CN203149780U - Remote monitoring alarm system for air quality - Google Patents

Abstract

A remote monitoring system for air quality relates to the technical field of a signal processing technique, an embedded system and an alarm technique. For settling a problem of incapability of performing integrated management and monitoring on equipment and data currently, the utility model provides the remote monitoring alarm system. An air quality sensor is used for directly collecting harmful gas component in the air. The signal output end of the air quality sensor is connected with the signal input end of a signal conditioning circuit. A conditioned signal output end of the signal conditioning circuit is connected with an analog signal input end of an AD converter. The digital signal output end of the AD converter is connected with the signal input end of the embedded system. The signal input end of an alarm is connected with an alarm signal output end of an ARM microprocessor. The signal output end of the ARM microprocessor is connected with a signal input end of an upper computer through an RS485 communication interface. The remote monitoring system for air quality is suitable for performing remote monitoring on the air quality and alarming.

Description

Air quality remote monitoring and alarm system

technical field

The utility model relates to the field of electronic technology, in particular to the field of signal processing technology, embedded system and alarm technology. the

Background technique

With the advancement of information technology, people's life and work have begun to enter the era of automation and intelligence. At the same time, people's quality of life requirements are also correspondingly improved. In order to ensure that people's living environment is good, air quality must be required. The quality of the air directly affects people's physical health and mental state, so air quality detectors and corresponding alarms are indispensable. Existing air quality detectors cannot realize centralized management and monitoring of equipment by users, nor can they conduct real-time analysis and monitoring of data transmitted from equipment. the

Utility model content

The utility model provides an air quality remote monitoring and alarm system in order to solve the problem of centralized management and monitoring of equipment and data that cannot be realized by current air quality detectors. the

The air quality remote monitoring and alarm system includes an air quality monitoring terminal, a monitoring center host and an RS485 communication interface, and the air quality monitoring terminal includes an air quality sensor, a signal conditioning circuit, an AD converter and an embedded system;

The embedded system includes an ARM microprocessor and an alarm, and the air quality sensor is used to collect the content of one or more of carbon monoxide, nitrogen monoxide, nitrogen dioxide, ammonia and hydrogen sulfide in the air; the air quality sensor The signal output terminal of the signal conditioning circuit is connected to the signal input terminal of the signal conditioning circuit; the conditioning signal output terminal of the signal conditioning circuit is connected to the analog signal input terminal of the AD converter; the digital signal output terminal of the AD converter is connected to the digital signal input terminal of the ARM microprocessor The alarm signal output terminal of the ARM microprocessor is connected with the signal input terminal of the alarm; the embedded system is connected with the monitoring center host through the RS485 communication interface. the

The embedded system also includes a key, and the signal output end of the key is connected with the key signal input end of the ARM microprocessor. the

The embedded system also includes a display screen, and the signal input end of the display screen is connected with the display signal output end of the ARM microprocessor. the

The utility model realizes the remote monitoring of the air quality and the centralized management of the equipment through the connection between the air quality monitoring terminal and the monitoring center host through the RS485 communication interface. The key technologies involved in the utility model are signal processing, embedded system and alarm technology. It has excellent characteristics such as high stability, good reliability, high sensitivity, good practicability and wide application range. the

Description of drawings

Figure 1 is a schematic diagram of the electrical principle of the air quality remote monitoring and alarm system. the

Detailed ways

Specific embodiments one, in conjunction with Fig. 1 illustrate this specific embodiment, the air quality remote monitoring alarm system described in this embodiment, it comprises air quality monitoring terminal, monitoring center host computer 1 and RS485 communication interface 2, described air quality monitoring terminal Air quality sensor 7, signal conditioning circuit 6, AD converter 5 and embedded system 4;

Embedded system 4 comprises ARM microprocessor 10 and alarm 8,

The air quality sensor 7 is used to collect the content of one or more of carbon monoxide, nitrogen monoxide, nitrogen dioxide, ammonia and hydrogen sulfide in the air; the signal output terminal of the air quality sensor 7 and the signal input of the signal conditioning circuit 6 terminal connection; the conditioning signal output terminal of the signal conditioning circuit 6 is connected with the analog signal input terminal of the AD converter 5; the digital signal output terminal of the AD converter 5 is connected with the digital signal input terminal of the ARM microprocessor 10; the ARM microprocessor The alarm signal output terminal of 10 is connected with the signal input terminal of the alarm device 8; the embedded system 4 is connected with the monitoring center host 1 through the R5485 communication interface 2. the

