CN219958330U - Smoke alarm with obstacle detection function - Google Patents

Abstract

The utility model relates to a smoke alarm with an obstacle detection function, and relates to the technical field of security smoke alarms, comprising a shell, a mounting backboard for mounting the shell at a set position, and a circuit board arranged in the shell, wherein the circuit board is provided with a smoke detection circuit, an obstacle detection circuit and a controller, the obstacle detection circuit comprises obstacle detection pieces for detecting obstacles around the smoke alarm and an alarm prompt piece for sending an alarm prompt signal, the obstacle detection pieces are in signal connection with the controller, the controller is in control connection with the alarm prompt piece, the obstacle detection pieces output a shielding signal to a signal receiving end of the controller, and the controller responds to the working state of the shielding signal to control the alarm prompt piece, so that an operator can conveniently mount the smoke alarm at a proper position, and the alarm accuracy of the smoke alarm is improved.

Description

Smoke alarm with obstacle detection function

Technical Field

The utility model relates to the technical field of security smoke alarms, in particular to a smoke alarm with an obstacle detection function.

Background

The smoke alarm is a safety device for detecting and alarming the existence of smoke, and has the main functions of providing early smoke detection and warning so as to take appropriate measures in time to protect the life and property of people.

In order for a smoke alarm to be able to detect a fire in time, the smoke alarm needs to be installed correctly, which is critical to ensure its effectiveness, accuracy and reliability. The installation environment of the smoke alarm cannot be too narrow, furniture, electrical appliances and the like cannot be arranged around the smoke alarm, and the air flow around the smoke alarm needs to be ensured to be smooth. However, the existing installation method is that an installer judges according to experience, errors and misjudgment are easy to occur, and the effectiveness, accuracy and reliability of the smoke alarm are affected.

Disclosure of Invention

In order to facilitate accurate smoke alarms and ensure the accuracy of the smoke alarms, the utility model provides the smoke alarms with the obstacle detection function.

The utility model provides a smoke alarm with an obstacle detection function, which adopts the following technical scheme:

the smoke alarm with the obstacle detection function comprises a shell, a mounting backboard for mounting the shell at a set position, and a circuit board arranged in the shell, wherein a smoke detection circuit, an obstacle detection circuit and a controller are arranged on the circuit board;

the obstacle detection circuit comprises an obstacle detection part for detecting obstacles around the smoke alarm and an alarm prompt part for sending alarm prompt signals, wherein the obstacle detection part is in signal connection with a controller, the controller is in control connection with the alarm prompt part, the obstacle detection part outputs shielding signals to a signal receiving end of the controller, and the controller responds to the shielding signals to control the working state of the alarm prompt part.

Through adopting above-mentioned technical scheme, when the installation smoke alarm, when the barrier detects that there is the barrier in periphery to influence the air current, can export the signal of sheltering from to the controller, controller control warning suggestion spare begins work, send audible and visual etc. signal suggestion operating personnel around have shelter from, need adjust the position that smoke alarm installed, until the warning suggestion spare when not prompting, the explanation is around not sheltering from, the position is suitable this moment, make things convenient for operating personnel to install smoke alarm in suitable position, be favorable to improving smoke alarm's alarm accuracy.

Optionally, the obstacle detecting member is configured as a MEMS proximity sensor and is located on a face of the housing facing away from the mounting backplate.

Through adopting above-mentioned technical scheme, MEMS proximity sensor is small, detects sensitively, and detection range is big, is applicable to such small-size equipment of smoke transducer, and MEMS proximity sensor's principle is for adopting the ultrasonic wave to survey simultaneously, does not receive the restriction of detected object colour, surface roughness, can detect the barrier around the smoke alarm more sensitively.

Optionally, the shell comprises an upper cover and a lower cover, the upper cover is detachably connected with a mounting backboard, and a connecting structure for fixing the smoke alarm is arranged on the mounting backboard;

and a smoke vent is formed in the side wall of the lower cover, and the obstacle detection part is arranged on the surface, deviating from the mounting backboard, of the lower cover.

Through adopting above-mentioned technical scheme, the upper cover is connected with the installation backplate, installs the smoke alarm on the ceiling, and the obstacle detection spare sets up in the below and can detect smoke alarm below, and whether there is the obstacle that influences the air current in the hemispherical within range region.

Optionally, still be provided with the filter screen that is used for preventing debris entering smoke alarm inside in the casing, be provided with the maze that is used for providing smoke detection environment on the face of circuit board towards the upper cover.

