CN112950871A - Electric power high-voltage line safety early warning device and early warning method - Google Patents
Electric power high-voltage line safety early warning device and early warning method Download PDFInfo
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- CN112950871A CN112950871A CN202110172276.8A CN202110172276A CN112950871A CN 112950871 A CN112950871 A CN 112950871A CN 202110172276 A CN202110172276 A CN 202110172276A CN 112950871 A CN112950871 A CN 112950871A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0266—System arrangements wherein the object is to detect the exact distance between parent and child or surveyor and item
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- Child & Adolescent Psychology (AREA)
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Abstract
A safety early warning device and an early warning method for an electric power high-voltage line belong to the technical field of electric power alarming. The invention solves the problem that the prior art lacks effective high-voltage wire safety protection equipment. The laser ranging device comprises a shell, and a motor scanning unit, a laser ranging sensor, a main control board, a storage battery and an audible and visual alarm which are arranged in the shell, wherein the shell is fixedly arranged on a telegraph pole, the motor scanning unit comprises a motor and a motor driver for controlling the motor to rotate in a reciprocating manner along the horizontal direction, the laser ranging sensor is fixedly arranged on an output shaft of the motor, and the motor driver, the laser ranging sensor, the audible and visual alarm and the storage battery are respectively and electrically connected with the main control board. Within a certain area range which can be arranged below the high-voltage wire in the horizontal direction, sound and light alarm can be actively sent out as long as a target object appears. The early warning can be provided for the moving target entering the high-pressure dangerous area by mistake. Ensuring personal safety and normal operation of high-voltage lines. The safety accident rate of high-voltage electric shock is reduced.
Description
Technical Field
The invention relates to a safety early warning device and an early warning method for an electric power high-voltage line, and belongs to the technical field of electric power alarming.
Background
The outdoor electric high-voltage wire is arranged on an iron tower or a telegraph pole, when a human body or an object approaches a high-voltage wire, the high voltage can possibly puncture the air between the human body or the object and the human body or the object, the high voltage can discharge through the human body, and the high-voltage electric arc is electrically shocked when current passes through the human body, so that electric burn and even death are caused; causing a power interruption. In order to prevent human bodies from touching or approaching high-voltage wires and prevent vehicles or other objects from colliding or approaching charged bodies to cause danger, the electric safety work regulations give the safety distances between personnel and electrified alternating-current lines under different voltage levels.
In order to prevent high-voltage electric arc electric shock, a method adopted at present is that a power signboard is used for reminding nearby a high-voltage line, and because the coverage range of the power signboard is limited, particularly, drivers of construction machinery and engineering vehicles cannot estimate the height of a power line, safety accidents often occur. Some areas use high-voltage line patrol robot, unmanned aerial vehicle to patrol the safety of high-voltage line, because the high-voltage line distributes extensively, and the response time of patrolling is long, and is very little to the reduction influence of incident, through abundant investigation, lacks effectual high-voltage line safety precaution means at present. Therefore, on the premise of meeting the high-voltage safety distance, the safety early warning device for the electric high-voltage line is very necessary to be installed under the high-voltage line on the tower.
Disclosure of Invention
The invention provides a safety early warning device and an early warning method for an electric power high-voltage wire, aiming at solving the problem that effective high-voltage wire safety protection equipment is lacked in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an electric power high-voltage line safety precaution device, it includes the casing and installs motor scanning unit, laser range finding sensor, main control board, battery and audible-visual annunciator in the casing, wherein the casing is adorned admittedly on the wire pole, motor scanning unit includes motor and the motor drive of control motor along the reciprocal rotation of horizontal direction, laser range finding sensor is adorned admittedly on the output shaft of motor, motor drive, laser range finding sensor, audible-visual annunciator and battery are connected with main control board electricity respectively.
Further, a motor position sensor is installed on the shell and electrically connected with the main control board.
Further, an embedded processor and a human-computer interface are arranged on the main control board, and the storage battery is electrically connected to the motor scanning unit, the laser ranging sensor, the audible and visual alarm, the embedded processor and the human-computer interface respectively.
Further, a solar cell panel is installed on the shell and electrically connected with the storage battery.
Furthermore, a distance measuring window is formed in the shell, and the distance measuring window and the laser distance measuring sensor are arranged in a right-facing mode in the horizontal direction.
Further, the shell is fixedly arranged on the telegraph pole through an anchor ear.
