CN215814397U

CN215814397U - Wireless sound-light alarm and wireless fire alarm system

Info

Publication number: CN215814397U
Application number: CN202120318477.XU
Authority: CN
Inventors: 张喜平; 丰晓湘
Original assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Current assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2022-02-11
Anticipated expiration: 2031-02-04

Abstract

The utility model provides a wireless sound-light alarm and a wireless fire alarm system, wherein the wireless sound-light alarm comprises a power supply conversion circuit, an alarm unit connected with the power supply conversion circuit, and a controller MCU connected with the power supply conversion circuit. Compared with the prior art, the wireless acousto-optic alarm overcomes the defects of the existing fire acousto-optic alarm under the condition of power supply of the power adapter and the battery, automatically monitors the standby state, automatically switches power supplies, and backups each other under the condition of power supply of the power adapter and the battery, so that the acousto-optic alarm has normal functions under special conditions such as fire and the like.

Description

Wireless sound-light alarm and wireless fire alarm system

Technical Field

The utility model relates to the field of fire alarm, in particular to a wireless acousto-optic alarm and a wireless fire alarm system.

Background

With the increasing public safety requirements, in public buildings, when a fire accident or a special condition occurs, an alarm signal device which sends out alarm signals to people through sound and various lights is often seen, and the device is called a fire acousto-optic alarm in the field of fire fighting. Aims to warn field personnel to escape when a fire disaster occurs. At present, most of fire acousto-optic alarms in the market are wired type, and the small part of fire acousto-optic alarms in the market are wireless type. The wireless fire acousto-optic alarm has the following defects in the current application:

1. the wireless type application is mainly more in 433MHz short distance application, self-built LoRa platform or NB platform enterprises mainly concentrate on partial mainstream fire-fighting manufacturers, reliability and maintainability are guaranteed, and follow-up expansion is very convenient.

2. According to research, manufacturers of current selling products supply power to a power adapter or a battery. On one hand, under the condition that the power adapter supplies power, under the special conditions of fire and the like, the power is cut off, and the acousto-optic alarm cannot be started, so that the function is lost. On the other hand, under the condition of battery power supply, the functions are normal during standby monitoring, and the functions are invalid or reduced after starting, so that the aim of fire hazard warning cannot be achieved.

Therefore, how to design a wireless sound and light alarm, which can switch power supply under special conditions such as fire, to avoid the problems of function loss or failure, is a technical problem to be solved in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wireless sound-light alarm and a wireless fire alarm system, aiming at the defects of the wireless sound-light alarm in the prior art under the condition of power supply of a power adapter and a battery.

The technical scheme of the utility model is that the wireless acousto-optic alarm comprises a power supply conversion circuit, an alarm unit connected with the power supply conversion circuit, a controller MCU connected with the power supply conversion circuit, a power supply adapter connected with the power supply conversion circuit and a battery, wherein the power supply adapter is isolated from a power supply path of the battery, and the power supply conversion circuit switches the power supply adapter and the battery to supply power.

Further, the alarm unit comprises a sound module, a flash module and a power circuit connected with the sound module and the flash module, wherein the power circuit provides power input for the sound module and the flash module.

Further, a voltage boosting circuit is connected between the power conversion circuit and the alarm unit, and the voltage boosting circuit converts the output voltage of the power conversion circuit into a voltage for the power circuit to work.

Further, the power conversion circuit comprises a detection pin connected with the power adapter and the battery, and a switch unit connected with the battery, wherein when the detection pin detects that the voltage of the power adapter is input, the switch unit is controlled to be switched off to switch the power supply of the power adapter.

And the wireless sound-light alarm is started when the wireless module receives a starting instruction.

Further, the sound module comprises a sound circuit and a voice IC connected with the sound circuit, and when the wireless sound-light alarm is started, the voice IC sends a pre-accessed alarm signal to the sound circuit to alarm.

Further, the flash module comprises a flash circuit and a control circuit connected with the flash circuit, and when the wireless acousto-optic alarm is started, the control circuit controls the flash circuit to emit light.

The utility model also provides a wireless fire alarm system which comprises a wireless fire alarm controller, a wireless fire detector control module, a wireless sound-light alarm, a wireless manual fire alarm button, a wireless input module, a wireless output module, a wireless input-output module and a bus type wireless repeater, wherein the wireless sound-light alarm adopts the wireless sound-light alarm.

