Oxygen content alarm

Abstract

The utility model discloses an oxygen content alarm, which belongs to the technical field of gas monitoring and comprises a PCB (printed circuit board), a monitoring module, a control module, a communication module, an alarm module and a display, the control module, the communication module, the alarm module and the display are arranged on the PCB, the monitoring module is electrically connected with the control module, and the monitoring module is used for detecting the oxygen content of the surrounding environment. The communication module is used for transmitting data to terminal equipment, the alarm module is used for sending alarm information, and the display is used for displaying oxygen content; the PCB is further provided with a switch, a power interface and a plurality of buttons. The monitoring module detects the oxygen content in real time, and the control module judges whether the oxygen content is lower than a preset threshold value or not, so that the alarm module is triggered to send out alarm information, other modules are driven to operate, teachers and students in a classroom are reminded to open windows for ventilation in time, a good teaching environment in the classroom is guaranteed, and the teaching efficiency is improved. Breathing health of teachers and students is effectively guaranteed, and ventilation delay caused by subjective feeling deviation of the teachers and students is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, and in particular to an oxygen content alarm. Background Technology

[0002] If teachers and students are in a low-oxygen environment for a long time, they are prone to fatigue and difficulty concentrating. However, most school classrooms currently lack convenient and effective air monitoring methods, and teachers and students often rely on subjective feelings to decide whether to open windows for ventilation, which is quite arbitrary and delayed.

[0003] Existing oxygen detection equipment is primarily geared towards industrial or medical applications, making it difficult to meet the specific needs of educational settings. For example, while industrial-grade oxygen detectors offer high accuracy, their complex operation makes them unsuitable for large-scale deployment in schools. Traditional oxygen content alarms typically provide only a single threshold alarm, making it difficult to optimize and adjust the alarm threshold based on classroom oxygen demand in different seasons and with varying numbers of students. This often leads to frequent false alarms or missed alarms, resulting in poor practical effectiveness, reduced reliability, and an inability to guarantee a good teaching environment in the classroom, thus failing to effectively protect the respiratory health of teachers and students. Therefore, there is an urgent need to design an oxygen content alarm suitable for classroom environments, featuring high stability and reliability, real-time monitoring, and intelligent ventilation reminders. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an oxygen content alarm that is suitable for classroom environments, has high stability and reliability, and can monitor and intelligently remind users of ventilation functions in real time.

[0005] To achieve the above objectives, this utility model provides an oxygen content alarm, including a PCB circuit board, a monitoring module, a control module, a communication module, an alarm module, and a display mounted on the PCB circuit board. The monitoring module is electrically connected to the control module. The monitoring module is used to detect the oxygen content of the surrounding environment. The communication module is used to transmit data to a terminal device. The alarm module is used to issue alarm information. The display is used to show the oxygen content. The PCB circuit board is also provided with a switch, a power interface, and several buttons, all of which are used to adjust the alarm threshold.

[0006] Preferably, the device further includes a housing and a cover plate, the cover plate being detachably connected to the housing, a partition forming inside the housing, the partition dividing the inner cavity of the housing into an upper cavity and a lower cavity, the monitoring module and the PLC circuit board being respectively disposed in the upper cavity and the lower cavity, a plurality of ventilation grooves being formed on the outer wall of the upper cavity, and wire grooves being formed on the partition plate.

[0007] Preferably, a window is provided on the side of the housing away from the cover plate, corresponding to the position of the display, and a transparent baffle is provided at the window; a button is provided on the side of the housing away from the cover plate, corresponding to the position of the switch and several buttons.

[0008] Preferably, a through hole is provided on the side wall of the housing corresponding to the position of the power interface.

[0009] Preferably, a plurality of mounting posts are formed at intervals in the upper cavity and the lower cavity, and the monitoring module and the PCB circuit board are detachably mounted to the plurality of mounting posts by a plurality of locking components.

[0010] Preferably, a connector is detachably mounted on the side of the cover plate away from the housing.

