A method, system, and storage medium for tamper detection of a portable explosion-proof light.

Abstract

This application relates to the technical field of explosion-proof lamp detection, and discloses a method, system, and storage medium for tamper-proof detection of a portable explosion-proof lamp. The method includes: setting detection contacts and sensors at the detachable structure, forming a detection loop through a detection module; collecting total detection data in real time and comparing it with initial data to obtain detection change data, thereby identifying the lamp's status and the specific disassembled structure. If unauthorized disassembly is detected, a light warning is issued, with the warning brightness or flashing frequency related to the change data, and indicating the disassembled structure. The initial data can also be updated via a reset command to accommodate compliant operations. This method achieves accurate detection and location of unauthorized disassembly, provides intuitive warnings, and improves the safety and detection flexibility of explosion-proof lamps.

Description

Technical Field

[0001] This application relates to the technical field of explosion-proof lamp testing, and in particular to a method, system and storage medium for tamper-proof testing of a portable explosion-proof lamp. Background Technology

[0002] Portable explosion-proof lights, as a special type of lighting equipment, play an irreplaceable role in flammable and explosive environments such as offshore oil platforms, public security fire stations, airports, and docks. On offshore oil platforms, they can provide safe and stable lighting in environments filled with flammable materials such as oil and gas. In the public security fire sector, these lights provide reliable light source support for rescue personnel in emergency situations such as fires and explosions. In densely populated areas with flammable and explosive risks, such as airports and docks, portable explosion-proof lights provide safe lighting for equipment operation and personnel dispatch.

[0003] The safety performance of portable explosion-proof lights is closely related to the structure, materials, and assembly methods of their various components. Their explosion-proof function relies on the integrity of the overall structure and the coordinated action of each component. Therefore, arbitrary modification or replacement of components is not permitted. Any unauthorized alteration may damage the explosion-proof structure of the light fixture, leading to decreased sealing performance, increased explosion-proof gaps, and other problems. This would cause it to lose its original explosion-proof capability, making it highly susceptible to explosions, fires, and other safety accidents in flammable and explosive environments, seriously threatening the safety of people and property.

[0004] Currently, there is no detection method for portable explosion-proof lights to prevent disassembly, making it impossible to determine in a timely and accurate manner whether the light fixture has been disassembled, modified, or had its parts replaced without authorization. Summary of the Invention

[0005] In order to enable portable explosion-proof lights to have tamper-proof detection capabilities, this application provides a method, system, and storage medium for tamper-proof detection of portable explosion-proof lights.

[0006] Firstly, this application provides a method for tamper-proof testing of a portable explosion-proof light, employing the following technical solution:

[0007] A method for tamper-proof testing of a portable explosion-proof light includes the following steps:

[0008] A detection contact is provided at the detachable structure of the portable explosion-proof lamp, and a detection sensor is provided at the detection contact. When the detachable structure is disassembled, the connection state of the detection contact changes, and the detection data of the detection sensor changes.

[0009] A detection loop is formed by connecting all the detection contacts based on the detection module;

[0010] The total detection data of the detection loop is collected in real time, and the initially collected total detection data is assigned to the preset initial detection data.

[0011] The difference between the total detection data and the initial detection data is calculated as the detection change data;

[0012] The status data of the portable explosion-proof lamp is identified from a preset detection database based on the detected change data.

[0013] If the content of the status data corresponds to unauthorized disassembly, then a light warning corresponding to the unauthorized disassembly warning will be issued;

[0014] The corresponding detachable structure is identified from the status data, and a warning indication is given based on the identified detachable structure.

[0015] By adopting the above technical solution, and by setting detection contacts and sensors at the detachable structure, and combining them with the detection module to form a detection loop, the changes in the connection status of the detection contacts after the detachable structure is disassembled can be captured in real time. By comparing and analyzing the total detection data with the initial detection data, the system can accurately identify whether the lamp has been disassembled illegally and the specific structure that has been disassembled. At the same time, with the help of light prompts and targeted warnings, the information on illegal disassembly can be transmitted to relevant personnel in a timely manner, effectively solving the problem that existing portable explosion-proof lamps cannot detect unauthorized disassembly and modification.

[0016] Optionally, a detection reset instruction is obtained, and in response to the detection reset instruction, the total detection data is updated, and the updated total detection data is assigned to the initial detection data.

[0017] By adopting the above technical solution, the updated total test data is reset to the initial test data through the test reset command, avoiding misjudging compliant operations as illegal disassembly, and greatly improving the flexibility and practicality of the test method.

[0018] Optionally, the detection contact is a normally open contact; when the detachable structure is disassembled, the normally open contact closes and short-circuits; the detection sensor is a detection resistor; the normally open contact is connected in parallel with the detection resistor; and the resistance value of each detection resistor corresponds to a different order of magnitude.

[0019] All the normally open contacts are connected in series to form a first detection circuit;

[0020] The total resistance value of the first detection circuit is collected in real time as the first total detection data, and the first total detection data collected initially is assigned to the preset initial detection data; each bit of the total resistance value corresponds to one of the detachable structures.

[0021] The difference between the first total detection data and the initial detection data is calculated as the first detection change data, which is the decrease in resistance value;

[0022] Based on the first detected change data, the status data of the portable explosion-proof lamp is identified from the preset detection database, and each bit of the reduced resistance value corresponds to a detachable structure that has been illegally disassembled.

