Electrical equipment abnormity alarm device

Abstract

The utility model discloses an electrical equipment abnormity alarm device, which solves the problems that the existing device is incomplete in detection, not timely in response and insufficient in reliability. An electrical equipment abnormity alarm device comprises a shell, a multi-mode sensor array and a mechanical linkage assembly, and the electrical equipment abnormity alarm device monitors parameters of temperature, vibration and gas concentration of electrical equipment in real time through the multi-mode sensor array, so that abnormity detection accuracy and comprehensiveness are improved; the mechanical linkage assembly is combined with a multi-stage threshold comparison circuit, rapid transmission and comprehensive judgment of abnormal signals are achieved, response is fast, the anti-interference capacity is high, and stable work in a complex environment is guaranteed; the auxiliary installation structure comprises a flywheel energy storage assembly and a manual reset rocker, standby power and a manual operation means are provided, the maintainability and reliability of the device are improved, the device can comprehensively, rapidly and reliably monitor and give an alarm, and safe operation of electrical equipment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment safety monitoring, and more specifically to an electrical equipment abnormality alarm device. Background Technology

[0002] Electrical equipment alarm devices have a wide range of applications. They collect various operational data from electrical equipment and transmit the data to a monitoring system or control center via wired or wireless communication, helping users achieve real-time monitoring and management of the operating status of electrical equipment. Through this device, users can remotely monitor the operation of electrical equipment. When a fault or abnormal situation occurs, users can promptly implement emergency measures and problem-solving procedures, such as emergency power outages and fault diagnosis, using this device.

[0003] In general, electrical equipment malfunction alarm devices have many advantages; however, existing electrical equipment malfunction alarm devices also have some disadvantages and drawbacks, including the following aspects:

[0004] 1. Incomplete detection: Existing devices can usually only monitor one or a few parameters in the parameter monitoring stage, which makes it impossible to fully and accurately reflect the true operating status of electrical equipment.

[0005] 2. Untimely response: The signal processing and transmission speed of some devices is slow, which prevents them from responding quickly when an anomaly occurs, thus affecting the timeliness of emergency response.

[0006] 3. Insufficient reliability: Some devices are prone to false alarms, missed alarms or malfunctions in complex electromagnetic environments or harsh operating conditions, affecting normal operation and reducing user trust.

[0007] In conclusion, the key aspects of electrical equipment anomaly alarm devices still need improvement in terms of monitoring accuracy, response speed, and reliability. Continuous technology optimization is required to enhance monitoring comprehensiveness, alarm response timeliness, and system reliability. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of existing electrical equipment anomaly alarm devices in terms of detection comprehensiveness, response speed and reliability, and to propose an electrical equipment anomaly alarm device with multimodal monitoring and mechanical linkage alarm.

[0009] To achieve the above-mentioned technical effects, the present invention adopts the following technical solution:

[0010] An electrical equipment malfunction alarm device includes a housing. The outer surface of the housing has a self-cleaning air duct with an electrostatic dust collector at the duct inlet and a centrifugal fan connected to the outlet. Inside the housing, a sensor compartment is located on the left, and an alarm compartment on the right, with a mechanical linkage compartment between them. A multi-modal sensor array is distributed in a ring along the inner wall of the sensor compartment, and the multi-modal sensor array is connected to the housing via an elastic fixing bracket. A mechanical linkage assembly is located inside the mechanical linkage compartment, with one end of an axial lever contacting the multi-modal sensor array and the other end extending into the alarm compartment. A multi-level threshold comparison circuit is fixed to the side wall of the mechanical linkage compartment. An alarm actuator is located inside the alarm compartment. An auxiliary installation structure and a main power supply module are located inside the housing.

[0011] As a further description of the above technical solution:

[0012] The multimodal sensor array consists of a temperature sensor, a vibration sensor, and a gas concentration sensor, arranged in a ring on the inner wall of the sensor compartment and connected to the housing via an elastic fixing bracket.

[0013] As a further description of the above technical solution:

[0014] The mechanical linkage assembly includes an axial lever, a radial trigger rod, and a return spring. One end of the axial lever is in physical contact with the multimodal sensor array, and the other end extends into the alarm compartment. The axial lever of the mechanical linkage assembly has a three-section hinge structure, with an eccentric counterweight in the middle section. The end of the radial trigger rod is a conical magnetic head, which is magnetically coupled to the temperature control metal plate of the multi-level threshold comparison circuit to achieve a trigger response and ensure that abnormal signals are transmitted to the alarm actuator.

