CN109543625B - Mine personnel unique identification system and method - Google Patents
Mine personnel unique identification system and method Download PDFInfo
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- CN109543625B CN109543625B CN201811422372.8A CN201811422372A CN109543625B CN 109543625 B CN109543625 B CN 109543625B CN 201811422372 A CN201811422372 A CN 201811422372A CN 109543625 B CN109543625 B CN 109543625B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/172—Classification, e.g. identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a unique identification system and method for mine personnel, wherein the system comprises the following steps: the system comprises a positioning card, a positioner, a face recognition device, a personnel limiting device, a limiting gate and an automatic alarm device. The positioning card comprises a first communication module and an inertial navigation module, wherein the inertial navigation module is used for acquiring the posture data of mine personnel, and the first communication module is used for sending a wireless information frame and the posture data; the locator comprises a second communication module, wherein the second communication module is used for sending a wireless access frame and sending the card number of the effective locating card to the face recognition server; the face recognition device comprises a face recognition server, wherein the face recognition server is provided with a person certificate database, and the person certificate database is used for storing reference face data and person numbers. According to the invention, the accuracy and reliability of unique detection of the well head are improved by combining the face recognition result, the card detection result and the inertial navigation measurement result. And judging whether a situation of multiple cards of one person exists underground or not by combining the personnel positioning data and the inertial navigation attitude detection.
Description
Technical Field
The invention relates to the technical field of mine monitoring, in particular to a unique identification system and method for mine personnel.
Background
The personnel management system is one of six systems for coal mine safety risk avoidance, and plays an important role in the safety production of coal mines. The personnel management system performs position location, well access and attendance management on underground workers by providing each well access worker with a positioning card. To ensure the effectiveness of the personnel management system, it must be ensured that each entry person carries and only carries one locator card, i.e. that each well entry person carries a locator card with "uniqueness". General technical conditions of underground coal mine worker management systems (AQ 6210-2007) require that "each worker should be provided with a device for detecting whether the identification card works normally and for detecting uniqueness".
In practical application, the unique identification and detection of the personnel positioning card are difficult to automatically and effectively realize, a certain system or manual management measures are generally combined for assistance, and the phenomena of card punching, shift replacement, card leakage, one person with multiple cards and the like are difficult to avoid, so that certain hidden danger is brought to the safety production of a mine.
In the prior art, patent application 201710589974.1 discloses a mine uniqueness identification device and method based on RSSI detection, wherein a weighted average RSSI filtering value of positioning equipment is used for judging whether a detection person in a metal door detection area wears the positioning equipment or carries a plurality of positioning equipment or not. The RSSI, namely the received signal strength indication, is extremely easily influenced by the direction of the built-in antenna of the positioning equipment, and when a person moves, the RSSI easily fluctuates and changes drastically, so that each positioning card is difficult to distinguish effectively, and misjudgment and missed judgment are easy to occur.
In addition, some biometric identification techniques are also applied to unique identification of mines, such as face recognition, iris recognition, voiceprint recognition, and the like. Patent application 201711279864.1 discloses a unique detection device of an access mine based on iris recognition and fingerprint recognition, and the problem of low recognition rate of a single biological recognition technology is relieved to a certain extent. The biological recognition technology can solve the phenomena of card punching, card replacement and the like to a certain extent, but can not effectively prevent the problems of multiple cards, card leakage and the like of one person. If false recognition or missing recognition occurs, personnel do not carry cards or carry multiple cards at the moment, and the safety management of the mine is necessarily affected to a certain extent. Although the probability of occurrence of the situation is lower, corresponding technical measures are required under the principle of safety and no small trouble, so that the phenomenon that workers enter a mine or enter the mine to automatically screen multiple cards of one person and the like is avoided under the condition that the biological identification technology fails.
Disclosure of Invention
In order to solve the problems of multiple cards and missing cards of one person in the prior art, the invention provides a system and a method for identifying the uniqueness of the mine personnel.
