A safety detection method for mechanical and electrical engineering devices in a cigarette factory

Abstract

The application discloses a kind of cigarette factory electromechanical engineering device safety detection methods, comprising: the suction negative pressure value of suction cup is obtained, based on the suction state of the suction cup whether the suction state is qualified is judged based on preset negative pressure threshold and the suction negative pressure value;Get the clamping state signal of the clamp of connecting line, based on the clamping state of the connecting line whether the clamping state is qualified is judged based on preset clamping threshold and the clamping state signal;Get the sealing detection signal of top cover, based on the sealing state of the top cover whether the sealing state is qualified is judged based on preset sealing threshold and the sealing detection signal;If the suction state, clamping state and sealing state are all qualified, power supply closing control instruction is generated, and the power supply is controlled to power engineering device;If at least one of the system state, clamping state and sealing state is unqualified, power supply disconnecting control instruction is generated, and the power supply is controlled to disconnect.

Description

Technical Field

[0001] The embodiments of the present invention relate to detection technology, and more particularly to a safety detection method for electromechanical engineering devices in a cigarette factory. Background Technology

[0002] In the field of electromechanical engineering, the operational safety of various electromechanical devices is directly related to the personal safety of testing personnel, the service life of the equipment itself, and the accuracy of testing data. During operation, such electromechanical engineering devices typically require suction cups to adsorb and fix the device to the component being tested, clamps to hold and position the connecting wires, and a top cover and sealing structure to seal and protect the core components inside the device. The reliability of these three states (adsorption state, clamping state, and sealing state) is the core prerequisite for the safe and stable operation of the device.

[0003] Currently, the safety inspection methods for existing electromechanical engineering devices are relatively simple. Most of them rely on manual visual inspection or single sensor detection to determine the three key states of adsorption, clamping, and sealing. Furthermore, they lack a complete power supply linkage control logic, resulting in many safety hazards and deficiencies. Summary of the Invention

[0004] This invention provides a safety inspection method for electromechanical engineering devices in a cigarette factory, aiming to solve at least one defect in the existing technology.

[0005] This invention provides a method for safety inspection of electromechanical engineering equipment in a cigarette factory, comprising:

[0006] Obtain the suction negative pressure value of the suction cup, and determine whether the suction state of the suction cup is qualified based on the preset negative pressure threshold and the suction negative pressure value;

[0007] The clamping status signal of the clamping plate of the connecting wire is obtained, and the clamping status of the connecting wire is judged to be qualified based on the preset clamping threshold and the clamping status signal.

[0008] Obtain the sealing detection signal of the top cover, and determine whether the sealing status of the top cover is qualified based on the preset sealing threshold and the sealing detection signal;

[0009] If the adsorption state, clamping state, and sealing state are all qualified, a power supply closing control command is generated to control the power supply to the engineering device; if at least one of the system state, clamping state, and sealing state is unqualified, a power supply disconnection control command is generated to control the power supply to disconnect.

[0010] Optionally, determining whether the suction state of the suction cup is qualified based on a preset negative pressure threshold and the suction negative pressure value includes:

[0011] The adsorption negative pressure value is sampled within the sampling period, and it is determined whether the adsorption negative pressure value within the sampling period is greater than the preset negative pressure threshold, and whether the cumulative duration for which the adsorption negative pressure value is greater than the negative pressure threshold is greater than the preset duration.

[0012] If the cumulative duration is greater than the preset duration, the adsorption state is determined to be qualified.

[0013] Optionally, it also includes determining whether the adsorption negative pressure value drops during the sampling period, and whether the drop is greater than a preset hysteresis when the drop occurs;

[0014] If the cumulative duration is greater than the preset duration and the drop is less than the preset hysteresis, then the adsorption state is qualified.

[0015] Optionally, each connecting cable is configured with one set of clamping plates. Determining whether the clamping state of the connecting cable is qualified based on a preset clamping threshold and the clamping state signal includes:

[0016] Each of the connecting lines has an independent clamping status signal. When the clamping status of a connecting line is determined to be qualified, a connection control command is generated to allow the current connecting line to enter the detection loop.

[0017] Optionally, the sealing detection signal includes one or more of the following: sealing gasket compression displacement signal, top cover locking torque signal, and top cover locking rotation angle signal;

[0018] When the sealing gasket compression displacement signal is within the preset target range, or when the top cover locking torque signal and the top cover locking rotation angle signal reach preset values, the sealing state is determined to be qualified.

[0019] Optionally, it also includes acquiring monitoring information and determining whether the negative pressure sensor, clamping sensor, and sealing sensor are malfunctioning based on the monitoring information;

[0020] When at least one of the negative pressure sensor, clamping sensor, and sealing sensor malfunctions, a safety degradation mode switching control command is generated to control the engineering device to switch to the safety degradation mode.

[0021] The negative pressure sensor is used to collect the adsorption negative pressure value, the clamping sensor is used to collect the clamping status signal, and the sealing sensor is used to collect the sealing detection signal.

[0022] Optionally, it also includes acquiring sensor power-on self-test information, and determining whether at least one of the negative pressure sensor, clamping sensor, and sealing sensor is malfunctioning based on the sensor power-on self-test information;

[0023] When at least one sensor malfunctions, a lock-on power-on control command is generated to prevent the engineering device from being powered on.

[0024] Optionally, after acquiring the clamping status signal, the method further includes: sampling and filtering the clamping status signal, performing state machine debouncing on the clamping status signal, and using the filtered and debouncing clamping status signal to determine whether the clamping status of the connecting line is qualified.

[0025] Optionally, it includes at least three negative pressure sensors, at least three clamping sensors, and at least three sealing sensors;

[0026] For each type of sensor, the monitoring information includes the sensor information of each sensor. If the sensor information of at least two sensors is not abnormal, it is determined that there is no abnormality in that type of sensor.

[0027] Optionally, for each type of sensor, the sensor power-on self-test information includes open circuit detection information, short circuit detection information, zero drift detection information, and threshold parameter verification information.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention proposes a safety inspection method for electromechanical engineering devices in cigarette factories. In this method, the quantitative judgment of the adsorption, clamping, and sealing states is automatically completed. The qualified status of the three states of adsorption, clamping, and sealing is taken as a prerequisite for powering on the engineering device. Powering on is prohibited if any state fails. Moreover, the failure of a state during the inspection process will immediately trigger a power cut-off. This can avoid problems such as device slippage and overturning due to adsorption failure, poor contact caused by loose clamping, and short circuit caused by water ingress due to inadequate sealing. It significantly reduces the safety risks of electric shock to on-site inspection personnel and equipment damage, and achieves inherent safety control in the inspection process. Attached Figure Description

[0029] Figure 1 This is a flowchart of the safety testing method for electromechanical engineering equipment in a cigarette factory as described in the embodiments;

[0030] Figure 2 This is a schematic diagram of the overall structure of the engineering device in the embodiment;

[0031] Figure 3 This is a schematic diagram of the arrangement of the clamping plate and the clamping status detection component in the embodiment;

[0032] Figure 4 This is a schematic diagram of the arrangement of the suction cup and negative pressure detection component in the embodiment;

[0033] Figure 5 This is a schematic diagram of the arrangement of the top cover and the sealing detection component in the embodiment. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0035] Figure 1 This is a flowchart of the safety inspection method for electromechanical equipment in a cigarette factory as described in the embodiments. (Refer to...) Figure 1 Safety inspection methods for electromechanical equipment in cigarette factories include:

[0036] S101. Obtain the suction negative pressure value of the suction cup, and determine whether the suction state of the suction cup is qualified based on the preset negative pressure threshold and the suction negative pressure value.

