CN108305430B - A fire warning system - Google Patents

Abstract

An embodiment of the present invention provides a fire early warning system, which includes: a thermoelectric temperature sensor and a signal transmission control component using a thermoelectric material as a temperature measurement device; the temperature measurement device is used to sense the temperature of a scene to be monitored; One end is made of P-type thermoelectric material, and the other end is made of N-type thermoelectric material, and the rate of change of the thermoelectric characteristic value at both ends is different with temperature change; the thermoelectric temperature sensor and the signal transmission control part are electrically connected to form a closed circuit; the thermoelectric temperature sensor, It is used to generate current to supply power to the circuit when there is a difference between the thermoelectric characteristic values of the two temperature sensing terminals; the signal transmission control component is used to generate and broadcast a target when the current generated by the thermoelectric temperature sensor reaches a preset current critical value Fire alarm signal and target positioning signal used to indicate the location of signal transmission control components. By applying the solutions provided by the embodiments of the present invention, fire early warning in a complex environment can be realized.

Description

A fire warning system

technical field

The invention relates to the technical field of early warning systems, in particular to a fire early warning system.

Background technique

Fire is one of the most frequent and common major disasters that threaten public safety and social development. Therefore, it is very important to establish a sound early warning system for fire.

Sensors are widely used in various fire warning systems because they can sense various types and different ranges of measurement information and can meet the needs of different application directions.

However, most of the sensor-based fire warning systems currently on the market use an external power supply, and have the problems of complex system structure, small temperature tolerance range, poor stability, and low sensitivity, so they cannot be used in complex environments.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a fire early warning system, so as to realize the early warning of fire in a complex environment. The specific technical solutions are as follows:

An embodiment of the present invention provides a fire early warning system. The fire early warning system includes: a thermoelectric temperature sensor and a signal transmission control component using a thermoelectric material as a temperature measuring device; wherein:

The temperature measuring device is used to sense the temperature of the scene to be monitored; it has two temperature sensing ends, of which one end uses a P-type thermoelectric material, the other end uses an N-type thermoelectric material, and the two temperature sensing ends use the thermoelectric material. The rate of change of thermoelectric characteristic value with temperature change is different;

The thermoelectric temperature sensor and the signal transmission control part are electrically connected to form a closed circuit;

The pyroelectric temperature sensor is used to generate a current to supply power to the circuit when there is a difference in the pyroelectric characteristic values of the two temperature sensing ends of the temperature measuring device;

The signal transmission control part is used for judging whether the current generated by the thermoelectric temperature sensor reaches a preset current critical value; if it reaches the current critical value, a target fire alarm signal is generated and used to indicate the signal transmission control The target positioning signal at the location of the component broadcasts the target fire alarm signal and the target positioning signal.

Optionally, one of the two temperature sensing ends of the temperature measuring device is used to sense the temperature of the preset object in the scene to be monitored.

Optionally, the signal transmission control component is also used to receive the fire alarm signal and the positioning signal broadcast by the signal transmission control component in other fire early warning systems, and select the fire alarm signal from the preset fire early warning scheme and the received fire alarm signal. A fire warning scheme that matches the alarm signal and the positioning signal.

Optionally, the signal transmission control component includes: a signal comparator, a signal recorder, a signal locator, a signal amplifier and a wireless signal transmitter;

in:

The signal comparator is used to compare the current generated by the thermoelectric temperature sensor with the current threshold value, and when the current generated by the thermoelectric temperature sensor is greater than or equal to the current threshold value, generate the target fire alarm signal , and send the target fire alarm signal to the signal recorder and signal amplifier;

the signal recorder, for receiving and storing the target fire alarm signal generated by the signal comparator, and triggering the signal locator to generate a target locating signal for indicating the location of the signal locator;

the signal locator, for generating the target positioning signal and sending the target positioning signal to the signal amplifier;

The signal amplifier is used to receive the target fire alarm signal and the target positioning signal, and amplify the target fire alarm signal and the target positioning signal;

The wireless signal transmitter is used for broadcasting the target fire alarm signal and target positioning signal.

