CN111599069A - An on-site security management method based on biometric technology - Google Patents

Abstract

An on-site safety management method based on biometric identification technology belongs to the field of safety devices. It is provided with a fingerprint identification unit, a side arm extension/retraction unit and an alarm unit on the insulating baffle; the licensor enters the fingerprint into the fingerprint identification unit when arranging security measures, and the fingerprint identification unit stores the fingerprint; the insulating baffle Put it in the switch compartment, press the "start" button, the side arm extends, and the insulating baffle is fixed at the door of the switch cabinet; when the licensee finishes the license, enter the licensee's fingerprint again; the fingerprint identification unit will again The fingerprints entered are compared and matched with the fingerprints entered at the beginning of the license; if the two entered fingerprints match, the “close” button of the bezel can be activated, the side arm can be retracted, and the bezel can be removed; if the two entered fingerprints are inconsistent When the insulation baffle alarm system is activated, an alarm is issued. It combines biometric technology with on-site security measures. The unique unlocking of the insulating baffle is ensured.

Description

An on-site security management method based on biometric technology

technical field

The invention belongs to the field of safety devices, in particular to an on-site safety measure and a safety device used for the maintenance of switch cabinets in substations.

Background technique

With the rapid development of society and economy, the scale of the power grid continues to grow, and the number of equipment that needs to be maintained and managed is gradually increasing and the types are various, which leads to the increasing workload of maintenance and testing. In order to ensure that a large number of repair and trial work can be completed normally and achieve zero accident rate, the arrangement of the licensor's safety measures in the licensing work is particularly important.

It is stipulated in the "Power System Safety Operation Regulations" that the safety responsibilities of the work permit person include:

1. Responsible for reviewing whether the safety measures listed in the work ticket are correct and complete, and whether they meet the site conditions;

2. Whether the safety measures arranged at the work site are perfect;

3. Responsible for checking whether the power outage equipment is in danger of sudden electricity;

4. Responsible for checking whether the safety measures contained in the work ticket are correct and complete, and whether the safety measures taken by the on-duty staff conform to the actual conditions on site;

5. Before working, inform the members of the work class about the danger points, explain the safety measures and technical measures, and confirm that every member of the work class is aware of it.

In actual work, when the licensor is arranging the safety measures for the operation or overhauling the site, if the work task review of the day is not clear or the survey of the on-site equipment status is not in place, etc., it is easy to appear the sign (also known as the insulating baffle). Missing or even hanging in the wrong position (position refers to the switch cabinet where the high-voltage switch to be operated is located). At the same time, during the working process, it is easy for the signboard to be scraped off or moved due to the operation or movement of the operator. Once the above situation occurs, it will pose a threat to the safety of personal equipment.

In order to prevent the occurrence of the above-mentioned hidden dangers, it is necessary to improve the layout of the existing security measures to realize the intelligent operation and management of the security measures on the licensed site.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an on-site security management method based on biometric identification technology. It adopts biometric technology to attach the function of adding a security lock to the insulating baffle, so that the warning and locking functions are combined into one, and the fingerprint identification module is used to ensure the uniqueness of the unlocking of the baffle and ensure safety measures during the licensing process. It replaces the original "stop, high voltage danger" insulation baffle that requires a person to drill into the switch compartment and tilt the padlock forward, and finally achieves an intelligent and automatic alternative to the insulation baffle.

