Frequency-adjustable broadcast double-flash warning lamp

Abstract

The utility model discloses a broadcast double-flash warning lamp with adjustable frequency. The broadcast double-flash warning lamp comprises an oscillating circuit and a lamp group circuit, wherein the lamp group circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first triode, a second triode, a third triode, a fourth triode, a first lamp and a second lamp; the first triode, the third triode and the fourth triode are PNP type diodes, and the second triode is an NPN type diode; the input end of the oscillating circuit is used for being connected with a first power supply, and the output end of the oscillating circuit is connected with the second end of the fourth resistor. According to the invention, the double-flash warning lamp with adjustable frequency can be realized at relatively low hardware cost, and the practicability is better. The warning lamp can be widely applied to the technical field of warning lamps.

Description

Technical Field

[0001] The utility model relates to the technical field of warning lights, in particular to a frequency-adjustable broadcast double-flash warning light. Background Art

[0002] With the development of electronic technology, related applications have gradually been popularized. In the broadcasting system, a receiver and amplifier are generally used in combination with a warning light to realize the broadcast alarm application. The receiver and amplifier is an audio device that can be used to receive and amplify sound signals, and the warning light is mainly used to flash the light to play the role of alarm.

[0003] In the related technology, 555 chip is generally used as a multivibrator to drive related lamps to realize light flashing alarm. However, this circuit cannot adjust the light frequency and can only flash at a fixed frequency, which may not meet the actual needs of various users. If a single-chip microcomputer is used to write a program to achieve the control of light frequency, the implementation cost will increase.

[0004] In summary, the problems existing in the relevant technologies need to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to solve one of the technical problems existing in the related art to at least a certain extent.

[0006] Therefore, an object of the present invention is to provide a frequency-adjustable broadcast double-flash warning light.

[0007] In order to achieve the above technical objectives, the technical solutions adopted by the utility model include:

[0008] On the one hand, the embodiment of the utility model provides a frequency-adjustable broadcast double flash warning light, comprising:

[0009] Oscillator circuit and lamp group circuit;

[0010] Wherein, the lamp group circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a first lamp and a second lamp; a first end of the fourth resistor is connected to a second power supply, a second end of the fourth resistor is connected to a base of the first transistor and a base of the second transistor, a second end of the fourth resistor is also connected to a first end of the ninth resistor, and a second end of the ninth resistor is grounded; a first end of the fifth resistor is connected to the second power supply, a second end of the fifth resistor is connected to an emitter of the first transistor, a first end of the sixth resistor is connected to the second power supply, and a second end of the sixth resistor is connected to the first transistor the collector of the third triode and the emitter of the third triode; the first end of the seventh resistor is grounded, the second end of the seventh resistor is connected to the base of the third triode, and the collector of the third triode is grounded through the first lamp; the first end of the eighth resistor is connected to the second power supply, the second end of the eighth resistor is connected to the collector of the second triode and the emitter of the fourth triode, the emitter of the second triode is grounded, the first end of the tenth resistor is connected to the base of the fourth triode, the second end of the tenth resistor is grounded, and the collector of the fourth triode is grounded through the second lamp; the first triode, the third triode and the fourth triode are PNP type diodes, and the second triode is an NPN type diode;

[0011] The input end of the oscillation circuit is used to access the first power supply, and the output end of the oscillation circuit is connected to the second end of the fourth resistor.

[0012] In addition, the frequency-adjustable broadcast double flash warning light according to the above embodiment of the utility model may also have the following additional technical features:

[0013] Furthermore, in an embodiment of the present invention, the voltage value range of the first power supply is 0-5V.

[0014] Furthermore, in an embodiment of the present invention, the voltage of the second power supply is 12V.

[0015] Furthermore, in an embodiment of the present invention, the first lamp and the second lamp are LED lamps.

[0016] Furthermore, in an embodiment of the present invention, the light color of any one of the first lamp and the second lamp is red.

[0017] Furthermore, in an embodiment of the present invention, the light color of any one of the first lamp and the second lamp is yellow.

