CN210721802U - Carbon monoxide alarm device based on LED dot matrix display - Google Patents

Abstract

The application discloses carbon monoxide alarm device based on LED dot matrix shows relates to carbon monoxide and detects technical field. The device shows carbon monoxide concentration data that the carbon monoxide sensor detected through adopting the LED dot matrix display screen that comprises a plurality of LED dot matrix modules, can reduce the extra cost of device when improving the demonstration luminance and the typeface size of carbon monoxide concentration data. Simultaneously, the device is through setting up the carbon monoxide sensor for the casing protrusion, can make the carbon monoxide sensor fully contact the gas of waiting to detect in the environment to the sensitivity that the device detected carbon monoxide is improved. In addition, the device supplies power through setting up detachable power module, can also make the operation personnel solve the problem of power consumption rapidly through the mode of changing power module to improve the device's convenience.

Description

Carbon monoxide alarm device based on LED dot matrix display

Technical Field

The application relates to the technical field of carbon monoxide detection, in particular to a carbon monoxide alarm device based on LED dot matrix display.

Background

Coal gas is commonly used in iron and steel enterprises as an important fuel. Because the number of devices using coal gas in enterprises is large and coal gas pipelines are criss-cross, human poisoning, fire and explosion caused by coal gas frequently occur. Particularly, the gas poisoning of human body has serious consequences, which often cause permanent brain damage and even direct death of the sufferers. The reason is mainly because the carbon monoxide gas in the coal gas is a colorless, odorless, flammable and explosive toxic and combustible gas, and can cause the field operation personnel to be poisoned quickly under the unknown condition and not to react in time.

The carbon monoxide alarm instrument is an essential device for field operators, can measure the carbon monoxide concentration value in a closed space through a built-in carbon monoxide sensor, and then displays the data on a liquid crystal screen of the alarm instrument in real time. Meanwhile, when the carbon monoxide concentration value reaches the upper limit value, an audible and visual alarm prompt can be triggered, and life safety guarantee is provided for operators in the closed space.

Although the carbon monoxide alarm instrument is commonly used, the carbon monoxide poisoning incidents still occur frequently every year in steel enterprises. Through analysis and discovery, the carbon monoxide alarm instrument used at present has the following defects:

① the data of the carbon monoxide concentration of the alarm instrument can only be displayed on a dim and narrow liquid crystal display screen with small font and dark brightness, which is only suitable for watching in a short distance, the area of the liquid crystal display screen is usually less than 3.5cm x 2cm, and the display screen is monochrome, the field operators can not notice the concentration value and the change trend of the carbon monoxide in the environment while working, which leads to that the field operators can not respond to the change of the carbon monoxide concentration in the environment in time even carrying the alarm instrument, especially in the working space where gas leaks slowly.

② the built-in lithium ion rechargeable battery of the alarm instrument can not realize portable replacement, when the sudden task needs to be executed immediately but the battery power consumption is found, if the task is executed after charging, the response speed of the work task is seriously influenced, and if the alarm instrument is not carried, the safety of the operating personnel can not be ensured.

Disclosure of Invention

The embodiment of the application provides a carbon monoxide alarm device based on LED dot matrix display to improve the above defects of the carbon monoxide alarm instrument in the prior art.

In order to achieve the above purpose, the preferred embodiment of the present application adopts the following technical solutions:

a carbon monoxide alarm device based on LED dot matrix display comprises a shell, an LED dot matrix display screen, a carbon monoxide sensor, a driving circuit board and a single chip microcomputer; wherein the content of the first and second substances,

the LED dot matrix display screen comprises a plurality of LED dot matrix modules, and the LED dot matrix modules are respectively electrically connected with the driving circuit board;

the driving circuit board and the carbon monoxide sensor are electrically connected with the single chip microcomputer, and carbon monoxide concentration data detected by the carbon monoxide sensor are processed by the single chip microcomputer and then displayed by the LED dot matrix display screen under the control of the driving circuit board;

the carbon monoxide sensor is arranged in a protruding mode relative to the shell;

LED dot matrix display screen, driver circuit board and singlechip all hold inside the casing, and, the casing includes at least one transparent surface that comprises transparent material, LED dot matrix display screen laminating sets up the inner wall of transparent surface.

