CN218038194U

CN218038194U - Fire acousto-optic alarm with multi-stage voice prompt function

Info

Publication number: CN218038194U
Application number: CN202221337683.6U
Authority: CN
Inventors: 张喜平
Original assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Current assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-12-13
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a fire acousto-optic siren of multistage voice prompt facility, including the fire alarm control ware that is used for carrying out the warning action, be connected with the bus route and be used for with the interactive bus alarm unit of fire alarm control ware, be used for with fire alarm control ware wireless communication's wireless alarm unit, bus alarm unit includes first controller, wireless alarm unit includes the second controller, fire acousto-optic siren is still including connecting first controller with the digital isolator of second controller, first controller with the second controller accessible the data interaction is carried out to the digital isolator, just first controller with the second controller all can independently with the fire alarm control ware communication triggers the warning action. Compared with the prior art, the utility model discloses a bus route and wireless path trigger alarm each other are backup, and automatic switch-over has improved the validity and the reliability of system greatly.

Description

Fire acousto-optic alarm with multi-stage voice prompt function

Technical Field

The utility model relates to a fire alarm field, especially a conflagration audible-visual annunciator of multistage pronunciation prompt facility.

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 evacuate and escape when a fire disaster occurs. GB 50116 'design code of fire automatic alarm system' also requires that the fire automatic alarm system is provided with a fire acousto-optic alarm.

In recent years, with the acceleration of urban updating pace, the urbanization rate of China is increased year by year, and large-scale commercial complexes in areas are obvious, but the increasingly severe fire-fighting environment is slightly insufficient, so that the fire disaster in residential areas, commercial complexes and large industrial areas occurs at any time, and serious personal and property losses are caused. This also presents a higher challenge to early warning and prevention in the fire fighting field.

The fire acousto-optic alarm in the current market is basically a bus type product, and some fire-fighting factories have wireless products, but the current acousto-optic alarm has the following defects in the current application:

1. at present, wireless products are mainly short-distance applications in a 433MHz frequency band, self-built LoRa platform or NB platform enterprises mainly concentrate on part of mainstream fire-fighting manufacturers, reliability and maintainability are guaranteed, and subsequent expansion is very convenient.

2. From the market research situation, the products currently on sale are either powered by a power source (bus type or common type), or battery powered (stand alone wireless type). On one hand, under the condition that power is supplied by a power supply, under the special conditions of fire and the like, the sound-light alarm cannot be started after the centralized power supply is cut off, so that the alarm function is lost; on the other hand, under the condition of power supply of the battery, the function is normal when the monitoring is in standby state, and the function is invalid or reduced after the monitoring is started, so that the aim of preventing fire from alarming is fulfilled.

3. Although the acousto-optic alarm product is an important alarm device of a fire-fighting fire alarm system, the acousto-optic alarm product has irreplaceable functions in the aspects of guiding evacuation and alarming, and the acousto-optic alarms in the current market are various in types, but lack devices with acousto-optic graded alarming, sound pressure grade regulation and control, voice broadcasting alarm information, wireless alarm information sending and fire-fighting broadcasting evacuation routes.

To the defect that exists among the prior art, the utility model provides a conflagration audible and visual alarm of multistage voice prompt function.

SUMMERY OF THE UTILITY MODEL

The defect to prior art existence, the utility model provides a conflagration audible and visual alarm of multistage voice prompt facility.

The technical scheme of the utility model be, provide a fire acousto-optic siren of multistage voice prompt facility, including the fire alarm control ware that is used for carrying out the warning action, be connected with the bus route and be used for with the mutual bus alarm unit of fire alarm control ware, be used for with fire alarm control ware wireless communication's wireless alarm unit, bus alarm unit includes first controller, wireless alarm unit includes the second controller, fire acousto-optic siren is still including connecting first controller with the digital isolator of second controller, first controller with the second controller accessible the data isolator carries out data interaction, just first controller with the second controller all can independently with the fire alarm control ware communication triggers the warning action.

The bus alarm unit further comprises a polarity conversion circuit connected with the bus and an LED indicating circuit used for displaying fire information, the polarity conversion circuit and the LED indicating circuit are both connected with the first controller, a power conversion unit, a comparator circuit and a current pulling circuit are integrated in the first controller, the first controller receives the bus information through the polarity conversion circuit, and processes the bus information through the comparator circuit and the current pulling circuit so as to feed back the bus information to the fire alarm controller.

