Elevator emergency alarm devices and systems

Abstract

The present invention provides an elevator emergency alarm device and system. The processor of the elevator emergency alarm device is connected to a wireless communication module, and a data communication link with a cloud platform is established through the wireless communication module; the call module is connected to the communication line or call circuit of the elevator call system, and the processor detects the alarm signal of the communication line or call circuit through the call module. When the alarm signal is detected, the alarm information is sent to the cloud platform or a preset rescuer through the wireless communication module, and the voice information sent by the cloud platform or the preset rescuer is sent to the elevator call system through the call module to realize the communication between the trapped person and the rescuer. The present invention does not require rewiring, has low cost, and can send alarm information to multiple preset rescuers, eliminating the interference of unattended duty, and utilizes the characteristics of cloud platform calls, does not require real-name authentication, and protects personal privacy.

Description

Technical Field

[0001] The invention relates to the field of elevator safety, and in particular to an elevator emergency alarm device system. Background Art

[0002] With the continuous development of technology, the safety level of elevators is also improving year by year. However, as a special mechatronic equipment, elevators are bound to have equipment failures and trap people. However, due to various reasons, people fail to seek help in time. According to the "Rules for Elevator Supervision and Periodic Inspection - Traction and Forced Drive Elevators" (TSG T7001-2009), elevators must be equipped with emergency alarm devices, which use intercom systems to maintain continuous contact with rescue services. In the current settings, people generally use the emergency rescue bells set in the elevator to call for help, or install third-party emergency rescue devices to contact the outside world, but they often encounter the following problems: (1) They can only report to the property duty room, which is prone to the problem of no one on duty to answer the alarm information; (2) For additional elevators, it is necessary to connect the elevator alarm system to the duty room through high-cost wiring; (3) Communication phone cards require real-name authentication, which is difficult to achieve for public elevators. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention proposes an elevator emergency alarm device and system, which can detect the alarm signal of the original communication system of the elevator, and alarm through a cloud platform according to the alarm signal, without the need for rewiring, with low cost, and can send alarm information to preset rescue personnel, eliminating the interference of unmanned duty. By utilizing the characteristics of cloud platform calls, no real-name authentication is required, thus protecting personal privacy.

[0004] To solve the above problems, a technical solution adopted by the present invention is: an elevator emergency alarm device, which includes a processor, a wireless communication module and a call module; the processor is connected to the wireless communication module, and a data communication link with a cloud platform is established through the wireless communication module; the call module is connected to the communication line or call circuit of the elevator call system, and the processor detects the alarm signal of the communication line or call circuit through the call module, and sends an alarm message to the cloud platform or a preset rescuer through the wireless communication module when the alarm signal is detected, and sends the voice message sent by the cloud platform or the preset rescuer to the elevator call system through the call module to realize communication between the trapped person and the rescuer.

[0005] Furthermore, the call module includes a call port, and the call port includes an L port and an R port, and the L port and the R port are respectively connected to the L signal line and the R signal line of the communication line.

[0006] Furthermore, the call module also includes a protection circuit, which is connected to the call port and the call circuit respectively, and is used to perform impedance matching with the communication line and protect the internal circuit of the elevator emergency alarm device.

[0007] Furthermore, the call module also includes a call processing circuit, which is connected to the protection circuit, the wireless communication module, and the voice receiving circuit and voice playing circuit of the elevator call system, and the call processing circuit is used to control the volume and process calls and transmissions.

[0008] Furthermore, the call module also includes a voice circuit, which is connected to the call processing circuit and the processor respectively. When the processor receives an alarm signal, the voice circuit sends a soothing voice to the elevator call system through the call processor circuit to soothe the trapped persons.

[0009] Furthermore, the elevator emergency alarm device also includes a status display module, which is connected to the processor and displays the working status of the elevator emergency alarm device through the status display module.

[0010] Furthermore, the elevator emergency alarm device includes a clock module and a power supply module;

[0011] The clock module is connected to the processor, and the clock module is used to pass a clock signal and a reference signal to the processor;

[0012] The elevator emergency alarm device also includes a power supply module, which is connected to the processor and supplies power to the elevator emergency alarm device through the power supply.

[0013] Furthermore, the elevator emergency alarm device also includes a power supply module, which is connected to the processor and supplies power to the elevator emergency alarm device through the power supply.