[0037] In this design, the suction cup is a negative pressure adsorption suction cup, used to stabilize the engineering device and prevent it from slipping or tipping over. After the suction cup is attached to the testing platform where the engineering device is placed, a sealed negative pressure cavity is formed by removing the gas between the suction cup and the platform. Atmospheric pressure is then used to adsorb the engineering device onto the testing platform (such as a cement platform, metal operating table, insulating board, etc.).

[0038] The suction cup can be mechanically connected to the bottom of the engineering device. The inner cavity of the suction cup is connected to the negative pressure chamber channel. A one-way valve is connected in series on the negative pressure chamber channel to allow gas to be discharged from the suction cup, thereby forming a negative pressure. A pressure relief valve is also installed in the negative pressure chamber channel to allow outside air to enter the suction cup quickly, so as to realize the rapid release of the suction cup.

[0039] The negative pressure chamber channel is also equipped with a negative pressure detection component (such as a pressure sensor), which is used to collect the negative pressure value of the negative pressure chamber formed by the suction cup and the detection table.

[0040] The negative pressure detection component is electrically connected to the control module. The negative pressure detection component converts the collected adsorption negative pressure value into an electrical signal and transmits it to the control module. The control module determines whether the adsorption state of the suction cup is qualified based on the preset negative pressure threshold.

[0041] S102. Obtain the clamping status signal of the clamping plate of the connecting cable, and determine whether the clamping status of the connecting cable is qualified based on the preset clamping threshold and the clamping status signal.

[0042] In this scheme, the connecting line is used for the electrical connection between the engineering device and the electromechanical equipment under test. The specific configuration of the connecting line is to transmit the detection excitation signal to the electromechanical equipment under test and provide it with a signal source; and to transmit the electrical parameters of the electromechanical equipment under test (such as insulation resistance, grounding resistance, leakage current, voltage, current value, etc.) back to the engineering device.

[0043] In this design, clamps are used to hold the connecting wires, ensuring a stable physical fit and electrical connection between the connecting wires and the connection holes on the engineering device, thus preventing the connecting wires from coming loose during testing. The clamps may include a first clamp, a second clamp, and a locking element. The first and second clamps are of a mating structure, and the locking element is used to engage and drive the first and second clamps to mat against each other.

[0044] In this solution, the clamping plate works in conjunction with the clamping status detection component (such as strain gauges or displacement sensors) to achieve quantitative detection of the clamping status of the connecting wire. During the clamping process, the clamping plate generates a corresponding clamping force. The force-bearing surface of the clamping plate directly contacts the clamping status detection component, thereby physically transmitting the clamping force or displacement to the component.

[0045] In this solution, the control module is electrically connected to the clamping status detection component. The clamping status signal collected by the clamping status detection component indirectly determines whether the clamping status of the connecting wire is qualified. If the clamping force of the clamping plate reaches the preset clamping threshold, it means that the connecting wire is reliably fixed; otherwise, it means that the connecting wire is not clamped properly and there is a risk of loosening.

[0046] S103. Obtain the sealing detection signal of the top cover, and determine whether the sealing status of the top cover is qualified based on the preset sealing threshold and the sealing detection signal.

[0047] In this solution, the top cover is used for the protection and sealing of the top of the engineering device. The top cover can be equipped with a locking component. When the top cover is in contact with the sealing gasket, tightening the locking component will apply a downward pressure force to the sealing gasket, causing the flexible sealing gasket to be compressed and deformed, filling the gap between the top cover and the frame, thus achieving waterproof and dustproof sealing of the device.

[0048] In this solution, the sealing detection signal is quantitatively measured through a sealing detection component. The downward displacement of the top cover, the torque or rotation angle after the locking component is locked can directly reflect the compression and sealing effect of the sealing gasket. The sealing detection component detects the relevant physical state of the locking component (such as displacement, angle, etc.). The control module is electrically connected to the sealing detection component. The control module indirectly determines whether the top cover is sealed or not through the sealing detection signal collected by the sealing detection component.

[0049] S104. If the adsorption state, clamping state, and sealing state are all qualified, a power supply closing control command is generated to control the power supply to the engineering device; if at least one of the system state, clamping state, and sealing state is unqualified, a power supply disconnection control command is generated to control the power supply to disconnect.

[0050] In this scheme, the control module stores preset negative pressure threshold, preset clamping threshold and preset sealing threshold. After the control module is powered on, it starts a self-test. If the self-test fails, it directly generates a power disconnect control command, locks the power switch and prohibits power-on operation. If the self-test is qualified, it enters the waiting-to-test state, allowing the collection of three types of status signals and performing subsequent judgments.

[0051] After acquiring the three types of state detection signals, the control module compares them with the corresponding preset thresholds and outputs the detection results of each individual state. The overall state is judged to be qualified only when all three conditions of qualified adsorption state, qualified clamping state, and qualified sealing state are met at the same time; if any state is unqualified, the overall state is judged to be unqualified.

[0052] When the overall status is satisfactory, the control module generates a power-on control command, closing the power switch of the engineering device. After power-on, the device begins performing safety tests on the electrical parameters, insulation performance, and grounding continuity of the electromechanical equipment. When the overall status is unsatisfactory, the control module generates a power-off control command, prohibiting the engineering device from being powered on. After power-on, the control module continuously collects and judges three types of status signals, achieving full-process status monitoring of the engineering device. If any status fails to meet the requirements, a power outage is immediately triggered.

[0053] This embodiment proposes a safety inspection method for electromechanical engineering devices in cigarette factories. This method automatically quantifies and determines the adsorption, clamping, and sealing states. Passing all three states (adsorption, clamping, and sealing) is a prerequisite for powering on the engineering device; powering on is prohibited if any state fails to pass. Furthermore, a failure in any state during the inspection process will immediately trigger a power-off. This avoids problems such as device slippage and overturning due to adsorption failure, poor contact caused by loose clamping, and water ingress and short circuits due to inadequate sealing. It significantly reduces the safety risks of electric shock to on-site inspection personnel and equipment damage, achieving inherent safety control in the inspection process.

[0054] Based on any of the aforementioned solutions, in one possible implementation, determining whether the suction cup's adsorption state is qualified based on a preset negative pressure threshold and an adsorption negative pressure value includes:

[0055] The adsorption negative pressure value is sampled within the sampling period. It is determined whether the adsorption negative pressure value within the sampling period is greater than a preset negative pressure threshold, and whether the cumulative duration of the adsorption negative pressure value being greater than the negative pressure threshold is greater than a preset duration. If the cumulative duration is greater than the preset duration, the adsorption state is determined to be qualified.

[0056] In this scheme, the preset negative pressure threshold is a fixed value pre-configured within the control module. A single sampling is considered successful only when the collected adsorption negative pressure value exceeds this threshold. The sampling period is the range of continuous sampling time for the adsorption negative pressure value by the control module, representing the total time required to complete one adsorption state determination. Within this period, the control module continuously samples at a fixed frequency. The preset duration is the critical value of the cumulative duration after a single instance of adsorption negative pressure value meeting the standard. For the duration verification to be considered successful, the sum of the durations of all single instances meeting the standard within the sampling period must exceed this value.