[0018] Furthermore, in one embodiment of the present invention, the oscillation circuit comprises:

[0019] A zero resistor, a first resistor, a second resistor, a third resistor, an operational amplifier, a varactor diode, a first voltage regulator tube and a second voltage regulator tube, and a capacitor;

[0020] The first end of the capacitor is used to connect to the first power supply, the second end of the capacitor is connected to the inverting input of the operational amplifier, the first end of the zeroth resistor is connected to the inverting input of the operational amplifier, the second end of the zeroth resistor is connected to the second end of the fourth resistor, the first end of the first resistor is connected to the non-inverting input of the operational amplifier, the second end of the first resistor is connected to the positive electrode of the first voltage regulator tube, the negative electrode of the first voltage regulator tube is connected to the negative electrode of the second voltage regulator tube, and the positive electrode of the second voltage regulator tube is grounded; the first end of the second resistor is connected to the non-inverting input of the operational amplifier, the second end of the second resistor is grounded, the positive electrode of the varactor is grounded, and the negative electrode of the varactor is used to connect to the first power supply, the first end of the third resistor is connected to the output of the operational amplifier, and the second end of the third resistor is connected to the second end of the fourth resistor.

[0021] Furthermore, in an embodiment of the present invention, the operational amplifier is of model HT741.

[0022] The advantages and beneficial effects of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention:

[0023] The present application discloses a frequency-adjustable broadcast double-flash warning light, comprising an oscillating circuit and a light group circuit; wherein the light group circuit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a first lamp and a second lamp; a first end of the fourth resistor is connected to a second power supply, a second end of the fourth resistor is connected to a base of the first transistor and a base of the second transistor, a second end of the fourth resistor is also connected to a first end of the ninth resistor, and a second end of the ninth resistor is grounded; a first end of the fifth resistor is connected to the second power supply, a second end of the fifth resistor is connected to an emitter of the first transistor, a first end of the sixth resistor is connected to the second power supply, and a second end of the sixth resistor is connected to a collector and a The emitter of the third transistor; the first end of the seventh resistor is grounded, the second end of the seventh resistor is connected to the base of the third transistor, and the collector of the third transistor is grounded through the first lamp; the first end of the eighth resistor is connected to the second power supply, the second end of the eighth resistor is connected to the collector of the second transistor and the emitter of the fourth transistor, the emitter of the second transistor is grounded, the first end of the tenth resistor is connected to the base of the fourth transistor, the second end of the tenth resistor is grounded, and the collector of the fourth transistor is grounded through the second lamp; the first transistor, the third transistor and the fourth transistor are PNP diodes, and the second transistor is an NPN diode; the input end of the oscillator circuit is used to connect to the first power supply, and the output end of the oscillator circuit is connected to the second end of the fourth resistor. The present application can realize the flashing frequency control of the two lamps by connecting to the first power supply of different voltage levels, and can realize the frequency-adjustable double flash warning light at a lower hardware cost, which is suitable for different user needs and has better practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A circuit diagram of a frequency-adjustable broadcast double-flash warning light provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present utility model, it is necessary to understand that the terms "length", "upper", "lower", "front", "back", "left", "right", "top", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] With the development of electronic technology, related applications have gradually been popularized. In the broadcasting system, a receiver and amplifier are generally used in combination with a warning light to realize the broadcast alarm application. The receiver and amplifier is an audio device that can be used to receive and amplify sound signals, and the warning light is mainly used to flash the light to play the role of alarm.

[0029] In the related technology, 555 chip is generally used as a multivibrator to drive related lamps to realize light flashing alarm. However, this circuit cannot adjust the light frequency and can only flash at a fixed frequency, which may not meet the actual needs of various users. If a single-chip microcomputer is used to write a program to achieve the control of light frequency, the implementation cost will increase.

