4G power-off alarm

Abstract

The invention relates to a 4G power failure alarm, and belongs to the technical field of alarms. The 4G power failure alarm comprises a mounting shell, a master control system, a USB connector and a standby power supply, the master control system is mounted in the mounting shell, the USB connector and the standby power supply are mounted at the two ends of the mounting shell respectively, and the opposite ends of the USB connector and the standby power supply are electrically connected with a protection mechanism fixedly connected with the mounting shell. The output end of the protection mechanism is electrically connected with the main control system; the 4G power-off alarm effectively resists equipment short-circuit fault interference through the dual-protection design of the protection mechanism, the fuse wire can quickly cut off an overcurrent path, the bidirectional TVS diode can instantaneously clamp surge voltage, the fuse wire and the bidirectional TVS diode work cooperatively to form an overvoltage and overcurrent dual-protection barrier, it is ensured that a master control system is not damaged when external power is abnormal, and the service life of the master control system is prolonged. The problem of false alarm caused by voltage sag of a traditional alarm is fundamentally solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of alarm devices, in particular to a 4G power failure alarm device. BACKGROUND

[0002] The 4G power failure alarm device is an industrial monitoring device, which is internally provided with a 4G cellular module to realize remote communication. The device is connected to an external system through a USB serial port and supports switch value data acquisition. When power interruption occurs, the device automatically triggers an alarm and sends real-time notification through a 4G network to ensure timely response.

[0003] When a short circuit fault occurs in the device, current will directly flow to the short circuit point along a low impedance path. Such abnormal current will cause the voltage of the power supply bus to drop sharply, which may interfere with the normal operation of the directly connected power failure alarm device, and even cause false alarms or abnormal functions. SUMMARY

[0004] Therefore, it is necessary to provide a 4G power failure alarm device to solve the problem that the existing 4G power failure alarm device is easily affected by device faults and interferes with normal operation.

[0005] The 4G power failure alarm device comprises a mounting shell, a main control system, a USB connector and a backup power supply. The main control system is installed in the interior of the mounting shell. The USB connector and the backup power supply are respectively installed at two ends of the mounting shell. The opposite ends of the USB connector and the backup power supply are both electrically connected with a protection mechanism fixedly connected with the mounting shell. The output end of the protection mechanism is electrically connected with the main control system.

[0006] In one embodiment, the protection mechanism electrically connected with the USB connector comprises a mounting seat and an insulating box. The mounting seat is fixedly connected with the side end of the mounting shell. The inner side of the mounting seat is fixedly connected with two wire sockets. The inner side of the wire socket is inserted with a conductive sheet fixedly connected with the insulating box. One end of the conductive sheet penetrates into the interior of the insulating box. The opposite ends of the two conductive sheets are respectively electrically connected with a fuse and a bidirectional TVS diode. The fuse and the bidirectional TVS diode are connected in series.

[0007] In one embodiment, a cavity is formed in the interior of the insulating box. The cavity is filled with compressed inert gas. A plug hole is formed in the side end of the insulating box.

[0008] The protection mechanism further comprises an auxiliary ejection assembly. The auxiliary ejection assembly comprises a thorn needle and a push column. An installation hole is formed in the surface of the thorn needle. One end of the fuse penetrates out of the installation hole. The tip of the thorn needle faces the cavity. A rubber spring that is always in a compressed state is fixedly connected between the thorn needle and the insulating box. The push column is slidingly connected in the interior of the plug hole. One end of the push column is in contact with the mounting seat.

[0009] In one of the embodiments, the surface of the needle is slidingly connected with a guide tube fixedly connected with the insulation box, and the rubber spring is arranged on the inner side of the guide tube.

[0010] In one of the embodiments, the inside of the insulation box is provided with a limiting cavity in communication with the jack, and the surface of the push column is fixedly connected with a limiting ring in sliding connection with the limiting cavity.

[0011] In one of the embodiments, the diameter of the limiting ring is greater than the inner diameter of the jack, the diameter of the limiting ring is less than the inner diameter of the limiting cavity, and the limiting ring is a rubber material member.

[0012] In one of the embodiments, the vertical inner wall of the insulation box is provided with a guide hole in communication with the cavity, the axis of the needle and the guide hole are on the same horizontal line, and the auxiliary ejection assembly further comprises a sealing film, which is embedded and installed in the inside of the guide hole.