[0011] Beneficial effects:

[0012] 1. In this utility model, an oxygen content alarm device detects the oxygen content of the surrounding environment in real time through a monitoring module, and the control module determines whether the oxygen content is lower than a preset threshold. This triggers the alarm module to issue an alarm message and drives the display to show the oxygen content, thereby reminding teachers and students in the classroom to open windows for ventilation in time. This helps to ensure a good teaching environment in the classroom, effectively protects the respiratory health of teachers and students, and avoids ventilation delays caused by subjective perception bias of teachers and students.

[0013] 2. In this utility model of an oxygen content alarm, the oxygen content data can be packaged and sent to the teacher's terminal device through the communication module integrated on the PCB circuit board. This enables remote real-time monitoring and alarm push, and eliminates the need to frequently check the monitor. It realizes cross-classroom air quality management, improves response efficiency, and is simple and convenient to use.

[0014] 3. In this utility model of an oxygen content alarm, several buttons enable the utility model to flexibly adjust the alarm threshold of oxygen content to adapt to different seasons or classroom population densities, avoiding false alarms or missed alarms caused by fixed thresholds, thus improving the reliability and stability of use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an oxygen content alarm according to an embodiment of the present invention from a first-view perspective;

[0017] Figure 2 This is a schematic diagram of an oxygen content alarm device according to an embodiment of the present invention from a second perspective.

[0018] Figure 3 This is a schematic diagram of the structure of an oxygen content alarm after removing the housing, according to an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the housing structure of an oxygen content alarm according to an embodiment of the present invention.

[0020] In the diagram: 1-PCB circuit board; 2-Monitoring module; 3-Control module; 4-Communication module; 5-Alarm module; 6-Display; 7-Switch; 8-Power interface; 9-Button; 10-Housing; 11-Cover plate; 12-Baffle; 13-Upper cavity; 14-Lower cavity; 15-Ventilation groove; 16-Wire groove; 17-Window; 18-Button; 19-Mounting post; 20-Connector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] Example 1:

[0028] This utility model proposes an oxygen content alarm.

[0029] In one embodiment of this utility model, an oxygen content alarm includes a PCB circuit board 1, a monitoring module 2, a control module 3, a communication module 4, an alarm module 5, and a display 6 disposed on the PCB circuit board 1. The monitoring module 2 is electrically connected to the control module 3. The monitoring module 2 is used to detect the oxygen content of the surrounding environment. The communication module 4 is used to transmit data to a terminal device. The alarm module 5 is used to issue alarm information. The display 6 is used to display the oxygen content. The PCB circuit board 1 is also provided with a switch 7, a power interface 8, and several buttons 9. The buttons 9 are all used to adjust the alarm threshold.

[0030] Specifically, such as Figure 3As shown, in this utility model of an oxygen content alarm, since the control module 3, communication module 4, alarm module 5 and display 6 are integrated on the PCB circuit board 1, the control module 3 can coordinate the efficient collaborative work between the modules at the hardware level. For example, through the onboard circuit of the PCB board and the mechanical interface (such as plug-in terminal or ribbon cable) of the monitoring module 2, it can receive the oxygen content signal collected by the monitoring module 2 in real time and convert it into a digital signal to drive the operation of related modules (such as the alarm module 5 issuing an alarm when the oxygen content is insufficient, or the display 6 displaying the oxygen content of the surrounding environment in real time, etc.). The structural design is simple and reasonable.

[0031] Understandably, during use, the user can power the oxygen content alarm of this utility model by connecting an external charging cable to the power interface 8. When the switch 7 is pressed, the monitoring module 2 detects the oxygen content of the surrounding environment. The monitoring module 2 can be an electrochemical oxygen sensor, which features low power consumption, small size, and high oxygen selectivity, making it suitable for long-term continuous operation in classroom environments and easy to integrate into the PCB circuit board 1 or a separate module. Since the monitoring module 2 is electrically connected to the control module 3, the monitoring module 2 (electrochemical oxygen sensor) detects the oxygen content of the surrounding environment through the current signal generated by the oxidation-reduction reaction of oxygen on the electrode surface, and transmits the current signal to the control module 3. The control module 3 determines whether the oxygen content meets the preset threshold. If the oxygen content is lower than the preset threshold, the signal is transmitted to the alarm module 5 via the onboard circuit of the PCB. The alarm module 5 can be a buzzer, alarm light, or audible and visual alarm, which enables the alarm module 5 to issue an alarm message, thereby reminding teachers and students in the classroom to open the windows for ventilation, thus ensuring a good teaching environment in the classroom and effectively protecting the respiratory health of teachers and students. At the same time, the display 6 integrated on the PCB circuit board 1 can display the current oxygen content in real time, so that teachers and students can intuitively know the current oxygen content in the classroom and judge whether to open the windows for ventilation, avoiding ventilation delays caused by subjective perception bias of teachers and students.

