home monitor system

High-sensitivity Magnetic GPS Tracker For People

映射能力

磁性GPS追踪器  单位带有定义区域的底图。寻找能够接受上传的地形图和街道地图以及POI数据库的地图测绘功能,并使用安全数字高容量(SDHC)或迷你安全数字(mini SD)存储卡来存储地图和GPS数据。

高灵敏度接收机

目前大多数人体跟踪设备都具有高灵敏度,多通道并行接收机,可同时接收多达32个通道。Disse enheder ermærkbartbedre endældremodtagere ved at vedligeholde deressatellitlåsunder vanskelige forhold som for eksempel heavy forest cover。这对于电子远足来说尤为重要,在这种情况下,您可以连续离开GPS以记录完整的轨迹。

WAAS

广域增强系统是用来提高从33英尺(10米),这是受大气影响的民用标准的GPS的准确性。它通过接收来自位于精确测量的点上的不同GPS发射机的信号来工作。这些发射机测量其已知位置与GPS导出位置之间的差异,并将纠错发送到GPS单元。大多数接收机都具有内置的WAAS功能,使用由美国联邦航空管理局(FAA)提供的卫星信号进行飞机导航,从而获得10英尺(3米)或更好的精度。FAA WAAS只能在GPS单元通畅地看到天空的时候使用。其他WAAS系统由美国海岸警卫队在当地设立,用于沿海水域的船舶导航,并由政府和私人组织为测量和其他专业用途提供低至几毫米的精度。WAAS-nauwkeurigheid是openluchtnavigatie的niet nodig voor weg。Fordi WAAS只是一个很好的平台,而且还是一个很好的选择。

电池类型和寿命

街头  磁性GPS Bruk interne可充电电池,som ikke er bruger-udskiftelige,fordi de er beregreg at atkørepåkøretøjskraft。大多数GPS接收机使用两节标准AA或AAA碱性电池,锂电池或可充电镍氢(NiMH)电池。Sommige智能手机专有可充电Batterijen模块kunnen worden vervangen门de gebruiker,maar其他,zoals de iphone,hebben interne batterijen die niet userreplaceable zijn。Siden kontinuerlig brug GPS或GPS定位,在nuværende智能手机ikke呃praktiske全天eller多日行程。镍氢电池比一次性使用的碱性电池或锂电池更具环保性,而且长期使用便宜得多,因此它们是一日游和每次使用充电器的最佳选择。太阳能充电器可用于野外使用。

防水

全球卫星定位系统(GPS)开发人员,马尔代夫航空公司在苛刻的航空和航天领域开展业务。获得一个透明的防水甲板袋,让您操作该单位,而无需删除它。陆地旅客可以使用拉链的储物袋。防水不能保证设备会浮动。有些做,有些则不。防水袋也是很好的保证,以确保您昂贵的GPS不会消失在深处。Can GPS take place of dash cam?

更多信息在http://www.jimilab.com/。

Using the GNIS for your GPS Tracking Device

When you start using a Personal GPS Homing Device , you’ll soon discover that it’s pretty numbers-oriented. There’s time, speed, distance, altitude, and (of course) the location coordinates. But quite often you’ll want names to go with those numbers. Or you might need to convert those coordinate numbers into another format. Read here to discover how to locate places by their names and get their coordinates (and other information) and how to easily convert coordinates from one coordinate system to another.
Finding Your Way with Online Gazetteers

Sometimes you need a little bit more information about a location.

 You know a place name, but you don’t know exactly where the place is located.

 You’ve heard about a place but don’t know whether it’s a mountain peak, a river, or a town.

 You generally know where a place is, but you need the exact latitude and longitude or Universal Transverse Mercator (UTM) coordinates.