[0013] In one of the embodiments, the surface of the insulation box is provided with an annular mounting cavity, and the inside of the annular mounting cavity is embedded and installed with a sealing ring in contact with the mounting seat.

[0014] In one of the embodiments, the opening of the mounting seat is chamfered, and the sealing ring is arranged on the inner side of the chamfer of the mounting seat.

[0015] In one of the embodiments, the top and bottom ends of the insulation box are both provided with an adjusting groove, and the adjusting groove is opposite to the chamfer of the mounting seat.

[0016] In one of the embodiments, the input end of the wire socket on the current input side is electrically connected with a light emitting diode, and the light emitting diode is fixedly connected to the side end of the mounting seat.

[0017] The 4G power failure alarm effectively resists device short circuit fault interference through the double protection design of the protection mechanism. The fuse can quickly cut off the overcurrent path, and the bidirectional TVS diode can clamp the surge voltage instantaneously. The two work together to form an overvoltage and overcurrent double protection barrier, ensuring that the main control system is not damaged when external power is abnormal, and fundamentally solving the false alarm problem caused by voltage drop of traditional alarms.

[0018] The 4G power failure alarm integrates a 4G Cat.1 communication module and a backup battery system to ensure that network alarm is triggered immediately and continuously reported in the event of power failure. Industrial-grade STM32 main control and optocoupler isolation detection circuit are used in combination with IP65 protection design to ensure stable operation in complex environments. The plug-and-play USB interface and remote configuration function can realize multi-platform alarm pushing without additional installation, effectively solving the key problems of communication limitation, insufficient endurance and complex deployment of traditional power failure alarm devices.

[0019] After the fuse protection is broken, the auxiliary ejection component automatically triggers the physical isolation mechanism. It releases inert gas to extinguish the arc by piercing the sealing membrane with a needle, and at the same time pushes the conductive sheet to completely separate from the wire socket, forming a double power-off protection. This not only avoids the continuous impact of fault current, but also prevents the risk of arc reignition, significantly improving safety and reliability in complex industrial electrical environments.

[0020] The modular design of the protection mechanism separates the pre-installed modules from the replaceable modules. Users only need to replace the entire insulation box assembly to quickly restore the protection function. Its sealing ring and guide tube structures can still maintain the IP protection level during maintenance, which greatly reduces the difficulty and time cost of maintenance. At the same time, the real-time status indication of the light-emitting diode, combined with the 4G remote alarm function, realizes the synchronous monitoring of faults in the local area and the cloud. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional schematic diagram of the overall structure in this invention;

[0024] Figure 3 This is a schematic diagram showing the connection between a portion of the USB connector and the protection mechanism in this invention;

[0025] Figure 4 This is a cross-sectional schematic diagram of a portion of the USB connector and its protective mechanism in this invention;

[0026] Figure 5 This is a schematic diagram of the replaceable module in this invention;

[0027] Figure 6 This is a cross-sectional schematic diagram of the replaceable module in this invention;

[0028] Figure 7 for Figure 6 Enlarged view of A in the middle;

[0029] Figure 8 This is an exploded view of the replaceable module in this invention;

[0030] Figure 9 This is a schematic diagram of the system flow of the present invention.

[0031] Reference signs:

[0032] 100, mounting shell; 200, main control system; 300, USB connector; 400, backup power supply; 500, protection mechanism; 510, mounting seat; 520, wire socket; 530, conductive sheet; 540, insulating box; 541, cavity; 542, insertion hole; 543, limiting cavity; 544, guide hole; 545, annular mounting cavity; 546, adjusting groove; 550, fuse; 560, bidirectional TVS diode; 570, auxiliary ejection assembly; 571, thorn needle; 572, mounting hole; 573, rubber spring; 574, push column; 575, guide tube; 576, limiting ring; 577, sealing film; 580, sealing ring; 590, light-emitting diode. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only, and do not indicate the only implementation.

[0035] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0036] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0038] The following will be described in conjunction with Figure 1 Figure 9 A 4G power failure alarm is described.