Through adopting above-mentioned technical scheme, the filter screen can prevent debris such as mosquito get into inside the smoke alarm, avoids influencing smoke alarm normal operating, and the effect of maze is that a detection environment of photoelectric element is provided, and this environment can not be along with outside ambient light change, also has the effect of certain keeping smog concentration.

Optionally, the alarm prompting piece comprises an indicator lamp and a buzzer, the obstacle detection circuit further comprises a sound driving circuit connected between the buzzer and the controller and a light indicating circuit connected between the indicator lamp and the controller, and the sound driving circuit receives an alarm driving signal output by the controller and drives the buzzer to buzze for alarm prompting; the light indication circuit receives an alarm driving signal output by the controller and drives the indicator light to emit light for alarm prompt.

Through adopting above-mentioned technical scheme, pilot lamp and bee calling organ can send audible and visual cue signal based on the testing result of barrier detection spare, and the suggestion installs smoke alarm's operating personnel, and the mounted position has problem to need adjust, until the mounted position is accurate.

Optionally, the buzzer and the pilot lamp are installed and set up on the circuit board, still be provided with alarm sound export and alarm light export on the face that the lower cover deviates from the installation backplate, alarm sound export and alarm light export are corresponding with the position of buzzer and pilot lamp.

Through adopting above-mentioned technical scheme, alarm sound export and alarm light export on the casing are corresponding with the position of bee calling organ and pilot lamp, conveniently transmit buzzing alarm sound, also make things convenient for operating personnel to see suggestion light.

Optionally, the circuit board is further provided with a mounting backboard detection circuit for detecting the connection relation between the upper cover and the mounting backboard, the mounting backboard detection circuit is in signal connection with the controller and outputs a connection signal to the controller, and the controller responds to the connection signal to control the working state of the alarm prompt piece.

Through adopting above-mentioned technical scheme, installation backplate detection circuitry can detect the relation of connection between upper cover and the installation backplate, when being connected between the two unstable, control warning suggestion piece sends audible and visual suggestion, reminds operating personnel to inspect the junction, reduces the probability that smoke alarm dropped for smoke alarm installs more firmly.

Optionally, a key detection circuit is further arranged on the circuit board, and the key detection circuit is connected with a control signal to control the working state of the alarm prompting piece.

Through adopting above-mentioned technical scheme, when the buzzer is because smoke alarm test, installation and debugging time continuously send the suggestion sound, can temporarily close buzzer and pilot lamp through button test circuit, avoid disturbing the installation test.

Optionally, the circuit board is further provided with a communication circuit, the communication circuit includes a radio frequency communication circuit wirelessly connected with the remote terminal and an infrared communication circuit for receiving and transmitting data, and the lower cover is provided with an infrared communication interface.

By adopting the technical scheme, the radio frequency communication circuit can transmit the alarm signal to a remote terminal in a wireless mode through the radio frequency antenna, such as a security room computer, a mobile phone terminal of security personnel and the like, and can process the alarm in time under the condition that no person is in a place where the smoke alarm is arranged; the infrared communication circuit uses infrared rays as a wireless transmission carrier to realize the receiving and transmitting of data and information, so that the controller can conveniently receive external control signals, and the whole smoke alarm is debugged and controlled.

Optionally, a battery and a power supply processing circuit are further arranged on the circuit board, the input end of the power supply processing circuit is electrically connected with the battery, and the output end of the power supply processing circuit is electrically connected with the smoke detection circuit, the obstacle detection circuit, the key detection circuit and the communication circuit to supply power to each circuit.

By adopting the technical scheme, the power supply processing circuit converts the voltage provided by the battery into the voltage required by each functional circuit, thereby playing a role in power supply.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when the smoke alarm is installed, when the obstacle detection part detects that the surrounding obstacle influences the air flow, a shielding signal is output to the controller, the controller controls the alarm prompting part to start working, signals such as sound and light are sent to prompt an operator that the surrounding of the operator is shielded, the installation position of the smoke alarm needs to be adjusted until the alarm prompting part is not in prompting, the surrounding is free from shielding, the position is proper, the operator can conveniently install the smoke alarm at a proper position, and the improvement of the alarm accuracy of the smoke alarm is facilitated;

2. the installation backplate detection circuitry can detect the relation of connection between upper cover and the installation backplate, when the connection between the two is unstable, control the warning suggestion piece and send audible and visual suggestion, reminds operating personnel to inspect the junction, reduces the probability that smoke alarm dropped for smoke alarm installs more firmly.

