A remote fire alarm device based on the Internet of Things

Abstract

The present invention relates to the field of fire alarm technology, and in particular to a remote fire alarm device based on the Internet of Things, comprising: a fire detection module, for detecting fire data of a to-be-detected environment through a sensor group in the alarm device; a communication module, for transmitting the fire data to a cloud server; an alarm module, which is respectively connected to the fire detection module and the communication module, for issuing an alarm when the fire data exceeds a set threshold, including a buzzer for issuing an audible alarm and an LED indicator for issuing a visual alarm; a remote control module, which is respectively connected to the fire detection module, the communication module and the alarm module, for determining the photosensitivity of a flame sensor according to the variance of the number of times the buzzer does not issue an alarm or determining the transmission power of the alarm device according to the average delay time of the LED indicator for issuing an alarm. The present invention improves the alarm stability of the alarm device.

Description

Technical Field

[0001] The present invention relates to the technical field of fire alarms, and in particular to a remote fire alarm device based on the Internet of Things. Background Art

[0002] In the prior art, a remote fire alarm is a safety device used to detect fires in a timely manner and sound an alarm, thereby reminding people to escape and take countermeasures in a timely manner. They are usually installed in residences, office buildings, shopping malls and other places. Fire alarms mostly use smoke detectors to detect smoke particles in the air using photoelectric or ionization principles to achieve fire detection. Fire alarms are extremely important for fire prevention and life safety, and should be taken seriously and properly installed and maintained. With the development of science and technology, the Internet of Things technology is gradually being applied to fire alarms. After detecting smoke, the fire alarm can send fire information to management personnel or floor residents through the Internet of Things, thereby achieving a better fire alarm effect.

[0003] Chinese Patent Publication No.: CN118587835A discloses a remote fire alarm device and method based on the Internet of Things. The system includes: a first shell, a circular filter is fixedly connected inside the first shell, a first cavity is opened inside the first shell above the circular filter, a second cavity is opened inside the first shell below the circular filter, a battery, a smoke alarm and a wireless communication module are fixedly connected inside the second cavity, an annular slide groove and a positioning slot are opened below the first shell, multiple groups of air inlets are opened on the side of the first shell, multiple groups of air inlet filters are fixedly connected to the air inlets, an air outlet that penetrates to the outside of the first shell is opened on the side of the first cavity, an air inlet fan is arranged inside the first shell, and the second shell is fixedly connected above the first shell. A fixing slot is provided inside the second shell, an insertion slot is provided above the fixing slot and penetrates to the top of the second shell, a positioning slot is provided above the fixing slot, a plurality of groups of first support springs are fixedly connected inside the fixing slot, the other end of the first support spring is fixedly connected to a support top plate, a fixing plate is provided above the support top plate and a plurality of groups of screw fixing holes are provided above the fixing plate, a positioning plug is fixedly connected below the fixing plate, two groups of fixing blocks are fixedly connected to the side of the positioning plug, an ash bowl is provided below the first shell, a driving motor is fixedly connected below the ash bowl, the rotating shaft of the driving motor penetrates the ash bowl and is fixedly connected to two groups of positioning plugs inside the ash bowl, two groups of cleaning brushes are fixedly connected to the inside of the ash bowl, and two groups of quick installation mechanisms are fixedly connected to the inside of the ash bowl. It can be seen from this that the remote fire alarm device and method based on the Internet of Things have the problem that the dust floating in the air is attached to the surface of the flame sensor used to detect open flames, which affects the ability of the sensor to receive flame signals, thereby reducing the alarm stability of the alarm device. Summary of the invention

[0004] To this end, the present invention provides a remote fire alarm device based on the Internet of Things to overcome the problem in the prior art that dust floating in the air adheres to the surface of a flame sensor used to detect open flames, which affects the sensor's ability to receive flame signals and reduces the alarm stability of the alarm device.

