Workshop safety equipment based on face recognition

Abstract

The invention relates to workshop safety equipment based on face recognition, and belongs to the technical field of face recognition, the workshop safety equipment comprises a fence, the fence is provided with a plurality of safety doors, any safety door is provided with a face recognition module, and the face recognition module is used for recognizing face data of an incomer and unlocking the safety door according to the face data; a plurality of plug pin devices are correspondingly arranged at the position, beside any safety door, of the inner wall of the fence, power supply of the mechanical equipment is cut off when any plug pin device is in a cut-off state, a plug pin is detachably arranged in any plug pin device, and when the plug pin is pulled out, the plug pin device is in the cut-off state. When the plug pin is inserted, the plug pin device is in a connection state, and safety and production efficiency are both considered.

Description

Technical Field

[0001] The present invention belongs to the technical field of face recognition, and specifically relates to a workshop safety device based on face recognition. Background Art

[0002] In the working area of production equipment, since there is a probability that the equipment will cause damage to surrounding personnel during operation, it is necessary to use safety fences and safety doors for physical isolation to ensure personnel safety. Traditional safety doors need to be unlocked or locked manually, and the operation is relatively inconvenient. Therefore, it is necessary to set up a face recognition device to control the unlocking of the safety door.

[0003] Generally, the following disadvantages exist in a general face recognition system: operators need to carry a safety lock with them. When the key is lost, it is necessary to forcefully unlock the lock, which is time-consuming and laborious. Since the safety lock is locked on a certain safety door, the operator can only enter and exit through the same safety door. For occasions where the working area of production equipment is relatively large, entering and exiting through the same safety door will bring a lot of inconvenience to the operator and waste working time. Therefore, Chinese Patent CN117197938A discloses a safety protection system and method for an equipment operation area based on face recognition, which includes: a safety fence and a joint control module. The safety fence is arranged outside the target equipment operation area, and several safety doors are arranged on the safety fence. Each safety door is communicatively connected to a first face recognition device, and a second face recognition device is installed on the operation console of the target equipment. The joint control module is communicatively connected to the first face recognition device, the second face recognition device, and the operation console of the target equipment; the first face recognition device is used to identify the identity information of the personnel entering and exiting the safety door. When the identified personnel identity information is authorized information, it controls the opening of the safety door. The present invention realizes the control of opening and closing the safety door through face recognition technology, and does not require the operator to carry a safety lock, avoiding the trouble caused by key loss.

[0004] However, in the above solution, the following problems exist: when multiple operators enter the fence, one operator instructs the mechanical switch to cut off the power through the operation console, and has not yet performed the mechanical switch reset and left. Other operators do not know whether others are inside the fence. For safety reasons, they also leave without performing the mechanical switch reset. At this time, there is no one inside the fence, and the mechanical reset can be normally instructed, but the machine still remains in the stopped state, causing unnecessary downtime and affecting production efficiency. Therefore, a face recognition device that takes into account both safety and efficiency is needed. Summary of the Invention

[0005] To solve the above problems existing in the prior art, the present invention provides a workshop safety device based on face recognition, which has the characteristics of taking into account both safety and efficiency.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] A workshop safety device based on face recognition, including a fence, wherein a plurality of safety doors are arranged on the fence, and a face recognition module is arranged on any one of the safety doors. The face recognition module is used to recognize the face data of the entrant and unlock the safety door according to the face data;

[0008] A plurality of bolt devices are correspondingly arranged on the inner wall of the fence at the position beside any one of the safety doors. When any one of the bolt devices is in the disconnected state, the power supply of the mechanical equipment is disconnected. A bolt is detachably arranged in any one of the bolt devices. When the bolt is pulled out, the bolt device is in the disconnected state, and when the bolt is inserted, the bolt device is in the connected state.

[0009] As a preferred technical solution of the present invention, any one of the bolt devices is provided with a plurality of bolts, and the plurality of bolts are connected in series. When any one of the bolts is pulled out, the bolt device is in the disconnected state.