Further, when the wireless terminal detects fire alarm information, the wireless repeater sends the fire alarm information to the wireless fire alarm controller, and the wireless fire alarm controller generates the starting instruction and sends the starting instruction to the wireless sound-light alarm to trigger alarm.

Further, the wireless terminal, the wireless repeater, the wireless fire alarm controller and the wireless sound-light alarm send and receive the fire information through a wireless channel.

Compared with the prior art, the utility model has at least the following beneficial effects:

the wireless repeater sends information such as states to the wireless repeater through the wireless transmitting circuit, the wireless repeater transfers the information to the fire alarm controller or the platform, and the fire alarm controller completes a preset program by controlling the downlink device to execute corresponding actions after processing the reported information, so that a large amount of wiring work and material cost are avoided, the cost is reduced, the operation is simplified, and the market competitiveness is improved; through the power supply change circuit, the priority level of power supply of the power adapter and the battery is set, automatic switching is performed, the power supply and the rear-stage application are separated, misoperation is reduced, and the reliability of the system is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic diagram of a wireless fire alarm system of the present invention;

FIG. 2 is a schematic block diagram of a wireless audible and visual alarm of the present invention;

FIG. 3 is a schematic diagram of a power conversion circuit according to the present invention;

FIG. 4 is a schematic circuit diagram of an alarm unit according to the present invention;

FIG. 5 is a circuit diagram of a wireless communication portion of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the utility model, and does not imply that every embodiment of the utility model must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.

The wireless acousto-optic alarm at present is supplied power for a power adapter or is supplied power for a battery, when the power adapter is used for supplying power, when special conditions such as fire occur, the problem that the acousto-optic alarm cannot be started due to the fact that the power supply is cut off can occur, when the battery is used for supplying power, the function is normal when standby monitoring is conducted, the function is invalid or reduced after starting, and the problem that the fire cannot be displayed is caused. The utility model provides a power adapter and a wireless acousto-optic alarm powered by a battery, which can automatically monitor a standby state and automatically switch a power supply, so that the wireless acousto-optic alarm can normally function under special conditions such as fire and the like.

Referring to fig. 2, the wireless sound and light alarm includes a power conversion circuit, a voltage boost circuit, an alarm circuit and a controller MCU, wherein the power conversion circuit is connected to a power adapter and a battery respectively, the power adapter and the battery supply power, and are isolated from each other according to different paths, the voltage of the power adapter is higher than the voltage of the battery, when the power adapter supplies power, the battery is in a non-power-supply state, and at this time, the battery has only its own extremely low self-power consumption, and the other side of the power conversion circuit is connected to the voltage boost circuit and the controller MCU, and is used for providing power input for the rest of circuits. In the utility model, the parameters of the power adapter are as follows: DC 12V 500mA, and the parameter of the battery is DC 3V lithium battery.

Specifically, please refer to fig. 3, which is a schematic circuit diagram of the power conversion circuit of the present invention, wherein J4 is a power adapter, and J2 is a battery, which are respectively used as two input paths to power the power conversion circuit, as can be seen from the figure, power supply paths of the power adapter J4 and the battery J2 are separated from each other, and meanwhile, a detection pin ADC-BAT is further disposed in the circuit, which is used for detecting a voltage input of the power adapter, a voltage of the power adapter is higher than a voltage of the battery, and when the detection pin ADC-BAT detects a high voltage input of the power adapter, the power supply of the battery is disconnected, and the power is supplied through the power adapter. As can be seen from the figure, a MOS transistor VM1 is further connected to one of the battery power supplies, when the voltage input of the power adapter is detected by the detection pin, the battery power supply is switched to the power adapter power supply by controlling the MOS transistor VM1 to disconnect the battery power supply, and when the voltage input of the power adapter is not detected, the MOS transistor VM1 is switched on, so that the power supply is performed by the battery.

During the power adapter power supply, the boost circuit transformation ratio is 2, and circuit supply pressure is less, but under the condition of battery powered, single chip microcomputer microprocessor is by the direct power supply of battery, and the transformation ratio that steps up simultaneously is close 9, and circuit pressure is great this moment, and the singlechip must accurate control circuit unit drive chronogenesis, satisfies the wireless transmission requirement promptly, also satisfies the demand that audible-visual annunciator started.

