Substation operation and maintenance construction site access channel safety management and control system and method

Abstract

The invention discloses a power transformation operation and maintenance construction site access channel safety management and control system and method, and the system comprises a visual sensor, a holder, an RFID reader, a laser sensor, a controller, an alarm, and a positioning system. The visual sensor and the holder are arranged on the non-construction area side of the access channel, the RFID reader is a directional reader and is arranged on the holder, and the laser sensor is arranged in the access channel; a plurality of sensors are arranged at the non-construction area end of an access channel, daily monitoring is achieved through a visual sensor, meanwhile, a moving object in video monitoring can serve as a starting signal for starting identity recognition, RFID tag information is obtained, then object information is checked, and the information of the object is checked. And a checked result is used as a signal for starting the laser sensor and is linked with a positioning system in the construction area to position an invading object so as to form an intrusion alarm.

Description

Technical Field

[0001] The present invention relates to the field of construction safety technology, and in particular to a system and method for controlling access safety of a substation operation and maintenance construction site. Background Art

[0002] Substations are the basic structure of power system production activities. With the large-scale implementation of operations such as switching operations, operation and maintenance, equipment inspections, and accident or abnormality handling in substations, how to effectively control the operations at the substation operation and maintenance site and prevent accidents has become a difficult problem in substation operation and maintenance management.

[0003] Among them, security control at the entrance and exit of the construction area is an important place for screening entering personnel and vehicles. It can prevent non-construction personnel and vehicles from entering the construction area and improve construction safety. However, the existing entrance and exit channels are generally equipped with gates, and the gates are opened by fingerprint or facial recognition to enter the construction area. However, such gates and identification equipment are only set up at the personnel entrance and exit channels, and multiple gates and identification equipment are required to increase capital investment. Personnel need to queue up one by one to pass, which affects the entry speed. At the vehicle entrance and exit channels, special personnel are generally arranged to be on duty and guard, and a special license plate recognition system is also required to realize the control of vehicles. However, since it is impossible for the on-duty personnel to always carefully guard the vehicle entrance and exit channels, the vehicle entrance and exit channels cannot effectively control the personnel passing through here, forming a security loophole, and the gates and identification equipment at the personnel entrance and exit channels and the gates and vehicle identification systems at the vehicle entrance and exit channels are incompatible, resulting in excessive investment in equipment and increased costs. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a system and method for the security control of the access channels of a substation operation and maintenance construction site. By adding multiple sensors and alarms at the existing access channels, the integration of personnel and vehicle identification is realized, the investment cost is reduced, and the system has intrusion alarms and real-time positioning of intruders, which facilitates the search for intruders.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a safety control system for the access channel of a substation operation and maintenance construction site, including a visual sensor, a pan / tilt, an RFID reader, a laser sensor, a controller, an alarm and a positioning system, wherein the positioning system is arranged at the construction site to monitor and locate objects in the construction site, and is characterized in that: the visual sensor and the pan / tilt are arranged on the non-construction area side of the access channel, the RFID reader is a directional reader and is arranged on the pan / tilt, and the laser sensor is arranged in the access channel, wherein: Visual sensor: conducts video surveillance of non-construction areas outside the access channel and sends video information to the controller; PTZ: Works under the control of the controller and drives the RFID reader to rotate; RFID reader: works under the control of the controller, communicates with the RFID tags carried by objects in the surveillance video, and sends the acquired RFID tag information to the controller; Laser sensor: works under the control of the controller to determine whether there is an object passing through the access channel and sends the confirmation information to the controller; Controller: Process the video information sent by the visual sensor, obtain whether there is a moving object in the video information, obtain the moving trajectory of the moving object, control the pan / tilt to rotate according to the moving trajectory and send a start signal to the RFID reader; process the RFID tag information sent by the RFID reader to obtain the real-time object information of the moving object; compare the real-time object information with the stored object information to see if they are consistent, and send a start signal to the laser sensor based on the comparison information; send an alarm message to the alarm based on the confirmation information sent by the laser sensor; Alarm: Alarm under the control of the controller.

[0006] Furthermore, the visual sensor, pan / tilt head, RFID reader, laser sensor and alarm communicate with the controller via wired or wireless means.

[0007] Furthermore, the laser sensor is arranged in the entry and exit channel, and the detection direction is perpendicular to the axis of the entry and exit channel.

[0008] Furthermore, the visual sensor and the pan-tilt head are arranged on the same side of the access passage on the non-construction area side, and the visual sensor and the pan-tilt head correspond vertically up and down.

