Integrated alarm
By integrating signal input, conversion and output modules, the problem of large size of air defense and disaster prevention alarms is solved, and efficient installation and broadcast coverage in a small space are achieved.
Patent Information
- Application Number
- CN202422136551.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Existing air defense and disaster prevention sirens are too large and are not suitable for installation in elevator rooms or equipment rooms on the roofs of high-rise buildings.
An integrated alarm is designed, integrating the signal input module, signal conversion module, alarm output module and power module. By streamlining the internal circuit structure, the integration level is improved and the size is reduced.
The size of the alarm is effectively reduced, making it easy to install in a small space and ensuring the broadcast coverage of the alarm signal.
Smart Images
Figure CN223377798U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of alarm equipment, in particular to an integrated alarm. Background Art
[0002] The air defense and disaster prevention sirens are an important part of the air defense early warning system. They are a device mainly used to issue high-power air defense sirens and warning signals during wartime or when disasters occur.
[0003] Air defense and disaster prevention sirens are typically installed at high points in cities to ensure a wider reach when sounding the alarm. With the development and progress of society and the continuous expansion of cities, sirens have to be installed on the rooftops of newly built high-rise residential buildings to increase coverage. However, due to the limited space available in rooftop elevator rooms or equipment rooms, the size of air defense and disaster prevention sirens is relatively high. Utility Model Content
[0004] The embodiment of the present utility model provides an integrated alarm to reduce the volume and weight of the alarm and reduce the requirements of the alarm on the installation space.
[0005] In a first aspect, an embodiment of the present utility model provides an integrated alarm device, comprising: a signal input module, a signal conversion module, an alarm output module and a power supply module;
[0006] The input end of the signal input module is used for connecting to an external radio system, and the output end of the signal input module is connected to the first end of the signal conversion module;
[0007] The second end of the signal conversion module is connected to the input end of the alarm output module, and the output end of the alarm output module is used to connect to an external speaker;
[0008] The power supply module is connected to the power supply ends of the signal input module, the alarm output module and the signal conversion module respectively.
[0009] In a possible implementation, the alarm output module includes: a voltage follower circuit, a differential amplifier circuit, and at least one power amplifier circuit;
[0010] The first end of the voltage follower circuit is connected to the second end of the signal conversion module, and the second end of the voltage follower circuit is connected to the input end of the differential amplifier circuit;
[0011] The output end of the differential amplifier circuit is connected to the input end of the at least one power amplifier circuit, and the output end of the at least one power amplifier circuit is used for connecting to an external speaker.
[0012] In a possible implementation, the differential amplifier circuit includes: a first resistor, a second resistor, a first operational amplifier, a third resistor, a fourth resistor, a first capacitor, a second operational amplifier, and a fifth resistor;
[0013] One end of the first resistor is connected to the second end of the voltage follower circuit, and the other end of the first resistor is respectively connected to one end of the second resistor and the first end of the first operational amplifier;
[0014] The other end of the second resistor is grounded;
[0015] The second end of the first operational amplifier is connected to one end of the third resistor and one end of the fourth resistor respectively;
[0016] The ground terminal of the first operational amplifier is respectively connected to the power supply module and the positive electrode of the first capacitor, and the negative electrode of the first capacitor is grounded;
[0017] The third terminal of the first operational amplifier is respectively connected to the other end of the fourth resistor and the first input terminal of the at least one power amplifier circuit;
[0018] The other end of the third resistor is respectively connected to the first end of the second operational amplifier and one end of the fifth resistor;
[0019] The second terminal of the second operational amplifier is grounded, and the third terminal of the second operational amplifier is respectively connected to the other end of the fifth resistor and the second input terminal of the at least one power amplifier circuit.
[0020] In a possible implementation, the voltage follower circuit includes: a third operational amplifier and a sixth resistor;
[0021] The first end of the third operational amplifier is respectively connected to one end of the sixth resistor and the second end of the signal conversion module;
[0022] The second end of the third operational amplifier is respectively connected to the third end of the third operational amplifier and the input end of the differential amplifier circuit;
[0023] The other end of the seventh resistor is connected to the power module.