Further, the polarity inversion circuit includes: the transient voltage suppression circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a diode D1, a rectifier bridge D2, a voltage stabilizing diode ZD1 and a transient voltage suppression diode TVS1;

one end of the resistor R1 is connected to a first output end of a bus, the other end of the resistor R1 is connected to a first end of the rectifier bridge D2, one end of the resistor R8 is connected to a second output end of the bus, the other end of the resistor R8 is connected to a second end of the rectifier bridge D2, one end of the capacitor C1 is connected between the resistor R1 and the rectifier bridge D2, the other end of the capacitor C1 is connected between the resistor R8 and the rectifier bridge D2 after being connected in series with a capacitor C4, the fourth end of the rectifier bridge D2 is connected between the capacitor C1 and the capacitor C4 and then grounded, one end of the resistor R2 is connected to the first controller, the other end of the resistor R2 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to the cathode of the voltage stabilizing diode ZD1 after being connected in series with the resistor R7, one end of the resistor R3 is connected between the resistor R7 and the diode D1, the other end of the capacitor R2 is connected to the first controller, and the other end of the resistor R3 is connected between the first controller and the other end of the capacitor C2, and the capacitor C3 are also connected to the first controller and the first controller.

Further, the LED indication circuit includes: the LED comprises a resistor R12, a resistor R13, a light emitting diode LED4 and a light emitting diode LED5;

one end of the resistor R12 is connected to the first controller, the other end of the resistor R is connected to the anode of the light emitting diode LED4, the cathode of the light emitting diode LED4 is grounded, one end of the resistor R13 is connected to the first controller, the other end of the resistor R is connected to the anode of the light emitting diode LED5, and the cathode of the light emitting diode LED5 is grounded.

The second controller is respectively connected with the power conversion circuit, the voice circuit, the flashing circuit and the wireless communication circuit and can be communicated with the fire alarm controller through the wireless communication circuit so as to trigger an alarm action.

Further, the power conversion circuit includes a first power conversion circuit connected to an external power supply and a second power conversion circuit connected to a battery, and the first power conversion circuit includes: the circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a capacitor C26, a capacitor C27, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a diode D22, a diode D23, a diode D24, a rectifier bridge D25, a buck chip U22, a fuse F20 and an inductor L21;

one end of the fuse F20 is connected to a first output end of the external power supply, the other end of the fuse F is connected to a second end of the rectifier bridge D25, a first end of the rectifier bridge D25 is connected to a second output end of the external power supply, a fourth end of the rectifier bridge D25 is grounded, one end of the resistor R27 is connected to a 24V power supply, the other end of the resistor R27 is connected to a resistor R28 in series and then grounded, the second controller is connected between the resistor R27 and the resistor R28, the rectifier bridge D25 is connected between the resistors R27 and 24V power supply, one end of the resistor R23 is connected to a fifth pin of the buck chip U22, the other end of the resistor R25 is connected to ground in series and then to the resistor R25, a fifth pin of the buck chip U22 is further connected between the resistors R27 and 24V power supply, a fourth pin is connected between the resistor R23 and the resistor R25, and the second pin is grounded, the first pin of the buck chip U22 is connected to a capacitor C26, an inductor L21 and a diode D22 in series and then to a 3.3V power supply, one end of the resistor R24 is connected between the inductor L21 and the diode D22, the other end of the resistor R24 is connected in series with the resistor R26 and then grounded, one end of the capacitor C29 is connected between the inductor L21 and the diode D22, the other end of the capacitor C32 is connected in series with the capacitor C32 and then grounded, one end of the capacitor C31 is connected between the inductor L21 and the diode D22, the other end of the capacitor C31 is grounded, the cathode of the diode D24 is connected between the inductor L21 and the capacitor C26, the anode of the diode D24 is grounded, the sixth pin of the buck chip U22 is connected to the cathode of the diode D24, the third pin is connected between the resistor R24 and the resistor R26, and the capacitor C29 and the capacitor C32 are connected, one end of the capacitor C27 is connected to the fifth pin of the buck chip U22 and the other end of the grounded, one end of the capacitor C30 is connected to the fifth pin of the buck chip U22 and the other end of the grounded, the cathode of the diode D23 is connected to the fifth pin of the buck chip U22, the fifth pin of the capacitor C27 is connected to the capacitor C, the anode is grounded.