[0010] As a preferred technical solution of the present invention, any one of the face recognition modules is electrically connected to a dust collector. Any one of the dust collectors is arranged above the bolt device corresponding to the safety door where the face recognition module is located. The dust collector is used to blow and remove dust from the corresponding bolt device.

[0011] As a preferred technical solution of the present invention, the face recognition module is used to count the face recognition frequency and judge whether the difference between the face recognition frequency and the frequency standard value exceeds a threshold. When the judgment result is yes, the blowing power of the corresponding dust collector is increased, and when the judgment result is no, the blowing power is decreased.

[0012] As a preferred technical solution of the present invention, the face recognition module is used to count the face recognition frequency L, and the face recognition module is used to adjust the blowing power of the corresponding dust collector to P, where P=-ax 2 +b, where a and b are constants input in advance, and x = L / L0, and L0 is the standard frequency value input in advance.

[0013] As a preferred technical solution of the present invention, any one of the bolt devices is provided with a lock. The lock is used to apply a force in the direction opposite to the pulling-out direction to the bolt in the bolt device. The lock is electrically connected to the corresponding face recognition module. The face recognition module is used to adjust the damping of the lock. The face recognition module is used to count the face recognition frequency and judge whether the face recognition frequency exceeds a threshold. When the judgment result is yes, the corresponding lock is instructed to reduce the damping, and when the judgment result is no, the lock is instructed to increase the damping.

[0014] As a preferred technical solution of the present invention, the face recognition module is used to count the face recognition frequency L, and the damping of the corresponding lock is adjusted to N, where N = L0 / L×c, and c is a constant input in advance, and L0 is the standard frequency value input in advance.

[0015] As a preferred technical solution of the present invention, it further includes a control panel, and the control panel is used to input the values of L0 and c.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) By arranging a bolt device beside each safety door, different operators can pull out the bolt after entering through any safety door, making the mechanical equipment enter the power-off state, and then insert the bolt before leaving through the same safety door, ensuring that each operator participates in the process of powering off and on the mechanical equipment after entering. Whether the operator knows that there are other people inside the fence or not, they perform the power-off or power-on operation on the mechanical equipment. At the same time, by arranging a number of bolt devices in series, any operator can make the mechanical equipment power off after pulling out the bolt when entering the fence, ensuring safety and efficiency.

[0018] (2) By arranging a dust collector to blow the bolt device, it avoids dust from entering the bolt device inside the fence where the mechanical equipment generates a lot of dust for a long time, affecting the judgment of whether the bolt is inserted in place by the bolt device, and further affecting the control of power-off and power-on of the mechanical equipment by the bolt device.

[0019] (3) By making the face recognition module count the face recognition frequency and judge whether the difference between the face recognition frequency and the frequency standard value exceeds the threshold, and when it exceeds the threshold, increasing the blowing power of the corresponding dust collector, it is completed to reduce the blowing power when the bolt insertion and extraction frequency is low and dust is difficult to enter the bolt device, thereby reducing energy consumption, and increasing the blowing power when the insertion and extraction frequency is high and dust has a probability of entering the bolt device, and increasing the blowing power when the insertion and extraction frequency is extremely low, a large amount of dust accumulates, and there is a probability of a large amount of dust entering the bolt device when re-inserting and extracting.

[0020] (4) By making the face recognition module count the face recognition frequency and judge whether the face recognition frequency exceeds the threshold, when the judgment result is yes, instructing the corresponding locker to reduce the damping, and when the judgment result is no, instructing the locker to increase the damping, so that when the entry and exit frequency is low, representing that the situation is not urgent and it is necessary to give priority to ensuring the stability of the bolt to prevent accidental disconnection of the bolt due to power-off, the damping is increased, thereby ensuring the stability of the bolt. When many people use it in a short period of time, representing that the situation is urgent and it is necessary to reduce the difficulty of bolt insertion and extraction, the damping is reduced. Description of the Drawings