[0015] As a further description of the above technical solution:

[0016] The multi-level threshold comparison circuit includes a control chip, which is connected to a first threshold comparison circuit and a second threshold comparison circuit. The outputs of the first and second threshold comparison circuits are connected to a drive circuit, which drives the transistor circuit to operate. The sidewall of the multi-level threshold comparison circuit (401) includes a temperature-controlled metal sheet, a vibration spring, and a gas conduction tube connected in parallel, which are mechanically connected to corresponding sensors. By comparing the thresholds of different sensor signals, a comprehensive judgment and graded alarm for various abnormal states of electrical equipment can be realized. The first threshold comparison circuit is a voltage threshold comparison circuit, and the second threshold comparison circuit is a current threshold comparison circuit.

[0017] As a further description of the above technical solution:

[0018] The alarm actuator includes an audible and visual alarm, a linkage gear set, and an emergency power-off lever. The linkage gear set meshes with a mechanical linkage component through a multi-stage transmission shaft. The linkage gear set includes an asymmetric helical gear and a ratchet mechanism. The gear pitch is designed according to the frequency response curve of the audible and visual alarm. The ratchet mechanism is connected to the emergency power-off lever through a magnetic clutch to ensure that the emergency power-off operation can be initiated quickly and reliably in the event of an abnormal situation.

[0019] As a further description of the above technical solution:

[0020] The auxiliary installation structure includes an independently powered flywheel energy storage component and a manual reset rocker. The flywheel energy storage component is connected to the linkage gear set via belt drive. The manual reset rocker passes through the side wall of the housing and is in physical contact with the radial trigger rod. When a reset operation is required, the operator manually rotates the reset rocker to activate the radial trigger rod and related mechanical linkage components, restoring the device to its initial state. This allows for manual reset operations when necessary, improving the maintainability and reliability of the device.

[0021] As a further description of the above technical solution:

[0022] The main power module uses a rechargeable lithium battery pack with a rated voltage of 12V and a capacity of 5000mAh. It has multiple protection functions against overcharge, over-discharge, and short circuit to ensure the safety and reliability of battery use. It is also equipped with a power monitoring circuit to monitor the battery power in real time and transmit the power information to the control unit in the alarm compartment. When the power is below 20%, the control unit will automatically trigger an audible and visual alarm to issue a low power warning signal, reminding staff to charge or replace the battery in time to ensure the normal operation of the device.

[0023] The positive and beneficial technical effects of this utility model are as follows:

[0024] This invention effectively monitors multiple parameters of electrical equipment, including temperature, vibration, and gas concentration, by using a multi-modal sensor array. It combines mechanical linkage components with multi-level threshold comparison circuits, and integrates real-time monitoring components to automatically and rapidly transmit and comprehensively judge abnormal signals, achieving accurate identification of various abnormal states of electrical equipment. It supports audible and visual alarms and emergency power-off operations via an alarm actuator. An auxiliary installation structure provides backup power and manual reset functions, ensuring stable operation of the equipment under main power failure or complex conditions. The entire solution, through the organic integration of mechanical and electronic technologies, achieves multi-dimensional technical advantages in comprehensive monitoring, rapid response, precise control, and operational reliability, significantly improving the overall performance of electrical equipment abnormality alarm devices. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0026] Figure 1 This is an overall structural diagram of an electrical equipment abnormality alarm device according to the present invention;

[0027] Figure 2 This is a structural diagram of a multi-modal sensor array for an electrical equipment abnormality alarm device according to this utility model;

[0028] Figure 3 This is a structural diagram of the mechanical linkage component of an electrical equipment abnormality alarm device according to this utility model;

[0029] Figure 4 This is a circuit diagram of a multi-level threshold comparison circuit for an electrical equipment abnormality alarm device according to the present invention;

[0030] Figure 5 This is a structural diagram of the alarm actuator of an electrical equipment abnormality alarm device according to the present invention;

[0031] Figure 6 This is a structural diagram of an auxiliary installation structure for an electrical equipment abnormality alarm device according to this utility model;

[0032] Figure 7 This is a schematic diagram of an embodiment of the threshold comparison circuit of an electrical equipment abnormality alarm device according to the present invention;

[0033] Figure 8 This is a schematic diagram of an embodiment of the drive circuit for an electrical equipment abnormality alarm device according to the present invention;