[0009] Furthermore, the controller performs wired or wireless communication with a positioning system in the construction site, sends intrusion information to the positioning system according to confirmation information sent by the laser sensor, and tracks the position of the intruding object.

[0010] Furthermore, the alarm is an audible and visual alarm and / or a mobile communication terminal.

[0011] In order to solve the above technical problems, another technical solution adopted by the present invention is: according to the above safety management and control system, a safety management and control method for access channels at a substation operation and maintenance construction site is proposed, and the steps are: Step 1: Conduct video surveillance of the non-construction area outside the access channel and determine whether there are any moving objects in the surveillance video. If there are, proceed to the next step; Step 2: Process the surveillance video, obtain the moving trajectory of the moving object in the surveillance video, send a start signal to the pan-tilt head and the RFID reader, and send the moving trajectory of the moving object closest to the entrance and exit channel to the pan-tilt head; Step 3: The pan / tilt rotates according to the moving trajectory, so that the directional direction of the RFID reader follows the moving trajectory. The RFID reader communicates with the RFID tag carried by the moving object, obtains the RFID tag information and proceeds to the next step. If the RFID tag information cannot be obtained, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor to cancel the RFID reader's communication and trajectory following of the moving object, and return to step 1. Step 4: Compare the RFID tag information with the stored information. If they are consistent, the RFID reader is released from the communication and track tracking of the moving object, and the process returns to step 1. If they are inconsistent, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor to release the RFID reader from the communication and track tracking of the moving object, and the process returns to step 1. Step 5: The laser sensor enters the working state to determine whether an object passes through the access channel. If yes, proceed to the next step. If no, determine whether the moving trajectory of the marked moving object in step 2 is away from the access channel. If yes, the laser sensor enters the stop working state. Step 6: Send alarm information to the alarm, and send the marked image information to the positioning system to track the location of the intruding object.

[0012] Furthermore, in the step 2, the moving trajectory includes a moving trajectory close to the entrance and exit passage and a moving trajectory away from the entrance and exit passage; The moving trajectory close to the entrance and exit channel is used as the start signal to start the pan / tilt and RFID reader, and the moving trajectory sent to the pan / tilt is the moving trajectory of the moving object closest to the entrance and exit channel among the moving trajectories close to the entrance and exit channel, and the moving trajectory far away from the entrance and exit channel is used as the stop signal for the laser sensor to stop working.

[0013] Furthermore, in step five, if there are multiple marked moving objects, and a marked moving object enters the construction area, a marked moving object is far away from the entrance and exit passage, and a marked moving object neither enters the construction area nor is far away from the entrance and exit passage, the laser sensor is in working state, and the moving objects far away from the entrance and exit passage are removed from the marked image information data received by the positioning system.

[0014] Furthermore, in step six, while the sound and light alarm is activated, the image information of the intruding moving object is sent to the communication mobile terminal, and the moving trajectory of the intruding object is displayed in real time through the communication mobile terminal.

[0015] The beneficial effects of the present invention are: 1. The present invention sets multiple sensors at the non-construction area end of the entrance and exit channel. While realizing daily monitoring through visual sensors, it can also use the moving objects in the video monitoring as the starting signal for starting identity recognition. At the same time, the RFID reader can rotate with the moving object to complete the acquisition of RFID tag information, prevent communication with too many RFID tags at the same time to affect the processing speed, and realize targeted detection. Then the object information is checked, and the checked result is used as a signal to start the laser sensor to determine whether the moving object has entered the construction area, and whether to link with the positioning system in the construction area based on the determined information to locate the intruding object, generate an intrusion alarm, and realize step-by-step start to save electricity. Moreover, identity recognition is performed through RFID tags, and there is no need to distinguish between people and vehicles. Both can be managed and controlled at the same time, and there is no need to set up gates, which reduces investment, and there is no need to queue up to enter, which increases the entry speed.

[0016] 2. In the present invention, the moving trajectory of the object obtained from the monitoring video is used as the rotation trajectory of the pan-tilt head, which ensures that the pan-tilt head rotates with the object, so that the RFID reader on the pan-tilt head is always facing the moving object, which is convenient for communicating with the RFID tag on the object to obtain RFID tag information; and when there are multiple moving objects in the monitoring video at the same time, the moving objects close to the entrance and exit channels are preferentially identified.