[0021] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a simplified schematic diagram of the overall structure of the workshop fence of the present invention;

[0023] Figure 2 A simplified schematic diagram of the power supply circuit for the mechanical equipment of the present invention;

[0024] Figure 3 A circuit structure diagram inside the switch controlled by the plug device of the present invention;

[0025] Figure 4 A schematic cross-sectional structure diagram of the plug device of the present invention;

[0026] Figure 5 A schematic side cross-sectional structure diagram of the plug device of the present invention;

[0027] Figure 6 A schematic diagram of the structure near one of the safety doors of the fence.

[0028] Description of main component symbols:

[0029] In the figure: 1, safety door; 2, face recognition module; 3, plug device; 31, plug; 32, lock; 4, dust collector. Specific embodiments

[0030] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the accompanying drawings and preferred embodiments to detail the specific embodiments, structures, features and effects according to the present invention as follows.

[0031] Please refer to Figure 1-6 , a workshop safety device based on face recognition, including a fence, the fence is provided with a plurality of safety doors 1, any one of the safety doors 1 is provided with a face recognition module 2, and the face recognition module 2 is used to recognize the face data of the entering person and unlock the safety door 1 according to the face data;

[0032] A plurality of plug 31 devices 3 are correspondingly arranged at the position of the inner wall of the fence beside any one of the safety doors 1. When any one of the plug 31 devices 3 is in the off state, the power supply of the mechanical equipment is disconnected. A plug 31 is detachably arranged in any one of the plug 31 devices 3. When the plug 31 is pulled out, the plug 31 device 3 is in the off state, and when the plug 31 is inserted, the plug 31 device 3 is in the connected state;

[0033] Generally, for the solution of setting the mechanical master switch inside the fence, when multiple operators enter the fence, if one operator instructs the mechanical switch to cut off the power through the operating platform and has not yet reset and left the mechanical switch, other operators do not know whether others are inside the fence. Out of safety considerations, they also leave without resetting the mechanical switch. At this time, there is no one inside the fence, and the mechanical reset can be normally instructed, but the machine still remains in the stopped state, causing unnecessary downtime and affecting production efficiency. In this solution, different operators enter through different safety doors 1 after passing through the face recognition device. After entering, they pull out the bolt 31 beside the safety door 1 just passed through. At this time, the switch controlled by the bolt 31 device 3 is disconnected, and then the circuit supplying power to the mechanical equipment is disconnected, so that the mechanical equipment will not be accidentally started to cause safety hazards. After several operators complete the work inside the fence, they will leave through the safety door 1 they just entered. Before leaving, they insert the bolt 31 into the bolt 31 device 3. When the last operator inside the fence leaves through the entering safety door 1 and inserts the bolt 31, the switch controlled by the bolt 31 device 3 is connected.

[0034] Specifically, for the circuit structure controlled by the bolt 31 device 3, in addition to the conventional circuit breaker switch, the power supply system of the mechanical equipment inside the fence also includes a switch controlled by the bolt 31 device 3. The conventional circuit breaker switch and the switch controlled by the bolt 31 device 3 are connected in series. The switch controlled by the bolt 31 device 3 is of a relay structure. When all the bolts 31 are inserted, the weak-current part of the relay is connected, and the electromagnetic switch connects the strong-current circuit supplying power to the mechanical equipment. The weak-current part of the relay is buried inside the fence in advance.

[0035] By setting the bolt 31 device 3 beside each safety door 1, different operators pull out the bolt 31 after entering through any safety door 1, so that the mechanical equipment enters the power-off state, and then insert the bolt 31 before leaving through the same safety door 1, ensuring that each operator participates in the process of powering off and on the mechanical equipment after entering. Whether the operator knows that there are other people inside the fence or not, they perform the power-off or power-on operation on the mechanical equipment. At the same time, by connecting several bolt 31 devices 3 in series, any operator can cut off the power of the mechanical equipment after entering the fence and pulling out the bolt 31, ensuring safety and efficiency.