[0024] In a possible implementation, the alarm output module further includes: a switch circuit respectively connected to the voltage follower circuit, the differential amplifier circuit, and the signal conversion module;
[0025] The first end of the switch circuit is connected to the second end of the voltage follower circuit, the second end of the switch circuit is connected to the third end of the signal conversion module, and the third end of the switch circuit is connected to the input end of the differential amplifier circuit.
[0026] In a possible implementation, the switch circuit includes: a switch switch, a seventh resistor, and a second capacitor;
[0027] The first pin of the switch is connected to the second end of the voltage follower circuit;
[0028] The second pin of the switch is connected to the third terminal of the signal conversion module;
[0029] The third pin of the switch is connected to one end of the seventh resistor and the positive electrode of the second capacitor respectively;
[0030] The other end of the seventh resistor is connected to the power module;
[0031] The negative electrode of the second capacitor is connected to the input end of the differential amplifier circuit.
[0032] In a possible implementation, the further comprising: an output detection module connected to the alarm output module and the power supply module;
[0033] The output detection module includes: a sampling circuit and a detection circuit;
[0034] The input end of the sampling circuit is connected to the output end of the alarm output module, and the output end of the sampling circuit is connected to the input end of the detection circuit;
[0035] The output end of the detection circuit is used to output an alarm detection signal;
[0036] The power supply module is connected to the power supply end of the detection circuit.
[0037] In a possible implementation, the detection circuit includes: at least one signal processing subcircuit and a signal determination subcircuit;
[0038] The input end of the at least one signal processing sub-circuit is connected to the output end of the sampling circuit, and the output end of the at least one signal processing sub-circuit is connected to the input end of the signal judgment sub-circuit;
[0039] The output end of the signal judgment sub-circuit is used to output an alarm detection signal.
[0040] In a possible implementation, the signal processing subcircuit includes: a rectifier, an eighth resistor, a first diode, a ninth resistor, a third capacitor, and a second diode;
[0041] The input end of the rectifier is connected to the output end of the sampling circuit, and the output end of the rectifier is connected to one end of the eighth resistor;
[0042] The other end of the eighth resistor is respectively connected to the cathode of the first diode, one end of the ninth resistor, the anode of the third capacitor, and the cathode of the second diode;
[0043] The anode of the first diode, the other end of the ninth resistor, and the cathode of the third capacitor are all grounded;
[0044] The anode of the second diode is connected to the input end of the signal judgment sub-circuit.
[0045] In a possible implementation, the signal determination subcircuit includes: a tenth resistor, an eleventh resistor, a third diode, and a switch tube;
[0046] One end of the tenth resistor, one end of the eleventh resistor, and the anode of the third diode are all connected to the output end of the signal processing sub-circuit;
[0047] The other end of the tenth resistor is connected to the power module, and the other end of the eleventh resistor is grounded;
[0048] The cathode of the third diode is connected to the gate of the switch tube, the source of the switch tube is grounded, and the drain of the switch tube is used to output an alarm detection signal.
[0049] An embodiment of the present invention provides an integrated alarm, comprising a signal input module, a signal conversion module, an alarm output module, and a power supply module. The input end of the signal input module is used to connect to an external radio system, and the output end of the signal input module is connected to the first end of the signal conversion module. The second end of the signal conversion module is connected to the input end of the alarm output module, and the output end of the alarm output module is used to connect to an external speaker. The power supply module is connected to the power supply ends of the signal input module, the alarm output module, and the signal conversion module, respectively. By integrating the signal input module, the signal conversion module, the alarm output module, and the power supply module, this embodiment can effectively streamline the internal circuit structure of the alarm, improve the alarm's integration, and reduce the size of the alarm to facilitate practical installation and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0051] Figure 1 This is a structural diagram of an integrated alarm provided by an embodiment of the present utility model;
[0052] Figure 2This is a schematic diagram of the internal circuit of an alarm output module provided by an embodiment of the present utility model;
[0053] Figure 3 This is a schematic diagram of the internal circuit of an alarm output module provided by another embodiment of the present invention;
[0054] Figure 4 This is a structural diagram of an integrated alarm provided by another embodiment of the present utility model;
[0055] Figure 5 This is a circuit diagram of a detection circuit provided by an embodiment of the present utility model. DETAILED DESCRIPTION
[0056] To help those skilled in the art better understand this solution, the following will clearly describe the technical solutions in the embodiments of this solution in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of this solution, not all of it. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of this solution.
