CN114988305A - Early warning method for preventing suspension arm vehicle from electric shock during operation - Google Patents
Early warning method for preventing suspension arm vehicle from electric shock during operation Download PDFInfo
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- CN114988305A CN114988305A CN202210706163.6A CN202210706163A CN114988305A CN 114988305 A CN114988305 A CN 114988305A CN 202210706163 A CN202210706163 A CN 202210706163A CN 114988305 A CN114988305 A CN 114988305A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
- B66C23/90—Devices for indicating or limiting lifting moment
- B66C23/905—Devices for indicating or limiting lifting moment electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses an early warning system for preventing an electric shock during the operation of a boom vehicle, which comprises: the system comprises a high-voltage near-electricity intelligent early warning device, a two-dimensional laser radar and an electric shock prevention early warning monitoring system; the high-voltage near-electricity intelligent early warning device is an intelligent early warning and warning device in a non-contact state when an operation vehicle operates beyond the specified safety range of high-voltage power equipment, and provides near-electricity induction data for an electric shock prevention early warning and monitoring system; the two-dimensional laser radar is used for detecting the distance condition of nearby objects, wherein the electric shock prevention early warning monitoring system is used for receiving data of the high-voltage near-electricity intelligent early warning device and the two-dimensional laser radar, and giving a corresponding warning state after carrying out comprehensive analysis according to relevant settings. When the crane is in an operating state, the crane can monitor the near-electric induction information and the distance information between the crane and surrounding objects, monitor the working environment in multiple dimensions, monitor the working environment of the crane in multiple dimensions and prompt a driver in time, so that electric shock accidents and the inspection times of a power transmission line can be reduced.
Description
Technical Field
The invention relates to crane operation safety early warning under a high-voltage transmission line, in particular to an early warning system which acquires relevant data of a two-dimensional laser radar and a high-voltage near-electricity intelligent early warning device, analyzes the data comprehensively, gives graded warning reminding and relevant information and records the warning.
Background
In recent years, a power supply company in a city level region directly loses millions of yuan due to dozens of cranes and the like every year, and also can cause millions of yuan loss of power customers. In particular, when a power system is constructed, a hoisting operation is inevitably performed under a high-voltage power transmission line. When the crane is lifted, a driver can hardly judge the distance between the crane arm and the cable according to visual inspection, and the crane arm is not stopped in time due to the short distance, so that personal safety and large-scale power failure accidents are caused. With the continuous expansion of power systems, power supply departments strengthen the protection of power lines by increasing the patrol frequency, and at present, an alarm system for judging the distance between a crane arm and a power transmission line according to an electric field induction principle and a wireless communication technology is provided, so that the system avoids potential hazard sources existing in a visual inspection mode to a certain extent. However, the electric field induction principle is easily affected by external factors such as weather, and the single information source cannot guarantee the reliability of the information, and the inspection frequency of the line manager cannot be completely replaced or reduced from the source.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides the early warning method for preventing the electric shock during the operation of the crane jib vehicle, so that the operation warning and the monitoring of the crane jib vehicle can be integrated, the electric shock accident and the inspection frequency of the power transmission line can be reduced, and the safety of the production operation can be ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to an early warning system for preventing an electric shock during the operation of a boom vehicle, which is characterized by comprising the following components: the system comprises a high-voltage near-electricity intelligent early warning device, a two-dimensional laser radar and an electric shock prevention early warning monitoring system;
high pressure nearly electric intelligent early warning device includes: a sending end and a receiving end;
the sending end sets up on the car hopper of crane arm and includes: the device comprises a sensor, a filter circuit, a sampling quantization circuit, a digital processing circuit and a wireless transmitting module, wherein the filter circuit, the sampling quantization circuit, the digital processing circuit and the wireless transmitting module are sequentially electrically connected with the sensor;
the receiving terminal sets up on the crane arm to include: the wireless receiving module, the MPU unit and the alarm are electrically connected in sequence;
the sensor collects an induced voltage signal of a high-voltage line under an overhead line, and the induced voltage signal is processed by the filter circuit, the sampling quantization circuit and the digital processing circuit in sequence to obtain a preprocessed induced voltage signal which is sent to the receiving end through the wireless transmitting module;