[0023] Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

[0024] By adopting the above technical solution, and setting the detection contacts as normally open contacts, and pairing them with detection resistors of different orders of magnitude connected in parallel with the normally open contacts to form a first detection circuit, each detachable structure corresponds to a unique resistance change indicator. When a detachable structure is disassembled, the corresponding normally open contact closes and short-circuits, causing the total resistance value to decrease by the resistance value of the corresponding detection resistor, and the number of digits of the decreased resistance value corresponds one-to-one with the disassembled structure; not only can the change in the total resistance value accurately determine whether there has been unauthorized disassembly, but the specific disassembled structure can also be quickly located by the number of digits corresponding to the different orders of magnitude of resistors.

[0025] Optionally, the step of issuing a warning for unauthorized disassembly may further include the following sub-steps:

[0026] An indicator light is connected in series in the first detection circuit, and a normally closed control switch is connected in parallel to the indicator light;

[0027] In response to the warning of unauthorized disassembly, the control switch is disconnected, the indicator light illuminates, and its brightness is positively correlated with the first detected change data. The larger the first detected change data, the brighter the light; the smaller the first detected change data, the dimmer the light.

[0028] By adopting the above technical solution, warnings of unauthorized disassembly can be visually presented through lights, quickly conveying warning information without the need for additional complex equipment. This is especially beneficial in special scenarios such as flammable and explosive environments where portable explosion-proof lights are used, allowing relevant personnel to detect abnormalities immediately. The brightness of the warning light changes with the initial detection data, meaning that the brightness can indirectly reflect the extent of unauthorized disassembly. The more detachable structures are disassembled or the higher the corresponding detection resistor value, the brighter the light. Relevant personnel can roughly judge the scope and severity of the impact of unauthorized disassembly based on the brightness, thus enabling more targeted subsequent inspection and handling measures.

[0029] Optionally, the step of issuing a warning for unauthorized disassembly may further include the following sub-steps:

[0030] The disconnection frequency of the control switch is adjusted according to the positive correlation of the first detected change data. The larger the first detected change data, the higher the disconnection frequency and the faster the indicator light flashes; the smaller the first detected change data, the lower the disconnection frequency and the slower the indicator light flashes.

[0031] By adopting the above technical solution, the larger the first detection change data, the more serious the degree of unauthorized disassembly. For example, the more disassembled structures or the more obvious the corresponding resistance change, the faster the indicator light flashes, enabling a stronger visual signal to quickly convey information about serious violations. Conversely, when the first detection change data is small, the flashing is slower, corresponding to a minor violation. This allows relevant personnel to intuitively judge the severity of unauthorized disassembly simply by observing the rhythm of the light flashing, without needing to view specific data. This is especially effective in complex flammable and explosive work environments, allowing for a quick identification of key warning points.

[0032] Optionally, the detection contact is a normally closed contact; when the detachable structure is disassembled, the normally closed contact opens to break the circuit, the detection sensor is a detection resistor, the normally closed contact is connected in parallel with the detection resistor, and the resistance value of each detection resistor corresponds to a different order of magnitude;

[0033] All the normally closed contacts are connected in series to form a second detection circuit;

[0034] The total resistance value of the second detection circuit is collected in real time as the second total detection data, and the second total detection data collected initially is assigned to the preset initial detection data; each bit of the total resistance value corresponds to one of the detachable structures;

[0035] The difference between the second total detection data and the initial detection data is calculated as the second detection change data, which is the increased resistance value.

[0036] Based on the second detection change data, the status data of the portable explosion-proof lamp is identified from the preset detection database. Each bit of the increased resistance value corresponds to a detachable structure that has been illegally disassembled.

[0037] Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

[0038] By adopting the above technical solution, when the detachable structure is disassembled, the normally closed contact opens to break the circuit, and the corresponding parallel detection resistor is connected to the circuit, increasing the total resistance value. Since the increase in resistance value varies depending on the order of magnitude of the detection resistors, each digit corresponds one-to-one with the illegally disassembled detachable structure. This allows the detection to accurately determine whether the lamp has been illegally disassembled and precisely locate the specific disassembled structure, resulting in highly targeted detection. Furthermore, using the increase in total resistance value as the judgment criterion ensures a stable signal that is easy to acquire and identify. Even in the complex environment where portable explosion-proof lights are located, it maintains good detection stability and effectively avoids false judgments.

[0039] Optionally, the detection contact is a normally closed contact; when the detachable structure is disassembled, the normally closed contact is disconnected and the circuit is broken; the detection sensor is a detection capacitor; the normally closed contact and the detection capacitor are connected in series to form a detection branch; the capacitance value of each detection capacitor corresponds to a different order of magnitude.

[0040] All the detection branches are connected in parallel to form a third detection loop;

[0041] The total capacitance value of the third detection circuit is collected in real time as the third total detection data, and the third total detection data collected initially is assigned to the preset initial detection data; each bit of the total capacitance value corresponds to one of the detachable structures;

[0042] The difference between the third total detection data and the initial detection data is calculated as the third detection change data, which is the increased capacitance value;

[0043] Based on the third detection change data, the status data of the portable explosion-proof lamp is identified from the preset detection database, and each bit of the increased capacitance value corresponds to a detachable structure that has been illegally disassembled.