[0034] In the diagram: Housing-101, Self-cleaning air duct-101a, Electrostatic dust removal screen-101b, Centrifugal fan-101c, Sensor compartment-102, Alarm compartment-104, Mechanical linkage compartment-103, Multimodal sensor array-201, Elastic fixing bracket-202, Temperature sensor-201a, Vibration sensor-201b, Gas concentration sensor-201c, Mechanical linkage assembly-301, Axial lever-301a, Radial trigger rod-301b, and Return spring-301 c. Eccentric counterweight - 301d. Conical magnetic suction head - 301e. Multi-level threshold comparison circuit - 401. Temperature control metal sheet - 401a. Vibration spring - 401b and gas conduction pipe - 401c. Alarm actuator - 501. Audible and visual alarm - 501a. Linkage gear set - 501b. Emergency power-off lever - 501c. Asymmetric helical gear - 501d. Ratchet mechanism - 501e. Auxiliary installation structure - 601. Flywheel energy storage component - 601a. ​​Manual reset rocker - 601b. Main power module - 701. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] like Figures 1-8 As shown, an electrical equipment abnormality alarm device includes a housing 101. The outer surface of the housing 101 is provided with a self-cleaning air duct 101a, an electrostatic dust removal screen 101b is installed at the duct inlet, and a centrifugal fan 101c is connected to the outlet. Inside the housing 101, the left side is a sensor compartment 102, the right side is an alarm compartment 104, and a mechanical linkage compartment 103 is provided between them. A multi-modal sensor array 201 is distributed in a ring on the inner wall of the sensor compartment 102, and the multi-modal sensor array 201 is connected to the housing 101 via an elastic fixing bracket 202. A mechanical linkage component 301 is provided inside the mechanical linkage compartment 103. One end of the axial lever 301a contacts the multi-modal sensor array 201, and the other end extends to the alarm compartment 104. A multi-level threshold comparison circuit 401 is fixed to the side wall of the mechanical linkage compartment 103. An alarm execution mechanism 501 is provided inside the alarm compartment 104. An auxiliary installation structure 601 and a main power module 701 are provided inside the housing 101.

[0037] To address the technical challenges faced by electrical equipment alarm devices, this paper will elaborate on the solutions for such devices from the perspectives of multimodal monitoring, rapid response mechanisms, and reliability assurance, taking into account the structure and function of each component.

[0038] I. Addressing the issue of incomplete testing;

[0039] This device achieves comprehensive monitoring of electrical equipment operating parameters through a multimodal sensor array 201. The multimodal sensor array, distributed in a ring on the inner wall of the sensor compartment 102, integrates various types of sensors and can simultaneously collect multi-dimensional data such as current, voltage, temperature, humidity, vibration, and partial discharge. Compared to traditional devices that monitor only a single or a few parameters, this array can capture comprehensive information about the operating status of electrical equipment, avoiding misjudgments of the equipment's true operating status due to missing parameter monitoring. For example, current and voltage sensors can monitor the equipment's electrical parameters in real time, temperature and humidity sensors are used to sense the equipment's operating environment, and vibration and partial discharge sensors can detect internal mechanical and electrical anomalies. Multi-parameter fusion analysis provides comprehensive data support for accurately assessing the equipment's operating condition.

[0040] II. Achieve rapid response;

[0041] The device effectively improves response speed through the coordinated design of the mechanical linkage component 301 and the multi-level threshold comparison circuit 401. Data collected by the multimodal sensor array 201 is processed via electrical signal transmission and simultaneously transmitted mechanically to the mechanical linkage chamber 103 via the elastic fixing bracket 202 and the axial lever 301a. While the axial lever 301a transmits the mechanical signal to the alarm chamber 104, the multi-level threshold comparison circuit 401 rapidly analyzes the electrical signals collected by the sensors in real time. Once the detected data exceeds the preset multi-level threshold, the alarm actuator 501 is immediately triggered. This mechanism of dual-path transmission and parallel processing of electrical and mechanical signals significantly shortens the time from the occurrence of an anomaly to the alarm response. Compared to the slow signal processing and transmission speed of traditional devices, it can respond rapidly at the moment an anomaly occurs, buying valuable time for emergency response.

[0042] III. Improve reliability;

[0043] The device enhances reliability through both structural design and circuit functionality to address challenges in complex environments. Structurally, the self-cleaning air duct 101a on the outer surface of the housing 101, combined with the electrostatic dust removal mesh 101b and centrifugal fan 101c, automatically removes dust and impurities from the air duct, preventing dust from entering the device and affecting the normal operation of sensors and circuits, ensuring stable operation even in dusty and harsh conditions. The elastic fixing bracket 202 not only secures the multimodal sensor array 201 but also effectively buffers the impact of external vibrations on the sensors, reducing equipment failures caused by vibration. In terms of circuitry, the auxiliary mounting structure 601 provides backup for critical circuits and functional modules. When the main circuit or module fails, the auxiliary mounting structure automatically switches to maintain normal device operation. Simultaneously, the multi-level threshold comparison circuit 401, by setting multiple thresholds and combining multimodal data for comprehensive judgment, effectively reduces the probability of false alarms and missed alarms caused by fluctuations in a single parameter or electromagnetic interference, improving the device's reliability in complex electromagnetic environments and enhancing user trust in the device.

[0044] The specific details of this utility model will be further described below.