[0036] During actual use, for the same safety door 1, it is possible that when the previous operator enters the enclosure through this safety door 1 and has not come out yet, another operator also enters the enclosure through this safety door 1. At this time, there is no bolt 31 in the bolt 31 device 3 when the second and subsequent operators enter. At this time, there is a probability that the first operator leaves the safety door 1 immediately after the second operator enters. The second operator is inside the enclosure where the bolt 31 has been inserted, the mechanical equipment is powered on and may start at any time, and the bolt 31 device 3 cannot play its own safety role. To avoid such situations, each bolt 31 device 3 is provided with a number of bolts 31, and the several bolts 31 are connected in series. When any bolt 31 is pulled out, the bolt 31 device 3 is in a disconnected state. At this time, when the second operator follows the first operator into the enclosure and also pulls out the bolt 31 from the bolt 31 device 3, even if the first operator inserts the bolt 31 and leaves the enclosure, since the second operator pulls out the bolt 31, the switch controlled by the bolt 31 device 3 remains in a power-off state, and the mechanical equipment is powered off, ensuring that the bolt 31 device 3 can normally play its own safety role.

[0037] The mechanical equipment inside the enclosure can be any type of mechanical equipment. Some mechanical equipment generates more dust during operation. After the dust drifts into the bolt 31 device 3, it will affect the judgment of whether the bolt 31 is inserted by the bolt 31 device 3. There is a probability that the bolt 31 is inserted but the bolt 31 device 3 cannot enter the connected state, or when the bolt 31 is not pulled out, it is judged as the state where the bolt 31 is not pulled out. For this reason, each face recognition module 2 is electrically connected to a dust collector 4. Each dust collector 4, bolt 31 device 3, face recognition module 2 and safety door 1 are regarded as a set of access control systems. In the same access control system, the face recognition module 2 is arranged beside the safety door 1 of the same system, the bolt 31 device 3 is arranged inside the enclosure and beside the safety door 1 of the same system, and the dust collector 4 is arranged above the bolt 31 device 3 of the same system for blowing and dust removal of the bolt 31 device 3 below;

[0038] By setting the dust collector 4 to blow and sweep the bolt 31 device 3, it is avoided that in the case of more dust generated by the mechanical equipment, dust enters the bolt 31 device 3 that has been in the enclosure with the mechanical equipment for a long time, affecting the judgment of whether the bolt 31 is inserted in place by the bolt 31 device 3, and further affecting the control of power-off and power-on of the mechanical equipment by the bolt 31 device 3.

[0039] The usage frequency of the bolt 31 device 3 varies with demand. When the mechanical equipment is running smoothly, there is no need for operators to frequently pass through the safety door 1 to enter and exit the fence. At this time, the usage frequency of the bolt 31 device 3 is relatively low. When operators need to frequently enter and exit the fence, the plugging and unplugging frequency is relatively high. When the plugging and unplugging frequency of the bolt 31 is relatively low and it is difficult for dust to enter the bolt 31 device 3, the purging power is reduced, and there is no need for a relatively high purging power. When the plugging and unplugging frequency is relatively high and there is a probability that dust will enter the bolt 31 device 3, the purging power is increased. Therefore, the face recognition module 2 is used to count the face recognition frequency and determine whether the difference between the face recognition frequency and the frequency standard value exceeds a threshold. When the judgment result is yes, the purging power of the corresponding dust collector 4 is increased. When the judgment result is no, the purging power is reduced.

