A workshop safety device based on face recognition

Abstract

The application relates to a workshop safety device based on face recognition, belonging to the technical field of face recognition, which comprises a fence, the fence is provided with a plurality of safety doors, any safety door is provided with a face recognition module, the face recognition module is used for recognizing face data of an entrant and unlocking the safety door according to the face data; a plurality of bolt devices are correspondingly arranged at positions where the inner wall of the fence is located beside any safety door, any bolt device is used for disconnecting power supply of mechanical equipment when the bolt device is in a disconnected state, a bolt is detachably arranged in any bolt device, the bolt device is in the disconnected state when the bolt is pulled out, and the bolt device is in a connected state when the bolt is inserted, so that safety and production efficiency are considered.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of face recognition, and particularly relates to a workshop safety device based on face recognition. BACKGROUND

[0002] In the working area of production equipment, since the equipment has a probability of causing damage to the surrounding personnel when running, a safety fence and a safety door are needed to be physically isolated to protect the safety of personnel, and the traditional safety door needs to be manually unlocked or locked, which is relatively inconvenient to operate, so a face recognition device is needed to control the unlocking of the safety door.

[0003] The general face recognition system has the following shortcomings: the operator needs to carry a safety lock, and needs to forcibly take the lock when the key is lost, which is time-consuming and labor-consuming. Since the safety lock is locked on a certain safety door, the operator can only enter and exit from the same safety door, which brings a lot of inconvenience to the operator and wastes working time for the occasion that the production equipment working area is relatively large. Therefore, Chinese patent CN117197938A discloses a device operation area safety protection system and method based on face recognition, which comprises a safety fence and a joint control module. The safety fence is arranged outside the target device operation area, and a plurality of safety doors are arranged on the safety fence. Each safety door is communicatively connected to a first face recognition device. The operator station of the target device is installed with a second face recognition device. The joint control module is communicatively connected with the first face recognition device, the second face recognition device and the operator station of the target device. The first face recognition device is used to identify the personnel identity information entering and exiting the safety door. When the identified personnel identity information is authorized information, the opening of the safety door is controlled. The present application realizes the control of opening and closing the safety door through face recognition technology, and the operator does not need to carry a safety lock, avoiding the trouble caused by the loss of the key.

[0004] However, in the above-mentioned scheme, there are the following problems: multiple operators enter the fence, one of the operators turns off the mechanical switch through the operation table instruction, and has not executed the mechanical switch reset and left. Other operators do not know whether the other person is in the fence, and also do not execute the mechanical switch reset for safety consideration and leave. At this time, there is no one in the fence, the mechanical reset can be normally instructed, but the mechanical still maintains in the stop state, causing unnecessary downtime and affecting production efficiency. Therefore, a face recognition device that takes into account safety and efficiency is needed. SUMMARY

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

[0006] The purpose of the application can be achieved by the following technical solutions:

[0007] A workshop safety device based on face recognition, comprising a fence, the fence is provided with a plurality of safety doors, any of the safety doors is provided with a face recognition module, the face recognition module is used for identifying the face data of an entrant and unlocking the safety door according to the face data;

[0008] The fence inner wall is correspondingly provided with a plurality of latch devices at the position beside any of the safety doors, any of the latch devices is disconnected to disconnect the power supply of the mechanical equipment, any of the latch devices is detachably provided with a latch, the latch is pulled out to make the latch device in the disconnected state, and the latch is inserted to make the latch device in the connected state.

[0009] As a preferred technical solution of the present application, any of the latch devices is provided with a plurality of latches, the plurality of latches are connected in series, and any of the latches is pulled out to make the latch device in the disconnected state.

[0010] As a preferred technical solution of the present application, any of the face recognition modules is electrically connected with a dust remover, any of the dust removers is arranged above the latch device of the safety door corresponding to the face recognition module, and the dust remover is used for blowing and dusting the corresponding latch device.

[0011] As a preferred technical solution of the present application, the face recognition module is used for counting the face recognition frequency and judging whether the difference between the face recognition frequency and the frequency standard value exceeds a threshold value, the blowing power of the corresponding dust remover is increased when the judgment result is yes, and the blowing power is reduced when the judgment result is no.