[0057] In this scheme, the engineering device is placed at a preset position on the testing platform. After the suction cup adheres to the testing platform, the gas in the negative pressure chamber channel is drawn out by the negative pressure generating device to form a negative pressure. After receiving the adsorption start signal, the control module continuously samples the adsorption negative pressure value collected by the negative pressure detection component at a certain sampling frequency within a preset sampling period.

[0058] The control module performs real-time single-sample judgment on the adsorption negative pressure value collected each time within the sampling period. For the adsorption negative pressure value Pi of a single sample, Pi is compared with the preset negative pressure threshold Pth. If Pi > Pth, the sampling is marked as qualified and the duration of the sampling period (equal to the sampling interval) is recorded. If Pi ≤ Pth, the sampling is marked as unqualified and the duration of the sampling period is not included in the cumulative duration.

[0059] In this scheme, the control module performs real-time cumulative calculation of the qualified duration while completing a single judgment. If multiple consecutive samples meet the standard, the duration is continuously accumulated. If the qualified and unqualified periods alternate, only the qualified period duration is accumulated, and the intermittent period is not included.

[0060] Based on any of the aforementioned schemes, in one possible implementation, the method further includes determining whether the adsorption negative pressure value drops during the sampling period, and whether the drop is greater than a preset hysteresis when it drops; if the cumulative duration is greater than the preset duration and the drop is less than the preset hysteresis, then the adsorption state is qualified.

[0061] In this scheme, the decline of adsorption negative pressure value refers to the downward trend of adsorption negative pressure value at a certain moment within the sampling period compared with the adsorption negative pressure value at the previous sampling point; the decline amplitude is the maximum difference in the decline of adsorption negative pressure value within the sampling period (the difference between the maximum adsorption negative pressure value and the minimum adsorption negative pressure value); the preset hysteresis is the critical value of the maximum allowable decline amplitude of adsorption negative pressure value.

[0062] In this scheme, if the adsorption negative pressure value continues to rise or remains stable during the sampling period, the fallback verification is deemed to be up to standard; if the fallback amplitude is less than the preset fallback, the fallback verification is deemed to be up to standard; if the fallback amplitude is greater than or equal to the preset fallback, the adsorption is deemed to be unqualified.

[0063] In this solution, within the sampling period, if the negative pressure values at all sampling points continuously increase (Pi > Pi-1) or remain stable (Pi = Pi-1), it is determined that the fallback verification is qualified and there is no need to calculate the fallback amplitude; if Pi < Pi-1 appears at a certain sampling point, it is determined that the negative pressure has fallen back. At this time, the control module obtains the peak negative pressure Ppeak and the minimum negative pressure value Pmin of the adsorption negative pressure value, calculates the real-time fallback amplitude according to the formula △Pi = Ppeak - Pmin, and compares the real-time fallback amplitude △Pi with the preset dead zone △P: if △Pi < △P, it is determined that the fallback verification is qualified; if △Pi ≥ △P, it is determined that the fallback verification is unqualified.

[0064] In this solution, based on the cumulative duration judgment condition, for the problem of small fluctuations in the adsorption negative pressure caused by vibration, air flow, and small leaks on the table surface at the mechanical and electrical engineering site, the verification of negative pressure fallback is increased to avoid misjudgment of adsorption failure caused by sudden drop of negative pressure.

[0065] On the basis of any of the foregoing solutions, in an implementable manner, a set of clamping plates is configured for one connecting wire. Judging whether the clamping state of the connecting wire is qualified based on the preset clamping threshold and the clamping state signal includes:

[0066] The clamping state signal of each connecting wire is independent. When the clamping state of a connecting wire is determined to be qualified, a connection control instruction allowing the current connecting wire to access the detection circuit is generated.

[0067] In this solution, the engineering device can be configured with several connection holes, each connection hole is configured with one connecting wire, and each connecting wire is configured with a set of clamping plates. A set of clamping plates is configured with a set of clamping state detection components. Each set of clamping state detection components only collects the clamping state signal of the single connecting wire clamped by the corresponding clamping plate and transmits it to the control module separately.

[0068] In this solution, an independent detection circuit branch is configured for each connection hole inside the engineering device. The branches are independent of each other, and the on / off of a single branch does not affect other branches. Each branch is provided with an electric control on / off switch. The control module can be configured to generate a corresponding loop access control signal for a single connecting wire, and the loop access control signal is used to control the electric control on / off switch, so as to allow or prohibit the access of the corresponding detection circuit.

[0069] In this solution, the control module is configured to configure an independent signal acquisition and determination channel for each connecting wire. When a certain clamping plate is locked, the corresponding clamping state detection component starts signal acquisition and transmits the collected clamping state signal to the control module separately. The control module determines the clamping state signals transmitted by each clamping state detection component respectively according to the one-to-one preset clamping threshold, and the determination processes are independent of each other.

[0070] In this scheme, the clamping status signal can represent the clamping force of the clamping plate. If the clamping force of a clamping plate is greater than or equal to the preset clamping threshold Fth, the clamping status of the connecting wire is determined to be qualified; if the clamping force is less than Fth, the clamping status of the connecting wire is determined to be unqualified.

[0071] When the clamping status is acceptable, the control module generates a connection control command allowing the current connecting wire to enter the detection circuit, which is transmitted to the independent electrically controlled on / off switch of the corresponding connecting hole detection circuit. The connecting wire is then successfully connected to the device's main detection circuit and can participate in subsequent tests. If the clamping status of a connecting wire is determined to be unacceptable, the control module does not generate an access command, and the electrically controlled on / off switch of the corresponding detection circuit remains open, prohibiting the connecting wire from entering the detection circuit. If the clamping status of an already connected connecting wire changes from acceptable to unacceptable, the control module immediately generates a disconnect command, cutting off the detection circuit branch corresponding to that connecting wire and prohibiting it from continuing to participate in the test.

[0072] In this solution, for scenarios involving simultaneous testing of multiple connecting lines, a one-to-one clamping structure with one clamp for each connecting line is adopted. Combined with the three independent principles of independent status acquisition, independent threshold determination, and independent access control, this achieves precise control over the clamping status of each connecting line and interlocked access of the detection loop at different hole positions. This ensures the reliability of the connection of a single connecting line and avoids the impact of single-line clamping failure on the overall testing process, significantly improving the flexibility and safety of simultaneous testing at multiple measurement points, and adapting to the actual needs of multi-channel simultaneous testing in electromechanical engineering sites.

[0073] Based on any of the aforementioned solutions, in one possible implementation, the sealing detection signal includes one or more of the following: sealing gasket compression displacement signal, top cover locking torque signal, and top cover locking rotation angle signal; when the sealing gasket compression displacement signal is within a preset target range, or when the top cover locking torque signal and the top cover locking rotation angle signal reach preset values, the sealing condition is determined to be qualified.

[0074] In this design, the top cover can be configured with one or more detection components. For example, it can be configured with a gasket compression displacement detection component, a top cover locking torque detection component, and a top cover locking rotation angle detection component. The gasket compression displacement detection component is installed at the contact point between the gasket and the main body of the engineering device to collect the axial compression displacement of the gasket after it is compressed by the top cover. The top cover locking torque detection component is integrated into the top cover locking component to collect the torque value applied during the locking process. The top cover locking rotation angle detection component is installed at the top cover rotation axis to collect the rotation angle value of the top cover from loosening to locking.

