CN212391860U - Regional explosion-proof audible alarm circuit, regional explosion-proof audible alarm and system - Google Patents
Regional explosion-proof audible alarm circuit, regional explosion-proof audible alarm and system Download PDFInfo
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- CN212391860U CN212391860U CN202021422331.1U CN202021422331U CN212391860U CN 212391860 U CN212391860 U CN 212391860U CN 202021422331 U CN202021422331 U CN 202021422331U CN 212391860 U CN212391860 U CN 212391860U
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Abstract
The application relates to a regional explosion-proof audible alarm circuit, a regional explosion-proof audible alarm and a system; regional explosion-proof stereo set alarm circuit includes main control chip, wireless power amplifier circuit, signal transmission circuit, signal processing circuit, light alarm output circuit and stereo set drive circuit, wherein, wireless power amplifier circuit is connected respectively to the main control chip, signal transmission circuit, signal processing circuit, light alarm output circuit and sound drive circuit to this application regional explosion-proof stereo set alarm circuit can accept the wireless alarm signal of external transmission to carry out audible-visual annunciation, has avoided the circuit of equipment fixing process to walk the line, has saved the installation and has been dated a.
Description
Technical Field
The application relates to the technical field of industrial field explosive gas and toxic and harmful gas concentration alarm, in particular to a regional explosion-proof sound alarm circuit, a regional explosion-proof sound alarm and a system.
Background
In industrial fields such as large-scale petrochemical industry, dangerous situations such as explosive gas and toxic and harmful gas leakage exist, and when the dangerous situations occur, on-site workers need to be alarmed so as to evacuate personnel and investigate risks in time. At present, generally, an alarm is installed on an industrial field such as a large-scale petrochemical industry and the like to perform safety alarm, however, in the implementation process, the inventor finds that at least the following problems exist in the traditional technology: the traditional alarm is high in installation and arrangement cost.
SUMMERY OF THE UTILITY MODEL
On the basis, the problems that the traditional alarm is complex in setting operation and high in difficulty and installation and arrangement cost are needed, and the regional explosion-proof sound alarm circuit, the regional explosion-proof sound alarm and the system are provided.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a regional explosion-proof audible alarm circuit, which includes a main control chip, a wireless power amplifier circuit, a signal transmission circuit, a signal processing circuit, an optical alarm output circuit, and an audible driving circuit;
the main control chip is respectively connected with the wireless power amplifier circuit, the signal transmission circuit, the signal processing circuit, the light alarm output circuit and the sound drive circuit.
In one embodiment, the wireless power amplifier circuit comprises a sound power amplifier circuit and a wireless communication module;
the connector of the wireless communication module is respectively connected with the sound power amplification circuit and the main control chip; the sound power amplification circuit is used for driving the loudspeaker; the wireless communication module is used for receiving an externally input wireless signal;
the sound power amplifier circuit comprises a first TDA7498 chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a resistor R1, a resistor R2, a resistor R3, an inductor L1 and an inductor L2;
one end of the capacitor C1 and one end of the capacitor C2 are connected with the 22 nd pin of the first TDA7498 chip; the other end of the capacitor C1 is connected with a connector of the wireless communication module; the other end of the capacitor C2 is grounded;
one end of the capacitor C3 and one end of the capacitor C4 are connected with the 23 rd pin of the first TDA7498 chip; the other end of the capacitor C3 is connected with a connector of the wireless communication module; the other end of the capacitor C4 is grounded;
one end of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 is connected with the 4th pin and the 5th pin of the first TDA7498 chip and is grounded; the other ends of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are connected with a pin 6 and a pin 7 of the first TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C10 is connected with the 8 th pin and the 9 th pin of the first TDA7498 chip, and the other end is connected with one end of the resistor R1; the other end of the resistor R1 is connected with the No. 2 pin and the No. 3 pin of the first TDA7498 chip;
one end of the inductor L1 is connected with the other end of the resistor R1, and the other end is connected with one end of the capacitor C11; one end of the inductor L2 is connected with one end of the capacitor C10, and the other end is connected with the other end of the capacitor C11;
one end of the capacitor C12 is connected with the other end of the inductor L1, the other end of the capacitor C12 is connected with the other end of the inductor L2 through the capacitor C13, and the other end of the capacitor C12 is grounded;
one end of the resistor R2 is connected with the other end of the inductor L1, and the other end of the resistor R2 is connected with one end of the capacitor C14; the other end of the capacitor C14 is connected with one end of the capacitor C15; the other end of the capacitor C15 is connected with one end of the resistor R3; the other end of the resistor R3 is connected with the other end of the inductor L2; the capacitor C14 is grounded; one end of the resistor R2 and the other end of the resistor R3 are used for connecting a loudspeaker.
