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Posted by phyngineer | Yesterday @ 10:25 PM | 66 Views
Estimation of the number of trees and their canopy coverage in forest nursery fields is of great significance for the management of forest nursery. The calculation of the number of tree plants and their canopy coverage by conventional techniques is laborious and time consuming. It is of great practical significance to explore a new technology that is fast, efficient, low-cost and accurate.

In recent years, the remote sensing technology of UAV has developed rapidly. The application research results have been achieved in land remediation, land use planning, fine detection of mine geological disasters, investigation and evaluation of mountain flood disasters, calculation of building density and floor area ratio. However, in these applications, the drones used are mostly expensive aerial survey drones, and the data processing is complicated.
1 Experimental area and data

Figure 1 corrected drone image

The experimental area is two ginkgo forests in the Yudu District of Chengdu. The experimental area is flat. The data used is the image obtained by the DJI PHANTOM2 VISION+ drone. The image is a fisheye image, and the fisheye lens is corrected and geometrically corrected for the fisheye image. The corrected image is shown in Figure 1.

As can be seen from Figure 1, the image was taken in the fall and the ginkgo leaves were golden yellow. There are 3 ginkgo nursery fields in the image, and 2 of them are selected as test plots.

2 methods and steps

2.1 Constructing the...Continue Reading
Posted by phyngineer | Nov 19, 2019 @ 02:22 AM | 567 Views
A large surveying and mapping drone attracted many people's attention. “This is not an ordinary drone. It is equipped with advanced sensors that can transmit data to the command hall in real-time through wireless image transmission and video cloud services. One end collects data and the other end connects experts and decision-makers. They can be judged in an immersive way."

MMC UAV unmanned experts told reporters that their enterprises processed and analyzed the data collected by the drone through the self-developed drone intelligent processing system, and finally realized the application of data results. At present, the technology has been widely used in the fields of natural resource intelligence monitoring and supervision, eco-environmental protection, and emergency management.

Experts told reporters that drones are a powerful tool for data acquisition. They have obvious advantages in data acquisition, and the data detected by drones can be applied and converted into services, and their value will be infinitely magnified. For example, she said that when agricultural insurance was damaged, it was always taken by people to take damage measuring instruments to the disaster-stricken areas. However, in many cases, people could not enter the affected areas, and eventually, the farmers could report the damages themselves. The data is difficult to be objective. Many insurance companies now prefer to use drones to obtain more accurate survey data.

As an effective tool for obtaining big data, drones can also give a very "effective" reference in many macro-controls of government departments. He Ying told reporters that in the future, big data will be completed by the most advanced collection tools and artificial intelligence. As a mature technology and stable performance tool, the UAV is more intelligent and efficient, so the data acquisition capability of the UAV platform. Will continue to highlight. Mapping UAVs attracts a lot of attention.

MMC:http://www.mmcuav.com/

Drone:http://www.mmcuav.com/drones/

Payloads:http://www.mmcuav.com/payloads/

Accessories:http://www.mmcuav.com/accessories/

GCS:http://www.mmcuav.com/gcs/
Posted by phyngineer | Nov 18, 2019 @ 05:45 AM | 2,228 Views
Drone mapping

With its advantages of fast, efficient, flexible and low cost, UAV tilt photography technology is slowly subverting the traditional surveying and mapping operation mode. It has become the “new darling” of the surveying and mapping industry. Applying tilt photography technology to drones is actually doing A three-dimensional model, and the model built is more realistic, more intuitive, and more realistic.

Stack measurement

At present, the measurement of the pile body mainly relies on the total station instrument, the disk coal meter, the GPS and other measuring instruments to measure the pile body. Compared with the measurement of the tape measure which is completely dependent on the manual use earlier, these measurement methods have made great progress. However, today there are more efficient and accurate measurement methods: using drone mapping and modeling.

The drone can preset the route, collect data in the automatic work area above the work area, and after importing the data, it can be imported into the system, generate the point cloud and 3D model data with one click, and measure the spatial distance and volume according to this, or carry out the slope The analog measurement of irregular stack area provides accurate numerical reference for engineering construction planning and production operations.