[0017] 3. The video sensor in the present invention is a camera, which can only perform video monitoring on the construction area and the non-construction area outside the access channel. Since the laser sensor is arranged in the access channel and the detection direction is perpendicular to the axis of the access channel, it is convenient for the pan-tilt head to move according to the movement trajectory of the object.

[0018] 4. The present invention can be linked with the positioning system in the construction area. After an intrusion is found, a picture of the intruding object is sent to the positioning system. The positioning system searches and identifies the intruding object based on the picture and determines its location in the construction area, making it easier for personnel to find it.

[0019] In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specifically cites preferred embodiments and describes them in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only three of the drawings in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the layout of the system of this application; Figure 2 It is the structural diagram of the system of this application; Figure 3 It is a flow chart of the present application method.

[0022] In the figure, 1-laser sensor, 2-visual sensor; A-construction area, B-non-construction area, A1-entry and exit channel, B1-monitoring area, B2-RFID reader identification area. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items. Embodiment 1

[0025] See also Figure 1-3 , Figure 1 The present invention shows a safety control system for access channel A1 at a substation operation and maintenance construction site, including a visual sensor 2, a pan / tilt, an RFID reader, a laser sensor 1, a controller, an alarm and a positioning system. The positioning system is arranged at the construction site to monitor and locate objects at the construction site. The visual sensor 2 and the pan / tilt are arranged on the non-construction area B side of the access channel A1. The RFID reader is a directional reader and is arranged on the pan / tilt. The laser sensor 1 is arranged in the access channel A1, wherein: Visual sensor 2: performs video monitoring on the non-construction area B outside the access channel A1, forms a monitoring area B1 in the non-construction area B, and sends the video information to the controller; PTZ: Works under the control of the controller and drives the RFID reader to rotate; RFID reader: works under the control of the controller, communicates with the RFID tags carried by the objects in the monitoring video, and sends the acquired RFID tag information to the controller. The RFID reader is a directional reader, and forms an RFID reader identification area B2 in the non-construction area B; the RFID reader identification area B2 swings under the action of the pan / tilt head, so that the maximum identification area formed by the RFID reader identification area B2 is the same as the monitoring area B1; Laser sensor 1: works under the control of the controller to determine whether an object passes through the access channel A1 and sends the confirmation information to the controller; Controller: Process the video information sent by the visual sensor 2, obtain whether there is a moving object in the video information, obtain the moving trajectory of the moving object, control the pan / tilt to rotate according to the moving trajectory and send a start signal to the RFID reader; process the RFID tag information sent by the RFID reader, obtain the real-time object information of the moving object; compare the real-time object information with the stored object information to see if they are consistent, and send a start signal to the laser sensor 1 based on the comparison information; send an alarm message to the alarm based on the confirmation information sent by the laser sensor 1.

[0026] Alarm: Alarm under the control of the controller.

[0027] Among them, the visual sensor 2, the pan / tilt head, the RFID reader, the laser sensor 1 and the alarm communicate with the controller via wired or wireless means.

[0028] Among them, the laser sensor 1 is arranged in the entrance and exit channel A1, and the detection direction is perpendicular to the axis of the entrance and exit channel A1; it is convenient to detect the intruding objects, and the number of laser sensors 1 can be increased to scan the intruding objects, obtain the shape of the intruding objects and compare them with the images in the monitoring video, so as to realize the rapid determination of the intruding objects, prevent the poor angle of the picture in the monitoring video, cause the deformation of the objects in the image, affect the positioning system's incorrect recognition of the intruding objects, and improve the detection success rate.

[0029] Among them, the visual sensor 2 and the pan-tilt head are arranged on the same side of the non-construction area B side of the entrance and exit channel A1, and the visual sensor 2 and the pan-tilt head correspond vertically up and down; the positions of the visual sensor 2 and the pan-tilt head are relatively fixed in coordinates, which reduces the amount of computing processing, increases the operating speed, and facilitates the pan-tilt head to move according to the movement trajectory of the object, so that the RFID reader can better and more timely correspond to the object. Embodiment 2

[0030] like Figure 2As shown, this embodiment is obtained by information linkage of technical features such as the positioning system on the basis of the first embodiment. The remaining technical features are the same as those of the first embodiment, and the similarities are not repeated here. The difference between this embodiment and the first embodiment is that: the controller communicates with the positioning system in the construction site by wire or wireless communication, and sends intrusion information to the positioning system according to the confirmation information sent by the laser sensor 1, so as to track the position of the intruding object; the alarm is an audible and visual alarm and / or a communication mobile terminal.