The power conversion circuit is further connected to the controller MCU, and a pin VCC thereof is used to provide a voltage input to the controller MCU. The other end of the power adapter is connected to a boost circuit, specifically, the output ends of the power adapter J4 and the battery J2 are connected to the anode of the diode D2 and then connected to the boost conversion chip U2, and the voltage of the power adapter J4 or the battery J2 is determined to be output to the boost conversion chip U2 after the voltage is detected through the detection pin ADC-BAT. The boost conversion chip comprises an input pin IN for receiving the input of the power adapter J4 or the battery J2, a conversion pin SW and a feedback pin FB, wherein the conversion pin SW is used for converting the voltage input to the boost conversion chip into the voltage needing to be output, and the feedback pin FB is connected between the resistor R16 and the resistor R17 and is used for receiving the feedback voltage signal output by the conversion pin SW.

Referring to fig. 2 and 4, the controller MCU is further connected to a wireless module for implementing wireless transmission of fire information, when a fire occurs, the wireless terminal detects a fire signal and transmits the fire signal to the wireless fire alarm controller through the wireless repeater, the wireless fire alarm controller generates a start instruction and transmits the start instruction to the wireless sound and light alarm, and the wireless sound and light alarm is started when receiving the start instruction and is used to remind a user of the occurrence of the fire. A large amount of wiring work and material cost are avoided through the wireless module, and market competitiveness is improved.

The wireless acousto-optic alarm comprises an alarm unit, a wireless acousto-optic alarm unit and a wireless control unit, wherein the alarm unit comprises an acoustic module and a flash module and is used for providing acousto-optic alarm signals, and when the wireless acousto-optic alarm receives a starting instruction, the alarm unit triggers an alarm to provide acousto-optic alarm signals.

Specifically, the alarm unit is connected to the output end of the voltage boost circuit, as can be seen from fig. 3 and 4, the voltage boost circuit outputs 24V to the alarm unit, and the transistor Q3, the resistor R11, the resistor R12, the voltage regulators ZD1 and ZD2, and the capacitors C31 and C32 form a voltage reduction circuit, which is used for reducing the 24V voltage output by the voltage boost circuit to 5V voltage, and is used for providing power input for the flash module and the sound module, and is equivalent to a power circuit.

The sound module comprises a sound circuit and a voice IC connected with the sound circuit, and when the wireless sound-light alarm receives a starting instruction to start, the voice IC sends a pre-accessed alarm signal to the sound circuit to alarm. The sound circuit adopts a buzzer B1 for alarming, the voice IC is U5, when the alarm is triggered, the voice IC sends a pre-accessed alarm signal to the buzzer B1, and the B1 triggers the alarm after receiving the alarm signal.

The flash module comprises three LED lamps which are connected in series, namely an LED3, an LED4 and an LED5, a chip U4, a resistor R9, a resistor R23, a resistor R29, a resistor R31, a capacitor C12, a capacitor C13, a capacitor C16 and a capacitor C17 form a free oscillation circuit, the free oscillation circuit is a control circuit of the flash module, the output end of the free oscillation circuit is connected to the base electrode of a triode Q9, the on-off of a triode Q9 is controlled through the output of the free oscillation circuit, the collector of the triode Q9 is connected to the LED lamp, the LED lamp is turned off when the triode Q9 is turned off, otherwise, the LED lamp emits light when the triode Q9 is turned on, and the flash of the LED lamp is realized through the free oscillation circuit.

As can be seen from fig. 2, the controller MCU is further connected with a key for triggering the sound module and the flash module to operate during the debugging phase of the wireless acousto-optic alarm.

Referring to fig. 5, it is a circuit diagram of a wireless communication part of the present invention, in which the sending and receiving instruction data are both controlled by SPI serial ports, as can be seen from fig. 2, the controller MCU is further connected to the wireless module, the wireless module receives the instruction of the wireless alarm controller and then sends the instruction to the microcontroller of the single chip, and the single chip sends out a corresponding control instruction to the relevant control circuit according to the analyzed instruction signal, so as to implement the function of sound and light alarm.

Referring to fig. 1, the present invention further provides a wireless fire alarm system, which includes a wireless fire alarm controller, a wireless fire detector control module (smoke and temperature sensing or combined), a wireless sound and light alarm, a wireless manual fire alarm button, a wireless input module, a wireless output module, a wireless input/output module, and a bus-type wireless repeater.

The wireless fire alarm controller is a central control of the whole system and is responsible for management and linkage of the system, gathers information of the terminal equipment in real time, analyzes and judges the information and displays the information on a liquid crystal interface. Meanwhile, the wireless fire alarm controller is compatible with the fire alarm linkage function of the wired part, so that a user can conveniently access the bus terminal equipment, and the purpose of fire alarm is realized.

