, improve the stability and prolong the service life of the optical device.

[0006] The embodiment of the utility model provides a low light intensity aviation obstruction lamp drive circuit, which comprises:

[0007] A triode, the base of the triode is connected with the first end of a seventh resistor, the emitter is grounded, and the collector is connected with a first node;

[0008] A third resistor, one end of which is connected with a first power supply voltage, and the other end is connected with the first node;

[0009] A field effect tube, the gate of the field effect tube is connected with a fifth resistor and the first node in sequence, and the source is grounded;

[0010] A power supply voltage conversion module, the power supply voltage conversion module comprises a pair of measured power supply outflow pins, a pair of measured power supply inflow pins, a power supply voltage pin, an output power supply voltage pin, a filtering pin and a ground pin, the measured power supply outflow pin is connected with the drain of the field effect tube, the power supply voltage pin is connected with the first power supply voltage, the output power supply voltage pin is connected with a voltage dividing circuit, the filtering pin is connected with a second capacitor and then grounded, and the ground pin is grounded;

[0011] a second power supply voltage, in series with a lighting load, a current fuse providing overcurrent protection and the to-be-tested power supply outgoing pin in turn.

[0012] Preferably, it further comprises a bidirectional clamping diode providing overvoltage protection, one end of which is grounded and the other end of which is connected to the to-be-tested power supply outgoing pin.

[0013] Preferably, the emitter of the triode is connected to the base through an eighth resistor, the resistance of which is 10000 ohms.

[0014] Preferably, the source of the field effect transistor is connected to the gate through a sixth resistor, the resistance of which is 100000 ohms.

[0015] Preferably, the voltage dividing circuit comprises:

[0016] a first resistor, a first end of which is connected to the output power supply voltage pin;

[0017] a second resistor and a third capacitor are connected in series, and then connected in parallel with a fourth resistor, and the second end of the first resistor is connected to the fourth resistor, and the fourth resistor is grounded.

[0018] Preferably, a second node between the second resistor and the third capacitor is connected to a current pin of a controller, and the second node provides a current analog signal to the controller.

[0019] Preferably, a first end of a seventh resistor is connected to a control pin of the controller.

[0020] Preferably, the resistance of the first resistor is 10000 ohms;

[0021] the resistance of the second resistor is 100000 ohms;

[0022] the resistance of the third resistor is 10000 ohms;

[0023] the resistance of the fourth resistor is 10000 ohms;

[0024] the resistance of the fifth resistor is 1000 ohms;

[0025] the resistance of the seventh resistor is 1000 ohms;

[0026] the second capacitor is 1 nanofarad;

[0027] the third capacitor is 1 nanofarad.

[0028] Preferably, it further comprises a first capacitor, one end of which is connected to the power supply voltage pin and the other end of which is grounded, and the first capacitor is 100 nanofarad.

[0029] Preferably, the model of the power voltage conversion module is MT9221 current measurement chip, the triode is NPN triode, and the field effect tube is NMOS field effect tube.

[0030] The low-light-intensity aviation obstruction light driving circuit can simplify circuit structure, reduce cost, improve stability, and prolong service life of photoelectric devices. BRIEF DESCRIPTION OF DRAWINGS

[0031] Other features, objects, and advantages of the utility model will become more apparent from the following detailed description of non-limiting embodiments with reference to the drawings.

[0032] Figure 1 The utility model discloses a low-light-intensity aviation obstruction light driving circuit's circuit diagram. DETAILED DESCRIPTION

[0033] The following detailed description of the application is made with reference to the accompanying drawings. The other advantages and effects of the application can be easily understood by those skilled in the art from the disclosure of the application. The application can also be implemented or applied in different specific embodiments. The details in the application can be modified or changed according to different views and application systems without departing from the spirit of the application. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0034] The embodiments of the application will be described in detail below with reference to the accompanying drawings. The application can be embodied in various forms and is not limited to the embodiments described herein.

[0035] In the description of the application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the application. Moreover, the specific features, structures, materials or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples represented in the application and the features of the different embodiments or examples without conflict.

[0036] In addition, the terms "first", "second" are used only for the purpose of representation, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] For the purpose of clearness of the present application, devices irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar constituent elements throughout the description.

[0038] Throughout the description, when it is said that a certain device is "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" in which other elements are interposed therebetween. In addition, when it is said that a certain device "includes" a certain constituent element, other constituent elements are not excluded unless specifically stated to the contrary, but it means that other constituent elements can be further included.