[0057] Throughout the specification, claims, and accompanying figures of this solution, the term "including" and any variations thereof mean "including, but not limited to," and are intended to cover non-exclusive inclusions and are not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish between different objects, not to describe a specific order.
[0058] Air defense and disaster prevention sirens are typically installed in elevator rooms or equipment rooms on the rooftops of high-rise buildings to broadcast the alarm sound over a wide area. However, the interior space of these rooms is relatively small, and the sirens are too bulky to be practically installed.
[0059] In order to reduce the size of the alarm, this embodiment provides an integrated alarm including a signal input module, a signal conversion module, an alarm output module, and a power supply module. The input end of the signal input module is used to connect to an external radio system, and the output end of the signal input module is connected to the first end of the signal conversion module. The second end of the signal conversion module is connected to the input end of the alarm output module, and the output end of the alarm output module is used to connect to an external speaker. The power supply module is connected to the power supply ends of the signal input module, the alarm output module, and the signal conversion module, respectively. By integrating the signal input module, signal conversion module, alarm output module, and power supply module, this embodiment can effectively streamline the internal circuit structure of the alarm, improve the alarm's integration, and reduce the alarm's size for ease of installation and application.
[0060] The following is a detailed description of the implementation of the present invention with reference to the accompanying drawings:
[0061] Figure 1 This is a schematic diagram of the structure of an integrated alarm provided by an embodiment of the present utility model. Figure 1 The integrated alarm includes: a signal input module 11, a signal conversion module 12, an alarm output module 13 and a power supply module 14.
[0062] The input end of the signal input module 11 is used to connect to an external radio system, and the output end of the signal input module 11 is connected to the first end of the signal conversion module 12;
[0063] The second end of the signal conversion module 12 is connected to the input end of the alarm output module 13, and the output end of the alarm output module 13 is used to connect to an external speaker;
[0064] The power supply module 14 is connected to the power supply terminals of the signal input module 11 , the alarm output module 12 and the signal conversion module 13 respectively.
[0065] Here, in scenarios where an alarm needs to be sent, the user can input an alarm command through the radio system. The alarm command is typically a digital signal. The signal input module receives the alarm command, performs level conversion on it, and inputs the converted alarm command to the signal conversion module 12. The signal conversion module 12 converts the converted alarm command into an analog signal and inputs it to the alarm output module for alarm output.
[0066] This embodiment can effectively simplify the circuit structure of the alarm, improve the integration of the alarm, and reduce the size of the alarm by integrating the signal input module, signal conversion module, and alarm output module connected in sequence.
[0067] Optional, see Figure 2 The alarm output module includes: a voltage follower circuit 131, a differential amplifier circuit 132 and at least one power amplifier circuit 133.
[0068] A first end of the voltage follower circuit 131 is connected to the second end of the signal conversion module, and a second end of the voltage follower circuit 131 is connected to the input end of the differential amplifier circuit 132;
[0069] The output end of the differential amplifier circuit 132 is connected to the input end of at least one power amplifier circuit 133 , and the output end of at least one power amplifier circuit 133 is used to connect to an external speaker.
[0070] Here, the voltage follower circuit 131 can enhance the analog signal output by the signal conversion module to improve signal quality. The differential amplifier circuit 132 can convert the single-ended analog signal output by the voltage follower circuit 131 into a differential signal. The power amplifier circuit 133 amplifies the differential signal and outputs it to the speaker, thereby achieving the purpose of broadcasting the alarm.
[0071] The output end of the differential amplifier circuit can be connected to multiple power amplifier circuits, and each power amplifier circuit is correspondingly connected to a loudspeaker, thereby achieving the purpose of multi-location broadcasting.