[0005] To achieve the above-mentioned object, the present invention provides a remote fire alarm device based on the Internet of Things, comprising: a fire detection module, which is used to detect fire data of a detection environment through a sensor group in the alarm device, including a flame sensor arranged inside the alarm device to detect whether there is an open flame in the detection environment and a voltage sensor connected to the alarm device to detect the working voltage of the alarm device; a communication module, which is connected to the fire detection module, and is used to transmit the fire data to a cloud server; an alarm module, which is respectively connected to the fire detection module and the communication module, and is used to issue an alarm when the fire data exceeds a set threshold, including a buzzer for issuing a sound alarm and an LED indicator for issuing a visual alarm; a remote control module, which is respectively connected to the fire detection module, the communication module and the alarm module, and is used to determine the photosensitivity of the flame sensor according to the variance of the number of times the buzzer does not issue an alarm or determine the transmission power of the alarm device according to the average delay time for the LED indicator to issue an alarm, and determine the detection frequency of the fire data according to the average delay time for the LED indicator to issue an alarm and the fluctuation amplitude of the working voltage of the alarm device.

[0006] Furthermore, the remote control module is used to determine whether the alarm stability of the alarm device meets the requirements based on the variance of the proportion of times the buzzer does not sound an alarm. If the variance of the proportion of times the buzzer does not sound an alarm is greater than a preset first variance, it is determined that the alarm stability of the alarm device does not meet the requirements.

[0007] Furthermore, the remote control module is used to preliminarily determine that the functionality of the alarm device does not meet the requirements when the variance of the proportion of the number of times the buzzer does not issue an alarm is greater than the preset first variance and less than or equal to the preset second variance, and determine whether the functionality of the alarm device meets the requirements based on the average delay time for the LED indicator to issue an alarm.

[0008] Furthermore, the remote control module is used to reduce the photosensitivity of the flame sensor when the variance of the proportion of the number of times the buzzer does not sound an alarm is greater than the preset second variance;

[0009] The reduction range of the photosensitivity of the flame sensor is determined by the difference between the variance of the proportion of the number of times the buzzer does not sound an alarm and a preset second variance.

[0010] Furthermore, the remote control module is used to determine whether the functionality of the alarm device meets the requirements based on the average delay time for the LED indicator light to issue an alarm. If the average delay time for the LED indicator light to issue an alarm is greater than a preset first delay time, it is determined that the functionality of the alarm device does not meet the requirements.

[0011] Furthermore, the remote control module is used to preliminarily determine that the power supply stability of the alarm device does not meet the requirements when the average delay time for the LED indicator to send out an alarm is greater than a preset second delay time, and to determine whether the power supply stability of the alarm device meets the requirements based on the fluctuation amplitude of the working voltage of the alarm device.

[0012] Furthermore, the remote control module is used to increase the transmission power of the alarm device when the average delay time for the LED indicator to send out an alarm is greater than the preset first delay time and less than or equal to the preset second delay time.

[0013] Furthermore, the increase range of the transmission power of the alarm device is determined by the difference between the average delay time for the LED indicator to send out an alarm and a preset first delay time.

[0014] Furthermore, the remote control module is used to determine whether the power supply stability of the alarm device meets the requirements based on the fluctuation amplitude of the working voltage of the alarm device. If the fluctuation amplitude of the working voltage of the alarm device is greater than the preset fluctuation amplitude, it is determined that the power supply stability of the alarm device does not meet the requirements, and the detection frequency of fire data is increased.

[0015] Furthermore, the increase range of the detection frequency of the fire data is determined by the difference between the fluctuation range of the working voltage of the alarm device and a preset fluctuation range.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that the device of the present invention determines the photosensitivity of the flame sensor according to the variance of the proportion of the number of times the buzzer does not sound an alarm by setting a fire detection module, a communication module, an alarm module and a remote control module. Since the surface of the flame sensor used to detect open flames is attached with dust floating in the air, the ability of the sensor to receive flame signals is affected, and the accuracy of the alarm is reduced. By reducing the photosensitivity of the flame sensor, the response to changes in light in the surrounding environment will be weakened, thereby reducing the influence of dust and other impurities on the sensor, improving the sensor's ability to recognize flame signals, and further improving the accuracy of the alarm. The sending power of the alarm device is determined according to the average delay time for the LED indicator to sound an alarm. Since the device There are large equipment or high-voltage power lines between the location of the alarm device and the location of the server, which causes electromagnetic interference and thus affects the transmission and reception of the alarm signal. By increasing the transmission power of the alarm device, the signal strength is improved, and to a certain extent, the signal transmission capability in an interference environment is enhanced, making it easier to pass through the interference source and reach the server. The detection frequency of the fire data is determined according to the fluctuation amplitude of the working voltage of the alarm device. Due to partial damage at the interface of the power cord, a short circuit occurs, causing voltage fluctuations, which causes unstable operation of the alarm device. By increasing the detection frequency of the fire data, the voltage fluctuation can be detected and responded to more quickly, reducing the probability of inaccurate data due to voltage fluctuations and improving the alarm stability of the alarm device.