[0044] Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

[0045] By adopting the above technical solution, when the detachable structure is disassembled, the normally closed contact opens to break the circuit, and the corresponding parallel detection resistor is connected to the circuit, which increases the total resistance value. Moreover, the increased resistance value is of different orders of magnitude due to the different detection resistors, and each digit of the increased resistance value can correspond one-to-one with the detachable structure that has been illegally disassembled. This allows the detection to accurately determine whether the lamp has been illegally disassembled and to accurately locate the specific disassembled structure, making the detection highly targeted.

[0046] Optionally, the step of issuing a warning for unauthorized disassembly may further include the following sub-steps:

[0047] In response to the warning of unauthorized disassembly, the detection branch is disconnected from the third detection circuit and connected to the prompting module. The prompting module drives the prompting light, which illuminates and flashes at a frequency that is inversely correlated with the third detection change data. The larger the third detection change data, the lower the flashing frequency; the smaller the third detection change data, the higher the flashing frequency.

[0048] By adopting the above technical solution, the detection and warning functions can be flexibly switched, ensuring that the warning mechanism can be quickly activated after a violation is detected, so that relevant personnel can notice the abnormality in time; the flashing frequency of the indicator light changes in the opposite direction to the third detection data; the larger the change data, the more serious the degree of illegal disassembly may be. The slower the flashing and the faster the flashing, the smaller the change data, the more the flashing. It can convey different violation status information with intuitive visual rhythm, making it easy for personnel to quickly judge the approximate situation of the lamp being disassembled.

[0049] Secondly, this application provides a tamper-proof detection system for a portable explosion-proof light, employing the following technical solution:

[0050] A tamper detection system for a portable explosion-proof light includes a processor, wherein the processor performs the steps of the tamper detection method for a portable explosion-proof light as described in any of the preceding claims.

[0051] Thirdly, this application provides a storage medium, which adopts the following technical solution:

[0052] A storage medium storing a program, which, when executed by a processor, implements the steps of the tamper-proof detection method for the portable explosion-proof lamp described in any one of the preceding claims.

[0053] In summary, this application includes at least one of the following beneficial technical effects:

[0054] By setting detection contacts (normally open or normally closed contacts) and corresponding detection sensors (detection resistors of different orders of magnitude) at the detachable structure, and combining the detection circuit to collect resistance change data in real time, it is possible to accurately determine whether the portable explosion-proof light has been disassembled without authorization. Furthermore, the specific disassembled structure can be accurately located by the number of bits in the resistance change data, thus solving the problem that existing technologies cannot detect and locate unauthorized disassembly.

[0055] By using light cues (brightness changes, flashing frequency changes) to convey information about unauthorized disassembly, the brightness or frequency is correlated with the detected changes in data, intuitively reflecting the degree of unauthorized disassembly. Simultaneously, it can provide warnings for specific disassembled structures, allowing relevant personnel to quickly identify abnormalities and critical locations, improving emergency response efficiency. A detection reset command can update initial detection data, adapting to scenarios such as compliant repairs and component replacements, avoiding misjudgments of normal operations, and balancing the needs of strict monitoring with reasonable maintenance. Furthermore, the resistance-based detection logic exhibits strong stability and good anti-interference capabilities, adapting to complex operating environments such as flammable and explosive environments.

[0056] From detection and warning to adaptation and compliance operation, a complete anti-tampering monitoring mechanism has been formed, which can promptly detect unauthorized disassembly and modification, reduce safety hazards caused by damage to the explosion-proof structure, provide technical support for the safe use of portable explosion-proof lights in hazardous environments, and reduce the risk of safety accidents. Attached Figure Description

[0057] Figure 1 This is a step-by-step diagram of a portable explosion-proof light's tamper-proof testing method.

[0058] Figure 2 This is the circuit diagram of the first detection loop.

[0059] Figure 3 This is the circuit diagram of the second detection loop.

[0060] Figure 4 This is the circuit diagram of the third detection loop.

[0061] Figure 5 This is the circuit diagram of the prompt module.

[0062] Attached label: 1. Detection contact; 2. Indicator light. Detailed Implementation

[0063] The embodiments of this application are described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0064] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] This application discloses a method for tamper-proof testing of a portable explosion-proof light, referring to... Figure 1 It includes the following steps:

[0066] Based on the detachable structure of the portable explosion-proof lamp, detachable structures include the connection between the lamp cover and the lamp body, the connection between the battery compartment cover and the housing, and the cable interface end cap. Detection contacts 1 are installed at the mating surfaces or connection gaps of each detachable structure. Detection contacts 1 are made of conductive metal, such as copper sheets, and their installation position must meet the following requirements: when the detachable structure is in a normal assembly state, the contact maintains a preset connection state (normally open or normally closed); when the structure is disassembled, the contact connection state changes immediately. A detection sensor is installed at each detection contact 1. The detection sensor can be a high-precision resistance sensor, with its resistance value set to different orders of magnitude according to the importance of the corresponding detachable structure, such as 10Ω, 100Ω, 1000Ω, etc., and the sensor housing is made of explosion-proof insulating material, suitable for flammable and explosive environments. Capacitors and other components can also be used to implement the detection sensor.

[0067] A detection module containing a microcontroller or signal acquisition unit connects all detection contacts 1 and sensors, forming a closed detection loop. The signal acquisition unit of the detection module uses a differential amplifier circuit, which can effectively suppress environmental electromagnetic interference and ensure the accuracy of resistance signal acquisition. A voltage regulator module is connected in series in the loop to provide a stable operating voltage, such as 3V DC voltage, to avoid voltage fluctuations affecting the accuracy of detection data.