Optionally, the signal transmission control component further includes: a signal receiver and a signal controller; wherein:

The signal receiver is used for receiving fire alarm signals and positioning signals broadcast by signal transmission control components in other fire early warning systems;

The signal controller is configured to, when it is determined that the received signal contains a fire alarm signal and the distance between the fire occurrence place represented by the received positioning signal and the position of the signal controller is outside the preset range, The received fire alarm signal and positioning signal are sent to the signal recorder;

The signal recorder is also used to receive and store the fire alarm signal and positioning signal sent by the signal controller, and send the received fire alarm signal and positioning signal to the signal amplifier;

The signal amplifier is also used for receiving the fire alarm signal and the positioning signal sent by the signal recorder, and amplifying the received signals.

Optionally, the signal receiver is further configured to receive the fire control signal broadcast by the fire terminal control system, and send the fire control signal to the signal controller;

The signal controller is further configured to judge whether the received signal is a fire control signal, and if so, start a fire protection plan corresponding to the fire control signal.

Optionally, the system further includes: a protective top cover, a support base and a connecting rod;

Wherein, the protective top cover includes: a waterproof partition with ventilation holes, a fireproof board with ventilation holes, a support platform and a waterproof cover;

The signal transmission control component is installed on the upper surface of the support platform, one of the two temperature sensing ends of the temperature measuring device is installed on the lower surface, and the center position of the lower surface of the support platform is connected to one end of the connecting rod. vertical fixed connection;

The fireproof board is installed on the lower surface of the supporting platform in a manner of covering the temperature sensing end installed on the lower surface of the supporting platform;

The waterproof partition is installed on the lower surface of the support platform in a way of covering the fireproof board;

the waterproof cover is covered above the support platform;

The support base includes: a base and a base height adjustment knob;

Wherein, the base is connected with the other end of the connecting rod through the base height adjustment knob;

The base height adjustment knob is used to adjust the height of the support platform.

Optionally, the protective top cover is a conical top cover, an umbrella top cover or a cylindrical top cover.

Optionally, the support base is an unsupported base, a bracket type support base or a tumbler type hemisphere support base.

Optionally, the system further includes: a gain component electrically connected with the pyroelectric temperature sensor and the signal transmission control component;

The gain component includes: at least one of a gas sensor, a fire fighting component, a display component, a remote control component, and an external power supply; wherein:

the external power supply is used to supply power to the closed-circuit circuit formed inside the gain component;

The gas sensor is used to monitor the content of the preset gas in the environment; the fire fighting component is used to perform the fire fighting task determined by the target fire fighting scheme, wherein the target fire fighting scheme is: The fire protection plan corresponding to the fire control signal;

The display component is used for displaying the temperature sensed by at least one temperature sensing end of the two temperature sensing ends;

The remote control unit is used to remotely control the signal transmission control unit.

The fire early warning system provided by the embodiment of the present invention uses a thermoelectric temperature sensor using a thermoelectric material as a temperature measuring device. When the temperature measuring device in the pyroelectric temperature sensor detects that the ambient temperature changes, the thermoelectric material generates current, and the thermoelectric temperature sensor acts as a The power supply of the fire warning system, which supplies power to the closed circuit in the system. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram of the system structure of a fire early warning system provided by an embodiment of the present invention;

2 is a schematic diagram of a current-voltage curve of the thermoelectric temperature sensor 110 in the fire early warning system provided by the embodiment of the present invention under temperature differences of 8 degrees Celsius, 17 degrees Celsius, and 19 degrees Celsius;

3 is a schematic structural diagram of another fire early warning system provided by an embodiment of the present invention;

4 is a schematic structural diagram of another fire early warning system provided by an embodiment of the present invention;

Fig. 5 is the structural representation of cylindrical top cover;

Fig. 6 is the structural representation of conical top cover;

Fig. 7 is the structural representation of umbrella type top cover;

8 is a schematic structural diagram of a bracket-type support base;

9 is a schematic structural diagram of an unsupported base;

Figure 10 is a schematic structural diagram of a tumbler type hemisphere support base;

FIG. 11 is a structural diagram of another fire early warning system provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to solve the problems that most of the sensor-based fire warning systems in the prior art use an external power supply, the system structure is complex, the temperature tolerance range is small, the stability is poor, the sensitivity is low, and cannot be applied to complex environments, the embodiment of the present invention proposes a fire Early warning system, the system uses a thermoelectric temperature sensor with a thermoelectric material as the temperature measuring device as the power supply in the system, so no external power supply is required. In addition, the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability. The fire early warning system can give early warning of fire in complex environment.

