CN101868736A - Adopt the two-wire digital ultrasonic sensor of bi-directional power line communication - Google Patents
Adopt the two-wire digital ultrasonic sensor of bi-directional power line communication Download PDFInfo
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- CN101868736A CN101868736A CN200880117335A CN200880117335A CN101868736A CN 101868736 A CN101868736 A CN 101868736A CN 200880117335 A CN200880117335 A CN 200880117335A CN 200880117335 A CN200880117335 A CN 200880117335A CN 101868736 A CN101868736 A CN 101868736A
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- power supply
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- host microcontroller
- order wire
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
- G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5458—Monitor sensor; Alarm systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
A kind of circuit arrangement with the host microcontroller that may be operably coupled to the sensor that is used for detected parameters.Described sensor and microcontroller are connected to power supply, wherein, connect the microcontroller power lead between power supply and host microcontroller.Connect the power supply order wire between power supply, host microcontroller and sensor, wherein, described power supply order wire is to the sensor transmissions electric energy, and between sensor and host microcontroller transmit communications signals.
Description
The cross reference of related application
The application is the U.S. Patent application No.61/000 that submitted on October 23rd, 2007,091 PCT international application.Introduce for your guidance at this open text above-mentioned application.The application requires the U.S. Provisional Application No.60/000 of submission on October 23rd, 2007,091 rights and interests.
Technical field
The present invention relates to have the sensor control circuit of two incoming lines.
Background technology
Sensor circuit is adopted in automobile is used, thereby provides DATA REASONING for the designated parameter of being monitored.For example, for the purpose of the position of each valve or actuator in definite normal course of operation sensor is used for engine components.In addition, also have by the way of combined sensor measurement such as the environmental factor of the outer object of temperature, light and vehicle.Most of sensor circuits utilize three lines to communicate by letter between sensor, microcontroller and power supply.For example, will adopt the power supply of two alignment microcontrollers and sensor unit.Adopt the 3rd line to communicate by letter with sensor unit.From saving manufacturing time, save manufacturing equipment and relying on the position that adopts line still less and reduce the possibility of equipment failure, we wish to reduce line and the quantity that is connected.Thereby wishing to develop need be less than the sensor circuit of three lines between microcontroller and sensor.
Summary of the invention
The present invention relates to a kind of circuit arrangement, it has the host microcontroller that may be operably coupled to the sensor that is used for detected parameters.Described sensor and microcontroller are connected to power supply, wherein, the microcontroller power lead are connected between described power supply and the described host microcontroller.Connect the power supply order wire between power supply, host microcontroller and sensor, wherein, described power supply order wire is to the sensor transmissions electric energy, and between described sensor and described host microcontroller transmit communications signals.
By detailed description provided below, other suitable application areas of the present invention will become apparent.Indicated the preferred embodiments of the present invention although should be appreciated that described detailed description and concrete example, it only is intended to realize illustrative purposes, but not is intended to limit the scope of the invention.
Description of drawings
By embodiment and accompanying drawing, the present invention can access more fully and understand, wherein:
Fig. 1 is the synoptic diagram of two-wire transmitter circuit;
It is 1 o'clock the curve map with respect to the voltage of time that Fig. 2 a shows logic signal value;
It is 0 o'clock the curve map with respect to the voltage of time that Fig. 2 b shows logic signal value;
Fig. 3 shows the illustrated example at the communication plan of described circuit arrangement;
Fig. 4 is the skeleton view that is combined in the sensor circuit in the two-wire ultrasonic sensor layout; And
Fig. 5 shows the skeleton view of the vehicle with a plurality of ultrasonic sensors that are connected to vehicle.
Embodiment
Following description of a preferred embodiment is in fact exemplary, is intended to limit the present invention, its application or use absolutely not.
