acoustic-optic alarm

Abstract

The utility model provides a kind of sound-light alarm, it includes: multichannel inverter logic gate chip, LED drive module, sound alarm drive module, LED module and sound output device;The multichannel inverter logic gate chip has multichannel inverter, each way the inverter has a group of corresponding input and output, the input of multichannel the inverter is respectively connected to corresponding trigger end;The output of multichannel the inverter is respectively connected with the LED drive module and the sound alarm drive module;The LED module is connected with the LED drive module, and the sound output device is connected with the sound alarm drive module;The multichannel inverter logic gate chip is configured, based on the different trigger signal combination of the trigger end, different level signals are output to the LED drive module and the sound alarm drive module by the inverter, to drive the LED module and the sound output device output corresponding alarm signal.

Description

Technical Field

[0001] This utility model relates to the field of safety detection and alarm technology, and in particular to an audible and visual alarm. Background Technology

[0002] Existing alarms are often limited to providing a single sound effect, light color, and light flashing frequency when in operation; or when switching between multiple sound effects, light colors, and light flashing frequencies, they need to be controlled and set to work in a specific mode through hardware DIP switches, hardware jumpers, or MCU software programs. It is difficult to modify the configuration status in real time and simply according to actual needs, special site conditions, or specific requirements of a particular occasion, so that the alarm can present different working states. Utility Model Content

[0003] The purpose of this invention is to provide an audible and visual alarm to solve the problem that existing alarms have a single working mode and are difficult to configure simply.

[0004] To solve the above-mentioned technical problems, this utility model provides an audible and visual alarm, which includes: a multi-channel inverting logic gate chip, an LED driver module, an audible alarm driver module, an LED module, and a sound output device;

[0005] The multi-channel inverting logic gate chip has multiple inverters, each inverter having a set of corresponding input and output terminals. The input terminals of the multiple inverters are respectively connected to corresponding trigger terminals. The output terminals of the multiple inverters are respectively connected to the LED driving module and the sound alarm driving module. The LED module is connected to the LED driving module, and the sound output device is connected to the sound alarm driving module.

[0006] The multi-channel inverting logic gate chip is configured to output different level signals to the LED driving module and the sound alarm driving module through the inverter based on different combinations of trigger signals at the trigger terminal, so as to drive the LED module and the sound output device to output corresponding alarm signals.

[0007] Optionally, the multi-channel inverter logic gate chip includes at least five inverters, namely a first inverter, a second inverter, a third inverter, a fourth inverter, and a fifth inverter;

[0008] The first inverter corresponds to sound signal detection, and its corresponding trigger terminal is a sound external signal detection circuit;

[0009] The second inverter corresponds to the flicker frequency signal detection, and its corresponding trigger terminal is the flicker frequency external signal detection circuit;

[0010] The third inverter, the fourth inverter, and the fifth inverter correspond to the light color signal detection, and their corresponding trigger terminals are three types of external signal detection circuits for light colors.

[0011] Optionally, the sound alarm driving module is connected to the output terminal of the first inverter, and outputs two sound alarm signals to the sound output device based on the two level signals at the output terminal of the first inverter, so that the sound output device emits two alarm sounds.

[0012] Optionally, the sound alarm driving module includes a voice chip or an audio generation circuit; the sound output device includes a buzzer or a speaker.

[0013] Optionally, the LED driving module includes a frequency adjustment unit; the frequency adjustment unit is connected to the output terminal of the second inverter, and outputs two light flashing frequency signals to the LED module based on the two level signals at the output terminal of the second inverter, so that the LED module emits light at the two flashing frequencies.

[0014] Optionally, the frequency adjustment unit includes a 555 timer.

[0015] Optionally, the LED driving module includes a lamp switching unit, which is connected to the output terminals of the third inverter, the fourth inverter, and the fifth inverter; the lamp switching unit includes a three-way LED switching circuit, and the LED module includes three LED groups with different colors, each of which is connected to one of the LED switching circuits.

[0016] The lamp switching unit switches the enable of the three LED switching circuits based on the two level signals at the output terminals of the third, fourth, and fifth inverters, so as to make the corresponding LED lamp group light up.

[0017] Optionally, the LED driving module includes an inter-board pin connection circuit and a frequency adjustment unit; the output terminals of the third inverter, the fourth inverter and the fifth inverter are connected to the lamp switching unit through the inter-board pin connection circuit.