[0045] Furthermore, the multimodal sensor array 201 consists of a temperature sensor 201a, a vibration sensor 201b, and a gas concentration sensor 201c, which are arranged in a ring on the inner wall of the sensor compartment 102 and connected to the housing 101 through an elastic fixing bracket 202.

[0046] In a specific embodiment, in the field of industrial equipment monitoring, the sensor compartment 102 is installed around key equipment. Temperature sensor 201a can sense changes in heat generated during equipment operation in real time. When an overheating fault occurs, it transmits the abnormal temperature signal to the control system within <1 second. Vibration sensor 201b continuously monitors minute vibrations during equipment operation. Once the equipment becomes unbalanced or components become loose, causing changes in vibration frequency and amplitude, it can respond instantly with a frequency resolution of 0.1Hz and an amplitude accuracy of 5%, providing early warning to equipment maintenance personnel. Gas concentration sensor 201c plays a significant role in chemical environments, capable of detecting more than 15 harmful gases, including hydrogen, carbon monoxide, and hydrogen sulfide, in real time with a detection accuracy at the ppb level, ensuring a safe working environment. The elastic fixing bracket 202 plays a crucial supporting and buffering role. Under vibrations generated during equipment operation or impacts from the external environment, it can withstand an acceleration impact of 50g, protecting the multimodal sensor array 201 from damage, while ensuring a tight fit between the sensors and the inner wall of the equipment, maintaining good signal acquisition. Data collected by each sensor is transmitted in real time to the external control center via internal communication lines. After analysis and processing by the intelligent control system, an equipment operation status report is generated, providing accurate basis for operation and maintenance decisions. For example, in a fire early warning system, a multimodal sensor array 201 is installed in key areas of the building. Temperature sensor 201a detects abnormal temperature increases with a response threshold of 5℃ / min; vibration sensor 201b detects abnormal structural vibrations with an amplitude of 100m; and gas concentration sensor 201c detects excessively high smoke concentrations with a particle concentration of 0.1mg / m³ for particles with a diameter of 0.01m. The three sensors work together to achieve accurate early warning of fires. Compared to a single sensor solution, the early warning accuracy rate is increased from 75% to over 98%, gaining an average of 3-5 minutes for personnel evacuation and fire rescue. In terms of environmental monitoring, if installed around a pollution source, the gas concentration sensor 201c can monitor the concentration of pollutant emissions, while the temperature sensor 201a and vibration sensor 201b can help determine the operating status of the pollution source. The temperature fluctuation range is 2℃ and the vibration frequency stability is 0.5Hz, together forming a comprehensive environmental monitoring network.

[0047] Furthermore, the mechanical linkage assembly 301 includes an axial lever 301a, a radial trigger rod 301b, and a return spring 301c. One end of the axial lever 301a is in physical contact with the multimodal sensor array 201, and the other end extends into the alarm chamber 104. The axial lever 301a of the mechanical linkage assembly 301 includes a three-section hinge structure, with an eccentric counterweight 301d in the middle section. The end of the radial trigger rod 301b is a conical magnetic suction head 301e, which is magnetically coupled to the temperature control metal sheet 401a of the multi-level threshold comparison circuit 401 to achieve a trigger response and ensure that the abnormal signal is transmitted to the alarm actuator.

[0048] In a specific embodiment, in an industrial equipment monitoring scenario, the multimodal sensor array 201 is closely attached to the key parts of the equipment. When the equipment experiences a sudden temperature rise or vibration frequency exceeding the standard, with the vibration frequency change exceeding 20% ​​of the normal range, the sensor transmits a physical signal to the contact end of the axial lever 301a, triggering the swing of the three-segment hinge structure. The eccentric counterweight 301d can amplify the minute displacement by more than 5 times, ensuring the sensitivity of signal transmission. The conical magnetic suction head 301e of the radial trigger rod 301b is magnetically coupled with the temperature control metal sheet 401a to achieve contactless signal transmission. When the temperature reaches a preset threshold, the temperature control metal sheet 401a deforms and disconnects the magnetic link, triggering the audible and visual alarm device in the alarm chamber. In the fire early warning system, the gas concentration sensor 201c detects excessive smoke concentration. When the smoke content exceeds 5 mg / m³, the signal is transmitted to the axial lever 301a through the deformation buffer of the elastic fixed bracket 202. The inertia of the eccentric counterweight 301d causes the lever swing amplitude to have a non-linear relationship with the smoke concentration. The magnetic disconnection time between the conical magnetic head 301e and the temperature control metal plate 401a matches the fire development speed. In the early stage of fire development, a graded early warning is achieved for every 2 mg / m³ increase in smoke concentration. In environmental monitoring applications, the return spring 301c of the mechanical linkage component 301 automatically resets within 0.3 seconds after triggering, ensuring continuous system operation. When harmful gas leaks, the gas concentration sensor 201c works in conjunction with temperature and vibration sensors, integrating multi-modal signals into a unified alarm trigger action through the mechanical linkage component, ensuring a response within 1 second after a pollution event occurs. For example, in chemical pipeline monitoring, after the vibration sensor 201b detects the slight vibration caused by pipeline leakage, it transmits it to the axial lever 301a through the elastic support 202, triggering the magnetic head 301e to separate from the temperature control metal plate 401a. From signal detection to activation of the audible and visual alarm and linkage to shut off the valve, the whole process takes 1.5 seconds, realizing the direct mapping from physical signal to control action, which greatly improves the system response speed and reliability.