In one aspect, the invention provides a mine personnel unique identification system, comprising: the system comprises a positioning card, a positioner, a face recognition device, a personnel limiting device, a limiting gate and an automatic alarm device;
the positioning card comprises a first communication module and an inertial navigation module, wherein the inertial navigation module is used for acquiring gesture data of mine personnel, the first communication module is used for sending a wireless information frame and the gesture data, and the wireless information frame carries a card number and a wireless signal strength RSSI of the positioning card;
the locator comprises the second communication module and an antenna, wherein the second communication module is used for sending a wireless access frame, receiving the wireless information frame sent by a locating card, and sending the card number of an effective locating card to a face recognition server, and the effective locating card refers to a locating card with the wireless signal strength RSSI being larger than a preset strength threshold;
the face recognition device comprises a camera and the face recognition server, wherein the camera is used for collecting actual face data of mine personnel; the face recognition server is provided with a person certificate database and face recognition software; the human license database is used for storing reference face data and personnel numbers corresponding to the reference face data;
the personnel limiting device is used for limiting only one person to pass each time, triggering the face recognition device to start face recognition, and triggering the locator to start locator card recognition.
Further, the locator card further comprises: the positioning module is used for positioning the underground position of mine personnel, and the positioning accuracy of the positioning module is not more than 10m.
Further, the antenna is a directional antenna, and an antenna beam of the directional antenna is aligned with the personnel restraint device.
Further, the personnel access device comprises a signal shielding module for shielding a locator card outside the personnel access device.
In another aspect, the invention provides a method for uniquely identifying mine personnel, the method comprising:
step 1, when a personnel limiting device senses that a mine personnel enters, triggering a face recognition device to start face recognition, and triggering a positioner to start positioning card recognition;
step 2, after the face recognition device receives the trigger signal, a camera is started to collect face data of mine personnel in the personnel limiting device, and the personnel number of the mine personnel is determined through a face recognition server;
step 3, after the locator receives the trigger signal, a wireless access frame is sent out through a second communication module, after a locating card in the wireless coverage area of the locator receives the wireless access frame, attitude data of mine personnel are collected through an inertial navigation module, a wireless information frame and the attitude data are responded to the locator through a first communication module, and the wireless information frame carries the card number of the locating card and the RSSI of wireless signal intensity;
step 4, after the locator obtains the card numbers and the wireless signal intensity RSSI of the plurality of locating cards, comparing the wireless signal intensity RSSI of the plurality of locating cards with a preset threshold, marking the locating cards with the wireless signal intensity RSSI larger than the preset threshold as effective locating cards, and then sending the card numbers of the effective locating cards to a face recognition server;
and 5, the face recognition server obtains a unique recognition result of the mine personnel at the well head according to the personnel number of the mine personnel, the attitude data and the card number of the effective positioning card.
Further, the step 5 specifically includes:
step 51, if no personnel number exists in the personnel identification database, judging that abnormal intrusion exists, and alarming by an automatic alarming device;
step 52, if a card number and a personnel number are available and the card number and the personnel number are in one-to-one correspondence, judging that the gate is normally passing, and restricting the gate to pass;
step 53, if at least two card numbers and one personnel number exist, comparing the gesture data of the effective positioning card corresponding to the at least two card numbers, and obtaining a unique identification result of the personnel in the mine at the well mouth according to the comparison result;
step 54, if at least two personnel numbers exist, judging that a plurality of persons enter the face recognition area, sending a prompt, and re-detecting after exiting;
and step 55, if one personnel number exists, but the identification card number corresponding to the personnel number does not exist, and the automatic alarm device alarms when judging that the card is not provided.
Further, the step 53 specifically includes:
according to the gesture data of different effective positioning cards in the same time period, calculating the gesture type and gesture average value of each effective positioning card;
if the gesture types of the effective positioning cards are consistent and the gesture average value is within [ -thresh_pos and thresh_pos ], judging that the effective positioning cards are multiple cards, and alarming by the automatic alarm device;
if the gesture types of the effective positioning cards are inconsistent or the gesture average value is not within [ -thresh_poseout ], judging that the effective positioning cards are invalid to be detected, sending out a prompt, and re-detecting after exiting, wherein the thresh_poseout is a set first gesture threshold value.