[0012] As a preferred technical solution of the present application, the face recognition module is used for counting the face recognition frequency L, and the blowing power of the corresponding dust remover is adjusted to P, wherein P=-ax 2 +b, a and b are pre-input constants, x=L / L0, and L0 is a pre-input standard frequency value.

[0013] As a preferred technical solution of the present application, any of the latch devices is provided with a locker, the locker is used for applying a force in the opposite direction of the pulling-out direction to the latch in the latch device, the locker is electrically connected with the corresponding face recognition module, the face recognition module is used for adjusting the damping of the locker, the face recognition module is used for counting the face recognition frequency and judging whether the face recognition frequency exceeds a threshold value, the corresponding locker is instructed to reduce the damping when the judgment result is yes, and the locker is instructed to increase the damping when the judgment result is no.

[0014] As a preferred technical solution of the present application, the face recognition module is used for counting the face recognition frequency L and adjusting the damping of the corresponding locker to N, wherein N=L0 / L×c, c is a pre-input constant, and L0 is a pre-input standard frequency value.

[0015] As a preferred technical solution of the present application, a control panel is further included for inputting the values of L0 and c.

[0016] The present application has the following advantages:

[0017] (1) By setting a latch device beside each safety door, different operators can enter from any safety door, pull out the latch, and make the mechanical equipment enter the power-off state, then insert the latch before leaving from the same safety door, ensuring that each operator participates in the process of powering off and powering on the mechanical equipment after entering, and the operator performs the power-off or power-on action regardless of whether he knows that there are other people inside the fence, and by connecting a plurality of latch devices in series, any operator who enters the fence and pulls out the latch can make the mechanical equipment power off, ensuring safety and efficiency.

[0018] (2) By setting a dust collector to blow the latch device, it avoids the situation where the latch device inside the fence for a long time is affected by dust, which affects the judgment of the latch device on whether the latch is inserted in place, and further affects the control of the latch device on the power-off and power-on of the mechanical equipment.

[0019] (3) By making the face recognition module count the face recognition frequency and determine whether the difference between the face recognition frequency and the frequency standard value exceeds the threshold value, and when the threshold value is exceeded, increasing the blowing power of the corresponding dust collector, it reduces the blowing power when the latch insertion and removal frequency is low and dust is difficult to enter the latch device, thereby reducing energy consumption, and increases the blowing power when the insertion and removal frequency is high and dust has a probability of entering the latch device, and increases the blowing power when the insertion and removal frequency is extremely low and dust accumulates in large quantities and has a probability of entering the latch device in large quantities when reinserted.

[0020] (4) By making the face recognition module count the face recognition frequency and determine whether the face recognition frequency exceeds the threshold value, and when the result is yes, instructing the corresponding lock to reduce the damping, and when the result is no, instructing the lock to increase the damping, so that when the frequency of entering and leaving is low, it represents that the situation is not urgent and the stability of the latch needs to be prioritized to prevent the latch from accidentally falling off and powering off, and the damping is increased, thereby ensuring the stability of the latch, and when multiple people use it in a short period of time, it represents that the situation is urgent and the difficulty of inserting and removing the latch needs to be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to facilitate the understanding of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

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

[0023] Figure 2 Simplified schematic diagram of the power supply circuit of the mechanical equipment of the present application;

[0024] Figure 3 Circuit structure diagram inside the switch controlled by the latch device of the present application;

[0025] Figure 4 Sectional structure schematic diagram of the latch device of the present application;

[0026] Figure 5 Sectional structure schematic diagram of the latch device of the present application;

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

[0028] Explanation of main component symbols:

[0029] In the figure: 1, safety door; 2, face recognition module; 3, latch device; 31, latch; 32, lock; 4, dust remover. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined object of the application, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the drawings and preferred embodiments.