The technical scheme of the present invention is to provide an on-site safety management method based on biometric identification technology, including placing a warning baffle plate for maintenance work at the warehouse door of the switch cabinet by a licensee before maintenance, and recovering the placed by the original licensee after the maintenance. Overhaul work warning bezel, which is characterized by:

1) Set up an insulating baffle as a warning baffle for maintenance work;

The insulating baffle is placed at the door of the switch cabinet when each switch cabinet of the substation is overhauled, as a safety measure in the whole process of the overhaul work;

2) A fingerprint identification unit, a side arm extending/retracting unit and an alarm unit are arranged on the insulating baffle;

The fingerprint identification unit is used to identify the fingerprint of the licensee, and the side arm extension/retraction unit is used to drive the extension or retraction of the side arm under the control of the fingerprint identification unit;

3) When the licensor is arranging security measures, the licensor enters his own fingerprint into the fingerprint recognition unit of the insulating baffle, and the fingerprint recognition unit recognizes the licensor's fingerprint and stores the recorded fingerprint;

4) Put the insulating baffle in the switch compartment, the licensor presses the "start" button, the side arm extends/retracts the unit to drive the side arm out, presses against the inner wall of the switch compartment, and fixes the insulating baffle on the switch. the door of the cabinet;

5) When the overhaul is over, the licensor needs to re-enter the licensor's fingerprints when the license is over;

6) The fingerprint identification unit of the insulating baffle compares and matches the licensor's fingerprint entered again with the licensor's fingerprint entered at the beginning of the license;

7) If the licensor's fingerprints entered again are consistent with the fingerprints entered at the beginning of the license, the licensor can activate the "close" button of the shutter. At this time, the side arm extension/retraction unit drives the side arm to retract and retract to normal. position, at which point the Licensor may remove the baffle;

8) If the fingerprint of the licensor entered again is inconsistent with the fingerprint of the licensor entered at the beginning of the license, the insulation baffle alarm system will be activated and an alarm sound will be issued to remind the operator to stay away from the insulation baffle.

Specifically, the extending or retracting movement direction of the side arm is parallel to the plane where the plate body of the insulating baffle is located.

Further, the side arms are arranged on at least two sides of the insulating baffle.

The fingerprint identification unit includes at least acquisition of fingerprint images, preprocessing of fingerprint images and matching of characteristic points of fingerprints.

Specifically, the fingerprint identification consists of two processes: establishing a template database and fingerprint identification; establishing a fingerprint template database for storing the licensor fingerprint data entered by the licensor when the licensor first permits; fingerprint identification for completing the fingerprints that need to be compared A match operation with fingerprints already stored in template data.

Further, the fingerprint identification realizes the fingerprint identification of the licensee by completing the fingerprint image acquisition, fingerprint image preprocessing, fingerprint feature point extraction and fingerprint feature point matching in the fingerprint identification process.

When permitting for the first time, when the licensee presses the "open" button to activate the insulating baffle, the side arm extension/retracting unit of the insulating baffle starts, and the drive motor works. Feedback a termination signal to the motor, at this time the motor stops and the baffle is in a permitted state;

When the license is over, when the licensor presses the "close" button of the start shutter, the fingerprint recognition unit outputs a logic "AND" signal. Only when the start motor signal and the fingerprint recognition matching signal are both true, the drive motor rotates. ; otherwise, the drive motor does not work.

The insulating baffle with fingerprint identification module adds the function of adding a security lock to the insulating baffle, and integrates the biometric identification technology, the warning and locking functions of the on-site safety measures during the maintenance of the switch cabinet of the substation.

The fingerprint identification function ensures the uniqueness of unlocking the insulating baffle, and ensures the firmness and reliability of the safety measures in the whole working process.

Compared with the prior art, the advantages of the present invention are:

1. This technical solution uses an insulating baffle with a fingerprint identification module to attach the function of adding a security lock to the insulating baffle, so that the warning and locking functions are combined into one; when the licensor arranges safety measures, as long as Put this baffle in the switch compartment and enter your fingerprint, the insulating baffle "arms" will stretch out against the inner wall of the switch compartment. It not only saves the permissive person's dangerous action of burrowing into the warehouse and tilting the padlock forward, but also effectively isolates the operator from the busbar curtain door; the insulating baffle "arms" will only be closed when the licenser's fingerprint is recognized. If there is a mismatched fingerprint input during the work process, the bezel alarm system will be activated, prompting the operator to stay away from the insulation barrier; therefore, the fingerprint recognition function ensures the uniqueness of unlocking the insulation barrier and ensures the safety measures during the whole process of work. firmness and reliability;

2. The insulating baffle with fingerprint identification module in this technical solution can replace the original “stop, high-voltage danger” insulating baffle that requires the permitting person to drill into the switch compartment and tilt the padlock forward, and finally achieve the purpose of replacing the insulating baffle. Intelligent and automated.