[0018] The output of the frequency adjustment unit is connected to the LED driver circuit through the inter-board pin connection circuit.

[0019] Optionally, the multi-channel inverting logic gate chip is a 74HC04.

[0020] Optionally, the audible and visual alarm is used for industrial gas detection, and the LED module includes at least a red LED group and a blue LED group; when the red LED group is lit, it corresponds to a combustible gas alarm; when the blue LED group is lit, it corresponds to a toxic or harmful gas alarm.

[0021] In summary, the audible and visual alarm provided by this utility model includes: a multi-channel inverting logic gate chip, an LED driver module, an audible alarm driver module, an LED module, and a sound output device. The multi-channel inverting logic gate chip has multiple inverters, each inverter having a corresponding set of input and output terminals. The input terminals of the multiple inverters are respectively connected to corresponding trigger terminals. The output terminals of the multiple inverters are respectively connected to the LED driver module and the audible alarm driver module. The LED module is connected to the LED driver module, and the sound output device is connected to the audible alarm driver module. The multi-channel inverting logic gate chip is configured to output different level signals to the LED driver module and the audible alarm driver module through the inverters based on different combinations of trigger signals from the trigger terminals, thereby driving the LED module and the sound output device to output corresponding alarm signals.

[0022] With this configuration, by inputting different combinations of trigger signals at different trigger terminals, the combination of different audible and visual alarm signals emitted by the entire audible and visual alarm can be adjusted to adapt to different needs and scenarios, especially in the field of industrial gas detection, where different alarm levels of hazardous gases need to be distinguished. Attached Figure Description

[0023] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention.

[0024] Figure 1 This is a schematic diagram of the functional modules of the sound and light alarm device according to an embodiment of this utility model.

[0025] Figure 2 This is a schematic diagram of the LED switching circuit according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of an LED light assembly according to an embodiment of the present invention.

[0027] In the attached diagram: 1-Multi-channel inverting logic gate chip; 11-Inverter; 111-First inverter; 112-Second inverter; 113-Third inverter; 114-Fourth inverter; 115-Fifth inverter; 2-LED driver module; 21-Frequency adjustment unit; 22-Lamp switching unit; 221, 222, 223-LED switching circuit; 3-Audible alarm driver module; 4-LED module; 41, 42, 43-LED lamp group; 5-Sound output device; 61-External sound signal detection circuit; 62-External flashing frequency signal detection circuit; 63, 64, 65-External light color signal detection circuit. Detailed Implementation

[0028] To make the objectives, advantages, and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the objectives of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different drawings may emphasize different aspects and sometimes use different scales.

[0029] As used in this invention, the singular forms “a,” “an,” “one,” and “the” include plural objects; the term “or” is generally used to mean “and / or”; the term “a number” is generally used to mean “at least one”; and the term “at least two” is generally used to mean “two or more”. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature; “one end” and “the other end,” and “proximal end” and “distal end” generally refer to two corresponding parts, which include not only endpoints. Furthermore, the terms "installed," "connected," and "attached," as used in this utility model, and the term "set" on one element from another, should be interpreted broadly. They generally only indicate a connection, coupling, cooperation, or transmission relationship between the two elements, which can be direct or indirect through an intermediate element. They should not be construed as indicating or implying a spatial positional relationship between the two elements, meaning one element can be located inside, outside, above, below, or to one side of the other element, unless otherwise explicitly stated. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances. Additionally, directional terms such as above, below, up, down, upward, downward, left, and right are used relative to exemplary embodiments as shown in the figures, with upward or up direction pointing towards the top of the corresponding figure, and downward or down direction pointing towards the bottom of the corresponding figure.

[0030] The purpose of this invention is to provide an audible and visual alarm to solve the problems of existing alarms having a single working mode and being difficult to configure simply. The following description refers to the accompanying drawings.