[0075] In this scheme, if the gasket compression displacement signal is selected, the gasket compression displacement D is determined to fall into the preset target range when Dmin≤D≤Dmax; otherwise, the gasket compression displacement D is determined not to fall into the preset target range.

[0076] If the top cover locking torque detection component is selected, the top cover locking torque is determined to have reached the preset value when the collected top cover locking torque T is greater than or equal to the torque threshold Tth; otherwise, the top cover locking torque has not reached the preset value.

[0077] If the top cover locking rotation angle signal is selected, then when the collected top cover locking angle θ ≥ angle threshold θth, it is determined that the top cover locking angle has reached the preset value; otherwise, the top cover locking angle has not reached the preset value.

[0078] When a single signal is selected for determining the sealing condition, the sealing condition is deemed acceptable if the selected signal meets the corresponding judgment rule. If multiple signals are selected for determining the sealing condition, the sealing condition is deemed acceptable only if all selected signals meet the corresponding judgment rule.

[0079] This solution collects one or more of three types of signals: sealing gasket compression displacement, top cover locking torque, and top cover locking rotation angle. Combined with differentiated quantitative judgment rules, it achieves accurate judgment of the top cover sealing status, breaking through the limitations of traditional single-dimensional sealing judgment. It adapts to the detection needs of different sealing structures and different protection levels, avoiding the inability of a single judgment method to adapt to different sealing designs. It can meet the sealing judgment needs of different specification detection devices without changing hardware components, greatly improving the versatility of the solution and equipment compatibility.

[0080] Based on any of the aforementioned solutions, in one possible implementation, the method further includes acquiring monitoring information, determining whether the negative pressure sensor, clamping sensor, and sealing sensor are abnormal based on the monitoring information, and generating a safety degradation mode switching control command when at least one of the negative pressure sensor, clamping sensor, and sealing sensor is abnormal, thereby controlling the engineering device to switch to the safety degradation mode.

[0081] In this solution, the negative pressure sensor is used to collect the adsorption negative pressure value, the clamping sensor is used to collect the clamping status signal, and the sealing sensor is used to collect the sealing detection signal.

[0082] In this solution, the control module is configured to collect monitoring information from three types of sensors continuously and independently at a fixed frequency. The acquisition process is synchronized with the acquisition of sensor detection signals, without interference. The control module independently judges the collected monitoring information from each type of sensor according to preset hardware status anomaly rules or signal characteristic anomaly rules to determine whether the sensor has malfunctioned.

[0083] In this scheme, the hardware status abnormality rules may include: any sensor power supply voltage exceeding the normal range (e.g., normal 5V±0.2V, power supply voltage <4.8V or >5.2V) for a duration of ≥1s; the communication link between the sensor and the control module is disconnected, and there is no communication feedback after 3 consecutive data acquisitions.

[0084] Abnormal signal characteristics of negative pressure sensors may include: the collected adsorption negative pressure value exceeds the sensor's range (e.g., range -100kPa~0kPa, collected value <-100kPa or >0kPa); the negative pressure value has no fluctuation within the sampling period (fluctuation value <0.5kPa), and the duration is ≥2s (non-adsorption stable state); the sensor's zero-point drift exceeds the allowable value (e.g., drift ≥5kPa).

[0085] Abnormal signal characteristics of clamping sensors may include: the collected clamping status signal is always a fixed value; when the locking element is operated, the sensor collects no signal and does not change with the mechanical action; the clamping status signal suddenly jumps, and the jump value exceeds the normal range.

[0086] Abnormal rules for sealing sensor signal characteristics may include: the collected sealing detection signal exceeds the sensor's range; the sensor's collected signal does not change during the locking or unlocking of the top cover and does not respond to mechanical actions.

[0087] The control module performs logical judgment on the abnormal judgment results of the three types of sensors. If the judgment results of the negative pressure, clamping, and sealing sensors are all normal, the control module maintains the normal detection mode mark, and the engineering device continues to operate with full functionality. If the judgment result of at least one of the negative pressure, clamping, and sealing sensors is abnormal, the control module generates a safety degradation mode switching control command to switch the normal detection mode to the safety degradation mode.

[0088] In the safety degradation mode, if the clamping sensor is abnormal, the detection circuit of the connection hole corresponding to the abnormal sensor will be shut down, and only the connection line of the normal clamping sensor will be kept connected; the power supply of the engineering device will be reduced to less than 50% of the normal mode; high-risk operations such as frequent opening and closing of the top cover and plugging and unplugging of connection lines will be prohibited, and only basic detection operations will be retained.

[0089] This solution achieves real-time identification of three types of sensor faults through continuous sensor monitoring, avoiding misjudgments caused by sensor malfunctions that could lead to safety detection failures. When a sensor malfunctions, a safety degradation mode is used to restrict functionality, achieving fault shielding and preventing the fault from spreading and causing safety accidents. Simultaneously, the device's basic detection capabilities are preserved, meeting the needs of on-site engineering testing, avoiding operational interruptions due to system shutdowns, and improving the continuity of on-site testing.

[0090] Based on any of the aforementioned solutions, in one possible implementation, the method further includes acquiring sensor power-on self-test information, determining whether at least one of the negative pressure sensor, clamping sensor, and sealing sensor is abnormal based on the sensor power-on self-test information, and generating a lock power-on control command to prevent the engineering device from being powered on when at least one sensor is abnormal.

[0091] In this solution, after the control module is powered on, the sensors initiate a power-on self-test to perform basic fault checks. The control module assigns a dedicated self-test information acquisition channel to each type of sensor, enabling independent and synchronous acquisition of self-test information from the three types of sensors, thus avoiding information loss or erroneous acquisition caused by channel interference.

[0092] After the negative pressure sensor, clamping sensor, and sealing sensor complete their self-tests, they transmit the power-on self-test information to the control module through a dedicated communication channel (such as 485, CAN, or IO port). The control module performs preliminary analysis and verification of the collected power-on self-test information, eliminating garbled characters and invalid signals, and retaining the identifiable self-test results.

[0093] In this solution, if the sensor outputs a self-test pass signal after the self-test is completed and there are no abnormal fault codes, it is determined that the self-test is normal; if the sensor does not output a self-test signal, outputs an abnormal fault code, or outputs invalid garbled characters, it is determined that the self-test is abnormal.

[0094] In this scheme, if all sensor self-test results are qualified, the control module will not generate a lock-on power-on control command, but will send a power-on unlock command to the main power execution unit, allowing the device to enter the subsequent adsorption, clamping, and sealing status acquisition and judgment process. If at least one sensor self-test is abnormal, the control module will immediately generate a lock-on power-on control command, which will be directly transmitted to the main power switch of the engineering device and the power switch of the detection circuit, forcibly preventing all power closures.

[0095] In this solution, the control module is configured to control the power-on of the engineering device based on the self-test results of the sensors. When an abnormal sensor is detected, a lock power-on control command is generated to prevent the engineering device from being powered on until the fault is cleared and the sensor self-test returns to normal.

[0096] In this solution, the control module has built-in rules for judging the power-on self-test information of the sensors. Based on the power-on self-test information output by the sensors, if at least one of the following conditions is met, the sensor is judged to be abnormal: the sensor does not output any self-test feedback signal; the sensor outputs a clear self-test fault code (such as the manufacturer's preset E01-power supply fault, E02-communication fault, etc.); the self-test signal output by the sensor is a non-standard garbled character that cannot be recognized.