3. The insulating baffle adopts the design method of stroke gear, and the distance between the left, right and upper arms can be adjusted by designing the density of the gears;

4. Only when the fingerprint of the licensee is recognized, the left, right and upper baffle arms of the insulating baffle will shrink. If there is a mismatched fingerprint input during work, the alarm system of the bezel will be activated. , prompting the operator to stay away from the insulating baffle, the fingerprint identification design of this design ensures the uniqueness of the unlocking of the intelligent insulating baffle, and ensures the firmness and reliability of the safety measures during the work process;

5. Limit switch and locked-rotor protection are added to the insulation baffle motor control system, which effectively protects the motor system and the baffle arm. It avoids the situation that the motor is blocked and burned due to mechanical jamming, inconsistent matching between the mechanical arm and the switch, and cannot fill the interior of the switch compartment.

Description of drawings

Fig. 1 is the structural state schematic diagram of the insulating baffle plate before the permission of the present invention begins;

Fig. 2 is the structural state schematic diagram of the insulating baffle plate after the permission of the present invention starts;

Fig. 3 is the working flow schematic diagram of insulating baffle at the beginning of the license of the present invention;

Fig. 4 is the working flow schematic diagram of insulating baffle when the license of the present invention ends;

Fig. 5 is the control system composition schematic diagram of the insulating baffle of the present invention;

6 is a schematic diagram of the fingerprint identification process at the beginning of the license;

7 is a schematic diagram of the fingerprint identification process when the license ends;

FIG. 8 is a schematic diagram of the work flow of the motor control system at the beginning of the license;

FIG. 9 is a schematic diagram of the work flow of the motor control system at the end of the license.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

The technical scheme of the present invention provides an on-site safety management method based on biometric identification technology, which includes placing a warning baffle plate for maintenance work on the warehouse door of the switch cabinet by a licenser before maintenance, and recovering the placed by the original licensee after the maintenance. The invention of the maintenance work warning baffle is as follows:

1) Set up an insulating baffle as a warning baffle for maintenance work;

The insulating baffle is placed at the door of the switch cabinet when each switch cabinet of the substation is overhauled, as a safety measure in the whole process of the overhaul work;

2) A fingerprint identification unit, a side arm extending/retracting unit and an alarm unit are arranged on the insulating baffle;

The fingerprint identification unit is used to identify the fingerprint of the licensee, and the side arm extension/retraction unit is used to drive the extension or retraction of the side arm under the control of the fingerprint identification unit;

3) When the licensor is arranging security measures, the licensor enters his own fingerprint into the fingerprint recognition unit of the insulating baffle, and the fingerprint recognition unit recognizes the licensor's fingerprint and stores the recorded fingerprint;

4) Put the insulating baffle in the switch compartment, the licensor presses the "start" button, the side arm extends/retracts the unit to drive the side arm out, presses against the inner wall of the switch compartment, and fixes the insulating baffle on the switch. the door of the cabinet;

5) When the overhaul is over, the licensor needs to re-enter the licensor's fingerprints when the license is over;

6) The fingerprint identification unit of the insulating baffle compares and matches the licensor's fingerprint entered again with the licensor's fingerprint entered at the beginning of the license;

7) If the licensor's fingerprints entered again are consistent with the fingerprints entered at the beginning of the license, the licensor can activate the "close" button of the shutter. At this time, the side arm extension/retraction unit drives the side arm to retract and retract to normal. position, at which point the Licensor may remove the baffle;

8) If the fingerprint of the licensor entered again is inconsistent with the fingerprint of the licensor entered at the beginning of the license, the insulation baffle alarm system will be activated and an alarm sound will be issued to remind the operator to stay away from the insulation baffle.