[0068] After the detection module is powered on, it collects the total detection data of the detection circuit in real time, i.e., the total resistance value of the circuit. The initial total detection data (at which time the lamp is in its initial assembled state without being disassembled) is automatically assigned to the preset initial detection data and stored in the detection module's storage unit, such as an EEPROM memory. The storage unit has a power-off protection function to ensure that the initial data is not lost after power failure.

[0069] The detection module continuously collects total detection data at a frequency of 10ms / time. It calculates the difference between the current total detection data and the initial detection data using a built-in algorithm to obtain the detection change data. The algorithm includes a filtering step to remove abnormal data caused by transient interference. For example, filtering is triggered when the deviation of three consecutive data collections exceeds 5%, ensuring data reliability.

[0070] The detection module has a built-in preset detection database, which stores the correspondence between different detection changes and the status of the lamp. For example, a resistance change of 10Ω corresponds to the lamp cover being removed, and a change of 100Ω corresponds to the battery compartment cover being removed. Based on the calculated detection change data, the module matches and identifies the status data of the portable explosion-proof lamp from the database. The status data includes normal status, status of unauthorized disassembly of a certain structure, etc.

[0071] If the status data corresponds to unauthorized disassembly, the detection module immediately sends a control signal to the warning module, which contains LED warning lights. The warning module is equipped with red and yellow dual-color LEDs, where red corresponds to serious violations and yellow corresponds to minor violations. The light warning duration is set to 30 seconds per occurrence until manual confirmation.

[0072] The identification information of the disassembled structure is extracted from the status data, such as the preset structure number. The detection module illuminates the indicator lights in the corresponding areas through indicator light partitions. Each disassembled structure corresponds to an indicator light, achieving accurate positioning.

[0073] The above technical solution utilizes the synergy of contacts and sensors to achieve real-time detection of disassembly, combines a high-precision detection circuit and data algorithms to ensure accurate judgment, and finally achieves risk visualization through graded warnings and location indications. This method fills the technical gap in existing portable explosion-proof lights that cannot detect unauthorized disassembly, providing full-cycle monitoring protection for the integrity of explosion-proof structures.

[0074] The detection module is equipped with a detection reset command receiving unit, which supports receiving detection reset commands through either physical triggering or encrypted signal transmission. The physical triggering method uses a dedicated reset button located in a non-removable area of ​​the portable explosion-proof light, such as within a sealed groove at the bottom of the light body. This button requires a special tool to press and trigger to avoid accidental operation. The encrypted signal transmission method is implemented through a dedicated control terminal matched with the detection module. The detection reset command sent by the control terminal must contain a preset encryption sequence (such as an 8-bit checksum). The detection module's decryption unit verifies the received signal; only after successful verification is the command considered valid.

[0075] Once the reset command receiving unit receives a valid command, the detection module immediately responds and enters the data reset mode. At this time, the detection module suspends violation warning judgment and continuously collects the total detection data of the detection loop three times at a frequency of 100ms / time. After removing outliers that deviate from the mean by more than 2%, the average value of the remaining data is taken as the updated total detection data.

[0076] The detection module automatically writes the updated total detection data to the initial detection data storage area of ​​the storage unit, overwriting the original initial detection data, and generates a data update log, which includes information such as update time, operator identification, and data values ​​before and after the update. The log data is stored in read-only mode and cannot be tampered with. After the data update is complete, the detection module sends a "reset successful" signal to the control terminal and automatically exits the data reset mode, restoring normal detection status.

[0077] Through the above design, the test reset function can only be triggered by authorized personnel through a dedicated method. This ensures the accurate updating of initial test data in compliant scenarios (such as after professional repairs), avoiding misjudging legitimate disassembly operations as violations. It also prevents malicious resets through encrypted verification and operation log mechanisms. While improving the flexibility of the test method, it also ensures the security and data traceability of the test system.

[0078] In this embodiment, there are three ways to set up the detection contact 1:

[0079] The first type is where detection contact 1 is a normally open contact:

[0080] Reference Figure 2 The detection contact 1 is a normally open contact, consisting of two separate conductive springs made of phosphor bronze with nickel plating to enhance conductivity and corrosion resistance. The springs are fixed to two connecting parts of the detachable structure. When the detachable structure is in its normal assembled state, the distance between the two springs remains 0.5-1mm, indicating an open state. When the detachable structure is disassembled and the separation distance between the two connecting parts exceeds 2mm, the springs close under their own elastic force, achieving a short circuit with the normally open contact.

[0081] The detection sensor uses a high-precision metal film resistor as the sensing resistor. This resistor has an accuracy class of ±1%, a temperature coefficient ≤50ppm / ℃, and can operate stably in an ambient temperature range of -40℃ to +60℃. The normally open contact and the sensing resistor are connected in parallel, and the resistance value of each sensing resistor is set to a different order of magnitude in powers of 10. For example, the sensing resistor corresponding to the lamp cover connection is 10Ω, the sensing resistor corresponding to the battery compartment cover is 100Ω, the sensing resistor corresponding to the cable interface end cover is 1000Ω, and so on, ensuring that each detachable structure corresponds to a unique resistance order of magnitude.

[0082] All normally open contacts are connected in series to form the first detection circuit. A sampling resistor with 0.1% accuracy is connected in series in the circuit to assist in the accurate acquisition of the total resistance value. The first detection circuit is connected to the signal acquisition port of the detection module. The acquisition port has a built-in 24-bit A / D converter with a sampling rate of 10 times / second, which can control the acquisition error of the total resistance value within ±0.01Ω.