[0031] Please refer to Figures 1-6 A workshop safety device based on face recognition, comprising a fence, the fence being provided with a plurality of safety doors 1, any safety door 1 being provided with a face recognition module 2, the face recognition module 2 being used to identify the face data of an entrant and to unlock the safety door 1 according to the face data;

[0032] The fence inner wall is correspondingly provided with a plurality of latch 31 devices 3 at a position beside any safety door 1, any latch 31 device 3 being in a disconnected state to disconnect the power supply of the mechanical equipment, any latch 31 device 3 being detachably provided with a latch 31, the latch 31 being pulled out to make the latch 31 device 3 in the disconnected state, the latch 31 being inserted to make the latch 31 device 3 in the connected state;

[0033] Due to the general scheme of setting the mechanical master switch in the fence, when multiple workers enter the fence, one worker turns off the mechanical switch through the workbench command, and the other worker does not know whether the other person is in the fence, and also does not perform the mechanical switch reset for safety reasons. When no one is in the fence, the mechanical reset can be normally commanded, but the mechanical still maintains a stop state, causing unnecessary downtime and affecting production efficiency. In the present scheme, different workers enter through the face recognition device from different safety doors 1, pull out the bolt 31 beside the safety door 1 just passed, and the switch controlled by the bolt 31 device 3 is turned off, thereby disconnecting the power supply circuit of the mechanical equipment, which will not start unexpectedly and cause safety hazards. If several workers complete the work in the fence, they will leave from the safety door 1 just entered, and before leaving, they will insert the bolt 31 into the bolt 31 device 3. When the last worker in the fence leaves from the 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, the power supply system of the mechanical equipment in the fence includes a switch controlled by the bolt 31 device 3 in addition to the conventional electric gate switch. The conventional electric gate 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 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 that supplies power to the mechanical equipment. The weak current part of the relay is buried in the fence in advance.

[0035] By setting the bolt 31 device 3 beside each safety door 1, different workers can pull out the bolt 31 after entering from any safety door 1, making the mechanical equipment enter a power-off state, and then insert the bolt 31 before leaving from the same safety door 1, ensuring that each worker participates in the process of powering off or powering on the mechanical equipment after entering. Whether the worker knows that there are other people in the fence or not, the worker will perform the power-off or power-on action on the mechanical equipment. At the same time, by connecting several bolt 31 devices 3 in series, any worker who enters the fence and pulls out the bolt 31 can make the mechanical equipment power off, ensuring safety and efficiency.

[0036] In actual use, for the same safety door 1, when the previous worker has not yet exited the fence from the safety door 1, another worker also enters the fence from the safety door 1, at this time, the second and subsequent workers enter the fence without the bolt 31 in the bolt 31 device 3, at this time, there is a probability that the first worker will immediately exit the safety door 1 after the second worker enters, the second worker is located in the fence with the bolt 31 already inserted, the mechanical equipment is powered on and can start at any time, and the bolt 31 device 3 cannot play its own safety role. In order to avoid such a situation, any bolt 31 device 3 is provided with a plurality of bolts 31, the plurality of bolts 31 are connected in series, and any bolt 31 is pulled out to make the bolt 31 device 3 in a disconnected state. At this time, when the second worker enters the fence after the first worker, the bolt 31 is also pulled out from the bolt 31 device 3. Even if the first worker inserts the bolt 31 to exit the fence, since the second worker pulls out the bolt 31, the switch controlled by the bolt 31 device 3 is still in a power-off state, the mechanical equipment is powered off, and the bolt 31 device 3 can normally play its own safety role.

[0037] The mechanical equipment in the fence can be any kind of mechanical equipment. Some mechanical equipment generates a lot of dust when working. The dust floating into the bolt 31 device 3 will affect the judgment of the bolt 31 device 3 on whether the bolt 31 is inserted, and there is a probability that the bolt 31 will be inserted but the bolt 31 device 3 cannot enter the connected state, or the bolt 31 is not pulled out, and the bolt 31 device 3 judges that the bolt 31 is not pulled out. Therefore, any face recognition module 2 is electrically connected with a dust remover 4. Each dust remover 4, bolt 31 device 3, face recognition module 2, and safety door 1 is considered as a set of access control system. For the same access control system, the face recognition module 2 is arranged beside the same system safety door 1, the bolt 31 device 3 is arranged in the fence and beside the same system safety door 1, and the dust remover 4 is arranged above the same system bolt 31 device 3 to blow air to the bolt 31 device 3 below for dust removal.