The fire early warning system provided by the embodiments of the present invention will be generally described below.

In an implementation manner, the above-mentioned fire early warning system includes:

A thermoelectric temperature sensor and a signal transmission control component using a thermoelectric material as a temperature measuring device; wherein:

The temperature measuring device is used to sense the temperature of the scene to be monitored; it has two temperature sensing ends, of which one end uses a P-type thermoelectric material, the other end uses an N-type thermoelectric material, and the two temperature sensing ends use the thermoelectric material. The rate of change of thermoelectric characteristic value with temperature change is different;

The thermoelectric temperature sensor and the signal transmission control part are electrically connected to form a closed circuit;

The pyroelectric temperature sensor is used to generate a current to supply power to the circuit when there is a difference in the pyroelectric characteristic values of the two temperature sensing ends of the temperature measuring device;

The signal transmission control part is used for judging whether the current generated by the thermoelectric temperature sensor reaches a preset current critical value; if it reaches the current critical value, a target fire alarm signal is generated and used to indicate the signal transmission control Target positioning signal at the location of the component, broadcast the target fire alarm signal and target positioning signal

The fire early warning system provided by the embodiment of the present invention uses a thermoelectric temperature sensor that uses a thermoelectric material as a temperature measuring device. When the temperature measuring device in the thermoelectric temperature sensor detects that the ambient temperature changes, the thermoelectric material generates current, and the thermoelectric temperature sensor As the power source of the fire warning system, it supplies power to the closed circuit in the system. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments.

The fire early warning system provided by the embodiments of the present invention will be described in detail below through specific embodiments.

As shown in FIG. 1 , it is a schematic diagram of the system structure of a fire early warning system provided by an embodiment of the present invention. The system includes a thermoelectric temperature sensor 110 and a signal transmission control component 120 using a thermoelectric material as the temperature measuring device 111 .

The temperature measuring device 111 is used to sense the temperature of the scene to be monitored; it has two temperature sensing ends: a first temperature sensing end 111(a) and a second temperature sensing end 111(b), one end of which is made of P-type thermoelectric material, and the other is made of P-type thermoelectric material. One end uses an N-type thermoelectric material, and the thermoelectric properties of the thermoelectric materials used at the two temperature sensing ends have different rates of change with temperature changes. Specifically, the thermoelectric material can be a metal or a high-temperature non-metallic material, such as Bi ₂ Te ₃ , cubic MgAgAs type Half-Heusler compound, CoSb ₃ type skutterudite, Na-Co-O series and Ca-Co-O series metal oxides These materials have strong adaptability to complex and harsh environments, so the fire early warning system provided by this scheme can be applied to more complex environments.

Since the rate of change of the thermoelectric characteristic value of the thermoelectric material used by the first temperature sensing end 111(a) and the second temperature sensing end 111(b) varies with temperature, if a fire occurs in the scene to be monitored, the temperature rises , then the first temperature sensing terminal 111(a) and the second temperature sensing terminal 111(b) sense the change in temperature, which will cause the thermoelectric characteristic values of the two sensing terminals to change, and the difference between the thermoelectric characteristic values will become larger. , forming a potential field, under the action of the potential field, the carriers drift from one end of the P-type material to one end of the N-type material, thereby forming a current in a closed circuit. Among them, in physics, the carrier refers to the free-moving charged particles of matter, such as electrons and ions. Specifically, the above-mentioned scene to be monitored may be a forest or a home scene, or may be other places where fire warning is required, which is not limited in this embodiment of the present invention.

In an implementation manner, a plurality of thermoelectric temperature sensors can be connected in series, thereby increasing the electric power provided for the closed circuit, and at the same time, the failure of the fire early warning system due to the damage of a single thermoelectric temperature sensor can be avoided.

In an implementation manner, one end of the first temperature sensing end 111(a) and the second temperature sensing end 111(b) is used to sense the temperature of a preset object that can maintain a constant temperature or a low temperature in the scene to be monitored, and The other end is placed in a ventilated and ventilated environment to directly sense the temperature of the scene to be monitored. For ease of description, in the embodiment of the present invention, it is assumed that the first temperature sensing end 111(a) is in contact with a preset object, and the second temperature sensing end 111(b) directly senses the temperature of the scene to be monitored.

