Gas alarm with external standby battery

Abstract

The utility model relates to a gas alarm with an external standby battery, and belongs to the technical field of gas alarms, and the gas alarm with the external standby battery comprises a gas alarm body which is connected with a first male head and is used for detecting whether gas leaks or not and giving an alarm when the gas leaks; the battery module is connected with a second male head and a first female head and is used for supplying power to the gas alarm body; the power adapter is connected with a power plug and a second female head and is used for converting commercial power into a low-voltage direct-current power supply so as to charge the battery module; the first male head can be connected with the first female head or the second female head in an inserted mode, and the second female head can be connected with the second male head in an inserted mode. The fuel gas alarm has the beneficial effect that the fuel gas alarm adapts to varied market requirements under the condition that the structure and the circuit of the fuel gas alarm are not changed.

Description

Technical Field

[0001] This application relates to the technical field of gas alarms, and in particular to a gas alarm with an external backup battery. Background Technology

[0002] As natural gas, a clean energy source, becomes increasingly popular among urban residents, accidents caused by gas leaks are also gradually increasing. As a result, various regions are paying more attention to gas safety and promoting the installation and use of household gas leak alarms.

[0003] Due to the power consumption of gas sensors, gas alarms are generally powered by mains electricity. However, in some areas, power outages still occur. Once a power outage occurs, the gas alarm will not work, and the user will lose safety protection.

[0004] Currently, some products incorporate a backup battery within the gas alarm to continue operating during power outages. However, this type of product requires a complete redesign, both structurally and in terms of circuitry. Furthermore, the battery's capacity is limited by space constraints, thus restricting its operating time. Requiring redesign to meet ever-changing market demands increases the difficulty of research, development, and manufacturing, potentially leading to missed market opportunities. Utility Model Content

[0005] In order to adapt to the ever-changing market demands without changing the structure and circuitry of the gas alarm itself, this application provides a gas alarm with an external backup battery, employing the following technical solution:

[0006] A gas alarm with an external backup battery, comprising:

[0007] The gas alarm body is connected to a first male connector, which is used to detect whether there is a gas leak and to sound an alarm when there is a gas leak.

[0008] The battery module, connected to a second male connector and a first female connector, is used to power the gas alarm body.

[0009] A power adapter, with a power plug and a second female connector, is used to convert AC power into low-voltage DC power to charge the battery module.

[0010] The first male connector can be plugged into the first female connector or the second female connector, and the second female connector can be plugged into the second male connector.

[0011] By adopting the above technical solution, the battery module is normally in a charging state. Charging is cut off when the battery is fully charged. In the event of a mains power outage, the battery module utilizes its stored energy to continuously power the gas alarm body, ensuring that the gas alarm body is always in a state of monitoring for gas leaks and preventing safety accidents. The power adapter, battery module, and gas alarm body adopt a separate structure design, allowing for the replacement of gas alarm bodies of different models, specifications, or sizes to meet diverse customer needs and actual on-site installation requirements. The separate structure design also facilitates the replacement of power plugs with different mains power standards to meet the needs of different countries and regions, without requiring the redesign and manufacture of the gas alarm body. The independent battery module also facilitates the replacement of batteries of different capacities without affecting the production and manufacturing of the gas alarm body. In summary, the technical solution of this application can adapt to ever-changing market demands without changing the structure and circuitry of the gas alarm itself.

[0012] Optionally, the battery module has the following built-in features:

[0013] Illuminance detection unit, used to detect the illuminance of the surrounding environment;

[0014] The MCU processor is electrically connected to the illuminance detection unit and is used to receive illuminance and output a control signal when the illuminance is less than a threshold.

[0015] The LED beads are electrically connected to the MCU processor and are used to receive the control signals and light themselves up; the LED beads are evenly distributed and installed on the outer surface of the battery module.

[0016] By adopting the above technical solution, LED beads are lit up when the illuminance is low to start emergency lighting; the MCU processor controls different numbers of LED beads to light up according to different illuminance levels to control the brightness and provide users with comfort and convenience.