[0097] In this solution, before powering on the engineering device, the sensors' power-on self-test information is used to screen for sensor malfunctions. If an anomaly is found, the power-on of the engineering device is locked, preventing misjudgments of adsorption, clamping, and sealing states caused by sensor malfunctions, thus achieving inherently safe power-on for the congzheng device. The control module is configured to lock power-on when any sensor malfunctions. The control logic is simple and direct, maximizing the safety of the device before power-on and adapting to the complex operating environment of electromechanical engineering sites.

[0098] Based on any of the aforementioned schemes, in one possible implementation, for each type of sensor, the sensor power-on self-test information includes open circuit detection information, short circuit detection information, zero-point drift detection information, and threshold parameter verification information.

[0099] In this solution, open circuit detection information is used to detect the continuity of the sensor's wiring and signal transmission lines, and to check for issues such as disconnections or poor contact. Short circuit detection information is used to detect short circuits in the sensor's power supply and signal circuits. Zero-point drift detection information is used to detect whether the sensor's output signal deviates from the preset zero point when there is no input signal (no-load state). Threshold parameter verification information is used to verify the accuracy of the sensor's built-in preset judgment thresholds (such as negative pressure threshold, clamping force threshold, and sealing displacement threshold) and whether they are consistent with the preset parameters of the control module.

[0100] In this solution, after the control module and sensors are powered on, the control module sends a power-on self-test command to each sensor of each type (negative pressure, clamping, sealing), triggering the start of the built-in self-test program of a single sensor.

[0101] After the sensor self-test program is started, it automatically detects the continuity status of its own terminals and signal transmission lines, and collects the line conduction voltage / current signal (i.e., disconnection detection information). The control module collects this disconnection detection information through a dedicated channel and compares it with the preset disconnection judgment threshold (e.g., conduction voltage ≥ 4.5V is considered continuity, < 0.5V is considered disconnection). If the detection information meets the conduction threshold, the disconnection detection is deemed qualified (no disconnection in the line, good contact). If it does not meet the threshold, the disconnection detection is deemed abnormal (disconnection or poor contact exists).

[0102] The control module synchronously collects the current signal of the sensor power supply circuit (i.e., short circuit detection information) and monitors whether the current in the power supply circuit increases abnormally. The control module compares the collected short circuit detection information with the preset short circuit judgment threshold. If the circuit current is within the normal threshold range (e.g., circuit current > 100mA is a short circuit, < 50mA is normal), the short circuit detection is deemed qualified (no short circuit fault); if the current exceeds the threshold, the short circuit detection is deemed abnormal (a short circuit exists).

[0103] The control module controls the sensor to be in an unloaded state (no detection signal input: no negative pressure from the negative pressure sensor, no clamping action from the clamping sensor, and no locking action from the sealing sensor), and collects the sensor's output signal at this time (i.e., zero-point drift detection information). The control module calculates the difference between this output signal and the preset zero point (e.g., 0V, 0mA), i.e., the drift amount, and compares it with the preset zero-point drift allowable value (e.g., ≤0.1V, ≤0.05mA). If the drift amount is ≤ the allowable value, the zero-point drift detection is deemed qualified (no obvious drift, and the detection accuracy meets the standard); if the drift amount is > the allowable value, the zero-point drift detection is deemed abnormal (the drift is too large, affecting the detection accuracy).

[0104] The sensor self-test reads its own built-in preset judgment threshold (such as the preset negative pressure threshold of a negative pressure sensor, the clamping force threshold of a clamping sensor), and transmits this threshold information as threshold parameter verification information to the control module. The control module compares the sensor's built-in threshold with its own preset standard threshold, calculates the difference, and if the difference is within the allowable range, the threshold parameter verification is deemed qualified (the built-in threshold is accurate and synchronized with the control module). If the difference exceeds the allowable range, the threshold parameter verification is deemed abnormal (the built-in threshold is deviated and needs to be calibrated).

[0105] In this solution, for each type of sensor, if any one of the four types of self-test information is abnormal, the sensor is deemed to have a self-test abnormality; if all four types of self-test information are qualified, the sensor is deemed to have a self-test normality.

[0106] In this solution, the self-test information configured for the sensors includes open circuit, short circuit, zero drift, and threshold parameter verification. This enables comprehensive pre-screening of the sensor's hardware circuitry, avoiding the problem of missed faults caused by self-testing only detecting a single fault (such as only detecting open circuit). Open circuit / short circuit detection can detect poor circuit contact and loop faults in advance, preventing the sensor from failing to transmit signals. Zero drift detection can identify sensor accuracy deviations, avoiding misjudgments in subsequent status determinations. Threshold parameter verification can ensure that the sensor's built-in parameters are synchronized with the control module, ensuring consistent judgment standards and fundamentally preventing various sensor basic faults from flowing into subsequent testing stages.

[0107] Based on any of the aforementioned schemes, in one possible implementation, after obtaining the clamping status signal, the method further includes: sampling and filtering the clamping status signal, de-jittering the state machine, and using the filtered and de-jittered clamping status signal to determine whether the clamping status of the connecting wire is qualified.

[0108] In this solution, when the clamp is tightened or loosened on the connecting cable, the clamping sensor collects the original signal in real time. The control module performs sampling and filtering processing on the original signal and uses a differentiated filtering algorithm according to the signal type to eliminate electromagnetic interference noise.

[0109] The control module continuously samples the original signal at a preset sampling frequency and stores the value of each sample in the sampling buffer in chronological order. The buffer capacity is the filtering window N. When a new sample value is stored, the earliest sample value is automatically removed to achieve first-in-first-out. The real-time updated filtering result is used as the filtering signal and transmitted to the state machine debouncing stage as the input signal for debouncing processing.

[0110] The control module inputs the filtered signal into a dedicated finite state machine and performs debouncing processing according to the logic of state monitoring, timing, threshold determination, and state switching. Specifically, this includes:

[0111] The filtering result of the clamping sensor is set to low level corresponding to state S0 and high level corresponding to state S1. The state machine of all clamping sensors is initially set to state S0, the state timer area is cleared, and there is no valid signal output.

[0112] The state machine monitors the input filtered signal in real time and determines its current state trend. If the filtered signal stably maintains a certain state trend, the state machine continuously times the trend. If the signal trend changes, the current timer is immediately reset and the timer for the new trend is restarted. When the continuous timer duration of a certain state trend reaches the preset state stability duration threshold, the state machine triggers a formal state switch and locks the current state as a valid state. If the timer has not been reached, even if the signal trend changes to another state, the timer is only reset and no state switch is triggered.

[0113] After the state machine completes the state transition, it outputs a stable and valid clamping state signal corresponding to the current valid state and transmits it to the clamping state qualification determination stage; if the state has not been switched, it continues to output the previous valid state signal.

[0114] If the valid signal is in state S1, the clamping state of the corresponding connecting line is deemed qualified, and a connection control command is immediately generated to allow the current connecting line to enter the detection circuit, controlling the corresponding detection circuit's electronic control switch to close; if the valid signal is in state S0, the clamping state of the corresponding connecting line is deemed unqualified, no access command is generated, and the corresponding detection circuit's electronic control switch remains in the open state.