[0017] Furthermore, the device described in the present invention determines the photosensitivity of the flame sensor by setting a preset first variance and a preset second variance. Since dust floating in the air adheres to the surface of the flame sensor used to detect open flames, the ability of the sensor to receive flame signals is affected, and the accuracy of the alarm is reduced. By reducing the photosensitivity of the flame sensor, the response to changes in light in the surrounding environment will be weakened, thereby reducing the impact of impurities such as dust on the sensor, improving the sensor's ability to recognize flame signals, and then improving the accuracy of the alarm, and further improving the alarm stability of the alarm device.

[0018] Furthermore, the device described in the present invention determines the sending power of the alarm device by setting a preset first delay time and a preset second delay time. Since there are large equipment or high-voltage power lines between the location where the alarm device is set and the location of the server, it is affected by electromagnetic interference, thereby affecting the transmission and reception of the alarm signal. By increasing the sending power of the alarm device, the signal strength is improved, and the signal transmission capability in an interference environment is enhanced to a certain extent, making it easier for the signal to pass through the interference source and reach the server, further improving the alarm stability of the alarm device.

[0019] Furthermore, the device described in the present invention determines the detection frequency of fire data by setting a preset fluctuation amplitude. Due to partial damage at the interface of the power cord causing a short circuit, the voltage fluctuates, thereby causing the alarm device to work unstably. By increasing the detection frequency of fire data, the voltage fluctuation can be detected and responded to more quickly, reducing the probability of inaccurate data due to voltage fluctuations, and further improving the alarm stability of the alarm device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural block diagram of a remote fire alarm device based on the Internet of Things according to an embodiment of the present invention;

[0021] Figure 2 This is a logic flow chart of a remote fire alarm device based on the Internet of Things according to an embodiment of the present invention;

[0022] Figure 3 This is a specific structural block diagram of a fire detection module of a remote fire alarm device based on the Internet of Things according to an embodiment of the present invention;

[0023] Figure 4 The present invention is a block diagram of a specific structure of an alarm module of a remote fire alarm device based on the Internet of Things according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively an overall structural block diagram of a remote fire alarm device based on the Internet of Things, a logic flow chart, a specific structural block diagram of a fire detection module, and a specific structural block diagram of an alarm module according to an embodiment of the present invention. An embodiment of the present invention provides a remote fire alarm device based on the Internet of Things, comprising:

[0029] A fire detection module, used to detect fire data of the environment to be detected through a sensor group in the alarm device, including a flame sensor arranged inside the alarm device to detect whether there is an open flame in the environment to be detected and a voltage sensor connected to the alarm device to detect the working voltage of the alarm device;

[0030] A communication module connected to the fire detection module for transmitting the fire data to a cloud server;

[0031] an alarm module, which is connected to the fire detection module and the communication module respectively, and is used to issue an alarm when the fire data exceeds a set threshold, including a buzzer for issuing an audible alarm and an LED indicator for issuing a visual alarm;

[0032] A remote control module is respectively connected to the fire detection module, the communication module and the alarm module, and is used to determine the photosensitivity of the flame sensor according to the variance of the number of times the buzzer does not sound an alarm, or to determine the transmission power of the alarm device according to the average delay time for the LED indicator to sound an alarm, and to determine the detection frequency of the fire data according to the average delay time for the LED indicator to sound an alarm and the fluctuation amplitude of the working voltage of the alarm device.

[0033] Specifically, the fire detection module also includes:

[0034] A smoke sensor, which is arranged inside the alarm device and is used to detect the smoke concentration in the environment to be detected;

[0035] The temperature sensor is arranged inside the alarm device to detect the temperature in the environment to be detected.

[0036] Specifically, the environments to be tested include residential homes, office buildings, and shopping malls.