[0039] In one embodiment, the 4G power failure alarm comprises a mounting shell 100, a main control system 200, a USB connector 300 and a backup power supply 400, the main control system 200 is installed inside the mounting shell 100, the USB connector 300 and the backup power supply 400 are respectively installed at both ends of the mounting shell 100, the opposite ends of the USB connector 300 and the backup power supply 400 are electrically connected with the protection mechanism 500 fixedly connected with the mounting shell 100, and the output end of the protection mechanism 500 is electrically connected with the main control system 200.

[0040] The mounting shell 100 is made of flame-retardant material with IP65 protection level, the upper and lower covers are fixed by buckles and have built-in sealing rubber rings to protect the internal components from dust and water splashing.

[0041] The main control system 200 has the following structure;

[0042] Core circuit board: integrated STM32 main control chip (model: STM32F103C8T6) and power management module, connected with 4G module through pin (VCC / 4GND / UART) and receiving opto-isolated power failure detection signal;

[0043] 4G communication module: using Yidou EC200S module, supporting Cat.1 network, equipped with SIM card slot, antenna interface and LED status indicator;

[0044] Interface module: Type-C USB interface (embedded in the side of the shell), used for charging (5V / 2A input) and firmware debugging, and the expansion interface supports external sensor access (such as temperature and humidity sensors);

[0045] Power management module: detects the external power state through PWR_DET and triggers PWR_CTRL to control the battery power switching;

[0046] Master chip: communicates with the 4G module through UART, receives sensor data and reports to the cloud platform (MQTT protocol);

[0047] Buzzer and LED: used for local sound and light alarm.

[0048] Backup battery: built-in 18650 lithium battery (capacity ≥ 2500mAh), connected to the core board through a spring contact, supporting seamless power switching during power failure.

[0049] Specific use method of the 4G power failure alarm

[0050] Installation: insert the device USB Type-A male port into the USB female port of the device to be monitored, and the indicator light will turn on to indicate normal startup.

[0051] Networking: the device automatically searches for 4G Cat.1 network and connects to the preset cloud platform (such as Aliyun IoT) through MQTT protocol.

[0052] Monitoring: under normal power supply, report device status (power supply status, IMEI, battery capacity, signal strength, etc.) every 30 seconds; at the moment of power failure, immediately trigger alarm information (including 4G PS location data if configured).

[0053] Alarm push: the cloud platform pushes power failure / recovery notifications to users through SMS, phone or WeChat public number.

[0054] The 4G power failure alarm integrates 4G Cat.1 communication module and backup battery system to ensure that network alarm is triggered immediately at the moment of power failure and continues to report; it uses industrial-grade STM32 master control and optocoupler isolation detection circuit, combined with IP65 protection design, to ensure stable operation in complex environments; its plug-and-play USB interface and remote configuration function can realize multi-platform alarm push without additional installation, effectively solving the key problems of communication limitation, insufficient endurance and complex deployment of traditional power failure alarm devices.

[0055] For example Figures 2-8As shown, the protection mechanism 500 electrically connected with the USB connector 300 is divided into a preset module and a replaceable module according to the use mode. The preset module is composed of a mounting seat 510, two wire sockets 520 and a light-emitting diode 590. The two wire sockets 520 are respectively connected with the light-emitting diode 590 and the master control system 200 through the wire harness. The replaceable module is composed of two conductive sheets 530, an insulating box 540, a fuse 550, a bidirectional TVS diode 560, an auxiliary ejection assembly 570 and a sealing ring 580. When the user needs to replace the fuse 550 or the bidirectional TVS diode 560, the user needs to replace the entire replaceable module.

[0056] As shown in Figure 3 and Figure 4 , the preset module is outlined as follows:

[0057] The mounting seat 510 is a fixed base of the protection mechanism 500, which is fixedly connected with the side end of the mounting shell 100 through a clamping groove and a hot melt adhesive. A mounting chamber for accommodating the wire socket 520, the conductive sheet 530, the insulating box 540 and the light-emitting diode 590 is arranged in the mounting seat 510.

[0058] The two wire sockets 520 are modular plug-in designs, which are respectively connected with the light-emitting diode 590 and the master control system 200, and are connected in series with the fuse 550 and the bidirectional TVS diode 560 through the conductive sheet 530, so as to simplify the internal wiring.

