Abnormal displacement prevention system for mobile energy supply unit

Abstract

The utility model provides an abnormal displacement prevention system for a mobile energy supply unit. According to the system, a first detection circuit and a second detection circuit are arranged to detect the output voltage change of a mobile energy supply unit and the voltage change at the two ends of an anti-theft bolt respectively, so that an abnormal displacement event can be identified more accurately; when abnormity is detected through a comparator circuit in the first detection circuit and an antitheft bolt voltage detection circuit in the second detection circuit, signals are sent to the control unit, so that the control unit triggers the alarm unit to give an alarm after receiving the signals. The system is used for solving the problem that an effective detection mode for abnormal displacement of a mobile energy supply unit in engineering equipment is lacked in the related technology.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy equipment technical field especially relates to a mobile energy supply unit abnormal displacement prevention system. BACKGROUND

[0002] With the wide application of new energy technology, new energy supply equipment such as photovoltaic systems and various batteries are applied to various engineering equipment, and are also applied more and more, for example, installing photovoltaic panels on gantry cranes and other equipment can assist the auxiliary energy supply of electronic equipment and air conditioners in the crane, and for example, installing a matching mobile energy supply unit on port handling equipment and new energy trucks can significantly improve the use convenience and comfort of these devices, and can facilitate the intelligent transformation of these devices. This brings attention to the safety of these high-cost mobile energy supply units, such as theft prevention and abnormal displacement prevention.

[0003] In related technologies, the mobile energy supply unit on the engineering equipment usually does not set up an additional safety monitoring system, or only detects the power supply signal of the mobile energy supply unit, but the latter is difficult to distinguish between normal maintenance and abnormal displacement, resulting in false positives and poor results. UTILITY MODEL CONTENTS

[0004] The mobile energy supply unit abnormal displacement prevention system provided by the utility model solves the problem of lack of effective detection of abnormal displacement of the mobile energy supply unit in the engineering equipment in related technologies.

[0005] In a first aspect, the utility model embodiment provides a mobile energy supply unit abnormal displacement prevention system, which comprises:

[0006] A control unit, a first detection circuit, a second detection circuit, a mobile energy supply unit and an alarm unit.

[0007] The first detection circuit comprises a comparator circuit, the input end of the comparator circuit is connected with the output end of the mobile energy supply unit, and the output end of the comparator circuit is connected with the input end of the control unit.

[0008] The second detection circuit comprises an anti-theft bolt voltage detection circuit, the input end of the anti-theft bolt voltage detection circuit is connected with the output end of the reference power supply, and the output end of the anti-theft bolt voltage detection circuit is connected with the input end of the control unit.

[0009] The output end of the control unit is connected with the alarm unit.

[0010] The comparator circuit is configured to switch the first level signal output to the control unit when the voltage output by the mobile power supply unit changes; the anti-theft bolt voltage detection circuit is configured to switch the voltage signal sent to the control unit when the voltage across the anti-theft bolt changes;

[0011] The control unit is configured to switch the second level signal output to the alarm unit when the first level signal and the voltage signal input change; the alarm unit is configured to trigger corresponding alarm actions based on the received second level signal.

[0012] In a possible implementation, the comparator circuit includes a comparator, the input end of which is connected to the output end of the mobile power supply unit, and the output end of which is connected to the output end of the reference power supply;

[0013] The comparator is configured to switch the first level signal output to the control unit when the difference between the voltage output by the mobile power supply unit and the voltage output by the reference power supply changes.

[0014] In a possible implementation, the first detection circuit includes a Hall sensor, which is arranged between the output end of the mobile power supply unit and the input end of the comparator circuit;

[0015] The Hall sensor is used to convert the high-voltage electrical signal output by the mobile power supply unit into a Hall electrical signal input into the comparator circuit.

[0016] In a possible implementation, the anti-theft bolt voltage detection circuit includes an anti-theft bolt, which is arranged on the mobile power supply unit, one end of which is connected to the output end of the reference power supply, the other end of which is connected to the ground wire, and both ends of which are connected to a voltage detection unit, the input end of which is connected to the control unit;

[0017] The voltage detection unit is used to detect the voltage across the anti-theft bolt and transmit the detected voltage signal to the control unit.