Further, the method further comprises:
step 6, the face recognition server respectively calculates gesture data sent by different positioning cards in time T, and gesture types and gesture average values of the positioning cards in the time T;
step 7, if the gesture types of different positioning cards are the same and the corresponding gesture data are all in [ gesture mean value-thresh_pos_in, gesture mean value +thresh_pos_in ] in the time T, the face recognition server considers the gesture of the different positioning cards to be the same gesture, wherein the thresh_pos_in is a set second gesture threshold;
step 8, the face recognition server respectively counts the underground position data sent by different positioning cards in the time T and the average position data of each positioning card in the time T;
step 9, if the position data of different positioning cards are all located in the range of the average position + -thresh xy in the time T, the face recognition server considers that the different positioning cards are located in the same position, wherein thresh xy is a set position threshold;
and step 10, if the postures of the different positioning cards are the same, and the different positioning cards are at the same position, prompting that a person risk with multiple cards exists, and giving an alarm by the automatic alarm device.
Further, the position threshold value thresh xy is greater than the positioning accuracy of the positioning card.
The invention has the beneficial effects that:
the invention provides a unique identification system and a unique identification method for mine personnel, which are characterized in that firstly, the card number and the RSSI value of a positioning card are determined through information interaction between the positioning card and a communication module in the positioning device, and the positioning device screens out effective positioning cards from a plurality of positioning cards through setting an intensity threshold value, so that the interference positioning card outside a detection area is removed, and the identification accuracy of the positioning card is improved; secondly, after directional RSSI anti-collision and screening treatment, the number of effective positioning cards is greatly reduced, but the possibility that invalid positioning cards enter an identification area still exists, so that the positioning cards are further screened by adopting an inertial navigation module in an auxiliary manner, namely, the attitude data of mine personnel acquired by the inertial navigation module are combined with the card numbers of the effective positioning cards and the personnel numbers acquired by a face recognition server, the card carrying condition of the mine personnel at an entrance well mouth is specifically analyzed, and the accuracy of unique identification is further improved; further, through setting up the positioning module, the underground position information of mine personnel that gathers with the positioning module combines together with the gesture data that inertial navigation module gathered, carries out the analysis to the condition of carrying card of mine personnel in the pit. From the above, the invention forms the complete process of uniqueness detection of the well entrance and exit and uniqueness detection of the well, ensures that mine staff keeps the safety state of one person and one card in a complete workflow, and further standardizes the mine safety management mechanism.
Drawings
FIG. 1 is a schematic diagram of a unique identification system for mine personnel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a unique identification system for mine personnel according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a positioning card according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a locator antenna according to an embodiment of the invention;
fig. 5 is a schematic diagram of a locator antenna according to another embodiment of the present disclosure;
FIG. 6 is a schematic flow chart of a method for uniquely identifying mine personnel according to an embodiment of the present invention;
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, the unique identification system for mine personnel provided by the present invention includes: a positioning card 11, a positioning device 12, a face recognition device 13, a personnel limiting device 14, a limiting gate 15 and an automatic alarm device 16; wherein, the liquid crystal display device comprises a liquid crystal display device,
the positioning card 11 comprises a first communication module and an inertial navigation module, wherein the inertial navigation module is used for acquiring gesture data of mine personnel, the first communication module is used for sending a wireless information frame and the gesture data, and the wireless information frame carries a card number of the positioning card and wireless signal strength RSSI; the locator 12 includes the second communication module and an antenna, where the second communication module is configured to send a radio access frame, receive the radio information frame sent by a locator card, and send a card number of an effective locator card to a face recognition server, where the effective locator card refers to a locator card with a radio signal strength RSSI greater than a preset strength threshold; the face recognition device 13 comprises a camera and the face recognition server, wherein the camera is used for collecting actual face data of mine personnel; the face recognition server is provided with a person certificate database and face recognition software; the human license database is used for storing reference face data and personnel numbers corresponding to the reference face data; the person limiting means 14 are for limiting the passage of only one person at a time and for triggering the face recognition means to activate face recognition and at the same time triggering the locator to activate locator card recognition.
Specifically, the workflow of the system is as follows: the locator card 11 is worn on the body of a mine personnel, the camera is arranged at a well entrance, and after the well entrance personnel enter the personnel limiting device 14, the face recognition and the locator card recognition are triggered through infrared or gravity sensing and other devices. As an embodiment of the invention, the mine personnel blocks the infrared correlation signal provided on the personnel access device 14, thereby triggering the face recognition device 13 to initiate the face recognition process, and triggering the locator 12 to initiate the locator card recognition process.