[0115] During the detection operation phase, the state machine continuously performs debouncing processing on the real-time filtered signal. If the valid signal changes from S1 to S0, the clamping state is re-determined as unqualified, a disconnect command is generated to cut off the corresponding detection circuit, and a local alarm is triggered.

[0116] In this solution, a dual signal processing flow of sampling filtering and state machine de-jitter eliminates sensor noise and random spikes caused by electromagnetic interference at the electromagnetic level, making the signal smoother. State machine de-jitter filters transient false signals caused by mechanical contact jitter and table vibration during clamping and loosening. The dual processing eliminates signal distortion caused by various interferences, ensuring that the signal used for judgment is a real and stable clamping state feedback, thus avoiding judgment errors caused by false signals at the source.

[0117] Based on any of the aforementioned solutions, in one possible implementation, the engineering device is configured to include at least three negative pressure sensors, at least three clamping sensors, and at least three sealing sensors. For each type of sensor, the monitoring information includes sensor information for each sensor; if the sensor information of at least two sensors is not abnormal, it is determined that there is no abnormality in that type of sensor.

[0118] In this solution, at least three sensors are configured for each type, forming hardware redundancy. This prevents system paralysis caused by the failure of a single sensor, significantly improving the device's continuous operating capability under harsh conditions. Individual sensors within the same type are allowed to malfunction; as long as at least two are functioning correctly, the type is considered valid, thus preventing single-point failures from causing system-wide malfunctions.

[0119] Figure 2 This is a schematic diagram of the overall structure of the engineering device in the embodiment. Figure 3 This is a schematic diagram of the arrangement of the clamping plate and the clamping status detection component in the embodiment. Figure 4 This is a schematic diagram of the arrangement of the suction cup and negative pressure detection component in the embodiment. Figure 5 This is a schematic diagram of the arrangement of the top cover and the sealing detection component in the embodiment, for reference. Figures 1 to 5 Based on any of the aforementioned schemes, in one possible implementation, the engineering apparatus includes:

[0120] 1. Housing; 2. Detection module; 3. Connection hole; 40-15. Cable clamping module; 21-25. Adsorption fixing module; 32-36. Sealing and protection module; 44. Control module; 45. Power switch; 47. Alarm indicator module; 48. Storage module.

[0121] Each cable clamping module includes a strip plate 10, a first clamping plate 11, a second clamping plate 12, and a locking element 14. The cable clamping module is used to clamp the connecting wire 13. A clamping status detection component 15 is arranged in the locking path or the force path of the clamping plate. The clamping status detection component 15 is used to collect clamping status signals. The clamping status detection component 15 can be a limit switch, a Hall sensor, a strain gauge, or a displacement sensor.

[0122] In this solution, each connection hole 3 is independently configured with a cable clamping module. Each module consists of a strip plate 10, a first clamping plate 11, a second clamping plate 12 and a locking member 14. One cable clamping module is used to achieve one-to-one clamping of a single connection wire 13.

[0123] In this design, the strip plate 10 is fixed to the side of the device connection hole 3 with bolts, ensuring that the strip plate 10 and the connection hole 3 are in corresponding positions, and each connection hole 3 corresponds to an independent strip plate 10. The first clamping plate 11 is fixed to the fixed end of the strip plate 10, and the second clamping plate 12 is movably connected to the sliding end of the strip plate 10, with the clamping surfaces of the first clamping plate 11 and the second clamping plate 12 aligned. The locking member 14 is installed in the locking position of the strip plate 10, ensuring that the locking path of the locking member 14 corresponds to the sliding path of the second clamping plate 12. When the locking member 14 is tightened, the second clamping plate 12 moves toward the first clamping plate 11, clamping the connecting line 13; when the locking member 14 is released, the second clamping plate 12 returns to its original position.

[0124] In this solution, the clamping status detection component 15 is independently configured for each cable clamping module and is arranged in the locking path or the force path of the clamping plate to collect clamping status signals.

[0125] In this scheme, if the clamping state detection component 15 adopts a limit switch, the limit switch is installed at the end of the locking member 14 of the strip plate 10. When the locking member 14 is tightened to the preset locking position (clamping in place), the locking member 14 triggers the limit switch, and the limit switch outputs a high-level signal; when it is not locked in place, the limit switch outputs a low-level signal.

[0126] If the clamping status detection component 15 uses a Hall sensor, the Hall sensor is installed on the movement trajectory of the locking member 14. A magnet is installed on the locking member 14. When the locking member 14 moves to the clamping position, the magnet approaches the Hall sensor, triggering the Hall sensor and outputting a position signal; when it is not in position, there is no signal output.

[0127] If the clamping state detection component 15 uses a strain gauge, the strain gauge is attached to the force-bearing surface of the first clamping plate 11 or the second clamping plate 12. When the clamping plate clamps the connecting wire 13, the clamping plate produces a small deformation. The strain gauge converts the deformation into an electrical signal and outputs an analog signal that is proportional to the clamping force.

[0128] If the clamping state detection component 15 uses a displacement sensor, the displacement sensor is installed on the strip plate 10, and the sensor probe is aligned with the side of the second clamping plate 12. When the locking member 14 drives the second clamping plate 12 to move, the displacement sensor collects the moving distance of the second clamping plate 12 (i.e., clamping displacement) and outputs an analog displacement signal.

[0129] In this scheme, after the control module 44 is powered on, the clamping status detection component 15 participates in the sensor power-on self-test. The control module 44 collects four types of self-test information of the component: open circuit, short circuit, zero drift, and threshold parameter verification, and determines whether each detection component is normal.

[0130] According to the specifications (wire diameter, material) of the connecting wire 13, the operator sets a clamping threshold for each clamping module in the control module 44: if the clamping force is greater than or equal to the force detection threshold F_th; the locking displacement is greater than or equal to the displacement detection threshold D_th; or the Hall sensor outputs a high level for a duration greater than or equal to 200ms, then the clamping is determined to be in place.

[0131] In this scheme, the control module 44 performs debouncing and filtering on the acquired clamping status signals (analog / digital signals). A moving average filtering algorithm is used to average the analog signals (clamping force, displacement) over multiple periods, eliminating spike noise caused by electromagnetic interference and mechanical vibration. Median filtering is used on the digital signals (position detection) to eliminate transient level jumps. A state machine debouncing logic is employed, setting a signal stabilization duration threshold (e.g., 200~500ms). Only when the filtered signal stably maintains a certain state (position / not in position, force / displacement meets / does not meet the threshold) for a duration exceeding the threshold is it considered a valid signal, thus avoiding misjudgments caused by mechanical jitter.

[0132] In this solution, the control module 44 sets a hysteresis parameter for clamping state determination to avoid frequent state switching caused by signal fluctuations. For example, with a clamping force threshold F_th=50N and a hysteresis of 5N, the clamping force is determined to be qualified when it is ≥50N, and unqualified when it is ≤45N. When the clamping force is between 45 and 50N, the original determination state is maintained, further improving the stability of the determination.

[0133] In this solution, the control module 44 assigns an independent detection channel, clamping status determination channel and power supply control channel to each connection hole 3 to ensure that each hole is controlled independently and does not interfere with each other.

[0134] The control module 44 independently compares the detection signal (after de-jittering / filtering) of each clamping module with the preset clamping threshold, and determines whether the clamping status of each hole is qualified. That is, only when the clamping status of the corresponding hole is qualified is the hole allowed to participate in the detection / power-on.