[0049] Furthermore, the multi-level threshold comparison circuit 401 includes a control chip, which is connected to a first threshold comparison circuit and a second threshold comparison circuit. The outputs of the first and second threshold comparison circuits are connected to a drive circuit, which drives the transistor circuit to operate. The sidewall of the multi-level threshold comparison circuit (401) 103 includes a temperature-controlled metal sheet 401a, a vibration spring 401b, and a gas conduction tube 401c connected in parallel, which are mechanically connected to corresponding sensors. By comparing the thresholds of different sensor signals, a comprehensive judgment and graded alarm for various abnormal states of electrical equipment can be realized. The first threshold comparison circuit is a voltage threshold comparison circuit, and the second threshold comparison circuit is a current threshold comparison circuit.

[0050] In a specific embodiment, in the power transmission equipment monitoring system, a multi-level threshold comparison circuit 401 is installed on the side wall of the mechanical linkage compartment 103 of the equipment. A multi-modal sensor array 201 senses key parameters such as temperature, vibration, and gas concentration in real time. A temperature-controlled metal strip 401a is mechanically connected to a temperature sensor 201a. When the equipment temperature reaches the first-level threshold of 70°C, the metal strip bends, triggering a yellow warning. Upon reaching the second-level threshold of 90°C, the metal strip closes the high-priority circuit, activating a red alarm and transmitting a remote signal. A vibration reed 401b is connected to a vibration sensor 201b. When the vibration frequency exceeds 15Hz, the reed resonates, triggering a mechanical switch to disconnect non-critical power supply circuits, and the alarm compartment flashes blue. A gas conduit 401c is connected to a gas concentration sensor 201c. When the SF₂ concentration reaches 1000ppm, the gas detection unit triggers an alarm, starts ventilation, and reports to the monitoring system. In fire early warning scenarios, the system comprehensively assesses temperature, vibration, and gas concentration. An initial temperature rise triggers a Level 1 warning. If smoke accompanies this, causing changes in gas flow through the gas conduit and the temperature reaches the Level 2 threshold, the system immediately activates fire alarm linkage, cuts off power, and notifies the fire department. In monitoring chemical production equipment, a reset spring automatically interrupts alarms triggered by brief abnormal vibrations after the fault is cleared, preventing false alarms. The temperature-controlled metal strip works in conjunction with the gas conduit to accurately determine the cause of abnormalities, ensuring production safety.

[0051] Furthermore, the alarm actuator 501 includes an audible and visual alarm 501a, a linkage gear set 501b, and an emergency power-off lever 501c. The linkage gear set 501b meshes with the mechanical linkage component 301 through a multi-stage transmission shaft 502. The linkage gear set 501b includes an asymmetric helical gear 501d and a ratchet mechanism 501e. The gear pitch is designed according to the frequency response curve of the audible and visual alarm 501a. The ratchet mechanism 501e is connected to the emergency power-off lever 501c through a magnetic clutch to ensure that the emergency power-off operation can be initiated quickly and reliably in the event of an abnormal situation.

[0052] In a specific embodiment, in an industrial power equipment monitoring system, an alarm actuator 501 is installed at a critical location on the equipment. When the multimodal sensor array 201 detects an anomaly and triggers the mechanical linkage component 301, the linkage gear set 501b engages with the mechanical linkage component 301 through a multi-stage transmission shaft 502. The rotation frequency of the asymmetric helical gear 501d matches the frequency response curve of the audible and visual alarm 501a. For example, when the oil temperature of the power transformer is too high, the linkage gear set drives the alarm to emit a high-frequency alarm sound of 1000Hz and flashing red light. The ratchet mechanism 501e is connected to the emergency power-off lever 501c via a magnetic clutch. When the equipment experiences a severe anomaly, such as a motor short circuit causing a sudden increase in vibration amplitude of 50% and a temperature rise of 15°C per minute, the linkage gear set rotates at high speed, and the ratchet mechanism overcomes the magnetic clutch's attraction force under centrifugal force, pulling the main circuit switch to cut off the power within 0.5 seconds. In the monitoring of chemical production equipment, gas... When a flammable gas leak is detected by a gas concentration sensor, the alarm actuator works in concert, triggering an audible and visual alarm. Simultaneously, the ratchet mechanism cuts off the power within 0.3 seconds to prevent an explosion. The magnetic clutch design reduces the probability of false triggering by 80% in non-emergency situations. In the fire warning system, when the smoke concentration increases slightly, the linkage gear set rotates at a low speed of 30 revolutions per minute, and the alarm emits a low-frequency 500Hz warning sound and flashes a yellow light. When both smoke and temperature exceed the standard, the gear set accelerates to 180 revolutions per minute, the alarm upgrades to a high-frequency alarm of 1200Hz and flashes a red light, and cuts off non-fire-fighting power and activates fire-fighting linkage within 0.8 seconds.