Tunnel, pipeline inspection

The traditional subway, railway and automobile tunnel inspection requires the inspectors to go inside the tunnel...Continue Reading
Posted by phyngineer | Nov 15, 2019 @ 04:14 AM | 1,816 Views
Recently, Guangdong Power Grid Corporation Foshan Sanshui Power Supply Bureau completed the automatic cruise refinement inspection of all 10 kV overhead lines of Nanshan Power Supply Station and has applied refined routes to carry out daily inspections of “double-light” drones. Nanshan Power Supply Co., Ltd. became the first power supply company of Guangdong Power Grid Corporation to take the lead in realizing the full coverage of multi-sensor automatic cruise. At the same time, it also marks that the UAV has taken a new step in the application level of the distribution network and the level of refined inspection of the equipment.

Using the refined route to carry out "double light" drone automatic cruise

At the beginning of this year, the Guangdong Power Grid Company's aircraft patrol center selected Foshan Sanshui Power Supply Bureau as one of the pilot units for the patrol demonstration application of the drone. The bureau adopted the strategy of “first pilot, post-standardization, re-copy, and promotion”, and first selected Nanshan Power Supply as a pilot. The power supply area of ​​Nanshan Power Supply Station is 133 square kilometers, and there are 26 10 kilovolt lines in the power supply area. The total length of the line is 284.97 kilometers. The terrain and geology of the area are complex, the gully is vertical and horizontal, and the forest coverage rate is as high as 59%, which is a typical representative.

"Wangshan runs dead...Continue Reading
Posted by phyngineer | Nov 13, 2019 @ 02:26 AM | 1,683 Views
Nowadays, with the rapid development of China's social economy, the stability and safety requirements for the operation of power systems have been greatly improved, and various types of surveying and mapping drones have been applied to China's power systems, such as vertical take-off and landing fixed-wing drones, multi-rotors UAVs, fixed-wing UAVs, etc., such mapping UAV products can effectively improve the quality of line inspection work and improve the efficiency of line inspection work.

Due to China's vast territory, complex terrain, hilly and mountainous areas, and relatively meteorological conditions, the conventional means can not meet the requirements of fast and efficient from the initial planning and construction of power grid construction to the daily inspection and maintenance after completion. . The surveying and mapping drone has the characteristics of high efficiency, flexibility, rapid response, low cost, etc. It has wide applications in the early stage of power survey, transmission line planning and design, construction and construction, and post-operation and maintenance, inspection and other aspects.

1. Grid engineering topographic map mapping

The fixed-wing UAV can be used to measure the topography of the power grid project. It can provide detailed data such as images and elevations for the power grid topographic map design as a guarantee to minimize the possibility of errors in the topographic map drawing process and improve the topographic map....Continue Reading
Posted by phyngineer | Nov 12, 2019 @ 02:41 AM | 777 Views
On November 3, the power transmission and maintenance personnel of China's Shandong Yantai Power Supply Company used drones to conduct drone inspections on the entire line of 220 kV bamboo line. This is the 24th and 220 thousand inspections of drones this year. Volt line. Up to now, Yantai Power Supply Company has completed the inspection of the 1817 tower drone and found 161 common defects and 38 pin-level defects. The inspection efficiency and equipment defect detection rate of transmission lines have been greatly improved.
 
This year, Yantai Power Supply Company actively promoted the transformation of transmission line inspection from "man-made inspection" to "personal inspection + machine inspection", focusing on the development of drone pilots, equipment upgrades, and exploration of new modes of inspection. Force, 16 people have the Civil Aviation Authority multi-rotor UAV visibility in the line of sight, equipped with 34 types of multi-rotor drones, has formed a multi-rotor patrol tower, fixed-wing patrol channel models Inspection mode, drone inspection work has a qualitative leap in terms of personnel quality and equipment quality.


 
At present, Yantai Power Supply Company has set up an unmanned aerial vehicle inspection team in each transmission and transportation maintenance team to use the drones for daily patrols, special inspections and fault patrols of the squad. At the same time, a professional inspection team was set up to...Continue Reading
Posted by phyngineer | Nov 11, 2019 @ 01:34 AM | 924 Views
In recent years, the use of drones for terminal distribution has always been a major trend in the development of the industry. Many countries and enterprises are focusing on the development and application of drones in this field. Just last month, Google Brothers Wing announced that its drone delivery business was officially launched in the United States, which not only marked the opening of the U.S. drone transport commercialization era, but also meant that after that, the US part Some residents of the area will enjoy the trendy service of drones for takeaway.