A safety early warning method for an electric high-voltage line comprises the following steps:
firstly, setting a monitoring area as a rectangle: setting a motor rotation angle alpha to be 180 degrees, setting the length of a rectangular monitoring area to be a and the width to be b through a main control board, and automatically calculating a threshold value according to the motor rotation angle:
when the absolute value of the angle alpha is equal to arctan (b/2a), the corresponding distance threshold value is a/cos alpha;
when the absolute value of the angle alpha is larger than arctan (b/2a), the corresponding distance threshold value is b/2sin alpha;
secondly, determining a single-point distance coefficient and monitoring response time: the motor chooses for use mechanical angle to be 1.8 degrees two-phase step motor, the step motor driver of 100 subdivisions is chosen for use to the motor driver, and 1 pulse signal is sent out to embedded treater in the main control board, and the motor is rotatory 1.8 degrees/100 be 0.018 degrees, and the motor is every rotatory 0.018 degrees just once to distance detection, and embedded treater is 10000 times to laser range sensor's collection coefficient, and the single-point measuring frequency who chooses laser range sensor is 5KHZ, and single-point distance coefficient is 800: 1, finally enabling the time of scanning the laser ranging sensor once in a set rectangular monitoring area to be 2 seconds, and further determining the monitoring response time to be 2 seconds;
and finally, starting the motor and the laser ranging sensor for collection, starting the rotation of an output shaft of the motor, taking the position as an angle reference point of the whole device when the motor position sensor is triggered to act, judging that an object enters a monitoring area when the distance collected when the motor rotates to a certain angle is smaller than a set distance threshold value, feeding the collected data back to the main control board by the laser ranging sensor, outputting the data to the main control board for analysis and operation, and finally sending the data to the audible and visual alarm to send an alarm signal so as to realize an early warning effect.
Compared with the prior art, the invention has the following effects:
the optical non-contact measurement is adopted, the early warning of a target which possibly threatens high-voltage safety can be carried out in advance outside the safe distance, and in a certain area range which can be set in the lower part of a high-voltage wire in the relative horizontal direction, the acousto-optic alarm is actively sent out as long as a target object appears. The early warning can be provided for the moving target entering the high-pressure dangerous area by mistake. Ensuring personal safety and normal operation of high-voltage lines. The safety accident rate of high-voltage electric shock is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an early warning device;
FIG. 2 is a block diagram of the early warning device;
fig. 3 is a schematic view of the location of the early warning device mounted on a utility pole (housing not shown);
FIG. 4 is a light path diagram of a laser ranging sensor;
FIG. 5 is a schematic view of a rectangular monitoring area;
fig. 6 is a schematic diagram of a corresponding distance threshold when the absolute value of the angle α < ═ arctan (b/2 a);
fig. 7 is a schematic diagram of the corresponding distance threshold when the absolute value of the angle α > arctan (b/2 a).
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and an electric high-voltage line safety early warning device includes a housing 1, and a motor scanning unit 2, a laser distance measuring sensor 3, a main control board 4, a storage battery 5 and an audible and visual alarm 6 which are installed in the housing 1, wherein the housing 1 is fixedly installed on a telegraph pole 7, the motor scanning unit 2 includes a motor 21 and a motor driver 22 for controlling the motor 21 to rotate in a reciprocating manner along a horizontal direction, the laser distance measuring sensor 3 is fixedly installed on an output shaft of the motor 21, and the motor driver 22, the laser distance measuring sensor 3, the audible and visual alarm 6 and the storage battery 5 are respectively electrically connected with the main control board 4. The laser ranging sensor 3 is driven to rotate through the motor 21, the reciprocating rotation angle of the motor 21 in the high-voltage wire routing direction is controlled through the main control board 4, distance alarm thresholds of the motor 21 at different angles and the rotation speed of the motor 21 can be set, multiple groups of rotation angles and corresponding distance thresholds are set for the motor 21, and all points are connected to form a monitoring area. In the monitoring area, as long as a target object appears (the collected distance is smaller than a set distance threshold value, an object enters the monitoring area), the laser ranging sensor 3 feeds back the collected data to the main control board 4, outputs the data to the main control board 4 for analysis and operation, and finally sends the data to the audible and visual alarm 6 to send out an alarm signal so as to achieve an early warning effect.
The laser distance measuring sensor 3 only measures the distance from the sensor to a target point, the laser distance measuring sensor 3 is fixed on the shaft of the motor scanning unit 2, and the distance of the target can be measured in a range on one surface along with the rotation of the motor 21.
The monitoring area can be set to be rectangular or any other shape, and the specific shape is determined according to the geographical environment below the high-voltage wire. For example, due to the geographical location and the like, if there is a building in the preset rectangular area, the main control board 4 may perform distance measurement on the environment around the monitoring range in a learning manner, and regarding the detection distance as the threshold value at the angle when the detection distance is smaller than the threshold value calculated in the preset rectangular area. Or setting distance threshold values under different angles through the main control board 4, connecting the set points to fit a graph, and calculating the distance threshold values under all angles by using an interpolation algorithm.