[0014] Furthermore, the power module includes a power management circuit, a conversion circuit, a battery assembly, and a voltage stabilizer;

[0015] The power management circuit is connected to the conversion circuit and the processor respectively, and the conversion circuit converts AC power into DC power, and transmits the DC power to the processor through the power management circuit;

[0016] The battery assembly is connected to the power management circuit, the battery assembly stores the electric energy input by the power management circuit, and supplies power to the elevator emergency alarm device when the conversion circuit is powered off;

[0017] The voltage stabilizer is connected to the power management circuit, and receives a voltage input from the power management circuit, and converts the voltage into a preset voltage to supply power to the elevator emergency alarm device.

[0018] Based on the same inventive concept, the present invention also proposes an elevator emergency alarm system, which includes: a cloud platform and the elevator emergency alarm device as described above; the cloud platform is connected to the elevator emergency alarm device, the cloud platform receives the alarm signal sent by the elevator emergency alarm device, sends alarm information to the preset rescue personnel according to the alarm signal, and sends the voice information sent by the preset rescue personnel to the elevator emergency alarm device, wherein the alarm information includes at least one of the alarm signal, the location of the elevator, the name of the building, and the model of the elevator.

[0019] Compared with the prior art, the beneficial effects of the present invention are: it can detect the alarm signal of the original communication system of the elevator, and alarm through the cloud platform according to the alarm signal, without the need for rewiring, with low cost, and can send the alarm information to multiple preset rescue personnel, eliminating the interference of unmanned duty, and utilizing the characteristics of cloud platform calls, without the need for real-name authentication, thus protecting personal privacy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of an elevator emergency alarm device of the present invention;

[0021] Figure 2 It is a framework diagram of an embodiment of an alarm implementation method of an elevator emergency alarm device of the present invention;

[0022] Figure 3 A topological diagram of an embodiment of an alarm implementation method of an elevator emergency alarm device of the present invention;

[0023] Figure 4 A hardware framework diagram of an embodiment of an elevator emergency alarm device of the present invention;

[0024] Figure 5 A circuit diagram of an embodiment of a call module of an elevator emergency alarm device of the present invention;

[0025] Figure 6 A circuit diagram of a processor and a voice circuit of an elevator emergency alarm device according to the present invention;

[0026] Figure 7 A circuit diagram of an embodiment of a 2G communication component of an elevator emergency alarm device of the present invention;

[0027] Figure 8 A circuit diagram of an embodiment of a 4G communication component of an elevator emergency alarm device of the present invention;

[0028] Fig. 9 A circuit diagram of an embodiment of a power module of an elevator emergency alarm device of the present invention;

[0029] Fig.10 It is a structural diagram of an embodiment of an elevator emergency alarm system of the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] Please refer to the instruction manual Figure 1-9 ,in, Figure 1 It is a structural diagram of an embodiment of an elevator emergency alarm device of the present invention; Figure 2 It is a framework diagram of an embodiment of an alarm implementation method of an elevator emergency alarm device of the present invention; Figure 3 A topological diagram of an embodiment of an alarm implementation method of an elevator emergency alarm device of the present invention; Figure 4 A hardware framework diagram of an embodiment of an elevator emergency alarm device of the present invention; Figure 5 A circuit diagram of an embodiment of a call module of an elevator emergency alarm device of the present invention; Figure 6 A circuit diagram of a processor and a voice circuit of an elevator emergency alarm device according to the present invention; Figure 7 A circuit diagram of an embodiment of a 2G communication component of an elevator emergency alarm device of the present invention; Figure 8 A circuit diagram of an embodiment of a 4G communication component of an elevator emergency alarm device of the present invention; Fig. 9 FIG. 1 is a circuit diagram of an embodiment of a power module of an elevator emergency alarm device of the present invention. Figure 1-9 The elevator emergency alarm device of the present invention is described in detail.

[0032] In this embodiment, the elevator emergency alarm device includes a processor, a wireless communication module and a call module; the processor is connected to the wireless communication module, and a data communication link with the cloud platform is established through the wireless communication module; the call module is connected to the communication line or call circuit of the elevator call system, and the processor detects the alarm signal of the communication line or call circuit through the call module. When the alarm signal is detected, the processor sends an alarm message to the cloud platform or a preset rescuer through the wireless communication module, and sends the voice message sent by the cloud platform or the preset rescuer to the elevator call system through the call module to realize communication between the trapped person and the rescuer.