After the locator 12 receives the trigger signal sent by the personnel access device 14, the identification process of the locator card is as follows: firstly, a wireless access frame is sent out through a second communication module, after the positioning card 11 in the wireless coverage area of the positioning device 12 receives the wireless access frame, a wireless information frame is responded to the positioning device 12 through a first communication module, the wireless information frame carries the card number of the positioning card and the RSSI information of the wireless signal strength, and secondly, after the positioning device 12 receives the wireless information frame, the card number and the RSSI of the positioning card are extracted from the wireless information frame. The locator 12 is provided with an intensity threshold value, the locator 12 compares the received RSSI of the plurality of locator cards with the intensity threshold value, records the locator cards with the RSSI greater than the intensity threshold value as effective locator cards, and then sends the card numbers of the effective locator cards to the face recognition server. Furthermore, attitude data of mine personnel are collected through an inertial navigation module arranged in the positioning card 11. As one embodiment of the present invention, the posture data includes acceleration, angle data. The locator card 11 transmits the gesture data to the face recognition server through the first communication module.
After the face recognition device 13 receives the trigger signal sent by the personnel limiting device 14, the face recognition process is as follows: the camera is started to collect actual face data of mine personnel located in the detection area in the personnel limiting device 14, and the face recognition software matches the actual face data with reference face data in the person identification database, so that personnel numbers corresponding to the matched reference face data are obtained.
After receiving the card number and the gesture data of the effective positioning card sent by the positioning card 11, the face recognition server combines the acquired personnel numbers to perform specific analysis on the card carrying condition of the logging personnel, and the content of the specific analysis will be specifically described in the following method embodiments, which are not repeated here.
The face recognition server can be a computer with video image processing functions such as a GPU, and a person identification database and face recognition software are installed in the computer. The face recognition software is internally provided with a face recognition engine based on deep learning, and face data collected underground is used as training data, so that the face recognition engine has the capability of working in a complex mine environment.
The person limiting device 14 limits passage of only one person at a time, preventing multiple persons from entering the unique detection zone at the same time.
As can be seen from the above, the unique identification system for mine personnel provided by the invention firstly determines the card number and the RSSI value of the locator card through information interaction between the locator card and the communication module inside the locator card, and enables the locator card to screen out effective locator cards from a plurality of locator cards through setting the strength threshold value, so as to remove the interference locator card outside the detection area, and improve the identification accuracy of the locator card; secondly, after directional RSSI anti-collision and screening treatment, the number of effective positioning cards is greatly reduced, but the possibility that invalid positioning cards enter an identification area still exists, so that the positioning cards are further screened by adopting an inertial navigation module in an auxiliary mode, namely, the attitude data of mine personnel acquired by the inertial navigation module are combined with the card numbers of the effective positioning cards and the personnel numbers acquired by a face recognition server, the card carrying condition of the mine personnel at an entrance well mouth is specifically analyzed, and the accuracy of unique identification is further improved.
On the basis of the above embodiment, the locator card further includes: the positioning module is used for positioning the underground position of mine personnel, and the positioning accuracy of the positioning module is not more than 10m.
Specifically, the above embodiment mainly solves the problem of unique identification of mine personnel at the well entrance, avoids the phenomena of modern card punching, card replacement, one person with multiple cards or card leakage when the mine personnel enter the well, and solves the problem of unique identification of the mine personnel underground by integrating the positioning module in the positioning card as shown in fig. 3. The positioning module realizes accurate positioning of personnel at the underground position. Because the underground GPS and other signals are not available, the positioning technologies such as GPS/Beidou and the like which are commonly used on the ground cannot be used, and the underground positioning technologies such as RSSI positioning, TOF positioning, TDOA positioning, geomagnetic positioning and the like can be adopted but are not limited to. To ensure the effect of identifying the uniqueness of the locator card by means of downhole location data, the location accuracy of the locator module should generally not be greater than 10m, alternatively the location accuracy of the locator module should be less than 3m. The working principle of the embodiment of the present invention will be specifically described in the method embodiment, and will not be described herein.