Further, the second power conversion circuit includes: the circuit comprises a resistor R20, a resistor R22, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a diode D20, a diode D21, an inductor L20 and a boost chip U21;

a fifth pin of the boost chip U21 is connected with an inductor L20 in series and then is connected with a battery voltage, a first pin is connected with the second controller, one end of a resistor R20 is connected to the fifth pin of the boost chip, the other end of the resistor R20 is connected with a capacitor C20, a capacitor C23 and a resistor R22 in series in sequence and then is connected to the first pin of the boost chip U21, one end of the capacitor C22 is connected with a 3.3V power supply, and the other end of the capacitor C22 is grounded, a second pin of the boost chip is connected between the capacitor C20 and the capacitor C23 and between the capacitors C22 and 3.3V power supply respectively, a fourth pin of the boost chip is connected between the capacitor C23 and the resistor R22 and between the capacitors C22 and ground respectively, an anode of the diode D20 is connected to the fifth pin of the boost chip U21, a cathode of the diode D20 is connected to the second pin of the boost chip U21, anodes of the capacitors C24 and C25 are connected to the battery voltage and a cathode of the battery voltage, and a cathode of the diode D21 is connected to the battery voltage and a ground, and a cathode of the diode D21 is connected to the battery voltage.

Further, the voice circuit comprises a loudspeaker for sending a voice signal, a power amplifier circuit connected with the loudspeaker, a switch switching circuit for switching the state of the loudspeaker and the power amplifier circuit, and at least one voice chip for controlling the action of the switch switching circuit, wherein the voice chip is connected with the second controller and triggers the action of the switch switching circuit during fire.

Further, the flash circuit includes: the LED lamp comprises a resistor R4, a resistor R5, a resistor R6, a resistor R9, a resistor R10, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3 and a triode T1;

one end of the resistor R4 is connected with a 3.3V power supply, the other end of the resistor R4 is connected with the anode of the light emitting diode LED1, the cathode of the light emitting diode LED1 is connected with the collector of the triode T1, one end of the resistor R5 is connected with the 3.3V power supply, the other end of the resistor R5 is connected with the anode of the light emitting diode LED2, the cathode of the light emitting diode LED2 is connected with the collector of the triode T1, one end of the resistor R6 is connected with the 3.3V power supply, the other end of the resistor R6 is connected with the anode of the light emitting diode LED3, the cathode of the light emitting diode LED3 is connected with the collector of the triode T1, the base of the triode T1 is connected with the second controller after being connected with the resistor R9 in series, the emitter of the triode T1 is grounded, and one end of the resistor R10 is connected with the base of the triode T1, and the other end of the resistor R10 is connected with the emitter of the triode T1.

Further, the wireless communication circuit comprises a wireless module, an antenna and a microprocessor, wherein the wireless module realizes communication with the fire alarm controller through the antenna, and can generate a switching signal to be transmitted to the second controller after being analyzed by the microprocessor so as to control the state of each circuit of the wireless alarm unit.

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

the utility model discloses the product is based on two bus communication techniques, fuses radio communication (including but not limited to loRa and NB) technique, realizes bus and radio communication technique's multipath routing control. Automatic monitoring, mutual backup, realization fire control monitoring platform integration is melted and is link up. Under the condition of normal monitoring, the acousto-optic alarm and the fire alarm controller are communicated based on two buses, receive the instruction of the controller and feed back the self state information. If the bus has no response or no response in a period, the system automatically switches to a wireless path. Or the information is reported to the controller or the platform through the repeater, and the fire alarm controller completes the preset program by controlling the downlink device to execute corresponding actions after processing according to the reported address information, thereby ensuring the stability and reliability of the system and improving the market competitiveness.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.

FIG. 1 is a block diagram of the working principle of the preferred embodiment of the present invention;

FIG. 2 is a block diagram of the bus alarm unit of the present invention;

fig. 3 is a schematic diagram of the connection between the second controller and the peripheral circuit according to the present invention;

fig. 4 is a schematic connection diagram of a first power conversion circuit according to the present invention;

fig. 5 is a schematic connection diagram of a second power conversion circuit according to the present invention;

FIG. 6 is a schematic diagram of the connection of the voice circuit of the present invention;

FIG. 7 is a schematic diagram of the flash circuit of the present invention;

fig. 8 is a schematic connection diagram of the wireless communication circuit of the present invention.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described 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 structure of the present invention will be described in detail below with reference to the accompanying drawings and examples.

The utility model discloses the product is based on two bus communication techniques, fuses radio communication (including but not limited to loRa and NB) technique, realizes bus and radio communication technique's multipath routing control. Automatic monitoring, each other is the backup, realizes that fire control monitoring platform integration fuses to link up.