Optionally, in an embodiment of the present application, the LED dot matrix modules are connected to each other in a cascade manner to form a rectangular LED dot matrix display screen.

Optionally, in an embodiment of the present application, the apparatus further includes a power supply module;

the power supply module is electrically connected with the singlechip to supply power to the singlechip;

one side that the casing kept away from LED dot matrix display screen is provided with and is used for the holding power module's holding chamber, and, the upper end and the lower extreme in holding chamber are provided with the draw-in groove respectively, power module passes through draw-in groove detachably fixes the holding intracavity.

Optionally, in an embodiment of the present application, the single chip microcomputer includes a first interface and a second interface, and the power supply module includes a third interface and a fourth interface; wherein the content of the first and second substances,

the first interface is used for being connected with an external power supply so as to supply power to the singlechip through the external power supply;

the second interface is used for being connected with the third interface so as to supply power to the singlechip through the power supply module;

the fourth interface is used for being connected with an external power supply so as to charge the power supply module.

Optionally, in an embodiment of the present application, the first interface and the second interface are fixedly disposed on a side surface of the housing.

Optionally, in an embodiment of the present application, the power module includes a micro control chip, an electric quantity detection circuit, an electric quantity detection button, and an electric quantity indicator light; wherein the content of the first and second substances,

the electric quantity detection circuit is used for detecting the electric quantity of the power supply module;

the micro control chip is electrically connected with the electric quantity detection circuit, the electric quantity detection button and the electric quantity indicating lamp respectively;

the electric quantity indicator lamp displays the electric quantity of the power supply module according to the data detected by the electric quantity detection circuit under the control of the electric quantity detection button and the micro control chip.

Optionally, in an embodiment of the present application, the apparatus further includes a buzzer;

the buzzer is electrically connected with the single chip microcomputer and used for sending out an alarm prompt according to the carbon monoxide concentration data detected by the carbon monoxide sensor.

Optionally, in an embodiment of the present application, the device includes a plurality of buzzers, and the plurality of buzzers are respectively disposed on different faces of the housing.

Specifically, in an embodiment of the present application, the single chip microcomputer includes a VCC pin, a GND pin, and a first output pin, and a resistor and an NPN-type triode are connected between the buzzer and the single chip microcomputer; wherein the content of the first and second substances,

one end of the resistor is connected with a first output pin of the singlechip, and the other end of the resistor is connected with a base electrode of the NPN type triode;

an emitting electrode of the NPN type triode is connected with a GND pin of the single chip microcomputer;

the buzzer is connected between the collector of the NPN type triode and the VCC pin of the single chip microcomputer.

Optionally, in an embodiment of the present application, the single chip microcomputer includes an Arduino UNO single chip microcomputer, and the transparent material includes an acrylic plate.

Compared with the prior art, the carbon monoxide alarm device based on the LED dot matrix display provided in the embodiment of the application has at least the following technical effects or advantages:

1. the carbon monoxide alarm device based on LED dot matrix shows that this application embodiment provides shows carbon monoxide concentration data that carbon monoxide sensor detected through adopting the LED dot matrix display screen that comprises a plurality of LED dot matrix modules, for monochromatic liquid crystal display among the prior art, can improve the display brightness and the typeface size of carbon monoxide concentration data. Moreover, under the condition of enlarging and displaying the font in the same proportion, the hardware cost of the device can be reduced compared with the hardware cost of the liquid crystal display.

2. The utility model provides a carbon monoxide alarm device based on LED dot matrix shows through setting up the carbon monoxide sensor for the casing protrusion, can make the carbon monoxide sensor fully contact the gas that waits to detect in the environment to the sensitivity that the improvement device detected carbon monoxide.