In these cases, you can turn to a gazetteer, which is a collection of place names with such useful data as geographic coordinates, elevation, and feature type. Gazetteers are usually published as books, but digital versions are available. The U.S. government has two free online gazetteer services:
Using the Geographic Names Information System (GPS Solution )

The Geographic Names Information System (GNIS) is the federal repository of geographic name information. The database contains information on nearly 2 million physical and cultural geographic features in the United States and its territories: a city, dam, island, school, or any other designated feature type. The GNIS search page has a number of different data fields that you can use to narrow down your search, including

Feature Name: This is the name of the feature you’re looking for. This can be either the whole name or a part of the name. Feature name searches aren’t case sensitive.

Query Variant Name: Some features have other names in addition to their primary name. If you select the Yes radio button, records with matched variant names are displayed.

State or Territory: From this drop-down list, select the state or territory where the feature is located

County Name: If you click the County Name button, a drop-down list box shows all the counties in the currently selected state.

If you know the county where the feature is located, enter it to speed up your search.

 Feature Type: The Feature Type drop-down list box contains all the feature types, such as bridges, canals, lakes, and populated places. If you know what the feature is, select its type.

 Elevation Range: The Elevation Range text boxes let you search for features that occur at a certain height range; use feet when entering the range values.

 Topo Map Name: You can confine a search to features only found within a United States Geological Survey ( Portable GPS ) 7.5 minute topographic map by entering the map’s exact name.

The more you narrow a search, the faster it is. For example, if you know the county where a feature is located, select it. If you don’t know much information about the feature, be patient. The GNIS server can be pretty slow. If GNIS finds any records that match your search criteria, it lists all the matching features.

More information at http://www.jimilab.com/blog/ .

GPS Mini Tracker that display maps

In these instances, all the maps and GPS receivers must use the same datum. If the datums are different, the location ends up in two different physical places even though the map coordinates are exactly the same. This is a common mistake: GPS Vehicle Tracking Device use the WGS 84 datum by default, and USGS topographic maps use the NAD 27 datum. If you mix the datums, your location can be off by up to 200 meters (roughly 200 yards, if you’re metrically challenged). Utilities can convert coordinates from one datum to another (some are described in Chapter 11) but it’s easier just to get all the datums on the same map. A GPS receiver alarm can transmit a tone or display a message when you approach a location that you specify. This feature can be especially useful when you’re trying to find a place and visibility is limited by darkness or inclement weather — or you’re busy doing something else and aren’t looking at the GPS Mini Tracker screen. Every GPS Mini Trackerhas an information page that shows waypoints and tracks. The page is a simple map that plots travel and locations. It doesn’t show roads, geographic features, or man-made structures. Figure 3-4 shows two GPS receiver screens: simple location plotting on the left, and a more sophisticated, uploaded map on the right. GPS receivers that display maps use proprietary map data from the manufacturer. That means you can’t load another manufacturer’s or software company’s maps into a GPS receiver. However, clever hackers reverse-engineered JIMI’s map format. Programs on the Internet can create and upload your own maps to JIMI Vehicle GPS Locator; GPS mapper is popular. A handheld GPS receiver’s screen is only several inches across. The limitations of such a small display certainly don’t make the devices replacements for traditional paper maps. All GPS receivers can tell you which direction you’re heading — that is, as long as you’re moving. The minute you stop, the receiver stops acting as a compass. To address this limitation, some GPS receivers incorporate an electronic compass that doesn’t rely on the GPS satellites.GPS tracking devices you can go to http://www.jimilab.com/products/gt350-mini-personal-gps-tracker.html. GT350 Portable and Long Stand-by Time Mini Personal GPS Tracker is designed for inspectors, travelers, outworkers, etc. It supports a wide variety of functions including emergency, geo-fence boundary crossings, voice monitoring and SOS alarm. GPS+LBS positioning .Update and report the location quickly and accurately. 90 days standby time (1 position per day). 3D acceleration sensor for vibration alert .You will be alerted when it detects any vibration. Geo-fence alarm .A geo-fence can be set by SMS command to provide a safety net for your loved ones. When anyone carrying the tracker walks in/out of the fence, SOS numbers will receive alarm. Voice monitor . Monitor mode enable you hear the sound around the tracker. SOS emergency call. There will be SOS button for emergency SOS alarm. Anyone carrying the tracker can long press the SOS button to activate SOS alarm. SOS alarm and location will be sent to pre-set SOS numbers. Multiple position query modes.SMS, APP, Web. More information at http://www.jimilab.com/. Should you have any other question, please contact us at http://www.jimilab.com/contact/.

