EP3545477A1 - Signal evaluation of an acceleration sensor - Google Patents
Signal evaluation of an acceleration sensorInfo
- Publication number
- EP3545477A1 EP3545477A1 EP17825109.6A EP17825109A EP3545477A1 EP 3545477 A1 EP3545477 A1 EP 3545477A1 EP 17825109 A EP17825109 A EP 17825109A EP 3545477 A1 EP3545477 A1 EP 3545477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acceleration sensor
- movement
- output signal
- container
- navigation system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
- G06Q10/0833—Tracking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
Definitions
- the invention relates to a method and an apparatus for carrying out the method for container tracking according to the features of the preambles of the two independent claims.
- Navigation systems can be used to record the movement of the container.
- a GPS module attached to the container that connects to satellites and with the help of which the position of the container and also changes in position (for example, during transport, loading or the like) can be determined.
- Such a device must be operated with a stationary power source (for example battery), since in the harsh environment in which such containers are moved, other energy sources (such as solar cells) are out of the question. If, however, solar cells are used (which is basically conceivable), theirs is sufficient Energy is often not enough to provide the device permanently sufficient power because it is not always guaranteed that the solar cells provide sufficient energy due to insufficient sunshine. On the other hand, it may happen that the container is standing for a long time and thus does not change its position (for example when transported by a ship), but in particular the GPS module still consumes power during this time.
- a stationary power source for example battery
- other energy sources such as solar cells
- the invention is therefore based on the object to provide a power-saving method and thus a power-saving device for performing this method.
- the invention provides that the movement or the rest of the object is additionally detected by an acceleration sensor whose output signal is fed to a computing unit with an evaluation logic, wherein it is determined as a function of the output signal, whether the object is at rest or in motion and, if it is determined that the output signal of the acceleration sensor does not change for a presettable time, it is assumed that the object is not moving, in which case a sleep mode is provided is.
- the movement of the mobile object is tracked by means of the navigation system (also called tracking), during which tracking the navigation system is connected to the power source, which then consumes power for the position detection and possibly also display or transmission of the detected position.
- the invention provides a possibility to provide a sleep mode with which, in particular, the navigation system can be switched off when the mobile object is at rest.
- an additional acceleration sensor is used which provides a first output signal when the object is moving and which emits another different output signal when the mobile object is at rest.
- the sleep mode is not yet activated. However, if it is found that the rest of the object representing output signal is present, the sleep mode is activated. It is provided according to the invention as a possibility for the sleep mode, that during the activation of the sleep mode, the navigation system is disconnected from the power source. It is also conceivable that further elements of the entire system for tracking are disconnected from the power source during the active sleep mode, which need not be powered in the case where the object is at rest. It goes without saying that the acceleration sensor and the Ausncelogik must be supplied during the active sleep mode with power, since by means of the acceleration sensor must be determined whether the object begins to move again. However, the navigation system is not required for this purpose, so that it can remain switched off until it is determined by means of the acceleration sensor that the object changes from rest into a movement.
- the data of the navigation system are transmitted directly or optionally after evaluation by radio to a central server and this transmission is switched off until a change in the output signal of the acceleration sensor is detected again. If it is determined by the evaluation logic that the mobile object is at rest or is moved so that the acceleration is below a predeterminable limit, it is assumed that it is not necessary to change the data of the navigation system, the position of the mobile object to a central server for tracking the position of the item transfer. Only when it is determined by means of the evaluation logic that the output signals of the acceleration sensor change substantially, ie, if they are above the predefinable limit, it is assumed that the mobile object is significantly moving and the transmission of its position to the central server is required.
- the navigation system is turned on again, so then so that the movement of the object is captured and transmitted to the central server.
- the output signal of the acceleration sensor which represents the movement of the object, is therefore used to detect whether the object is moving again during the active sleep mode during which the navigation system was disconnected from the power source, since in this case it is assumed in that the object is selectively transported further, so that this process can in turn be tracked (tracked) by the navigation system.
- the movement of a container for the transport of goods is tracked as a mobile object.
- the method can be carried out by means of a modular device which is arranged in a separate housing, this unit being permanently or detachably fastened to the container.
- the navigation system in principle, the actual transport of the container can be tracked, if it is transported for example by truck, ship, plane or otherwise. However, if it is turned off for a certain amount of time, which is generally unknown in advance, that is, not moved, it is not necessary to track its movement, and then the navigation system can be turned off.
- the acceleration sensor which can also detect whether the object is in motion or at rest.
- the Output signal of the acceleration sensor used to evaluate whether the container is at rest or in motion, and then put the entire system in a sleep mode when it has been determined that the container is not moved. Only when the acceleration sensor detects that the container is moved further, the hitherto active sleep mode is disabled, in particular the power supply of the navigation system and / or transmission means, with which the position of the container is transmitted to a central server, turned on again.