[0037] Specifically, the fire data includes the smoke concentration in the environment to be detected, the temperature in the environment to be detected, and the humidity in the environment to be detected.

[0038] Specifically, the set thresholds include a smoke concentration threshold of 20 ppm in the environment to be detected, a temperature threshold of 55° C. in the environment to be detected, and a humidity threshold of 60% in the environment to be detected.

[0039] Specifically, the transmission power of the alarm device is the power used when the alarm device transmits fire data.

[0040] Specifically, the photosensitivity of the flame sensor is determined based on the variance of the proportion of times when the buzzer does not sound an alarm. This is because dust in the air adheres to the surface of the flame sensor, resulting in a situation where an alarm should have been sounded but was not sounded.

[0041] In practice, the device of the present invention determines the photosensitivity of the flame sensor according to the variance of the proportion of the number of times the buzzer does not sound an alarm by setting a fire detection module, a communication module, an alarm module and a remote control module. Since the dust floating in the air is attached to the surface of the flame sensor used to detect open flames, the ability of the sensor to receive flame signals is affected, and the accuracy of the alarm is reduced. By reducing the photosensitivity of the flame sensor, the response to changes in light in the surrounding environment will be weakened, thereby reducing the impact of impurities such as dust on the sensor, improving the sensor's ability to recognize flame signals, and further improving the accuracy of the alarm. The sending power of the alarm device is determined according to the average delay time for the LED indicator to sound an alarm. Due to the location of the alarm device, There are large equipment or high-voltage power lines between the location of the server, which causes electromagnetic interference and thus affects the transmission and reception of alarm signals. By increasing the transmission power of the alarm device, the signal strength is improved, and to a certain extent, the signal transmission capability in an interference environment is enhanced, making it easier to pass through the interference source and reach the server. The detection frequency of the fire data is determined according to the fluctuation amplitude of the working voltage of the alarm device. Due to partial damage at the interface of the power cord, a short circuit occurs, causing voltage fluctuations, which causes unstable operation of the alarm device. By increasing the detection frequency of the fire data, voltage fluctuations can be detected and responded to faster, reducing the probability of inaccurate data due to voltage fluctuations and improving the alarm stability of the alarm device.

[0042] Specifically, the remote control module is used to obtain the number of times the buzzer does not sound an alarm and the total number of fires that occur within several alarm cycles, and calculate the variance of the proportion of the number of times the buzzer does not sound an alarm. If the variance of the proportion of the number of times the buzzer does not sound an alarm is greater than a preset first variance, it is determined that the alarm stability of the alarm device does not meet the requirements.

[0043] Specifically, the remote control module is used to preliminarily determine that the functionality of the alarm device does not meet the requirements when the variance of the proportion of the number of times the buzzer does not issue an alarm is greater than the preset first variance and less than or equal to the preset second variance, and to determine whether the functionality of the alarm device meets the requirements based on the average delay time for the LED indicator to issue an alarm.

[0044] It can be understood that the three intervals corresponding to the preset first variance and the preset second variance correspond to three situations respectively:

[0045] The first interval is when the variance of the number of times the buzzer does not sound an alarm is less than or equal to the preset first variance, corresponding to the situation where the alarm stability of the alarm device meets the requirements;

[0046] The second interval is when the variance of the number of times the buzzer does not sound an alarm is greater than the preset first variance and less than or equal to the preset second variance, corresponding to the situation where there is a large device or high-voltage power line between the location where the alarm device is set and the location of the server, resulting in the influence of electromagnetic interference, thereby affecting the transmission and reception of the alarm signal;

[0047] The third interval is when the variance of the number of times the buzzer does not sound an alarm is greater than the preset second variance. This is when dust floating in the air adheres to the surface of the flame sensor used to detect open flames, which affects the sensor's ability to receive flame signals and reduces the accuracy of the alarm.

[0048] Preferably, the preferred embodiment of the preset first variance is 0.02, and the preferred embodiment of the preset second variance is 0.04.

[0049] Specifically, the variance of the proportion of times the buzzer does not sound an alarm is the variance of the proportion of times the buzzer does not sound an alarm within several alarm cycles. The method for calculating the variance of the proportion of times the buzzer does not sound an alarm is a conventional technical means well known to technical personnel in this field. Therefore, the calculation process of the variance of the proportion of times the buzzer does not sound an alarm will not be repeated here.