the wireless receiving module in the receiving end receives the preprocessed induction voltage signal and transmits the preprocessed induction voltage signal to the MPU unit, so that the MPU unit compares the preprocessed induction voltage signal according to the set voltage early warning threshold value, and if the preset voltage early warning threshold value is exceeded, the wireless receiving module controls the alarm module to give an alarm prompt and sends an early warning signal W to the anti-electric shock early warning monitoring system;
the two-dimensional laser radar is arranged on the car hopper and comprises a radar transmitting unit, a radar receiving unit, a control unit, a light splitting element, a scanning mirror and an optical element; wherein the scanning mirror comprises: a first scanning mirror and a second scanning mirror disposed in a conjugate relationship; the sub-elements include first, second and third optical elements;
the radar transmitting unit transmits laser signals to a surrounding scanning area by using a laser, irradiates the same position of the first scanning mirror from different angles, penetrates through the first optical element and the second optical element from different angles, and then is collimated and converged onto the second scanning mirror, so that the scanning direction of the laser signals is modulated; all incident laser signals are reflected to the scanning area by the second scanning mirror, echo signals of all targets on the scanning area are reflected to a third optical element by the light splitting element, and then the echo signals are converged to a detector in the radar receiving unit through the third optical element; the detector sends the received echo signals to the control unit, so that the control unit processes the echo signals to obtain two-dimensional radar data _ r, and the two-dimensional radar data _ r is sent to the electric shock prevention early warning monitoring system through the network module;
protection against electric shock early warning monitored control system includes: initializing a function module, a normally running function module and an intermittent function module;
the initialization function module reads key configuration data from a configuration file in an initial state, and the method comprises the following steps: m alarm level thresholds
Radar set detection distance d 1 Starting angle a of radar detection angle 1 And an end angle a 2 Wherein L is m Represents the mth alarm level threshold;
the normally running function module defines and initializes N alarm states
Wherein H n Representing the nth alarm state; n represents the type of alarm state;
the normally running functional module is in the current period t 1 And receiving the two-dimensional radar data _ r and the early warning signal W, and identifying overtime positions when the two-dimensional radar data _ r and the early warning signal W are received successfully
The corresponding overtime identification bits in the time-out setting table are all set to be true; wherein, lag j Indicating the jth overtime identification bit; and performing data correction on the two-dimensional radar data _ r by using the formula (1) to obtain corrected two-dimensional radar dataData_r：
Data_r＝data_r×Magnification+offset (1)
In equation (1), the verification represents the set data transmission multiple, and the offset represents the set data offset amount;
the normally running functional module is in the current period t 1 Respectively connecting the corrected Data _ r with M alarm level thresholds
Making comparison to obtain the current period t 1 Radar alarm state W r ：
If Data _ r>L 1 Then let W r ＝0；
If Data _ r<L 1 And Data _ r>L 2 Then let W r ＝1；
If Data _ r<L 2 And Data _ r>L m-1 Then let W r ＝2；
If Data _ r<L m-1 And Data _ r>L m Then let W r ＝m-1；
If Data _ r<L M Then let W r ＝L M ；
The normally running functional module is in the current period t 1 Next, N current alarm states
Comparing the levels to obtain the highest alarm level L in the current period max And outputting;
the normally running functional module is in the current period t 1 N current alarm states
And with
Compare one by one if W n >0 and W n ≠h n Then in the current period t 1 Current alarm state of the nth kind
Storing the data into a database; otherwise, not storing in the database;
the normally running functional module is in the current period t 1 N current alarm states
Sequentially assign to
The intermittent function module is t under the current period 2 According to the overtime judgment zone bit
To judge the overtime state
If the jth flag lag j If true, let the jth timeout state WT j Otherwise, let jth timeout state WT j 1 is ═ 1; finally, the intermittent function module marks the overtime zone bit
The setting is false.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs and develops a crane operation monitoring system from the aim of reducing power failure loss, and the system consists of 3 parts, namely a high-voltage near-electricity intelligent early warning device, a two-dimensional laser radar and an electric shock prevention early warning monitoring system (an upper computer system), which are arranged on a crane arm. When the crane is in an operation state, the distance between the crane arm and the power transmission line can be monitored timely by the two-dimensional laser radar, the near-electricity detection device can monitor voltage information in real time, the reliability of monitoring data sources is greatly improved by multi-dimensional monitoring, the near-electricity detection device is sent to an industrial control upper computer, the upper computer system analyzes data, comprehensive analysis is carried out, classified alarm reminding and related information are given according to classified setting, alarm records are made for reminding a driver, alarm and monitoring can be integrated, electric shock accidents and power transmission line inspection times are further reduced.