[0018] In a possible implementation, a stress feedback unit is arranged in the anti-theft bolt, and the stress feedback unit is connected to both ends of the anti-theft bolt;

[0019] The stress feedback unit is configured to change its resistance when the received stress exceeds a trigger threshold.

[0020] In a possible implementation, the stress feedback unit is a strain gauge or a wire containing a preset breaking interface.

[0021] The trigger threshold of the stress feedback unit is a set multiple of the anti-theft bolt installation torque, and the set multiple is greater than 1.2.

[0022] In a possible implementation, the middle part of the outer side of the anti-theft bolt is sleeved with an insulating layer.

[0023] In a possible implementation, the second detection circuit further includes a normally closed micro switch, and the micro switch is connected in series with the voltage detection unit.

[0024] The micro switch is configured to disconnect the loop in which the voltage detection unit is located when receiving the vibration.

[0025] In a possible implementation, the micro switch includes at least two micro switches, the micro switches are connected in series with each other, and the micro switches are symmetrically arranged between the mobile power supply unit and the engineering equipment, respectively.

[0026] In a possible implementation, the alarm unit includes an audible and visual alarm connected to the output end of the control unit.

[0027] The audible and visual alarm is configured to trigger a corresponding alarm action when receiving the second level signal output by the control unit.

[0028] The mobile power supply unit abnormal displacement prevention system provided in the embodiment can more accurately identify abnormal displacement events by setting the first detection circuit and the second detection circuit to detect the output voltage change of the mobile power supply unit and the voltage change across the anti-theft bolt, respectively. When the comparator circuit in the first detection circuit and the anti-theft bolt voltage detection circuit in the second detection circuit detect abnormalities, respectively, signals are sent to the control unit, so that the control unit triggers the alarm unit to alarm after receiving the signals. Thus, a multi-level detection mechanism is achieved, the possibility of false alarms is effectively reduced, the reliability and safety of the system are improved, the system is suitable for various engineering equipment application scenarios, the safety of the mobile power supply unit is improved, and the risk of damage or loss of the mobile power supply unit caused by abnormal displacement is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0030] Figure 1 An application scenario diagram of the mobile power supply unit abnormal displacement prevention system provided in the embodiment;

[0031] Figure 2 A schematic diagram of the overall structure of the mobile power supply unit abnormal displacement prevention system provided in the embodiment;

[0032] Figure 3 The first detection circuit provided for the embodiment and the control unit, the mobile energy supply unit cooperation relationship diagram;

[0033] Figure 4 The second detection circuit provided for the embodiment and the control unit, the reference power supply cooperation relationship diagram;

[0034] Figure 5 The relative position relationship diagram of the anti-theft bolt, the micro switch and the mobile energy supply unit provided for the embodiment.

[0035] Among them, 100, engineering equipment,

[0036] 200, abnormal displacement prevention system, 210, control unit, 220, first detection circuit, 221, comparator circuit, 222, comparator, 223, reference power supply, 224, Hall sensor, 230, second detection circuit, 231, anti-theft bolt voltage detection circuit, 232, anti-theft bolt, 233, stress feedback unit, 234, voltage detection unit, 235, insulation layer, 236, micro switch, 240, mobile energy supply unit, 250, alarm unit, 251, audible and visual alarm.

[0037] Through the above drawings, the specific embodiments of the present application have been shown, and more detailed description will be given hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] The exemplary embodiments will be described in detail herein below, with examples shown in the drawings. When the following description refers to the drawings, identical numbers on different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] Embodiment 1

[0040] In the prior art, mobile energy supply units are widely used in various engineering equipment, such as photovoltaic systems and battery new energy equipment installed on gantry cranes, port handling equipment and new energy trucks. The application of these mobile energy supply units significantly improves the convenience of equipment use and the possibility of intelligent transformation. However, since these energy supply units are usually installed outdoors or in open environments, they are easily affected by external factors such as severe weather, uneven ground, equipment vibration and accidental collisions, which can cause abnormal displacement of the energy supply unit. In addition, the high value of the mobile energy supply unit itself also makes it a target for theft, further increasing the risk of abnormal displacement. Therefore, how to effectively detect and prevent these abnormal displacements has become a problem to be solved.