In this implementation, if a fire occurs in the scene to be monitored and the temperature rises, the second temperature sensing end 111(b) senses the temperature change, and the thermoelectric characteristic value changes accordingly, while the first temperature sensing end 111(a) Since the temperature of the preset object is sensed, the sensed temperature change is not as strong as that of the second temperature sensing end 111(b), so that the thermoelectric characteristic value of the first temperature sensing end 111(a) does not change much, which increases the The difference between the thermoelectric characteristic values between the two temperature sensing senses is increased, thereby making the temperature measuring device 111 in the fire warning system provided by this solution more sensitive.

Specifically, the above-mentioned preset objects may be natural forest objects such as water sources, soil, and plant deposits, or artificial thermostatic materials such as artificial foams, cement pouring materials, and aerogels. The method of sensing the temperature of the first temperature sensing end 111(a) may be contacting with the preset object, or inserting into the preset object, or wrapping the preset object, and so on. In this case, the first temperature sensing end 111(a) can be in contact with water source, soil, natural forest objects such as plant deposits, artificial foam, cement pouring material, aerogel and other artificial constant temperature materials, so as to obtain a low temperature or constant temperature environment temperature.

For example, the electrical characteristics of the thermoelectric temperature sensor 110 when the first temperature sensing end 111(a) is in contact with different preset objects are shown in the following table:

water

soil

Artificial foam

Dirt (when two thermoelectric temperature sensors are connected in series)

Foam (when two thermoelectric temperature sensors are connected in series)

In the above implementation manner, the first temperature sensing end 111(a) of the thermoelectric temperature sensor 110 can be set as a contact plate, since the first temperature sensing end 111(a) is used to sense the temperature of the preset object, and the preset Compared with the temperature of the scene to be monitored, the temperature of the object is usually a low temperature or a constant temperature, so the contact plate can also be a cold end contact plate.

In the above implementation manner, the second temperature sensing terminal 111(b) may be set as a contactor. Since the second temperature sensing terminal 111(b) senses the temperature of the scene to be monitored, when a fire occurs, the The temperature will rise, therefore, the temperature sensed by the second temperature sensing end 111(b) is higher than that of the first temperature sensing end 111(a), and the contactor can be called a hot end contactor.

Of course, in the above implementation manner, the first temperature sensing end 111(a) and the second temperature sensing end 111(b) can also be provided with other types of devices, as long as the first temperature sensing end 111(a) and the second temperature sensing end 111(b) can be set The temperature sensing end 111(b) may sense the temperature of the low temperature or constant temperature environment and the real temperature of the scene to be monitored as truly as possible, which is not limited in the present invention.

In this system, the thermoelectric temperature sensor 110 and the signal transmission control part 120 are electrically connected to form a closed circuit.

The thermoelectric temperature sensor 110 is used for generating current to supply power to the closed circuit when there is a difference between the thermoelectric characteristic values of the first temperature sensing end 111(a) and the second temperature sensing end 111(b).

As shown in FIG. 2, it is a schematic diagram of the current-voltage curve of the thermoelectric temperature sensor 110 in the fire early warning system provided by the embodiment of the present invention under the temperature difference of 8 degrees Celsius, 17 degrees Celsius, and 19 degrees Celsius. It can be seen that the larger the temperature difference, the higher the temperature. , the larger the current that the pyroelectric temperature sensor 110 can generate.

The signal transmission control part 120 is used for judging whether the current generated by the thermoelectric temperature sensor 110 reaches a preset current critical value; if it reaches the current critical value, a target fire alarm signal and a signal for indicating the location of the signal transmission control part are generated. Target positioning signal, and broadcast target fire alarm signal and target positioning signal.

In the embodiment of the present invention, since the thermoelectric materials used by the first temperature sensing end 111(a) and the second temperature sensing end 111(b) are different, and the thermoelectric characteristic values of different thermoelectric materials may also be different, therefore, initially By increasing the resistance, etc., it is possible to balance the current generated by the difference in the thermoelectric characteristic values of the first temperature sensing terminal 111(a) and the second temperature sensing terminal 111(b) at the same temperature, so that the normal temperature variation range is achieved. The current generated between the two temperature sensing terminals will not cause an alarm.

It can be seen from the above that the fire early warning system provided by the embodiment of the present invention uses the thermoelectric temperature sensor 110 using the thermoelectric material as the temperature measuring device 111. The thermoelectric material generates electric current, and the thermoelectric temperature sensor acts as the power source of the fire early warning system to supply power to the closed circuit in the system. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments.