[0039] When it is said that a certain device is "on" another device, this can be directly on the other device, but can also be accompanied by other devices therebetween. When it is said in contrast that a certain device is "directly" on another device, there are no other devices therebetween.

[0040] Although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first interface and a second interface, etc. are denoted. Also, as used herein, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and / or "including," when used herein, specify the presence of stated features, steps, operations, elements, components, items, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, items, and / or groups thereof. As used herein, the terms "or" and "and / or" are to be interpreted as inclusive, i.e., as meaning one or any combination of items. Thus, "A, B or C" or "A, B and / or C" means any of the following: A; B; C; A and B; A and C; B and C; A, B and C. An exception to this definition will occur only when a combination of elements, functions, steps or acts are in some way inherently mutually exclusive.

[0041] The professional terms used herein are used only to refer to specific embodiments, and are not intended to limit the present application. The singular form used herein, unless the context clearly indicates otherwise, also includes the plural form. The meaning of "include" used in the specification is to specify a certain feature, region, integer, step, operation, element and / or component, and is not to exclude the presence or addition of other features, regions, integers, steps, operations, elements and / or components.

[0042] Although not defined differently, the technical terms and scientific terms used herein include the technical terms and scientific terms commonly used in the art, and all the terms have the same meaning as generally understood by the person skilled in the art to which the present application belongs. The terms defined in the commonly used dictionary are additionally explained to have a meaning consistent with the relevant technical documents and the content currently prompted, and if not defined, should not be interpreted as an ideal or very formal meaning.

[0043] Figure 1 The utility model discloses a low light intensity aviation obstruction lamp drive circuit's circuit diagram. As shown in the utility model discloses a low light intensity aviation obstruction lamp drive circuit, comprising: Figure 1

[0044] A triode Q2, the base of triode Q2 is connected with the first end of a seventh resistance R7, the emitter is grounded, and the collector is connected with the first node N1.

[0045] A third resistance R3, one end is connected with the first power supply voltage, and the other end is connected with the first node N1.

[0046] A field effect tube Q1, the gate of field effect tube Q1 is connected with a fifth resistance R5 and the first node N1 in turn, and the source is grounded.

[0047] A power supply voltage conversion module, the power supply voltage conversion module includes a pair of measured power supply outflow pin IP+, a pair of measured power supply inflow pin IP-, power supply voltage pin VCC, output power supply voltage pin VIOUT, filter pin FILTER and ground pin GND, the measured power supply outflow pin is connected with the drain of field effect tube Q1, the power supply voltage pin VCC is connected with the first power supply voltage, the output power supply voltage pin VIOUT is connected with a voltage dividing circuit, the filter pin FILTER is connected with a second capacitor C2 and grounded, and the ground pin GND is grounded.

[0048] A second power supply voltage, a lighting load LED, a current fuse F1 providing overcurrent protection and a measured power supply outflow pin IP+ are connected in turn.

[0049] In a preferred embodiment, a bidirectional clamping diode providing overvoltage protection is further included, one end of the bidirectional clamping diode is grounded, and the other end is connected with the measured power supply outflow pin IP+, but it is not limited thereto.

[0050] In a preferred embodiment, the emitter of triode Q2 is connected with the base through an eighth resistance R8, and the resistance value of the eighth resistance is 10000 ohms, but it is not limited thereto.

[0051] In a preferred embodiment, the source of field effect tube Q1 is connected with the gate through a sixth resistance R6, and the resistance value of the sixth resistance is 100000 ohms, but it is not limited thereto.

[0052] ​In a preferred embodiment, the voltage dividing circuit comprises:

[0053] A first resistor R1, a first end of the first resistor R1 is connected to the output voltage pin VIOUT.

[0054] A second resistor R2 and a third capacitor C3 are connected in series, and then connected in parallel with a fourth resistor R4, the second end of the first resistor R1 is connected to the second resistor R2 and the third capacitor C3, and the fourth resistor R4 is grounded, but not limited thereto.

[0055] In a preferred embodiment, a second node N2 between the second resistor R2 and the third capacitor C3 is connected to the current pin LAMP2 of the controller, and the second node N2 provides a current analog signal to the controller, but not limited thereto.

[0056] In a preferred embodiment, a first end of the seventh resistor R7 is connected to the control pin LAMP1 of the controller, but not limited thereto.