In one embodiment, the signal transmission circuit comprises an SP3485 chip, a transistor Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C16, a fuse F1, a fuse F2, a bidirectional TVS tube D1, and a bidirectional TVS tube D2;
an emitter of the triode Q1 is externally connected with a power supply, a base is connected with one end of the resistor R4, and a collector is connected with one end of the resistor R5 and the No. 2 pin and the No. 3 pin of the SP3485 chip; the other end of the resistor R4 is connected with the 4th pin of the SP3485 chip; the other end of the resistor R5 is grounded; the 1 st pin and the 4th pin of the SP3485 chip are connected with the main control chip;
one end of the capacitor C16 is connected with the 8 th pin of the SP3485 chip, and the other end is connected with one end of the resistor R6 and grounded; the other end of the resistor R6 is connected with the 7 th pin of the SP3485 chip;
one end of the resistor R7 is connected with the 6 th pin of the SP3485 chip, and the other end is externally connected with a power supply;
one end of the fuse F1 is connected with the 6 th pin of the SP3485 chip, and the other end is grounded through a bidirectional TVS tube D1; the other end of the fuse F1 is used as an external connecting terminal;
one end of the fuse F2 is connected with the 7 th pin of the SP3485 chip, and the other end is grounded through a bidirectional TVS tube D2; the other end of the fuse F2 is used as an external connection terminal.
In one embodiment, the device further comprises an infrared receiving circuit; the main control chip is connected with the infrared receiving circuit.
In one embodiment, the infrared receiving circuit comprises an infrared receiving tube U1, a capacitor C17 and a resistor R8;
the first end of the infrared receiving tube U1 is connected with one end of the resistor R8, the second end is connected with the main control chip, and the third end is connected with the ground;
the other end of the resistor R8 is connected with one end of the capacitor C17 and is externally connected with a power supply; the other terminal of the capacitor C17 is connected to ground.
In one embodiment, the infrared receiving tube U1 is a HS0038 type infrared receiving tube U1.
In one embodiment, the signal processing circuit comprises a fuse F3, a fuse F4, a piezoresistor RV1, a piezoresistor RV2, a bidirectional TVS tube D3, a bidirectional TVS tube D4, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13 and a photocoupler U2;
one end of the fuse F3 is connected with one end of the piezoresistor RV1 and the bidirectional TVS tube D3, and the other end of the fuse F3 is used as an external wiring terminal; the other ends of the piezoresistor RV1 and the bidirectional TVS tube D3 are grounded;
one end of the fuse F4 is connected with one end of the piezoresistor RV2 and the bidirectional TVS tube D4, and the other end of the fuse F4 is used as an external wiring terminal; the other ends of the piezoresistor RV2 and the bidirectional TVS tube D4 are grounded;
one end of the resistor R9 is connected with one end of the fuse F3, and the other end is externally connected with a power supply; one end of the resistor R10 is connected with one end of the fuse F3, and the other end is connected with one end of the fuse F4 and one end of the resistor R11; the other end of the resistor R11 is connected with the first end of a photoelectric coupler U2;
the second end of the photoelectric coupler U2 is connected with the other end of the bidirectional TVS tube D4, the third end is connected with a resistor R12 and a resistor R13, and the fourth end is externally connected with a power supply; the resistor R12 is connected with the main control chip; the other end of the resistor R13 is connected to ground.
In one embodiment, the sound driving circuit comprises a second TDA7498 chip, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a resistor R14, a resistor R15, a resistor R16, an inductor L3, an inductor L4, and a digital potentiometer;
one end of the capacitor C18 and one end of the capacitor C19 are connected with the 32 nd pin of the second TDA7498 chip; the other end of the capacitor C18 is connected with the 4th pin of the digital potentiometer U3; the other end of the capacitor C19 is grounded; the 3 rd pin, the 5th pin and the 8 th pin of the digital potentiometer U3 are connected with an active chip;
one end of the capacitor C20 and one end of the capacitor C21 are connected with the 33 rd pin of the first TDA7498 chip; the other end of the capacitor C20 is grounded; the other end of the capacitor C21 is grounded;
one end of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 is connected with the 4th pin and the 5th pin of the second TDA7498 chip and is grounded; the other ends of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 are connected with a pin 6 and a pin 7 of the second TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C27 is connected with the 8 th pin and the 9 th pin of the second TDA7498 chip, and the other end is connected with one end of the resistor R14; the other end of the resistor R14 is connected with the No. 2 pin and the No. 3 pin of the second TDA7498 chip;
one end of the inductor L3 is connected with the other end of the resistor R14, and the other end is connected with one end of the capacitor C28; one end of the inductor L4 is connected with one end of the capacitor C27, and the other end is connected with the other end of the capacitor C28;
one end of the capacitor C29 is connected with the other end of the inductor L3, the other end of the capacitor C29 is connected with the other end of the inductor L4 through the capacitor C30, and the other end of the capacitor C29 is grounded;
one end of the resistor R15 is connected with the other end of the inductor L3, and the other end of the resistor R15 is connected with one end of the capacitor C31; the other end of the capacitor C31 is connected with one end of the capacitor C32; the other end of the capacitor C32 is connected with one end of the resistor R16; the other end of the resistor R16 is connected with the other end of the inductor L4; the capacitor C31 is grounded; one end of the resistor R15 and the other end of the resistor R16 are used for connecting a loudspeaker.