In another embodiment of the present invention, the signal transmission control component is further configured to receive the fire alarm signal and the positioning signal broadcast by the signal transmission control component in other fire early warning systems, and to select the fire alarm signal from the preset fire early warning scheme with all the fire alarm signals. A fire warning scheme that matches the received fire alarm signal and the positioning signal.

For example, if the fire warning system detects a forest fire within the preset fire warning range, it will generate a fire alarm signal and a positioning signal, and broadcast the generated fire alarm signal and positioning signal; if it is within the preset warning range When no forest fire is detected, but the warning signal broadcast by other fire warning systems is received, the system will store the received fire warning signal and positioning signal, and broadcast the received fire warning signal and positioning signal; When the system receives the fire control signal, it will start the corresponding fire protection plan.

As shown in FIG. 3 , which is a schematic structural diagram of another fire early warning system provided by an embodiment of the present invention, compared with the structural schematic diagram of the fire early warning system shown in FIG. 1 , the signal transmission control component 320 in the system includes: a signal Comparator 321 , signal recorder 322 , signal locator 323 , signal amplifier 324 and wireless signal transmitter 325 .

Specifically, the signal comparator 321 is used to compare the current generated by the thermoelectric temperature sensor 310 with the current threshold value, and when the current generated by the thermoelectric temperature sensor 310 is greater than or equal to the current threshold value, a target fire alarm signal is generated, and the target fire alarm signal Sent to signal recorder 322 and signal amplifier 324 .

The signal recorder 322 is used for receiving and storing the target fire alarm signal generated by the signal comparator 321, and triggering the signal locator 323 to generate a target positioning signal for indicating its own location.

The signal locator 323 is used for generating the target positioning signal and sending the target positioning signal to the signal amplifier 324 .

The signal amplifier 324 is used to receive the target fire alarm signal and the target positioning signal, and amplify the target fire alarm signal and the target positioning signal.

The wireless signal transmitter 325 is used to broadcast target fire alarm signals and target location signals.

It can be seen from the above that, through the fire early warning system provided by the embodiment of the present invention, through the signal comparator 321, the signal recorder 322, the signal locator 323, the signal amplifier 324 and the wireless signal transmitter 325 in the signal transmission control unit 320, the broadcast target Fire alarm signal and target positioning signal. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments.

As shown in FIG. 4 , which is a schematic structural diagram of another fire early warning system provided by an embodiment of the present invention, compared with the structural schematic diagram of the fire early warning system shown in FIG. 3 , the signal transmission control component 420 in the system further includes: a signal Receiver 426 and Signal Controller 427.

Specifically, the signal receiver 426 is used for receiving fire alarm signals and positioning signals broadcast by signal transmission control components in other fire early warning systems.

The signal controller 427 is used to determine that the received signal includes a fire alarm signal, and when the distance between the fire occurrence place represented by the received positioning signal and the position of the signal controller is outside the preset range, the signal controller 427 will receive the fire alarm signal. The received fire alarm signal and locating signal are sent to the signal recorder 422 .

The signal recorder 422 is also used for receiving and storing the fire alarm signal and positioning signal sent by the signal controller 427 , and sending the received fire alarm signal and positioning signal to the signal amplifier 424 .

The signal amplifier 424 is also used for receiving the fire alarm signal and the positioning signal sent by the signal recorder 422 , amplifying the received signal, and sending the amplified signal to the wireless signal transmitter 425 .

The wireless signal transmitter 425 broadcasts the received signal.

It can be seen from the above that through the fire early warning system provided by the embodiment of the present invention, through the signal recorder 422, the signal amplifier 424, the wireless signal transmitter 425, the signal receiver 426 and the signal controller 427 in the signal transmission control part 420, other signals are received. The fire alarm system broadcasts, analyzes the received fire alarm signals, and re-broadcasts the fire alarm signals that meet the conditions. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments.

In another implementation manner, the fire early warning system shown in FIG. 4 can also receive a fire control signal broadcast by the fire terminal control system, and start a corresponding fire protection scheme.

Specifically, the signal receiver 426 receives the fire control signal broadcast by the fire terminal control system, and sends the fire control signal to the signal controller 427. The signal controller 427 determines whether the received signal is a fire control signal, and if so, Then start the fire protection scheme corresponding to the fire control signal.