[0032] It is worth noting that, since the PCB circuit board 1 also integrates a communication module 4, when the oxygen content in the classroom is lower than the preset threshold, the control module 3 transmits data to the communication module 4 through the onboard circuit of the PCB. The communication module 4 can be a Wi-Fi module or a Bluetooth module, etc. Through the communication module 4, the oxygen content data can be packaged and sent to the terminal device, which can be the teacher's mobile phone, computer, etc. (such as an APP, WeChat mini-program, or campus management platform). This allows the teacher to quickly and conveniently know whether the oxygen content in the classroom meets the standard, without having to frequently check the monitor 6. The teacher can receive oxygen content data and alarm information in real time through the mobile phone, computer, and other terminals, making it simple and convenient to use. In addition, the user can actively adjust the alarm threshold through several buttons 9. That is, the buttons 9 are connected to the PCB circuit through microswitches 7, triggering the threshold register of the control module 3 to be rewritten. This allows the present invention to adapt to different seasons or classroom population densities, flexibly adjusting the oxygen content alarm threshold, avoiding false alarms or missed alarms caused by fixed thresholds, and improving the reliability and stability of use.

[0033] In one embodiment, the system further includes a housing 10 and a cover plate 11, the cover plate 11 being detachably connected to the housing 10. A partition 12 is formed inside the housing 10, dividing the inner cavity of the housing 10 into an upper cavity 13 and a lower cavity 14. A monitoring module 2 and a PLC circuit board are respectively disposed in the upper cavity 13 and the lower cavity 14. Several ventilation grooves 15 are formed on the outer wall of the upper cavity 13, and wire grooves 16 are formed on the partition 12. Specifically, as shown... Figures 1 to 4 As shown, in this oxygen content alarm, the cover plate 11 and the housing 10 can be detachably connected by clips or screws, which facilitates the disassembly and maintenance of the internal modules. The structural design is simple and reasonable. Furthermore, since the partition plate 12 divides the inner cavity of the housing 10 into an upper cavity 13 and a lower cavity 14, the upper cavity 13 accommodates the monitoring module 2 and allows air circulation through the ventilation slot 15 on the housing 10, thereby ensuring the accuracy of the detection data of the monitoring module 2. At the same time, the lower cavity 14 is equipped with a PCB circuit board 1 (integrating functional units such as the control module 3 and the communication module 4), and a wire groove 16 is opened in the center of the partition plate 12. The wire groove 16 allows the connection wire between the monitoring module 2 and the PCB circuit board 1 to pass through, thereby realizing the electrical connection between the monitoring module 2 and the PCB circuit board 1. This not only optimizes the space utilization, but also reduces the electromagnetic interference of the circuit to the monitoring module 2 through the physical isolation of the partition plate 12. At the same time, the structural cooperation between the ventilation slot 15 and the wire groove 16 ensures the gas detection sensitivity and the neatness of the internal wiring. The overall structure is compact and easy to assemble and maintain.

[0034] In one embodiment, a window 17 is provided on the side of the housing 10 away from the cover plate 11, corresponding to the position of the display 6, and a transparent baffle is provided at the window 17; buttons 18 are provided on the side of the housing 10 away from the cover plate 11, corresponding to the positions of the switch 7 and several buttons 9. Specifically, as Figures 1 to 4 As shown, the housing 10 has a window 17 and a transparent baffle installed at the position corresponding to the display 6. The transparent baffle can be made of acrylic to ensure the visibility of the display 6 while also providing dust and water protection for the display 6. Furthermore, the housing 10 has a button 18 at the position corresponding to the switch 7 and the adjustment button 9. By precisely aligning the inner side of the button 18 with the micro switch 7 on the PCB circuit board 1, not only can the internal components be protected, but also a comfortable tactile feedback can be provided, and the alarm threshold can be quickly adjusted, making it convenient to use.