[0135] In this design, the adsorption and fixation module consists of a suction cup 21 and a negative pressure chamber channel 22, used to achieve adsorption and fixation between the device and the component to be tested. The suction cup 21 is fixed to one end of the negative pressure chamber channel 22 through a sealing joint, and the other end of the negative pressure chamber channel 22 is connected to the negative pressure generating unit of the device (such as a vacuum pump).

[0136] A one-way valve 24 is installed in the circuit between the negative pressure chamber channel 22 and the negative pressure generating unit, with its installation direction consistent with the negative pressure flow direction. This ensures that the negative pressure within the negative pressure chamber channel 22 can be maintained stably, preventing rapid leakage of negative pressure even if the negative pressure generating unit stops working. A pressure relief valve 25 is installed on the side of the negative pressure chamber channel 22 and connected to it. The control terminal of the pressure relief valve 25 is electrically connected to the control module 44, which controls its opening and closing to achieve controllable release of negative pressure.

[0137] The negative pressure detection component 23 is connected to the negative pressure chamber channel 22 and is used to collect the negative pressure value in the negative pressure chamber channel 22 in real time. At least three negative pressure sensors are selected as the negative pressure detection component 23, and all negative pressure sensors are connected to the negative pressure chamber channel 22.

[0138] After the control module 44 is powered on, the negative pressure detection component 23 participates in the sensor power-on self-test. The control module 44 collects four types of self-test information for each negative pressure sensor: open circuit, short circuit, zero drift, and threshold parameter verification. It then determines whether each individual sensor is normal. The number of normal negative pressure sensors is counted. If there are ≥2 normal negative pressure sensors, the negative pressure sensors are considered normal overall, and the negative pressure detection process is allowed. If there are <2 normal negative pressure sensors, a power-on lock is triggered, and the device is prohibited from powering on.

[0139] The control module 44 uses a preset negative pressure threshold P_th, a settling time T_stb, and a hysteresis ΔP to accurately determine the adsorption state, thus avoiding misjudgments caused by negative pressure fluctuations.

[0140] After the negative pressure generating unit is started, the negative pressure value in the negative pressure chamber channel 22 gradually decreases. The negative pressure detection component 23 collects the negative pressure value in real time and transmits it to the control module 44. The control module 44 monitors the collected negative pressure value (after filtering and de-jittering) in real time. When the negative pressure value drops to ≤P_th, the control module 44 starts timing. If the negative pressure value can remain stable within the range of ≤P_th and the continuous stable time reaches T_stb, and the number of normal negative pressure sensors is ≥2, the adsorption is deemed qualified.

[0141] After the adsorption is qualified, the control module 44 continuously monitors the negative pressure value collected by the negative pressure detection component 23 and compares the current negative pressure value with P_th+△P in real time; when the negative pressure value rises above P_th+△P, the adsorption is determined to be unsuccessful, and the control module 44 enters the subsequent detection process.

[0142] In this design, the sealing and protection module consists of a frame 33, a sealing gasket 32, and a top cover locking assembly 34. The sealing gasket 32 ​​is embedded in the sealing groove of the frame 33, the top cover is aligned with the frame 33, and the top cover locking assembly 34 corresponds to the positioning holes of the top cover and the frame. When the locking assembly is tightened, the top cover is driven to press against the frame 33.

[0143] The sealing position detection can be achieved using the compression amount detection component 36. This method determines whether the seal is in place by detecting the compression displacement of the sealing gasket 32. At least three displacement sensors are selected as the compression amount detection component 36 and evenly arranged on the edge of the frame 33. The sensor probes are aligned with the corresponding positions on the top cover to ensure that the sensors can accurately collect the compression displacement of the sealing gasket 32 ​​(i.e., the relative displacement between the top cover and the frame) when the top cover is locked. The sensor terminals are connected to the signal acquisition channel of the control module 44.

[0144] After the control module 44 is powered on, the clamping amount detection component 36 participates in the sensor power-on self-test. The control module 44 collects four types of self-test information for each displacement sensor: open circuit, short circuit, zero drift, and threshold parameter verification. It then determines whether each individual sensor is normal. The number of normal displacement sensors is counted. If there are ≥2 normal sensors, the sealing detection sensors are considered normal overall, and the device is allowed to enter the sealing in place detection stage. If there are <2 normal sensors, a power-on lock is triggered, and the device is prohibited from being powered on.

[0145] Alternatively, the sealing position detection can be achieved using a rotational positioning detection component 35. This method determines whether the seal is in place by detecting the locking torque or rotation angle of the top cover locking component 34. At least three torque sensors are selected as the rotational positioning detection component 35 and installed on the locking shaft of the top cover locking component 34 to ensure that the sensors can accurately collect the locking torque when the locking component is tightened. After the device is powered on, the rotational positioning detection component 35 participates in a self-test. The control module 44 determines whether a single sensor is functioning correctly. If the number of correctly functioning sensors is ≥2, the detection process is allowed; otherwise, a power-on lockout is triggered.

[0146] In this scheme, the power switch 45 is connected in series to the power supply circuit of the detection module 2. The control terminal of the power switch 45 is electrically connected to the output terminal of the control module 44. The control module 44 outputs control commands to control the closing and opening of the power switch 45. The alarm indicator 47 is connected to the control module 44 and receives the alarm commands from the control module to realize the visualization and audible prompts of abnormal states.

[0147] The adsorption detection component 23, the sealing detection component 36, and the clamping detection component 15 are all connected to the control module 44 and each type has ≥3 sensors.

[0148] The control module 44 is configured to allow power-on when it is determined that the adsorption, sealing, and clamping are qualified, and at least two corresponding sensors are normal in each state.

[0149] After the control module 44 starts, it first performs power-on self-tests on various types of sensors (adsorption, sealing, and clamping detection components). The control module 44 then determines the number of normal sensors for each type to ensure that each type has ≥2 normal sensors. If the number of normal sensors in any type is <2, it directly triggers power-on lockout and does not proceed to subsequent combination condition determination.

[0150] After passing the self-inspection, the control module 44 independently judges the three states of adsorption, sealing, and clamping, and all must meet the qualification standards, including:

[0151] The negative pressure value collected by the negative pressure detection component 23 meets the requirement of continuously and stably exceeding T_stb and not rising back to P_th+ΔP, and the collected values ​​of at least two normal sensors are all up to standard; the signal collected by the sealing detection component 36 meets the preset target range / set value, and the collected values ​​of at least two normal sensors are all up to standard; for the holes involved in the detection, the signals collected by the clamping detection component 15 are all up to standard, and each type of clamping sensor meets the requirement of ≥2 normal.

[0152] The control module 44 performs a comprehensive verification of the judgment results of the three types of states. Only when the three conditions of adsorption qualification, sealing qualification and clamping qualification are met at the same time, and there is no abnormality in any of the states, is the power-on combination condition deemed to be up to standard; if any condition is not met, the combination condition is deemed to be down to standard.

[0153] When the combined conditions are met, the control module 44 outputs a control command to close the power switch 45, and the detection module 2 is powered on and enters the detection state; if the combined conditions are not met, the control module 44 does not output a closing command, the power switch 45 remains in the open state, and the detection module 2 is prohibited from being powered on; at the same time, the alarm indicator 47 is triggered.