Fig. 1 is the synoptic diagram with circuit arrangement 10 of host microcontroller 12, power supply 14 and sensor 16.In one embodiment of the invention, circuit arrangement 10 is two-wire numeral or the active environmental sensors that are used for the object of sensing exterior vehicle environment.Sensor 16 can be but be not limited to traffic environment sensor, weather sensor and object sensor.But scope of the present invention is not limited to environmental sensor or digital technology.Sensor 16 be utilize sonar or sonic detection object whether to exist and with the ultrasonic type sensor of the distance of object.A specific embodiment of the present invention shown in Figure 5 shows the sensor that is used as active ultrasound wave parking aiding sensors.But, sensor 16 be any kind be used to detect designated parameter, can adopt the sensor of two-wire technical work all to be in the scope of the present invention simultaneously.The two all is connected to power supply 14 sensor 16 and microcontroller 12.In this concrete circuit arrangement 10, power supply 14 has the power level such as 5 volts of direct supplys of battery.With regard to this circuit arrangement 10, the use of 5 volts of power supplys provides the significant advantage with respect to the layout of other 12 volts of power supplys of common employing.Adopt 5 volts of power supplys to make described circuit arrangement can be connected to and the identical power supply of vehicle electric control module that adopts the 5V power supply equally.But, also can have the dissimilar power supply that different voltages are provided according to the concrete needs of using.For example, can use the voltage source of any kind, still, we imagine 6 volts and 12 volts of power supplys and are in the scope of the present invention.
Power supply 14 is connected to microcontroller 12 by microcontroller power lead 18.Sensor 16 receives electric energy by sensor power supply line 20, and sensor power supply line 20 is connected to power supply order wire 22, power supply order wire 22 be connected to power supply 14 and microcontroller 12 the two.Power supply order wire 22 electric energy transmittings and bit line coding, wherein, the bit line coding should be received by sensor, is sent to microcontroller 12 again.
The diode 26 that sensor power supply line 20 has the capacitor 24 that is arranged on the sensor power supply line 20 and capacitor 24 and sensor power supply line 20 and power supply order wire 22 are separated.Diode 26 allows electric energy to flow to capacitor 24 from power supply 14, but does not allow electric energy along flowing from the direction of capacitor 24 through diode 26.Capacitor 24 is configured between the voltage decrement phase to sensor 16 power supplies.Although this specific embodiment of the present invention has been described employing capacitor 24, also can adopt other suitable energy storage devices, for example, battery, switched capacitor or inductor.
Be connected high impedance line 28 at power supply 14 with power supply order wire 22, this is an energy line with high-impedance resistor 30.Low-impedance line 32 with low-impedance resistor also is connected to power supply 14.Low-impedance resistor 34 has the resistivity lower than high-impedance resistor 30.Low-impedance line 32 and high impedance line 28 parallel runnings.But low-impedance line 32 has the impedance switch 36 that is subjected to host microcontroller 12 controls.When impedance switch 36 was opened, higher electric current was by power supply order wire 22 and arrive at capacitor 24.When impedance switch 36 was closed, lower electric current will be by power supply order wire 22.In power supply order wire 22, exist just during this of lower electric current, can adopt this line transmit communications signals between host microcontroller 12 and sensor 16.
The operation of circuit arrangement 10 is subjected to the control of the signal of host microcontroller 12 generations.In the process of sensor 16 initial start-ups, host microcontroller 12 will make impedance switch 36 open, and allow more electric energy to pass through power supply order wire 22 like this and flow, thereby to capacitor 24 chargings.Communication signal is being transferred in the process of sensor 16, closing impedance switch 36,, and allowing power supply order wire 22 transmit communications signals so that stop power supply.Signal of communication is created between host microcontroller 12 and the sensor 16 by the input and output port that is connected to micro-controller communications line 38 and sensor communication line 46.But sensor 16 may run into the power swing or the voltage drop that may damage or destroy sensor function that is caused by communication.The present invention provides voltage to solve this problem by adopting capacitor 24 in power attenuation or fluctuating period.