[0050] Specifically, the proportion of times the buzzer does not sound an alarm is the ratio of the number of times the buzzer does not sound an alarm to the total number of fires that occur.

[0051] In implementation, the device of the present invention determines the alarm stability of the alarm device by setting a preset first variance and a preset second variance, thereby reducing the impact of the decrease in alarm accuracy of the alarm device due to inaccurate determination of the alarm stability of the alarm device, and further improving the alarm stability of the alarm device.

[0052] Specifically, the remote control module is used to reduce the photosensitivity of the flame sensor when the variance of the proportion of the number of times that the buzzer does not sound an alarm is greater than the preset second variance;

[0053] The reduction range of the photosensitivity of the flame sensor is determined by the difference between the variance of the proportion of the number of times the buzzer does not sound an alarm and a preset second variance.

[0054] Specifically, when the difference between the variance of the proportion of times the buzzer does not sound an alarm and the preset second variance is within 0.02, the lightsensitivity of the flame sensor is reduced to 0.9 times of the original value; when the difference between the variance of the proportion of times the buzzer does not sound an alarm and the preset second variance exceeds 0.02, the lightsensitivity of the flame sensor is reduced by 5 for every 0.01 that exceeds. For example, when the difference between the variance of the proportion of times the buzzer does not sound an alarm and the preset second variance is 0.04, the current lightsensitivity of the flame sensor is 60, and the lightsensitivity of the flame sensor after reduction is 60×0.9-5×2=44.

[0055] In implementation, the device of the present invention determines the photosensitivity of the flame sensor by setting a preset first variance and a preset second variance. Since dust floating in the air adheres to the surface of the flame sensor used to detect open flames, the sensor's ability to receive flame signals is affected, and the accuracy of the alarm is reduced. By reducing the photosensitivity of the flame sensor, the response to changes in ambient light will be weakened, thereby reducing the impact of dust and other impurities on the sensor, improving the sensor's ability to recognize flame signals, thereby improving the accuracy of the alarm, and further improving the alarm stability of the alarm device.

[0056] Specifically, the remote control module is used to obtain the delay time for the LED indicator to send out an alarm within several alarm cycles, and calculate the average delay time for the LED indicator to send out an alarm. If the average delay time for the LED indicator to send out an alarm is greater than the preset first delay time, it is determined that the functionality of the alarm device does not meet the requirements.

[0057] Specifically, the remote control module is used to preliminarily determine that the power supply stability of the alarm device does not meet the requirements when the average delay time for the LED indicator to send out an alarm is greater than a preset second delay time, and to determine whether the power supply stability of the alarm device meets the requirements based on the fluctuation amplitude of the working voltage of the alarm device.

[0058] It can be understood that the three intervals corresponding to the preset first delay duration and the preset second delay duration correspond to three situations respectively:

[0059] The first interval is when the average delay time of the LED indicator light to send out an alarm is less than or equal to the preset first delay time, corresponding to the situation where the functionality of the alarm device meets the requirements;

[0060] The second interval is when the average delay time for the LED indicator to send out an alarm is greater than the preset first delay time and less than or equal to the preset second delay time, corresponding to the situation where there is a large device or high-voltage power line between the location where the alarm device is set and the location of the server, resulting in the influence of electromagnetic interference, thereby affecting the transmission and reception of the alarm signal;

[0061] The third interval is when the average delay time for the LED indicator to send out an alarm is longer than the preset second delay time. The interface of the corresponding power cord is partially damaged, resulting in a short circuit, causing voltage fluctuations, and thus causing the alarm device to work unstable.

[0062] Preferably, the preferred embodiment of the preset first delay time length is 300ms, and the preferred embodiment of the preset second delay time length is 350ms.

[0063] Specifically, the average delay time for the LED indicator to send out an alarm is the ratio of the total delay time for the LED indicator to send out an alarm in a number of alarm cycles to the number of alarm cycles.

[0064] In implementation, the device of the present invention determines the functionality of the alarm device by setting a preset first delay time and a preset second delay time, thereby reducing the impact of decreased alarm stability of the alarm device due to inaccurate determination of the functionality of the alarm device, and further improving the alarm stability of the alarm device.

