EP1665194A2 - Sensor - Google Patents
SensorInfo
- Publication number
- EP1665194A2 EP1665194A2 EP04762455A EP04762455A EP1665194A2 EP 1665194 A2 EP1665194 A2 EP 1665194A2 EP 04762455 A EP04762455 A EP 04762455A EP 04762455 A EP04762455 A EP 04762455A EP 1665194 A2 EP1665194 A2 EP 1665194A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- sensors
- line
- data
- voltage
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000001960 triggered effect Effects 0.000 claims abstract 2
- 230000008859 change Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
Definitions
- the invention is based on a sensor according to the type of the independent claim.
- DE 101 14 504 AI discloses a method for transmitting data from at least one sensor to a control unit. It is stated that the sensor is connected to the control unit via a two-wire line and receives the energy for its operation via this two-wire line. Then transmits over the two-wire line
- Sensor permanently modulates its measured data using current modulation. After receiving the energy, the sensor sends immediately, initially transmitting a sensor identification, a status identification and sensor values as data to the control unit.
- the sensor according to the invention with the features of the independent claim has the advantage that several sensors can now be connected in parallel to one line. To give each sensor a way to send its data, this data is sent in successive time slots.
- the triggering event for the transmission is an upshift to a first energy level by the control device on the line.
- the sensors detect this upshifting of the energy, so that this point in time triggers the timing control in the individual sensors.
- Each time control in each sensor tells the respective sensor when it can then send.
- the time controls are on top of each other coordinated so that there is no overlap when sending the sensor data.
- the process ends when the last sensor has sent its data. It is then possible for the first sensor to send its data again, so that all sensors can send their data cyclically.
- the control device it is also possible for the control device to return the energy level to a resting level after sending the data from the last sensor, in order to then start up energy again and then to initiate the sending of the data from the sensors.
- Impact sensors, pre-crash sensors, but also occupant position sensors, such as weight sensors or video sensors, are suitable as sensors here. These can be connected together on one line, or else on different lines, so that one type of sensor is connected to one line.
- the sensor according to the invention is configured very simply in order to enable unidirectional data transmission from the sensor to a control device to a control device and without resorting to bus technology.
- the sending is purely event-driven and takes place without complex bus protocol communication. This leads to high reliability and an inexpensive and simple product.
- the sensors can be designed very simply with regard to their electronics.
- the invention enables the sensors to be connected in parallel to the line.
- All sensors are connected to an interface line in parallel.
- a specific time interval is assigned to each sensor, for example by programming a parameter in the sensor.
- the line is usually designed as a two-wire line. However, it is also possible to use a single-wire line.
- the time sequence control in the sensors ensures that each sensor only sends its data in the time interval assigned to it.
- the time intervals and the times of the data transmission are designed in such a way that overlaps are avoided.
- a second energy level is always supplied to the sensor, which is lower than the first energy level, ie does not give the signal for transmission.
- This second energy level which is characterized by a second voltage, ensures that the sensor is always operated, that is to say that the sensor is not reset when the first energy level is switched on.
- the sensors have means for detecting the voltage or the voltage change in order to recognize the first or second energy level.
- FIG. 1 is a block diagram of the invention
- Figure 2 is a flow chart
- FIG. 1 illustrates the invention in a block diagram.
- Sensors S1, S2 to Sn are connected in parallel to one another via a line L, which is designed as a two-wire line, to a control unit SG.
- the voltage level US is applied to line L.
- This voltage level US is impressed on the line L by the control unit SG.
- the control unit SG thus serves as an energy source for the sensors S1, S2 to Sn connected to the line L.
- the energy consumption is used by the control unit to verify the number of sensors connected to line L.
- Sensors Sl, S2 to Sn are provided.
- the only energy supply for the sensors S1, S2 to Sn is via the line L.
- the sensors S1, S2 to Sn unidirectionally transmit data to the control unit SG, which has a receiver module for receiving this data.
- the control unit SG controls, for example, restraint devices such as airbags or belt tensioners. So that there are no collisions between the data of the individual sensors S1, S2 to Sn on line L, a mechanism must be provided which controls the transmission of the individual sensors S1, S2 to Sn.
- the transmission process be initiated via the variation of the voltage US on the line L, while the individual sensors S1, S2 to Sn each have a time control which is designed such that they assign a respective one to each sensor S1, S2 to Sn Allocates time slot for sending, ie overlaps of these time slots are avoided. Therefore, the timing control in the individual sensors S1, S2 to Sn must already be set by the manufacturer in order to match these time slots to one another. This means that sensor S1 first sends its data in a time interval and that sensor S2 then sends its data in a subsequent time interval. This is carried out until the last sensor Sn has sent its data.
- the control unit SG lowers the voltage on the line L again in order to end the transmission.
- the event that triggers the transmission is namely the increase in the voltage US.
- the voltage US can be increased in one step, or gradually. If the voltage US exceeds a threshold value such as that of the individual sensors
- the voltage US represents an energy level that is assigned to the sensors S1, S2 to Sn.
- the voltage US In the phase where the voltage level on line US is not maintained, which causes the data to be sent, there is an idle phase voltage U1 which enables the sensors to operate without having to reset them if they are to send again.