Fig. 2 a and 2b show two curve maps, and the two all is used for the data line bit coding of circuit arrangement 10 is illustrated.Fig. 2 a shows at the position coding that logical value is made as at 1 o'clock, and Fig. 2 b shows at the position coding that logical value is made as at 0 o'clock.Data line bit coding shown in Fig. 2 a and the 2b is different from the circuit arrangement of other ultrasonic sensors, because when logical value is in 0, having 5 volts the pulse rather than the voltage that continue 50 microseconds is 0.When logical value is 1, exist 5 deep-sited pulses that continue 100 microseconds to dash.With logical value is that 0 o'clock magnitude of voltage will be compared for 0 other system, is also can receive voltage charging at 0 o'clock even it allows capacitor in logical value.Even its also allow logical value be 0 o'clock also can be by power supply order wire 22 transport communication data consistently.
Fig. 3 shows at each stage microcontroller 12 of working sensor and the example of the communication plan signal between the sensor 16.
Fig. 4 is combined in the skeleton view that the two-wire ultrasonic sensor is arranged the sensor circuit in 100.Ultrasonic sensor 102 has the power supply order wire 104 that extends to circuit box 106, and circuit box 106 contains circuit arrangement shown in Figure 1 10.Power connector 108 has from connector and extends to two lines in the circuit box 106.One of described line provides electric energy to host microcontroller, and another alignment circuit arrangement 10 provides electric energy, and it leads to power supply order wire 104.
Fig. 5 shows vehicle 200, and it has a plurality of ultrasonic or traffic environment sensor 202 of the bumper 204 that is connected to vehicle 200.In this embodiment, adopt a plurality of ultrasonic sensor 202 as proximity transducer, thereby the driver to vehicle 200 give a warning when having object in the path of vehicle 200 when vehicle falls back.The traffic environment sensor that illustrates on the vehicle 200 is mainly used in the path of determining vehicle 200 when reversing whether have object.The other field that also traffic environment sensor 202 can be used for vehicle is to provide near detecting.For example, such sensor can be used for preventing colliding, stop auxiliary, safety and other suitable hope detect the purposes of the object of outside vehicle environment.
Is exemplary to explanation of the present invention from essence, thereby means that the variation that does not break away from aim of the present invention all falls within the scope of the present invention.Should not think that such variation deviates from the spirit and scope of the present invention.
Claims (24)
1. circuit arrangement that is used for active traffic environment sensor comprises:
Host microcontroller;
Be configured to be used for the sensor of active traffic environment sensing;
Power supply;
Be connected to the microcontroller power lead of described host microcontroller, it receives the electric energy from described power supply and described host microcontroller; And
Be connected in the power supply order wire between described power supply, described host microcontroller and the described sensor, wherein, described power supply order wire is described sensor transmissions electric energy, and between described host microcontroller and described sensor transmit communications signals.
2. the circuit arrangement that is used for active traffic environment sensor according to claim 1 also comprises:
Be connected to the low-impedance line of described power supply, described low-impedance line has resistor formed thereon;
Be connected to described power supply, have the high impedance line of resistor formed thereon, wherein, the described resistor of described high impedance line has the resistivity bigger than the resistor of described low-impedance line.
3. the circuit arrangement that is used for active traffic environment sensor according to claim 2, wherein, described power supply is 5 volts of direct supplys.
4. the circuit arrangement that is used for active traffic environment sensor according to claim 2, also comprise the impedance switch that is formed on the described low-impedance line, wherein, described impedance switch is subjected to the control of described host microcontroller, with flowing of the electric energy of control by described low-impedance line.
5. the circuit arrangement that is used for active traffic environment sensor according to claim 1 also comprises the capacitor that may be operably coupled to the power supply order wire between described sensor and the described host microcontroller.
6. the circuit arrangement that is used for active traffic environment sensor according to claim 5 also comprises the diode that may be operably coupled to the described power supply order wire between described capacitor, described host microcontroller and the described power supply.