[0017] Optionally, the battery module also includes:

[0018] The human infrared detection unit is electrically connected to the MCU processor and is used to detect human infrared radiation. When the MCU processor determines that there is someone around the gas alarm and the illuminance is less than the threshold, it outputs a control signal.

[0019] By adopting the above technical solution, emergency lighting is unnecessary when there is sufficient illumination, as the ambient light is adequate for normal activities and movement of people in the area, thus saving energy. In low-light conditions, such as particularly dark days or nighttime, when the gas alarm itself does not sound, the battery module detects human infrared radiation through the human infrared detection unit. When someone is detected entering the area, the MCU processor controls the LED beads to automatically turn on the lighting, facilitating the movement of the person. When the person leaves the area, the lighting automatically turns off, saving energy. This achieves the beneficial effect of automatically providing lighting when someone enters the gas alarm area in low-light conditions and turning off the lights when the person leaves, thus saving energy.

[0020] Optionally, the battery module also includes:

[0021] The output current monitoring circuit is electrically connected to the battery and MCU processor in the battery module, respectively, to monitor the changes in the battery output current and determine the working status of the gas alarm body based on the changes in the output current.

[0022] By adopting the above technical solution, the circuit can monitor changes in the battery output current, that is, the current changes of the gas alarm body connected to the output terminal of the battery module. The gas alarm body consumes relatively little current under normal conditions; however, when the gas alarm body triggers an alarm, the current consumption increases due to the need to emit an alarm sound and control other circuits. By monitoring changes in the output current, the state of the gas alarm body can be identified, i.e., whether a gas leak alarm has occurred, and thus, whether emergency lighting should be activated. This technical solution requires no changes to the gas alarm circuitry or structure, making it highly adaptable. In low-light conditions, if the gas alarm body detects a gas leak and sounds an alarm, the output current monitoring circuit can detect the alarm and automatically activate the emergency lighting, regardless of whether anyone is currently in the gas alarm area. This prevents potential dangers caused by users needing to turn on electrical appliances or lighting when they hear the alarm and come to investigate; in other words, it preemptively illuminates the battery module's lighting function, facilitating observation and operation by those who arrive.

[0023] Optionally, the battery module also includes:

[0024] The charging current monitoring circuit is used to detect the charging current of the battery and prevent overcharging.

[0025] The charging voltage monitoring circuit is used to detect the charging voltage of the battery and prevent overvoltage.

[0026] Battery temperature monitoring circuit, used to detect the battery temperature;

[0027] The charging current monitoring circuit, the charging voltage monitoring circuit, and the battery temperature monitoring circuit are all electrically connected to the battery and the MCU processor.

[0028] By adopting the above technical solutions, the safety of battery module use can be further improved.

[0029] Optionally, the battery module's casing has a transparent detection window on the side facing the ground, and the detection end of the illuminance detection unit is placed at the transparent detection window.

[0030] By adopting the above technical solution, the transparent window enhances the protection of the illuminance detection unit without affecting the detection and judgment of illuminance. Because the opening is located on the side of the battery module's casing facing the ground (which can be understood as below the casing), it mitigates the influence of other lights.

[0031] Optionally, the human infrared detection unit is installed on the side of the battery module's housing facing the ground and facing slightly forward.

[0032] By adopting the above technical solution, it is easy to cover the detection of people of different heights.

[0033] In summary, this application has at least the following beneficial effects:

[0034] 1. The design of the gas alarm itself is not affected by the cost of expansion functions, and there is no need to repeatedly change the product design due to battery issues; in addition, different alarms can be replaced to meet the diverse needs of customers.

[0035] 2. The gas alarm unit should be installed in a suitable location based on the type of gas detected and the site conditions, without affecting the separate lighting function. For example, the gas alarm unit can be installed inside a cabinet or near the ground to detect liquefied gas leaks without affecting its lighting function.

[0036] 3. An infrared human detection unit has been added inside the battery module, which can identify whether there is someone in the area. The lighting will only be turned on when someone is there and turned off when no one is there. This is a reasonable application and saves energy.