Specifically, the structure of the intelligent insulating baffle (referred to as insulating baffle or baffle) based on the biometric identification technology in this technical solution is shown in FIG. 1 and FIG. 2 .

The insulating baffle is provided with side arms (referred to as insulating baffle arms) on at least two sides (three sides are taken as an example in the figure), and the side arms are located between the motor, the push rod and the central gear. Driven, it can be extended or retracted synchronously.

Obviously, each insulating baffle arm is extended or retracted on a plane parallel to the plane where the baffle is located. planes are parallel.

Before the safety permission of the maintenance work starts, the structural state of the insulating baffle is shown in Figure 1. At this time, the side arm of the insulating baffle is in a retracted state, which is small in size and easy to carry. It is also convenient for the licensor to put the insulating baffle into the waiting state inside the switch compartment.

The workflow of the insulating baffle at the start of licensing is shown in Figure 3.

When the licensee starts to license, he first enters his own fingerprint, then presses the "open" button of the bezel, and the starter motor rotates to drive the push rod on the left to move up. When the push rod on the left reaches the position 2 in FIG. 2 from the position in FIG. 1 (ie, position 1 in FIG. 2 ), the push rod pushes the upper wall of the baffle from the retracted position in FIG. 1 to the protruding position in FIG. 2 . At the same time, the stroke gear 1 drives the central gear to rotate, so that the stroke gear 2 and the stroke gear 3 rotate to the left and right sides respectively, so that the left and right arms of the baffle rotate to the left and right sides respectively, reaching the position shown in Figure 2.

The left, right, upper and arms of the extended insulating baffles are against the inner wall of the switch cabinet of the switch cabinet, which can effectively prevent the maintenance personnel or staff in the station from accidentally touching the static and moving contacts that may be charged in the switch cabinet. to the role of insulation isolation.

The working flow chart of the insulating baffle at the end of the permit is shown in Figure 4.

When the licensor's license ends, the licensor needs to re-enter the licensor's fingerprint, and the control system of the intelligent insulating baffle will intelligently match the re-entered licensor's fingerprint with the fingerprint entered at the beginning of the license.

When the licensor's fingerprints entered again are consistent with the fingerprints entered at the beginning of the license, the licensor can activate the "close" button of the shutter. At this time, the side arms on the three sides of the shutter are retracted, returning from the position in Figure 2 to the one shown in Figure 1. When the normal position is shown, the Licensor may remove the bezel at this time.

When the fingerprint of the licensee entered again is inconsistent with the fingerprint entered at the beginning of the license, the alarm system of the intelligent bezel will start, and an alarm sound will be issued to remind the operator to stay away from the insulating shield.

The control system composition of the intelligent insulation baffle is shown in Figure 5. The software design algorithm of the intelligent insulation baffle mainly includes fingerprint recognition and motor control.

(1) The fingerprint identification module is mainly composed of fingerprint image collection, fingerprint image preprocessing, and fingerprint feature point matching. The workflow of the fingerprint identification module is shown in Figure 6 and Figure 7.

The complete fingerprint identification consists of two processes, namely, the establishment of the template database and the fingerprint identification.

The establishment of the fingerprint template database is mainly used to store the licensor's fingerprint data entered by the licensor for the first time, and fingerprint identification is used to complete the template fingerprint (fingerprints that need to be compared) and template fingerprints (fingerprints that have been saved in the template data) matching operation.

However, it is not difficult to find that the above two processing processes actually have the same components. The only difference is that in the process of fingerprint re-identification, there are more matching links of fingerprint feature points. Therefore, as long as the design of fingerprint identification functions such as fingerprint image acquisition, fingerprint image preprocessing, fingerprint feature point extraction and fingerprint feature point matching in the fingerprint identification process is completed, fingerprint identification can be realized.