Specifically, the utility model provides a conflagration audible and visual alarm, including the fire alarm control ware that is used for carrying out the warning action, be connected with bus path and be used for with the interactive bus alarm unit of fire alarm control ware, be used for with fire alarm control ware wireless communication's wireless alarm unit, bus alarm unit includes first controller, wireless alarm unit includes the second controller, conflagration audible and visual alarm ware is still including the digital isolator who connects first controller and second controller, but first controller and second controller carry out data interaction through digital isolator, and first controller and second controller all can independently trigger the warning action with fire alarm control ware communication.

Referring to fig. 1, the CPU1 is a first controller, the CPU2 is a second controller, and the first controller and the second controller are connected by a digital isolator to implement communication between the first controller and the second controller. Under the condition of normal monitoring, the sound-light alarm and the fire alarm controller are communicated based on two buses, receive the instruction of the controller and feed back the self state information. If the bus has no response or no response in a period, the system automatically switches to a wireless path. Or the information is reported to the controller or the platform through the repeater, the fire alarm controller completes the preset program by controlling the downlink device to execute the corresponding action after processing according to the reported address information, the stability and the reliability of the system are ensured, the market competitiveness is improved, and the bus path is superior to the wireless path, mutually backup and automatically switched no matter in a normal or fire alarm state.

Further, referring to fig. 1, the bus alarm unit further includes a polarity conversion circuit connected to the bus, and an LED indication circuit for displaying fire information, both the polarity conversion circuit and the LED indication circuit are connected to the first controller, the first controller is further integrated with a power conversion unit, a comparator circuit, and a current drawing circuit, the first controller receives the bus information through the polarity conversion circuit, and processes the bus information through the comparator circuit and the current drawing circuit to feed back to the fire alarm controller, thereby implementing alarm control on the bus side.

In fig. 1, a CPU1 is a first controller, a polarity conversion circuit at a bus, an LED indication unit is an LED indication circuit, a power supply unit is a power conversion unit, a decoding unit and a code sending unit are composed of a comparator circuit and a pull current circuit, and the power supply circuit gets electricity from the bus and converts the electricity into a voltage of 3.3V to supply power to the first controller.

Referring to fig. 2, the polarity conversion circuit includes: the transient voltage suppression circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a diode D1, a rectifier bridge D2, a voltage stabilizing diode ZD1 and a transient voltage suppression diode TVS1;

one end of a resistor R1 is connected to a first output end of the bus, the other end of the resistor R1 is connected to a first end of a rectifier bridge D2, one end of a resistor R8 is connected to a second output end of the bus, the other end of the resistor R8 is connected to a second end of the rectifier bridge D2, one end of a transient voltage suppression diode TVS1 is connected between the resistor R1 and the rectifier bridge D2, the other end of the transient voltage suppression diode TVS1 is connected between the resistor R8 and the rectifier bridge D2, one end of a capacitor C1 is connected between the resistor R1 and the rectifier bridge D2, the other end of the capacitor C1 is connected between the resistor R8 and the rectifier bridge D2 after being connected with the capacitor C4 in series, the fourth end of the rectifier bridge D2 is connected between the capacitor C1 and the capacitor C4 and then grounded, one end of the resistor R2 is connected with a first controller, the other end of the capacitor C2 is grounded, one end of the capacitor C3 is connected between the resistor R2 and the first controller, and the other end of the first controller are connected with the first controller and the second controller, and the other end of the second controller are connected with the first controller ZD 1.

The transient voltage suppression diode TVS1 is used for avoiding the damage to a back-end circuit caused by overhigh bus voltage input, the rectifier bridge D2 is used for rectifying the bus circuit to convert direct current which can be used by the first controller, and the capacitor C2 and the capacitor C3 are used as filter capacitors for filtering interference signals in the bus. Through the arrangement of the polarity conversion circuit, the first controller can take power from the bus so as to ensure the work of the first controller. Two output ends of the polarity conversion circuit are respectively connected to a VIN pin and a TRX pin of the first controller so as to supply power to the first controller.

The LED indicating circuit includes: the LED comprises a resistor R12, a resistor R13, a light emitting diode LED4 and a light emitting diode LED5;

The LED indicating circuit is respectively connected to an LED-XH pin and an LED-BJ pin of the first controller, and the first controller can control the light emitting states of the light emitting diodes LED4 and LED5 through the LED-XH pin and the LED-BJ pin so as to enable the light emitting diodes to emit light in a flashing state and a normally-on state.