Among them, the fire terminal control system can receive the fire alarm signal and positioning signal sent by each fire early warning system, and broadcast each fire early warning system, so as to control each fire early warning system. Specifically, the fire-fighting terminal control system can determine the fire-fighting plan that needs to be activated according to the received signals and pre-set conditions, and can also report the location and scope of the fire to firefighters, which corresponds to the fire-fighting control signal. The fire-fighting solution can be to start the fire-fighting device to put out the fire, or to send an alarm to remind personnel to evacuate, etc., which is not limited in the embodiment of the present invention.

It can be seen from the above that the fire early warning system provided by the embodiment of the present invention can receive the fire control signal broadcast by the fire terminal control system, and start the corresponding fire protection plan, so that the function of the fire early warning system is more perfect, and the early warning of the fire is more accurate. timely.

In another implementation manner, the fire early warning system provided by the embodiment of the present invention further includes a protective top cover, a support base and a connecting rod.

Among them, the protective top cover can be a conical top cover, an umbrella top cover or a cylindrical top cover, and of course other types of protective top covers, which can be monitored according to the use of the fire warning system, the installation method, and the monitoring of the complex environment. The type and fire protection needs are selected, which is not limited in the present invention.

Figure 5 shows a schematic structural diagram of a cylindrical top cover, which can be applied to a fire warning system with a complex structure.

The protective top cover 530 includes: a waterproof partition 531 with ventilation holes, a fireproof board 532 with ventilation holes, a support platform 533 and a waterproof cover 534 .

Specifically, a signal transmission control component 520 is installed on the upper surface of the support platform 533, and one of the two temperature sensing ends 511 of the temperature measuring device is installed on the lower surface. The center of the lower surface of the support platform 533 is connected to the connecting rod. One end of 550 is fixed vertically. The fireproof plate 532 is installed on the lower surface of the supporting platform 533 in a manner of covering the temperature sensing end 511 installed on the lower surface of the supporting platform. The waterproof partition 531 is installed on the lower surface of the support platform 533 in a manner of covering the fireproof plate 532 . The waterproof cover 534 covers the upper part of the support platform 533 .

Figure 6 is a schematic diagram of the structure of the conical top cover. The conical top cover can be used in a fire early warning system with a simple structure, and it is helpful for signal enhancement; The type top cover is suitable for the fire early warning system using the high-altitude release method, which can increase the air resistance during high-altitude landing and reduce the damage to the equipment. The installation manner and structure of the devices of the systems shown in FIG. 6 and FIG. 7 are the same as those of the system structure diagram shown in FIG. 5 , and details are not repeated in this embodiment of the present invention.

The support base can be an unsupported base, a bracket type support base or a tumbler type hemispherical support base, of course, it can also be other types of protective top covers, which can be selected according to the use of the fire early warning system and the installation method. Do limit.

As shown in Figure 8, it is a schematic diagram of the structure of the bracket-type support base. The bracket-type support base can be used in environments such as the support of temperature measurement platforms at high places to avoid damage to the fire early warning system caused by animals at low places.

The support base 840 includes a base 841 and a base height adjustment knob 842 . The base 841 is connected to the other end of the connecting rod 850 through the base height adjustment knob 842 . The base height adjustment knob 842 can be used to adjust the height of the support platform 840 .

As shown in Figure 9, it is a schematic diagram of the structure of the unsupported base. The unsupported base can be used for the fire warning system to be directly inserted into the forest natural objects such as water sources, soil, and plant sediments. The structure is simple and the operation is simple; as shown in Figure 10, it is a tumbler. The structure diagram of the tumbler type hemisphere support base, the tumbler type hemisphere support base can be used for the high-altitude throwing needs of a small fire warning system, and the center of gravity of the base is increased to ensure that the thermoelectric temperature sensor in the system can accurately test the actual temperature of the scene to be monitored. The installation manner and structure of the devices of the systems shown in FIG. 9 and FIG. 10 are the same as the system structure diagram shown in FIG. 8 , and details are not repeated in this embodiment of the present invention.

As can be seen from the above, the fire early warning system provided by the embodiments of the present invention can adapt to different environments and application scenarios through different protective top covers, support bases and connecting rods, making the fire early warning system more adaptable to complex environments.