[0033] In this embodiment, the elevator communication system is the original wired communication system on the elevator, and the elevator emergency alarm device is connected to the communication line or call circuit of the wired communication system to obtain and detect the alarm signal sent by the trapped person through the wired communication system.

[0034] In this embodiment, the processor may be a single chip microcomputer, an MCU, a SOC, or other devices that can receive an alarm signal and perform an alarm operation according to the alarm signal.

[0035] In a specific embodiment, the processor is an MCU. After the elevator emergency alarm device is started, the MCU first initializes the 2G / 4G communication module and establishes a data communication link with the cloud platform, and maintains a long-term data communication connection with the cloud platform after passing the authentication of the cloud platform.

[0036] In this embodiment, the call module includes a call port, which includes an L port and an R port, and the L port and the R port are respectively connected to an L signal line and an R signal line in a communication line for transmitting voice signals.

[0037] The communication line includes a two-wire communication line or a four-wire communication line. When the communication line is a four-wire communication line, the G port of the call port is connected to the ground wire of the four-wire communication line.

[0038] In this embodiment, for a 2-wire elevator wired call system, the processor controls the protection circuit to perform AC and DC separation processing and monitor the call ringtone in real time. When the call ringtone is monitored for a certain length of time (factory default is 1 second) and a certain number of times, the alarm function of the processor will be triggered, and the processor will send an alarm message to the cloud platform through the wireless communication module.

[0039] In this embodiment, the call module also includes a protection circuit, which is respectively connected to the call port and the call circuit. The protection circuit is used to perform impedance matching with the communication line and to protect the internal circuit of the elevator emergency alarm device to prevent external signals and surges from causing damage to other components of the elevator alarm device.

[0040] In a specific embodiment, the protection circuit includes an interface conversion circuit, a receiving impedance conversion circuit, and a transmitting impedance conversion circuit, and the receiving impedance conversion circuit converts the call ringtone and voice information transmitted by the communication line into a signal that can be received and processed by the elevator emergency alarm device. The transmitting impedance conversion circuit converts the voice signal transmitted by the processor or the wireless communication module into a voice signal that can be processed by the elevator emergency alarm device.

[0041] In this embodiment, the protection circuit further includes a distress trigger circuit, which is connected to the calling circuit, and the protection circuit receives a calling alarm signal transmitted by the calling circuit through the protection circuit.

[0042] In a specific embodiment, the processor monitors the signal sent by the elevator communication system in real time through the protection circuit. When the person trapped in the elevator presses the call button of the call circuit in the elevator communication system for a certain time and a certain number of times, the rescue trigger circuit is triggered to receive the call alarm signal generated by the call circuit. The protection circuit transmits the call alarm signal to the processor, and the processor activates the alarm function after receiving the signal. The processor sends an alarm signal to the cloud platform to which it is connected through the wireless communication module. After the cloud platform receives the alarm signal, it will display the alarm information on the monitoring screen or send a notification to the preset rescue personnel by mobile phone text message, phone call or other means.

[0043] Among them, the trapped person presses the call button to trigger the call trigger circuit of the protection circuit to transmit the call alarm signal to the processing time and number of times can be freely set according to user needs.

[0044] In a specific embodiment, the trapped person presses the call button for 1 second to trigger the protection circuit to transmit a call alarm signal.

[0045] In this embodiment, the call module also includes a call processing circuit, which is connected to the protection circuit, the wireless communication module, and the voice receiving circuit and voice playing circuit of the elevator call system. The call processing circuit is used to control the volume, call and voice transmission.

[0046] In this embodiment, the call processing circuit includes a transmitting amplifier circuit, a transmitting noise processing circuit, a transmitting balance processing circuit, a sidetone elimination processing circuit, and a receiving automatic noise gain circuit. The processor receives a volume adjustment instruction from the site or the cloud platform, processes the noise in the call through the transmitting noise processing circuit, the transmitting balance processing circuit, the sidetone elimination processing circuit, and the receiving automatic noise gain circuit, and adjusts the volume and clarity of the voice of the trapped person according to the distance of the trapped person, and uses the transmitting amplifier circuit to adjust the call volume transmitted to the trapped person.

[0047] In this embodiment, the wireless communication module includes a wireless communication component and an antenna. The wireless communication component is connected to the processor and the antenna respectively. The wireless communication component includes any one of a 2G communication component and a 4G communication component.