[0041] The detection effect of abnormal displacement of mobile energy supply units in the prior art is poor, mainly because there is a lack of a special detection system or only relying on the detection of power supply signals. The traditional power supply signal detection method cannot distinguish between normal maintenance activities and abnormal displacement, because both will cause changes in the power supply signal, which is prone to false positives. In addition, the existing system usually lacks direct detection means for physical displacement, which makes the system unable to timely and accurately detect abnormal displacement events. Due to the limitations of these detection means, the prior art often reacts slowly when dealing with abnormal displacement, and cannot provide timely and effective alarm and protection measures, resulting in insufficient protection of equipment safety.

[0042] The mobile energy supply unit abnormal displacement prevention system provided by the present application solves the problem of poor detection effect of mobile energy supply unit abnormal displacement in the prior art by introducing a multi-level detection method. Through the first detection circuit and the second detection circuit, the output voltage change of the mobile energy supply unit and the voltage change at both ends of the anti-theft bolt are detected respectively. After receiving these signal changes through the control unit, the alarm unit is triggered to alarm. Not only improves the accuracy of abnormal displacement detection, reduces false positives, but also triggers alarms in a timely manner, improves the safety and reliability of the equipment.

[0043] Figure 1 The application scenario diagram of the mobile energy supply unit abnormal displacement prevention system provided by the present application is shown in FIG. 1, and the specific application scenario of the present application is as follows: Figure 1 As shown in FIG. 1, on the engineering equipment 100, a mobile energy supply unit abnormal displacement prevention system 200 is installed, which combines the mobile energy supply unit with the anti-abnormal displacement components to prevent the abnormal displacement of the mobile energy supply unit.

[0044] It should be noted that, Figure 1The scene shown includes engineering equipment and mobile energy supply unit abnormal displacement prevention system. The number of engineering equipment and mobile energy supply unit abnormal displacement prevention system is only taken as an example, but the disclosure is not limited thereto. That is, the number of engineering equipment and mobile energy supply unit abnormal displacement prevention system can be any number.

[0045] The technical solutions of the present application and how the technical solutions solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in detail in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0046] Figure 2 The overall structure of the mobile energy supply unit abnormal displacement prevention system provided by the present application is shown in the schematic diagram of the mobile energy supply unit abnormal displacement prevention system. Figure 2 As shown in the schematic diagram of the mobile energy supply unit abnormal displacement prevention system 200, the mobile energy supply unit abnormal displacement prevention system 200 specifically includes:

[0047] The control unit 210, the first detection circuit 220, the second detection circuit 230, the mobile energy supply unit 240, and the alarm unit 250.

[0048] The first detection circuit 220 includes a comparator circuit 221, the input end of the comparator circuit 221 is connected with the output end of the mobile energy supply unit 240, and the output end of the comparator circuit 221 is connected with the input end of the control unit 210.

[0049] The second detection circuit 230 includes an anti-theft bolt voltage detection circuit 231, the input end of the anti-theft bolt voltage detection circuit 231 is connected with the output end of the reference power supply 223, and the output end of the anti-theft bolt voltage detection circuit 231 is connected with the input end of the control unit 210.

[0050] The output end of the control unit 210 is connected with the alarm unit 250.

[0051] The comparator circuit 221 is configured to switch the first level signal output to the control unit 210 when the voltage output by the mobile energy supply unit 240 changes, and the anti-theft bolt voltage detection circuit 231 is configured to switch the voltage signal sent to the control unit 210 when the voltage across the anti-theft bolt 232 changes.

[0052] The control unit 210 is configured to switch the second level signal output to the alarm unit 250 when the first level signal and the voltage signal input change, and the alarm unit 250 is configured to trigger the corresponding alarm action based on the received second level signal.

[0053] Specifically, the present embodiment is used to generally describe the main components of the mobile energy supply unit abnormal displacement prevention system 200 and its working principle.

[0054] The mobile energy supply unit 240 referred to in this embodiment refers to an energy supply device arranged in the engineering equipment 100, which can be a core energy supply device (such as various batteries in a new energy truck) or an auxiliary energy supply device (such as a photovoltaic panel installed on a crane, a hoist, or the like). Its main function is to provide power support for the mobile engineering equipment 100 to meet the needs of the engineering equipment 100, so it is named as the mobile energy supply unit 240.