[0057] In a preferred embodiment, the resistance value of the first resistor is 10000 ohms.

[0058] The resistance value of the second resistor is 100000 ohms.

[0059] The resistance value of the third resistor is 10000 ohms.

[0060] The resistance value of the fourth resistor is 10000 ohms.

[0061] The resistance value of the fifth resistor is 1000 ohms.

[0062] The resistance value of the seventh resistor is 1000 ohms.

[0063] The second capacitor C2 is 1 nanofarad.

[0064] The third capacitor C3 is 1 nanofarad, but not limited thereto.

[0065] In a preferred embodiment, it further comprises a first capacitor C1, one end of which is connected to the power supply voltage pin VCC and the other end is grounded, and the first capacitor C1 is 100 nanofarad, but not limited thereto.

[0066] In a preferred embodiment, the model of the power voltage conversion module is MT9221 current measurement chip, which can provide linear voltage current conversion, but not limited thereto.

[0067] In a preferred embodiment, the transistor Q2 is an NPN type transistor, and the field effect transistor Q1 is an NMOS field effect transistor, but not limited thereto.

[0068] Reference Figure 1As shown, the low light intensity aviation obstruction light driving circuit of the utility model, including a triode Q2, a third resistance R3, a field effect tube Q1, a power voltage conversion module, a second power supply voltage, a bidirectional clamping diode that provides overvoltage protection and a first capacitor C1. Among them, the base of triode Q2 is connected with the first end of a seventh resistance R7, the emitter is grounded, and the collector is connected with the first node N1. One end of third resistance R3 is connected with the first power supply voltage, and the other end is connected with the first node N1. The gate of field effect tube Q1 is connected with a fifth resistance R5 and the first node N1 in turn, and the source is grounded. The power voltage conversion module includes a pair of measured power outflow pins IP+, a pair of measured power inflow pins IP-, a power supply voltage pin VCC, an output power voltage pin VIOUT, a filtering pin FILTER and a ground pin GND, the measured power outflow pin is connected with the drain of field effect tube Q1, the power supply voltage pin VCC is connected with the first power supply voltage, the output power voltage pin VIOUT is connected with a voltage dividing circuit, the filtering pin FILTER is connected with a second capacitor C2 and then grounded, and the ground pin GND is grounded. The second power supply voltage is connected with a lighting load LED (the light emitting part of LED lamp), a current fuse F1 that provides overcurrent protection and the measured power outflow pin IP+ in turn. One end of the bidirectional clamping diode is grounded, and the other end is connected with the measured power outflow pin IP+. One end of the first capacitor C1 is connected with the power supply voltage pin VCC, and the other end is grounded, and the first capacitor C1 is 100 nanofarad. The emitter of triode Q2 is connected with the base through a eighth resistance R8, and the resistance value of the eighth resistance is 10000 ohm. The source of field effect tube Q1 is connected with the gate through a sixth resistance R6, and the resistance value of the sixth resistance is 100000 ohm. Among them, the first end of the first resistance R1 in the voltage dividing circuit is connected with the output power voltage pin VIOUT. The second resistance R2 is connected with a third capacitor C3 in series, and then is connected with a fourth resistance R4 in parallel, and then is connected with the second end of the first resistance R1, and the fourth resistance R4 is grounded. The second node N2 between the second resistance R2 and the third capacitor C3 is connected with the current pin LAMP2 of a controller, and the second node N2 provides current analog signals to the controller. The first end of the seventh resistance R7 is connected with the control pin LAMP1 of the controller. The resistance value of the first resistance is 10000 ohm. The resistance value of the second resistance is 100000 ohm. The resistance value of the third resistance is 10000 ohm. The resistance value of the fourth resistance is 10000 ohm. The resistance value of the fifth resistance is 1000 ohm. The resistance value of the seventh resistance is 1000 ohm. The second capacitor C2 is 1 nanofarad. The third capacitor C3 is 1 nanofarad. The model of the power voltage conversion module is MT9221 current measurement chip, the triode Q2 is NPN type triode, and the field effect tube Q1 is NMOS field effect tube.

[0069] The working state of the low light intensity aviation obstruction light driving circuit of the utility model can be the following three kinds:

[0070] (1) LAMP1 port accepts digital control signal (for example square wave signal) from control pin of controller, and drives LED light to flash.