[0030] In view of this, refer to Figure 1In an embodiment of the present application, a frequency-adjustable broadcast double flash warning light is provided, comprising an oscillating circuit and a light group circuit; wherein the light group circuit comprises a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a first lamp LED1 and a second lamp LED2; a first end of the fourth resistor R4 is connected to a second power supply, a second end of the fourth resistor R4 is connected to a base of the first transistor Q1 and a base of the second transistor Q2, a second end of the fourth resistor R4 is also connected to a first end of the ninth resistor R9, and a second end of the ninth resistor R9 is grounded; a first end of the fifth resistor R5 is connected to the second power supply, a second end of the fifth resistor R5 is connected to an emitter of the first transistor Q1, a first end of the sixth resistor R6 is connected to the second power supply, and a second end of the sixth resistor R6 is connected to the first transistor The collector of Q1 and the emitter of the third transistor Q3; the first end of the seventh resistor R7 is grounded, the second end of the seventh resistor R7 is connected to the base of the third transistor Q3, and the collector of the third transistor Q3 is grounded through the first lamp LED1; the first end of the eighth resistor R8 is connected to the second power supply, the second end of the eighth resistor R8 is connected to the collector of the second transistor Q2 and the emitter of the fourth transistor Q4, the emitter of the second transistor Q2 is grounded, the first end of the tenth resistor R10 is connected to the base of the fourth transistor Q4, the second end of the tenth resistor R10 is grounded, and the collector of the fourth transistor Q4 is grounded through the second lamp LED2; the first transistor Q1, the third transistor Q3 and the fourth transistor Q4 are PNP diodes, and the second transistor Q2 is an NPN diode; the input end of the oscillation circuit is used to access the first power supply, and the output end of the oscillation circuit is connected to the second end of the fourth resistor R4. The present application can realize flashing frequency regulation of the two lamps by connecting to a first power supply with different voltage levels, and can realize frequency-adjustable double flash warning lights at a lower hardware cost, which is suitable for different user needs and has better practicality.

[0031] Below, in conjunction with specific drawings, a frequency-adjustable broadcast double-flash warning light provided in an embodiment of the present application is described in detail.

[0032] The present application provides a frequency-adjustable broadcast double flash warning light, which can be applied to the technical field of warning lights. Figure 1 , Figure 1 FIG. 1 shows a schematic diagram of a frequency-adjustable broadcast double flash warning light provided in an embodiment of the present application. Figure 1As shown, the frequency-adjustable broadcast double flash warning light in the embodiment of the present application includes:

[0033] Oscillator circuit and lamp group circuit;

[0034] Wherein, the lamp group circuit includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a first lamp LED1 and a second lamp LED2; a first end of the fourth resistor R4 is connected to a second power supply, a second end of the fourth resistor R4 is connected to a base of the first transistor Q1 and a base of the second transistor Q2, a second end of the fourth resistor R4 is also connected to a first end of the ninth resistor R9, and a second end of the ninth resistor R9 is grounded; a first end of the fifth resistor R5 is connected to the second power supply, a second end of the fifth resistor R5 is connected to an emitter of the first transistor Q1, a first end of the sixth resistor R6 is connected to the second power supply, and a second end of the sixth resistor R6 is connected to the first The collector of the transistor Q1 and the emitter of the third transistor Q3; the first end of the seventh resistor R7 is grounded, the second end of the seventh resistor R7 is connected to the base of the third transistor Q3, and the collector of the third transistor Q3 is grounded through the first lamp LED1; the first end of the eighth resistor R8 is connected to the second power supply, the second end of the eighth resistor R8 is connected to the collector of the second transistor Q2 and the emitter of the fourth transistor Q4, the emitter of the second transistor Q2 is grounded, the first end of the tenth resistor R10 is connected to the base of the fourth transistor Q4, the second end of the tenth resistor R10 is grounded, and the collector of the fourth transistor Q4 is grounded through the second lamp LED2; the first transistor Q1, the third transistor Q3 and the fourth transistor Q4 are PNP diodes, and the second transistor Q2 is an NPN diode;

[0035] The input end of the oscillation circuit is used to access the first power supply, and the output end of the oscillation circuit is connected to the second end of the fourth resistor R4.

[0036] In an embodiment of the present application, the frequency-adjustable broadcast double-flash warning light includes two parts, namely an oscillator circuit and a light group circuit, wherein the input end of the oscillator circuit is used to connect to the first power supply, and the output end is connected to the light group circuit, and the oscillator circuit is used to output high and low levels of a certain frequency, and the frequency can be changed according to the voltage of the first power supply, and the voltage value range of the first power supply can be 0-5V.

[0037] For example, please refer to Figure 1 In the embodiment of the present application, the oscillation circuit may include:

[0038] A zero resistor R0, a first resistor R1, a second resistor R2, a third resistor R3, an operational amplifier U1, a varactor diode D1, a first voltage regulator tube DW1, a second voltage regulator tube DW2 and a capacitor C;