Working principle: the specific embodiment adopts the air quality sensor 7 to collect harmful gas components in the air, transmits the collected information to the signal conditioning circuit 6 for adjustment and arrangement, and converts the analog quantity into a digital quantity through the AD converter 5 . The ARM microprocessor 10 receives the transmitted digital signal, and compares the signal with the value preset in the microprocessor to determine whether the air contains harmful gas, and if it contains harmful gas, detect whether the content exceeds the standard. If it exceeds the standard, the ARM microprocessor will send an alarm signal to the alarm device 8, and the alarm device 8 will remind the relevant personnel, so as to realize the early warning of the abnormal situation of the air quality. the

The air quality sensor 7 in this embodiment can be realized by a carbon monoxide sensor, a nitrogen monoxide sensor, a nitrogen dioxide sensor, an ammonia sensor or a hydrogen sulfide gas sensor, and can also be realized by combining several of the aforementioned sensors. the

The data transmission between the embedded system 4 and the monitoring center host 1 in this embodiment is realized through serial RS485 communication, which can realize remote monitoring of detection positions, centralized management of equipment and real-time analysis of data. the

Specific Embodiment 2. This embodiment is described in conjunction with FIG. 1. The difference between this specific embodiment and the air quality remote monitoring and alarm system described in Embodiment 1 is that the embedded system 4 also includes a button 9, and the signal output of the button 9 is End is connected with the key signal input end of ARM microprocessor 10. the

This embodiment adopts the ARM microprocessor 10 to realize data processing, and increases the key 9, and the key 9 can realize the setting of harmful gas content standards, and then realizes that the air quality remote monitoring and alarm system of this embodiment can be applicable to many different The needs of the occasion. the

Specific Embodiment 3. This embodiment is described in conjunction with FIG. 1. The difference between this specific embodiment and the air quality remote monitoring and alarm system described in Embodiment 2 is that the embedded system 4 also includes a display screen 3, and the display screen 3 The signal input end is connected with the display signal output end of ARM microprocessor 10. the

In this embodiment, a display screen 3 is added to realize the display of the measurement results, which is convenient for the user to intuitively obtain the detection results at the measurement site. the

Embodiment 4. The difference between this embodiment and the air quality remote monitoring and alarm system described in Embodiment 1 is that the alarm 8 is a luminous alarm or a buzzer. the

In this embodiment, any one of sound alarm, light alarm, sound and light alarm or remote alarm can be adopted. the

The structure of the air quality remote monitoring and alarm system described in the utility model is not limited to the specific structures described in the above-mentioned specific embodiments, but can also be a reasonable combination of the specific technical features described in the above-mentioned embodiments. the

Claims (4)

1. air quality remote monitor and alarm system, it is characterized in that it comprises air quality monitoring terminal, center host (1) and RS485 communication interface (2), described air quality monitoring terminal comprises air mass sensor (7), signal conditioning circuit (6), AD converter (5) and embedded system (4);

Embedded system (4) comprises ARM microprocessor (10) and alarm (8),

Air mass sensor (7) be used for to be gathered in air carbon monoxide, nitrogen monoxide, nitrogen dioxide, ammonia and the hydrogen sulfide gas one or more content; The signal output part of air mass sensor (7) is connected with the signal input part of signal conditioning circuit (6); The conditioned signal output terminal of signal conditioning circuit (6) is connected with the input end of analog signal of AD converter (5); The digital signal output end of AD converter (5) is connected with the digital signal input end of ARM microprocessor (10); The alarm signal output ends of ARM microprocessor (10) is connected with the signal input part of alarm (8); Embedded system (4) is connected with center host (1) by RS485 communication interface (2).

2. air quality remote monitor and alarm system according to claim 1 is characterized in that embedded system (4) also comprises button (9), and the signal output part of described button (9) is connected with the push button signalling input end of ARM microprocessor (10).

3. air quality remote monitor and alarm system according to claim 2 is characterized in that embedded system (4) also comprises display screen (3), and the signal input part of described display screen (3) is connected with the demonstration signal output part of ARM microprocessor (10).

4. air quality remote monitor and alarm system according to claim 1 is characterized in that alarm (8) is luminous alarm or hummer.