[0055] The structure size of the mobile energy supply unit abnormal displacement prevention system 200 except the mobile energy supply unit 240 is small, which can be integrated in the outer wall of the mobile energy supply unit 240 or the connection part with the engineering equipment 100 to ensure the safety of itself.

[0056] The control unit 210 is the core processor of the mobile energy supply unit abnormal displacement prevention system 200, which is responsible for receiving signals from the first detection circuit 220 and the second detection circuit 230.

[0057] It can be a digital signal processor or a micro control chip to detect the specific values of the first level signal and the voltage signal and make specific fault judgments according to the value changes, or it can be a single-chip microcomputer to directly output different results according to whether the first level signal and the voltage signal change, that is, the second level signal.

[0058] The main function of the control unit 210 is to send corresponding second level signals to the alarm unit 250 according to these signals. When the detection results of the first detection circuit 220 and the second detection circuit 230 are normal, the second level signal output by the control unit 210 to the alarm unit 250 is low, at which time the alarm unit 250 will not act, and when the first detection circuit 220 and the second detection circuit 230 detect an abnormality, a trigger signal is sent to the control unit 210.

[0059] By configuring the control unit 210, it is ensured that the mobile energy supply unit abnormal displacement prevention system 200 can quickly respond to signal changes and provide timely alarms.

[0060] The first detection circuit 220 includes a comparator circuit 221 connected to the output end of the mobile energy supply unit 240. The function of the comparator circuit 221 is to detect the output voltage of the mobile energy supply unit 240. When the voltage changes, the comparator circuit 221 will switch the output signal to the control unit 210. When the mobile energy supply unit 240 is in a normal working state, the voltage output by it will usually remain stable, but when the voltage changes, it is usually an abnormal situation such as a circuit break or a fault at the output end of the mobile energy supply unit 240. In this way, the mobile energy supply unit abnormal displacement prevention system 200 can detect the voltage abnormality of the mobile energy supply unit 240 and judge whether the mobile energy supply unit 240 has an abnormal displacement.

[0061] In addition to the first detection circuit 220, the second detection circuit 230 is also provided in the scheme to detect the voltage change across the anti-theft bolt 232 through the anti-theft bolt voltage detection circuit 231 contained therein. The anti-theft bolt 232 is used to fix the energy supply unit, and when the spatial position of the mobile energy supply unit 240 is abnormally adjusted (i.e., when the mobile energy supply unit 240 abnormally displaces), an additional security layer is provided through voltage detection. When the mobile energy supply unit 240 abnormally displaces and drives the anti-theft bolt 232 to be moved, the anti-theft bolt voltage detection circuit 231 detects the voltage change across the anti-theft bolt 232 (such as the voltage drop to zero due to the anti-theft bolt 232 being pulled out, causing the circuit to be disconnected), and the anti-theft bolt voltage detection circuit 231 sends a corresponding voltage signal to the control unit 210. According to the voltage signal, it can be indicated that there may be a physical displacement or theft behavior.

[0062] The alarm unit 250 is responsible for performing the preset alarm action after receiving the trigger signal from the control unit 210. This may include audible and light alarms, remote notifications, etc., so as to timely remind relevant personnel to check and handle. Even if the control unit 210 is a single-chip microcomputer, a corresponding second level signal can be sent to the terminal of the engineering equipment 100 or the management personnel by means of remote notification with the help of a remote communication module. At this time, the terminal of the engineering equipment 100 or the management personnel will be configured with the meaning corresponding to different second level signals, so as to determine the possible abnormal displacement according to the second level signal.

[0063] Overall, the system effectively solves the problem of poor detection effect of abnormal displacement of the mobile energy supply unit 240 in the prior art through a multi-level detection mechanism. First, the first detection circuit 220 can quickly identify the electrical abnormality of the energy supply unit by detecting the voltage change, prompting possible displacement or failure. Second, the second detection circuit 230 provides physical layer security through voltage detection of the anti-theft bolt 232, which can detect displacement caused by external force or theft.