[0040] The face recognition module 2 is used to count the face recognition frequency L, and the face recognition module 2 is used to adjust the purging power of the corresponding dust collector 4 to P, where P = -ax 2 +b, where a and b are constants input in advance, x = L / L0, and L0 is the standard frequency value input in advance;

[0041] The values of a and b are set to ensure that the quadratic function P = -ax 2 +b when L = the standard value L0, that is, x = 1, P is at the minimum value and P > 0, completing the reduction of the purging power when the plugging and unplugging frequency is relatively low, and the greater the difference between the plugging and unplugging frequency and the standard value, the greater the value of P, completing the increase of the dust removal power when the plugging and unplugging frequency is relatively high or extremely low;

[0042] By enabling the face recognition module 2 to count the face recognition frequency and determine whether the difference between the face recognition frequency and the frequency standard value exceeds a threshold, and when it exceeds the threshold, increasing the purging power of the corresponding dust collector 4, completing the reduction of the purging power when the plugging and unplugging frequency of the bolt 31 is relatively low and it is difficult for dust to enter the bolt 31 device 3, thereby reducing energy consumption, increasing the purging power when the plugging and unplugging frequency is relatively high and there is a probability that dust will enter the bolt 31 device 3, and increasing the purging power when the plugging and unplugging frequency is extremely low and a large amount of dust accumulates and there is a probability that a large amount of dust will enter the bolt 31 device 3 when plugging and unplugging again;

[0043] The usage frequency of the plug 31 of the device 3 will also affect other aspects. For example, if the plug 31 of the device 3 is not used for a long time, it means the situation is not urgent and there is no need for frequent plugging and unplugging. At this time, it is necessary to prioritize ensuring the stability of the plug 31 to prevent the plug 31 from accidentally falling off and powering off. When multiple people use it in a short period, it means the situation is urgent and it is necessary to reduce the difficulty of plugging and unplugging the plug 31. For this reason, each plug 31 device 3 is provided with a lock 32, and the lock 32 is used to apply a force in the direction opposite to the pulling direction to the plug 31 in the plug 31 device 3. The lock 32 is electrically connected to the corresponding face recognition module 2. The face recognition module 2 is used to adjust the damping of the lock 32, and the face recognition module 2 is used to count the face recognition frequency and determine whether the face recognition frequency exceeds a threshold. When the judgment result is yes, it instructs the corresponding lock 32 to reduce the damping. When the judgment result is no, it instructs the lock 32 to increase the damping;

[0044] Specifically, for each plug 31 of any plug 31 structure, a receiving cavity is provided. The plug 31 is a cylindrical structure, and the receiving cavity is a cylindrical cavity. The inner diameter of the receiving cavity is equal to the outer diameter of the plug 31. The receiving cavity is arranged upward so that the plug 31 can be inserted into the receiving cavity and maintained in the inserted state by gravity. A lock 32 is provided in each receiving cavity. The lock 32 is a device that applies a radial force to the plug 31 in the receiving cavity, so that the plug 31 increases the friction with the receiving cavity and increases the stability. When the damping is large, the radial force applied by the lock 32 to the plug 31 in the receiving cavity is greater. When the damping is small, the radial force applied by the lock 32 to the plug 31 in the receiving cavity is smaller;

[0045] The face recognition module 2 is used to count the face recognition frequency L and adjust the damping of the corresponding lock 32 to N, where N = L0 / L × c, and c is a constant input in advance, and L0 is a standard frequency value input in advance;

[0046] When L is small, it means the frequency is low and it is necessary to increase the damping to ensure stability. At this time, the value of N = L0 / L × c is large. When the control module adjusts the damping to N, it completes the operation of increasing the damping of the corresponding lock 32 when it is judged that the face recognition frequency exceeds the threshold;

[0047] Similarly, when L is large, it means the frequency is high and it is necessary to reduce the damping to ensure the plugging and unplugging efficiency. At this time, the value of N = L0 / L × c is small. When the control module adjusts the damping to N, it completes the operation of reducing the damping of the corresponding lock 32 when it is judged that the face recognition frequency is lower than the threshold;

[0048] By enabling the face recognition module 2 to count the face recognition frequency and determine whether the face recognition frequency exceeds a threshold, when the determination result is yes, the corresponding locker 32 is instructed to reduce the damping, and when the determination result is no, the locker 32 is instructed to increase the damping, so that when the entry and exit frequency is low, indicating that the situation is not urgent, it is necessary to give priority to ensuring the stability of the bolt 31, and the damping is increased to prevent the bolt 31 from accidentally falling off and powering off, thereby ensuring the stability of the bolt 31. When multiple people use it in a short period of time, indicating that the situation is urgent and it is necessary to reduce the difficulty of inserting and removing the bolt 31, the damping is reduced.