GPS Mini Tracker that display maps

In these instances, all the maps and GPS receivers must use the same datum. If the datums are different, the location ends up in two different physical places even though the map coordinates are exactly the same. This is a common mistake: GPS Vehicle Tracking Device use the WGS 84 datum by default, and USGS topographic maps use the NAD 27 datum. If you mix the datums, your location can be off by up to 200 meters (roughly 200 yards, if you’re metrically challenged). Utilities can convert coordinates from one datum to another (some are described in Chapter 11) but it’s easier just to get all the datums on the same map.

A GPS receiver alarm can transmit a tone or display a message when you approach a location that you specify. This feature can be especially useful when you’re trying to find a place and visibility is limited by darkness or inclement weather — or you’re busy doing something else and aren’t looking at the GPS Mini Tracker screen. Every GPS Mini Trackerhas an information page that shows waypoints and tracks. The page is a simple map that plots travel and locations. It doesn’t show roads, geographic features, or man-made structures. Figure 3-4 shows two GPS receiver screens: simple location plotting on the left, and a more sophisticated, uploaded map on the right.

GPS receivers that display maps use proprietary map data from the manufacturer. That means you can’t load another manufacturer’s or software company’s maps into a GPS receiver. However, clever hackers reverse-engineered JIMI’s map format. Programs on the Internet can create and upload your own maps to JIMI Vehicle GPS Locator; GPS mapper is popular. A handheld GPS receiver’s screen is only several inches across. The limitations of such a small display certainly don’t make the devices replacements for traditional paper maps. All GPS receivers can tell you which direction you’re heading — that is, as long as you’re moving. The minute you stop, the receiver stops acting as a compass. To address this limitation, some GPS receivers incorporate an electronic compass that doesn’t rely on the GPS satellites.GPS tracking devices

you can go to http://www.jimilab.com/products/gt350-mini-personal-gps-tracker.html. GT350 Portable and Long Stand-by Time Mini Personal GPS Tracker is designed for inspectors, travelers, outworkers, etc. It supports a wide variety of functions including emergency, geo-fence boundary crossings, voice monitoring and SOS alarm. GPS+LBS positioning .Update and report the location quickly and accurately. 90 days standby time (1 position per day). 3D acceleration sensor for vibration alert .You will be alerted when it detects any vibration. Geo-fence alarm .A geo-fence can be set by SMS command to provide a safety net for your loved ones. When anyone carrying the tracker walks in/out of the fence, SOS numbers will receive alarm. Voice monitor . Monitor mode enable you hear the sound around the tracker. SOS emergency call. There will be SOS button for emergency SOS alarm. Anyone carrying the tracker can long press the SOS button to activate SOS alarm. SOS alarm and location will be sent to pre-set SOS numbers. Multiple position query modes.SMS, APP, Web.

More information at http://www.jimilab.com/. Should you have any other question, please contact us at

http://www.jimilab.com/contact/.