Drawings
FIG. 1 is a block diagram of an electric shock early warning system for preventing the boom vehicle from working according to the present invention;
FIG. 2 is a block diagram of the near-electricity intelligent early warning device according to the present invention;
FIG. 3 is a schematic diagram of a two-dimensional radar detection range as described in an example of the present invention;
fig. 4 is a core function diagram of the electric shock prevention early warning monitoring system according to the present invention.
Detailed Description
In this embodiment, as shown in fig. 1, an early warning system for preventing an electric shock during a boom truck operation includes: the system comprises a high-voltage near-electricity intelligent early warning device, a two-dimensional laser radar and an electric shock prevention early warning monitoring system;
high-voltage nearly electric intelligent early warning device includes: a sending terminal and a receiving terminal;
the sending terminal sets up on the car hopper of crane arm and includes: the device comprises a sensor, a filter circuit, a sampling quantization circuit, a digital processing circuit and a wireless transmitting module, wherein the filter circuit, the sampling quantization circuit, the digital processing circuit and the wireless transmitting module are sequentially electrically connected with the sensor;
the receiving end is provided on the crane arm, as shown in fig. 2, and includes: the wireless receiving module, the MPU unit and the alarm are electrically connected in sequence;
the sensor collects an induced voltage signal of a high-voltage line under an overhead line, and the induced voltage signal is processed by a filter circuit, a sampling quantization circuit and a digital processing circuit in sequence to obtain a preprocessed induced voltage signal which is sent to a receiving end through a wireless transmitting module;
a wireless receiving module in a receiving end receives the preprocessed induction voltage signal and transmits the induction voltage signal to an MPU unit, so that the MPU unit compares the preprocessed induction voltage signal according to the set voltage early warning threshold value, and if the preset voltage early warning threshold value is exceeded, an alarm module is controlled to give an alarm prompt and send an early warning signal W to an electric shock prevention early warning monitoring system;
since the transmitting module is generally installed at a position closest to a high-voltage line in a large-scale construction machine, and the closer the receiving device is to a driver and other construction personnel on the site, the better, it is preferable that the transmitting module and the receiving module are connected in a wireless manner. Data are transmitted in a 2.4G wireless mode, the data communication transmission distance can reach more than 200 meters under the barrier-free condition, and the requirement of the field distance can be met. The sending module (transmitting end) and the receiving module (receiving end) can be powered by a local power supply (12V-24V) and a battery.
The working principle is as follows: the intelligent early warning system carries out front-end analysis processing on the received monitoring signal, takes out a 50HZ power frequency signal, eliminates an interference signal through digital filtering, analyzes the signal intensity, sends out a wireless warning signal to a receiving end when a preset value is reached, and the receiving end gives an alarm after receiving the signal to prompt a user device that the user device is close to strong current and please pay attention to danger. The early warning system only warns the voltage of power frequency 50HZ-60HZ above 220V, and the circuit is anti-interference through digital filtering, stable and reliable. Special attention is paid to: the intelligent early warning system does not perform early warning on direct current, high frequency and static electricity, the equipment is mainly used for detecting the early warning system of the operating vehicle constructed under the overhead line, and the detected voltage can be set through a human-computer interface of a receiving end as required.