[0064] When only the first detection circuit 220 changes the output first level signal, and the second detection circuit 230 is normal, it may be only the mobile energy supply unit 240, the system normal shutdown, etc., at this time, no alarm needs to be generated to avoid false alarms; similarly, only the second detection circuit 230 changes the output voltage signal, and the first detection circuit 220 is normal, it may be disassembled, repaired, etc. (at this time, only the mobile energy supply unit 240 needs to be removed, without the need to disconnect the connection between the mobile energy supply unit 240 and other elements in the mobile energy supply unit abnormal displacement prevention system 200).

[0065] Only when the first detection circuit 220 and the second detection circuit 230 change the output signal at the same time, the control unit 210 will change the output second level signal, to ensure that the abnormal displacement will occur at this time.

[0066] This double detection mechanism greatly improves the accuracy of abnormal detection, reduces the possibility of false positives, and improves the practicality of the mobile power unit abnormal displacement prevention system 200.

[0067] At the same time, this false alarm prevention mechanism also provides convenience for the maintenance and management of the equipment. Through timely alarm, relevant personnel can take measures quickly to prevent equipment damage or loss.

[0068] The mobile power unit abnormal displacement prevention system provided by the embodiment of the application sets a first detection circuit and a second detection circuit to detect the output voltage change of the mobile power unit and the voltage change at both ends of the anti-theft bolt respectively, so that the abnormal displacement event can be more accurately identified. When the comparator circuit in the first detection circuit and the anti-theft bolt voltage detection circuit in the second detection circuit detect abnormalities respectively, signals are sent to the control unit, so that the control unit triggers the alarm unit to alarm after receiving the signals. Thus, a multi-level detection mechanism is realized, the possibility of false positives is effectively reduced, the reliability and safety of the system are improved, the system is suitable for various engineering equipment application scenarios, the safety of the mobile power unit is improved, and the risk of damage or loss of the mobile power unit caused by abnormal displacement is reduced.

[0069] Figure 3 The first detection circuit provided by the application cooperates with the control unit and the mobile power unit, as shown in the cooperation relationship diagram of the first detection circuit and the control unit and the mobile power unit, Figure 3 as shown in the cooperation relationship diagram of the first detection circuit and the control unit and the mobile power unit, Figure 2 On the basis of the embodiment, the specific structure of the mobile power unit abnormal displacement prevention system 200 is further described in detail. The system further includes:

[0070] The comparator circuit 221 includes a comparator 222, the input end of the comparator 222 connected to the output end of the mobile power unit 240, and the output end of the reference power supply 223; the comparator 222 is configured to switch the first level signal output to the control unit 210 when the difference between the voltage output by the mobile power unit 240 and the voltage output by the reference power supply 223 changes.

[0071] Specifically, the input end of the comparator 222 is connected to the output end of the mobile power unit 240 and the output end of the reference power supply 223, and by comparing the voltage output by the mobile power unit 240 and the voltage (i.e. reference voltage) output by the reference power supply 223, the output signal is switched when the difference changes.

[0072] Specifically, when the voltage of the mobile power supply unit 240 deviates from the reference voltage, the comparator 222 outputs a different level signal. The voltage deviation degree of the mobile power supply unit 240 refers to the difference between the voltage of the mobile power supply unit 240 and the reference voltage reaching a preset threshold range. For example, the voltage deviation degree of the mobile power supply unit 240 is 3%-10%, which can be adjusted according to actual needs. For example, when the voltage deviation degree reaches 5%, the comparator 222 will respond and output the corresponding level signal. Those skilled in the art can adjust the voltage deviation degree according to the needs of the actual application scene to ensure that the system can accurately and reliably detect voltage abnormalities and respond.

[0073] By introducing the reference power supply 223, the comparator 222 can more accurately detect voltage changes and reduce false positives caused by voltage fluctuations. This design improves the sensitivity of the system to abnormal displacement, ensuring that the system can issue an alarm in a timely manner when the power supply unit has an abnormal displacement.

[0074] In actual applications, a stabilizing circuit or the like can also be added to the first detection circuit 220 to ensure the stability of the reference voltage output by the reference power supply 223. Relevant improvements are well known in the art and can be completed by those skilled in the art without creative effort, so this will not be described here.