7. the circuit arrangement that is used for active traffic environment sensor according to claim 1 also comprises the host microcontroller output terminal that is connected to described host microcontroller; And
Be connected to described sensor from the sensor input end, wherein, describedly receive signal from described host microcontroller output terminal from the sensor input end.
8. the circuit arrangement that is used for active traffic environment sensor according to claim 7 also comprises:
Be connected to described sensor be used to export from the signal of described sensor from the sensor output terminal; And
What be connected to described host microcontroller is used to receive host microcontroller input end from described signal from the sensor output terminal.
9. circuit arrangement that is used for active traffic environment sensor comprises:
Host microcontroller;
Be arranged to the sensor of active traffic environment sensing, it has communication port and sensor power supply line;
Power supply;
Be connected in the microcontroller power lead between described power supply and the described host microcontroller;
Be connected in the power supply order wire between described power supply, described host microcontroller and the described sensor, wherein, described sensor power supply line comes out from described power supply order wire branch;
Capacitor on the described sensor power supply line; And
Diode between described capacitor and the described power supply order wire.
10. the circuit arrangement that is used for active traffic environment sensor according to claim 9 also comprises:
Be connected to the low-impedance line of described power supply, described low-impedance line has resistor formed thereon;
Be connected to described power supply, have the high impedance line of resistor formed thereon, wherein, the described resistor of described high impedance line has the resistivity bigger than the resistor of described low-impedance line, described low-impedance line and the setting of described high impedance line parallel and described power supply is connected to described power supply order wire.
11. the circuit arrangement that is used for active traffic environment sensor according to claim 10, wherein, described power supply is 5 volts of direct supplys.
12. the circuit arrangement that is used for active traffic environment sensor according to claim 10, also comprise the impedance switch that is formed on the described low-impedance line, wherein, described impedance switch is subjected to described host microcontroller control, and receives from the described impedance switch of the opening and closing of described host microcontroller with the order of flowing of control by the electric energy of described low-impedance line.
13. the circuit arrangement that is used for active traffic environment sensor according to claim 9 also comprises the host microcontroller output terminal that is connected to described host microcontroller, wherein, described host microcontroller output terminal is configured to send signal to described power supply order wire; And
Be connected to described sensor from the sensor input end, it is used for receiving signal from described host microcontroller output terminal by described power supply order wire.
14. the circuit arrangement that is used for active traffic environment sensor according to claim 13, also comprise be connected to described power supply order wire and described sensor from the sensor output terminal, its output from the signal of described sensor to described power supply order wire; And
Be connected to the host microcontroller input end of described host microcontroller, it is used to receive the described signal from described power supply order wire.
15. a circuit arrangement that is used for active traffic environment sensor comprises:
Host microcontroller;
Be arranged to the ultrasonic sensor of active traffic environment sensing, it has communication port and sensor power supply line;
Power supply;
Be connected in the microcontroller power lead between described power supply and the described host microcontroller;
Be connected in the power supply order wire between described power supply, described host microcontroller and the described ultrasonic sensor, wherein, described sensor power supply line comes out from described power supply order wire branch;
Capacitor on the described sensor power supply line;
Be arranged at the diode between described capacitor and the described power supply order wire;
Be connected to the low-impedance line of described power supply, described low-impedance line has resistor formed thereon;
Be connected to described power supply, have the high impedance line of resistor formed thereon, wherein, the described resistor of described high impedance line has the resistivity bigger than the resistor of described low-impedance line;
Be positioned at the impedance switch on the described low-impedance line, it is configured to receive the control signal from described host microcontroller, and wherein, described host microcontroller is controlled flowing by the electric energy of described low-impedance line;
Be connected to the host microcontroller output terminal of described host microcontroller and described power supply order wire;
Be connected to described sensor and described power supply order wire from the sensor input end, wherein, describedly receive the signal that generates from described host microcontroller by described host microcontroller output terminal from the sensor input end, wherein, adopt described power supply order wire to transfer to described signal described from described host microcontroller output terminal from the sensor input end;
Be connected to described power supply order wire and described sensor from the sensor output terminal;
Be connected to the host microcontroller input end of described power supply order wire and described host microcontroller, wherein, transfer to described host microcontroller input end by the described signal that will generate from described sensor by described power supply order wire, thereby allow described signal is transferred to described host microcontroller from the sensor output terminal.