[0059] The light-emitting diode 590 is connected to the wire socket 520 on the current input side. When normally powered, the light-emitting diode 590 is bright to indicate the state, and after the fuse is blown, the light-emitting diode 590 is extinguished, supporting local / remote (4G module) alarm.

[0060] As shown in Figures 3-8 , the detachable module is outlined as follows:

[0061] The insulating box 540 is internally provided with a cavity 541 filled with compressed inert gas, a limiting cavity 543 and a guide hole 544. A jack 542 is arranged at the side end, and an annular mounting cavity 545 for accommodating the sealing ring 580 is arranged on the surface. An adjusting groove 546 is arranged at the top and bottom ends for easy disassembly and assembly.

[0062] The two conductive sheets 530 are inserted into the wire socket 520 at one end, and are respectively connected with the fuse 550 and the bidirectional TVS diode 560 at the other end, so as to form a current path.

[0063] The fuse 550 is connected in series for overcurrent protection. When the fuse 550 is blown, the auxiliary ejection assembly 570 is triggered to cut off the circuit.

[0064] The bidirectional TVS diode 560 is connected in parallel for overvoltage protection, clamps the surge voltage in nanoseconds, and protects the master control chip and the 4G module.

[0065] Sealing ring 580: embedded in the annular mounting cavity 545, closely fitted with the round corner of the mounting base 510, to strengthen the IP65 protection

[0066] As Figure 4 , Figure 6 , Figure 7 and Figure 8 shown, the auxiliary ejection assembly 570 is composed of:

[0067] Needle 571: after the fuse wire 550 is fused, the fuse wire 550 loses resistance to the needle 571 through the mounting hole 572, the needle 571 is driven by the rubber spring 573, and the sealing film 577 is pierced to release the inert gas when the fuse is blown, pushing the conductive sheet 530 away from the wire socket 520.

[0068] Push column 574 and limit ring 576: the push column 574 slides under the pressure of the gas, and is blocked by the mounting base 510 to push the insulating box 540 away in the opposite direction; the limit ring 576 limits the displacement range

[0069] Guide tube 575 and rubber spring 573: precisely guide the movement of the needle 571 to avoid misoperation.

[0070] Sealing film 577: normally closed to inert gas, pierced to trigger arc extinguishing and ejection mechanism in case of failure

[0071] The working process of the protection mechanism 500 is as follows:

[0072] I. Normal power supply state

[0073] Current transmission path: external power supply → USB connector 300 → wire socket 520 → conductive sheet 530 → fuse wire 550 + bidirectional TVS diode 560 → main control system 200;

[0074] Protection element standby: bidirectional TVS diode 560 real-time suppresses surge voltage to prevent transient overvoltage damage to the circuit; fuse wire 550 maintains an open state under rated current.

[0075] II. Abnormal situation triggers protection

[0076] (1) Overvoltage / surge protection

[0077] Trigger condition: input voltage exceeds the clamping voltage of bidirectional TVS diode 560;

[0078] Action process: bidirectional TVS diode 560 is momentarily turned on, discharging overvoltage energy to ground; if the overvoltage is persistent or the energy is too large, the fuse wire 550 is fused due to overcurrent, cutting off the circuit.

[0079] (2) Overcurrent / short circuit protection

[0080] Trigger condition: current exceeds rated value of fuse 550;

[0081] Action flow: fuse 550 is blown, circuit is disconnected; auxiliary ejection assembly 570 is triggered at the moment of fuse blowing.

[0082] Auxiliary ejection assembly 570 linkage action

[0083] Needle 571 release: after the fuse 550 is broken, the needle 571 loses the fixing force, the rubber spring 573 quickly extends, pushing the needle 571 to pierce the sealing film 577 and penetrate the cavity 541; the guide tube 575 ensures that the needle 571 accurately pierces the sealing film 577;

[0084] Inert gas injection: compressed inert gas in the cavity 541 is ejected through the pierced hole, blowing out the possible electric arc;

[0085] Physical isolation reinforcement: the push column 574 slides out of the hole 542 under the gas pressure, but the push column 574 is blocked by the mounting seat 510, the compressed gas pushes the insulating box 540 out of the mounting seat 510, the insulating box 540 simultaneously drives the two conductive sheets 530 away from the wire socket 520, until the conductive sheets 530 are completely separated from the wire socket 520, further cutting off the electrical connection.