3. The embodiment of the application provides a carbon monoxide alarm device based on LED dot matrix shows, through with LED dot matrix display screen, drive circuit board and singlechip holding inside the casing including at least one transparent face, then with the laminating setting of LED dot matrix display screen at the inner wall of this transparent face, can guarantee under the visual prerequisite of this LED display screen, protect LED dot matrix display screen, drive circuit board and singlechip through the casing.

4. The carbon monoxide alarm device based on LED dot matrix shows that this application embodiment provides supplies power through setting up detachable power module, can make the operation personnel solve the problem that the electric quantity consumes light rapidly through the mode of changing power module to improve the device's convenience.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a carbon monoxide alarm device based on LED dot matrix display according to an embodiment of the present application;

FIG. 2 is a schematic side sectional view of a carbon monoxide alarm device based on an LED dot matrix display according to an embodiment of the present disclosure;

fig. 3 is a schematic top cross-sectional view of a carbon monoxide alarm device based on an LED dot matrix display according to an embodiment of the present disclosure;

fig. 4 is a schematic control principle diagram of a carbon monoxide alarm device based on LED dot matrix display according to an embodiment of the present application;

fig. 5 is a schematic hardware circuit diagram of a carbon monoxide alarm device based on LED dot matrix display according to an embodiment of the present application.

Icon: 1-a shell; 2-LED dot matrix display screen; 3-a carbon monoxide sensor; 4-a drive circuit board; 5-pin; 6, a singlechip; 7-a power supply module; 8-a third interface; 9-a first interface; 10-a fourth interface; 11-electric quantity indicator light; 12-a second interface; 13-a charge detection button; 14-a card slot; 15-buzzer.

Detailed Description

The embodiment of the application provides a carbon monoxide alarm device based on LED dot matrix display to improve the problems of small display font, low brightness and the like of the carbon monoxide alarm instrument in the prior art.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

It should be noted that in the description of the present application, the terms "upper", "lower", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally used to place the products of the present invention, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that the terms "disposed" and "connected" are to be construed broadly unless otherwise explicitly stated or limited. For example, the connection can be fixed connection or detachable connection; can be directly connected or indirectly connected through an intermediate medium; either integrally connected or communicating between the interior of the two components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a carbon monoxide alarm device based on an LED (Light emitting diode) dot matrix display according to an embodiment of the present disclosure, fig. 2 is a schematic side sectional view of the carbon monoxide alarm device based on the LED dot matrix display according to the embodiment of the present disclosure, and fig. 3 is a schematic top sectional view of the carbon monoxide alarm device based on the LED dot matrix display according to the embodiment of the present disclosure.

In the embodiment of the application, the device comprises a shell 1, an LED dot matrix display screen 2, a carbon monoxide sensor 3, a driving circuit board 4 and a single chip microcomputer 6.

Wherein, this carbon monoxide sensor 3 sets up for casing 1 protrusion, and LED dot matrix display screen 2, drive circuit board 4 and singlechip 6 all hold inside casing 1. The housing 1 includes at least one transparent surface made of a transparent material (e.g., acrylic plate), and the LED dot matrix display 2 is attached to an inner wall of the transparent surface.

In the embodiment of the present application, the carbon monoxide sensor 3 is provided to protrude from the housing 1 in order to make the carbon monoxide sensor 3 sufficiently contact with the air in the environment, thereby improving the sensitivity of the device for detecting carbon monoxide to some extent.

Further, in this application embodiment, set up at least one transparent face that adopts transparent material to constitute through casing 1 to the device, then all hold LED dot matrix display screen 2, drive circuit board 4 and singlechip 6 inside casing 1 to with the laminating of this LED dot matrix display screen 2 set up the inner wall at this transparent face, its aim at, under the visual condition of guaranteeing this LED display screen, protect LED dot matrix display screen 2, drive circuit board 4 and singlechip 6 through this casing 1.