In another implementation manner, the fire early warning system provided by the embodiment of the present invention further includes: a gain component electrically connected with the thermoelectric temperature sensor and the signal transmission control component.

The gain component can be at least one of a gas sensor, a fire fighting component, a display component and a remote control component and an external power supply, and of course other components. The function of the gain component is to make the fire early warning system through the combination of different accessories. It can be applied to more complex environmental monitoring needs, and can undertake a certain degree of firefighting tasks when it is connected with regional firefighting facilities. As long as the components that can achieve the above purpose can be used as gain components of the fire early warning system, the present invention does not apply to this. Do limit.

Among them, the external power supply is used to supply power to the closed circuit formed inside the gain part. Since the current generated by the thermoelectric temperature sensor is limited, it is not enough to supply components that require higher power. Therefore, if the fire early warning system provided by this solution adds components with other functions, an external power supply needs to be installed to supply these components. Components are powered.

The gas sensor is used to monitor the content of the preset gas in the environment. The fire-fighting component is used to perform the fire-fighting task determined by the target fire-fighting scheme, wherein the target fire-fighting scheme is the fire-fighting scheme corresponding to the fire-fighting control signal broadcast by the fire-fighting terminal control system. The display part is used for displaying information such as temperature sensed by at least one temperature sensing end of the two temperature sensing ends. The remote control part is used to remotely control the signal transmission control part.

It can be seen from the above that the fire early warning system provided by the embodiment of the present invention, by configuring the gain components, can take corresponding fire fighting measures according to the received signals, or make the fire early warning system more intelligent and the information display more clear, so that the fire early warning system can Better functionality for complex environments.

In another embodiment of the present invention, a structural diagram of a fire early warning system is shown in FIG. 11 .

The fire early warning system includes: support base 1, cold end contact plate of temperature sensor 2, temperature sensor P-type thermoelectric material 3, temperature sensor N-type thermoelectric material 4, base adjustment knob 5, connecting rod 6, temperature sensor-gain component Connection wire 7, temperature sensor-signal transmission control part connection wire 8, protective top cover 9, ventilation hole 10, waterproof partition 11, fireproof board 12, temperature sensor hot end contactor 13, support platform 14, gain component 15, display Part 16, fire protection part 17, remote control part 18, gas sensor 19, external power supply 20, waterproof cover 21, signal transmission control part 22, signal receiver 23, wireless signal transmitter 24, signal controller 25, signal amplifier 26, Signal locator 27 , signal recorder 28 , signal comparator 29 .

The functions of each component are the same as those in the above-mentioned embodiments, and will not be repeated here.

It can be seen from the above that the fire early warning system provided by the embodiment of the present invention uses a thermoelectric temperature sensor using a thermoelectric material as a temperature measuring device. When the temperature measuring device in the thermoelectric temperature sensor detects that the ambient temperature changes, the thermoelectric material generates a current. , The thermoelectric temperature sensor is used as the power supply of the fire early warning system to supply power to the closed circuit circuit in the system. Because the thermoelectric temperature sensor has a wide temperature range, high measurement accuracy and high stability, the fire warning system can give early warning of fire in complex environments. It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Each embodiment in this specification is described in a related manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (7)

1. A fire early warning system, comprising: a thermoelectric temperature sensor and a signal transmission control component which take thermoelectric materials as temperature measuring devices; wherein:

the temperature measuring device is provided with two temperature sensing ends, wherein one end of the temperature sensing device is made of a P-type thermoelectric material, the other end of the temperature sensing device is made of an N-type thermoelectric material, and the thermoelectric property values of the thermoelectric materials adopted by the two temperature sensing ends are different in change rate along with the temperature change;

one end of the two temperature sensing ends of the temperature measuring device is inserted into a preset object which is maintained at a constant temperature or a low temperature in a scene to be monitored and is used for sensing the temperature of the preset object, and the other end of the temperature measuring device is used for sensing the temperature of the scene to be monitored;

the thermoelectric temperature sensor and the signal transmission control part are electrically connected to form a closed circuit;

the thermoelectric temperature sensor is used for generating current to supply power to the circuit when the thermoelectric characteristic values of the two temperature sensing ends of the temperature measuring device have a difference value;

the signal transmission control part is used for judging whether the current generated by the thermoelectric temperature sensor reaches a preset current critical value; if the current critical value is reached, generating a target fire alarm signal and a target positioning signal for indicating the position of the signal transmission control component, and broadcasting the target fire alarm signal and the target positioning signal;