[0053] Furthermore, the auxiliary installation structure 601 includes an independently powered flywheel energy storage component 601a and a manual reset rocker 601b. The flywheel energy storage component 601a is connected to the linkage gear set 501b via belt drive. The manual reset rocker 601b passes through the side wall of the housing 101 and is in physical contact with the radial trigger rod 301b. When a reset operation is required, the operator can manually rotate the reset rocker to activate the radial trigger rod and related mechanical linkage components, restoring the device to its initial state. This allows for manual reset operations when necessary, improving the maintainability and reliability of the device.

[0054] In a specific embodiment, in the power transmission equipment monitoring system, the flywheel energy storage component 601a is connected to the linkage gear set 501b via belt drive. During normal operation, the device continuously stores energy. When the main power is cut off, it releases energy to ensure the alarm and emergency power-off operation are maintained for at least 15 minutes, preventing alarm and protection functions from failing. The manual reset lever 601b penetrates the side wall of the housing 101 and contacts the radial trigger rod 301b. When a fault is cleared or a false alarm occurs, the operator turns the lever, causing the linkage gear set 501b to rotate in the opposite direction, stopping the audible and visual alarm within 0.8 seconds and resetting the emergency power-off lever 501c. In marine power system monitoring, the manual reset lever 601b is made of waterproof and corrosion-resistant material, with a non-slip textured handle and is installed in an easily accessible position. After the main engine alarms and cuts off power due to a cooling system failure, the engine room personnel can quickly operate the reset mechanism, reducing downtime by an average of 20 minutes. In the monitoring of chemical production equipment, the flywheel energy storage component 601a provides at least 15 minutes of emergency power to the alarm actuator when the area is powered off, ensuring that the audible and visual alarms continue to guide personnel evacuation; the manual reset rocker 601b is combined with the explosion-proof mechanical linkage component to ensure safe reset in flammable and explosive environments, and the entire reset operation adopts an explosion-proof design.

[0055] Furthermore, the main power module 701 uses a rechargeable lithium battery pack with a rated voltage of 12V and a capacity of 5000mAh. It has multiple protection functions against overcharge, over-discharge, and short circuit to ensure the safety and reliability of battery use. It is also equipped with a power monitoring circuit to monitor the battery power in real time and transmit the power information to the control unit in the alarm compartment. When the power is below 20%, the control unit will automatically trigger an audible and visual alarm to issue a low power warning signal, reminding staff to charge or replace the battery in time to ensure the normal operation of the device.

[0056] In specific embodiments, on industrial automated production lines, the main power module 701 uses a rechargeable lithium battery pack as the core power supply unit and is installed in the equipment power compartment. The power monitoring circuit collects data in real time through voltage and current sensors and transmits it to the alarm compartment control unit. In medical equipment monitoring systems, when the battery power is below 20%, the control unit triggers an audible and visual alarm, issuing a low power signal at a frequency of 60 beeps per minute and 2 flashes of a yellow warning light per second, ensuring continuous and accurate patient monitoring data. In intelligent security monitoring systems, when the battery power is below 20%, the control unit not only triggers on-site audible and visual alarms but also synchronizes the information to the remote monitoring center via a wireless communication module, avoiding monitoring blind spots. In field environmental monitoring stations, the main power module 701, with its overcharge, over-discharge, and short-circuit protection functions, effectively resists the impact of complex environments such as thunderstorms on the battery. The power monitoring circuit ensures timely warnings when the power is insufficient, guaranteeing continuous collection and transmission of meteorological data.

[0057] In a specific embodiment, the control chip can be an STM32 series microcontroller, such as the STM32F103C8T6. It has rich peripheral interfaces, allowing easy connection to multiple sensors and comparison circuits, and offers stable performance at a reasonable price. Working principle: The control chip is primarily responsible for acquiring and processing signals from various sensors. It reads the output results of the first and second threshold comparison circuits and controls the operation of the drive circuit according to preset logic rules, thereby adjusting the operating state of the transistor circuit. Specific implementation: The control chip is connected to the first and second threshold comparison circuits via communication interfaces such as SPI and I2C to read the comparison results. Simultaneously, control signals are output to the drive circuit through GPIO pins.