[0071] (2) When LAMP1 is low, Q2 is in cut-off state, and VGS voltage of Nmos tube Q1 is VDD 5.0, at this time, Q1 is in conduction state, and drives LED light to light up.

[0072] (3) When LAMP1 is high, Q2 is in conduction state, VGS voltage of Nmos tube Q1 is Vce of Q2, and is less than 0.6V, at this time, Q1 is in cut-off state, and makes LED light to be off.

[0073] Current on LED light is converted into voltage in equal proportion, then is divided into half through R1 and R2, and is filtered through R2 and C3 to control end sampling, so that current value information of LED light can be provided for subsequent maintenance work, and it is beneficial to fault detection and elimination.

[0074] In conclusion, the utility model provides a low light intensity aviation obstruction lamp drive circuit, can simplify circuit structure, reduce the, promote stability, prolong the service life of photoelectric device.

[0075] The above is further detailed description of the utility model in combination with specific preferred embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. For ordinary skilled person in the art to which the utility model belongs, on the premise of not departing from the concept of the utility model, a plurality of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the utility model.

Claims

1. A low-intensity aviation obstruction light driving circuit, characterized in that, include: A transistor (Q2) has its base connected to the first terminal of a seventh resistor (R7), its emitter grounded, and its collector connected to the first node (N1). A third resistor (R3) is connected at one end to the first supply voltage and at the other end to the first node (N1); A field-effect transistor (Q1) is provided, wherein the gate of the field-effect transistor (Q1) is connected in series with a fifth resistor (R5) and the first node (N1), and the source is grounded; A power supply voltage conversion module includes a power supply output pin (IP+), a power supply input pin (IP-), a power supply voltage pin (VCC), an output power supply voltage pin (VIOUT), a filter pin (FILTER), and a ground pin (GND). The power supply output pin is connected to the drain of the field-effect transistor (Q1). The power supply voltage pin (VCC) is connected to the first power supply voltage. The output power supply voltage pin (VIOUT) is connected to a voltage divider circuit. The filter pin (FILTER) is connected to a second capacitor (C2) and then grounded. The ground pin (GND) is grounded. A second supply voltage is connected in series with a lighting load (LED), a current fuse (F1) providing overcurrent protection, and the power supply output pin (IP+) of the power supply under test.

2. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, It also includes a bidirectional clamping diode that provides overvoltage protection, with one end of the bidirectional clamping diode grounded and the other end connected to the power supply output pin (IP+) of the power supply under test.

3. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, The emitter of the transistor (Q2) is connected to the base through an eighth resistor (R8), the resistance of which is 10,000 ohms.

4. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, The source of the field-effect transistor (Q1) is connected to the gate through a sixth resistor (R6), the resistance of which is 100,000 ohms.

5. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, The voltage divider circuit includes: A first resistor (R1) is provided, and the first end of the first resistor (R1) is connected to the output power supply voltage pin (VIOUT). A second resistor (R2) and a third capacitor (C3) are connected in series, then connected in parallel with a fourth resistor (R4), and then connected to the second terminal of the first resistor (R1). The fourth resistor (R4) is grounded.

6. The low-intensity aviation obstruction light driving circuit as described in claim 5, characterized in that, The second node (N2) between the second resistor (R2) and the third capacitor (C3) is connected to a current pin (LAMP2) of a controller, and the second node (N2) provides a current analog signal to the controller.

7. The low-intensity aviation obstruction light driving circuit as described in claim 6, characterized in that, The first end of the seventh resistor (R7) is connected to the control pin (LAMP1) of the controller.

8. The low-intensity aviation obstruction light driving circuit as described in claim 6, characterized in that, The resistance of the first resistor is 10,000 ohms; The resistance of the second resistor is 100,000 ohms; The resistance of the third resistor is 10,000 ohms; The resistance of the fourth resistor is 10,000 ohms; The resistance of the fifth resistor is 1000 ohms; The resistance of the seventh resistor is 1000 ohms; The second capacitor (C2) is 1 nanofarad; The third capacitor (C3) is 1 nanofarad.

9. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, It also includes a first capacitor (C1), one end of which is connected to the power supply voltage pin (VCC) and the other end is grounded. The first capacitor (C1) is 100 nanofarads.

10. The low-intensity aviation obstruction light driving circuit as described in claim 1, characterized in that, The power supply voltage conversion module is an MT9221 current measurement chip, the transistor (Q2) is an NPN transistor, and the field-effect transistor (Q1) is an NMOS field-effect transistor.

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