- the voltage US it is also possible for the voltage US to be raised above the threshold only briefly in order to trigger the event and then to be adjusted to a lower voltage level again because it is then no longer necessary to trigger the event. However, as said, it can also be kept at the increased voltage level for the entire transmission phase.
- FIG. 1 a timing diagram is also given below the block diagram. It is a voltage-time diagram that shows the voltage US on the one hand and the transmission phase of the individual sensors on the other. First of all, the voltage level US is at the voltage Uoff
- the voltage can be switched on and off by the control unit. This can e.g. reset the sensor. Normally, the sensor is switched on once by the control unit (voltage to US) after the vehicle has started and then remains on until the ignition is switched off again.
- the voltage is raised to the value Ul, which does not yet trigger the sending of the sensors S1, S2 to Sn, but supplies them with sufficient energy without having to carry out a reset if they are to send.
- the voltage US is raised to the value U2 for a predetermined period of time.
- the individual sensors S1 to Sn send their data S1, S2 to Sn in the time segments Tsl, Ts2 to Tsn.
- the control unit SG lowers the voltage US to the value Ul again, in order then to raise it again to the value U2, so that the transmission cycle then begins again.
- alternatives are possible, namely that the voltage US only briefly on the voltage U2 is raised to trigger the event or that the voltage US remains at the voltage U2 and the sensors send their data cyclically.
- FIG. 2 explains the invention in a flow chart.
- the voltage US is raised from the value Ul to the value U2 in order to trigger the sending of the sensors S1, S2 to Sn.
- the sensors S1, S2 to Sn recognize that the voltage has been raised. Absolute value detection or a change in voltage are possible.
- the timing control in method step 202 is then started with this lifting.
- the individual sensors S1, S2 to Sn are then assigned to them
- step 204 the control unit SG lowers the voltage from U2 to Ul after the last sensor has sent its data. Then, in step 205, the process ends. As shown above, there are several ways to perform this process cyclically or controlled by raising and lowering the voltage US on line L.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10342625A DE10342625A1 (de) | 2003-09-15 | 2003-09-15 | Sensor |
PCT/DE2004/001605 WO2005027072A2 (de) | 2003-09-15 | 2004-07-22 | Sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1665194A2 true EP1665194A2 (de) | 2006-06-07 |
EP1665194B1 EP1665194B1 (de) | 2009-06-10 |
Family
ID=34305800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04762455A Active EP1665194B1 (de) | 2003-09-15 | 2004-07-22 | Verfahren zur Übertragung von Sensordaten |
Country Status (7)
Country | Link |
---|---|
US (1) | US8106763B2 (de) |
EP (1) | EP1665194B1 (de) |
JP (1) | JP4608481B2 (de) |
CN (1) | CN100442693C (de) |
DE (2) | DE10342625A1 (de) |
ES (1) | ES2325025T3 (de) |
WO (1) | WO2005027072A2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007003542A1 (de) | 2007-01-24 | 2008-07-31 | Robert Bosch Gmbh | Steuergerät und Verfahren zur Ansteuerung von einem Personenschutzsystem |
DE102008005990A1 (de) | 2007-07-03 | 2009-01-08 | Robert Bosch Gmbh | Verfahren zum Betrieb eines Quasibusses für ein Personenschutzsystem, Steuergerät zur Ansteuerung eines Personenschutzsystems und Vorrichtung zur Übertragung von Daten von Sensoren über wenigstens einen Quasibus an ein Steuergerät zur Ansteuerung eines Personenschutzsystems |
DE102008050648A1 (de) | 2008-10-07 | 2010-04-08 | Fendt, Günter | Multifunkionsmessgerät, insbesondere geeignet zum Messen von Signalen an Kraftfahrzeug-Bordnetzen |
JP6375928B2 (ja) * | 2014-12-17 | 2018-08-22 | 横河電機株式会社 | データ収集システム |
WO2017115610A1 (ja) * | 2015-12-28 | 2017-07-06 | ローム株式会社 | 車両用スイッチ制御装置及びスイッチ状態検出方法 |
JP6672548B2 (ja) * | 2016-06-02 | 2020-03-25 | 株式会社ダイヘン | 通信システム、および、溶接システム |
EP3467598B1 (de) * | 2017-10-04 | 2021-09-29 | TTTech Computertechnik AG | Verfahren und vorrichtung zur bestimmung der schlitzdauer in einem zeitgesteuerten steuerungssystem |