According to news released by Wing, it will mainly open drone distribution services for non-prescription drugs, snacks and health products to residents living in Fort Cristian, Virginia. At that time, the user only needs to use the mobile phone to place an order, and the delivery staff will wrap the goods and hang them on the hooks released by the drone. After the fixing is completed, no one will automatically fly to the destination and hover at the end. The order is completed in the form of airborne cargo. The whole process can be said in one go, very convenient.



This can't help but make us feel envious, but when we come back to God, we also have doubts: When using drones to take delivery, can we come true in our country?

Before answering these questions, we first come to understand the development process of the UAV distribution service in the United States. In the United States, there are many...Continue Reading
Posted by phyngineer | Nov 08, 2019 @ 01:44 AM | 976 Views
Electricity is the foundation of modern social development. Timely and effective powerline inspection is very important to ensure grid security. There were numbers of challenges and difficulties during power line inspection in the past years: long transmission line, time-consuming procedures etc. Consequently, the inspection efficiency was low, the workers were placed in higher risks. In response to the above pain points, MMC UAV develops the automatic power lines inspection system with UAV. So, what can UAV technology do in the power industry? Let's take a brief introduction.

 Autonomous inspection

The drone patrolman plans the route on the high-precision line three-dimensional map prepared in advance, and applies the centimeter-level real-time positioning technology. The drone automatically patrols the designated line, and automatically detects the device through the AI and sends back the diagnostic result data. The control room provides instant access to the operation of transmission lines, ground lines, fittings, insulators, and towers. Drone power line inspections include normal inspections, fault inspections, and special inspections.


3D modeling

UAV transmission line space distance measurement technology can realize the integration of "small electric drone + microlaser range finder", by merging laser point cloud, DOM, DEM, high-definition image, multi-spectral, infrared photography, video image, etc. The data can form a visible light composite...Continue Reading
Posted by phyngineer | Nov 06, 2019 @ 10:41 PM | 1,340 Views
UAV powerline inspection can observe the high-voltage transmission line in the air at different angles, hovering and shooting multi-angle image and video data, which can detect the defect of the transmission line and the hidden danger of the channel quickly, intuitively, comprehensively and accurately. The investigation can obtain the best on-site information under complicated terrain and bad weather conditions, effectively compensate for the shortcomings of the traditional way of patrolling blind spots, thereby improving the working efficiency of the first-line inspection personnel.

In actual work, when using a drone to patrol a transmission line, the patrol efficiency is closely related to the operator's familiarity with the operation of the aircraft and the complexity of the environment. For example, some skilled grid employees can use their aircraft to patrol dozens of towers a day. Some employees can also use the environment to bring them the advantage of operating the aircraft to the tower on the island a few kilometers away. In contrast, some "new drivers" who have just learned to fly may need several times to complete some veteran inspection targets. This article will take the daily transmission line inspection operation as an example to analyze how to efficiently carry out the daily patrol operation of a transmission line on a section of the line.


Work machine type selection

According to different tasks and line environment, different models can...Continue Reading
Posted by phyngineer | Nov 06, 2019 @ 02:31 AM | 485 Views
UAV mapping technology is the best way to make full use of existing data and information resources. It is a key technology and an essential means to achieve sustainable development of marine resources and the environment. It plays a role in global change, resource surveys, environmental monitoring, and prediction. The irreplaceable role of technology. The results are mainly reflected in DOM, DLG, real-life three-dimensional and so on.
1. UAVs do coastal monitoring
Utilizing remote sensing images of UAVs in different periods, through the integrated application of UAV remote sensing image processing technology and GIS technology, combined with human-computer interaction visual interpretation technology, the dynamic changes of coastline and wetland are monitored.
According to historical data, regional planning and other data, the comparative analysis of current and historical data is carried out to obtain the change trend and the change trajectory, and to obtain the image changes of different time-domain monitoring targets (change of the corridor, area change, functional area change, ocean Environmental conditions, etc.; Analyze the monitoring target characteristics indicators, compare the changes in the target characteristics in the time series, and analyze the change trend and change characteristics. The drone aerial survey provides support for marine surveillance monitoring and law enforcement.
2. Island reef mapping

Utilizing the advantages of low requirements, fast...Continue Reading
Posted by phyngineer | Nov 05, 2019 @ 04:00 AM | 655 Views
The 17th China International Social Public Safety Expo (CPSE) held from October 28th-31 th,2019 in Shenzhen Convention & Exhibition Center. The security expo shows the advanced technology in artificial intelligence, driverless, big data, and smart city, attracting more than 1,500 exhibitors from more than 100 countries and regions around the world.