- the device according to the invention further comprises an acceleration sensor and a computing unit with an evaluation logic, wherein the motion or the rest of the object is detected with the acceleration sensor, the output signal of the evaluation logic supplied is determined, depending on the output signal, whether the object is at rest or in motion, and then, if it is determined that the output signal of the acceleration sensor for a predetermined time does not change, it is assumed that the object is not moves, then the device is put into a sleep mode.
- a device is provided with which the method described above is performed.
- the device has transmission means by means of which the data of the navigation system are transmitted to a central server.
- the data of the navigation system are transmitted to the central server for tracking the position of the mobile object only when an appreciable movement of the mobile object has been detected by means of the acceleration sensor. Otherwise, such a transmission remains, ie, that at least the navigation system, but possibly also the Transfer means, separated from the power source and thus put into a sleep mode to save power.
- the device has transmission means by means of which signals are transmitted from a central server to the device.
- signals are transmitted from a central server to the device.
- a device for arrangement on a container which comprises at least one acceleration sensor, an evaluation logic and a current source.
- the acceleration sensor movements or changes in movement of the container are detected.
- the detected movements or movement changes are evaluated by the evaluation logic, whereby the entire system is supplied with power by the power source.
- the evaluation logic detects the output signal of the acceleration sensor and evaluates it. If it is determined that the output signal of the acceleration sensor does not change for a predeterminable time, it is assumed that the container is not moving. In such a case, the entire device can be put in a sleep mode, thereby saving energy.
- the signals of the acceleration sensor are transmitted directly or optionally after evaluation by radio to a central server, this transmission is switched off, for example, until a change in the output signal of the acceleration sensor is detected again.
- the transmission of the data representing a movement of the container takes place again only when the container has been moved again after a certain service life.
- the acceleration sensor detects that the container has moved again, the entire system is switched on again, so that the movement of the container can be detected and transmitted to the central server.
- a container is, for example, at rest in the loading area below a container crane, by means of which the container is to be loaded onto a ship.
- the output of the acceleration sensor signals that the container is at rest. If, for example, an evaluation of the sensor signal occurs every minute and no change is detected, the entire system is put into sleep mode. However, if it is subsequently determined during a monitoring period of, for example, one minute that the output signal of the acceleration sensor changes, the entire system is turned on, since it can be assumed that the container has been picked up and moved by the loading crane. During this time, it is necessary to monitor the further movement of the container, at least by means of the acceleration sensor.
- the mentioned monitoring or determination period of one minute is purely exemplary and can, of course, be selected smaller (in the second or ten-second range or even greater than one minute).
- the apparatus for carrying out the method in any case comprises the acceleration sensor, the evaluation logic and the power supply (for example, all arranged together in a housing) to detect a movement or a standstill of the container and the entire system in an active mode or in a sleep mode
- the data may be transferred to a central server via a radio module, it may also be thought of incorporating into the device a module by means of which, and with the help of satellite navigation, the position of the container at any time recorded and tracked.
- the term "navigation system” as used heretofore and hereinafter is representative of the function of a satellite-based positioning system
- the GPS module is also a particular embodiment of a GNSS module in general since GPS is a sub-variant of GNSS.
- An embodiment of a device according to the invention for tracking a mobile object, in particular a container, a truck semi-trailer or the like, will be described below and explained in more detail with reference to the single figure.
- the reference numeral 1 as far as shown in detail, a device for tracking a mobile object is referred to.
- the device 1 which is shown on the left and above the dashed line in the figure, comprises a control unit 2, to which an acceleration sensor 3 is connected.
- an acceleration sensor 3 is connected to the control unit 2, to which an acceleration sensor 3 is connected.
- more than one acceleration sensor may be connected in particular for the purpose of redundancy.
- the at least one acceleration sensor 3 is preferably arranged in the device 1, in particular in its housing.
- a computing unit 4 with an evaluation logic, a navigation system 5, a power source 6 and transmission means 7.
- at least one further sensor 8 can be connected to the control unit 2. With such an additional sensor, for example, the temperature can be detected and taken into account in the evaluation or transmitted.
- the at least one sensor 8 is arranged outside the device 1 and connected thereto, at least one sensor 8 can alternatively or additionally be arranged within the device 1, in particular within its housing.
- the transmission means 7, for example a modem, are suitable and designed in particular for transmitting the data of the navigation system 5 to a central server 9.
- the position of the mobile object on which the device 1 is arranged can be tracked when the relevant elements of the device 1, in particular the navigation system 5 are not in the sleep mode.
- device 1 When device 1 (either all or part of it) is in sleep mode, there is no data exchange between device 1 and central server 9 over a link 10, preferably radio transmission. Only when a significant movement of the mobile object has been detected by means of the acceleration sensor 3, the device 1 is "woken up", so then detected by the navigation system 5, the position of the mobile object and tracked and this data movement over the transmission path 10 by means of the transmission means 7th be transmitted to the central server 9.
- a rest state or a movement of the mobile object is detected by means of the acceleration sensor.