[0039] The first end of the capacitor C is used to connect to the first power supply, the second end of the capacitor C is connected to the inverting input end of the operational amplifier U1, the first end of the zeroth resistor R0 is connected to the inverting input end of the operational amplifier U1, the second end of the zeroth resistor R0 is connected to the second end of the fourth resistor R4, the first end of the first resistor R1 is connected to the non-inverting input end of the operational amplifier U1, the second end of the first resistor R1 is connected to the positive electrode of the first voltage regulator DW1, the negative electrode of the first voltage regulator DW1 is connected to the negative electrode of the second voltage regulator DW2, and the positive electrode of the second voltage regulator DW2 is grounded; the first end of the second resistor R2 is connected to the non-inverting input end of the operational amplifier U1, the second end of the second resistor R2 is grounded, the positive electrode of the varactor D1 is grounded, and the negative electrode of the varactor D1 is used to connect to the first power supply, the first end of the third resistor R3 is connected to the output end of the operational amplifier U1, and the second end of the third resistor R3 is connected to the second end of the fourth resistor R4.

[0040] In the embodiment of the present application, the oscillation circuit includes a zero resistor R0, a first resistor R1, a second resistor R2, a third resistor R3, an operational amplifier U1, a varactor diode D1, a first voltage regulator DW1, a second voltage regulator DW2 and a capacitor C. The working principle thereof is described below. Assume that at the beginning, the output voltage u of the oscillation circuit is 0 (right side of the third resistor R3) is high level. On the one hand, through the positive feedback circuit formed by the first resistor R1 and the second resistor R2, the potential of the non-inverting input terminal of the operational amplifier U1 is On the other hand, the output voltage u 0 The capacitor C is charged through the zeroth resistor R0, so that the voltage u across the capacitor C c When the voltage u across the capacitor C rises c When the potential rises to the same level as the non-inverting input terminal, the output voltage u 0 Specifically, in some embodiments, the operational amplifier U1 may be a model of HT741, which is not limited in the present application.

[0041] Similarly, assuming that at the beginning, the output voltage u of the oscillator circuit is 0 (right side of the third resistor R3) is low level. On the one hand, through the positive feedback circuit formed by the first resistor R1 and the second resistor R2, the potential of the non-inverting input terminal of the operational amplifier U1 is On the other hand, the output voltage u0 The capacitor C is reversely charged through the zeroth resistor R0, so that the voltage u across the capacitor C c When the voltage u across the capacitor C decreases c When the potential drops to the same level as the non-inverting input terminal, the output voltage u 0 Sudden change to high level. In this way, the output voltage u 0 In the embodiment of the present application, the varactor diode D1 is connected in series with the capacitor C. According to the capacitance of the two, the capacitance after the two are connected in series can be calculated, which is recorded as the corrected capacitance C'. Combined with the value of the capacitance after the series connection, the oscillation period can be calculated as:

[0042] In the embodiment of the present application, when the voltage of the first power supply connected increases, the capacitance of the varactor diode D1 decreases, and the correction capacitor C' also decreases. Therefore, the oscillation period T will also change relatively, T=1 / f (f is the frequency), resulting in a change in the frequency of the high and low levels of the output, thereby achieving adjustable flashing frequency of the lamp. Figure 1 In the embodiment, pins 2 and 4 of the interface XS1 of the oscillation circuit are grounded, pin 5 is a +12V power supply pin, pin 3 is a -12V power supply pin, and pin 1 is used to connect to the first power supply. The second power supply can use a 12V voltage.

[0043] In the embodiment of the present application, the first lamp LED1 and the second lamp LED2 in the lamp group circuit can be LED lamps, and their colors are different. For example, one can be red and the other can be yellow. In the embodiment of the present application, there is no restriction on which lamp is selected to be red and which lamp is selected to be yellow. They can also be changed to other colors according to specific needs.

[0044] Combine the following Figure 1 The working principle of the lamp group circuit in the embodiment of the present application is described.

[0045] In the embodiment of the present application, the output voltage u output by the oscillation circuit is 0, through the fourth resistor R4 pulling up, and the ninth resistor R9 pulling down, a relatively stable high and low level signal is obtained. The signal frequency of the high and low levels depends on the oscillation circuit and can be adjusted according to the first power supply. When it is in a high level state, the second transistor Q2 is turned on, so the eighth resistor R8 pulls up at a low level, then the second lamp LED2 is off, the first transistor Q1 is not turned on, and the first lamp LED1 is driven by the third transistor Q3 after being pulled up by the sixth resistor R6 to light up the first lamp LED1; on the contrary, when it is in a low level state, the second transistor Q2 is turned off, the second lamp LED2 is driven by the fourth transistor Q4 after being pulled up by the eighth resistor R8, and the second lamp LED2 is on. At this time, the first transistor Q1 is turned on, and the emitter of the third transistor Q3 becomes low level and is not turned on, so the first lamp LED1 is off. Repeating this cycle, a certain frequency of double flash warning light flashing will be obtained. When the voltage of the first power supply changes, the frequency of the high and low levels output by the oscillation circuit will also change, and the flashing frequency of the double flash warning light can be adjusted. For example, in some embodiments, an adjustable level of 0-5V output can be added at the interface XS1 to adjust the flashing speed of the double flash warning light, which is simple, convenient and low-cost.