[0037] 4. An illuminance detection unit has also been added inside the power module, which will only activate the emergency lighting when the ambient illuminance is below the threshold. Attached Figure Description

[0038] Figure 1 This is a first electrical connection diagram according to an embodiment of this application;

[0039] Figure 2 This is a second electrical connection diagram according to an embodiment of this application;

[0040] Figure 3 This is a structural block diagram of the battery module of this application. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the appendices of the embodiments of this utility model will be described below. Figure 1 -Appendix Figure 3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] This application discloses a gas alarm with an external backup battery. (See also...) Figure 1 The gas alarm may include a gas alarm body, a battery module, and a power adapter.

[0043] The gas alarm body is connected to a first male connector; the battery module is connected to a second male connector and a first female connector; and the power adapter is connected to a power plug and a second female connector.

[0044] One scenario is as follows:

[0045] After the power plug is plugged into the socket connected to the external mains power, the second female plug is plugged into the second male plug, and the first male plug is plugged into the first female plug, the power adapter converts the mains power into low-voltage DC power, thereby charging the battery in the battery module, and then the battery module supplies power to the gas alarm body.

[0046] Reference Figure 2 Another situation is as follows:

[0047] When the battery module is not needed, the second female connector of the power adapter can be directly plugged into the first male connector of the gas alarm body to form a complete gas alarm without affecting any design changes, making it flexible and versatile.

[0048] It should be noted that the power adapter's plug can be replaced according to the plug standards of different countries without affecting the gas alarm itself, requiring no design changes and meeting diverse market needs. Similarly, the battery module's battery capacity can be changed according to user requirements without altering the gas alarm's design, again meeting diverse market demands.

[0049] Reference Figure 3 The battery module has a built-in light intensity detection unit, MCU processor, LED beads, human infrared detection unit, output current monitoring circuit, charging current monitoring circuit, charging voltage monitoring circuit and battery temperature monitoring circuit.

[0050] The illuminance detection unit, human infrared detection unit, and LED beads are all electrically connected to the MCU processor. The output current monitoring circuit, charging current monitoring circuit, charging voltage monitoring circuit, and battery temperature monitoring circuit are all electrically connected to the battery and the MCU processor.

[0051] The LED beads are evenly distributed and installed on the outer surface of the battery module's housing. The housing of the LED beads is a transparent protective cover, which serves the purpose of being waterproof, dustproof, and light-transmitting.

[0052] Install the gas alarm body in a suitable location that facilitates gas leak detection, and install the battery module in a location that facilitates lighting.

[0053] In low light conditions, such as particularly dark days or nights, except where there is other external lighting, if the gas alarm itself does not sound (identified by the output current monitoring circuit), the battery module, through the human infrared detection unit, will send a control signal to the LED beads when it detects someone entering the area. The LED beads will then illuminate themselves to facilitate the movement of the person. When the person leaves the area, the lighting will automatically turn off to save energy.

[0054] In low light conditions, if the gas alarm detects a gas leak and sounds an alarm, its power consumption will increase due to the sound alarm and control of other circuits. The output current monitoring circuit can monitor the gas alarm and automatically activate the emergency lighting regardless of whether anyone is in the area. This prevents the need to turn on electrical appliances or lights when the user comes to check after hearing the alarm, thus avoiding potential dangers. In other words, it pre-activates the battery module's lighting function to facilitate observation and operation by those who come to check.

[0055] When there is sufficient light, there is no need to activate emergency lighting, as the ambient light is sufficient to ensure normal activities or movement for people in the area, thus saving energy.

[0056] The battery module is normally in a charging state, stopping charging when fully charged. In the event of a mains power outage, the battery module uses its stored energy to continuously power the gas alarm, ensuring the alarm is always monitoring for gas leaks and preventing accidents. In this situation, the LED lights illuminate first to determine if the ambient light is low, then to check for leak alarms or approaching individuals, conserving power to extend battery life.