The two-dimensional laser radar is arranged on the car hopper and comprises a radar transmitting unit, a radar receiving unit, a control unit, a light splitting element, a scanning mirror and an optical element; wherein, the scanning mirror includes: a first scanning mirror and a second scanning mirror disposed in a conjugate relationship; the sub-elements comprise a first optical element, a second optical element and a third optical element;
the radar transmitting unit transmits laser signals to a surrounding scanning area by using a laser, irradiates the same position of the first scanning mirror from different angles, penetrates through the first optical element and the second optical element from different angles, and then is collimated and converged onto the second scanning mirror, so that the scanning direction of the laser signals is modulated; all incident laser signals are reflected to a scanning area by the second scanning mirror, and echo signals of all targets on the scanning area are reflected to the third optical element by the light splitting element, so that the echo signals are converged to a detector in the radar receiving unit through the third optical element; the detector sends the received echo signals to the control unit, so that the control unit processes the echo signals to obtain two-dimensional radar data _ r, and the two-dimensional radar data _ r is sent to the electric shock prevention early warning monitoring system through the network module;
in this example, the laser two-dimensional radar is designed by adopting a Time of Flight (TOF) principle, high-precision distance information is obtained by precision Time measurement in a laser pulse reflection process, two-dimensional scanning of the surrounding environment is completed by matching with rotation of a motor, reliable measurement within a range of 40m can be realized, an angle range is 270 degrees, and the angle range is shown in fig. 3.
Protection against electric shock early warning monitored control system includes: initializing a function module, a normally running function module and an intermittent function module; the work flow is shown in fig. 4:
the initialization function module reads key configuration data from the configuration file in an initial state, and the method comprises the following steps: m alarm level thresholds
Radar set detection distance d 1 Starting angle a of radar detection angle 1 And end angle a 2 Wherein L is m Representing the mth alarm level threshold;
the normally running function module defines and initializes N alarm states
Wherein H n Showing the nth alarm state; n represents the type of alarm state;
the normally running function module is in the current period t 1 Receiving two-dimensional radar data _ r and early warning signal W, and when both are successfully received, identifying overtime position
The corresponding overtime identification bits in the time-out setting table are all set to be true; wherein, lag j Indicating the jth timeout flag bit; and applying equation (1) to the two-dimensional radar data dand ata _ r is subjected to Data correction to obtain corrected two-dimensional radar Data _ r:
Data_r＝data_r×Magnification+offset (1)
in the formula (1), the verification represents the set data transmission multiple, and the offset represents the set data offset;
the frequently-running functional module is in the current period t 1 Respectively connecting the corrected Data _ r with M alarm level thresholds
Comparing to obtain the current period t 1 Radar alarm state W r ：
If Data _ r>L 1 Then let W r ＝0；
If Data _ r<L 1 And Data _ r>L 2 Then let W r ＝1；
If Data _ r<L 2 And Data _ r>L m-1 Then let W r ＝2；
If Data _ r<L m-1 And Data _ r>L m Then let W r ＝m-1；
If Data _ r<L M Then let W r ＝L M ；
Where the larger m is, the larger L m The higher the alarm level represented;
the frequently-running functional module is in the current period t 1 N current alarm states
Comparing the levels to obtain the highest alarm level L in the current period max And outputting;
the frequently-running functional module is in the current period t 1 N current alarm states
And with
Compare one by one if W n >0 and W n ≠h n Then in the current period t 1 Current alarm state of the nth kind
Storing the data into a database; otherwise, not storing in the database;
W n >0 indicates that there is an alarm in the nth current alarm state, and W n ≠h n That is, the current alarm level of the nth alarm state is different from the historical alarm level, so as to avoid repeated storage of a continuous alarm state in the database.
The frequently-running functional module is in the current period t 1 N current alarm states
Sequentially assign to
This assignment operates to update the historical alarm state.
Intermittent function module in current period t 2 According to the overtime judgment zone bit
To determine the timeout state
If lag j If true, let the jth timeout state WT j Otherwise, let the jth timeout state WT j 1 is ═ 1; finally, the intermittent function module marks the overtime zone bit
The setting is false.