On the other hand, the embodiment of the application also provides a regional explosion-proof sound alarm, which comprises the regional explosion-proof sound alarm circuit and an alarm shell;
the regional explosion-proof sound alarm circuit is arranged in the alarm shell.
In another aspect, an embodiment of the present application further provides an area explosion-proof sound alarm system, including a plurality of area explosion-proof sound alarms described above; the system also comprises a server, background equipment and a plurality of associated equipment;
the regional explosion-proof audible alarms are in one-to-one correspondence with the associated equipment; the explosion-proof sound alarm of each area is respectively connected with the server in a wireless way; the server is connected with the background equipment; the related equipment is used for sending alarm signals to the regional explosion-proof audible alarm.
One of the above technical solutions has the following advantages and beneficial effects:
the regional explosion-proof sound alarm circuit that each embodiment of this application provided, including main control chip, wireless power amplifier circuit, signal transmission circuit, signal processing circuit, light alarm output circuit and stereo set drive circuit, wherein, wireless power amplifier circuit is connected respectively to the main control chip, signal transmission circuit, signal processing circuit, light alarm output circuit and sound drive circuit, thereby this application regional explosion-proof sound alarm circuit can accept the wireless alarm signal of outside transmission to carry out audible and visual alarm, the circuit of having avoided the equipment fixing process is walked the line, the installation is old.
Drawings
FIG. 1 is a schematic diagram of a regional explosion-proof audible alarm circuit in one embodiment;
FIG. 2 is a schematic circuit diagram of an embodiment of a sound power amplifier circuit;
FIG. 3 is a schematic electrical diagram of a connector of a wireless communication module in one embodiment;
FIG. 4 is a circuit schematic of a signal transmission circuit in one embodiment;
FIG. 5 is a schematic circuit diagram of an infrared receiving circuit of one embodiment;
FIG. 6 is a circuit schematic of a signal processing circuit in one embodiment;
FIG. 7 is a circuit schematic of an audio driver circuit in one embodiment;
FIG. 8 is a schematic electrical diagram of an optical alarm control circuit in one embodiment;
FIG. 9 is a circuit schematic of a lighting circuit in one embodiment;
fig. 10 is a schematic structural diagram of a regional explosion-proof audible alarm in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "disposed," "one end," "the other end," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the technical problems of complex operation and high installation and arrangement cost of the traditional alarm, in one embodiment, as shown in fig. 1, a regional explosion-proof sound alarm circuit is provided, which comprises a main control chip 11, a wireless power amplifier circuit 13, a signal transmission circuit 15, a signal processing circuit 17, an optical alarm output circuit 19 and a sound drive circuit 21;
the main control chip 11 is connected with the wireless power amplifier circuit 13, the signal transmission circuit 15, the signal processing circuit 17, the light alarm output circuit 19 and the sound driving circuit 21 respectively.
It should be noted that the main control chip is a control center of the regional explosion-proof audible alarm circuit, and in one example, the main control chip is an STM32RCT6 type chip.
The wireless power amplifier circuit adopts the modularized design, and has the wireless communication function and the sound equipment power amplifier function. In one example, the wireless power amplifier circuit comprises a sound power amplifier circuit and a wireless communication module; the connector of the wireless communication module is respectively connected with the sound power amplification circuit and the main control chip; the sound power amplification circuit is used for driving the loudspeaker; the wireless communication module is used for receiving an externally input wireless signal. The sound power amplifier circuit plays a corresponding sound alarm by driving the loudspeaker according to the wireless signal received by the wireless communication module, for example, the dangerous situation is particularly urgent, and the played sound alarm has high frequency and high tone; the dangerous situation is generally urgent, and the played sound alarm has low frequency and low tone; evacuation voice guidance can also be played. The wireless signal includes an alarm signal (e.g., an audio signal), a control signal, and the like, and may be sent by an associated device, or may be sent by a background monitoring device through a server. The wireless communication module may be a 4G (the 4th generation mobile communication technology, fourth generation mobile communication technology) wireless communication module, a 5G (the 5th generation mobile communication technology, fifth generation mobile communication technology) wireless communication module, and the like.