When a plurality of locator cards are located near the locator, the locator card signals may collide in the air. As an embodiment of the present invention, the antenna in the locator adopts a directional antenna, so that the antenna beam is directed to the personnel access device, thereby ensuring that the RSSI of the locator card 11 carried by the mine personnel entering the detection area inside the personnel access device is far higher than the RSSI of the locator card 11 carried by the mine personnel located outside the personnel access device and sent to the locator 12.
As another embodiment of the invention, the personnel access device 14 is provided with a signal shielding module for shielding a locator card external to the personnel access device. The signal shielding module may be a metal shield, a metal door, or a metal housing such as a metal box or box that opens into the interior of the personnel access device 14. The antenna of the locator is arranged on the inner side of the metal baffle plate or the metal door or the inside of the metal shell such as the metal box or the metal box, and the antenna beam is emitted to the detection area through the opening. In this way, the RSSI of the locator card 11 carried by the mine personnel entering the personnel limiting device sent to the locator 12 can be ensured to be far higher than the RSSI of the locator card 11 carried by the mine personnel located outside the personnel limiting device sent to the locator 12.
When a person stands near the person limiting device, the locator can receive information of a plurality of locator cards, wireless signals of the plurality of locator cards are easy to collide, and misjudgment is caused by a certain probability. Whether the directional antenna or the shielding has a certain coverage area or has a certain probability of misjudgment, further, the inertial navigation module arranged in the positioning card is combined for further screening, and the uniqueness detection is ensured not to be influenced by the nearby positioning card. By adopting a face recognition scheme based on depth recognition and by collecting underground face data and training a face recognition engine, the face recognition engine has the capability of working in a complex mine environment. Compared with the traditional feature recognition face recognition system, the depth recognition-based face recognition has higher recognition rate and recognition speed. The positioning card with the positioning module is adopted, so that the unique identification system has the capability of judging the card carrying state of the personnel through the position of the personnel; the positioning card is internally provided with an inertial navigation module, and the card carrying state of the personnel is judged by detecting the gesture of the personnel and combining the position of the positioning card; the invention can not only carry out unique identification at the well entrance, but also further carry out unique detection after personnel enter the mine.
The invention provides a unique identification system for mine personnel, which is used for carrying out face identification on personnel entering a well, comparing the face identification with personnel data of a background database and outputting whether the personnel are consistent or not; through directional RSSI detection, multi-card collision is prevented; combining an inertial navigation module arranged in the positioning card, and combining a face recognition result, a card detection result and an inertial navigation measurement result through judging the posture of a person entering a well head, so that the accuracy and the reliability of the uniqueness detection are improved; after the personnel enter the mine, the personnel positioning data and inertial navigation attitude detection are combined to judge whether the situation of multiple cards of the personnel after entering the mine exists. The face recognition technology based on deep learning is adopted, so that the face recognition can be more suitable for the complex environment of the mine; the positioning card detection technology based on inertial navigation and directional RSSI detection is adopted, so that the influence of peripheral positioning cards on the uniqueness detection is avoided, and misjudgment, omission and judgment are eliminated; and the logic judgment combining positioning and inertial navigation is adopted to solve the accuracy problem of the RSSI uniqueness judgment. By comprehensively adopting the technical scheme, the problems that the prior art is complex in application, high in omission factor, incapable of tracking and detecting after entering a mine and the like are solved, and a more favorable automatic management scheme is provided for mine safety production.
Fig. 6 is a flow chart of a unique identification method for mine personnel according to an embodiment of the present invention. The method comprises the following steps:
s601, when a person limiting device senses that a mine person enters, triggering a face recognition device to start face recognition, and triggering a positioner to start positioning card recognition;
s602, after the face recognition device receives a trigger signal, a camera is started to collect face data of mine personnel in the personnel limiting device, and the personnel number of the mine personnel is determined through a face recognition server;
s603, after the locator receives the trigger signal, a wireless access frame is sent out through a second communication module, after a locating card located in the wireless coverage area of the locator receives the wireless access frame, attitude data of mine personnel are collected through an inertial navigation module, a wireless information frame and the attitude data are responded to the locator through a first communication module, and the wireless information frame carries a card number of the locating card and wireless signal strength RSSI;
s604, after the locator obtains card numbers and wireless signal intensity RSSI of a plurality of locating cards, comparing the wireless signal intensity RSSI of the plurality of locating cards with a preset threshold, marking the locating cards with the wireless signal intensity RSSI larger than the preset threshold as effective locating cards, and then sending the card numbers of the effective locating cards to a face recognition server;
s605, the face recognition server obtains a unique recognition result of the mine personnel at the well head according to the personnel number of the mine personnel, the gesture data and the card number of the effective positioning card.