Further, referring to fig. 4, in the embodiment of the present application, the carbon monoxide sensor 3 is electrically connected to the single chip microcomputer 6, and is configured to detect a carbon monoxide concentration in an environment. The single chip microcomputer 6 is configured to process the carbon monoxide concentration data detected by the carbon monoxide sensor 3 (specifically, convert an analog signal (voltage signal) output by the carbon monoxide sensor 3 into a digital signal). The driving circuit board 4 is electrically connected with the single chip microcomputer 6, the driving circuit board 4 is connected with the LED dot matrix display screen 2 through the pins 5, and the driving circuit board is used for driving the LED dot matrix display screen 2 to display carbon monoxide concentration data detected by the carbon monoxide sensor 3 according to a control signal sent by the single chip microcomputer 6.

In the embodiment, the applicant believes that the basic solution is to increase the display brightness of the display screen and the size of the display font, aiming at the problem that in the prior art, the carbon monoxide alarm instrument has small display font and low brightness, so that an operator cannot remotely view carbon monoxide concentration data displayed on the carbon monoxide alarm instrument. And want to realize this purpose, can adopt colored liquid crystal display, also can adopt the LED dot matrix display screen of hi-lite to show the carbon monoxide concentration data that carbon monoxide sensing detected.

However, considering that the price of the LED dot matrix display is much cheaper than that of a color liquid crystal display with the same size, in order to control the hardware cost of the device, in the embodiment of the present application, a plurality of high-brightness LED dot matrix modules are used to form an LED dot matrix display 2, and then the carbon monoxide concentration data detected by the carbon monoxide sensor 3 is displayed through the LED dot matrix display 2. In other words, the purpose of displaying the carbon monoxide concentration data detected by the carbon monoxide sensing by using the LED dot matrix display screen 2 in the embodiment of the present application is to improve the display brightness and the font size of the carbon monoxide concentration data and reduce the additional cost of the device. In addition, in this application embodiment, this singlechip 6 can adopt Arduino UNO singlechip (based on the serial development board of Arduino of ATmega 328P), because the Arduino programming language that the Arduino UNO singlechip used is open source, its programming degree of difficulty is relatively lower, consequently, this application embodiment adopts Arduino UNO singlechip as the controller, can also reduce the development cost of product.

Specifically, referring to fig. 5, in an embodiment of the present application, the LED dot matrix display 2 includes 8 by 8 LED dot matrix modules, and the 8 LED dot matrix modules form a 16 by 32 rectangular LED dot matrix display 2 in a cascade manner. Specifically, the pins VCC, GND, CS and CLK of each LED dot matrix module are connected together, and then the pin DOUT of the previous LED dot matrix module is connected to the pin DIN of the next LED dot matrix module to form a whole rectangular LED dot matrix display screen 2.

It should be noted that, in the embodiment of the present application, it should be understood that the number of the LED dot matrix modules included in the LED dot matrix display 2 may be, but is not limited to 8, and the specific number may be determined according to the size of the display screen required for displaying the carbon monoxide concentration data. For example, when the display font of the carbon monoxide concentration data needs to be further enlarged, more LED dot matrix modules can be added and all the LED dot matrix modules can be cascaded to form a larger LED dot matrix display screen.

Further, with reference to fig. 5, in this embodiment, the driving circuit board 4 includes a MAX7219 chip, the chip is connected to the Arduino UNO single chip microcomputer 6, and the 8 LED dot matrix modules are electrically connected to the MAX7219 chip in the driving circuit board 4 through pins, respectively.