[0072] The alarm output module in this embodiment uses a voltage follower circuit, a differential amplifier circuit and a power amplifier circuit connected in sequence, which can not only enhance the signal quality and amplify the signal power, thereby achieving the purpose of high-quality output of the alarm signal, but also effectively simplify the circuit structure, thereby reducing the size of the alarm.
[0073] Optional, see Figure 2 The differential amplifier circuit 132 includes: a first resistor R1, a second resistor R2, a first operational amplifier Op1, a third resistor R3, a fourth resistor R4, a first capacitor C1, a second operational amplifier Op2 and a fifth resistor R5.
[0074] One end of the first resistor R1 is connected to the second end of the voltage follower circuit 131 , and the other end of the first resistor R1 is respectively connected to one end of the second resistor R2 and the first end of the first operational amplifier Op1 ;
[0075] The other end of the second resistor R2 is grounded;
[0076] The second end of the first operational amplifier Op1 is connected to one end of the third resistor R3 and one end of the fourth resistor R4 respectively;
[0077] The ground terminal of the first operational amplifier Op1 is connected to the power module and the positive electrode of the first capacitor C1 respectively, and the negative electrode of the first capacitor C1 is grounded;
[0078] The third terminal of the first operational amplifier Op1 is respectively connected to the other end of the fourth resistor R4 and the first input terminal of at least one power amplifier circuit;
[0079] The other end of the third resistor is connected to the first end of the second operational amplifier Op2 and one end of the fifth resistor R5 respectively;
[0080] A second terminal of the second operational amplifier Op2 is grounded, and a third terminal of the second operational amplifier Op2 is respectively connected to the other end of the fifth resistor R5 and a second input terminal of at least one power amplifier circuit.
[0081] In addition, the power supply terminal of the first operational amplifier and the power supply terminal of the second operational amplifier are connected to the power supply module, and the ground terminal of the first operational amplifier is grounded. Figure 2 The power supply module can provide a +12V voltage to the power supply terminal of the first operational amplifier and the power supply terminal of the second operational amplifier. The power supply module can also provide a -5V voltage to the ground terminal of the first operational amplifier.
[0082] Here, the differential amplifier circuit performs differential processing on the single-ended signal output by the voltage follower current 131 by using the first operational amplifier and the second operational amplifier, thereby converting the single-ended signal into a differential signal for easy recognition and playback by the speaker.
[0083] Optional, see Figure 2 , the voltage follower circuit 131 includes: a third operational amplifier Op3 and a sixth resistor R6;
[0084] A first terminal of the third operational amplifier Op3 is respectively connected to one terminal of the sixth resistor R6 and a second terminal of the signal conversion module;
[0085] The second terminal of the third operational amplifier Op3 is connected to the third terminal of the third operational amplifier Op3 and the input terminal of the differential amplifier circuit 132 respectively;
[0086] The other end of the sixth resistor R6 is connected to the power module.
[0087] In addition, the power supply terminal of the third operational amplifier is connected to the power supply module, and the ground terminal of the third operational amplifier is grounded. Figure 2 The power supply module can provide a +12V voltage for the power supply terminal of the third operational amplifier, and the power supply module can also provide a +1V pull-up voltage for the other end of the sixth resistor R6 to enhance the signal.
[0088] Here, the voltage follower circuit 131 can perform signal amplification on the analog signal output by the signal conversion module 12, thereby improving the signal quality.
[0089] Optional, see Figure 3 , the alarm output module further includes: a switch circuit 134 connected to the voltage follower circuit 131, the differential amplifier circuit 132 and the signal conversion module respectively;
[0090] A first end of the switch circuit 134 is connected to a second end of the voltage follower circuit 131 , a second end of the switch circuit 134 is connected to a third end of the signal conversion module, and a third end of the switch circuit 134 is connected to an input end of the differential amplifier circuit 132 .