MMC Uav security attracts attention
As a leading industrial UAV manufacturer, MMC has made a new breakthrough in the field of UAV intelligent security. This expo, MMC with the theme of "SCI-TECH AERIAL SECURITY SOLUTION". The latest automatic UAV security system, diversified flight platform and the first comprehensive supply chain of industrial UAV, fully demonstrated the strength of MMC, for the audience brought a truly rich and intelligent experience, which attracted many exhibitors and visitors from the exhibition.

THE new drone management system for automatic intelligent security
In recent years, industrial light-small drones have gradually been applied to the security field, becoming a flexible and "air security weapon." In this expo, MMC's latest automatic drone inspection system security solution based on reliable communication, AI big data and high-precision situational awareness technology, using Mspace system for 3D real-world modeling and UAV autonomous routes Planning, able to provide the management department with accurate information such as drone data and flight trajectory in a remote and...Continue Reading
Posted by phyngineer | Nov 04, 2019 @ 06:12 AM | 2,074 Views
At 18:03 on November 2, the command center of the fire brigade of Guilin City, Guangxi Province received an alarm: a mass was trapped on an unknown mountain. The Guilin fire brigade command immediately dispatched a rescue formation, 2 fire engines and 14 commanders. Go to the scene to rescue. When arriving at the scene, due to the darkness of the weather, rescuers could not confirm the specific location of the trapped person. At 18:37, rescuers used drones to search for the specific location of trapped people. After reconnaissance by drones, they found trapped people on the top of a mountain. Due to the difficulty of steep mountain rescue, it was decided to use drones for rescue.

At 19:08 on the 2nd, under the unified leadership of the rescue command, the fire commander and a civilian police officer carried rescue equipment and lighting equipment, hatchets, etc. to the mountains for search and rescue, until the early morning, the weather became darker and the rescuers found that there was no The road can go up. Rescuers had to go down the mountain to redeploy the rescue plan and use the loudspeakers on the heavy-duty drones to scream for the trapped people and use the drone to deliver food to the trapped people.

At 7 o'clock on the 3rd, rescuers rushed to the scene to carry out rescue. Rescuers used heavy-duty drones to find a way up the mountain for the firefighters to detect the terrain and detect the location of the trapped people. At around 14:00 on the 3rd, the...Continue Reading
Posted by phyngineer | Nov 01, 2019 @ 05:33 AM | 2,784 Views
The current hotspots in the technology circle are non-UAVs. Whether it is "breaking into" the White House or helping Wang Feng to make a headline, the exposure of drones has soared day by day, and the commercial value of the "big toys" in the new era is rapidly digging. There have been rumors recently that MI has invested in a new drone research and development team. Last week, Taobao and Yuantong joint merchants carried out drone delivery services in specific areas such as Beijing.
 
With the gradual application in the field of aerial photography, express delivery, and security, the commercial value of drones is being tapped, and the heating of the drone consumer market has also made drone manufacturing companies highly regarded.
 
Small things, large output value
 
The drone was originally a "toy" of geeks (referring to cutting-edge technology enthusiasts), but a technology product within a niche range. As exposures increase, so does the discussion about the drone market. At the beginning of this year, 14 companies in the field of drones participated in the CES exhibition (International Consumer Electronics Show), which leads the global consumer electronics trend, including IT giants such as Intel.
 