The BUS alarm unit communicates with the wireless alarm unit through a digital isolator, as shown in fig. 2, a chip U1 is a digital isolator which has an RX-BUS pin and a TX-BUS pin for connecting with a first controller, and a TX-P pin and an RX-P pin for connecting with a second controller, and the first controller and the second controller can be connected simultaneously through the chip U1 to realize communication between the BUS alarm unit and the wireless alarm unit.

Referring to fig. 1 and 3, the wireless alarm unit further includes a power conversion circuit for supplying power, a voice circuit for alarming and indicating fire alarm information, a flash circuit for alarming fire occurrence, and a wireless communication circuit for wireless communication, and the second controller is respectively connected to the power conversion circuit, the voice circuit, the flash circuit, and the wireless communication circuit, and can communicate with the fire alarm controller through the wireless communication circuit to trigger an alarm operation.

Referring to fig. 4, the first power conversion circuit includes: the circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a capacitor C26, a capacitor C27, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a diode D22, a diode D23, a diode D24, a rectifier bridge D25, a voltage reduction chip U22, a fuse F20 and an inductor L21;

one end of a fuse F20 is connected to a first output end of an external power supply, the other end of the fuse F20 is connected to a second end of a rectifier bridge D25, the first end of the rectifier bridge D25 is connected to a second output end and a fourth end of the external power supply, one end of a resistor R27 is connected to a 24V power supply, the other end of the resistor R27 is connected to a resistor R28 in series and then is grounded, a second controller is connected between the resistor R27 and the resistor R28, the rectifier bridge D25 is connected between the resistor R27 and the 24V power supply, one end of a resistor R23 is connected to a fifth pin of a voltage reduction chip U22, the other end of the resistor R25 is connected to the ground in series and then is grounded, the fifth pin of the voltage reduction chip U22 is also connected between the resistor R27 and the 24V power supply, the fourth pin is connected between the resistor R23 and the resistor R25 and the second pin is grounded, the first pin of the voltage reduction chip U22 is sequentially connected to a capacitor C26, an inductor L21 and a diode D22 in series and then is connected to a 3.3V power supply, one end of a resistor R24 is connected between the inductor L21 and the diode D22, the other end of the resistor R24 is connected in series with a resistor R26 and then grounded, one end of a capacitor C29 is connected between the inductor L21 and the diode D22, the other end of the capacitor C31 is connected between the inductor L21 and the diode D22 and then grounded, the cathode of the diode D24 is connected between the inductor L21 and the capacitor C26, the anode of the diode D24 is grounded, the sixth pin of the buck chip U22 is connected to the cathode of the diode D24, the third pin is respectively connected between the resistor R24 and the resistor R26 and between the capacitor C29 and the capacitor C32, one end of the capacitor C27 is connected to the fifth pin of the buck chip U22 and the other end of the capacitor C22 is grounded, one end of the capacitor C30 is connected to the fifth pin of the buck chip U22 and the other end of the capacitor C is grounded, and the cathode of the diode D23 is connected to the fifth pin of the buck chip U22 and the anode of the buck chip U22.

In addition, the first power conversion circuit also integrates a polarity conversion function through a rectifier bridge D25, and can convert the current input by the external power supply into direct current used by the second controller through the function of the rectifier bridge D25. The power conversion 1 (step-down) and the polarity conversion on the external power supply side as in fig. 1 constitute a first power conversion circuit.

Referring to fig. 5, the second power conversion circuit includes: the circuit comprises a resistor R20, a resistor R22, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a diode D20, a diode D21, an inductor L20 and a boost chip U21;

a fifth pin of the boost chip U21 is connected with the inductor L20 in series and then is connected with the battery voltage, the first pin is connected with the second controller, one end of the resistor R20 is connected to the fifth pin of the boost chip, the other end of the resistor R20 is connected with the first pin of the boost chip U21 in series in sequence, one end of the capacitor C22 is connected with the 3.3V power supply, the other end of the capacitor C22 is grounded, the second pin of the boost chip is connected between the capacitor C20 and the capacitor C23 and between the capacitor C22 and the 3.3V power supply respectively, the fourth pin of the boost chip is connected between the capacitor C23 and the resistor R22 and between the capacitor C22 and the ground respectively, the anode of the diode D20 is connected to the fifth pin of the boost chip U21, the cathode of the diode D20 is connected to the second pin of the boost chip U21, the anodes of the capacitor C24 and the capacitor C25 are connected with the battery voltage, the cathode of the diode D21 is connected with the battery voltage, and the anode of the diode is grounded.