[0035] In one embodiment, specifically, as Figures 1 to 4 As shown, a through hole is provided on the side wall of the housing 10 corresponding to the position of the power interface 8, so that the user can connect the charging cable to complete the power supply of the entire device. The operation is simple and convenient.

[0036] In one embodiment, a plurality of mounting posts 19 are formed at intervals in the upper cavity 13 and the lower cavity 14, respectively. The monitoring module 2 and the PCB circuit board 1 are detachably mounted to the mounting posts 19 by a plurality of locking components. Specifically, as shown... Figure 3 and Figure 4 As shown, several mounting posts 19 are integrally formed with the housing 10, and screw holes are opened on their tops, so that the monitoring module 2 can be aligned with the mounting posts 19 of the upper cavity 13 through the mounting holes at the four corners. The PCB circuit board 1 is also arranged corresponding to the mounting posts 19 of the lower cavity 14. At the same time, stainless steel screws can be used as locking parts to securely install the monitoring module 2 and the PCB circuit board 1 onto the mounting posts 19, thereby not only improving the installation stability of each module, but also facilitating disassembly and maintenance.

[0037] In one embodiment, such as Figure 2 As shown, a connector 20 is detachably installed on the side of the cover plate 11 away from the housing 10. Specifically, the connector 20 can be any one of the following: a hanging rope, a hook, a magnet, adhesive tape, a buckle, or a pin. That is, a hanging rope can be screwed into the threaded hole, a strong magnet can be inserted into the groove, or adhesive tape can be fixed through the adhesive surface, etc. Preferably, the connector 20 in this embodiment is preferably a hook, so that the user can quickly and conveniently hang the present invention on the window frame, blackboard frame, or desk side panel, etc., improving the flexibility of the installation and deployment of the present invention and making it convenient to use.

[0038] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oxygen content alarm comprising a PCB circuit board (1), characterized in that, It also includes a monitoring module (2) and a control module (3), a communication module (4), an alarm module (5), and a display (6) disposed on the PCB circuit board (1). The monitoring module (2) is electrically connected to the control module (3). The monitoring module (2) is used to detect the oxygen content of the surrounding environment. The communication module (4) is used to transmit data to the terminal device. The alarm module (5) is used to issue alarm information. The display (6) is used to display the oxygen content. The PCB circuit board (1) is also provided with a switch (7), a power interface (8), and several buttons (9). The buttons (9) are all used to adjust the alarm threshold.

2. An oxygen content alarm according to claim 1, wherein, It also includes a housing (10) and a cover plate (11), the cover plate (11) being detachably connected to the housing (10), a partition plate (12) being formed inside the housing (10), the partition plate (12) dividing the inner cavity of the housing (10) into an upper cavity (13) and a lower cavity (14), the monitoring module (2) and the PLC circuit board being respectively arranged in the upper cavity (13) and the lower cavity (14), a plurality of ventilation grooves (15) being provided on the outer wall of the upper cavity (13), and wire grooves (16) being provided on the partition plate (12).

3. An oxygen content alarm according to claim 2, wherein, A window (17) is provided on the side of the housing (10) away from the cover plate (11) corresponding to the position of the display (6), and a transparent baffle is provided at the window (17); a button (18) is provided on the side of the housing (10) away from the cover plate (11) corresponding to the position of the switch (7) and several buttons (9).

4. An oxygen content alarm according to claim 3, wherein, A through hole is provided on the side wall of the housing (10) at the position corresponding to the power interface (8).

5. An oxygen content alarm according to claim 4, wherein, The upper cavity (13) and lower cavity (14) are respectively provided with a plurality of mounting posts (19) spaced apart. The monitoring module (2) and the PCB circuit board (1) are detachably mounted to the plurality of mounting posts (19) by a plurality of locking components.

6. An oxygen content alarm according to any one of claims 2-5, characterised in that, The cover plate (11) is detachably fitted with a connector (20) on the side away from the housing (10).

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