[0075] In one possible implementation, the first detection circuit 220 includes a Hall sensor 224 disposed between the output end of the mobile power supply unit 240 and the input end of the comparator circuit 221. The Hall sensor 224 is configured to convert the high-voltage electrical signal output by the mobile power supply unit 240 into a Hall electrical signal input into the comparator circuit 221.

[0076] Specifically, the Hall sensor 224 is a sensor that can sense changes in the magnetic field and convert the high-voltage electrical signal output by the mobile power supply unit 240 into a low-voltage electrical signal, i.e., a Hall electrical signal.

[0077] In some embodiments of the present application, the high-voltage electrical signal can also be referred to as a first electrical signal, and the low-voltage electrical signal can also be referred to as a second electrical signal, where the voltage corresponding to the first electrical signal is greater than the voltage corresponding to the second electrical signal.

[0078] The Hall sensor 224 is disposed between the output end of the mobile power supply unit 240 and the input end of the comparator circuit 221. The Hall sensor 224 can convert the high-voltage electrical signal into a Hall electrical signal, so that the comparator circuit 221 can process signals with lower voltages, increasing the safety of the system.

[0079] The conversion function of the Hall sensor 224 enables the system to accurately detect voltage changes without affecting the safety of the circuit. This design not only improves the safety of the system, but also ensures the accuracy of the detection and reduces the possibility of false positives.

[0080] In one possible implementation, the anti-theft bolt voltage detection circuit 231 includes an anti-theft bolt 232, which is arranged on the mobile power supply unit 240. One end of the anti-theft bolt 232 is connected to the output end of the reference power supply 223, and the other end is connected to the ground wire. The anti-theft bolt 232 is also connected to the voltage detection unit 234 at both ends, and the voltage detection unit 234 is connected to the input end of the control unit 210. The voltage detection unit 234 is used to detect the voltage on both sides of the anti-theft bolt 232 and transmit the detected voltage signal to the control unit 210.

[0081] Specifically, as shown in Figure 4 , it is a schematic diagram of the cooperation relationship between the second detection circuit and the control unit, reference power supply, as shown in Figure 5 , it is a schematic diagram of the relative position relationship between the anti-theft bolt, micro switch and mobile power supply unit. The following will be described in combination with Figure 4 and Figure 5 .

[0082] In this embodiment, the anti-theft bolt 232 is a specially designed bolt that can be used to fix the mobile power supply unit 240 and also cooperates to achieve the voltage detection function.

[0083] One end of the anti-theft bolt 232 is connected to the reference power supply 223, and the other end is connected to the ground wire (or connected to the ground wire through a resistor). The voltage detection unit 234 is connected at both ends of the anti-theft bolt 232 for detecting voltage changes and transmitting signals to the control unit 210. Thus, the mobile power supply unit abnormal displacement system 200 can detect whether the anti-theft bolt 232 is physically displaced due to external force or theft by detecting the voltage change at both ends of the anti-theft bolt 232.

[0084] This design provides physical and electrical double detection, improving the accuracy of abnormal detection and the overall safety of the system.

[0085] In one possible implementation, a stress feedback unit 233 is arranged in the anti-theft bolt 232, and the stress feedback unit 233 is connected to both ends of the anti-theft bolt 232. The stress feedback unit 233 is configured to change its resistance when the received stress exceeds a trigger threshold.

[0086] Specifically, the stress feedback unit 233 is an element that can detect stress changes and is installed in the anti-theft bolt 232.

[0087] The stress feedback unit 233 is connected to both ends of the anti-theft bolt 232. When the received stress exceeds a preset threshold, it changes its own resistance. This change can be captured by the voltage detection unit 234 and transmitted to the control unit 210.

[0088] Through the stress feedback unit 233, the mobile power supply unit anti-abnormal displacement system 200 can detect abnormal changes in mechanical stress applied to the anti-theft bolt 232, such as excessive torque or external force. This is usually caused by theft of the mobile power supply unit 240 or abnormal disassembly. This design enhances the system's ability to detect physical anomalies and provides additional security.