16. the circuit arrangement that is used for active traffic environment sensor according to claim 15, also comprise the host microcontroller output switch that is used to control from the transmission of the signal of described host microcontroller output terminal, and be connected to described from the sensor output terminal be used to control from the transmission of the signal of described sensor from sensing switch.
17. a ultrasonic sensor comprises:
Can send and receive the ultrasonic sensor of sound wave with inspected object;
Host microcontroller is used for to described sensor operation and gives an order and be used for the signal that Collection and analysis is received from described sensor;
Power supply;
Be connected to the host microcontroller power lead of described power supply; And
Be connected in the power supply order wire between described power supply, described sensor and the described host microcontroller, wherein, described power supply order wire receives the signal of communication that comes from the electric energy of described power supply and come from described host microcontroller or described sensor.
18. ultrasonic sensor according to claim 17 also comprises the diode that described power supply order wire and sensor power supply line are separated, wherein, described diode allows electric energy to flow to described sensor power supply line from described power supply order wire;
Be arranged at the capacitor between described diode and the described sensor, wherein, described capacitor stores and emit electric energy when the electric energy that is received from described power supply order wire is reduced under the predetermined value.
19. ultrasonic sensor according to claim 18, wherein, described signal of communication has value 0 or 1, wherein, in described signal of communication value is 1 o'clock, making the burst transmissions that is in power level by the about 100 μ s in described power supply order wire two ends, is 0 o'clock in described signal of communication value, by being in the about 50 μ s of described power supply order wire transmission signals of power level.
20. a traffic environment sensing is arranged, comprising:
Vehicle with one or more body panels;
Power supply;
A plurality of ultrasonic sensors, the sensor power supply line that each has communication port and may be operably coupled to described power supply, wherein, each described a plurality of ultrasonic sensor also comprises:
Host microcontroller;
Be connected in the microcontroller power lead between described power supply and the described host microcontroller;
Be connected in the power supply order wire between each in described power supply, described host microcontroller and the described a plurality of sensor, wherein, described sensor power supply line comes out from described power supply order wire branch;
Capacitor on the described sensor power supply line; And
Be arranged at the diode between described capacitor and the described power supply order wire.
21. traffic environment sensing according to claim 20 is arranged, is also comprised:
Be connected to the low-impedance line of described power supply, described low-impedance line has resistor formed thereon; And
Be connected to described power supply, have the high impedance line of resistor formed thereon, wherein, the described resistor of described high impedance line has the resistivity bigger than the described resistor of described low-impedance line.
22. traffic environment sensing according to claim 21 is arranged, is also comprised:
Be connected to the master controller output terminal of described master controller and described power supply order wire;
Be connected to described sensor and described power supply order wire from the sensor input end, wherein, describedly receive the signal that generates from described host microcontroller by described host microcontroller output terminal from the sensor input end, wherein, it is described from the sensor input end to adopt described power supply order wire to transfer to from the described signal of described host microcontroller output terminal;
Be connected to described power supply order wire and described sensor from the sensor output terminal; And
Be connected to the host microcontroller input end of described power supply order wire and described host microcontroller, wherein, transfer to described host microcontroller input end by the described signal that will generate from described sensor by described power supply order wire, thereby allow described signal is transferred to described host microcontroller from the sensor output terminal.
23. traffic environment sensing according to claim 22 is arranged, also comprise the host microcontroller output switch that is used to control from the transmission of the signal of described host microcontroller output terminal, and be connected to described from the sensor output terminal be used to control from the transmission of the signal of described sensor from sensing switch.