[0091] The switch circuit here can be simply understood as a hardware switch that controls the output state of the alarm output module. The signal conversion module can output an enable level based on the alarm command it receives. The second terminal of the switch circuit 134 is connected to the third terminal of the signal conversion module to receive the enable level. Based on the enable level, the switch circuit 134 closes the switch circuit, allowing the alarm output module to normally output the alarm signal. However, if the signal conversion module 12 does not receive the alarm command, the signal conversion module will not output the enable level. In this case, the switch circuit is disconnected, and the alarm output module cannot output the alarm signal.
[0092] By providing the switch circuit, this embodiment can ensure that the alarm output module correctly outputs the alarm signal, thereby avoiding the problem of the alarm output module outputting an erroneous signal due to interference from other crosstalk signals when no alarm command is received.
[0093] Optional, see Figure 3 The switch circuit includes 134: a switch U1, a seventh resistor R7 and a second capacitor C2.
[0094] The first pin of the switch U1 is connected to the second end of the voltage follower circuit 131;
[0095] The second pin of the switch U1 is connected to the third terminal of the signal conversion module;
[0096] The third pin of the switch U1 is connected to one end of the seventh resistor R7 and the positive electrode of the second capacitor C2 respectively;
[0097] The other end of the seventh resistor R7 is connected to the power module;
[0098] The negative electrode of the second capacitor C2 is connected to the input terminal of the differential amplifier circuit 132 .
[0099] The signal conversion module 12 can output an enable level based on the received alarm command. After the second pin of the switch U1 receives the enable level, the first pin and the third pin of the switch U1 are connected, thereby connecting the voltage follower circuit and the differential amplifier circuit, so that the alarm output module can normally output the alarm signal.
[0100] However, if the second pin of the switch U1 does not receive an enable level, the first and third pins of the switch are disconnected, thereby disconnecting the voltage follower circuit and the differential amplifier circuit, thereby disabling the alarm output module from outputting a signal. Here, the switch can be a bidirectional analog switch chip, such as a CD4066 chip.
[0101] By providing a switch circuit in this embodiment, the problem of the alarm device mistakenly outputting an alarm signal without receiving an alarm command due to interference from other crosstalk signals can be avoided.
[0102] Optional, see Figure 4 , the above-mentioned integrated alarm further includes: an output detection module 15 connected to the alarm output module 13 and the power supply module 14 respectively;
[0103] The output detection module 15 includes: a sampling circuit 151 and a detection circuit 152;
[0104] The input end of the sampling circuit 151 is connected to the output end of the alarm output module 13 , and the output end of the sampling circuit 151 is connected to the input end of the detection circuit 152 ;
[0105] The output terminal of the detection circuit 152 is used to output an alarm detection signal;
[0106] The power module is connected to the power supply end of the detection circuit 152 .
[0107] Here, the output detection circuit 15 generates an alarm detection signal according to the signal output from the output terminal of the alarm output module 13, which is used to indicate whether the alarm output module outputs normally.
[0108] The sampling circuit is connected to the alarm output module and is used to sample the signal output by the alarm output module to obtain a sampled signal. The detection circuit detects the sampled signal to determine whether the alarm output module outputs normally.
[0109] In this embodiment, the sampling circuit may include a current transformer, through which the current of the signal output by the alarm output module can be sampled to obtain a sampling signal.
[0110] The alarm output module may include multiple power amplifier circuits, and correspondingly, the output detection module may include multiple sampling circuits. Each power amplifier circuit may be connected to a corresponding sampling circuit for sampling the output of the power amplifier circuit.
[0111] Optional, see Figure 5 The detection circuit 152 includes: at least one signal processing sub-circuit 1521 and a signal judgment sub-circuit 1522.
[0112] The input end of at least one signal processing sub-circuit 1521 is connected to the output end of the sampling circuit, and the output end of at least one signal processing sub-circuit is connected to the input end of the signal judgment sub-circuit;
[0113] The output terminal of the signal determination sub-circuit 1522 is used to output an alarm detection signal.
[0114] Here, the input end of each signal processing sub-circuit is connected to the output end of each sampling circuit. The output end of each signal processing sub-circuit is connected to the input end of the signal judgment sub-circuit. The signal judgment sub-circuit judges and detects the output signal of each signal processing sub-circuit.