As can be seen from the above, firstly, the card number and the RSSI value of the locator card are determined through information interaction between the locator card and the communication module inside the locator, and the locator card is enabled to screen out the effective locator card from the plurality of locator cards through setting the intensity threshold, so that the interference locator card outside the detection area is removed, and the identification accuracy of the locator card is improved; secondly, after directional RSSI anti-collision and screening treatment, the number of effective positioning cards is greatly reduced, but the possibility that invalid positioning cards enter an identification area still exists, so that the positioning cards are further screened by adopting an inertial navigation module in an auxiliary mode, namely, the attitude data of mine personnel acquired by the inertial navigation module are combined with the card numbers of the effective positioning cards and the personnel numbers acquired by a face recognition server, the card carrying condition of the mine personnel at an entrance well mouth is specifically analyzed, and the accuracy of unique identification is further improved.
On the basis of the above embodiment, the step S605 includes:
s6051, if no personnel number exists in the personnel identification database, judging that abnormal intrusion occurs, and alarming by an automatic alarming device;
s6052, if a card number and a personnel number are available, the card number and the personnel number are in one-to-one correspondence, and the normal passing is judged, the restricted gate is released;
s6053, if at least two card numbers and one personnel number are provided, comparing the gesture data of the effective positioning card corresponding to the at least two card numbers, and obtaining a unique identification result of the mine personnel at the well mouth according to the comparison result, wherein the specific process is as follows:
according to the gesture data of different effective positioning cards in the same time period, calculating the gesture type and gesture average value of each effective positioning card;
if the gesture types of the effective positioning cards are consistent and the gesture average value is within [ -thresh_pos and thresh_pos ], judging that the effective positioning cards are multiple cards, and alarming by the automatic alarm device;
if the gesture types of the effective positioning cards are inconsistent or the gesture average value is not within [ -thresh_poseout ], judging that the effective positioning cards are invalid to be detected, sending out a prompt, and re-detecting after exiting, wherein the thresh_poseout is a set first gesture threshold value.
S6054, if at least two personnel numbers exist, judging that a plurality of persons enter a face recognition area, sending a prompt, and re-detecting after exiting;
s6055, if one personnel number exists, but the identification card number corresponding to the personnel number does not exist, and the automatic alarm device alarms when judging that the card is not provided.
On the basis of the above embodiments, the method further includes:
s606, the face recognition server respectively calculates gesture data sent by different positioning cards in time T, and gesture types and gesture average values of the positioning cards in the time T;
s607, if the gesture types of different positioning cards are the same and the corresponding gesture data are all in [ gesture mean value-thresh_pos_in, gesture mean value +thresh_pos_in ] in the time T, the face recognition server considers the gesture of the different positioning cards to be the same gesture, wherein the thresh_pos_in is a set second gesture threshold;
s608, the face recognition server respectively counts the underground position data sent by different positioning cards in the time T and the average position data of each positioning card in the time T;
s609, if the position data of different positioning cards are all in the range of the average position + -thresh xy in the time T, the face recognition server considers that the different positioning cards are in the same position, wherein thresh xy is a set position threshold;
s610, if the postures of the different positioning cards are the same posture and the different positioning cards are at the same position, prompting underground personnel to have a risk of multiple cards by one person, and giving an alarm by the automatic alarm device.
Specifically, the embodiment illustrated in fig. 6 mainly illustrates a unique identification flow of a mine personnel at an entrance well, and the embodiment of the invention adds a unique identification flow of the mine personnel at an underground on the basis of the foregoing embodiment, that is, the underground position data measured by the positioning module and the attitude data measured by the inertial navigation module are combined, so as to comprehensively judge the card carrying condition of the underground personnel.