The carbon monoxide concentration data detected by the carbon monoxide sensor 3 are processed by the Arduino UNO single chip microcomputer 6, and are displayed by controlling each LED dot matrix module through the MAX7219 chip in the driving circuit board 4, so that the carbon monoxide concentration data with high brightness and large fonts can be displayed for field operation personnel, the concentration value and the variation trend of the carbon monoxide in the environment can be remotely checked in real time while the field operation personnel work, and the field operation personnel can make a timely response according to the carbon monoxide concentration variation condition of the environment.

Furthermore, considering that all carbon monoxide alarm instruments in the prior art are built-in lithium batteries, a lot of inconvenience exists when sudden tasks need to be executed immediately but the electricity consumption of the batteries is found. Therefore, the applicant thinks that a detachable power module can be arranged on the device to supply power to the Arduino UNO single-chip microcomputer 6, so that an operator can rapidly solve the problem of power consumption by replacing the power module.

Specifically, referring to fig. 1 to 3 again, in an embodiment of the present application, the device further includes a power module 7, a receiving cavity for receiving the power module 7 is disposed on a side (i.e., a back side of the device) of the housing 1 away from the LED dot matrix display 2, and a clamping groove 14 is disposed at an upper end and a lower end of the receiving cavity respectively, and the power module 7 is detachably fixed in the receiving cavity through the clamping groove 14. It should be understood that, in the present embodiment, the shape of the card slot 14 may be determined according to the shape of the power module 7, and is not specifically limited herein.

Further, with continued reference to fig. 1 to 3, in this embodiment, the Arduino UNO single-chip microcomputer 6 includes a first interface 9 and a second interface 12, and the power module 7 includes a third interface 8 and a fourth interface 10.

Wherein, first interface 9 is used for being connected with external power supply to do through external power supply does Arduino UNO singlechip 6 supplies power. Specifically, when an external power supply (such as a 220V power supply) is arranged in the working environment, the external power supply can be connected to the first interface 9 through the power adapter after being transformed, so as to supply power to the Arduino UNO singlechip 6.

The second interface 12 is used for being connected with the third interface 8 to supply power for the Arduino UNO singlechip 6 through the power module 7. Specifically, when the working environment has no external power supply, the second interface 12 may be connected to the third interface 8 through a connection line, and then the power module 7 supplies power to the Arduino UNO single-chip microcomputer 6. And when the power supply module 7 is not powered, the power supply module 7 can be replaced to continuously supply power to the Arduino UNO singlechip 6.

The fourth interface 10 is used for connecting with an external power supply to charge the power module 7. Specifically, when the power module 7 is not powered and the device is not required to be used currently, an external power source can be connected through the fourth interface 10 to charge the power module 7. In the embodiment of the present application, the first interface 9, the second interface 12, the third interface 8, and the fourth interface 10 may be any one of a conventional rectangular USB interface, a lighting interface, a type-c interface, a circular interface, a trapezoid interface, and the like.

Further, because the third interface 8 and the fourth interface 10 need to be disposed at two ends of the power module 7 to ensure convenience in use due to the limitation of the installation manner of the power module 7, in an embodiment of the present application, in order to facilitate connection with an external power source and the power module 7, the first interface 9 and the second interface 12 may be fixedly disposed at the side of the housing 1.

Further, referring to fig. 2, in an embodiment of the present application, the power module 7 includes a micro control chip, a power detection circuit, a power detection button 13, and a power indicator 11. Wherein, electric quantity detection circuitry is used for detecting the electric quantity of power module 7, and little the control chip respectively with electric quantity detection circuitry, electric quantity detection button 13 and electric quantity pilot lamp 11 electric connection. When the operating personnel need look over the residual capacity of power module 7, can be through operating this electric quantity detection button 13, then look over the residual capacity of power module 7 according to the display conditions of this electric quantity pilot lamp 11 to the operating personnel of being convenient for carries out the work arrangement according to the electric quantity condition of power module 7, and the electric quantity is used up and is brought inconvenience for the operating personnel in the middle of preventing the operation. It should be noted that the electric quantity detection and checking principle involved in this embodiment may refer to the working principle of the power bank in the prior art, and is not described herein again.