the signal transmission control part includes: the system comprises a signal comparator, a signal recorder, a signal positioner, a signal amplifier, a wireless signal transmitter, a signal receiver and a signal controller;

wherein:

the signal comparator is used for comparing the current generated by the thermoelectric temperature sensor with the current critical value, generating the target fire alarm signal when the current generated by the thermoelectric temperature sensor is greater than or equal to the current critical value, and sending the target fire alarm signal to the signal recorder and the signal amplifier;

the signal recorder is used for receiving and storing the target fire alarm signal generated by the signal comparator and triggering the signal positioner to generate a target positioning signal for indicating the position of the signal positioner;

the signal positioner is used for generating the target positioning signal and sending the target positioning signal to the signal amplifier;

the signal amplifier is used for receiving the target fire alarm signal and the target positioning signal and amplifying the target fire alarm signal and the target positioning signal;

the wireless signal transmitter is used for broadcasting the target fire alarm signal and the target positioning signal;

the signal receiver is used for receiving fire alarm signals and positioning signals broadcast by signal transmission control components in other fire early warning systems;

the signal controller is used for sending the received fire alarm signal and the positioning signal to the signal recorder when the received signal is determined to contain the fire alarm signal and the distance between the fire place represented by the received positioning signal and the position of the signal controller is beyond a preset range;

the signal recorder is also used for receiving and storing the fire alarm signal and the positioning signal sent by the signal controller and sending the received fire alarm signal and the positioning signal to the signal amplifier;

the signal amplifier is also used for receiving the fire alarm signal and the positioning signal sent by the signal recorder and amplifying the received signals.

2. The system of claim 1, wherein:

the signal transmission control component is also used for receiving fire alarm signals and positioning signals broadcast by the signal transmission control components in other fire early warning systems, and selecting a fire early warning scheme matched with the received fire alarm signals and positioning signals from preset fire early warning schemes.

3. The system of claim 1, wherein:

the signal receiver is also used for receiving a fire control signal broadcasted by a fire control terminal control system and sending the fire control signal to the signal controller;

the signal controller is also used for judging whether the received signal is a fire control signal, and if so, starting a fire control scheme corresponding to the fire control signal.

4. The system of claim 1, further comprising: the protective top cover, the supporting base and the connecting rod;

wherein, the protection overhead guard includes: the waterproof structure comprises a waterproof partition plate with a vent hole, a fireproof plate with a vent hole, a supporting platform and a waterproof cover;

the upper surface of the supporting platform is provided with the signal transmission control component, the lower surface of the supporting platform is provided with one of two temperature sensing ends of the temperature measuring device, and the central position of the lower surface of the supporting platform is vertically and fixedly connected with one end of the connecting rod;

the fireproof plate is arranged on the lower surface of the supporting platform in a mode of covering the temperature sensing end arranged on the lower surface of the supporting platform;

the waterproof clapboard is arranged on the lower surface of the supporting platform in a mode of covering the fireproof plate;

the waterproof cover covers the upper part of the supporting platform;

the support base includes: a base and a base height adjustment knob;

the base is connected with the other end of the connecting rod through the base height adjusting knob;

and the base height adjusting knob is used for adjusting the height of the supporting platform.

5. The system of claim 4, wherein:

the protective top cover is as follows: a conical top cover, an umbrella-shaped top cover or a cylindrical top cover.

6. The system of claim 4, wherein:

the supporting base is as follows: a non-support base, a support type support base or a tumbler type hemisphere support base.

7. The system according to any one of claims 1-6, further comprising: a gain component electrically connected to the thermoelectric temperature sensor and the signal transmission control component;

the gain section includes: at least one of a gas sensor, a fire-fighting component, a display component and a remote control component, and an external power supply; wherein:

the external power supply is used for supplying power to a closed circuit formed inside the gain part;

the gas sensor is used for monitoring the content of a preset gas in the environment; the fire fighting component is used for executing a fire fighting task determined by a target fire fighting scheme, wherein the target fire fighting scheme is as follows: a fire-fighting scheme corresponding to a fire-fighting control signal broadcast by the fire-fighting terminal control system;

the display component is used for displaying the temperature sensed by at least one temperature sensing end in the two temperature sensing ends;

the remote control component is used for remotely controlling the signal transmission control component.

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