[0048] In this embodiment, when the wireless communication component is a 4G communication component, after the elevator emergency alarm device is powered on and started, the processor controls the wireless communication module to automatically enter the data communication mode, and establishes communication between the processor and the cloud through the serial port. When the trapped person in the elevator car presses the call button of the emergency call circuit for more than 1 second, the processor will send an alarm signal to the cloud through the 4G communication component and the antenna. When the wireless communication component receives a call from a rescuer or a cloud platform, the ringing signal emitted by the 4G communication component will be transmitted to the processor. The processor sends an instruction to the 4G communication component to answer the call. The 4G communication component enters the call mode. After the call is connected, the 4G communication component outputs an audio signal through the call processing circuit, and automatically gains and reduces noise on the signal transmitted to the microphone in the elevator, so that the trapped person can smoothly establish a call with the outside world. After the call ends, the processor automatically restores the working mode of the 4G communication component to the data communication mode.

[0049] In other embodiments, the wireless communication component may also be any one of WiFi, 3G, and 5G communication components. The processor communicates with the cloud platform or a preset rescuer through the communication component and the antenna.

[0050] In this embodiment, the elevator emergency alarm device further includes a status display module, which is connected to the processor and displays the working status of the elevator emergency alarm device through the status display module.

[0051] In this embodiment, the status display module can be an LED lamp, a display screen, or other equipment that can display the working status of the elevator emergency alarm device through text, color, or other means.

[0052] In this embodiment, the elevator emergency alarm device includes a clock module, which is connected to the processor and is used to pass a clock signal and a reference signal to the processor.

[0053] In a specific embodiment, the clock module is a crystal oscillator.

[0054] In this embodiment, the elevator emergency alarm device further includes a power module, which is connected to the processor and supplies power to the elevator emergency alarm device through the power supply.

[0055] The power module includes a power management circuit and a conversion circuit. The power management circuit is connected to the conversion circuit and the processor respectively. The conversion circuit converts AC power into DC power and transmits it to the processor through the power management circuit.

[0056] In a specific embodiment, the AC power is 220V-240V.

[0057] In this embodiment, the power module also includes a battery assembly, which is connected to the power management circuit. The battery assembly stores the electric energy input by the power management circuit and supplies power to the elevator emergency alarm device when the conversion circuit is powered off.

[0058] In this embodiment, the battery assembly may be a lithium battery, a super capacitor, a rechargeable battery, or other devices capable of storing electrical energy.

[0059] In a specific embodiment, the battery assembly is a lithium battery, model 18650 lithium battery, with a rated voltage of 12V and a rated current of 2.5AH.

[0060] In this embodiment, the call processing circuit also has an alarm circuit, which is connected to the power management circuit and the battery assembly to detect the power level of the battery assembly. When the power level of the battery assembly is lower than a preset value or an alarm instruction transmitted by the power management circuit is received, a battery power alarm signal is generated and transmitted to the wireless communication module through the automatic noise gain circuit of the call processing circuit. The battery power alarm signal is then transmitted to the cloud platform to realize cloud-based management of the battery assembly.

[0061] In this embodiment, the power module also includes a voltage stabilizer, which is connected to the power management circuit. The voltage stabilizer receives the voltage input by the power management circuit and converts the voltage into a preset voltage to power other components in the elevator emergency alarm device.

[0062] In a specific embodiment, the voltage regulator converts the voltage output by the power management circuit into 12.5V DC to power the components in the elevator emergency alarm device.

[0063] In this embodiment, the conversion circuit includes a step-down circuit and a rectifier circuit. The rectifier circuit is connected to the step-down circuit and the power management circuit respectively. The input AC power is transmitted to the power management circuit after step-down and rectification.

[0064] In this embodiment, the processor is a high-performance 32-bit MCU processor, which can adaptively capture the voice of the person calling for help at long and short distances, and achieve uninterrupted power supply through the built-in power supply of the elevator emergency alarm device. The volume of the intercom receiver of the elevator communication system can be adjusted remotely on-site or through the cloud, and the volume of the speaker in the elevator car can be adjusted remotely on-site or through the cloud.

[0065] In this embodiment, in order to enable rescue personnel to quickly determine the location of the faulty elevator and trapped persons, the cloud platform receives the alarm signal sent by the elevator emergency alarm device, sends alarm information to the preset rescue personnel according to the alarm signal, and sends the voice information sent by the preset rescue personnel to the elevator emergency alarm device, wherein the alarm information includes at least one of the alarm signal, the location of the elevator, the name of the building, and the model of the elevator.