[0049] It further includes a control panel for inputting the values of L0 and c.

[0050] The working principle and usage process of the present invention:

[0051] During use, different operators enter through the face recognition device from different safety doors 1. After entering, they pull out the bolt 31 beside the safety door 1 just passed through. At this time, the switch controlled by the bolt 31 device 3 is disconnected, and then the circuit for supplying power to the mechanical equipment is disconnected, so that the mechanical equipment will not be accidentally started to cause safety hazards. After several operators complete the work inside the fence, they will leave from the safety door 1 they just entered. Before leaving, they insert the bolt 31 into the bolt 31 device 3. When the last operator inside the fence leaves from the entered safety door 1 and inserts the bolt 31, the switch controlled by the bolt 31 device 3 is connected.

[0052] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form an equivalent embodiment with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A workshop safety device based on face recognition, characterized in that: It includes a fence, and a number of safety doors are provided on the fence. A face recognition module is provided on any one of the safety doors. The face recognition module is used to recognize the face data of the entrant and unlock the safety door according to the face data. A number of latch devices are correspondingly provided at positions on the inner wall of the fence beside any one of the safety doors. When any one of the latch devices is in a disconnected state, the power supply of the mechanical equipment is disconnected. A latch is detachably provided in any one of the latch devices. When the latch is pulled out, the latch device is in a disconnected state, and when the latch is inserted, the latch device is in a connected state.

2. The workshop safety device based on face recognition according to claim 1, characterized in that: Any one of the latch devices is provided with a number of latches, and the aforenamed latches are connected in series. When any one of the latches is pulled out, the latch device is in a disconnected state.

3. The workshop safety device based on face recognition according to claim 2, characterized in that: Any one of the face recognition modules is electrically connected to a dust collector. Any one of the dust collectors is arranged above the latch device corresponding to the safety door where the face recognition module is located. The dust collector is used to blow and remove dust from the corresponding latch device.

4. The workshop safety device based on face recognition according to claim 3, characterized in that: The face recognition module is used to count the face recognition frequency and judge whether the difference between the face recognition frequency and the frequency standard value exceeds a threshold. When the judgment result is yes, the blowing power of the corresponding dust collector is increased, and when the judgment result is no, the blowing power is decreased.

5. The workshop safety device based on face recognition according to claim 4, characterized in that: The face recognition module is used to count the face recognition frequency L, and the face recognition module is used to adjust the purging power of the corresponding dust collector to P, where P = -ax 2 +b, where a and b are constants input in advance, x = L / L0, and L0 is the standard frequency value input in advance.

6. The workshop safety device based on face recognition according to claim 2, characterized in that: Any one of the latch devices is provided with a lock. The lock is used to apply a force on the latch in the direction opposite to the pulling-out direction in the latch device. The lock is electrically connected to the corresponding face recognition module. The face recognition module is used to adjust the damping of the lock. The face recognition module is used to count the face recognition frequency and judge whether the face recognition frequency exceeds a threshold. When the judgment result is yes, it instructs the corresponding lock to reduce the damping, and when the judgment result is no, it instructs the lock to increase the damping.

7. The workshop safety device based on face recognition according to claim 6, characterized in that: The face recognition module is used to count the face recognition frequency L and adjust the damping of the corresponding lock to N, where N = L0 / L×c, c is a constant input in advance, and L0 is a standard frequency value input in advance.

8. The workshop safety device based on face recognition according to claim 1, wherein: It further includes a control panel, and the control panel is used to input the values of L0 and c.

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