[0038] By setting the dust remover 4 to blow the bolt 31 device 3, it is avoided that the bolt 31 device 3 in the fence for a long time with the mechanical equipment generates a lot of dust, which affects the judgment of the bolt 31 device 3 on whether the bolt 31 is inserted in place, and further affects the control of the bolt 31 device 3 on the power-off and power-on of the mechanical equipment.

[0039] The use frequency of the bolt 31 device 3 changes with the demand. When the mechanical equipment runs smoothly, the workers do not need to pass through the safety door 1 frequently to enter and exit the fence, at this time, the use frequency of the bolt 31 device 3 is low. When the workers need to frequently enter and exit the fence, the plug-in and plug-out frequency is high. When the plug-in and plug-out frequency of the bolt 31 is low, it is difficult for dust to enter the bolt 31 device 3, so the blowing power is reduced, and a higher blowing power is not needed. When the plug-in and plug-out frequency is high, and dust has a probability of entering the bolt 31 device 3, the blowing power is increased. For this purpose, 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 the threshold value. When the determination result is yes, the blowing power of the corresponding dust remover 4 is increased. When the determination result is no, the blowing power is reduced.

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

[0041] The values of a and b are set to ensure that the quadratic function P = -ax 2 +b is at a minimum value when L = the standard value L0, that is, x = 1, and P > 0. When the plug-in and plug-out frequency is low, the blowing power is reduced. The greater the difference between the plug-in and plug-out frequency and the standard value, the greater the value of P, so that when the plug-in and plug-out frequency is high or very low, the dust removal power is increased.

[0042] By having the face recognition module 2 count the face recognition frequency and determine whether the difference between the face recognition frequency and the frequency standard value exceeds the threshold value, and when the threshold value is exceeded, the blowing power of the corresponding dust remover 4 is increased, so that when the plug-in and plug-out frequency of the bolt 31 is low, and dust is difficult to enter the bolt 31 device 3, the blowing power is reduced, thereby reducing energy consumption. When the plug-in and plug-out frequency is high, and dust has a probability of entering the bolt 31 device 3, the blowing power is increased. When the plug-in and plug-out frequency is very low, and dust accumulates in large quantities, and when it is re-plugged, a large amount of dust has a probability of entering the bolt 31 device 3, the blowing power is increased.

[0043] The use frequency of the latch 31 device 3 also affects other aspects, for example, long-term non-use of the latch 31 device 3 represents that the situation is not urgent and there is no need to frequently plug and unplug, at this time, the stability of the latch 31 needs to be ensured in priority, and the latch 31 is prevented from being accidentally pulled out and powered off, and in the short term, multiple people use it, which represents that the situation is urgent, and the difficulty of plugging and unplugging the latch 31 needs to be reduced. For this purpose, any latch 31 device 3 is provided with a locker 32, the locker 32 is used to apply a force in the opposite direction to the pulling-out direction to the latch 31 in the latch 31 device 3, the locker 32 is electrically connected with the corresponding face recognition module 2, the face recognition module 2 is used to adjust the damping of the locker 32, the face recognition module 2 is used to count the face recognition frequency and judge whether the face recognition frequency exceeds a threshold value, when the judgment result is yes, the corresponding locker 32 is instructed to reduce the damping, and when the judgment result is no, the locker 32 is instructed to increase the damping;

[0044] Specifically, any latch 31 structure is provided with a containing cavity for each latch 31, the latch 31 is a cylindrical structure, the containing cavity is a cylindrical cavity, the inner diameter of the containing cavity is equal to the outer diameter of the latch 31, the containing cavity is upwardly arranged, so that the latch 31 can be inserted into the containing cavity and maintained in the state of being inserted into the containing cavity by gravity, and the locker 32 is arranged in each containing cavity, the locker 32 is a device for applying a radial force to the latch 31 in the containing cavity, so that the friction between the latch 31 and the containing cavity is increased and the stability is increased, when the damping is larger, the locker 32 applies a larger radial force to the latch 31 in the containing cavity, and when the damping is smaller, the locker 32 applies a smaller radial force to the latch 31 in the containing cavity;