In one example, as shown in fig. 2, the sound power amplifier circuit includes a first TDA7498 chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a resistor R1, a resistor R2, a resistor R3, an inductor L1, and an inductor L2;
one end of the capacitor C1 and one end of the capacitor C2 are connected with the 22 nd pin of the first TDA7498 chip; the other end of the capacitor C1 is connected with a connector of the wireless communication module; the other end of the capacitor C2 is grounded;
one end of the capacitor C3 and one end of the capacitor C4 are connected with the 23 rd pin of the first TDA7498 chip; the other end of the capacitor C3 is connected with a connector of the wireless communication module; the other end of the capacitor C4 is grounded;
one end of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 is connected with the 4th pin and the 5th pin of the first TDA7498 chip and is grounded; the other ends of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are connected with a pin 6 and a pin 7 of the first TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C10 is connected with the 8 th pin and the 9 th pin of the first TDA7498 chip, and the other end is connected with one end of the resistor R1; the other end of the resistor R1 is connected with the No. 2 pin and the No. 3 pin of the first TDA7498 chip;
one end of the inductor L1 is connected with the other end of the resistor R1, and the other end is connected with one end of the capacitor C11; one end of the inductor L2 is connected with one end of the capacitor C10, and the other end is connected with the other end of the capacitor C11;
one end of the capacitor C12 is connected with the other end of the inductor L1, the other end of the capacitor C12 is connected with the other end of the inductor L2 through the capacitor C13, and the other end of the capacitor C12 is grounded;
one end of the resistor R2 is connected with the other end of the inductor L1, and the other end of the resistor R2 is connected with one end of the capacitor C14; the other end of the capacitor C14 is connected with one end of the capacitor C15; the other end of the capacitor C15 is connected with one end of the resistor R3; the other end of the resistor R3 is connected with the other end of the inductor L2; the capacitor C14 is grounded; one end of the resistor R2 and the other end of the resistor R3 are used for connecting a loudspeaker.
It should be noted that, as shown in fig. 3, the connector is a connector of a wireless communication module, the wireless communication module is connected to a main control chip through pins 3, 4, 5, and 6 of the connector, the main control chip controls the reset of the wireless communication module through pin 3, controls the switch of the wireless communication module through pin 4, and performs data interaction with the wireless communication module through pins 5 and 6, so as to implement receiving of a control setting working mode of an external device, sending of a current working state to the external device, and receiving of an alarm signal input by the external device. The wireless communication module is connected with the sound power amplifier circuit through pins 7 and 8 of the connector, specifically, the pin 7 of the connector is connected with the capacitor C1, the pin 8 of the connector is connected with the capacitor C3, and the audio signal received by the wireless communication module is received.
The signal transmission circuit is used for realizing field wired data transmission, for example, receiving wired signals through the signal transmission circuit, realizing wired setting of a working mode, sending a current working state, receiving an alarm signal and the like. In one example, as shown in fig. 4, the signal transmission circuit includes an SP3485 chip, a transistor Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C16, a fuse F1, a fuse F2, a bidirectional TVS (Transient Voltage super) transistor D1, and a bidirectional TVS transistor D2;
an emitter of the triode Q1 is externally connected with a power supply, a base is connected with one end of the resistor R4, and a collector is connected with one end of the resistor R5 and the No. 2 pin and the No. 3 pin of the SP3485 chip; the other end of the resistor R4 is connected with the 4th pin of the SP3485 chip; the other end of the resistor R5 is grounded; the 1 st pin and the 4th pin of the SP3485 chip are connected with the main control chip;
one end of the capacitor C16 is connected with the 8 th pin of the SP3485 chip, and the other end is connected with one end of the resistor R6 and grounded; the other end of the resistor R6 is connected with the 7 th pin of the SP3485 chip;
one end of the resistor R7 is connected with the 6 th pin of the SP3485 chip, and the other end is externally connected with a power supply;
one end of the fuse F1 is connected with the 6 th pin of the SP3485 chip, and the other end is grounded through a bidirectional TVS tube D1; the other end of the fuse F1 is used as an external connection terminal (J4-2 in FIG. 4);
one end of the fuse F2 is connected with the 7 th pin of the SP3485 chip, and the other end is grounded through a bidirectional TVS tube D2; the other end of the fuse F2 is used as an external connection terminal (J4-1 in fig. 4).
Further, in one embodiment, the device further comprises an infrared receiving circuit; the main control chip is connected with the infrared receiving circuit.
The infrared receiving circuit is used for receiving infrared carrier signals and carrying out carrier decoding on the infrared carrier signals, the control over the explosion-proof sound alarm circuit in the application domain is achieved, the effects of live working mode setting, uncovering and working mode flexible setting are achieved, the infrared setting operation is utilized, live uncovering operation is achieved, the setting operation is simplified, the time cost of workers is saved, and the error probability is reduced. In one example, as shown in fig. 5, the infrared receiving circuit includes an infrared receiving tube U1, a capacitor C17, and a resistor R8;
the first end of the infrared receiving tube U1 is connected with one end of the resistor R8, the second end is connected with the main control chip, and the third end is connected with the ground;
the other end of the resistor R8 is connected with one end of the capacitor C17 and is externally connected with a power supply; the other terminal of the capacitor C17 is connected to ground.