The battery voltage is generally lower than the operating voltage of the second controller, so that the voltage needs to be boosted by the boost chip U21, for example, in fig. 2, the power supply is converted into a second power supply conversion circuit 2 (boost). The first power supply conversion circuit and the second power supply conversion circuit are controlled to automatically switch through the second controller, when an external power supply supplies power, the system detects that the power supply voltage is normal, the battery is in a non-power supply state at the moment, and the battery only has extremely low self-power consumption. The power supply voltage is converted into a common power supply of other parts of the circuit through the first power supply conversion circuit. When detecting that the external power supply is short of power, the battery starts to supply power, and rated voltage is output after passing through the second power supply conversion circuit and is supplied to the rear-stage circuit to work.

Referring to fig. 6, the voice circuit includes a speaker for sending a voice signal, a power amplifier circuit connected to the speaker, a switch switching circuit for switching the states of the speaker and the power amplifier circuit, and at least one voice chip for controlling the operation of the switch switching circuit, and the voice chip is connected to the second controller and triggers the switch switching circuit to operate in case of fire.

The voice chip records different graded fire alarm sounds, evacuation voices and fire-fighting broadcast evacuation voices in advance. When a fire alarm occurs, the automatic fire alarm system sends corresponding instruction information according to the fire alarm information, and the voice chip is controlled to drive the loudspeaker to play corresponding voice, indicate the fire alarm information and guide evacuation paths. And the power amplifier circuit that belonged to the reputation siren and preset carries out the power amplifier action, satisfies the fire alarm pronunciation rank that special condition or special place required, disposes in advance or according to instruction electronic switch automatic switch, satisfies the on-the-spot requirement.

Referring to fig. 7, the flash circuit includes: the LED lamp comprises a resistor R4, a resistor R5, a resistor R6, a resistor R9, a resistor R10, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3 and a triode T1;

one end of the resistor R4 is connected with a 3.3V power supply, the other end of the resistor R is connected with the anode of the light emitting diode LED1, the cathode of the light emitting diode LED1 is connected with the collector of the triode T1, one end of the resistor R5 is connected with the 3.3V power supply, the other end of the resistor R is connected with the anode of the light emitting diode LED2, the cathode of the light emitting diode LED2 is connected with the collector of the triode T1, one end of the resistor R6 is connected with the 3.3V power supply, the other end of the resistor R is connected with the anode of the light emitting diode LED3, the cathode of the light emitting diode LED3 is connected with the collector of the triode T1, the base of the triode T1 is connected with the second controller after being connected with the resistor R9 in series, the emitter is grounded, one end of the resistor R10 is connected with the base of the triode T1, and the other end of the emitter of the triode T1.

Because the second controller is connected to the base of the triode T1, when the second controller sends a high level signal, the triode T1 is turned on, and the light emitting diodes LED1, LED2, and LED3 start to emit light. Through the frequency of adjusting the output of second controller, can adjust the frequency that emitting diode LED1, emitting diode LED2, emitting diode LED3 flashed, the utility model discloses in can correspond different states in order to indicate the user through emitting diode LED1, emitting diode LED2, emitting diode LED 3's flash of light frequency, wherein, the flash of light under the fire alarm state is dazzlingly, the emergence of warning people's fire incident to in time begin sparse withdraw.

Referring to fig. 8, the wireless communication circuit includes a wireless module, an antenna, and a microprocessor, wherein the wireless module communicates with the fire alarm controller through the antenna, and generates a switching signal to be transmitted to the second controller after being analyzed by the microprocessor, so as to control the state of each circuit of the wireless alarm unit.

The sending and receiving instruction data are controlled by an SPI serial port, the wireless module receives the instruction of the fire alarm controller and then sends the instruction to the singlechip in the microcontroller for analysis, and the singlechip sends a corresponding control instruction to a related control circuit according to the analyzed instruction signal to realize the acousto-optic warning function. All wireless parts are integrated in a wireless module (including but not limited to an LoRa module and an NB module) to complete the function of wireless communication.