[0154] After the detection module 2 is powered on, the control module 44 continuously monitors the three states of adsorption, sealing, and clamping in real time. Once any state changes from qualified to unqualified, the corresponding disposal action is immediately executed according to the risk level to ensure the safety of equipment and personnel in the failure state.

[0155] The control module 44 collects real-time signals from the three types of state detection components at a preset frequency, filters and de-jitters the collected signals to eliminate false signals caused by interference, and accurately judges the current status of each type of state; at the same time, it continuously monitors the working status of each type of sensor to ensure that the sensor collects signals normally.

[0156] When any state changes from qualified to unqualified, the failure time and failure type are immediately recorded, and a risk level assessment is initiated to distinguish between high-risk and low-risk states. If adsorption or sealing fails, it is judged as high-risk; if a single hole clamping fails, it is judged as low-risk; if multiple hole clamping fails (≥2), it is upgraded to high-risk.

[0157] In a high-risk state, the control module 44 immediately outputs a disconnect command, cuts off the power switch 45, and the detection module 2 is instantly powered off, stopping all detection operations; at the same time, the alarm indicator 47 is triggered.

[0158] In a low-risk state, power is cut off after the fault duration T_fault is determined. Control module 44 starts a timer to continuously monitor the low-risk failure state. If the fault duration is less than T_fault (e.g., 1 second), and the operator rectifys the situation in time, the state is restored to normal, the timer is reset, detection module 2 continues to operate normally, and alarm indicator 47 is not triggered. If the fault duration is greater than or equal to T_fault, control module 44 immediately outputs a disconnect command, turns off the power switch 45, and detection module 2 is powered off; at the same time, alarm indicator 47 is triggered.

[0159] This solution utilizes multi-state sensing—adsorption, clamping, and sealing—to reduce accidental power-on under unsafe conditions, significantly lowering on-site safety risks. The control module only powers on the detection module when all three core states—adsorption, sealing, and clamping—are simultaneously met, and all sensors pass redundant self-tests (≥2 normal for each type), ensuring the safety of both personnel and equipment. During testing, the control module continuously monitors the adsorption, sealing, and clamping states in real-time, employing a tiered failure handling strategy. High-risk states (adsorption and sealing failures) result in instantaneous power cut-off, while low-risk states (single-hole clamping failure) are cut off after determining the duration of the fault. This ensures rapid power disconnection in case of failure, preventing risk escalation and further enhancing the inherent safety performance of the device.

[0160] This solution forms a comprehensive safety defense line, from pre-fault screening of sensor power-on self-test to determination of combined conditions for power-on interlocks, and then to failure monitoring and power-off control during operation. It is progressive and closed-loop managed to adapt to the complex operating environment of electromechanical engineering sites and minimize the probability of various safety accidents.

[0161] This solution adopts an independent clamping and testing design for each hole position. Each connecting hole is equipped with a dedicated clamping module and testing components to achieve interlocking of each hole position. Testing is only allowed when the corresponding hole position is clamped properly, which completely reduces signal jumps and measurement fluctuations caused by loose connecting wires and insecure clamping, and ensures that the test data of each connecting wire is stable and reliable.

[0162] In this solution, the adsorption fixation module adopts a negative pressure judgment strategy based on stabilization time and hysteresis. It requires that the negative pressure value be continuously and stably maintained for more than a preset time before the adsorption is judged to be qualified. At the same time, the negative pressure is kept stable through a one-way valve, which effectively reduces the detection error caused by poor adsorption and slight displacement of the device. This provides a stable equipment foundation for subsequent testing work and improves the overall detection accuracy.

[0163] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for safety inspection of electromechanical engineering equipment in a cigarette factory, characterized in that, include: Obtain the suction negative pressure value of the suction cup, and determine whether the suction state of the suction cup is qualified based on the preset negative pressure threshold and the suction negative pressure value; The clamping status signal of the clamping plate of the connecting wire is obtained, and the clamping status of the connecting wire is judged to be qualified based on the preset clamping threshold and the clamping status signal. Obtain the sealing detection signal of the top cover, and determine whether the sealing status of the top cover is qualified based on the preset sealing threshold and the sealing detection signal; If the adsorption state, clamping state, and sealing state are all qualified, a power supply closing control command is generated to control the power supply to the engineering device; if at least one of the system state, clamping state, and sealing state is unqualified, a power supply disconnection control command is generated to control the power supply to disconnect.

2. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 1, characterized in that, Determining whether the suction state of the suction cup is qualified based on the preset negative pressure threshold and the suction negative pressure value includes: The adsorption negative pressure value is sampled within the sampling period, and it is determined whether the adsorption negative pressure value within the sampling period is greater than the preset negative pressure threshold, and whether the cumulative duration for which the adsorption negative pressure value is greater than the negative pressure threshold is greater than the preset duration. If the cumulative duration is greater than the preset duration, the adsorption state is determined to be qualified.

3. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 2, characterized in that, It also includes determining whether the adsorption negative pressure value drops during the sampling period, and whether the drop is greater than a preset hysteresis when the drop occurs; If the cumulative duration is greater than the preset duration and the drop is less than the preset hysteresis, then the adsorption state is qualified.

4. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 1, characterized in that, Each of the aforementioned connecting cables is configured with a set of the aforementioned clamping plates. Determining whether the clamping state of the connecting cable is qualified based on a preset clamping threshold and the clamping state signal includes: Each of the connecting lines has an independent clamping status signal. When the clamping status of a connecting line is determined to be qualified, a connection control command is generated to allow the current connecting line to enter the detection circuit.

5. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 1, characterized in that, The sealing detection signal includes one or more of the following: sealing gasket compression displacement signal, top cover locking torque signal, and top cover locking rotation angle signal; When the sealing gasket compression displacement signal is within the preset target range, or when the top cover locking torque signal and the top cover locking rotation angle signal reach preset values, the sealing state is determined to be qualified.

6. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 1, characterized in that, It also includes acquiring monitoring information and determining whether the negative pressure sensor, clamping sensor, and sealing sensor are malfunctioning based on the monitoring information; When at least one of the negative pressure sensor, clamping sensor, and sealing sensor malfunctions, a safety degradation mode switching control command is generated to control the engineering device to switch to the safety degradation mode. The negative pressure sensor is used to collect the adsorption negative pressure value, the clamping sensor is used to collect the clamping status signal, and the sealing sensor is used to collect the sealing detection signal.

7. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 6, characterized in that, It also includes acquiring sensor power-on self-test information, and determining whether at least one of the negative pressure sensor, clamping sensor, and sealing sensor is malfunctioning based on the sensor power-on self-test information; When at least one sensor malfunctions, a lock-on power-on control command is generated to prevent the engineering device from being powered on.

8. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 1, characterized in that, After acquiring the clamping status signal, the method further includes: sampling and filtering the clamping status signal, debouncing it using a state machine, and using the filtered and debouncing clamping status signal to determine whether the clamping status of the connecting wire is qualified.

9. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 6, characterized in that, Includes at least three negative pressure sensors, at least three clamping sensors, and at least three sealing sensors; For each type of sensor, the monitoring information includes the sensor information of each sensor. If the sensor information of at least two sensors is not abnormal, it is determined that there is no abnormality in that type of sensor.

10. The safety inspection method for electromechanical engineering equipment in a cigarette factory as described in claim 7, characterized in that, For each type of sensor, the sensor power-on self-test information includes open circuit detection information, short circuit detection information, zero drift detection information, and threshold parameter verification information.

Images