[0089] In one possible implementation, the stress feedback unit 233 is a strain gauge or a wire containing a preset fracture interface; the trigger threshold of the stress feedback unit 233 is a set multiple of the installation torque of the anti-theft bolt 232, and the set multiple is greater than 1.2.

[0090] Specifically, by setting the trigger threshold of the stress feedback unit 233 to be greater than the installation torque of the anti-theft bolt 232, the stress feedback unit 233 will only trigger a signal change under abnormal stress.

[0091] This design effectively distinguishes between normal use and abnormal stress, reduces the probability of false alarms, and improves the reliability of abnormal displacement detection.

[0092] In one possible implementation, an insulating layer 235 is fitted onto the middle of the outer side of the anti-theft bolt 232.

[0093] Specifically, the insulating layer 235 can be an insulating coating applied to the middle of the anti-theft bolt 232, or it can be an insulating outer layer that is sleeved with the middle of the anti-theft bolt 232.

[0094] Electrical isolation is provided by the insulating layer 235 to prevent the connection between the middle of the anti-theft bolt 232 and the outside from causing a short circuit in the anti-theft bolt voltage detection circuit 231, which would affect the detection accuracy, and to avoid false alarms caused by external current interference.

[0095] In one possible implementation, the second detection circuit 230 further includes a normally closed micro switch 236, which is connected in series with the voltage detection unit 234; the micro switch 236 is used to disconnect the circuit where the voltage detection unit 234 is located when vibration is received.

[0096] Specifically, based on the above structure, the second detection circuit 230 also provides a micro switch 236, which is connected in series with the voltage detection unit 234. When vibration is received, the circuit containing the voltage detection unit 234 will be disconnected.

[0097] When the mobile power supply unit 240 experiences strong vibration, it may be due to abnormal displacement or the entire engineering equipment 100 being in a bumpy state. If the result of the first detection circuit 220 remains unchanged, while the micro switch 236 continuously switches between the open and closed states (e.g., switching more than twice within 30 seconds), it indicates that the equipment is in a bumpy state. In this case, even if there is an abnormality in the voltage detection, the alarm unit 250 may not be triggered to prevent false alarms caused by vibration. (If the micro switch 236 is not installed, the anti-theft bolt 232 may become unstable due to the bumps, causing fluctuations in the voltage detection result and affecting the accuracy of the detection.)

[0098] If the first level signal at the output of the first detection circuit 220 changes, the micro switch 236 is turned on, or the anti-theft bolt 232 is pulled out, either of these situations will cause the voltage detection to be interrupted. In this case, it can be determined that the mobile power supply unit 240 is in an abnormal vibration state. This design improves the reliability of the system in dynamic environments.

[0099] In one possible implementation, there are at least two microswitches 236 connected in series and symmetrically arranged between the mobile power supply unit 240 and the engineering equipment 100.

[0100] Specifically, multiple microswitches 236 are connected in series ( Figure 4 , 5 (Not shown in the image) This configuration ensures that the circuit is only disconnected under specific vibration modes. This improves the system's selective response to vibration, reduces false alarms, and ensures that alarms are triggered only in genuine abnormal situations.

[0101] In one possible implementation, the alarm unit 250 includes an audible and visual alarm 251 connected to the output of the control unit 210; the audible and visual alarm 251 is configured to trigger a corresponding alarm action when it receives a second level signal output by the control unit 210.

[0102] Specifically, in combination Figure 2 As shown, through the audible and visual alarm 251, the mobile power supply unit 240 and the abnormal displacement prevention system 200 can provide an intuitive alarm signal when an anomaly is detected, reminding relevant personnel to take timely measures. This design improves the effectiveness and response speed of the alarm.

[0103] The mobile power supply unit anti-abnormal displacement system provided in this application improves the detection accuracy and safety by introducing a reference power supply and a Hall sensor. A comparator circuit compares the changes in the mobile power supply unit voltage with the reference voltage, reducing false alarms and increasing the sensitivity of abnormal displacement detection. The Hall sensor converts high-voltage electrical signals into low-voltage electrical signals, ensuring circuit safety and accurate detection. Furthermore, an anti-theft bolt detection circuit provides both physical and electrical detection, while a stress feedback unit and a voltage detection unit detect abnormal stress and voltage changes. Microswitches enhance the system's reliability in dynamic environments, reducing vibration false alarms. This combination of methods achieves a multi-level detection and false alarm prevention mechanism, improving system reliability and safety, making it suitable for various engineering equipment, and reducing the risk of equipment damage or loss due to abnormal displacement.