[0057] Furthermore, this solution also allows for manual control of emergency lighting, eliminating the need for a separate switch. When manual activation is required, a hand gesture blocks the detection end of the illuminance detection unit, causing a sudden change in the illuminance signal. The human infrared detection unit detects the presence of someone and activates the lighting. Once the person leaves, the lighting automatically shuts off, achieving contactless lighting control.

[0058] The illuminance detection unit can employ a photosensitive sensor. A transparent detection window is opened on the side of the battery module casing facing the ground, and the sensor head is mounted in this window to detect the ambient illuminance and determine whether lighting is needed. This window is covered with a transparent material to enhance protection without affecting the detection and assessment of illuminance. Its installation position is close to the bottom of the battery casing to avoid interference from other lights in the area.

[0059] The human infrared detection unit can employ a pyroelectric monitoring circuit composed of a pyroelectric infrared sensor and a Fresnel lens, etc. It is installed on the side of the battery module facing the ground and slightly forward to cover people of different heights. When someone passes through the area, the pyroelectric sensor detects the infrared radiation emitted by the human body.

[0060] It should be emphasized that the relevant detection units and circuits in the battery module of this application are all mature products or circuits and are common applications in the industry. Therefore, they will not be elaborated on in detail and will not affect the implementation of this application or the understanding of the solution in this application.

[0061] In other embodiments, the gas alarm body can also output control signals to the battery module to transmit alarm status, facilitating the battery module's control to activate the LED beads. In this case, the interface needs at least three wire ports: two power ports and one signal port. The corresponding power adapter also needs to be modified to have three wire ports to allow direct connection between the power adapter and the gas alarm body when the spare battery is not in use.

[0062] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A gas alarm with an external backup battery, characterized in that, include: The gas alarm body is connected to a first male connector, which is used to detect whether there is a gas leak and to sound an alarm when there is a gas leak. The battery module, connected to a second male connector and a first female connector, is used to power the gas alarm body. A power adapter, with a power plug and a second female connector, is used to convert AC power into low-voltage DC power to charge the battery module. The first male connector can be plugged into the first female connector or the second female connector, and the second female connector can be plugged into the second male connector.

2. A gas alarm with an external backup battery as claimed in claim 1, characterized in that, The battery module has the following built-in features: Illuminance detection unit, used to detect the illuminance of the surrounding environment; The MCU processor is electrically connected to the illuminance detection unit and is used to receive illuminance and output a control signal when the illuminance is less than a threshold. The LED beads are electrically connected to the MCU processor and are used to receive the control signals and light themselves up; the LED beads are evenly distributed and installed on the outer surface of the battery module.

3. A gas alarm with an external backup battery as claimed in claim 2, characterized in that, The battery module also has the following built-in features: The human infrared detection unit is electrically connected to the MCU processor and is used to detect human infrared radiation. When the MCU processor determines that there is someone around the gas alarm and the illuminance is less than the threshold, it outputs a control signal.

4. A gas alarm with an external backup battery as claimed in claim 3, characterized in that The battery module also has the following built-in features: The output current monitoring circuit is electrically connected to the battery and MCU processor in the battery module, respectively, to monitor the changes in the battery output current and determine the working status of the gas alarm body based on the changes in the output current.

5. The gas alarm with an external backup battery according to claim 2, wherein The battery module also has the following built-in features: The charging current monitoring circuit is used to detect the charging current of the battery and prevent overcharging. The charging voltage monitoring circuit is used to detect the charging voltage of the battery and prevent overvoltage. Battery temperature monitoring circuit, used to detect the battery temperature; The charging current monitoring circuit, the charging voltage monitoring circuit, and the battery temperature monitoring circuit are all electrically connected to the battery and the MCU processor.

6. The gas alarm with an external backup battery according to claim 2, wherein The battery module has a transparent detection window on the side of its casing facing the ground, and the detection end of the illuminance detection unit is placed at the transparent detection window.

7. A gas alarm with an external backup battery as claimed in claim 3, wherein, The human infrared detection unit is installed on the side of the battery module's casing facing the ground and towards the front side.

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