Drawings

FIG. 1 is a schematic illustration of the components of the smoke alarm of the present utility model;

FIG. 2 is an overall schematic of the smoke alarm of the present utility model;

FIG. 3 is a schematic view of another angle of the lower cover of the present utility model;

fig. 4 is a schematic diagram of the circuit connection relationship of the present utility model.

Reference numerals: 1. a housing; 11. an upper cover; 12. a lower cover; 121. a smoke vent; 122. an alarm sound outlet; 123. an alarm light outlet; 124. an infrared communication interface; 2. mounting a backboard; 3. a circuit board; 30. a maze; 31. mounting a backboard detection circuit; 32. a key detection circuit; 33. a radio frequency communication circuit; 34. an infrared communication circuit; 35. a battery; 36. a power supply processing circuit; 4. a smoke detection circuit; 5. an obstacle detection circuit; 51. an obstacle detecting member; 52. an alarm prompting piece; 6. a controller; 7. and (5) a filter screen.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The embodiment of the utility model discloses a smoke alarm with an obstacle detection function, which comprises a shell 1 and a mounting backboard 2 for mounting the shell 1 at a set position, wherein the conventional smoke alarm is generally mounted on a ceiling of a building, and when the conventional smoke alarm is mounted, the mounting backboard 2 is fixed on the ceiling, and then the shell 1 of the smoke alarm is connected with the mounting backboard 2.

The inside circuit board 3 that is provided with of casing 1, the installation is provided with smog detection circuitry 4, obstacle detection circuitry 5 and controller 6 (not shown in the figure) on the circuit board 3, and smog detection circuitry 4 is used for detecting whether smog concentration reaches the settlement threshold value, and obstacle detection circuitry 5 is used for detecting whether there is the obstacle near the smog alarm mounted position. The auxiliary installer installs the smoke alarm in a proper and accurate position, so that the alarm accuracy is improved.

In detail, as shown in fig. 1-2, the casing 1 is cylindrical and includes an upper cover 11 and a lower cover 12, the upper cover 11 is detachably connected with the mounting backboard 2 through bolts, and a connection structure for fixing the smoke alarm is provided on the mounting backboard 2, and in the embodiment of the utility model, the connection structure is configured as a bolt hole, so that the mounting backboard 2 is firmly connected to the ceiling. The lower cover 12 is cup-shaped, and the side wall of the lower cover 12 is provided with a smoke vent 121 along the circumferential direction.

In order to prevent the impurities such as mosquitoes from entering the smoke alarm and avoiding affecting the normal operation of the smoke alarm, as shown in fig. 1, a filter screen 7 is further arranged in the shell 1, a labyrinth 30 for providing a smoke detection environment is arranged on the surface of the circuit board 3 facing the upper cover 11, a detection environment is provided for the photoelectric element, the environment cannot change along with the light of the outside environment, and the labyrinth 30 also has the function of keeping the smoke concentration to a certain extent.

As shown in fig. 4, the obstacle detection circuit 5 includes an obstacle detection member 51 and an alarm prompting member 52, the obstacle detection member 51 is in signal connection with the controller 6, the controller 6 is in control connection with the alarm prompting member 52, the obstacle detection member 51 outputs a shielding signal to a signal receiving end of the controller 6, and the controller 6 responds to the shielding signal to control the working state of the alarm prompting member 52. In the process of installing the smoke alarm, when the obstacle detecting piece 51 detects that the periphery has obstacles, a shielding signal is output to the controller 6, the controller 6 controls the alarm prompting piece 52 to start working, signals such as sound and light are sent to prompt an operator to have shielding around, the installation position of the smoke alarm needs to be adjusted until the alarm prompting piece 52 is not in prompting, no shielding around is indicated at the moment, the position is proper, and the operator can conveniently install the smoke alarm at a proper position.

Wherein, as shown in fig. 3, the obstacle detecting member 51 is used for detecting obstacles around the smoke alarm, and in the embodiment of the utility model, the obstacle detecting member 51 is configured as a MEMS proximity sensor and is located at a center position of a face of the lower cover 12 facing away from the mounting backboard 2. The MEMS proximity sensor has small volume and sensitive detection, is suitable for small-sized equipment such as a smoke sensor, adopts ultrasonic waves to detect, is not limited by the color of an object to be detected and the roughness of the outer surface, can detect the obstacles around the smoke alarm more sensitively, is preferably arranged at the position right below the smoke alarm, has a large detection range, and can detect whether the obstacles influencing the airflow exist in the area within the hemispherical range.