Compared with the prior art, the utility model discloses based on two bus communication techniques, fuse radio communication (including but not limited to loRa and NB) technique, realize bus and radio communication technique's multipath routing control. Automatic monitoring, mutual backup, realization fire control monitoring platform integration is melted and is link up. Under the condition of normal monitoring, the acousto-optic alarm and the fire alarm controller are communicated based on two buses, receive the instruction of the controller and feed back the self state information. If the bus has no response or no response in a period, the system automatically switches to a wireless path. Or the information is reported to the controller or the platform through the repeater, and the fire alarm controller completes the preset program by controlling the downlink device to execute corresponding actions after processing according to the reported address information, thereby ensuring the stability and reliability of the system and improving the market competitiveness. No matter in normal or fire alarm state, the bus path is superior to the radio path, and the bus path is backup and switched automatically.

The purposes of timely alarming and timely dealing with treatment can be achieved only by indicating evacuation and guiding escape routes through humanized graded voice. The utility model discloses can not make clear of fire alarm information to the fire alarm sound of current audible-visual annunciator, sparse indicate obscure defect, adopt humanized hierarchical audio alert indicating mode, clearly and definitely point out fire alarm information, guide sparse route. Under the fire alarm state, the controller intelligently plans an evacuation route based on the fire alarm address information, issues a fire acousto-optic alarm of a corresponding address end to start, and plays corresponding voice alarm information according to alarm instruction information.

The product of this patent is for guaranteeing system reliability, through power change circuit, sets up power and two power supply systems of battery, and automatic switch-over is each other for the backup. Under normal conditions, the power supply is used for supplying power and monitoring the power supply condition in real time, the feedback system displays power supply information, when the power supply is detected to be in power shortage, the battery is automatically switched for supplying power, and the power shortage information is fed back to the controller or the platform to remind operators of checking. When the fire alarm is in a fire alarm state, the battery can also start the sound-light alarm, and the sound-light alarm plays corresponding voice alarm information according to the alarm instruction information, so that the effectiveness and the reliability of the system are ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A fire acousto-optic alarm with a multi-stage voice prompt function is characterized by comprising a fire alarm controller, a bus alarm unit and a wireless alarm unit, wherein the fire alarm controller is used for executing an alarm action, the bus alarm unit is connected with a bus path and used for interacting with the fire alarm controller, the wireless alarm unit is used for wirelessly communicating with the fire alarm controller, the bus alarm unit comprises a first controller, the wireless alarm unit comprises a second controller, the fire acousto-optic alarm further comprises a digital isolator, the digital isolator is connected with the first controller and the second controller, the first controller and the second controller can perform data interaction through the digital isolator, and the first controller and the second controller can independently trigger the alarm action through the communication with the fire alarm controller.

2. The fire sound and light alarm of claim 1, wherein the bus alarm unit further comprises a polarity conversion circuit connected to the bus, and an LED indicating circuit for displaying fire information, the polarity conversion circuit and the LED indicating circuit are both connected to the first controller, a power conversion unit, a comparator circuit and a current-drawing circuit are further integrated in the first controller, and the first controller receives bus information through the polarity conversion circuit and processes the bus information through the comparator circuit and the current-drawing circuit to feed back to the fire alarm controller.

3. A fire acoustic and optical alarm according to claim 2, wherein the polarity reversing circuit comprises: the transient voltage suppression circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a diode D1, a rectifier bridge D2, a voltage stabilizing diode ZD1 and a transient voltage suppression diode TVS1;

4. A fire acousto-optic alarm according to claim 3 characterised in that the LED indication circuit includes: the LED comprises a resistor R12, a resistor R13, a light emitting diode LED4 and a light emitting diode LED5;

one end of the resistor R12 is connected to the first controller, the other end of the resistor R12 is connected to the anode of the light emitting diode LED4, the cathode of the light emitting diode LED4 is grounded, one end of the resistor R13 is connected to the first controller, the other end of the resistor R13 is connected to the anode of the light emitting diode LED5, and the cathode of the light emitting diode LED5 is grounded.

5. The acousto-optic fire alarm according to claim 1, wherein the wireless alarm unit further comprises a power conversion circuit for supplying power, a voice circuit for alarming and indicating fire alarm information, a flash circuit for alarming fire occurrence, and a wireless communication circuit for wireless communication, and the second controller is respectively connected to the power conversion circuit, the voice circuit, the flash circuit and the wireless communication circuit, and can communicate with the fire alarm controller through the wireless communication circuit to trigger an alarm action.