In order to further improve the accuracy of unique identification of underground personnel, the positioning accuracy of the positioning card is smaller than thresh xy.
The invention provides a unique identification method for mine personnel, which comprises the steps of firstly, determining the card number and RSSI value of a positioning card through information interaction between the positioning card and a communication module in the positioning device, and setting an intensity threshold value to enable the positioning device to screen out effective positioning cards from a plurality of positioning cards, removing an interference positioning card outside a detection area, and improving the identification accuracy of the positioning card; secondly, after directional RSSI anti-collision and screening treatment, the number of effective positioning cards is greatly reduced, but the possibility that invalid positioning cards enter an identification area still exists, so that the positioning cards are further screened by adopting an inertial navigation module in an auxiliary manner, namely, the attitude data of mine personnel acquired by the inertial navigation module are combined with the card numbers of the effective positioning cards and the personnel numbers acquired by a face recognition server, the card carrying condition of the mine personnel at an entrance well mouth is specifically analyzed, and the accuracy of unique identification is further improved; further, through setting up the positioning module, the underground position information of mine personnel that gathers with the positioning module combines together with the gesture data that inertial navigation module gathered, carries out the analysis to the condition of carrying card of mine personnel in the pit. From the above, the embodiment of the invention forms a complete process of uniqueness detection of the access wellhead and uniqueness detection of the underground, ensures that mine workers maintain a one-person-one-card safety state in a complete workflow, and further standardizes a mine safety management mechanism.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A mine personnel unique identification system, comprising: the device is characterized by comprising a positioning card, a positioning device, a face recognition device, a personnel limiting device, a limiting gate and an automatic alarm device,
the positioning card comprises a first communication module and an inertial navigation module, wherein the inertial navigation module is used for acquiring gesture data of mine personnel, the first communication module is used for sending a wireless information frame and the gesture data, and the wireless information frame carries a card number and a wireless signal strength RSSI of the positioning card;
the locator comprises a second communication module and an antenna, wherein the second communication module is used for sending a wireless access frame, receiving the wireless information frame sent by a locating card, and sending the card number of an effective locating card to a face recognition server, and the effective locating card refers to a locating card with the wireless signal strength RSSI being larger than a preset strength threshold;
the face recognition device comprises a camera and the face recognition server, wherein the camera is used for collecting actual face data of mine personnel; the face recognition server is provided with a person certificate database and face recognition software; the human license database is used for storing reference face data and personnel numbers corresponding to the reference face data;
the personnel limiting device is used for limiting only one person to pass each time, triggering the face recognition device to start face recognition, and triggering the locator to start positioning card recognition;
the face recognition server is used for obtaining a unique recognition result of the mine personnel at the well head according to the personnel number of the mine personnel, the attitude data and the card number of the effective positioning card, and specifically comprises the following steps:
if no personnel number exists in the personnel identification database, judging that the personnel number is abnormal, and alarming by an automatic alarming device;
if a card number and a personnel number are available and the card number corresponds to the personnel number one by one, judging that the gate normally passes, and allowing the gate to pass;
if at least two card numbers and one personnel number exist, comparing the gesture data of the effective positioning card corresponding to the at least two card numbers, and obtaining a unique identification result of the personnel in the mine at the well mouth according to the comparison result, wherein the method specifically comprises the following steps: according to the gesture data of different effective positioning cards in the same time period, calculating the gesture type and gesture average value of each effective positioning card; if the gesture types of the effective positioning cards are consistent and the gesture average value is within [ -thresh_pos and thresh_pos ], judging that the effective positioning cards are multiple cards, and alarming by the automatic alarm device; if the gesture types of the effective positioning cards are inconsistent or the gesture average value is not within [ -thresh_poseout ], judging that the effective positioning cards are invalid to be detected, sending a prompt, and re-detecting after exiting, wherein the thresh_poseout is a set first gesture threshold value;
if at least two personnel numbers exist, judging that a plurality of persons enter the face recognition area, sending a prompt, and re-detecting after exiting;
if one personnel number exists, but no identification card number corresponding to the personnel number exists, and the judgment is that the card is not carried, the automatic alarm device alarms.