[0031] Please refer to Figures 1 to 3This utility model provides an audible and visual alarm, comprising: a multi-channel inverting logic gate chip 1, an LED driver module 2, an audible alarm driver module 3, an LED module 4, and a sound output device 5; the multi-channel inverting logic gate chip 1 has multiple inverters 11, each inverter 11 having a corresponding set of input and output terminals, the input terminals of the multiple inverters 11 being connected to corresponding trigger terminals; the output terminals of the multiple inverters 11 being connected to the LED driver module 2 and the audible alarm driver module 3 respectively; the LED module 4 being connected to the LED driver module 2, and the sound output device 5 being connected to the audible alarm driver module 3; the multi-channel inverting logic gate chip 1 is configured to output different level signals to the LED driver module 2 and the audible alarm driver module 3 through the inverters 11 based on different combinations of trigger signals from the trigger terminals, so as to drive the LED module 4 and the sound output device 5 to output corresponding alarm signals.

[0032] The multi-channel inverter logic gate chip 1 is a logic gate chip, preferably a high-speed silicon-gate CMOS device, mainly used for signal inversion processing in digital circuits. It features low power consumption, wide voltage range, and high noise tolerance. Each inverter 11 can invert the input signal, making it suitable for logic level conversion, signal shaping, and other scenarios.

[0033] Optionally, the multi-channel inverting logic gate chip 1 includes at least five inverters 11, namely a first inverter 111, a second inverter 112, a third inverter 113, a fourth inverter 114, and a fifth inverter 115.

[0034] The first inverter 111 corresponds to sound signal detection, and its corresponding trigger terminal is the sound external signal detection circuit 61;

[0035] The second inverter 112 corresponds to the flicker frequency signal detection, and its corresponding trigger terminal is the flicker frequency external signal detection circuit 62;

[0036] The third inverter 113, the fourth inverter 114 and the fifth inverter 115 correspond to the light color signal detection, and their corresponding trigger terminals are the three light color external signal detection circuits 63, 64 and 65, respectively.

[0037] In one example, the multiplexer logic gate chip 1 is a 74HC04, which contains 6 inverters 11. Five of these inverters 11 can be used, with one left floating. Of course, in other embodiments, the multiplexer logic gate chip 1 is not limited to the 74HC04; for example, a CD4069 could also be used, and this invention is not limited in this regard. The output of each inverter 11 is an inverse of the level signal at its input. For example, taking the first inverter 111 as an example, when a low-level signal is applied to its input, its output is a high-level signal. Conversely, when a high-level signal is applied to its input, its output is a low-level signal.

[0038] Optionally, the external sound signal detection circuit 61 may include common signal processing components in the art, such as anti-jitter capacitors and current-limiting resistors, which are used to detect sound trigger signals. The specific circuit of the external sound signal detection circuit 61 can be found in existing technology and will not be described in detail in this embodiment. When no sound trigger signal is detected, the external sound signal detection circuit 61 outputs a high-level signal; when a sound trigger signal is detected, it outputs a low-level signal.

[0039] Optionally, the sound alarm driving module 3 is connected to the output terminal of the first inverter 111, and outputs two sound alarm signals to the sound output device 5 based on the two level signals at the output terminal of the first inverter 111, so that the sound output device 5 emits two alarm sounds. Preferably, the sound alarm driving module 3 includes a voice chip or an audio generation circuit; the sound output device 5 includes a buzzer or a speaker. In one embodiment, the sound alarm driving module 3 includes a voice chip, such as an AC9561. The AC9561 is a common four-tone alarm voice chip with four built-in alarm sound effects. By applying a low-level signal or a high-level signal to its input pin (F1 pin), different alarm sound effects can be selected as sound alarm signals, which are then output to the sound output device 5 through a driving circuit (such as a transistor amplifier driving circuit). The sound output device 5 can be, for example, a passive buzzer or a speaker, which can output two alarm sounds according to two different sound alarm signals to distinguish the current alarm scenario. In other embodiments, the sound alarm driver module 3 may also include a microcontroller to replace the voice chip. The microcontroller stores several different sound driver programs, and selects to emit different sound alarm signals when a low-level signal or a high-level signal is input to its GPIO terminal. Other circuit connections can be referred to the voice chip AC9561, and will not be described in detail in this embodiment.

[0040] In another embodiment, the sound alarm driving module 3 may not use an integrated voice chip, but instead include an audio generation circuit. For example, the audio generation circuit can be built using logic control components or hardware circuits. It can output sound alarm signals of different frequencies when a low-level or high-level signal is input. Therefore, the sound output device 5 can be an active buzzer, which can emit two different frequency alarm sounds when receiving different frequency sound alarm signals from the sound alarm driving module 3. This also allows for differentiation of the required alarm scenario.