[0065] Specifically, the remote control module is used to increase the transmission power of the alarm device when the average delay time for the LED indicator to send out an alarm is greater than the preset first delay time and less than or equal to the preset second delay time.

[0066] Specifically, the increase range of the transmission power of the alarm device is determined by the difference between the average delay time for the LED indicator to send out an alarm and a preset first delay time.

[0067] Specifically, when the difference between the average delay time for the LED indicator to send out an alarm and the preset first delay time is within 110ms, the transmission power of the alarm device is increased to 1.1 times the original value; when the difference between the average delay time for the LED indicator to send out an alarm and the preset first delay time exceeds 110ms, the transmission power of the alarm device is increased by 5mW for every 50ms exceeding the original value. For example, the difference between the average delay time for the LED indicator to send out an alarm and the preset first delay time is 130ms, the current transmission power of the alarm device is 20mW, and the increased transmission power of the alarm device is 20×1.1+5×4=42mW.

[0068] Specifically, mW is the unit of the transmission power of the alarm device, which means milliwatt.

[0069] In implementation, the device described in the present invention determines the sending power of the alarm device by setting a preset first delay time and a preset second delay time. Since there are large equipment or high-voltage power lines between the location where the alarm device is set and the location of the server, it is affected by electromagnetic interference, thereby affecting the transmission and reception of the alarm signal. By increasing the sending power of the alarm device, the signal strength is improved, and the signal transmission capability in an interference environment is enhanced to a certain extent, making it easier to pass through the interference source and reach the server, further improving the alarm stability of the alarm device.

[0070] Specifically, the remote control module is used to obtain the working voltage of the alarm device and calculate the fluctuation amplitude of the working voltage of the alarm device. If the fluctuation amplitude of the working voltage of the alarm device is greater than the preset fluctuation amplitude, it is determined that the power supply stability of the alarm device does not meet the requirements, and the detection frequency of fire data is increased.

[0071] It can be understood that the two intervals corresponding to the preset fluctuation range correspond to two situations:

[0072] The first interval is when the fluctuation range of the working voltage of the alarm device is less than or equal to the preset fluctuation range, corresponding to the situation where the power supply stability of the alarm device meets the requirements;

[0073] The second interval is when the fluctuation amplitude of the working voltage of the alarm device is greater than the preset fluctuation amplitude, and the interface of the corresponding power line is partially damaged, resulting in a short circuit, causing voltage fluctuations, and thus causing the alarm device to work unstable.

[0074] Preferably, the preset fluctuation amplitude is 5V.

[0075] Specifically, the fluctuation amplitude of the working voltage of the alarm device is the difference between the maximum working voltage of the alarm device and the minimum working voltage of the alarm device in a single working cycle.

[0076] In implementation, the device of the present invention determines the power supply stability of the alarm device by setting a preset fluctuation amplitude, thereby reducing the impact of the decrease in alarm stability of the alarm device due to inaccurate determination of the power supply stability of the alarm device, and further improving the alarm stability of the alarm device.

[0077] Specifically, the increase range of the detection frequency of the fire data is determined by the difference between the fluctuation range of the working voltage of the alarm device and a preset fluctuation range.

[0078] Specifically, when the difference between the fluctuation amplitude of the working voltage of the alarm device and the preset fluctuation amplitude is within 3V, the detection frequency of the fire data increases to 1.2 times the original; when the difference between the fluctuation amplitude of the working voltage of the alarm device and the preset fluctuation amplitude exceeds 3V, the detection frequency of the fire data increases by 4Hz for every 1V exceeding it. For example, the difference between the fluctuation amplitude of the working voltage of the alarm device and the preset fluctuation amplitude is 5V, the current detection frequency of the fire data is 10Hz, and the increased detection frequency of the fire data is 10×1.2+5×2=22Hz.

[0079] During implementation, the device described in the present invention determines the detection frequency of fire data by setting a preset fluctuation amplitude. Due to partial damage at the interface of the power cord causing a short circuit, the voltage fluctuates, which causes the alarm device to work unstably. By increasing the detection frequency of fire data, the voltage fluctuation can be detected and responded to more quickly, reducing the probability of inaccurate data due to voltage fluctuations, and further improving the alarm stability of the alarm device.