Here, the
The flag bit for timeout determination is set to false, which does not indicate that the data is timed out, but a period of time (e.g., 30 seconds) elapses, and if the jth data is received during the period of time, the corresponding lag is set j Is assigned a value of true, and is then based on
To give
And (7) assigning values.
In this example, the system mainly includes: the system comprises a near-electric voltage early warning information and two-dimensional scanning radar early warning information monitoring page, a two-dimensional scanning radar setting page and an alarm history page, and can acquire relevant data of a distance measuring radar system and a voltage early warning system, analyze the data comprehensively, give graded alarm reminding and relevant information and make alarm records.
Specifically, the method comprises the following steps:
and acquiring ranging information of the two-dimensional laser scanning radar through a TCP (transmission control protocol), judging the ranging information according to a set alarm grading threshold, if the ranging information exceeds an alarm reference threshold, displaying and sounding the ranging alarm information of the corresponding grade through an upper computer interface, and bringing the alarm information into an alarm database.
The distance measurement information of the high-voltage near-electricity intelligent early warning device is acquired through a GPIO protocol, the voltage early warning information is displayed and sounded through an interface of an upper computer (equipment for installing the system) to give corresponding voltage warning information, and the warning information is brought into a warning database.
Through two-dimensional scanning radar setting page or leaf, can connect two-dimensional laser radar, open two-dimensional laser radar scanning, set up radar scanning angle, set up operations such as distance warning grouping threshold value.
Historical alarm information can be viewed in pages through a historical viewing interface.
The functions of acquiring relevant data of a distance measuring radar system and a voltage early warning system, analyzing the data, comprehensively analyzing, giving graded warning reminding and relevant information, and performing warning record and the like are comprehensively realized. The operating state of the electric shock prevention early warning system can be clear at a glance by an operator through the system.
Claims (1)
1. The utility model provides a prevent early warning system that davit car operation electrocuted which the characterized in that includes: the system comprises a high-voltage near-electricity intelligent early warning device, a two-dimensional laser radar and an electric shock prevention early warning monitoring system;
high pressure nearly electric intelligent early warning device includes: a sending terminal and a receiving terminal;
the sending end sets up on the car hopper of crane arm and includes: the device comprises a sensor, a filter circuit, a sampling quantization circuit, a digital processing circuit and a wireless transmitting module, wherein the filter circuit, the sampling quantization circuit, the digital processing circuit and the wireless transmitting module are sequentially electrically connected with the sensor;
the receiving terminal sets up on the crane arm to include: the wireless receiving module, the MPU unit and the alarm are electrically connected in sequence;
the sensor collects an induced voltage signal of a high-voltage line under an overhead line, and the induced voltage signal is processed by the filter circuit, the sampling quantization circuit and the digital processing circuit in sequence to obtain a preprocessed induced voltage signal which is sent to the receiving end through the wireless transmitting module;
the wireless receiving module in the receiving end receives the preprocessed induction voltage signal and transmits the preprocessed induction voltage signal to the MPU unit, so that the MPU unit compares the preprocessed induction voltage signal according to the set voltage early warning threshold value, and if the preset voltage early warning threshold value is exceeded, the wireless receiving module controls the alarm module to give an alarm prompt and sends an early warning signal W to the anti-electric shock early warning monitoring system;
the two-dimensional laser radar is arranged on the car hopper and comprises a radar transmitting unit, a radar receiving unit, a control unit, a light splitting element, a scanning mirror and an optical element; wherein the scanning mirror comprises: a first scanning mirror and a second scanning mirror disposed in a conjugate relationship; the sub-elements comprise a first, a second and a third optical element;