[0083] The total resistance value of the first detection circuit is collected in real time as the first total detection data. Within 3 seconds after the lamp is first powered on, the detection module continuously collects the total resistance value 5 times, removes the maximum and minimum values, and takes the average value. This average value is assigned to the preset initial detection data and stored. Each digit of the total resistance value (ones digit, tens digit, hundreds digit, etc.) corresponds one-to-one with the detachable structure through a preset mapping table. For example, the ones digit corresponds to the lamp cover connection part, and the tens digit corresponds to the battery compartment cover, etc.

[0084] When the detachable structure is improperly disassembled, the corresponding normally open contact closes and short-circuits, the detection resistor is short-circuited, and the first total detection data decreases accordingly. The difference between the first total detection data and the initial detection data is calculated to obtain the first detection change data, which is the reduced resistance value. Since the resistance values ​​of each detection resistor are on different orders of magnitude, the number of digits in the reduced resistance value will show a specific change; for example, a reduction of 10Ω corresponds to a change in the units digit, and a reduction of 100Ω corresponds to a change in the tens digit.

[0085] The preset detection database stores the resistance change characteristic values ​​corresponding to each detachable structure. The detection module compares the first detected change data with the characteristic values ​​to identify the status data. At the same time, the detection module is connected to a positioning indicator panel composed of multiple LED indicators. Each indicator corresponds to a detachable structure. When a structure that has been illegally disassembled is identified, the corresponding indicator light illuminates and flashes at a frequency of 1 time per second for quick location.

[0086] This structural design can accurately detect unauthorized dismantling activities and quickly pinpoint specific locations, providing precise information for subsequent handling.

[0087] The steps for issuing a warning about unauthorized disassembly also include the following sub-steps:

[0088] The first detection circuit includes a warning light 2 connected in series. This warning light 2 uses explosion-proof LED beads, emits red light, meets the visual requirements of dangerous warning scenarios, and has an explosion-proof housing, allowing for safe use in flammable and explosive environments. A normally closed control switch is connected in parallel to the warning light 2. The control switch uses an electromagnetic relay with silver alloy contacts, a contact resistance ≤50mΩ, and a dustproof and waterproof housing, making it suitable for humid and dusty environments.

[0089] Once the detection module identifies unauthorized disassembly and generates an unauthorized disassembly warning signal, it immediately sends a drive signal to the control switch. Within 10ms of receiving the signal, the control switch opens its normally closed contact, at which point indicator light 2 connects to the first detection circuit and begins to illuminate. The detection module has a built-in PWM (Pulse Width Modulation) adjustment unit, which adjusts the duty cycle of the output pulse in real time based on the first detection change data: when the first detection change data is 10Ω (corresponding to the disassembly of a single basic structure), the duty cycle is set to 30%, and the brightness of indicator light 2 is 300cd; when the change data is 110Ω (corresponding to the disassembly of two structures), the duty cycle increases to 60%, and the brightness increases to 600cd; when the change data reaches 1000Ω or higher, the duty cycle is set to 100%, and the brightness reaches a maximum of 1000cd, achieving a positive correlation between brightness and the first detection change data.

[0090] Simultaneously, the frequency adjustment unit of the detection module adjusts the disconnection frequency of the control switch based on the first detected change data. This unit has a built-in frequency mapping table. When the change data is 10Ω, the switch disconnection frequency is set to 1 time / second, with a flashing period of 2 seconds; when the change data is 100Ω, the frequency increases to 2 times / second, with a flashing period of 1 second; and when the change data is 1000Ω, the frequency reaches 5 times / second, with a flashing period of 0.4 seconds. The control switch's response time is ≤20ms, ensuring that the adjustment accuracy of the flashing frequency does not exceed ±0.1 times / second.

[0091] Furthermore, the indicator light 2 will remain illuminated until the detection module receives a manual confirmation signal (triggered by a dedicated reset button) or detects the reassembly of a disassembled structure (corresponding to the detection data returning to the initial range). During the continuous illumination, the detection module verifies the first detection change data every 5 seconds. If the data changes, such as the addition of a disassembled structure, the brightness and flashing frequency are updated in real time to ensure the synchronization of the warning information with the actual violation status.

[0092] With this design, the warning light 2 can intuitively reflect the cumulative degree of illegal dismantling through changes in brightness, and can also convey the degree of urgency through flashing frequency. All components meet the requirements for explosion-proof and environmental resistance, ensuring that it can play a stable warning role in dangerous scenarios such as oil platforms and chemical plant areas, allowing on-site personnel to quickly judge the violation situation by visual observation without relying on professional equipment.

[0093] The second type is where detection contact 1 is a normally closed contact:

[0094] Reference Figure 3 The detection contact 1 adopts a normally closed contact design, consisting of two closely fitted conductive copper sheets. The copper sheets are gold-plated to a thickness of 0.2mm to reduce contact resistance and improve oxidation resistance. The normally closed contacts are fixed to the two mating surfaces of the detachable structure. When the detachable structure is in a normal assembly state, the two copper sheets are in close contact under the pressure of the structure, maintaining a conductive state. When the detachable structure is disassembled, and the separation distance between the two mating surfaces exceeds 1mm, the copper sheets naturally spring open after losing pressure, and the normally closed contacts open to break the circuit.