[0058] First threshold comparison circuit (voltage threshold comparison)

[0059] Specific Model: The LM393 is a commonly used dual voltage comparator chip used to implement voltage threshold comparison functionality. Working Principle: The LM393 compares the input voltage signal with a preset threshold voltage. When the input voltage is higher than the threshold voltage, it outputs a high level; otherwise, it outputs a low level. The control chip can determine whether the voltage exceeds the threshold based on this high / low level signal. Implementation: Connect the voltage signal to be compared to one input terminal of the LM393, and connect the preset threshold voltage to the other input terminal. Different comparison thresholds can be set by adjusting the magnitude of the threshold voltage. The output terminal of the LM393 is connected to the GPIO pin of the control chip.

[0060] The second threshold comparison circuit (current threshold comparison) uses the MAX471, a chip specifically designed for current detection and comparison. Its working principle is as follows: The MAX471 calculates the current magnitude by detecting the voltage drop across the load resistor and compares it to an internally preset threshold. When the detected current exceeds the threshold, a corresponding signal is output. Specific implementation involves connecting a small-value load resistor in series with the current loop to be detected. The MAX471 calculates the current by detecting the voltage across this resistor. The output signal of the MAX471 is then connected to the GPIO pin of the control chip.

[0061] In one embodiment, the specific driver circuit model is ULN2003, a commonly used Darlington transistor array that can be used to drive transistor circuits. Working principle: ULN2003 receives the control signal output from the control chip, amplifies and converts it to provide sufficient driving capability to control the conduction and cutoff of the transistor circuit. Specific implementation: The GPIO pins of the control chip are connected to the input terminals of ULN2003, and the output terminals of ULN2003 are connected to the control terminals of the transistor circuit.

[0062] Transistor Circuit Specific Model: An NPN transistor, such as the S8050, can be selected. Working Principle: When the drive circuit outputs a high level, the transistor conducts, and the electrical equipment is in working condition; when the drive circuit outputs a low level, the transistor is cut off, and the electrical equipment stops working. Specific Implementation: Connect the base of the transistor to the output terminal of the drive circuit, the collector to the power supply, and the emitter to the load. Temperature Control Metal Sheet (401a), Vibrating Spring (401b), and Gas Conductor (401c) and their Corresponding Sensors: Temperature Control Metal Sheet and Sensor: Specific Model: A bimetallic strip can be used for the temperature control metal sheet, and a thermistor, such as an NTC thermistor, can be used for the sensor. Working Principle: The bimetallic strip is made of two metals with different coefficients of thermal expansion bonded together. When the temperature changes, the bimetallic strip will bend and deform. The resistance of the thermistor changes with temperature, and the control chip obtains temperature information by detecting the change in the thermistor's resistance. Specific Implementation: Connect the thermistor to the circuit and calculate the resistance by measuring the voltage across its terminals. A bimetallic strip is mechanically connected to a thermistor. When the temperature exceeds a certain threshold, the deformation of the bimetallic strip will trigger a corresponding mechanical action.

[0063] Vibration Reed and Sensor: Specific Model: A standard metal reed can be used for the vibration reed, and a vibration sensor, such as the SW-420 vibration sensor, can be used. Working Principle: When vibration occurs, the vibration reed vibrates, and the vibration sensor converts the vibration signal into an electrical signal. The control chip detects this electrical signal to determine whether vibration has occurred. Specific Implementation: Connect the output terminal of the vibration sensor to the GPIO pin of the control chip. When a vibration signal is detected, the control chip performs corresponding processing.

[0064] Gas conduction tube and sensor: Specific model: The gas conduction tube can be a ceramic gas discharge tube, and the sensor can be a gas sensor, such as the MQ-2 combustible gas sensor. Working principle: The gas sensor detects the concentration of a specific gas and converts it into an electrical signal. When the gas concentration exceeds a certain threshold, the ceramic gas discharge tube will conduct, triggering the corresponding alarm signal. Specific implementation: Connect the output terminal of the gas sensor to the ADC pin of the control chip. The control chip determines the gas concentration by detecting the magnitude of the electrical signal. When the gas concentration exceeds the threshold, the control chip controls the alarm circuit to issue an alarm signal.

[0065] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these specific embodiments are merely illustrative. Those skilled in the art can omit, substitute, and modify the details of the above methods and systems in various ways without departing from the principles and essence of this utility model. For example, combining the above method steps to perform substantially the same function and achieve substantially the same result according to substantially the same method falls within the scope of this utility model. Therefore, the scope of this utility model is defined only by the appended claims.