As shown in fig. 2, when the object is outside the hemispherical area, the fire detection of the smoke alarm is not affected, and the alarm cannot be triggered. When an object enters the hemispherical area, the fire detection of the smoke alarm is influenced, and the smoke alarm can prompt a user that the current installation position is improper and measures need to be taken.

In the embodiment of the utility model, the alarm prompting member 52 is specifically configured as an indicator light and a buzzer, a sound driving circuit is further arranged between the buzzer and the controller 6, a light indicating circuit is further arranged between the indicator light and the controller 6, the sound driving circuit receives the alarm driving signal output by the controller 6 and drives the buzzer to send out buzzing to give out alarm prompts, and the light indicating circuit receives the alarm driving signal output by the controller 6 and drives the indicator light to send out light to give out alarm prompts. Specifically, the sound driving circuit and the light indicating circuit each include an amplifier, a switch circuit and a signal adjusting circuit, and receive a control signal of the controller 6 to control the sound intensity and frequency of the buzzer or control the brightness and flicker frequency of the indicating lamp.

The buzzer and the indicator lamp are arranged on the circuit board 3, correspondingly, as shown in fig. 3, the bottom surface of the lower cover 12 is provided with an alarm sound outlet 122 and an alarm light outlet 123, the alarm sound outlet 122 and the alarm light outlet 123 correspond to the buzzer and the indicator lamp in position, the buzzer alarm sound is conveniently transmitted, and the operator can conveniently see the prompt light.

As shown in fig. 4, the circuit board 3 is further provided with a mounting backboard detection circuit 31 for detecting a connection relationship between the upper cover 11 and the mounting backboard 2, the mounting backboard detection circuit 31 is in signal connection with the controller 6, outputs a connection signal to the controller 6, and the controller 6 controls the working state of the alarm prompt 52 in response to the connection signal. The specific implementation manner of the mounting back plate detection circuit 31 may be: the magnetic sensor is arranged on the upper cover 11, the magnet is arranged on the mounting backboard 2, and when the upper cover 11 is firmly connected with the mounting backboard 2, the magnetic sensor outputs a signal to the controller 6, so that the smoke alarm is mounted on the ceiling at the moment, and smoke detection can be started. When the connection between the upper cover 11 and the mounting backboard 2 is unstable, the controller 6 controls the alarm prompt piece 52 to send out audible and visual prompts based on the signals sent by the magnetic sensor, reminds an operator to check the connection position, reduces the falling probability of the smoke alarm, and enables the mounting of the smoke alarm to be more stable.

When the buzzer continuously sends out prompt sounds during the smoke alarm test and the installation and debugging, the installation test can be disturbed to a certain extent, so that the key detection circuit 32 is further arranged on the circuit board 3, the key detection circuit 32 is connected with a control signal, the working state of the alarm prompt piece 52 is controlled, and when an operator presses a key, the buzzer and the indicator lamp can be temporarily turned off.

The circuit board 3 is also provided with a communication circuit, the communication circuit comprises a radio frequency communication circuit 33 and an infrared communication circuit 34, the radio frequency communication circuit 33 can transmit alarm signals to a remote terminal in a wireless mode through a radio frequency antenna, such as a security room computer, a mobile phone terminal of security personnel and the like, and can also process an alarm in time under the condition that no person is in a place where the smoke alarm is arranged. The infrared communication circuit 34 uses infrared rays as a wireless transmission carrier to realize data and information transceiving, so that the controller 6 can conveniently receive external control signals, debug and control the whole smoke alarm, and the lower cover 12 is provided with an infrared communication interface 124, as shown in fig. 3, so that the infrared rays are conveniently received.

As shown in fig. 4, the circuit board 3 is further provided with a battery 35 and a power supply processing circuit 36, wherein an input end of the power supply processing circuit 36 is electrically connected with the battery 35, and an output end of the power supply processing circuit 36 is electrically connected with the smoke detection circuit 4, the obstacle detection circuit 5, the key detection circuit 32 and the communication circuit to supply power to each circuit.