[0041] Optionally, the circuit structures of the flashing frequency external signal detection circuit 62 and the three light color external signal detection circuits 63, 64, and 65 are similar to those of the sound external signal detection circuit 61. They are used to detect the flashing frequency trigger signal and the selection trigger signal for the three different light colors, respectively. When the corresponding trigger signal is detected, the flashing frequency external signal detection circuit 62 and the three light color external signal detection circuits 63, 64, and 65 output a low-level signal; otherwise, if the corresponding trigger signal is not detected, they output a high-level signal.

[0042] Optionally, the LED driving module 2 includes a frequency adjustment unit 21; the frequency adjustment unit 21 is connected to the output terminal of the second inverter 112, and outputs two light flashing frequency signals to the LED module 4 based on the two level signals at the output terminal of the second inverter 111, so that the LED module 4 emits light at the two flashing frequencies.

[0043] In one example, the frequency adjustment unit 21 includes a 555 timer, a commonly used device in the art, which can output two different PWM frequency signals according to two different input level signals. These two different PWM frequency signals are then used as two different light flashing frequency signals to control the LED driving circuit, causing the LED module 4 to emit light at two different flashing frequencies.

[0044] Optionally, the LED driving module 2 includes a lamp switching unit 22, which is connected to the output terminals of the third inverter 113, the fourth inverter 114, and the fifth inverter 115. The lamp switching unit 22 includes three LED switching circuits 221, 222, and 223. The LED module 4 includes three LED groups 41, 42, and 43 with different colors, and each LED group is connected to one of the LED switching circuits. The lamp switching unit 22 switches the enable of the three LED switching circuits 221, 222, and 223 based on two level signals at the output terminals of the third inverter 113, the fourth inverter 114, and the fifth inverter 115, so that the corresponding LED groups 41, 42, and 43 emit light.

[0045] In one embodiment, the three LED switching circuits 221, 222, and 223 are three independent circuits, which may include, for example, transistor switching circuits. Each LED switching circuit is connected to the output of the corresponding inverter 11.

[0046] Please refer to Figure 2 Taking the LED switching circuit 221 as an example, it includes an NPN transistor Q1 and a PMOS transistor Q2. The base (b) of the NPN transistor Q1 is connected to the output of the third inverter 113, and the emitter (e) of the NPN transistor Q1 is grounded. The gate (G) of the PMOS transistor Q2 is connected to the collector (c) of the NPN transistor Q1, and the source (S) of the PMOS transistor Q2 is connected to the LED group 41. When the external signal detection circuit 63 outputs a low-level signal, the corresponding third inverter 113 outputs a high-level signal, the NPN transistor Q1 is turned on, the gate (G) of the PMOS transistor Q2 is pulled low, the PMOS transistor Q2 is turned on, the LED switching circuit 221 is enabled, and the LED group 41 is turned on to emit light.

[0047] Please refer to Figure 3 Preferably, each LED light group includes an LED driving circuit, such as an NPN transistor Q3. The collector (c) of the NPN transistor Q3 is connected to the negative terminal of the LED, the base (b) of the NPN transistor Q3 is connected to the output terminal of the frequency adjustment unit 21, and the emitter (e) of the NPN transistor Q3 is grounded. With this configuration, when the LED switching circuit corresponding to the LED light group is enabled, its LEDs flash according to the PWM frequency of the output terminal of the frequency adjustment unit 21.

[0048] Preferably, the LED driver module 2 further includes an inter-board pin connection circuit 23; the output terminals of the third inverter 113, the fourth inverter 114 and the fifth inverter 115 are connected to the lamp switching unit 22 through the inter-board pin connection circuit 23; the output terminal of the frequency adjustment unit 21 is connected to the three LED driver circuits through the inter-board pin connection circuit 23.

[0049] In an alternative example, the audible and visual alarm is used for industrial gas detection, and the LED module 4 includes at least a red LED group and a blue LED group; when the red LED group is lit, it corresponds to a combustible gas alarm; when the blue LED group is lit, it corresponds to a toxic or harmful gas alarm.