Further, in one example, the infrared receiving tube U1 is an HS0038 type infrared receiving tube U1.
The signal processing circuit controls the alarm to alarm when detecting that an alarm signal is input, and in one example, as shown in fig. 6, the signal processing circuit includes a fuse F3, a fuse F4, a piezoresistor RV1, a piezoresistor RV2, a bidirectional TVS tube D3, a bidirectional TVS tube D4, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, and a photocoupler U2;
one end of the fuse F3 is connected with one end of the voltage dependent resistor RV1 and the bidirectional TVS tube D3, and the other end is used as an external connecting terminal (S1 in FIG. 6); the other ends of the piezoresistor RV1 and the bidirectional TVS tube D3 are grounded;
one end of the fuse F4 is connected with one end of the voltage dependent resistor RV2 and the bidirectional TVS tube D4, and the other end is used as an external connecting terminal (S2 in FIG. 6); the other ends of the piezoresistor RV2 and the bidirectional TVS tube D4 are grounded;
one end of the resistor R9 is connected with one end of the fuse F3, and the other end is externally connected with a power supply; one end of the resistor R10 is connected with one end of the fuse F3, and the other end is connected with one end of the fuse F4 and one end of the resistor R11; the other end of the resistor R11 is connected with the first end of a photoelectric coupler U2;
the second end of the photoelectric coupler U2 is connected with the other end of the bidirectional TVS tube D4, the third end is connected with a resistor R12 and a resistor R13, and the fourth end is externally connected with a power supply; the resistor R12 is connected with the main control chip; the other end of the resistor R13 is connected to ground.
It should be noted that the fuse F3, the fuse F4, the varistor RV1, the varistor RV2, the bidirectional TVS tube D3, and the bidirectional TVS tube D4 form a surge protection circuit. In one example, the opto-coupler U2 is a PC817X1CSP9F type opto-coupler. When the signal processing circuit detects that an alarm signal is input, the fuse F3 and the fuse F4 are in short circuit, and the main control chip controls the loudspeaker and the optical alarm output circuit to be electrified for alarming.
The sound driving circuit is another loudspeaker driving circuit of the regional explosion-proof sound alarm, and is switched with a sound power amplifier circuit in the wireless power amplifier circuit through a relay, and the sound driving circuit plays a corresponding sound alarm through driving a loudspeaker according to a signal sent by the main control chip, for example, the dangerous situation is particularly urgent, and the played sound alarm has high frequency and high tone; the dangerous situation is generally urgent, and the played sound alarm has low frequency and low tone; evacuation voice guidance can also be played.
In one example, as shown in fig. 7, the sound driving circuit includes a second TDA7498 chip, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a resistor R14, a resistor R15, a resistor R16, an inductor L3, an inductor L4, and a digital potentiometer;
one end of the capacitor C18 and one end of the capacitor C19 are connected with the 32 nd pin of the second TDA7498 chip; the other end of the capacitor C18 is connected with the 4th pin of the digital potentiometer U3; the other end of the capacitor C19 is grounded; the 3 rd pin, the 5th pin and the 8 th pin of the digital potentiometer U3 are connected with an active chip;
one end of the capacitor C20 and one end of the capacitor C21 are connected with the 33 rd pin of the first TDA7498 chip; the other end of the capacitor C20 is grounded; the other end of the capacitor C21 is grounded;
one end of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 is connected with the 4th pin and the 5th pin of the second TDA7498 chip and is grounded; the other ends of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 are connected with a pin 6 and a pin 7 of the second TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C27 is connected with the 8 th pin and the 9 th pin of the second TDA7498 chip, and the other end is connected with one end of the resistor R14; the other end of the resistor R14 is connected with the No. 2 pin and the No. 3 pin of the second TDA7498 chip;
one end of the inductor L3 is connected with the other end of the resistor R14, and the other end is connected with one end of the capacitor C28; one end of the inductor L4 is connected with one end of the capacitor C27, and the other end is connected with the other end of the capacitor C28;
one end of the capacitor C29 is connected with the other end of the inductor L3, the other end of the capacitor C29 is connected with the other end of the inductor L4 through the capacitor C30, and the other end of the capacitor C29 is grounded;
one end of the resistor R15 is connected with the other end of the inductor L3, and the other end of the resistor R15 is connected with one end of the capacitor C31; the other end of the capacitor C31 is connected with one end of the capacitor C32; the other end of the capacitor C32 is connected with one end of the resistor R16; the other end of the resistor R16 is connected with the other end of the inductor L4; the capacitor C31 is grounded; one end of the resistor R15 and the other end of the resistor R16 are used for connecting a loudspeaker.
The light alarm output circuit is used for outputting light alarms, and the light alarms can emit light effects of various modes under the control of the main control chip, such as a flashing mode light effect and a rotating mode light effect. It is also possible to emit light effects of different colours corresponding to different alarms, for example, in one example the light alarm output circuit comprises light effects that emit two colours.