Referring again to fig. 1 to 3, in an embodiment of the present application, a buzzer 15 is further provided to the apparatus in this embodiment, in consideration that an operator cannot check carbon monoxide concentration data displayed on the carbon monoxide alarm at any time. This bee calling organ 15 and Arduino UNO singlechip 6 electric connection for according to the carbon monoxide concentration data that carbon monoxide sensor 3 detected send the warning suggestion, specifically, when detecting the carbon monoxide concentration in the current environment and surpassing the default, just send sound and indicate the field operation personnel promptly.

Further, in an embodiment of the present application, the apparatus may include a plurality of buzzers 15, and the plurality of buzzers 15 are respectively disposed on different surfaces of the housing 1, so that the alarm sound of the apparatus may be transmitted in various directions, considering that the sound transmission effect of the buzzer 15 may be affected by the position of the buzzer 15, and the sound prompt effect may be less desirable when the position of the worker is away from the buzzer 15.

Specifically, please refer to fig. 5, in an embodiment of the present application, the Arduino UNO single chip microcomputer 6 includes a VCC pin, a GND pin, and a first output pin, and a resistor and an NPN type transistor are connected between the buzzer 15 and the Arduino UNO single chip microcomputer 6. One end of the resistor is connected with a first output pin of the Arduino UNO singlechip 6, and the other end of the resistor is connected with a base electrode of the NPN type triode. The emitter of the NPN type triode is connected with a GND pin of the Arduino UNO singlechip 6. The buzzer 15 is connected between the collector of the NPN type triode and the VCC pin of the Arduino UNO single chip microcomputer 6.

It should be understood that in the present embodiment, the NPN transistor is equivalent to a switch for controlling the operation state of the buzzer 15, and the resistance of the resistor may be, but is not limited to, 10k Ω. This first output pin is one of them in the output pin of Arduino UNO singlechip 6, and its concrete pin number that corresponds can be according to the control program of the inside settlement of Arduino UNO singlechip 6 and decide. When the concentration of carbon monoxide detected by the carbon monoxide sensor 3 exceeds a preset threshold value, the first output pin outputs a high level, and the buzzer 15 makes a sound at the moment, so that the prompt is given to field operators.

In summary, the carbon monoxide alarm device based on the LED dot matrix display provided in the embodiment of the present application has the following technical effects or advantages, compared with the prior art:

1. the carbon monoxide alarm device based on LED dot matrix shows that this application embodiment provides shows carbon monoxide concentration data that carbon monoxide sensor detected through adopting the LED dot matrix display screen that comprises a plurality of LED dot matrix modules, for monochromatic liquid crystal display among the prior art, can improve the display brightness and the typeface size of carbon monoxide concentration data. Moreover, under the condition of enlarging and displaying the font in the same proportion, the hardware cost of the device can be reduced compared with the hardware cost of the liquid crystal display.

2. The carbon monoxide alarm device based on LED dot matrix display that this application embodiment provided can make the device obtain the process early warning function through the demonstration luminance and the typeface size that improve carbon monoxide concentration data. Specifically, the concentration value and the change trend of the carbon monoxide in the environment can be remotely checked in real time by field workers while working, and the field workers can make a response in time according to the change condition of the carbon monoxide concentration in the environment.

3. The utility model provides a carbon monoxide alarm device based on LED dot matrix shows through setting up the carbon monoxide sensor for the casing protrusion, can make the carbon monoxide sensor fully contact the gas that waits to detect in the environment to the sensitivity that the improvement device detected carbon monoxide.

4. The embodiment of the application provides a carbon monoxide alarm device based on LED dot matrix shows, through with LED dot matrix display screen, drive circuit board and singlechip holding inside the casing including at least one transparent face, then with the laminating setting of LED dot matrix display screen at the inner wall of this transparent face, can guarantee under the visual prerequisite of this LED display screen, protect LED dot matrix display screen, drive circuit board and singlechip through the casing.