The wireless input/output module integrates a wireless communication module and a control circuit and realizes the wireless data interaction

The linkage of terminal data acquisition and control equipment is realized.

The wireless acousto-optic alarm device comprises a wireless module, a power supply conversion circuit, a sound circuit, a flash circuit, a boosting circuit and a control circuit thereof. When the wireless acousto-optic alarm realizes fire alarm through wireless data interaction, the acousto-optic alarm signal is output, so that the purposes of warning fire places and guiding escape are achieved.

The wireless manual fire alarm button device comprises a wireless module and a manual alarm signal acquisition circuit, when a fire alarm occurs, the manual fire alarm button is pressed, and the device transmits a detected alarm signal to the fire alarm controller in a wireless mode to achieve the purpose of fire alarm.

The working principle of the wireless acousto-optic alarm is that the voltage of the power adapter is detected through the detection pin, the power adapter is determined to be switched to supply power and the battery supplies power, automatic switching of the power is achieved, and the wireless acousto-optic alarm can work normally under special conditions such as fire and the like. Meanwhile, wireless transmission of signals among all units is achieved through the wireless module, when a fire disaster occurs, the wireless terminal can send fire information to the wireless fire alarm controller, the wireless fire alarm controller generates a starting instruction and sends the starting instruction to the wireless sound-light alarm when receiving the fire disaster information, and the wireless sound-light alarm starts and controls the alarm unit to send sound-light alarm signals when receiving the starting instruction.

Compared with the prior art, the utility model sets the priority level of power supply of the power adapter and the battery through the power conversion circuit, automatically switches, separates the power supply from the rear-stage application, reduces misoperation and improves the reliability of the system. The wireless repeater transmits information such as states to the wireless repeater through a wireless (including but not limited to LoRa and NB) transmitting circuit, the wireless repeater transfers the information to the fire alarm controller or the platform, and the fire alarm controller completes a preset program by controlling the downlink device to execute corresponding actions after processing according to the reported information, so that a large amount of wiring work and material cost are saved, the cost is reduced, the operation is simplified, and the market competitiveness is improved. The wireless fire alarm system realizes the purpose of fire alarm in a wireless mode, is simple and convenient in wiring, and is particularly suitable for rural areas, three small places and historical relic protection places.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The wireless acousto-optic alarm is characterized by further comprising a power adapter and a battery which are connected with the power conversion circuit, wherein the power adapter is isolated from a power supply path of the battery, and the power conversion circuit switches the power adapter and supplies power to the battery.

2. The wireless audible and visual alarm according to claim 1, wherein said alarm unit comprises an audible module and a flash module, and a power circuit connected to said audible module and said flash module, said power circuit providing a power input to said audible module and said flash module.

3. The wireless acousto-optic alarm according to claim 2, wherein a booster circuit is further connected between the power conversion circuit and the alarm unit, and the booster circuit converts the output voltage of the power conversion circuit into a voltage for operating the power circuit.

4. The wireless audible and visual alarm according to claim 1, wherein said power conversion circuit comprises a detection pin connected to said power adapter and said battery, and a switch unit connected to said battery, wherein said switch unit is controlled to be turned off to switch the power supply of said power adapter when said detection pin detects the voltage input of said power adapter.

5. The wireless acousto-optic alarm according to claim 1, further comprising a wireless module connected to the controller MCU, wherein the wireless acousto-optic alarm is activated when the wireless module receives an activation instruction.

6. The wireless audible and visual alarm according to claim 2, wherein said audible module includes an audible circuit and a voice IC connected to said audible circuit, said voice IC sending a pre-accessed alarm signal to the audible circuit to alarm when said wireless audible and visual alarm is activated.

7. The wireless audible and visual alarm according to claim 2, wherein said flash module comprises a flash circuit and a control circuit connected to said flash circuit, said control circuit controlling said flash circuit to emit light when said wireless audible and visual alarm is activated.

8. The wireless fire alarm system comprises a wireless fire alarm controller, a wireless fire detector control module, a wireless sound-light alarm, a wireless manual fire alarm button, a wireless input module, a wireless output module, a wireless input-output module and a bus-type wireless repeater, and is characterized in that the wireless sound-light alarm adopts the wireless sound-light alarm according to any one of claims 1 to 7.

9. The wireless fire alarm system of claim 8, wherein the wireless terminal, the wireless repeater, the wireless fire alarm controller and the wireless sound and light alarm transmit and receive fire information through a wireless channel.