[0066] Compared with the elevators in the prior art, the elevator emergency alarm device of the present invention can achieve the following points:

[0067] 1. Directly connect to the existing elevator communication system without repeated wiring, simple equipment access and low cost;

[0068] 2. Equipped with a wireless communication module, the processor can dial a preset phone number through the wireless communication module to contact the preset rescue personnel, solving the problem of setting up an elevator emergency alarm device without a dedicated duty room management;

[0069] 3. It can realize 24-hour connection with the cloud platform through the MQTT protocol, detect device failures in time, and receive emergency alarm signals sent by trapped people in the elevator;

[0070] 4. Use the cloud platform to establish a two-way conversation between the elevator car intercom system and the on-duty personnel or rescue personnel. Both parties are called parties and no real-name authentication is required;

[0071] 5. Push the basic equipment information and GIS geographic information of the alarm elevator to emergency rescue personnel through the cloud platform, which is helpful for rescue personnel to understand the faulty elevator situation and geographic location information, and implement emergency rescue quickly and accurately;

[0072] 6. The processor is a processor with built-in intelligent chip. The elevator emergency alarm device has a full-network industrial-grade GSM wireless communication module, low-noise audio processing integrated circuit, clear call quality, industrial-grade design standards, intelligent control technology, low power consumption design, environmental protection and energy saving, and can adapt to different places; built-in power module intelligent cloud management function; battery use is safer and longer-lasting;

[0073] 7. It can be extended to multiple M2M industries in the Internet of Things industry chain, such as smart street lights, smart mines, smart homes, smart buildings, smart fire protection, smart public safety and other fields.

[0074] When an elevator malfunctions and people are trapped, and the emergency alarm device of the original elevator communication system is triggered, the intercom system in the elevator car can be used to communicate with the on-duty personnel or rescue personnel through the cloud platform to comfort the trapped people in time. At the same time, the rescue personnel receive rescue information from the cloud platform on their mobile phones, and can locate the faulty elevator through a short link to quickly carry out rescue work. This can reduce the cost of laying out three-way calls in elevators and solve the problems of difficulty and high cost in wiring three-way calls in old elevators. The introduction of the Internet of Things and cloud computing technology in elevator emergency alarm devices is an innovation of peer products on the market. It supports the rapid access of elevator safety management to the management system of smart cities, and fully mobilizes the resources of government, maintenance units, public security, fire protection, elevator manufacturers and other departments to jointly improve the safety of elevator use.

[0075] Beneficial effects: The elevator emergency alarm device of the present invention can detect the alarm signal of the original communication system of the elevator, and alarm through the cloud platform according to the alarm signal, without the need for rewiring, with low cost, and can send the alarm information to multiple preset rescue personnel, eliminating the interference of unmanned duty. By utilizing the characteristics of cloud platform calls, there is no need for real-name authentication, thus protecting personal privacy.

[0076] Based on the same inventive concept, the present invention also proposes an elevator emergency alarm system, see Fig.10 , Fig.10 This is a structural diagram of an embodiment of the elevator emergency alarm system of the present invention, combined with Fig.10 The elevator emergency alarm system of the present invention is described in detail.

[0077] The elevator emergency alarm system of the present invention comprises: a cloud platform and the elevator emergency alarm device as described in the above embodiment.

[0078] In this embodiment, the cloud platform is connected to the elevator emergency alarm device, the cloud platform receives the alarm signal sent by the elevator emergency alarm device, sends alarm information to the preset rescue personnel according to the alarm signal, and sends the voice information sent by the preset rescue personnel to the elevator emergency alarm device, wherein the alarm information includes at least one of the alarm signal, the location of the elevator, the name of the building, and the model of the elevator.

[0079] Beneficial effects: The elevator emergency alarm system of the present invention can detect the alarm signal of the original communication system of the elevator, and alarm through the cloud platform according to the alarm signal, without the need for rewiring, with low cost, and can send the alarm information to multiple preset rescue personnel, eliminating the interference of unmanned duty. By utilizing the characteristics of cloud platform calls, there is no need for real-name authentication, thus protecting personal privacy.

[0080] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, modules and units can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of the modules or is only a logical function division. There may be other division methods in actual implementation, such as multiple or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or, which can be electrical, mechanical or other forms.