According to data from the Consumer Electronics Association, the number of civilian UAVs in the world is expected to be sold in 2015. The market size is expected to increase by 55% compared with last year, reaching 130 million U.S. dollars....Continue Reading
Posted by phyngineer | Oct 31, 2019 @ 01:13 AM | 3,289 Views
Drones are a very popular area, and many entrepreneurs in China have begun to develop drones. The drone has been converted from civilian to civilian. The following 10 areas have changed due to the application of drones.
Detecting oil fields
Oil is a rare resource that is vital to human survival, but detecting oil wells is a very dangerous thing. With special sensors, professional drones are equipped with detection equipment to detect the state of the well. The staff can know whether the oil field is in the best condition and stable operation through data or images.
Combat crime
Police forces in some countries are already using drones to search for potential crimes. Just as a superhero will stand on the top of a building to see the city he protects, no one can travel through the city and see if there is a crime. Perhaps this would invade the privacy of some people, but it is reasonable to use a drone to deal with crimes in a timely manner. In particular, the current police drones can be installed on the detection equipment to understand the criminals' dynamics, and the arresting equipment can arrest the criminals.
Assist in search and rescue
Searching for missing persons in remote areas is very difficult. We often see that search and rescue personnel spend a few days searching for a person, and search and rescue personnel are also at risk during this search. Drones can pre-search in designated areas and direct search and rescue personnel to find victims or find safer...Continue Reading
Posted by phyngineer | Oct 30, 2019 @ 02:31 AM | 1,964 Views
The emergence of industrial drones has provided many conveniences for people's lives. The broad development space and the expansion of the sub-sector of the masses have made the drones penetrate into all areas of life. At the peak of the festival day, the traffic police are using drones to capture traffic violations such as illegal parking, illegal occupation of emergency lanes, illegal lane changes, etc.; firefighters use drones to search and rescue trapped people; power inspectors are using no ones. Machines detect hidden dangers; farmers are using drones to monitor farmland and predict crop yields... Flexible and intelligent airborne robots are reducing costs and increasing efficiency for more industries.
By carrying various equipments from different industries to the drone flight platform, and with various communication links, navigation systems and professional application software, the drones are gradually integrated with various industries to become the air intelligence nodes of the three-dimensional world.
Leading Industrial Drone Manufacturer for Commercial Drone Solutions, MMC UAV is widely used in various industries due to its stable flight performance, compatibility with a robust standardized interface, and different professional loads.

The drone has a fixed-point flight and autonomous flight mode. The drone is equipped with a high-altitude megaphone to help the traffic police to provide emergency warnings for traffic flow and emergencies during the festival,...Continue Reading
Posted by phyngineer | Oct 29, 2019 @ 01:17 AM | 1,958 Views
The drone industry boom swept the world, and the domestic market was “savagely growing”

In the past five years, the speed of expansion of global drones has been very rapid, and the growth rate of output and output value has been above 50%. By 2018, the global production of drones reached 4.61 million, and the output value increased to 8.17 billion US dollars. China's drones have developed into a globally advantageous industry, especially in the field of civilian drones, which has an absolutely dominant position in the world, accounting for more than 70% of the market. In the past five years, a large number of UAV industrial chain related enterprises have emerged in China. By 2018, the number of enterprises has reached 5,513, and the sales volume has exceeded 3 million. The market scale has exceeded 40 billion yuan, and the growth rate has remained at a high level of 50%. Savage growth."

UAV is a new round of industrial revolution hotspots, industry investment is hot

In China, there are emerging benchmarks such as DJI, MMC, Ehang, EWATT, XAGi and Zero Tech; and technology giants such as Google, Amazon, Apple, Samsung, Tencent and Xiaomi have also deployed the application and development of drones; Heavy-duty, Leibai Technology, Longxin GM, Zongshen Power, AVIC Electromechanical, AVIC and other listed companies have deployed civil drones through independent research and development, mergers and acquisitions, industry-university-research cooperation, and...Continue Reading
Posted by phyngineer | Oct 28, 2019 @ 02:56 AM | 1,508 Views
The drone has the advantages of easy handling, low cost, and taking off and landing at any time. In an emergency rescue incident, it can quickly penetrate the disaster site, obtain on-site image data, and avoid casualties. With the maturity of drone technology, drones have become an indispensable part of rescue operations, and have great potential and product demand in the emergency rescue market.

With the advancement of modern science, many fields have a great connection with modern information technology. Rescue drones are the product of the combination of information technology and intelligent manufacturing. Because the rescue drone has the advantages of disaster investigation, transportation materials, emergency communication, etc., it can provide multi-faceted assistance in large-scale sudden disasters, and natural disasters and accidents are generally sudden leave, which has not yet reached the forecast. And avoid, so the demand for rescue drones is still large, and the development prospects are broad.