[0031] In this embodiment, it can be linked with the positioning system in the construction area A. After an intrusion is found, a picture of the intruding object is sent to the positioning system. The positioning system searches and identifies the intruding object based on the picture, and determines its location in the construction area A, which is convenient for personnel to find; at the same time, the trajectory and picture of the intruding object are sent to the communication mobile terminal, which is convenient for personnel to identify and find.

[0032] The internal positioning system is a combination of one or more infrared positioning systems, laser positioning systems, GPRS positioning systems, Beidou positioning systems and RFID positioning systems, which has realized real-time positioning of objects on the construction site.

[0033] The process of using the overall technical solution formed by the above embodiment is another technical solution disclosed in this application, such as Figure 3 As shown, the technical solution is: a method for safety control of access channel A1 at a substation operation and maintenance construction site, the steps of which are: Step 1: Conduct video surveillance of the non-construction area B outside the access channel A1, and determine whether there are any moving objects in the surveillance video. If there are, proceed to the next step; Step 2: Process the surveillance video, obtain the moving trajectory of the moving object in the surveillance video, send a start signal to the pan / tilt and RFID reader, and send the moving trajectory of the moving object closest to the access channel A1 to the pan / tilt; Step 3: The pan / tilt rotates according to the moving trajectory, so that the directional direction of the RFID reader follows the moving trajectory. The RFID reader communicates with the RFID tag carried by the moving object, obtains the RFID tag information and proceeds to the next step. If the RFID tag information cannot be obtained, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor 1 to cancel the RFID reader's communication and trajectory following of the moving object, and return to step 1. Step 4: Compare the RFID tag information with the stored information. If they are consistent, the RFID reader is released from the communication and track tracking of the moving object, and the process returns to step 1. If they are inconsistent, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor 1 to release the RFID reader from the communication and track tracking of the moving object, and the process returns to step 1. Step 5, the laser sensor 1 enters the working state and determines whether an object passes through the access channel A1. If yes, it proceeds to the next step. If no, it determines whether the moving trajectory of the marked moving object in step 2 is away from the access channel A1. If yes, the laser sensor 1 enters the stop working state; Step 6: Send alarm information to the alarm, and send the marked image information to the positioning system to track the location of the intruding object.

[0034] In the step 2, the moving trajectory includes a moving trajectory close to the entrance and exit passage and a moving trajectory away from the entrance and exit passage; The moving trajectory close to the entrance and exit channel is used as the start signal for starting the pan / tilt head and the RFID reader, and the moving trajectory sent to the pan / tilt head is the moving trajectory of the moving object closest to the entrance and exit channel among the moving trajectories close to the entrance and exit channel, and the moving trajectory far away from the entrance and exit channel is used as the stop signal for the laser sensor 1 to stop working.

[0035] In step five, if there are multiple marked moving objects, and a marked moving object enters the construction area A, a marked moving object is away from the entrance and exit channel A1, and a marked moving object neither enters the construction area A nor is away from the entrance and exit channel A1, the laser sensor 1 is in working state, and the moving object away from the entrance and exit channel A1 is removed from the marked image information data received by the positioning system.

[0036] In step six, while the sound and light alarm is activated, the image information of the intruding moving object is sent to the communication mobile terminal, and the moving trajectory of the intruding object is displayed in real time through the communication mobile terminal.

[0037] In addition, you can also complete work sign-in and clock-in based on the tag information recognition results.

[0038] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, this application will not go into details.

[0039] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A safety control system for access channels at a substation operation and maintenance construction site, comprising a visual sensor, a pan / tilt, an RFID reader, a laser sensor, a controller, an alarm and a positioning system, wherein the positioning system is arranged at the construction site to monitor and locate objects at the construction site, and is characterized in that: The visual sensor and the pan-tilt platform are arranged on the non-construction area side of the access passage, the RFID reader is a directional reader and is arranged on the pan-tilt platform, and the laser sensor is arranged in the access passage, wherein: Visual sensor: conducts video surveillance of non-construction areas outside the access channel and sends video information to the controller; PTZ: Works under the control of the controller and drives the RFID reader to rotate; RFID reader: works under the control of the controller, communicates with the RFID tags carried by objects in the surveillance video, and sends the acquired RFID tag information to the controller; Laser sensor: works under the control of the controller to determine whether there is an object passing through the access channel and sends the confirmation information to the controller; Controller: Process the video information sent by the visual sensor, obtain whether there is a moving object in the video information, obtain the moving trajectory of the moving object, control the pan / tilt to rotate according to the moving trajectory and send a start signal to the RFID reader; process the RFID tag information sent by the RFID reader to obtain the real-time object information of the moving object; compare the real-time object information with the stored object information to see if they are consistent, and send a start signal to the laser sensor based on the comparison information; send an alarm message to the alarm based on the confirmation information sent by the laser sensor; Alarm: Alarm under the control of the controller.