The laser ranging sensor 3 is based on a tof (time of flight) principle, that is, a time of flight principle, and specifically, the sensor periodically emits a semiconductor laser modulated light wave to a preset distance range from a semiconductor laser 31, the modulated light is emitted through an emitting optical lens 32, then is reflected by being collided with a target object in a diffuse manner, is imaged on an optical detector 34 through a receiving optical lens 33, the round-trip phase difference of the modulated light is measured, the time of flight is obtained, and the distance between the sensor and the target object is calculated, that is, the output of the laser ranging sensor 3.
A motor position sensor 8 is installed on the shell 1, and the motor position sensor 8 is electrically connected with the main control board 4. The motor position sensor 8 may be a proximity switch or a position switch, etc. The control of the rotation angle of the motor 21 is realized by the motor position sensor 8. After the motor 21 rotates, a position where the motor position sensor 8 starts to operate is used as a reference point of an initial position or a position of the motor 21, and a two-dimensional graph in which a set angle and a set distance of the motor position sensor 8 are fitted to a point formed on a horizontal plane is used as a monitoring area.
The main control board 4 is provided with an embedded processor and a human-computer interface, and the storage battery 5 is electrically connected to the motor scanning unit 2, the laser ranging sensor 3, the audible and visual alarm 6, the embedded processor and the human-computer interface respectively. Through setting up human-computer interface, be convenient for realize setting for the rotation angle and the speed of motor 21, embedded processor sends the reciprocal rotation angle of signal control motor 21 in the high-voltage line direction of walking, and motor 21 drives laser rangefinder sensor 3 and rotates.
The shell 1 is provided with a solar cell panel 9, and the solar cell panel 9 is electrically connected with the storage battery 5. The solar cell panel 9 supplies power to the storage battery 5, and therefore continuous power supply of the whole early warning device is achieved.
The shell 1 is provided with a distance measuring window 11, and the distance measuring window 11 and the laser distance measuring sensor 3 are arranged in a right-facing mode in the horizontal direction. The laser distance measuring sensor 3 measures the distance to the target object present in the monitoring range through the distance measuring window 11.
The housing 1 is fixedly mounted on the utility pole 7 through an anchor ear 10.
A safety early warning method for an electric high-voltage line comprises the following steps:
firstly, setting a monitoring area as a rectangle: setting the rotation angle alpha of the motor 21 to be 180 degrees, setting the length of the rectangular monitoring area to be a and the width to be b through the main control board 4, and automatically calculating a threshold value according to the rotation angle of the motor 21:
when the absolute value of the angle α < ═ arctan (b/2a) (see the shaded portion in fig. 5), the corresponding distance threshold is a/cos α (see the right triangle ABC in fig. 6, co α ═ AC/AB ═ a/AB, and AB ═ a/cos α);
when the absolute value of the angle α is > arctan (b/2a) (see the blank part of fig. 5), the corresponding distance threshold is b/2sin α (see the right triangle ACB in fig. 7, sin α ═ AC/AB ═ 1/2b)/AB ═ b/2sin α);
secondly, determining a single-point distance coefficient and monitoring response time: motor 21 chooses for use mechanical angle to be 1.8 degrees two-phase step motor, motor driver 22 chooses for use 100 stepper motor drivers that subdivide, 1 pulse signal is sent out to embedded treater in the main control board 4, motor 21 rotatory 1.8 degree/100 is 0.018 degree, the motor is every rotatory 0.018 degree just once to distance detection, (10000 pulse signal are sent out to embedded processing unit promptly, motor 21 is rotatory 180 degrees), embedded treater is 10000 times to laser range sensor 3's collection coefficient, the single-point measuring frequency of selecting laser range sensor 3 is 5KHZ, single-point distance coefficient (the optical resolution who detects promptly) is 800: 1 (in order to enable a target with optical resolution, namely a distance coefficient of 800: 1, to be detected each time, the angle of each rotation of the motor 21 is selected to be 0.018 degrees, the distance of the laser ranging sensor 3 is acquired every 0.018 degrees, and calculation can meet the requirement that the target with the distance of 800: 1 cannot be missed in the rotation process of the motor 21), and finally the time for scanning the laser ranging sensor 3 once in a set rectangular monitoring area is 2 seconds, so that the monitoring response time is determined to be 2 seconds; the maximum distance measured by the laser ranging sensor 3 is 40m, and the measurement accuracy is 1%. Namely, the maximum monitoring distance is 40m, and at 40m, the minimum monitoring target diameter is 5 cm.
And finally, starting the motor 21 and the laser ranging sensor 3 for collection, enabling an output shaft of the motor 21 to rotate, taking the position as an angle reference point of the whole device when the motor position sensor 8 is triggered to act, judging that an object enters a monitoring area when the collected distance when the motor 21 rotates to a certain angle is smaller than a set distance threshold value, feeding the collected data back to the main control board 4 by the laser ranging sensor 3, outputting the data to the main control board 4 for analysis and operation, and finally sending the data to the audible and visual alarm 6 to send an alarm signal so as to achieve an early warning effect.