GPS for both assigning and using absolute coordinates

IN WHICH you are introduced to facts and concepts relating to the NAVSTAR Global Positioning System and have your first experience using aGPS Tracking Device.
A sports club in Seattle decided to mount a hunting expedition. They employed a guide who came well recommended, and whose own views of his abilities were greater still. Unfortunately, after two days, the group was completely, totally lost. “You told me you were the best guide in the State of Washington,” fumed the person responsible for hiring the guide. “I am, Iam” claimed the man defensively. “But just now I think we’re in Canada.” Stories like the one above should be told now (if at all), before they cease to be plausible. Actually, even at present, given the right equipment and a map of the general area, you could be led blindfolded to any spot in the great out-of-doors and determine exactly where you were. This happy capability is due to some ingenious electronics and a dozen billion dollars 1 spent by the U.S. government. I refer to NAVSTAR (NAVigation System with Time And Ranging; informally the “Navigation Star”)–a constellation of from 24 to 32 satellites orbiting the Earth, broadcasting data that allows users on or near the Earth to determine their spatial positions. The more general term in the United States for such an entity is “Global Positioning System” or “GPS.” The Russians have such a navigation system as well, which they call GLONASS (GLObal NAvigation Satellite System). (One might reflect that, for some purposes, the cold war lasted just long enough.) A more general, recent acronym for such systems is GNSS, standing for Global Navigation Satellite Systems. In the western world, GPS usually implies NAVSTAR, so I will use the two designations interchangeably in this text.
GPS tracking devices
With GPS, the earth’s surface becomes the digitizer board; the tracking device antenna becomes the puck. This approach inverts the entire traditional process of GIS data collection: spatial data come directly from the environment and the map becomes a document of output rather than input. At sea, or flying over unlit bodies of land at night, captains and pilots used methods that provided absolute coordinates. One’s position, within a few miles, can be found by “shooting the stars” for a short time with devices such as sextants or octants.
Tracking devices for people , then, gives people an easy method for both assigning and using absolute coordinates. Now, humans can know their positions (i.e., the coordinates that specify where they are); combined with map and/or GIS data they can know their locations (i.e., where they are with respect to objects around them). So the GPS concept–finding an earthly position from bodies in space–is not an entirely new idea. But the ability to do so during the day, almost regardless of weather, with high accuracy and almost instantaneously, makes a major qualitative difference. As a parallel, consider that a human can move by foot or by jet plane. They are both methods of locomotion, but there the similarity ends.
More information at http://www.jimilab.com/.  Should you have any other question, please contact us at http://www.jimilab.com/contact/.

TCP/IP-based security systems

Many organizations believe that the security contractors often are not well suited to maintain the entire system because many contractors do not employ adequate IT-trained service technicians. That will change. At the same time, many IT service organizations are discovering that they can install and service IT-based security systems. Some of these organizations are rushing in to fill the void. IT-based integrated security systems must be maintained by a group that is competent in the maintenance of IT systems. That is often not the installing security contractor, whose competence is limited to the edge devices and software. I often recommend that maintenance of the IT infrastructure, operating systems, and software be placed under the authority of the organization’s IT department.

Many TCP/IP-based security systems are installed without encryption or any other type of network security. I am fascinated by a security industry that does not secure its own systems. This could be the height of technical incompetence and moral (and possibly legal) irresponsibility. The ability to control the environment to the benefit of the users’ safety and security has profound effects on the welfare of the client, and it is a service of real value to the client’s constituents. A good example is that of irrigation systems. Upon triggering a perimeter alarm, if an intruder is proceeding across a grassy area, the intent of the intruder can be determined quickly by the remote triggering of the irrigation system. Only the most determined intruder will proceed across a large grassy area toward a target while in the embrace of a sprinkler system when a shorter path to escape is available. The use of building interfaces is limited only by the designer’s imagination. Wherever it can be imagined that a process could be facilitated by hand, it is probably possible to place that process under remote control from the console.

In most cases, the security system is not rated as a fire alarm system and should not be used as such. However, for large buildings and facilities, it is useful to use the security system as a secondary annunciator for the fire alarm system. This does not replace the fire alarm system as a primary annunciator. Usually, the fire alarm annunciation panel will be located in a fire control room that is convenient to the fire department when it accesses the building. The fire control room may not be convenient to the security control room. A useful interface between the two systems involves placing a summary or secondary lamp annunciator within the security command center (this fulfills the requirement that the primary annunciator is the fire alarm system) and also interfacing the fire alarm system to the security system such that any alarm from the fire alarm system will be displayed on the security graphic maps. By interfacing the fire alarm system to the security system in this manner, it is assured that the code requirements are fulfilled while at the same time allowing for the display of fire alarms on a single graphical user interface map that displays all other types of alarms.
More information at http://www.jimilab.com/.  Should you have any other question, please contact us at http://www.jimilab.com/contact/.

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