[0115] Optional, see Figure 5 , the signal processing sub-circuit 1521 includes: a rectifier B1, an eighth resistor R8, a first diode D1, a ninth resistor R9, a third capacitor C3, and a second diode D2;
[0116] The input end of the rectifier B1 is connected to the output end of the sampling circuit, and the output end of the rectifier B1 is connected to one end of the eighth resistor R8;
[0117] The other end of the eighth resistor R8 is respectively connected to the cathode of the first diode D1, one end of the ninth resistor R9, the anode of the third capacitor C3, and the cathode of the second diode D2;
[0118] The anode of the first diode D1, the other end of the ninth resistor R9, and the cathode of the third capacitor C3 are all grounded;
[0119] The anode of the second diode D2 is connected to the input end of the signal determination sub-circuit.
[0120] Here, the rectifier can rectify the AC signal output by the sampling circuit and output a DC signal. The eighth resistor R8 limits the current of the DC signal, the first diode D1 stabilizes the DC signal, and the third capacitor C3 filters the DC signal.
[0121] Optional, see Figure 5 The signal determination sub-circuit 1522 includes: a tenth resistor R10, an eleventh resistor R11, a third diode D3 and a switch tube Q1;
[0122] One end of the tenth resistor R10, one end of the eleventh resistor R11, and the anode of the third diode D3 are all connected to the output end of the signal processing sub-circuit;
[0123] The other end of the tenth resistor R10 is connected to the power module, and the other end of the eleventh resistor R11 is grounded;
[0124] The cathode of the third diode D3 is connected to the gate of the switch tube Q1 , the source of the switch tube is grounded, and the drain of the switch tube Q1 is used to output an alarm detection signal.
[0125] Here, the alarm detection signal can be a high-level signal or a low-level signal. When the alarm output module normally outputs the alarm signal, the sampling circuit samples the alarm signal and inputs it into the signal processing subcircuit. At this time, the cathode of the second diode D2 in the signal processing subcircuit is at a high level. The voltage VCC output by the power module is divided down to ground by R10 and R11. At this time, the gate voltage of the switching tube is at a high level, the switching tube is normally conducting, and the drain of the switching tube outputs a low level.
[0126] When any power amplifier circuit in the alarm output module fails to output an alarm signal, the cathode of the first diode in the signal processing subcircuit is at a low level. At this point, R11 and R9 are connected in parallel, and the power module's output voltage, VCC, is divided down to ground via R10, R9, and R11. At this point, the gate voltage of the switching tube decreases, closing the switch and outputting a high level at the drain.
[0127] In this embodiment, whether the alarm output module is outputting normally can be determined based on the level state of the alarm detection signal, so that the user can be reminded in time when the alarm output module cannot output normally.
[0128] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. An integrated alarm, characterized in that: include: Signal input module, signal conversion module, alarm output module and power supply module; The input end of the signal input module is used for connecting to an external radio system, and the output end of the signal input module is connected to the first end of the signal conversion module; The second end of the signal conversion module is connected to the input end of the alarm output module, and the output end of the alarm output module is used to connect to an external speaker; The power supply module is connected to the power supply ends of the signal input module, the alarm output module and the signal conversion module respectively.
2. The integrated alarm according to claim 1, characterized in that: The alarm output module includes: a voltage follower circuit, a differential amplifier circuit and at least one power amplifier circuit; The first end of the voltage follower circuit is connected to the second end of the signal conversion module, and the second end of the voltage follower circuit is connected to the input end of the differential amplifier circuit; The output end of the differential amplifier circuit is connected to the input end of the at least one power amplifier circuit, and the output end of the at least one power amplifier circuit is used for connecting to an external speaker.