[0095] The detection sensor uses a resistor as the sensing resistor. The normally closed contact and the sensing resistor are connected in parallel. The resistance value of each sensing resistor is set to a different order of magnitude in integer powers of 10. For example, the sensing resistor corresponding to the lamp holder connection is 10Ω, the sensing resistor corresponding to the power interface cover is 100Ω, and the sensing resistor corresponding to the control panel cover is 1000Ω, etc. The resistance value error of each resistor is strictly controlled within ±0.05Ω to ensure the unique identification of the resistance value.

[0096] A second detection circuit is formed by connecting all normally closed contacts in series. A reference resistor with an accuracy of 0.01% is connected in series in this circuit to calibrate the accuracy of the total resistance value acquisition. The second detection circuit uses double-insulated wires; the outer layer of the wire is made of acid and alkali resistant polytetrafluoroethylene (PTFE), and the inner layer is a tin-plated copper wire shielding layer, effectively resisting external electromagnetic interference. The detection circuit is connected to the dedicated acquisition port of the detection module, which is equipped with a 16-bit A / D converter and a sampling frequency set to 20 times per second.

[0097] The total resistance value of the second detection circuit is collected in real time as the second total detection data. After the lamp is initially assembled and powered on for the first time, the detection module will continuously collect the total resistance value 10 times within 5 seconds. After removing outliers through a digital filtering algorithm, the average value is calculated and assigned to the preset initial detection data and stored in non-volatile memory. Each digit of the total resistance value (ones digit, tens digit, hundreds digit, etc.) corresponds one-to-one with the detachable structure through a preset encoding rule. For example, the ones digit corresponds to the lamp head connection part, and the tens digit corresponds to the power interface cover, etc.

[0098] When the detachable structure is improperly disassembled, the corresponding normally closed contact opens, breaking the circuit. The previously short-circuited detection resistor is then connected to the second detection circuit, causing the second total detection data to rise. The difference between the second total detection data and the initial detection data is calculated to obtain the second detection change data, which represents the increased resistance value. Since each detection resistor has a different order of magnitude, the number of digits in the increased resistance value will exhibit specific changes; for example, an increase of 10Ω corresponds to a change in the units digit, and an increase of 100Ω corresponds to a change in the tens digit.

[0099] The pre-set detection database stores the resistance increment feature codes corresponding to each detachable structure. The detection module compares and matches the second detection change data with the feature codes to identify the status data of the portable explosion-proof light. The detection module is connected to a positioning display board composed of multiple miniature indicator lights. Each indicator light is labeled with the name of the corresponding detachable structure. When a structure that has been illegally disassembled is identified, the corresponding indicator light will flash at a frequency of 1.5 times per second, and at the same time, the indicator light will emit a yellow light with a brightness of 200 cd to facilitate quick location by personnel.

[0100] Furthermore, all connection points of the second detection circuit are sealed with explosion-proof sealant. The sealant has a temperature resistance range of -40℃ to +150℃ and a hardness of Shore A80 after curing, effectively preventing dust and moisture from entering the nodes. This design, utilizing the synergistic effect of normally closed contacts and detection resistors, not only accurately detects unauthorized disassembly but also precisely locates the disassembled structure based on the number of digits of the resistance increment. It maintains stable detection performance in various complex environments, providing reliable assurance for the safe use of portable explosion-proof lights.

[0101] The third type is where detection contact 1 is a normally closed contact:

[0102] Reference Figure 4 The detection contact 1 adopts a normally closed contact design, consisting of two beryllium copper elastic contact pieces. The contact pieces are silver-plated to reduce contact resistance, and the contact piece spacing is precisely set to 0.3mm to ensure reliable conduction under structural pressure during normal assembly of the portable explosion-proof lamp. The normally closed contacts are respectively embedded in the mating surfaces of detachable structures, such as the junction of the battery cover and the lamp body, the connection of the lamp cover latch, and the cable interface sealing cover. When the structure is disassembled and the separation distance between the mating surfaces exceeds 0.8mm, the contact pieces break under their own elastic force, forming an open circuit.

[0103] The detection sensor uses a high-precision ceramic capacitor made of NPO material, which has excellent temperature stability. Each detection branch consists of a normally closed contact connected in series with the detection capacitor. The capacitance value of each detection capacitor is set to different orders of magnitude in powers of 10, for example: 10nF for the battery cover, 100nF for the lamp cover latch, and 1000nF for the cable interface. The capacitance value deviation is strictly controlled within ±0.5nF to ensure that each detachable structure corresponds to a unique capacitance characteristic.

[0104] All detection branches are connected in parallel to form a third detection loop. The main line of the loop uses shielded twisted-pair cable with a shielding coverage of ≥95%, which can effectively resist the influence of external electromagnetic interference on capacitance detection. The two ends of the loop are connected to the capacitance acquisition unit of the detection module. This unit uses a multivibrator circuit based on a 555 timer to indirectly calculate the total capacitance value by measuring the oscillation frequency. The sampling frequency is set to 5 times / second to ensure the timeliness and accuracy of data acquisition.

[0105] The total capacitance value of the third detection loop is collected in real time as the third total detection data. After the lamp is powered on for the first time, the detection module continuously collects the total capacitance value 8 times. After removing accidental interference data through moving average filtering, the result is assigned to the preset initial detection data and stored in the FRAM memory to ensure the stable preservation of the initial reference data. The number of digits of the total capacitance value (units, tens, hundreds, nF) corresponds one-to-one with the detachable structure through a preset mapping table. For example, the units digit corresponds to the battery cover, and the tens digit corresponds to the lamp cover latch, etc., providing a clear basis for subsequent positioning.