In one example, the light alarm output circuit includes a light alarm control circuit and a light emitting circuit; one end of the light alarm control circuit is connected with the main control chip, and the other end of the light alarm control circuit is connected with the light-emitting circuit. In one example, there are 6 sets of optical alarm output circuits in the present regional explosion-proof audible alarm circuit. In one example, as shown in fig. 8, the light alarm control circuit includes a resistor R17, a resistor R18, a capacitor C33, and a transistor Q2; one end of the resistor R17 is connected with the main control chip, and the other end is connected with one end of the resistor R18 and one end of the capacitor C33; the other ends of the resistor R18 and the capacitor C33 are grounded; the base of the triode Q2 is connected with the other end of the resistor R17, the collector is connected with the light-emitting circuit, and the emitter is grounded. In one example, as shown in fig. 9, the light emitting circuit includes a plurality of light emitting diodes VD, a resistor R19, and a resistor R20; one end of the resistor R19 and one end of the resistor R20 are connected with the collector of the triode Q2; the other end of the resistor R19 and the other end of the resistor R20 are connected in series with a plurality of light-emitting diodes VD; any two light emitting diodes VD are used as output ends.
In the embodiments of the regional explosion-proof sound alarm circuit of this application, including the main control chip, wireless power amplifier circuit, signal transmission circuit, infrared receiving circuit, signal processing circuit, light alarm output circuit and stereo set drive circuit, wherein, the main control chip connects wireless power amplifier circuit respectively, signal transmission circuit, infrared receiving circuit, signal processing circuit, light alarm output circuit and sound drive circuit, thereby the regional explosion-proof sound alarm circuit of this application can accept the wireless alarm signal of outside transmission to carry out audible and visual alarm, the circuit of having avoided the equipment fixing process is walked the line, the installation is old, usable infrared sets up the operation in addition, the operation of not uncapping in electrified scene has been realized, the setting operation has been simplified, staff's time cost has been saved and the probability of makeing mistakes is reduced.
In one embodiment, the invention further provides a regional explosion-proof audible alarm, which comprises the regional explosion-proof audible alarm circuit in each embodiment of the regional explosion-proof audible alarm circuit, and an alarm shell;
the regional explosion-proof sound alarm circuit is arranged in the alarm shell.
It should be noted that the circuit of the regional explosion-proof audible alarm in this embodiment is the same as the circuit of the regional explosion-proof audible alarm described in the embodiments of the regional explosion-proof audible alarm circuit of this application, and please refer to the embodiments of the regional explosion-proof audible alarm circuit of this application in detail, which is not described herein again.
In one embodiment, as shown in fig. 10, there is also provided a regional explosion-proof audible alarm system, comprising a plurality of the above-mentioned regional explosion-proof audible alarms 101; further comprising a server 103, a backend device 105 and a plurality of associated devices 107;
the regional explosion-proof audible alarm 101 is in one-to-one correspondence with each associated device 107; the explosion-proof audible alarm 101 in each area is respectively connected with the server 103 in a wireless way; the server 103 is connected with the background equipment 105; the association device 107 is a device for sending an alarm signal to the area explosion-proof audible alarm 101.
It should be noted that the associated device may be a detector, a controller, an emergency alarm, an emergency call button, or any device capable of providing an alarm signal in accordance with the electrical characteristics, and when the associated device detects that the hazardous gas exceeds the safety limit, the associated device generates an alarm signal and transmits the alarm signal to the regional explosion-proof audible alarm in a wireless or wired manner.
The regional explosion-proof sound alarm also can be connected with background equipment through a server, the background equipment can directly transmit voice signals, control signals and the like to the regional explosion-proof sound alarm through the server, and in addition, the regional explosion-proof sound alarm can also feed back the current running state, the received alarm signals transmitted by the related equipment and the like to the background equipment through the server, so that the background equipment can track and record the regional explosion-proof sound alarm.
In each embodiment of the regional explosion-proof sound alarm system, the regional explosion-proof sound alarm system can rapidly respond to dangerous conditions and alarm in time, and the safety level of an industrial field is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A regional explosion-proof sound alarm circuit is characterized by comprising a main control chip, a wireless power amplifier circuit, a signal transmission circuit, a signal processing circuit, an optical alarm output circuit and a sound drive circuit;
the main control chip is respectively connected with the wireless power amplifier circuit, the signal transmission circuit, the signal processing circuit, the light alarm output circuit and the sound box driving circuit.