24. traffic environment sensing according to claim 20 arranges that wherein, described a plurality of ultrasonic sensors are digital traffic environment sensors.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9107P | 2007-10-23 | 2007-10-23 | |
| US61/000,091 | 2007-10-23 | ||
| PCT/CA2008/001862 WO2009052616A1 (en) | 2007-10-23 | 2008-10-23 | Two wire digital ultrasonic sensor using bi-directional power line communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101868736A true CN101868736A (en) | 2010-10-20 |
Family
ID=40579001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880117335A Pending CN101868736A (en) | 2007-10-23 | 2008-10-23 | Adopt the two-wire digital ultrasonic sensor of bi-directional power line communication |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2215499A4 (en) |
| CN (1) | CN101868736A (en) |
| BR (1) | BRPI0818879A2 (en) |
| WO (1) | WO2009052616A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147264A (en) * | 2019-12-23 | 2020-05-12 | 上海申矽凌微电子科技有限公司 | Two-wire sensor communication device and method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010044991A1 (en) | 2010-09-10 | 2012-03-15 | Valeo Schalter Und Sensoren Gmbh | Method for transferring data between environment sensors for detecting motor car-external objects, involves transmitting data with different information between environment sensors and control device over respective electric lines |
| DE102011121463A1 (en) | 2011-12-17 | 2013-06-20 | Valeo Schalter Und Sensoren Gmbh | Method for providing communication between ultrasonic sensor and control unit of parking assistance system of passenger car, involves selecting amplitude value based on information transmitted between sensor and control device |
| DE102012017368A1 (en) | 2012-09-01 | 2014-03-06 | Valeo Schalter Und Sensoren Gmbh | Method for communication between ultrasonic sensor and control unit of diver assistance device in motor vehicle, involves transmitting trigger impulse from control unit to sensor, by which sensor is actuated to initiate measurement process |
| DE102017115979A1 (en) | 2017-07-17 | 2019-01-17 | Valeo Schalter Und Sensoren Gmbh | Sensor device for a motor vehicle with transmission of communication signals via a supply line, driver assistance system, motor vehicle and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6229434B1 (en) * | 1999-03-04 | 2001-05-08 | Gentex Corporation | Vehicle communication system |
| GB2366385A (en) * | 2000-09-01 | 2002-03-06 | Ab Automotive Electronics Ltd | Controller for a capacitive sensor |
| DE10114504A1 (en) * | 2001-03-23 | 2002-10-02 | Bosch Gmbh Robert | Method for transmitting data from sensor to control device e.g. in motor vehicle, involves control device checking line and/or power uptake of at least one sensor, before sensor identification |
| US7023215B2 (en) * | 2003-04-22 | 2006-04-04 | Touchsensor Technologies Llc | Field effect sensor two wire interconnect method and apparatus |
| JP4013924B2 (en) * | 2004-07-06 | 2007-11-28 | 株式会社デンソー | Vehicle periphery monitoring device |
| JP4575069B2 (en) * | 2004-07-30 | 2010-11-04 | 矢崎総業株式会社 | Vehicle power superimposed telecommunications system |
-
2008
- 2008-10-23 BR BRPI0818879 patent/BRPI0818879A2/en not_active IP Right Cessation
- 2008-10-23 WO PCT/CA2008/001862 patent/WO2009052616A1/en active Application Filing
- 2008-10-23 CN CN200880117335A patent/CN101868736A/en active Pending
- 2008-10-23 EP EP08843123A patent/EP2215499A4/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147264A (en) * | 2019-12-23 | 2020-05-12 | 上海申矽凌微电子科技有限公司 | Two-wire sensor communication device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2215499A4 (en) | 2013-01-02 |
| EP2215499A1 (en) | 2010-08-11 |
| BRPI0818879A2 (en) | 2015-05-05 |
| WO2009052616A1 (en) | 2009-04-30 |
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Application publication date: 20101020 |