[0106] When a detachable structure is improperly disassembled, the normally closed contact of the corresponding detection branch opens, and the detection capacitor is connected to the third detection circuit. The total capacitance value increases with the number of connected capacitors. The difference between the third total detection data and the initial detection data is calculated to obtain the third detection change data, i.e., the increased capacitance value. Since the capacitance values ​​of each detection capacitor are of different orders of magnitude, the change in the number of digits of the increment has a clear directionality. For example, an increase of 10nF corresponds to a change in the units digit, and an increase of 100nF corresponds to a change in the tens digit. This characteristic allows for precise location of the disassembled structure.

[0107] The pre-set detection database stores a relationship model between each capacitance increment and the corresponding structure. The detection module can quickly identify the specific structure that has been illegally disassembled by comparing the third detection change data with the model parameters. The positioning indicator adopts a ring-shaped LED light strip design, with the light strip arranged around the circumference of the lamp housing. Each detachable structure corresponds to an independent light segment. When the disassembled structure is identified, the corresponding light segment flashes at a frequency of 2Hz, emitting orange light (brightness 350cd), achieving intuitive visual positioning.

[0108] The capacitance acquisition circuit of the detection module is equipped with an overvoltage protection unit to prevent damage to components from static electricity or surges. This design utilizes the stable characteristics of capacitance to maintain detection accuracy even in harsh environments such as high humidity and dust. Furthermore, the capacitor components experience no mechanical wear, significantly improving the service life and reliability of the detection system. This provides a stable and reliable technical solution for tamper-proof monitoring of portable explosion-proof lights.

[0109] In the process of issuing a warning for unauthorized disassembly, the warning mechanism for the third detection circuit is set up with the following specific sub-steps:

[0110] Once the detection module identifies unauthorized disassembly and generates an unauthorized disassembly warning, it immediately sends a control signal to the switching unit located between the third detection circuit and the alert module. The switching unit uses an explosion-proof electromagnetic relay group, with one independent relay corresponding to each detection branch. The relay response time is ≤20ms, ensuring rapid switching. In response to the warning signal, the relay contacts of the switching unit actuate, mechanically disconnecting the detection branch identified as having been illegally disassembled from the third detection circuit, severing its connection to the capacitance acquisition unit. Simultaneously, the detection branch is connected to the drive circuit of the alert module, achieving physical isolation between the detection and warning circuits and preventing mutual interference.

[0111] The indicator module consists of a driver chip, a current-limiting resistor, and indicator light 2. The driver chip is an LED driver IC with overcurrent protection. Indicator light 2 uses explosion-proof LED beads and emits red light to ensure clear visibility even in bright light. The driver chip communicates with the microcontroller of the detection module via an I2C bus to receive real-time data on third-party detection changes, namely the increased capacitance value.

[0112] The flashing frequency of indicator light 2 is dynamically adjusted by the driver chip based on the received third detection change data. The specific adjustment logic is preset in the driver chip's firmware: when the third detection change data is 10nF, corresponding to the disassembly of a single basic structure, the flashing frequency is set to 5Hz, that is, flashing once every 0.2 seconds; when the data is 110nF, corresponding to the disassembly of two structures, the frequency drops to 2Hz, that is, flashing once every 0.5 seconds; when the data reaches 1000nF or above, the frequency drops to 1Hz, that is, flashing once every 1 second, strictly following the inverse correlation rule that "the larger the third detection change data, the lower the flashing frequency".

[0113] In addition, the warning module is equipped with a continuous warning duration control. Before the disassembled structure is detected to be reassembled or a manual reset signal is received, the warning light 2 will maintain a flashing state at the corresponding frequency, and the brightness pulse will increase once every 30 seconds to prevent personnel from ignoring the warning. Specifically, when the disassembled structure is reassembled, the capacitance value of the corresponding detection branch is switched from the warning module back to the third detection circuit and the total capacitance value is restored to the initial range; the manual reset signal is triggered by a dedicated explosion-proof button; the brightness of the brightness pulse that increases once every 30 seconds is increased to 150% of the rated value and lasts for 0.5 seconds.

[0114] By physically switching the detection and warning functions, the system avoids the impact of the warning circuit on the accuracy of the capacitor detection, and conveys the degree of violation information through clear frequency change rules. Rapid flashing corresponds to minor violations, while slow flashing corresponds to serious violations, allowing on-site personnel to intuitively judge the risk level without professional equipment. At the same time, all components meet the requirements for explosion protection and environmental resistance, making it suitable for use in dangerous scenarios such as oil platforms.

[0115] This application also discloses a tamper-proof detection system for a portable explosion-proof lamp, including a processor, wherein the processor executes the steps of the tamper-proof detection method for the portable explosion-proof lamp as described in any of the above embodiments.

[0116] This application also discloses a storage medium storing a program, which, when executed by a processor, implements the steps of the tamper detection method for the portable explosion-proof lamp described in any of the above embodiments.