2. The area explosion-proof audible alarm circuit according to claim 1, wherein the wireless power amplifier circuit comprises an audible power amplifier circuit and a wireless communication module;
the connector of the wireless communication module is respectively connected with the sound power amplification circuit and the main control chip; the sound power amplification circuit is used for driving a loudspeaker; the wireless communication module is used for receiving an externally input wireless signal;
the sound power amplifier circuit comprises a first TDA7498 chip, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a resistor R1, a resistor R2, a resistor R3, an inductor L1 and an inductor L2;
one end of the capacitor C1 and one end of the capacitor C2 are connected with the 22 nd pin of the first TDA7498 chip; the other end of the capacitor C1 is connected with a connector of the wireless communication module; the other end of the capacitor C2 is grounded;
one end of the capacitor C3 and one end of the capacitor C4 are connected with the 23 rd pin of the first TDA7498 chip; the other end of the capacitor C3 is connected with a connector of the wireless communication module; the other end of the capacitor C4 is grounded;
one end of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 is connected to the 4th pin and the 5th pin of the first TDA7498 chip and is grounded; the other ends of the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8 and the capacitor C9 are connected with a pin 6 and a pin 7 of the first TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C10 is connected with the 8 th pin and the 9 th pin of the first TDA7498 chip, and the other end of the capacitor C10 is connected with one end of the resistor R1; the other end of the resistor R1 is connected with the No. 2 pin and the No. 3 pin of the first TDA7498 chip;
one end of the inductor L1 is connected with the other end of the resistor R1, and the other end of the inductor L1 is connected with one end of the capacitor C11; one end of the inductor L2 is connected with one end of the capacitor C10, and the other end of the inductor L2 is connected with the other end of the capacitor C11;
one end of the capacitor C12 is connected to the other end of the inductor L1, the other end of the capacitor C12 is connected to the other end of the inductor L2 through the capacitor C13, and the other end of the capacitor C12 is grounded;
one end of the resistor R2 is connected with the other end of the inductor L1, and the other end of the resistor R2 is connected with one end of the capacitor C14; the other end of the capacitor C14 is connected with one end of the capacitor C15; the other end of the capacitor C15 is connected with one end of the resistor R3; the other end of the resistor R3 is connected with the other end of the inductor L2; the capacitor C14 is grounded; one end of the resistor R2 and the other end of the resistor R3 are used for connecting the loudspeaker.
3. The regional explosion-proof audible alarm circuit as claimed in claim 1, wherein the signal transmission circuit comprises an SP3485 chip, a transistor Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C16, a fuse F1, a fuse F2, a bidirectional TVS tube D1 and a bidirectional TVS tube D2;
an emitter of the triode Q1 is externally connected with a power supply, a base is connected with one end of the resistor R4, and a collector is connected with one end of the resistor R5 and the No. 2 pin and the No. 3 pin of the SP3485 chip; the other end of the resistor R4 is connected with the 4th pin of the SP3485 chip; the other end of the resistor R5 is grounded; the 1 st pin and the 4th pin of the SP3485 chip are connected with the main control chip;
one end of the capacitor C16 is connected with the 8 th pin of the SP3485 chip, and the other end of the capacitor C16 is connected with one end of the resistor R6 and grounded; the other end of the resistor R6 is connected with the 7 th pin of the SP3485 chip;
one end of the resistor R7 is connected with the 6 th pin of the SP3485 chip, and the other end of the resistor R7 is externally connected with a power supply;
one end of the fuse F1 is connected to the 6 th pin of the SP3485 chip, and the other end is grounded through the bidirectional TVS tube D1; the other end of the fuse F1 is used as an external connecting terminal;
one end of the fuse F2 is connected to the 7 th pin of the SP3485 chip, and the other end is grounded through the bidirectional TVS tube D2; the other end of the fuse F2 is used as an external connection terminal.
4. The zone explosion proof audible alarm circuit of claim 1, further comprising an infrared receiving circuit;
the main control chip is connected with the infrared receiving circuit.
5. The area explosion-proof audible alarm circuit according to claim 4, characterized in that the infrared receiving circuit comprises an infrared receiving tube U1, a capacitor C17 and a resistor R8;
the first end of the infrared receiving tube U1 is connected with one end of the resistor R8, the second end of the infrared receiving tube U1 is connected with the main control chip, and the third end of the infrared receiving tube U1 is connected with the ground;
the other end of the resistor R8 is connected with one end of the capacitor C17 and is externally connected with a power supply; the other end of the capacitor C17 is grounded.
6. The alarm circuit of claim 5, wherein the infrared receiving tube U1 is HS0038 type U1.
7. The regional explosion-proof audible alarm circuit as claimed in claim 1, wherein the signal processing circuit comprises a fuse F3, a fuse F4, a piezoresistor RV1, a piezoresistor RV2, a bidirectional TVS tube D3, a bidirectional TVS tube D4, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13 and a photocoupler U2;
one end of the fuse F3 is connected with one end of the piezoresistor RV1 and one end of the bidirectional TVS tube D3, and the other end of the fuse F3 is used as an external wiring terminal; the other ends of the piezoresistor RV1 and the bidirectional TVS tube D3 are grounded;
one end of the fuse F4 is connected with one end of the piezoresistor RV2 and one end of the bidirectional TVS tube D4, and the other end of the fuse F4 is used as an external wiring terminal; the other ends of the piezoresistor RV2 and the bidirectional TVS tube D4 are grounded;
one end of the resistor R9 is connected with one end of the fuse F3, and the other end of the resistor R9 is externally connected with a power supply; one end of the resistor R10 is connected with one end of the fuse F3, and the other end is connected with one end of the fuse F4 and one end of the resistor R11; the other end of the resistor R11 is connected with the first end of the photoelectric coupler U2;
the second end of the photoelectric coupler U2 is connected with the other end of the bidirectional TVS tube D4, the third end is connected with the resistor R12 and the resistor R13, and the fourth end is externally connected with a power supply; the resistor R12 is connected with the main control chip; the other end of the resistor R13 is grounded.
