A portable gas detector

Abstract

This utility model relates to a portable gas detector, comprising a housing. The front of the housing has a display screen, buttons, and a combination alarm. The combination alarm includes an audible alarm, a visual alarm, and a vibration alarm. Inside the housing, there is also a front cover adapted to the housing. Above the front cover is a window for natural heat dissipation, composed of multiple vertically spaced frames, which helps dissipate heat generated by the sensor and controller, protecting and extending the service life of the sensor and controller. This utility model also uses different combinations of alarms to indicate different alarm levels, allowing users to distinguish different alarm levels from different perspectives, thus enhancing safety.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a portable gas detector. Background Technology

[0002] During mineral exploration and mining, gas detection devices are typically required to detect the content or concentration of gases such as carbon monoxide and oxygen in the air of mines or underground mines. Currently, such gas detection devices are being researched and used.

[0003] In the prior art, utility model patent publication number CN201891436U discloses a multi-gas concentration monitoring and alarm device, including multiple different types of gas concentration sensors, a battery, a housing, an alarm light, an alarm horn, and a processor. The motherboard, battery, and processor are fixed in the housing, and the alarm light is fixed under a transparent lampshade. Four sensors collect the concentration of corresponding gases in the ambient air in real time and convert them into electrical signals, which are then transmitted to the processor. The processor compares the obtained gas concentration values ​​with pre-stored danger concentration thresholds. When the oxygen concentration is lower than the danger threshold, it is considered that the environment is oxygen-deficient, and the alarm system is activated.

[0004] However, the heat generated between the sensor and processor in the above-mentioned prior art is not easily dissipated, causing the entire monitoring and alarm device to overheat, which in turn affects the service life of the monitoring and alarm device; in addition, the above alarm method is simple, only using color to distinguish different concentration levels, which may cause inconvenience for people with weak visual discrimination ability. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a portable gas detector to solve the aforementioned problems.

[0006] This utility model provides the following technical solution:

[0007] A portable gas detector includes a housing. The front of the housing has a display screen, buttons, and a combined alarm. Inside the housing are a controller, a power supply, a sensor, and a communication device. The sensor is connected to the controller, and the controller is connected to the power supply. The combined alarm includes an audible alarm, a visual alarm, and a vibration alarm. Inside the housing is also a front cover adapted to the housing. Above the front cover is a window for natural heat dissipation, which is composed of multiple vertically spaced frames.

[0008] Furthermore, the display screen is square and located at the bottom of the front of the housing, and there are three buttons located in the center of the front of the housing.

[0009] Furthermore, the sensor includes a methane sensor, an oxygen sensor, a carbon monoxide sensor, and a hydrogen sulfide sensor, with the four sensors arranged in two rows side by side at the top inside the housing.

[0010] Furthermore, an air inlet is provided at the top of the housing.

[0011] Furthermore, the sound alarm, light alarm, and vibration alarm are respectively a buzzer, a backlight, and a vibrator.

[0012] Furthermore, the communication device uses LoRa networking.

[0013] Furthermore, the window is also equipped with a temperature sensor, a heat sink, or a small fan.

[0014] This utility model has the following beneficial technical effects:

[0015] This invention features a front cover plate between the housing and the sensor, with a window for natural heat dissipation. The window is equipped with a heat sink or a small fan, which helps to dissipate the heat generated by the sensor and controller, protecting and extending the service life of the sensor and controller.

[0016] This invention incorporates a combination alarm system, including an audible alarm, a visual alarm, and a vibration alarm. By combining different alarms, different levels of alarm status are indicated, allowing users to distinguish different alarm levels of gas from different perspectives (sound, light, vibration), thus enhancing safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the outer surface structure of the shell of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal sensor structure of the housing of this utility model;

[0019] Figure 3 This is the front cover plate of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Air intake; 2. Buttons; 3. Display screen; 4. Sensors; 5. Front cover; 6. Window; 7. Frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] A portable gas detector includes a housing. The front of the housing has a display screen 3, buttons 2, and a combined alarm. Inside the housing are a controller, a power supply, a sensor 4, and a communication device. The sensor 4 is connected to the controller, and the controller is connected to the power supply. The combined alarm includes an audible alarm, a visual alarm, and a vibration alarm. The housing also has a front cover 5 adapted to the housing. Above the front cover is a window 6 for natural heat dissipation, which is composed of multiple vertically spaced frames 7.