6. The acousto-optic fire alarm according to claim 5, wherein the power conversion circuit includes a first power conversion circuit connected to an external power supply and a second power conversion circuit connected to a battery, the first power conversion circuit including: the circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a capacitor C26, a capacitor C27, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a diode D22, a diode D23, a diode D24, a rectifier bridge D25, a buck chip U22, a fuse F20 and an inductor L21;

one end of the fuse F20 is connected to a first output end of the external power supply, the other end of the fuse F is connected to a second end of the rectifier bridge D25, a first end of the rectifier bridge D25 is connected to a second output end of the external power supply, a fourth end of the rectifier bridge D25 is grounded, one end of the resistor R27 is connected to a 24V power supply, the other end of the resistor R27 is connected to a resistor R28 in series and then grounded, the second controller is connected between the resistor R27 and the resistor R28, the rectifier bridge D25 is connected between the resistors R27 and 24V power supply, one end of the resistor R23 is connected to a fifth pin of the buck chip U22, the other end of the resistor R25 is connected to ground in series and then to the resistor R25, a fifth pin of the buck chip U22 is further connected between the resistors R27 and 24V power supply, a fourth pin is connected between the resistor R23 and the resistor R25, and the second pin is grounded, the first pin of the buck chip U22 is connected to a capacitor C26, an inductor L21 and a diode D22 in series and then to a 3.3V power supply, one end of the resistor R24 is connected between the inductor L21 and the diode D22, the other end of the resistor R24 is connected in series with the resistor R26 and then grounded, one end of the capacitor C29 is connected between the inductor L21 and the diode D22, the other end of the capacitor C32 is connected in series with the capacitor C32 and then grounded, one end of the capacitor C31 is connected between the inductor L21 and the diode D22, the other end of the capacitor C31 is grounded, the cathode of the diode D24 is connected between the inductor L21 and the capacitor C26, the anode of the diode D24 is grounded, the sixth pin of the buck chip U22 is connected to the cathode of the diode D24, the third pin is connected between the resistor R24 and the resistor R26, and the capacitor C29 and the capacitor C32 are connected, one end of the capacitor C27 is connected to the fifth pin of the buck chip U22 and the other end of the grounded, one end of the capacitor C30 is connected to the fifth pin of the buck chip U22 and the other end of the grounded, the cathode of the diode D23 is connected to the fifth pin of the buck chip U22, the fifth pin of the capacitor C27 is connected to the capacitor C, the positive electrode is grounded.

7. The acousto-optic fire alarm according to claim 6, wherein the second power conversion circuit includes: the circuit comprises a resistor R20, a resistor R22, a capacitor C20, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a diode D20, a diode D21, an inductor L20 and a boost chip U21;

a fifth pin of the boost chip U21 is connected with an inductor L20 in series and then is connected with a battery voltage, a first pin is connected with the second controller, one end of the resistor R20 is connected to the fifth pin of the boost chip, the other end of the resistor R20 is connected with the first pin of the boost chip U21 in series after being connected with a capacitor C20, a capacitor C23 and a resistor R22 in sequence, one end of the capacitor C22 is connected with a 3.3V power supply, and the other end of the capacitor C22 is grounded, a second pin of the boost chip is connected between the capacitor C20 and the capacitor C23 and between the capacitor C22 and the 3.3V power supply respectively, a fourth pin of the boost chip is connected between the capacitor C23 and the resistor R22 and between the capacitor C22 and ground respectively, an anode of the diode D20 is connected to the fifth pin of the boost chip U21, a cathode of the diode D20 is connected to the second pin of the boost chip U21, anodes of the capacitor C24 and the capacitor C25 are connected with the battery voltage and a cathode of the diode D21 is connected with the battery voltage, and a cathode of the diode D21 is connected with the battery voltage and a ground.

8. The acousto-optic fire alarm according to claim 5, wherein the voice circuit includes a speaker for emitting a voice signal, a power amplifier circuit connected to the speaker, a switch switching circuit for switching the state of the speaker and the power amplifier circuit, and at least one voice chip for controlling the operation of the switch switching circuit, and the voice chip is connected to the second controller and triggers the operation of the switch switching circuit in case of fire.

9. A fire acousto-optic alarm according to claim 5 characterised in that the flash circuit includes: the LED lamp comprises a resistor R4, a resistor R5, a resistor R6, a resistor R9, a resistor R10, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3 and a triode T1;

10. The sound and light alarm for fire hazard of claim 5, wherein the wireless communication circuit comprises a wireless module, an antenna and a microprocessor, the wireless module realizes communication with the fire alarm controller through the antenna, and can generate a switch signal to be transmitted to the second controller after being analyzed by the microprocessor so as to control the state of the circuit of each part of the wireless alarm unit.