- the acceleration sensor detects whether the mobile object is moved or not, for which purpose a change in the speed with which the object is moved is used. If this change is below a predeterminable limit, it is assumed that the mobile object is at rest. Smaller accelerations, such as impacts that result in minimal movement of the object, should not result in the deactivation of the sleep mode. For example, if a container is aboard a ship, the limit is defined so that, for example, minor movement of the container due to swell will not result in deactivation of the sleep mode even though the container freighter itself is in motion.
- the device is in its sleep mode to save energy. For example, if the container is picked up by a container crane and deposited on a semi-trailer for onward transport, the acceleration limit can be set to disable the previously active sleep mode. If the container is transported on the trailer by a truck, it is assumed that the position of the container should be followed up and the sleep mode is therefore disabled. However, the threshold may be selected such that red light phases during which the truck is standing, for example, are considered to be idle and the device (or its relevant parts) is put into sleep mode during that, albeit short, time
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Economics (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Theoretical Computer Science (AREA)
- Strategic Management (AREA)
- Operations Research (AREA)
- Marketing (AREA)
- General Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Quality & Reliability (AREA)
- Automation & Control Theory (AREA)
- Entrepreneurship & Innovation (AREA)
- Development Economics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Navigation (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016122912 | 2016-11-28 | ||
DE102016123327 | 2016-12-02 | ||
PCT/EP2017/080633 WO2018096166A1 (en) | 2016-11-28 | 2017-11-28 | Signal evaluation of an acceleration sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3545477A1 true EP3545477A1 (en) | 2019-10-02 |
Family
ID=60923430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17825109.6A Ceased EP3545477A1 (en) | 2016-11-28 | 2017-11-28 | Signal evaluation of an acceleration sensor |
Country Status (6)
Country | Link |
---|---|
US (1) | US11378402B2 (en) |
EP (1) | EP3545477A1 (en) |
JP (1) | JP2020513616A (en) |
CN (1) | CN110214333A (en) |
DE (1) | DE102017128069A1 (en) |
WO (1) | WO2018096166A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4092382A1 (en) * | 2021-05-20 | 2022-11-23 | Sony Group Corporation | An electronic device and a method for determining a transportation parameter of a wireless device |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8280682B2 (en) * | 2000-12-15 | 2012-10-02 | Tvipr, Llc | Device for monitoring movement of shipped goods |
US8786437B2 (en) * | 2000-09-08 | 2014-07-22 | Intelligent Technologies International, Inc. | Cargo monitoring method and arrangement |
US7072668B2 (en) * | 2001-05-22 | 2006-07-04 | Geospatial Technologies, Inc. | Durable global asset-tracking device and a method of using the same |
JP4545703B2 (en) * | 2006-03-17 | 2010-09-15 | 日本電信電話株式会社 | Wireless tag and wireless tag operation control method |
JP2008113366A (en) * | 2006-10-31 | 2008-05-15 | Csc:Kk | Mobile communication terminal device |
JP2009145980A (en) * | 2007-12-11 | 2009-07-02 | Toshiba Tec Corp | Work schedule management device |
CN201259540Y (en) * | 2008-09-02 | 2009-06-17 | 青岛海信移动通信技术股份有限公司 | Low power consumption positioning terminal |
CN101738622A (en) * | 2009-11-26 | 2010-06-16 | 沈阳晨讯希姆通科技有限公司 | Method for judging stillness of GPS tracing equipment with acceleration sensor |
JP5848191B2 (en) * | 2012-05-15 | 2016-01-27 | ユーピーアール株式会社 | Distribution management system, distribution management terminal and distribution management method |
JP2014052870A (en) * | 2012-09-07 | 2014-03-20 | Fujitsu Telecom Networks Ltd | Transmitter, slave station device, master station device, and tracking system |
US9779379B2 (en) * | 2012-11-05 | 2017-10-03 | Spireon, Inc. | Container verification through an electrical receptacle and plug associated with a container and a transport vehicle of an intermodal freight transport system |
JP5972248B2 (en) | 2013-11-18 | 2016-08-17 | 三菱電機株式会社 | Synchronous motor rotation phase detector |
CN104614749A (en) * | 2015-02-10 | 2015-05-13 | 上海美迪索科电子科技有限公司 | Low-power-consumption positioning method based on motion posture |
-
2017
- 2017-11-28 WO PCT/EP2017/080633 patent/WO2018096166A1/en active Application Filing
- 2017-11-28 CN CN201780084536.8A patent/CN110214333A/en active Pending
- 2017-11-28 DE DE102017128069.3A patent/DE102017128069A1/en not_active Ceased
- 2017-11-28 EP EP17825109.6A patent/EP3545477A1/en not_active Ceased
- 2017-11-28 JP JP2019528468A patent/JP2020513616A/en active Pending
-
2019
- 2019-05-28 US US16/423,722 patent/US11378402B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102017128069A1 (en) | 2018-05-30 |
US11378402B2 (en) | 2022-07-05 |
WO2018096166A1 (en) | 2018-05-31 |
CN110214333A (en) | 2019-09-06 |
US20190383617A1 (en) | 2019-12-19 |
JP2020513616A (en) | 2020-05-14 |
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