[0086] (3) State indication and feedback

[0087] Fault indication: light-emitting diode 590 is extinguished, prompting that the protection action has been triggered; the master control system 200 detects the interruption of power input, and reports the fault event through the 4G communication module.

[0088] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0089] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. 4G power-off alarm, comprising a mounting shell (100), a main control system (200), a USB connector (300) and a backup power supply (400), the main control system (200) is installed in the inside of the mounting shell (100), the USB connector (300) and the backup power supply (400) are respectively installed at both ends of the mounting shell (100), characterized in that: The opposite ends of the USB connector (300) and the backup power supply (400) are electrically connected with the protection mechanism (500) fixedly connected with the mounting shell (100), and the output end of the protection mechanism (500) is electrically connected with the main control system (200); The protection mechanism (500) electrically connected with the USB connector (300) comprises a mounting seat (510) and an insulating box (540), the mounting seat (510) is fixedly connected to the side end of the mounting shell (100), the inside of the mounting seat (510) is fixedly connected with two wire sockets (520), the inside of the wire socket (520) is inserted with the conductive sheet (530) fixedly connected with the insulating box (540), one end of the conductive sheet (530) penetrates into the inside of the insulating box (540), the opposite ends of the two conductive sheets (530) are respectively electrically connected with the fuse (550) and the bidirectional TVS diode (560), and the fuse (550) and the bidirectional TVS diode (560) are connected in series.

2. The 4G outage alarm of claim 1, wherein: A cavity (541) is formed in the inside of the insulating box (540), the cavity (541) is filled with compressed inert gas, and a jack (542) is formed in the side end of the insulating box (540); The protection mechanism (500) further comprises an auxiliary ejection assembly (570), the auxiliary ejection assembly (570) comprises a thorn needle (571) and a push column (574), the surface of the thorn needle (571) is provided with a mounting hole (572), one end of the fuse (550) penetrates out of the mounting hole (572), the tip of the thorn needle (571) faces the cavity (541), the thorn needle (571) and the insulating box (540) are fixedly connected with the rubber spring (573) which is always in a compressed state, and one end of the push column (574) is in contact with the mounting seat (510).

3. The 4G outage alarm of claim 2, wherein: The surface of the thorn needle (571) is slidably connected with the guide tube (575) fixedly connected with the insulating box (540), and the rubber spring (573) is arranged on the inside of the guide tube (575).

4. The 4G outage alarm of claim 2, wherein: A limiting cavity (543) in communication with the jack (542) is formed in the inside of the insulating box (540), and the surface of the push column (574) is fixedly connected with the limiting ring (576) slidably connected with the limiting cavity (543).

5. The 4G outage alarm of claim 4, wherein: The diameter of the limiting ring (576) is greater than the inner diameter of the jack (542), the diameter of the limiting ring (576) is smaller than the inner diameter of the limiting cavity (543), and the limiting ring (576) is a rubber material member.

6. The 4G outage alarm of claim 2, wherein: The vertical inner wall of the insulation box (540) is provided with a guide hole (544) in communication with the cavity (541), the shaft center line of the guide hole (544) and the lancet (571) are on the same horizontal line, and the auxiliary ejection assembly (570) further comprises a sealing film (577) embedded and installed in the inside of the guide hole (544).

7. The 4G outage alarm of claim 1, wherein: The surface of the insulation box (540) is provided with an annular mounting cavity (545), and the inside of the annular mounting cavity (545) is embedded and installed with a sealing ring (580) in contact with the mounting seat (510).

8. The 4G outage alarm of claim 7, wherein: The opening of the mounting seat (510) is chamfered, and the sealing ring (580) is arranged on the inside of the chamfer of the mounting seat (510).

9. The 4G outage alarm of claim 8, wherein: The top and bottom ends of the insulation box (540) are both provided with adjusting grooves (546), and the adjusting grooves (546) are opposite to the chamfers of the mounting seat (510).

10. The 4G outage alarm of claim 1, wherein: The input end of the wire socket (520) at the current input side is electrically connected with a light emitting diode (590), and the light emitting diode (590) is fixedly connected to the side end of the mounting seat (510).

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