(2) The working flow chart of the motor control system (referred to as the drive motor or motor) is shown in Figure 8 and Figure 9 .

When the licensor is initially licensed, the licensor first performs fingerprint input (also called entry), and the fingerprint recognition unit records and stores the licensor's fingerprint as a template fingerprint.

When the licensor presses the "open" button of the starter baffle, the drive motor starts to work, and the three side arms extend. When the three side arms of the baffle touch the inner wall of the switch compartment, the feedback is obtained through the set side arm position detection switch. Give the motor a termination signal, at this time the motor stops and the baffle is in the permission state.

When the license ends, the licensor first performs fingerprint entry again, and the fingerprint recognition unit compares and matches the licensor template fingerprint entered again with the licensor template fingerprint entered at the beginning of the license; When the entered licensor's fingerprints are consistent, a logical "AND" signal is output through the fingerprint identification module.

When the licensor presses the "close" button of the start shutter, only when the start motor signal and the fingerprint recognition matching signal are both true, the motor rotates. Otherwise, the motor does not work.

When the motor is working, the three side arms of the baffle are retracted. When the side arms are retracted in place, a "termination" signal is fed back to the motor through the position limit switches of the three side arms, and the motor stops at this time.

The main innovation points of the technical solution of the present invention are as follows:

Innovation point 1: Compared with the original insulating baffle, the intelligent insulating baffle eliminates the dangerous action of the licensee to burrow into the warehouse and tilt the padlock forward, which protects the personal safety of the licensee.

Innovation point 2: The intelligent insulating baffle adopts the design of stroke gears, and the distance between the left, right and upper arms can be adjusted by designing the density of the gears.

Innovation point 3: The smart insulating baffle will shrink the left, right and upper baffle arms of the insulating baffle only when the fingerprint of the licensee is recognized. If there is a mismatched fingerprint input during work, the baffle will alarm The system will start, prompting the operator to stay away from the insulating baffle. This design of fingerprint recognition ensures the uniqueness of unlocking the intelligent insulating baffle, and ensures the firmness and reliability of the safety measures throughout the work.

Innovation point 4: The intelligent insulation baffle motor control system adds limit switch and locked-rotor protection, which effectively protects the motor system and the baffle arm. It avoids the situation that the motor is blocked and burned due to mechanical jamming, inconsistent matching between the mechanical arm and the switch, and cannot fill the interior of the switch compartment.

With the intelligent insulating baffle in this technical solution, when the licensor is arranging security measures, as long as the baffle is placed in the switch compartment and fingerprints are entered, the three arms of the insulating baffle will extend against the inner wall of the switch compartment. It not only saves the dangerous action of the permitting person drilling into the warehouse and tilting the padlock forward, but also effectively isolates the operator from the busbar curtain door. At the same time, the intelligent insulating baffle will only fold the three arms when the fingerprint of the licensee is recognized. If there is a mismatched fingerprint input during the work process, the baffle alarm system will be activated, prompting the operator to stay away from the insulating baffle. Therefore, the fingerprint recognition function ensures the unique unlocking of the insulating bezel.

The technical scheme of the present invention adds the safety isolation function of the security lock to the insulating baffle, and integrates the biometric identification technology, the warning and blocking functions of the on-site safety measures during the maintenance of the switch cabinet of the substation, and ensures the insulating baffle. The uniqueness of unlocking ensures the firmness and reliability of security measures during the whole process of work.

The technical scheme of the present invention can replace the original "stop, high voltage danger" insulating baffle that requires the permitting person to drill into the switch compartment for the dangerous action of the forward padlock, and finally achieve the intelligent and automatic replacement of the insulating baffle.

The invention can be widely used in the field of safety permission work management in the maintenance process of the substation.