Claims (7)
1. The utility model provides an electric power high-voltage line safety precaution device which characterized in that: the multifunctional electric wire pole comprises a shell (1), and a motor scanning unit (2), a laser ranging sensor (3), a main control board (4), a storage battery (5) and an audible and visual alarm (6) which are installed in the shell (1), wherein the shell (1) is fixedly installed on the electric wire pole (7), the motor scanning unit (2) comprises a motor (21) and a motor driver (22) for controlling the motor (21) to rotate in a reciprocating mode along the horizontal direction, the laser ranging sensor (3) is fixedly installed on an output shaft of the motor (21), and the motor driver (22), the laser ranging sensor (3), the audible and visual alarm (6) and the storage battery (5) are respectively and electrically connected with the main control board (4).
2. The electric high-voltage line safety early warning device according to claim 1, characterized in that: install motor position sensor (8) on casing (1), just motor position sensor (8) are connected with main control board (4) electricity.
3. The electric high-voltage line safety early warning device according to claim 1, characterized in that: the main control board (4) is provided with an embedded processor and a human-computer interface, and the storage battery (5) is electrically connected to the motor scanning unit (2), the laser ranging sensor (3), the audible and visual alarm (6), the embedded processor and the human-computer interface respectively.
4. The electric high-voltage line safety early warning device according to claim 1, characterized in that: a solar cell panel (9) is installed on the shell (1), and the solar cell panel (9) is electrically connected with the storage battery (5).
5. The electric high-voltage line safety early warning device according to claim 1, characterized in that: the range finding window (11) is formed in the shell (1), and the range finding window (11) and the laser range finding sensor (3) are arranged in the horizontal direction in a right-to-right mode.
6. The electric high-voltage line safety early warning device according to claim 1, characterized in that: the shell (1) is fixedly arranged on the telegraph pole (7) through an anchor ear (10).
7. An early warning method using the electric high-voltage line safety early warning device as claimed in any one of claims 1 to 6, wherein: it comprises the following steps:
firstly, setting a monitoring area as a rectangle: setting the rotation angle alpha of the motor (21) to be 180 degrees, setting the length of the rectangular monitoring area to be a and the width to be b through the main control board (4), and automatically calculating a threshold value according to the rotation angle of the motor (21):
when the absolute value of the angle alpha is equal to arctan (b/2a), the corresponding distance threshold value is a/cos alpha;
when the absolute value of the angle alpha is larger than arctan (b/2a), the corresponding distance threshold value is b/2sin alpha;
secondly, determining a single-point distance coefficient and monitoring response time: motor (21) select for use two-phase step motor that mechanical angle is 1.8 degrees, step motor driver that 100 subdivides is selected for use in motor driver (22), 1 pulse signal is sent out to embedded treater in main control panel (4), motor (21) rotatory 1.8 degree/100 ═ 0.018 degree, the motor is every rotatory 0.018 degree just once to the distance detection, embedded treater is 10000 times to the collection coefficient of laser rangefinder sensor (3), the single-point measuring frequency who selects laser rangefinder sensor (3) is 5KHZ, single-point distance coefficient is 800: 1, finally enabling the laser ranging sensor (3) to scan once in a set rectangular monitoring area for 2 seconds, and further determining the monitoring response time to be 2 seconds;
and finally, starting the motor (21) and the laser ranging sensor (3) for collection, enabling an output shaft of the motor (21) to rotate, taking the position as an angle reference point of the whole device when the motor position sensor (8) is triggered to act, judging that an object enters a monitoring area when the distance collected when the motor (21) rotates to a certain angle is smaller than a set distance threshold value, feeding the collected data back to the main control board (4) by the laser ranging sensor (3), outputting the data to the main control board (4) for analysis and operation, and finally sending an alarm signal to the audible and visual alarm (6) to achieve an early warning effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110172276.8A CN112950871A (en) | 2021-02-08 | 2021-02-08 | Electric power high-voltage line safety early warning device and early warning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110172276.8A CN112950871A (en) | 2021-02-08 | 2021-02-08 | Electric power high-voltage line safety early warning device and early warning method |
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| Publication Number | Publication Date |
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| CN112950871A true CN112950871A (en) | 2021-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110172276.8A Pending CN112950871A (en) | 2021-02-08 | 2021-02-08 | Electric power high-voltage line safety early warning device and early warning method |
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| CN (1) | CN112950871A (en) |
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- 2021-02-08 CN CN202110172276.8A patent/CN112950871A/en active Pending
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