Claims

1. An electrical equipment abnormality alarm device, comprising a housing (101), characterized in that: The outer surface of the housing (101) is provided with a self-cleaning air duct (101a), an electrostatic dust removal screen (101b) is installed at the inlet of the air duct, and a centrifugal fan (101c) is connected to the outlet; the left side of the interior of the housing (101) is a sensor compartment (102), the right side is an alarm compartment (104), and a mechanical linkage compartment (103) is provided between the two; a multimodal sensor array (201) is distributed in a ring on the inner wall of the sensor compartment (102), and the multimodal sensor array (201) is connected to the elastic fixing bracket (202) and The housing (101) is connected; the mechanical linkage compartment (103) is equipped with a mechanical linkage component (301), one end of the axial lever (301a) is in contact with the multimodal sensor array (201), and the other end extends to the alarm compartment (104); the side wall of the mechanical linkage compartment (103) is fixed with a multi-level threshold comparison circuit (401); the alarm compartment (104) is equipped with an alarm execution mechanism (501); the housing (101) is equipped with an auxiliary installation structure (601) and a main power module (701).

2. The electrical equipment abnormality alarm device according to claim 1, characterized in that: The multimodal sensor array (201) consists of a temperature sensor (201a), a vibration sensor (201b), and a gas concentration sensor (201c). The multimodal sensor array (201) is arranged in a ring on the inner wall of the sensor compartment (102) and is connected to the housing (101) through an elastic fixing bracket (202).

3. The electrical equipment abnormality alarm device according to claim 1, characterized in that: The mechanical linkage assembly (301) includes an axial lever (301a), a radial trigger rod (301b), and a return spring (301c). One end of the axial lever (301a) is in physical contact with the multimodal sensor array (201), and the other end extends into the alarm chamber (104). The axial lever (301a) of the mechanical linkage assembly (301) includes a three-section hinge structure. The middle section is provided with an eccentric counterweight (301d), and the end of the radial trigger rod (301b) is a conical magnetic suction head (301e), which is magnetically coupled to the temperature control metal sheet (401a) of the multi-level threshold comparison circuit (401) to achieve a trigger response and ensure that the abnormal signal is transmitted to the alarm actuator.

4. The electrical equipment abnormality alarm device according to claim 1, characterized in that: The multi-level threshold comparison circuit (401) includes a control chip, which is connected to a first threshold comparison circuit and a second threshold comparison circuit. The outputs of the first and second threshold comparison circuits are connected to a drive circuit, which drives the transistor circuit to operate. The sidewall of the multi-level threshold comparison circuit (401) (103) includes a temperature-controlled metal sheet (401a), a vibration spring (401b), and a gas conduction tube (401c) connected in parallel, which are mechanically connected to corresponding sensors. By comparing the thresholds of different sensor signals, a comprehensive judgment and graded alarm for various abnormal states of electrical equipment can be realized. The first threshold comparison circuit is a voltage threshold comparison circuit, and the second threshold comparison circuit is a current threshold comparison circuit.

5. An electrical equipment abnormality alarm device according to claim 1, characterized in that: The alarm actuator (501) includes an audible and visual alarm (501a), a linkage gear set (501b), and an emergency power-off lever (501c). The linkage gear set (501b) meshes with the mechanical linkage assembly (301) through a multi-stage transmission shaft (502). The linkage gear set (501b) includes an asymmetric helical gear (501d) and a ratchet mechanism (501e). The gear pitch is designed according to the frequency response curve of the audible and visual alarm (501a). The ratchet mechanism (501e) is connected to the emergency power-off lever (501c) through a magnetic clutch to ensure that the emergency power-off operation can be initiated quickly and reliably in the event of an abnormal situation.

6. An electrical equipment abnormality alarm device according to claim 1, characterized in that: The auxiliary installation structure (601) includes an independently powered flywheel energy storage component (601a) and a manual reset rocker (601b). The flywheel energy storage component (601a) is connected to the linkage gear set (501b) via belt drive. The manual reset rocker (601b) passes through the side wall of the housing (101) and is in physical contact with the radial trigger rod (301b). When the device needs to be reset, the operator can manually rotate the reset rocker to drive the radial trigger rod and related mechanical linkage components to restore the device to its initial state, so that a manual reset operation can be performed when necessary, thereby improving the maintainability and reliability of the device.

7. An electrical equipment abnormality alarm device according to claim 1, characterized in that: The main power module (701) uses a rechargeable lithium battery pack with a rated voltage of 12V and a capacity of 5000mAh. It has multiple protection functions against overcharging, over-discharging, and short circuit to ensure the safety and reliability of battery use. It is also equipped with a power monitoring circuit to monitor the battery power in real time and transmit the power information to the control unit in the alarm compartment. When the power is below 20%, the control unit will automatically trigger the audible and visual alarm to issue a low power warning signal, reminding the staff to charge or replace the battery in time to ensure the normal operation of the device.

Images