5. The carbon monoxide alarm device based on LED dot matrix shows that this application embodiment provides supplies power through setting up detachable power module, can make the operation personnel solve the problem that the electric quantity consumes light rapidly through the mode of changing power module to improve the device's convenience.

The above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A carbon monoxide alarm device based on LED dot matrix display is characterized by comprising a shell, an LED dot matrix display screen, a carbon monoxide sensor, a driving circuit board and a single chip microcomputer; wherein the content of the first and second substances,

the LED dot matrix display screen comprises a plurality of LED dot matrix modules, and the LED dot matrix modules are respectively electrically connected with the driving circuit board;

the driving circuit board and the carbon monoxide sensor are electrically connected with the single chip microcomputer, and carbon monoxide concentration data detected by the carbon monoxide sensor are processed by the single chip microcomputer and then displayed by the LED dot matrix display screen under the control of the driving circuit board;

the carbon monoxide sensor is arranged in a protruding mode relative to the shell;

LED dot matrix display screen, driver circuit board and singlechip all hold inside the casing, and, the casing includes at least one transparent surface that comprises transparent material, LED dot matrix display screen laminating sets up the inner wall of transparent surface.

2. The apparatus of claim 1, wherein the plurality of LED dot matrix modules are connected to each other in a cascade fashion to form a rectangular LED dot matrix display screen.

3. The apparatus of claim 1, wherein the apparatus further comprises a power module;

the power supply module is electrically connected with the singlechip to supply power to the singlechip;

one side that the casing kept away from LED dot matrix display screen is provided with and is used for the holding power module's holding chamber, and, the upper end and the lower extreme in holding chamber are provided with the draw-in groove respectively, power module passes through draw-in groove detachably fixes the holding intracavity.

4. The device of claim 3, wherein the single chip microcomputer comprises a first interface and a second interface, and the power supply module comprises a third interface and a fourth interface; wherein the content of the first and second substances,

the first interface is used for being connected with an external power supply so as to supply power to the singlechip through the external power supply;

the second interface is used for being connected with the third interface so as to supply power to the singlechip through the power supply module;

the fourth interface is used for being connected with an external power supply so as to charge the power supply module.

5. The device of claim 4, wherein the first port and the second port are fixedly disposed on a side of the housing.

6. The device of claim 3, wherein the power module comprises a micro control chip, a power detection circuit, a power detection button, and a power indicator; wherein the content of the first and second substances,

the electric quantity detection circuit is used for detecting the electric quantity of the power supply module;

the micro control chip is electrically connected with the electric quantity detection circuit, the electric quantity detection button and the electric quantity indicating lamp respectively;

the electric quantity indicator lamp displays the electric quantity of the power supply module according to the data detected by the electric quantity detection circuit under the control of the electric quantity detection button and the micro control chip.

7. The device of claim 3, wherein the device further comprises a buzzer;

the buzzer is electrically connected with the single chip microcomputer and used for sending out an alarm prompt according to the carbon monoxide concentration data detected by the carbon monoxide sensor.

8. The device of claim 7, wherein the device comprises a plurality of buzzers, each disposed on a different face of the housing.

9. The device of claim 8, wherein the single chip microcomputer comprises a VCC pin, a GND pin and a first output pin, and a resistor and an NPN type triode are connected between the buzzer and the single chip microcomputer; wherein the content of the first and second substances,

one end of the resistor is connected with a first output pin of the singlechip, and the other end of the resistor is connected with a base electrode of the NPN type triode;

an emitting electrode of the NPN type triode is connected with a GND pin of the single chip microcomputer;

the buzzer is connected between the collector of the NPN type triode and the VCC pin of the single chip microcomputer.

10. The apparatus of any one of claims 1-9, wherein the single chip microcomputer comprises an Arduino UNO single chip microcomputer, and the transparent material comprises an acrylic board.

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