the radar transmitting unit transmits laser signals to a surrounding scanning area by using a laser, irradiates the same position of the first scanning mirror from different angles, penetrates through the first optical element and the second optical element from different angles, and then is collimated and converged onto the second scanning mirror, so that the scanning direction of the laser signals is modulated; all incident laser signals are reflected to the scanning area by the second scanning mirror, echo signals of all targets on the scanning area are reflected to a third optical element by the light splitting element, and then the echo signals are converged to a detector in the radar receiving unit through the third optical element; the detector sends the received echo signal to the control unit, so that the control unit processes the echo signal to obtain two-dimensional radar data _ r, and the two-dimensional radar data _ r is sent to the electric shock prevention early warning monitoring system through the network module;
protection against electric shock early warning monitored control system includes: initializing a function module, a normally running function module and an intermittent function module;
the initialization function module reads key configuration data from a configuration file in an initial state, and the method comprises the following steps: m alarm level thresholds
Radar set detection distance d 1 Starting angle a of radar detection angle 1 And an end angle a 2 Wherein L is m Represents the mth alarm level threshold;
the normally running functional module defines and initializes N alarm states
Wherein H n Representing the nth alarm state; n represents the type of alarm state;
the normally running functional module is in the current period t 1 And receiving the two-dimensional radar data _ r and the early warning signal W, and identifying overtime positions when the two-dimensional radar data _ r and the early warning signal W are received successfully
The corresponding overtime identification bits in the time-out setting table are all set to be true; wherein, lag j Indicating the jth overtime identification bit; and performing the two-dimensional radar data _ r by using the formula (1)And (3) Data correction to obtain corrected two-dimensional radar Data _ r:
Data_r＝data_r×Magnification+offset (1)
in the formula (1), the verification represents the set data transmission multiple, and the offset represents the set data offset;
the normally running functional module is in the current period t 1 Respectively connecting the corrected Data _ r with M alarm level thresholds
Making comparison to obtain the current period t 1 Radar alarm state W r ：
If Data _ r > L 1 Then let W r ＝0；
If Data _ r < L 1 And Data _ r > L 2 Then let W r ＝1；
If Data _ r < L 2 And Data _ r > L m-1 Then let W r ＝2；
If Data _ r < L m-1 And Data _ r > L m Then let W r ＝m-1；
.
.
.
If Data _ r < L M Then let W r ＝L M ；
The normally running functional module is in the current period t 1 N current alarm states
Comparing the levels to obtain the highest alarm level L in the current period max And outputting;
the normally running functional module is in the current period t 1 N current alarm states
And
compare one by one if W n > 0 and W n ≠h n Then in the current period t 1 Current alarm state of the nth kind
Storing the data into a database; otherwise, not storing in the database;
the normally running functional module is in the current period t 1 N current alarm states
Sequentially assign to
The intermittent function module is t under the current period 2 According to the overtime judgment zone bit
To judge the overtime state
If the jth flag lag j If true, let the jth timeout state WT j Otherwise, let the jth timeout state WT j 1 is ═ 1; finally, the intermittent function module marks the overtime zone bit
The setting is false.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115215240A (en) * | 2022-09-19 | 2022-10-21 | 广东威恒输变电工程有限公司 | Multi-sensing-data-fusion crane electric shock prevention early warning system and method |
| CN115512515A (en) * | 2022-09-30 | 2022-12-23 | 中国南方电网有限责任公司超高压输电公司大理局 | Electric shock prevention operation early warning device |
| CN118405610A (en) * | 2024-07-02 | 2024-07-30 | 浙江强芯电子科技有限公司 | Working vehicle safety early warning system for overhead line construction |
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- 2022-06-21 CN CN202210706163.6A patent/CN114988305A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115215240A (en) * | 2022-09-19 | 2022-10-21 | 广东威恒输变电工程有限公司 | Multi-sensing-data-fusion crane electric shock prevention early warning system and method |
| CN115215240B (en) * | 2022-09-19 | 2023-01-20 | 广东威恒输变电工程有限公司 | Multi-sensing-data-fusion crane electric shock prevention early warning system and method |
| CN115512515A (en) * | 2022-09-30 | 2022-12-23 | 中国南方电网有限责任公司超高压输电公司大理局 | Electric shock prevention operation early warning device |
| CN115512515B (en) * | 2022-09-30 | 2024-04-09 | 中国南方电网有限责任公司超高压输电公司大理局 | Electric shock prevention operation early warning device |
| CN118405610A (en) * | 2024-07-02 | 2024-07-30 | 浙江强芯电子科技有限公司 | Working vehicle safety early warning system for overhead line construction |
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