[0081] The components described as separate components may or may not be physically separated, and the components shown may or may not be physical, that is, they may be located in one place or distributed in multiple locations. Some or all of them may be selected according to actual needs to achieve the purpose of this embodiment.

[0082] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An elevator emergency alarm device, characterized in that: The elevator emergency alarm device includes a processor, a wireless communication module, a call module and a power module; The processor is connected to the wireless communication module, the wireless communication module is initialized by the processor, and a data communication link with the cloud platform is established through the wireless communication module; The communication module is connected to the communication line or call circuit of the elevator communication system, and the processor detects the alarm signal of the communication line or call circuit through the communication module. When the alarm signal is detected, the processor sends an alarm message to the cloud platform or a preset rescuer through the wireless communication module, and sends the voice message sent by the cloud platform or the preset rescuer to the elevator communication system through the communication module to realize the communication between the trapped person and the rescuer; The power module is connected to the processor, and supplies power to the elevator emergency alarm device through the power module; The power module includes a power management circuit, a conversion circuit, and a battery assembly. The power management circuit is connected to the conversion circuit and the processor respectively. The conversion circuit converts AC power into DC power and transmits it to the processor through the power management circuit. The battery assembly is connected to the power management circuit. The battery assembly stores the electric energy input by the power management circuit and supplies power to the elevator emergency alarm device when the conversion circuit is powered off. The call module includes a call processing circuit, which has an alarm circuit. The alarm circuit is connected to the power management circuit and the battery assembly to detect the power level of the battery assembly. When the power level of the battery assembly is lower than a preset value or an alarm instruction transmitted by the power management circuit is received, a battery power alarm signal is generated and transmitted to the wireless communication module through the automatic noise gain circuit of the call processing circuit. The battery power alarm signal is then transmitted to the cloud platform to realize cloud-based management of the battery assembly.

2. The elevator emergency alarm device according to claim 1, characterized in that: The call module includes a call port, and the call port includes an L port and an R port, and the L port and the R port are respectively connected to the L signal line and the R signal line of the communication line.

3. The elevator emergency alarm device according to claim 2, characterized in that: The call module also includes a protection circuit, which is connected to the call port and the call circuit respectively. The protection circuit is used to perform impedance matching with the communication line and protect the internal circuit of the elevator emergency alarm device.

4. The elevator emergency alarm device according to claim 3, characterized in that: The call processing circuit is connected to the protection circuit, the wireless communication module, and the voice receiving circuit and the voice playing circuit of the elevator call system, and the volume, call and voice transmission processing are performed through the call processing circuit.

5. The elevator emergency alarm device according to claim 4, characterized in that: The call module also includes a voice circuit, which is connected to the call processing circuit and the processor respectively. When the processor receives an alarm signal, the voice circuit sends a soothing voice to the elevator call system through the call processing circuit to soothe the trapped persons.

6. The elevator emergency alarm device according to claim 1, characterized in that: The elevator emergency alarm device further comprises a status display module, which is connected to the processor and displays the working status of the elevator emergency alarm device through the status display module.

7. The elevator emergency alarm device according to claim 1, characterized in that: The elevator emergency alarm device includes a clock module; The clock module is connected to the processor, and is used to pass a clock signal and a reference signal to the processor.

8. The elevator emergency alarm device according to claim 1, characterized in that: The power module includes a voltage stabilizer; The voltage stabilizer is connected to the power management circuit, and receives a voltage input from the power management circuit, and converts the voltage into a preset voltage to supply power to the elevator emergency alarm device.

9. The elevator emergency alarm device according to claim 1, characterized in that: The conversion circuit includes a step-down circuit and a rectifier circuit. The rectifier circuit is connected to the step-down circuit and the power management circuit respectively. The input AC power is transmitted to the power management circuit after step-down and rectification processing.

10. An elevator emergency alarm system, characterized in that: The elevator emergency alarm system comprises: a cloud platform and an elevator emergency alarm device according to any one of claims 1 to 9; The cloud platform is connected to the elevator emergency alarm device, and the cloud platform receives the alarm signal sent by the elevator emergency alarm device, sends alarm information to the preset rescue personnel according to the alarm signal, and sends the voice information sent by the preset rescue personnel to the elevator emergency alarm device, wherein the alarm information includes at least one of the alarm signal, the location of the elevator, the name of the building, and the model of the elevator.

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