8. The regional explosion-proof audible alarm circuit according to any one of claims 1 to 7, wherein the audible driving circuit comprises a second TDA7498 chip, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a resistor R14, a resistor R15, a resistor R16, an inductor L3, an inductor L4 and a digital potentiometer;
one end of the capacitor C18 and one end of the capacitor C19 are connected with a 32 nd pin of the second TDA7498 chip; the other end of the capacitor C18 is connected with the 4th pin of the digital potentiometer U3; the other end of the capacitor C19 is grounded; the No. 3 pin, the No. 5 pin and the No. 8 pin of the digital potentiometer U3 are connected with the active chip;
one end of the capacitor C20 and one end of the capacitor C21 are connected with the 33 rd pin of the first TDA7498 chip; the other end of the capacitor C20 is grounded; the other end of the capacitor C21 is grounded;
one end of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 is connected to the 4th pin and the 5th pin of the second TDA7498 chip and is grounded; the other ends of the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25 and the capacitor C26 are connected with a pin 6 and a pin 7 of the second TDA7498 chip and are externally connected with a power supply;
one end of the capacitor C27 is connected with the 8 th pin and the 9 th pin of the second TDA7498 chip, and the other end of the capacitor C27 is connected with one end of the resistor R14; the other end of the resistor R14 is connected with the No. 2 pin and the No. 3 pin of the second TDA7498 chip;
one end of the inductor L3 is connected with the other end of the resistor R14, and the other end of the inductor L3 is connected with one end of the capacitor C28; one end of the inductor L4 is connected with one end of the capacitor C27, and the other end of the inductor L4 is connected with the other end of the capacitor C28;
one end of the capacitor C29 is connected to the other end of the inductor L3, the other end of the capacitor C29 is connected to the other end of the inductor L4 through the capacitor C30, and the other end of the capacitor C29 is grounded;
one end of the resistor R15 is connected with the other end of the inductor L3, and the other end of the resistor R15 is connected with one end of the capacitor C31; the other end of the capacitor C31 is connected with one end of the capacitor C32; the other end of the capacitor C32 is connected with one end of the resistor R16; the other end of the resistor R16 is connected with the other end of the inductor L4; the capacitor C31 is grounded; one end of the resistor R15 and the other end of the resistor R16 are used for connecting a loudspeaker.
9. An alarm circuit of a regional explosion-proof audible alarm according to any one of claims 1 to 8, further comprising an alarm housing;
the regional explosion-proof sound alarm circuit is arranged in the alarm shell.
10. A zonal explosion proof audible alarm system comprising a plurality of zonal explosion proof audible alarms of claim 9; the system also comprises a server, background equipment and a plurality of associated equipment;
the regional explosion-proof sound alarms are in one-to-one correspondence with the associated equipment in a wireless manner; each regional explosion-proof sound alarm is respectively in wireless connection with the server; the server is connected with the background equipment; and the associated equipment is used for sending an alarm signal to the regional explosion-proof audible alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422331.1U CN212391860U (en) | 2020-07-17 | 2020-07-17 | Regional explosion-proof audible alarm circuit, regional explosion-proof audible alarm and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422331.1U CN212391860U (en) | 2020-07-17 | 2020-07-17 | Regional explosion-proof audible alarm circuit, regional explosion-proof audible alarm and system |
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| Publication Number | Publication Date |
|---|---|
| CN212391860U true CN212391860U (en) | 2021-01-22 |
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| CN202021422331.1U Active CN212391860U (en) | 2020-07-17 | 2020-07-17 | Regional explosion-proof audible alarm circuit, regional explosion-proof audible alarm and system |
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| Country | Link |
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| CN (1) | CN212391860U (en) |
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Address after: 510620 32nd floor, tower a, 191 TIYU West Road, Tianhe District, Guangzhou City, Guangdong Province Patentee after: SINOPEC GUANGZHOU ENGINEERING Co.,Ltd. Patentee after: Shenzhen noan intelligent Co., Ltd Address before: 510620 32nd floor, tower a, 191 TIYU West Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: SINOPEC GUANGZHOU ENGINEERING Co.,Ltd. Patentee before: Shenzhen noan environmental safety Co., Ltd |