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

[0046] When L is small, which represents a lower frequency, the damping needs to be increased to ensure stability, at this time, the value of N=L0 / L×c is larger, and when the control module adjusts the damping to N, the increasing of the damping of the corresponding locker 32 when the face recognition frequency exceeds the threshold value is completed;

[0047] Similarly, when L is large, which represents a higher frequency, the damping needs to be reduced to ensure the plugging and unplugging efficiency, at this time, the value of N=L0 / L×c is smaller, and when the control module adjusts the damping to N, the reducing of the damping of the corresponding locker 32 when the face recognition frequency is lower than the threshold value is completed;

[0048] By making the face recognition module 2 statistics face recognition frequency and determine whether the face recognition frequency exceeds the threshold, in the judgment result is yes when the instruction corresponding to the damper 32 is reduced, when the judgment result is no, the instruction damper 32 is improved, so that in the frequency of entry and exit is low, represents the situation is not urgent, need to ensure the stability of the bolt 31, prevent the bolt 31 from falling off accidentally, when the power is improved, and then ensure the stability of the bolt 31, when many people use in a short period of time, the situation is urgent, need to reduce the difficulty of inserting and pulling the bolt 31, reduce the damping.

[0049] Also includes a control panel, control panel for input L0, c value.

[0050] The working principle and use process of the application:

[0051] When using, different operating personnel pass through the face recognition device from different safety doors 1, pull out the bolt 31 beside the safety door 1 just passed after entering, 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, the mechanical equipment will not start accidentally, causing safety hazards, after a number of operating personnel complete the work in the fence, they will leave from the safety door 1 just entered, and insert the bolt 31 into the bolt 31 device 3 before leaving, when the last operating personnel in the fence leaves from the 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 application, not any form of limitation on the application, although the application has been disclosed as above, however, it is not intended to limit the application, any person skilled in the art, without departing from the scope of the technical scheme of the application, can make some changes or modifications of the above disclosed technical content as equivalent embodiments, but as long as it does not deviate from the technical scheme of the application, according to the technical essence of the application, any modification, equivalent change and modification of the above embodiments, all still belong to the scope of the technical scheme of the application.

Claims

1. A face recognition based plant safety device, characterized in that: The fence is provided with a plurality of safety doors, any of which is provided with a face recognition module for recognizing the face data of an entrant and unlocking the safety door according to the face data; The fence is provided with a plurality of safety doors, any of which is provided with a face recognition module for recognizing the face data of an entrant and unlocking the safety door according to the face data; The fence is provided with a plurality of safety doors, any of which is provided with a face recognition module for recognizing the face data of an entrant and unlocking the safety door according to the face data; Any of the face recognition modules is electrically connected to a dust remover, which is arranged above the pin device of the safety door corresponding to the face recognition module and is used for blowing and removing dust from the corresponding pin device; Any of the face recognition modules is electrically connected to a dust remover, which is arranged above the pin device of the safety door corresponding to the face recognition module and is used for blowing and removing dust from the corresponding pin device; The face recognition module is used to count the face recognition frequency and determine whether the face recognition frequency exceeds a threshold value, and when the determination result is yes, the corresponding lock is instructed to reduce the damping, and when the determination result is no, the lock is instructed to increase the damping.

2. The plant safety device based on face recognition according to claim 1, 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 pre-input constant, and L0 is a pre-input standard frequency value.

3. The plant safety device based on face recognition according to claim 2, characterized in that: The face recognition module 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 value, and when the determination result is yes, the blowing power of the corresponding dust remover is increased, and when the determination result is no, the blowing power is reduced.

4. The plant 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 L, and the face recognition module is used to adjust the blowing power of the corresponding dust remover to P, where P=-ax²+b, a and b are pre-input constants, x=L / L0, and L0 is a pre-input standard frequency value. The control panel is also included for inputting the values of L0 and c.

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