2. According to claim 1, a substation operation and maintenance construction site access safety management and control system is characterized by: The visual sensor, the pan / tilt platform, the RFID reader, the laser sensor and the alarm communicate with the controller via wired or wireless means.

3. According to claim 2, a substation operation and maintenance construction site access safety management and control system is characterized by: The laser sensor is arranged in the access channel, and the detection direction is perpendicular to the axis of the access channel.

4. A safety control system for access to substation operation and maintenance construction sites according to claim 3, characterized in that: The visual sensor and the pan-tilt platform are arranged on the same side of the non-construction area side of the access passage, and the visual sensor and the pan-tilt platform correspond vertically up and down.

5. According to claim 4, a substation operation and maintenance construction site access safety management and control system is characterized by: The controller communicates with the positioning system in the construction site by wire or wireless communication, sends intrusion information to the positioning system according to the confirmation information sent by the laser sensor, and tracks the position of the intruding object.

6. A safety control system for access to substation operation and maintenance construction sites according to claim 5, characterized in that: The alarm is an audible and visual alarm and / or a mobile communication terminal.

7. A method for safety control of access to a substation operation and maintenance construction site according to the safety control system of claim 6, comprising the following steps: Step 1: Conduct video surveillance of the non-construction area outside the access channel and determine whether there are any moving objects in the surveillance video. If there are, proceed to the next step; Step 2: Process the surveillance video, obtain the moving trajectory of the moving object in the surveillance video, send a start signal to the pan-tilt head and the RFID reader, and send the moving trajectory of the moving object closest to the entrance and exit channel to the pan-tilt head; Step 3: The pan / tilt rotates according to the moving trajectory, so that the directional direction of the RFID reader follows the moving trajectory. The RFID reader communicates with the RFID tag carried by the moving object, obtains the RFID tag information and proceeds to the next step. If the RFID tag information cannot be obtained, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor to cancel the RFID reader's communication and trajectory following of the moving object, and return to step 1. Step 4: Compare the RFID tag information with the stored information. If they are consistent, the RFID reader is released from the communication and track tracking of the moving object, and the process returns to step 1. If they are inconsistent, the image information of the moving object is obtained through the monitoring video, the image information and the moving object are marked, and a start signal is sent to the laser sensor to release the RFID reader from the communication and track tracking of the moving object, and the process returns to step 1. Step 5: The laser sensor enters the working state to determine whether an object passes through the access channel. If yes, proceed to the next step. If no, determine whether the moving trajectory of the marked moving object in step 2 is away from the access channel. If yes, the laser sensor enters the stop working state. Step 6: Send alarm information to the alarm, and send the marked image information to the positioning system to track the location of the intruding object.

8. A method for safe control of access to substation operation and maintenance construction site according to claim 7, characterized in that: In the step 2, the moving trajectory includes a moving trajectory close to the entrance and exit channel and a moving trajectory away from the entrance and exit channel; The moving trajectory close to the entrance and exit channel is used as the start signal to start the pan / tilt and RFID reader, and the moving trajectory sent to the pan / tilt is the moving trajectory of the moving object closest to the entrance and exit channel among the moving trajectories close to the entrance and exit channel, and the moving trajectory far away from the entrance and exit channel is used as the stop signal for the laser sensor to stop working.

9. A method for safe control of access to substation operation and maintenance construction site according to claim 7, characterized in that: In step five, if there are multiple marked moving objects, and a marked moving object enters the construction area, a marked moving object is far away from the entrance and exit passage, and a marked moving object neither enters the construction area nor is far away from the entrance and exit passage, the laser sensor is in working state, and the moving objects far away from the entrance and exit passage are removed from the marked image information data received by the positioning system.

10. A method for safe control of access to substation operation and maintenance construction site according to claim 7, characterized in that: In the step six, the image information of the intruding moving object is sent to the communication mobile terminal at the same time as the sound and light alarm is activated, and the moving track of the intruding object is displayed in real time through the communication mobile terminal.

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