[0050] Based on the above configuration, the audible and visual alarm in this embodiment achieves logic control entirely through hardware circuitry, eliminating the need for MCU software control, thus saving design costs and reducing design complexity. It also eliminates the need for hardware operations such as changing jumpers or DIP switches for functional control, enabling simple and intelligent switching of alarm states. More specifically, the configuration of five external signal detection circuits allows for arbitrary combinations of two different sound effects, two light flashing frequencies, and three light colors. Furthermore, any combination of sound effects, light flashing frequencies, and light colors can be configured and modified in real time via external signals, allowing a single audible and visual alarm to achieve multiple alarm states. By inputting different combinations of trigger signals at different trigger terminals, the combination of different audible and visual alarm signals emitted by the entire alarm can be adjusted to adapt to different needs and scenarios, especially in the field of industrial gas detection where different alarm levels of hazardous gases need to be distinguished.

[0051] It should be noted that the above embodiments can be combined with each other. The above description is only a description of preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present utility model.

Claims

1. An audible and visual alarm, characterized in that, include: Multi-channel inverting logic gate chip, LED driver module, sound alarm driver module, LED module and sound output device; The multi-channel inverter logic gate chip has multiple inverters, each inverter has a set of corresponding input terminals and output terminals, and the input terminals of the multiple inverters are respectively connected to the corresponding trigger terminals; The output terminals of the multiple inverters are respectively connected to the LED driver module and the sound alarm driver module; the LED module is connected to the LED driver module, and the sound output device is connected to the sound alarm driver module; The multi-channel inverting logic gate chip is configured to output different level signals to the LED driving module and the sound alarm driving module through the inverter based on different combinations of trigger signals at the trigger terminal, so as to drive the LED module and the sound output device to output corresponding alarm signals.

2. The audible and visual alarm device according to claim 1, characterized in that, The multi-channel inverter logic gate chip includes at least five inverters, namely a first inverter, a second inverter, a third inverter, a fourth inverter, and a fifth inverter; The first inverter corresponds to sound signal detection, and its corresponding trigger terminal is a sound external signal detection circuit; The second inverter corresponds to the flicker frequency signal detection, and its corresponding trigger terminal is the flicker frequency external signal detection circuit; The third inverter, the fourth inverter, and the fifth inverter correspond to the light color signal detection, and their corresponding trigger terminals are three types of external signal detection circuits for light colors.

3. The audible and visual alarm device according to claim 2, characterized in that, The sound alarm driving module is connected to the output terminal of the first inverter, and outputs two sound alarm signals to the sound output device based on the two level signals at the output terminal of the first inverter, so that the sound output device emits two alarm sounds.

4. The audible and visual alarm device according to claim 3, characterized in that, The sound alarm driving module includes a voice chip or an audio generation circuit; the sound output device includes a buzzer or a speaker.

5. The audible and visual alarm device according to claim 2, characterized in that, The LED driving module includes a frequency adjustment unit; the frequency adjustment unit is connected to the output terminal of the second inverter, and outputs two light flashing frequency signals to the LED module based on the two level signals at the output terminal of the second inverter, so that the LED module emits light at the two flashing frequencies.

6. The audible and visual alarm device according to claim 5, characterized in that, The frequency adjustment unit includes a 555 timer.

7. The audible and visual alarm device according to claim 2, characterized in that, The LED driving module includes a lamp switching unit, which is connected to the output terminals of the third inverter, the fourth inverter, and the fifth inverter. The lamp switching unit includes a three-way LED switching circuit, and the LED module includes three LED groups with different colors. Each LED group is connected to one of the LED switching circuits. The lamp switching unit switches the enable of the three LED switching circuits based on the two level signals at the output terminals of the third, fourth, and fifth inverters, so as to make the corresponding LED lamp group light up.

8. The audible and visual alarm device according to claim 7, characterized in that, The LED driver module includes an inter-board pin connection circuit and a frequency adjustment unit; the output terminals of the third inverter, the fourth inverter and the fifth inverter are connected to the lamp switching unit through the inter-board pin connection circuit. The output of the frequency adjustment unit is connected to the LED driver circuit through the inter-board pin connection circuit.

9. The audible and visual alarm device according to claim 1, characterized in that, The multi-channel inverting logic gate chip is 74HC04.

10. The audible and visual alarm device according to claim 1, characterized in that, The audible and visual alarm is used for industrial gas detection. The LED module includes at least a red LED group and a blue LED group. When the red LED group is lit, it corresponds to a combustible gas alarm. When the blue LED group is lit, it corresponds to a toxic or harmful gas alarm.

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