[0046] exist Figure 1 In the oscillator circuit shown in the figure, the first voltage regulator tube DW1 and the second voltage regulator tube DW2 are connected in reverse series, and the output voltage u 0 The clamping Zener diode can improve the operating stability of the circuit.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "another embodiment" or "certain embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A frequency-adjustable broadcast double flash warning light, characterized in that: include: Oscillator circuit and lamp group circuit; Wherein, the lamp group circuit includes a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a first transistor, a second transistor, a third transistor, a fourth transistor, a first lamp and a second lamp; a first end of the fourth resistor is connected to a second power supply, a second end of the fourth resistor is connected to a base of the first transistor and a base of the second transistor, a second end of the fourth resistor is also connected to a first end of the ninth resistor, and a second end of the ninth resistor is grounded; a first end of the fifth resistor is connected to the second power supply, a second end of the fifth resistor is connected to an emitter of the first transistor, a first end of the sixth resistor is connected to the second power supply, and a second end of the sixth resistor is connected to the first transistor the collector of the third triode and the emitter of the third triode; the first end of the seventh resistor is grounded, the second end of the seventh resistor is connected to the base of the third triode, and the collector of the third triode is grounded through the first lamp; the first end of the eighth resistor is connected to the second power supply, the second end of the eighth resistor is connected to the collector of the second triode and the emitter of the fourth triode, the emitter of the second triode is grounded, the first end of the tenth resistor is connected to the base of the fourth triode, the second end of the tenth resistor is grounded, and the collector of the fourth triode is grounded through the second lamp; the first triode, the third triode and the fourth triode are PNP type diodes, and the second triode is an NPN type diode; The input end of the oscillation circuit is used to access the first power supply, and the output end of the oscillation circuit is connected to the second end of the fourth resistor.

2. The frequency-adjustable broadcast double flash warning light according to claim 1, characterized in that: The voltage value range of the first power supply is 0-5V.

3. The frequency-adjustable broadcast double flash warning light according to claim 1, characterized in that: The voltage of the second power supply is 12V.

4. The frequency-adjustable broadcast double flash warning light according to claim 1, characterized in that: The first lamp and the second lamp are LED lamps.

5. The frequency-adjustable broadcast double flash warning light according to claim 4, characterized in that: The light color of any one of the first lamp and the second lamp is red.

6. The frequency-adjustable broadcast double flash warning light according to claim 4, characterized in that: The light color of any one of the first lamp and the second lamp is yellow.

7. The frequency-adjustable broadcast double flash warning light according to claim 1, characterized in that: The oscillator circuit comprises: A zero resistor, a first resistor, a second resistor, a third resistor, an operational amplifier, a varactor diode, a first voltage regulator tube and a second voltage regulator tube, and a capacitor; The first end of the capacitor is used to connect to the first power supply, the second end of the capacitor is connected to the inverting input of the operational amplifier, the first end of the zeroth resistor is connected to the inverting input of the operational amplifier, the second end of the zeroth resistor is connected to the second end of the fourth resistor, the first end of the first resistor is connected to the non-inverting input of the operational amplifier, the second end of the first resistor is connected to the positive electrode of the first voltage regulator tube, the negative electrode of the first voltage regulator tube is connected to the negative electrode of the second voltage regulator tube, and the positive electrode of the second voltage regulator tube is grounded; the first end of the second resistor is connected to the non-inverting input of the operational amplifier, the second end of the second resistor is grounded, the positive electrode of the varactor is grounded, and the negative electrode of the varactor is used to connect to the first power supply, the first end of the third resistor is connected to the output of the operational amplifier, and the second end of the third resistor is connected to the second end of the fourth resistor.

8. The frequency-adjustable broadcast double flash warning light according to claim 7, characterized in that: The model of the operational amplifier is HT741.

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