[0104] In the above embodiments, the division of units is merely a logical functional division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0105] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0106] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0107] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A mobile power supply unit anti-abnormal displacement system, characterized in that, include: Control unit, first detection circuit, second detection circuit, mobile power supply unit, alarm unit; The first detection circuit includes a comparator circuit, the input terminal of which is connected to the output terminal of the mobile power supply unit, and the output terminal of which is connected to the input terminal of the control unit. The second detection circuit includes an anti-theft bolt voltage detection circuit, the input terminal of which is connected to the output terminal of a reference power supply, and the output terminal of which is connected to the input terminal of the control unit. The output terminal of the control unit is connected to the alarm unit; The comparator circuit is configured to switch the first level signal output to the control unit when the voltage output of the mobile power supply unit changes, and the anti-theft bolt voltage detection circuit is configured to switch the voltage signal sent to the control unit when the voltage across the anti-theft bolt changes. The control unit is configured to switch to outputting a second level signal to the alarm unit when the input first level signal and the voltage signal change, and the alarm unit is configured to trigger a corresponding alarm action based on the received second level signal.

2. The mobile power supply unit anti-abnormal displacement system according to claim 1, characterized in that, The comparator circuit includes a comparator, an input terminal of which is connected to the output terminal of the mobile power supply unit, and an output terminal of a reference power supply. The comparator is configured to switch the first level signal output to the control unit when the difference between the voltage output by the mobile power supply unit and the voltage output by the reference power supply changes.

3. The mobile power supply unit anti-abnormal displacement system according to claim 2, characterized in that, The first detection circuit includes a Hall sensor, which is disposed between the output terminal of the mobile power supply unit and the input terminal of the comparator circuit; The Hall sensor is used to convert the high-voltage electrical signal output by the mobile power supply unit into a Hall electrical signal input to the comparator circuit.

4. The mobile power supply unit anti-abnormal displacement system according to claim 1, characterized in that, The anti-theft bolt voltage detection circuit includes an anti-theft bolt, which is mounted on the mobile power supply unit. One end of the anti-theft bolt is connected to the output terminal of the reference power supply, and the other end is connected to the grounding wire. Both ends of the anti-theft bolt are also connected to the voltage detection unit, which is connected to the input terminal of the control unit. The voltage detection unit is used to detect the voltage on both sides of the anti-theft bolt and transmit the detected voltage signal to the control unit.

5. The mobile power supply unit anti-abnormal displacement system according to claim 4, characterized in that, The anti-theft bolt is equipped with a stress feedback unit, which is connected to both ends of the anti-theft bolt. The stress feedback unit is configured to change its own resistance when the received stress exceeds a trigger threshold.

6. The mobile power supply unit anti-abnormal displacement system according to claim 5, characterized in that, The stress feedback unit is a strain gauge or a wire with a preset fracture interface; The trigger threshold of the stress feedback unit is a set multiple of the installation torque of the anti-theft bolt, and the set multiple is greater than 1.

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7. The mobile power supply unit anti-abnormal displacement system according to claim 4, characterized in that, An insulating layer is fitted on the middle of the outer side of the anti-theft bolt.

8. The mobile power supply unit anti-abnormal displacement system according to any one of claims 4 to 7, characterized in that, The second detection circuit also includes a normally closed micro switch, which is connected in series with the voltage detection unit; The micro switch is used to disconnect the circuit containing the voltage detection unit when vibration is received.

9. The mobile power supply unit anti-abnormal displacement system according to claim 8, characterized in that, There are at least two microswitches connected in series and symmetrically arranged between the mobile power supply unit and the engineering equipment.

10. The mobile power supply unit anti-abnormal displacement system according to any one of claims 1 to 7, characterized in that, The alarm unit includes an audible and visual alarm connected to the output of the control unit. The audible and visual alarm is configured to trigger a corresponding alarm action when it receives a second-level signal output by the control unit.

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