FR3090858B1 (fr) * | 2018-12-19 | 2020-11-27 | Continental Automotive France | Synchronisation d’un moteur à combustion interne |
US11460142B2 (en) * | 2019-12-16 | 2022-10-04 | Saudi Arabian Oil Company | Sensor network for subsurface impact protection system |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS50156463A (de) * | 1974-06-07 | 1975-12-17 | ||
JPS5821039Y2 (ja) * | 1975-12-27 | 1983-05-02 | 株式会社島津製作所 | 2 センシキデンソウキ |
JPS5290055A (en) | 1976-01-23 | 1977-07-28 | Tohoku Metal Ind Ltd | Regulated dc power supply |
US4203096A (en) * | 1978-04-06 | 1980-05-13 | Mallinckrodt, Inc. | Sensor monitoring alarm system |
JPS5560362A (en) * | 1978-10-30 | 1980-05-07 | Toshiba Corp | General command confirmation system |
JPS57132296A (en) * | 1981-02-10 | 1982-08-16 | Omron Tateisi Electronics Co | Signal transmitter |
US4540890A (en) * | 1982-05-24 | 1985-09-10 | Galber Automazione E | System for selectively addressing electrical control signals from a control unit to a plurality of remote units |
US4464739A (en) * | 1982-07-26 | 1984-08-07 | The United States Of America As Represented By The Secretary Of The Navy | Sampled towed array telemetry |
EP0111178B1 (de) * | 1982-11-23 | 1987-10-28 | Cerberus Ag | Ueberwachungsanlage mit mehreren, kettenförmig an einer Meldelinie liegenden Meldern |
NO162317C (no) * | 1983-05-19 | 1992-02-06 | Hochiki Co | Brannalarmanlegg |
DE3330904A1 (de) * | 1983-08-25 | 1985-03-07 | Siemens AG, 1000 Berlin und 8000 München | Messwertuebertragungssystem |
JPS60160239A (ja) * | 1984-01-30 | 1985-08-21 | Omron Tateisi Electronics Co | 信号伝送装置 |
US4754262A (en) * | 1984-03-01 | 1988-06-28 | Interactive Technologies, Inc. | Multiplexed alarm system |
JPH0782597B2 (ja) * | 1984-05-04 | 1995-09-06 | 富士電機株式会社 | 測定情報の時分割多重伝送システム |
US4788527A (en) * | 1984-09-17 | 1988-11-29 | Johansson Fritz H | Apparatus and method for device control using a two conductor power line |
JPS61201538A (ja) * | 1985-03-05 | 1986-09-06 | Meisei Electric Co Ltd | コ−ル式テレメ−タ方式 |
KR950005468B1 (ko) | 1987-05-09 | 1995-05-24 | 삼성전자주식회사 | 레이저 다이오드와 수광면이 넓어진 포토다이오드를 일체화시킨 반도체 소자의 제조방법 |
JPH03117998A (ja) * | 1989-09-29 | 1991-05-20 | Hitachi Cable Ltd | テレメータ伝送方式 |
US5252967A (en) * | 1990-05-25 | 1993-10-12 | Schlumberger Industries, Inc. | Reader/programmer for two and three wire utility data communications system |
JP3158581B2 (ja) | 1991-12-20 | 2001-04-23 | トヨタ自動車株式会社 | 電気自動車の制動制御装置 |
DE4227577C1 (de) * | 1992-08-20 | 1994-02-17 | Dornier Gmbh | Verfahren zur bidirektionalen Signalübertragung |
DE19822146A1 (de) * | 1997-05-26 | 1998-12-03 | Volkswagen Ag | Vorrichtung zur Kommunikation zwischen einer Vielzahl von elektrischen Komponenten |
DE10114504A1 (de) * | 2001-03-23 | 2002-10-02 | Bosch Gmbh Robert | Verfahren zur Übertragung von Daten von wenigstens einem Sensor zu einem Steuergerät |
JP3675740B2 (ja) * | 2001-07-11 | 2005-07-27 | 株式会社デンソー | 電源電力給電型通信線を有する通信装置 |
US7277414B2 (en) * | 2001-08-03 | 2007-10-02 | Honeywell International Inc. | Energy aware network management |
DE10248456A1 (de) * | 2001-10-19 | 2003-06-18 | Denso Corp | Fahrzeugkommunikationssystem |
-
2003
- 2003-09-15 DE DE10342625A patent/DE10342625A1/de not_active Withdrawn
-
2004
- 2004-07-22 WO PCT/DE2004/001605 patent/WO2005027072A2/de active Application Filing
- 2004-07-22 DE DE502004009594T patent/DE502004009594D1/de active Active
- 2004-07-22 JP JP2006500501A patent/JP4608481B2/ja active Active
- 2004-07-22 EP EP04762455A patent/EP1665194B1/de active Active
- 2004-07-22 ES ES04762455T patent/ES2325025T3/es active Active
- 2004-07-22 CN CNB2004800266527A patent/CN100442693C/zh active Active
- 2004-07-22 US US10/571,730 patent/US8106763B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2005027072A2 * |
Also Published As
Publication number | Publication date |
---|---|
ES2325025T3 (es) | 2009-08-24 |
US20070229306A1 (en) | 2007-10-04 |
DE502004009594D1 (de) | 2009-07-23 |
WO2005027072A2 (de) | 2005-03-24 |
US8106763B2 (en) | 2012-01-31 |
JP2006522380A (ja) | 2006-09-28 |
CN1853209A (zh) | 2006-10-25 |
JP4608481B2 (ja) | 2011-01-12 |
WO2005027072A3 (de) | 2005-06-23 |
CN100442693C (zh) | 2008-12-10 |
DE10342625A1 (de) | 2005-04-14 |
EP1665194B1 (de) | 2009-06-10 |
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