In the embodiment of the present utility model, the controller 6 may be configured as a single-chip microcomputer, and relevant programs are loaded therein to control the working state of the alarm prompting element 52, and it should be noted that the protection of the present utility model is focused on the connection relationship between the circuits and the adaptive adjustment made on the smoke alarm housing 1, and the structure of the present utility model can implement different functions in cooperation with different programs.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. The smoke alarm with the obstacle detection function is characterized by comprising a shell (1), an installation backboard (2) used for installing the shell (1) at a set position, and a circuit board (3) arranged in the shell (1), wherein a smoke detection circuit (4), an obstacle detection circuit (5) and a controller (6) are arranged on the circuit board (3);

the obstacle detection circuit (5) comprises an obstacle detection part (51) for detecting obstacles around the smoke alarm and an alarm prompt part (52) for sending an alarm prompt signal, the obstacle detection part (51) is connected with the controller (6) in a signal mode, the controller (6) is connected with the alarm prompt part (52) in a control mode, the obstacle detection part (51) outputs a shielding signal to a signal receiving end of the controller (6), and the controller (6) responds to the shielding signal to control the working state of the alarm prompt part (52).

2. The smoke alarm with obstacle detection function according to claim 1, characterized in that the obstacle detection member (51) is configured as a MEMS proximity sensor and is located on a face of the housing (1) facing away from the mounting backplate (2).

3. The smoke alarm with obstacle detection function according to claim 2, wherein the housing (1) comprises an upper cover (11) and a lower cover (12), the upper cover (11) is detachably connected with a mounting backboard (2), and a connecting structure for fixing the smoke alarm is arranged on the mounting backboard (2);

the side wall of the lower cover (12) is provided with a smoke vent (121), and the obstacle detection piece (51) is arranged on the surface, deviating from the installation backboard (2), of the lower cover (12).

4. A smoke alarm with obstacle detection function according to claim 3, characterized in that a filter screen (7) for preventing impurities from entering the smoke alarm is further arranged in the housing (1), and a labyrinth (30) for providing a smoke detection environment is arranged on the surface of the circuit board (3) facing the upper cover (11).

5. The smoke alarm with obstacle detection function according to claim 4, wherein the alarm prompting piece (52) comprises an indicator lamp and a buzzer, the obstacle detection circuit (5) further comprises a sound driving circuit connected between the buzzer and the controller (6) and a light indicating circuit connected between the indicator lamp and the controller (6), the sound driving circuit receives an alarm driving signal output by the controller (6) and drives the buzzer to generate a buzzer to give an alarm prompt; the light indication circuit receives an alarm driving signal output by the controller (6) and drives the indicator light to emit light for alarm prompt.

6. The smoke alarm with obstacle detection function according to claim 5, wherein the buzzer and the indicator light are mounted on the circuit board (3), an alarm sound outlet (122) and an alarm light outlet (123) are further arranged on the surface of the lower cover (12) facing away from the mounting backboard (2), and the alarm sound outlet (122) and the alarm light outlet (123) correspond to the positions of the buzzer and the indicator light.

7. The smoke alarm with obstacle detection function according to claim 6, wherein a mounting backboard detection circuit (31) is further arranged on the circuit board (3) and is used for detecting the connection relation between the upper cover (11) and the mounting backboard (2), the mounting backboard detection circuit (31) is in signal connection with the controller (6) and outputs a connection signal to the controller (6), and the controller (6) responds to the connection signal to control the working state of the alarm prompting piece (52).

8. The smoke alarm with obstacle detection function according to claim 7, wherein a key detection circuit (32) is further arranged on the circuit board (3), and the key detection circuit (32) is connected with a control signal to control the working state of the alarm prompting piece (52).

9. The smoke alarm with obstacle detection function according to claim 8, wherein the circuit board (3) is further provided with a communication circuit, the communication circuit comprises a radio frequency communication circuit (33) wirelessly connected with a remote terminal and an infrared communication circuit (34) for receiving and transmitting data, and the lower cover (12) is provided with an infrared communication interface (124).

10. The smoke alarm with obstacle detection function according to claim 9, wherein a battery (35) and a power supply processing circuit (36) are further arranged on the circuit board (3), an input end of the power supply processing circuit (36) is electrically connected with the battery (35), and an output end of the power supply processing circuit is electrically connected with the smoke detection circuit (4), the obstacle detection circuit (5), the key detection circuit (32) and the communication circuit to supply power to each circuit.