[0080] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A remote fire alarm device based on the Internet of Things, characterized in that: include: A fire detection module, used to detect fire data of the environment to be detected through a sensor group in the alarm device, including a flame sensor arranged inside the alarm device to detect whether there is an open flame in the environment to be detected and a voltage sensor connected to the alarm device to detect the working voltage of the alarm device; A communication module connected to the fire detection module for transmitting the fire data to a cloud server; an alarm module, which is connected to the fire detection module and the communication module respectively, and is used to issue an alarm when the fire data exceeds a set threshold, including a buzzer for issuing an audible alarm and an LED indicator for issuing a visual alarm; A remote control module, which is respectively connected to the fire detection module, the communication module and the alarm module, and is used to determine the photosensitivity of the flame sensor according to the variance of the number of times the buzzer does not sound an alarm, or to determine the transmission power of the alarm device according to the average delay time for the LED indicator to sound an alarm, and to determine the detection frequency of the fire data according to the average delay time for the LED indicator to sound an alarm and the fluctuation amplitude of the working voltage of the alarm device; The fire detection module also includes: A smoke sensor, which is arranged inside the alarm device and is used to detect the smoke concentration in the environment to be detected; A temperature sensor, which is arranged inside the alarm device to detect the temperature in the environment to be detected; The fire data includes smoke concentration in the environment to be detected, temperature in the environment to be detected, and humidity in the environment to be detected; The remote control module is used to determine whether the alarm stability of the alarm device meets the requirements according to the variance of the proportion of the number of times the buzzer does not sound an alarm. If the variance of the proportion of the number of times the buzzer does not sound an alarm is greater than a preset first variance, it is determined that the alarm stability of the alarm device does not meet the requirements; The remote control module is used to preliminarily determine that the functionality of the alarm device does not meet the requirements when the variance of the proportion of the number of times the buzzer does not issue an alarm is greater than the preset first variance and less than or equal to the preset second variance, and determine whether the functionality of the alarm device meets the requirements based on the average delay time of the LED indicator to issue an alarm; The remote control module is used to reduce the photosensitivity of the flame sensor when the variance of the proportion of the number of times that the buzzer does not sound an alarm is greater than the preset second variance; The reduction range of the photosensitivity of the flame sensor is determined by the difference between the variance of the proportion of the number of times the buzzer does not sound an alarm and a preset second variance.

2. The remote fire alarm device based on the Internet of Things according to claim 1 is characterized in that: The remote control module is used to determine whether the functionality of the alarm device meets the requirements based on the average delay time for the LED indicator light to send out an alarm. If the average delay time for the LED indicator light to send out an alarm is greater than a preset first delay time, it is determined that the functionality of the alarm device does not meet the requirements.

3. The remote fire alarm device based on the Internet of Things according to claim 2 is characterized in that: The remote control module is used to preliminarily determine that the power supply stability of the alarm device does not meet the requirements when the average delay time for the LED indicator to send out an alarm is greater than a preset second delay time, and to determine whether the power supply stability of the alarm device meets the requirements based on the fluctuation amplitude of the working voltage of the alarm device.

4. The remote fire alarm device based on the Internet of Things according to claim 3 is characterized in that: The remote control module is used to increase the transmission power of the alarm device when the average delay time length of the LED indicator light to send out an alarm is greater than the preset first delay time length and less than or equal to the preset second delay time length.

5. The remote fire alarm device based on the Internet of Things according to claim 4 is characterized in that: The increase range of the transmission power of the alarm device is determined by the difference between the average delay time for the LED indicator to send out an alarm and the preset first delay time.

6. The remote fire alarm device based on the Internet of Things according to claim 5 is characterized in that: The remote control module is used to determine whether the power supply stability of the alarm device meets the requirements based on the fluctuation amplitude of the working voltage of the alarm device. If the fluctuation amplitude of the working voltage of the alarm device is greater than the preset fluctuation amplitude, it is determined that the power supply stability of the alarm device does not meet the requirements, and the detection frequency of fire data is increased.

7. The remote fire alarm device based on the Internet of Things according to claim 6 is characterized in that: The increase range of the detection frequency of the fire data is determined by the difference between the fluctuation range of the working voltage of the alarm device and a preset fluctuation range.

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