[0025] Furthermore, the display screen 3 is square and located at the lower part of the front of the housing. There are three buttons 2, with the power button in the middle and the adjustment buttons on both sides. The buttons 2 are located in the middle of the front of the housing.

[0026] Specifically, the sensor 4 includes a methane sensor, an oxygen sensor, a carbon monoxide sensor, and a hydrogen sulfide sensor. The four sensors are arranged in two rows side by side at the top inside the housing, with two sensors in each row.

[0027] Specifically, the top of the housing is provided with an air inlet 1, through which the detection gas can be transmitted into the sensor 4.

[0028] Specifically, the sound alarm, light alarm, and vibration alarm are a buzzer, a backlight, and a vibrator, respectively.

[0029] The communication device uses LoRa networking and sends data to the monitoring host via LoRa wireless signal.

[0030] Furthermore, the window is also equipped with a temperature sensor, a heat sink or a small fan. The temperature sensor is connected to the controller, and the heat sink or small fan is electrically connected to the power supply. The temperature detected by the temperature sensor is transmitted to the controller in real time. When the controller detects that the temperature exceeds the set temperature, it controls the heat sink or small fan to work.

[0031] The working principle of this invention is as follows: When the detector is powered off, press and hold the power button to illuminate the backlight of the detector's display screen, indicating that the detector has transitioned from off to powered-on mode. During normal testing, pressing any key will turn on the backlight. Press the middle key to enter the settings menu. Press the left or right key to select a menu item, and press the middle key to access the selected menu item.

[0032] When the detector is in a low alarm state, the buzzer will emit a long-interval alarm sound, the yellow indicator light will flash synchronously, the numbers on the screen will change, the backlight and vibrator will also turn on at the same time, and the vibration frequency will be low, indicating a low alarm limit.

[0033] When the detected gas concentration exceeds the set high-limit alarm value, the detector enters a high-limit alarm state. At this time, the buzzer emits a short "beep beep beep..." alarm sound, the orange indicator light flashes synchronously, numbers change on the screen, the backlight and vibrator also turn on at the same time, and the vibration frequency is high, indicating a high-limit alarm.

[0034] When the detected gas concentration exceeds the test range, the detector's buzzer emits a short, intermittent "beep beep beep..." alarm sound, the red indicator light flashes synchronously, the backlight illuminates, the vibrator activates at a high frequency, and the screen displays the maximum range value of the gas being measured, indicating that the range has been exceeded. In the normal monitoring interface, pressing the left button will bring up the selected gas alarm record; clicking the middle button will display the selected gas record.

[0035] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A portable gas detector, characterized in that, The device includes a housing, the front of which is equipped with a display screen, buttons, and a combination alarm; inside the housing are a controller, a power supply, sensors, and a communication device; the sensors are connected to the controller, and the controller is connected to the power supply; the combination alarm includes an audible alarm, a visual alarm, and a vibration alarm; the housing also has a front cover that is adapted to the housing, and above the front cover is a window for natural heat dissipation, the window being composed of multiple vertically spaced frames.

2. A portable gas detector according to claim 1, characterized in that, The display screen is square and located at the bottom of the front of the housing. There are three buttons located in the center of the front of the housing.

3. A portable gas detector according to claim 1, characterized in that, The sensors include a methane sensor, an oxygen sensor, a carbon monoxide sensor, and a hydrogen sulfide sensor, arranged in two rows side by side at the top inside the housing.

4. A portable gas detector according to claim 1, characterized in that, An air inlet is provided at the top of the housing.

5. A portable gas detector according to claim 1, characterized in that, The sound alarm, light alarm, and vibration alarm are respectively a buzzer, a backlight, and a vibrator.

6. A portable gas detector according to claim 1, characterized in that, The communication device uses LoRa networking.

7. A portable gas detector according to claim 1, characterized in that, A temperature sensor is installed on the window.

8. A portable gas detector according to claim 7, characterized in that, The window is also equipped with heat sinks or a small fan.

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