3. The integrated alarm according to claim 2, characterized in that: The differential amplifier circuit includes: a first resistor, a second resistor, a first operational amplifier, a third resistor, a fourth resistor, a first capacitor, a second operational amplifier and a fifth resistor; One end of the first resistor is connected to the second end of the voltage follower circuit, and the other end of the first resistor is respectively connected to one end of the second resistor and the first end of the first operational amplifier; The other end of the second resistor is grounded; The second end of the first operational amplifier is connected to one end of the third resistor and one end of the fourth resistor respectively; The ground terminal of the first operational amplifier is respectively connected to the power supply module and the positive electrode of the first capacitor, and the negative electrode of the first capacitor is grounded; The third terminal of the first operational amplifier is respectively connected to the other end of the fourth resistor and the first input terminal of the at least one power amplifier circuit; The other end of the third resistor is respectively connected to the first end of the second operational amplifier and one end of the fifth resistor; The second terminal of the second operational amplifier is grounded, and the third terminal of the second operational amplifier is respectively connected to the other end of the fifth resistor and the second input terminal of the at least one power amplifier circuit.
4. The integrated alarm according to claim 2, characterized in that: The voltage follower circuit includes: a third operational amplifier and a sixth resistor; The first end of the third operational amplifier is respectively connected to one end of the sixth resistor and the second end of the signal conversion module; The second end of the third operational amplifier is respectively connected to the third end of the third operational amplifier and the input end of the differential amplifier circuit; The other end of the sixth resistor is connected to the power module.
5. The integrated alarm device according to claim 2, characterized in that: The alarm output module further includes: a switch circuit respectively connected to the voltage follower circuit, the differential amplifier circuit and the signal conversion module; The first end of the switch circuit is connected to the second end of the voltage follower circuit, the second end of the switch circuit is connected to the third end of the signal conversion module, and the third end of the switch circuit is connected to the input end of the differential amplifier circuit.
6. The integrated alarm device according to claim 5, characterized in that: The switch circuit includes: a switch switch, a seventh resistor and a second capacitor; The first pin of the switch is connected to the second end of the voltage follower circuit; The second pin of the switch is connected to the third terminal of the signal conversion module; The third pin of the switch is connected to one end of the seventh resistor and the positive electrode of the second capacitor respectively; The other end of the seventh resistor is connected to the power module; The negative electrode of the second capacitor is connected to the input end of the differential amplifier circuit.
7. The integrated alarm according to any one of claims 1 to 6, characterized in that: Also includes: an output detection module connected to the alarm output module and the power supply module; The output detection module includes: a sampling circuit and a detection circuit; The input end of the sampling circuit is connected to the output end of the alarm output module, and the output end of the sampling circuit is connected to the input end of the detection circuit; The output end of the detection circuit is used to output an alarm detection signal; The power supply module is connected to the power supply end of the detection circuit.
8. The integrated alarm according to claim 7, characterized in that: The detection circuit includes: at least one signal processing subcircuit and a signal judgment subcircuit; The input end of the at least one signal processing sub-circuit is connected to the output end of the sampling circuit, and the output end of the at least one signal processing sub-circuit is connected to the input end of the signal judgment sub-circuit; The output end of the signal judgment sub-circuit is used to output an alarm detection signal.
9. The integrated alarm device according to claim 8, characterized in that: The signal processing subcircuit includes: a rectifier, an eighth resistor, a first diode, a ninth resistor, a third capacitor, and a second diode; The input end of the rectifier is connected to the output end of the sampling circuit, and the output end of the rectifier is connected to one end of the eighth resistor; The other end of the eighth resistor is respectively connected to the cathode of the first diode, one end of the ninth resistor, the anode of the third capacitor, and the cathode of the second diode; The anode of the first diode, the other end of the ninth resistor, and the cathode of the third capacitor are all grounded; The anode of the second diode is connected to the input end of the signal judgment sub-circuit.
10. The integrated alarm according to claim 8 or 9, characterized in that: The signal judgment subcircuit includes: a tenth resistor, an eleventh resistor, a third diode and a switch tube; One end of the tenth resistor, one end of the eleventh resistor, and the anode of the third diode are all connected to the output end of the signal processing sub-circuit; The other end of the tenth resistor is connected to the power module, and the other end of the eleventh resistor is grounded; The cathode of the third diode is connected to the gate of the switch tube, the source of the switch tube is grounded, and the drain of the switch tube is used to output an alarm detection signal.