Claims (9)

1. A field safety management method based on biological identification technology comprises the steps that a licensor places an overhaul work warning baffle at a bin door of a switch cabinet before overhaul and the original licensor withdraws the placed overhaul work warning baffle after overhaul, and is characterized in that:

1) arranging an insulating baffle plate as a maintenance work warning baffle plate;

the insulating baffle is placed at a bin door of the switch cabinet when each switch cabinet of the transformer substation is overhauled and is used as a safety measure in the whole process of overhauling work;

2) a fingerprint identification unit, a side arm extending/retracting unit and an alarm unit are arranged on the insulating baffle;

the fingerprint identification unit is used for identifying the fingerprint of a licensor, and the side arm extending/retracting unit is used for driving the side arm to extend or retract under the control of the fingerprint identification unit;

3) when a licensor arranges safety measures, recording the fingerprint of the licensor into the fingerprint identification unit of the insulation baffle plate, and identifying the fingerprint of the licensor by the fingerprint identification unit and storing the recorded fingerprint;

4) the insulating baffle is placed in the switch cabin, a licensee presses a 'start' button, the side arm extending/retracting unit drives the side arm to extend out to abut against the inner wall of the switch cabin, and the insulating baffle is fixed at the cabin door of the switch cabinet;

5) after the overhaul is finished, when the licensor finishes licensing, the fingerprint of the licensor needs to be input again;

6) the fingerprint identification unit of the insulating baffle plate compares and matches the licensor fingerprint input again with the licensor fingerprint input when the license starts;

7) if the fingerprint of the licensor recorded again is matched with the fingerprint recorded at the beginning of the license, the licensor can start a closing button of the baffle, the side arm extends out/retracts to drive the side arm to retract to a normal position, and the licensor can detach the baffle;

8) if the licensor fingerprint input again is inconsistent with the licensor fingerprint input when the license begins, the insulating baffle alarm system is started to send an alarm sound to prompt an operator to keep away from the insulating baffle.

2. The method for field safety management based on biometric technology as in claim 1, wherein the extending or retracting movement direction of the side arm is parallel to the plane of the insulating barrier.

3. The method for field safety management based on biometric identification technology according to claim 1 or 2, wherein the side arms are disposed on at least two sides of the insulating barrier.

4. The biometric-based on-site security management method according to claim 1, wherein the fingerprint recognition unit at least comprises the steps of fingerprint image acquisition, fingerprint image preprocessing and fingerprint feature point matching.

5. The biometric-based on-site security management method according to claim 4, wherein the fingerprint recognition is performed by establishing a template database and performing fingerprint recognition;

establishing a fingerprint template database for storing licensor fingerprint data input by a licensor during initial licensing;

fingerprint identification is used to perform matching operations between a fingerprint to be compared and a fingerprint already stored in template data.

6. The biometric-based on-site security management method as set forth in claim 5, wherein the fingerprint recognition is performed by performing fingerprint image acquisition, fingerprint image preprocessing, fingerprint feature point extraction, and fingerprint feature point matching in the fingerprint recognition process.

7. The method for field safety management based on biometric identification technology as claimed in claim 1, wherein when the licensee presses the "open" button for starting the insulation barrier when the first permission is given, the side arm extending/retracting unit of the insulation barrier is started to drive the motor to work, when the side arm touches the inner wall of the switch cabin, a stop signal is fed back to the motor, the motor is stopped and the barrier is in the permission state;

when the licensor presses down a 'close' button of the starting baffle after the licensing is finished, the fingerprint identification unit outputs a logic 'AND' signal at the moment, and the driving motor rotates only when the starting motor signal and the fingerprint identification matching consistent signal are both true; otherwise, the driving motor does not work.

8. The method for field safety management based on biological identification technology as claimed in claim 1, wherein the insulation barrier with fingerprint identification system adds the function of adding security lock to the insulation barrier, and combines the biological identification technology and the warning and locking functions of field safety measures during the overhaul of the substation switch cabinet.

9. The field safety management method based on the biological identification technology as claimed in claim 1, wherein the fingerprint identification function ensures the uniqueness of unlocking of the insulating baffle, and ensures the firmness and reliability of safety measures in the whole working process.

Images