[0117] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for tamper-proof testing of a portable explosion-proof light, characterized in that, Includes the following steps: A detection contact (1) is provided at the detachable structure of the portable explosion-proof lamp, and a detection sensor is provided at the detection contact (1); when the detachable structure is disassembled, the connection state of the detection contact (1) changes, and the detection data of the detection sensor changes. A detection circuit is formed by connecting all the detection contacts (1) based on the detection module; The total detection data of the detection loop is collected in real time, and the initially collected total detection data is assigned to the preset initial detection data. The difference between the total detection data and the initial detection data is calculated as the detection change data; The status data of the portable explosion-proof lamp is identified from a preset detection database based on the detected change data. If the content of the status data corresponds to unauthorized disassembly, then a light warning corresponding to the unauthorized disassembly warning will be issued; The corresponding detachable structure is identified from the status data, and a warning indication is given based on the identified detachable structure.

2. The tamper-proof detection method for the portable explosion-proof lamp according to claim 1, characterized in that, Obtain a detection reset command, and in response to the detection reset command, update the total detection data and assign the updated total detection data to the initial detection data.

3. The tamper-proof detection method for the portable explosion-proof lamp according to claim 1, characterized in that, The detection contact (1) is a normally open contact; when the detachable structure is disassembled, the normally open contact closes and short-circuits; the detection sensor is a detection resistor; the normally open contact is connected in parallel with the detection resistor; the resistance value of each detection resistor corresponds to a different order of magnitude. All the normally open contacts are connected in series to form a first detection circuit; The total resistance value of the first detection circuit is collected in real time as the first total detection data, and the first total detection data collected initially is assigned to the preset initial detection data; each bit of the total resistance value corresponds to one of the detachable structures. The difference between the first total detection data and the initial detection data is calculated as the first detection change data, which is the decrease in resistance value; Based on the first detected change data, the status data of the portable explosion-proof lamp is identified from the preset detection database, and each bit of the reduced resistance value corresponds to a detachable structure that has been illegally disassembled. Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

4. The tamper-proof detection method for the portable explosion-proof lamp according to claim 3, characterized in that, The steps for issuing a warning about unauthorized disassembly also include the following sub-steps: An indicator light (2) is connected in series in the first detection circuit, and a normally closed control switch is connected in parallel to the indicator light (2); In response to the warning of unauthorized disassembly, the control switch is disconnected, and the indicator light (2) illuminates with a brightness that is positively correlated with the first detected change data. The larger the first detected change data, the brighter the brightness; the smaller the first detected change data, the dimmer the brightness.

5. The tamper-proof detection method for the portable explosion-proof lamp according to claim 4, characterized in that, The step of issuing a warning for unauthorized disassembly also includes the following sub-steps: The disconnection frequency of the control switch is adjusted according to the positive correlation of the first detected change data. The larger the first detected change data, the higher the disconnection frequency and the faster the indicator light (2) flashes; the smaller the first detected change data, the lower the disconnection frequency and the slower the indicator light (2) flashes.

6. The tamper-proof detection method for the portable explosion-proof lamp according to claim 1, characterized in that, The detection contact (1) is a normally closed contact; when the detachable structure is disassembled, the normally closed contact opens to break the circuit, the detection sensor is a detection resistor, the normally closed contact is connected in parallel with the detection resistor, and the resistance value of each detection resistor is of a different order of magnitude. All the normally closed contacts are connected in series to form a second detection circuit; The total resistance value of the second detection circuit is collected in real time as the second total detection data, and the second total detection data collected initially is assigned to the preset initial detection data; each bit of the total resistance value corresponds to one of the detachable structures; The difference between the second total detection data and the initial detection data is calculated as the second detection change data, which is the increased resistance value. Based on the second detection change data, the status data of the portable explosion-proof lamp is identified from the preset detection database. Each bit of the increased resistance value corresponds to a detachable structure that has been illegally disassembled. Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

7. The tamper-proof detection method for the portable explosion-proof lamp according to claim 1, characterized in that, The detection contact (1) is a normally closed contact; when the detachable structure is disassembled, the normally closed contact is disconnected and the circuit is broken. The detection sensor is a detection capacitor. The normally closed contact and the detection capacitor are connected in series to form a detection branch. The capacitance value of each detection capacitor corresponds to a different order of magnitude. All the detection branches are connected in parallel to form a third detection loop; The total capacitance value of the third detection circuit is collected in real time as the third total detection data, and the third total detection data collected initially is assigned to the preset initial detection data. Each digit of the total capacitance value corresponds one-to-one with one of the detachable structures; The difference between the third total detection data and the initial detection data is calculated as the third detection change data, which is the increased capacitance value; Based on the third detection change data, the status data of the portable explosion-proof lamp is identified from the preset detection database, and each bit of the increased capacitance value corresponds to a detachable structure that has been illegally disassembled. Warning signs should be issued for detachable structures that have been dismantled in violation of regulations.

8. The tamper-proof detection method for the portable explosion-proof lamp according to claim 7, characterized in that, The steps for issuing a warning about unauthorized disassembly also include the following sub-steps: In response to the warning of unauthorized disassembly, the detection branch is cut out from the third detection circuit and the detection branch is switched into the prompting module. The prompting module is used to drive the prompting light (2). The prompting light (2) emits light and the flashing frequency is inversely correlated with the third detection change data. The larger the third detection change data, the lower the flashing frequency; the smaller the third detection change data, the higher the flashing frequency.

9. A tamper-proof detection system for a portable explosion-proof light, characterized in that, Includes a processor, wherein the processor performs the steps of the tamper detection method for a portable explosion-proof lamp as described in any one of claims 1-8.

10. A storage medium, characterized in that, The storage medium stores a program, which, when executed by a processor, implements the steps of the tamper-proof detection method for the portable explosion-proof lamp according to any one of claims 1-8.

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