2. The system of claim 1, wherein the locator card further comprises: the positioning module is used for positioning the underground position of mine personnel, and the positioning accuracy of the positioning module is not more than 10m.
3. The system of claim 1, wherein the antenna is a directional antenna, an antenna beam of the directional antenna being directed at the personnel restraint device.
4. The system of claim 1, wherein the personnel access device includes a signal shielding module for shielding a locator card external to the personnel access device.
5. A method for uniquely identifying a mine person, comprising:
step 1, when a personnel limiting device senses that a mine personnel enters, triggering a face recognition device to start face recognition, and triggering a positioner to start positioning card recognition;
step 2, after the face recognition device receives the trigger signal, a camera is started to collect face data of mine personnel in the personnel limiting device, and the personnel number of the mine personnel is determined through a face recognition server;
step 3, after the locator receives the trigger signal, a wireless access frame is sent out through a second communication module, after a locating card in the wireless coverage area of the locator receives the wireless access frame, attitude data of mine personnel are collected through an inertial navigation module, a wireless information frame and the attitude data are responded to the locator through a first communication module, and the wireless information frame carries the card number of the locating card and the RSSI of wireless signal intensity;
step 4, after the locator obtains the card numbers and the wireless signal intensity RSSI of the plurality of locating cards, comparing the wireless signal intensity RSSI of the plurality of locating cards with a preset threshold, marking the locating cards with the wireless signal intensity RSSI larger than the preset threshold as effective locating cards, and then sending the card numbers of the effective locating cards to a face recognition server;
step 5, the face recognition server obtains a unique recognition result of the mine personnel at the well mouth according to the personnel number of the mine personnel, the attitude data and the card number of the effective positioning card;
the step 5 specifically includes:
step 51, if no personnel number exists in the personnel identification database, judging that abnormal intrusion exists, and alarming by an automatic alarming device;
step 52, if a card number and a personnel number are available and the card number and the personnel number are in one-to-one correspondence, judging that the gate is normally passing, and restricting the gate to pass;
step 53, if at least two card numbers and one personnel number exist, comparing the gesture data of the effective positioning card corresponding to the at least two card numbers, and obtaining a unique identification result of the personnel in the mine at the well mouth according to the comparison result; the step 53 specifically includes: according to the gesture data of different effective positioning cards in the same time period, calculating the gesture type and gesture average value of each effective positioning card; if the gesture types of the effective positioning cards are consistent and the gesture average value is within [ -thresh_pos and thresh_pos ], judging that the effective positioning cards are multiple cards, and alarming by the automatic alarm device; if the gesture types of the effective positioning cards are inconsistent or the gesture average value is not within [ -thresh_poseout ], judging that the effective positioning cards are invalid to be detected, sending a prompt, and re-detecting after exiting, wherein the thresh_poseout is a set first gesture threshold value;
step 54, if at least two personnel numbers exist, judging that a plurality of persons enter the face recognition area, sending a prompt, and re-detecting after exiting;
and step 55, if one personnel number exists, but the identification card number corresponding to the personnel number does not exist, and the automatic alarm device alarms when judging that the card is not provided.
6. The method as recited in claim 5, further comprising:
step 6, the face recognition server respectively calculates gesture data sent by different positioning cards in time T, and gesture types and gesture average values of the positioning cards in the time T;
step 7, if the gesture types of different positioning cards are the same and the corresponding gesture data are all in [ gesture mean value-thresh_pos_in, gesture mean value +thresh_pos_in ] in the time T, the face recognition server considers the gesture of the different positioning cards to be the same gesture, wherein the thresh_pos_in is a set second gesture threshold;
step 8, the face recognition server respectively counts the underground position data sent by different positioning cards in the time T and the average position data of each positioning card in the time T;
step 9, if the position data of different positioning cards are all located in the range of the average position + -thresh xy in the time T, the face recognition server considers that the different positioning cards are located in the same position, wherein thresh xy is a set position threshold;
and step 10, if the postures of the different positioning cards are the same, and the different positioning cards are at the same position, prompting underground personnel to have a risk of multiple cards by one person, and giving an alarm by the automatic alarm device.
7. The method of claim 6, wherein the position threshold thresh xy is greater than the positioning accuracy of the locator card.
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