According to the "2019-2023 Relief UAV Industry Market Depth Survey and Investment Prospect Forecast Analysis Report" released by the New World Industrial Research Center, the rescue mission faces a harsh environment and time constraints, and the rescue drone is highly efficient. With low environmental requirements, it can effectively complete various rescue activities and gain greater recognition and support in the emergency rescue industry. With the...Continue Reading
Posted by phyngineer | Oct 25, 2019 @ 02:50 AM | 2,813 Views
On October 28-31, 2019, the 17th China International Public Safety Expo (CPSE) will be held at the Shenzhen Convention and Exhibition Center. With the acceleration of the construction of smart cities, smart transportation, and smart policing, drones are becoming an indispensable device for social public safety services.
Drones in public safety
Nowadays, illegal criminals are increasingly diversified and high-tech and traditional artificial security models are facing many difficulties. The drones equipped with multi-function pan/tilt, due to the advantages of self-planning routes, all-round monitoring in the air, accurate data collection, and automatic intelligent control, the drone quickly collects images and transmits them back to the command center in the event of an emergency. Police officers can grasp the location of the incident in real-time and deploy it in time. It has been widely used in the security field, especially in the pursuit of fugitives, patrol search, anti-terrorism and riot, traffic management, fire fighting, large-scale event security and social assistance and rescue. The task played an irreplaceable role.
As the leading brand of industrial drones and the world's first drone company that has opened the entire industrial chain of industrial drones, MMC Aviation is committed to building automation based on reliable communications, AI big data and high-precision situational awareness technology. The drone security system is widely used in practical...Continue Reading
Posted by phyngineer | Oct 24, 2019 @ 01:41 AM | 3,001 Views
UAVs are not only used for film and television aerial photography, but also used in large-scale use in environmental monitoring and enforcement. On October 21st, the first China Henan Province Environmental Monitoring System UAV Law Enforcement Skills Competition was held. The participants of the provincial environmental monitoring system gathered in Zhengzhou City and competed on the same stage, and finally decided the first prize and the second prize. And "unmanned law enforcement experts."

In the arena, a UAV took turns to take off, obstacles through, and video recordings and other competitions were contested. The players competed on the field with operational skills and on-site forensics.

"The arduous task of pollution prevention and control has forced us to learn to use high-tech means to enforce the law and be able to arrive at the scene for evidence collection." Wang Anning, an award-winning athlete from the Anyang Environmental Monitoring Detachment, said that the use of drones will lead to environmental monitoring and enforcement. The more popular, the province's environmental law enforcement training this year, the use of drone skills as an important part of the training.

"Many of them are not easy to check, and it is easy to find them from the sky with drones." Zhang Kunfeng, the law enforcement commander of the Shangqiu Environmental Monitoring Detachment, said that they have started using drones in the past two years, and...Continue Reading
Posted by phyngineer | Oct 22, 2019 @ 01:57 AM | 1,322 Views
According to US media reports, on October 15, a young boy named Essen and a pet dog were lost near the town of Pamo, Minnesota, USA. A total of 600 volunteers participated in the search and rescue, and the local police also dispatched patrol helicopters. Searching, many people who are concerned about the event prayed for the boy online.

The search and rescue work continued from 4 pm to late night. Due to the lack of additional lighting on the farm night, the visibility was extremely poor and the outdoor temperature dropped drastically, which brought great difficulties to the search and rescue work. I thought that Steve, a volunteer from the drone service company, brought his drone, a multi-functional drone developed by an industrial drone manufacturer in China, equipped with a thermal imaging lens. It can continue to work at night.

It is understood that the thermal imaging camera used by Steve integrates a high-precision thermal imaging sensor and a 4K visible light sensor. It can record and transmit thermal imaging and visible light effects at the same time. In real-time image transmission, thermal imaging and visible image can be displayed side by side or picture-in-picture according to the needs. At the same time, the latest machine intelligence technology is combined with FLIR MSX image enhancement technology. The combination of visible light and thermal imaging provides rich detail and produces sharper thermal imaging, making it easier for users to identify targets. At two o'clock in the morning, when searching for a cornfield about a mile from the farm, two spots appeared in the thermal image, and a long spot was moving in place. "I think it should be a pet dog." And the boy, so I informed everyone," Steve said. Search and rescue personnel immediately went to the location to successfully find Ethan and his pet dog.

After being rescued, the boy had all the good signs and had returned home after being examined by the hospital.