EP3967004A1 - Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage medium - Google Patents
Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage mediumInfo
- Publication number
- EP3967004A1 EP3967004A1 EP20724499.7A EP20724499A EP3967004A1 EP 3967004 A1 EP3967004 A1 EP 3967004A1 EP 20724499 A EP20724499 A EP 20724499A EP 3967004 A1 EP3967004 A1 EP 3967004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- hub
- data
- sensors
- designed
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000004891 communication Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011423 initialization method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40032—Details regarding a bus interface enhancer
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4604—LAN interconnection over a backbone network, e.g. Internet, Frame Relay
- H04L12/462—LAN interconnection over a bridge based backbone
- H04L12/4625—Single bridge functionality, e.g. connection of two networks over a single bridge
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/4026—Bus for use in automation systems
Definitions
- Sensor hub Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage medium
- the invention relates to a sensor hub, a sensor system, a method for transmitting sensor signals and a computer-readable storage medium.
- Control cabinets are often equipped with a variety of sensors to monitor the environment of sensitive and expensive equipment in the control cabinet.
- Temperature sensors or humidity sensors are provided for monitoring.
- production systems are also equipped with a large number of sensors to ensure the function of the production systems.
- Sensors are usually connected to a user module via an analog or digital interface, e.g. a PLC, which reads the sensors regularly.
- analog or digital interface e.g. a PLC
- digital sensors are 1-bit sensors that do not transmit measured values, but only states (e.g. on or off) in the form of bits.
- Analog sensors provide measured values, but no information about themselves. This means that analog sensors cannot be addressed and cannot be identified if several sensors transmit their data via a single connection, e.g. a bus.
- This arrangement has the disadvantage that complex cabling has to be laid out of the switch cabinet or from the production system to the user module (higher-level control unit).
- An IO-Link data interface for example, can be provided between the sensor hub and the user module.
- IO-Link master In the case of an IO-Link data interface, a so-called IO-Link master must be connected between the sensor hub and the user module, which handles communication between the sensor hub and the user module.
- IO-Link point-to-point connection This is usually a fieldbus connection to the user module.
- analog data In the case of a direct connection from analog sensors to the user module, it is disadvantageous that the analog data must be converted into useful data, such as temperature, for example. Furthermore, in the case of binary sensors in the prior art, it cannot be recognized which sensor is connected to which connection of a sensor hub. With analog sensors, the analog data must be converted into useful data, such as temperature, for example. Furthermore, in the case of binary sensors in the prior art, it cannot be recognized which sensor is connected to which connection of a sensor hub. With analog sensors, the
- a corresponding coding can be used to specify which sensor may be connected to which port, since the analog sensors themselves cannot provide any information about type and type.
- a sensor hub comprising:
- At least one sensor communication device which is designed to receive sensor signals from at least two sensors
- Sensor data is formed using the sensor signals
- a transmitting device which is designed to transmit the sensor data to a user device via a single communication medium, the sensor data specifying addresses which are each assigned to one of the at least two sensors.
- a core of the invention is that at least two sensors can be addressed via a sensor hub. This means that the sensors can also be individually identified by a device connected to the sensor hub. This is achieved by forwarding the addresses as part of the sensor data. The cabling is simplified because the sensor data is transferred to a single
- the sensors send the sensor signals to the sensor hub via an I 2 C bus.
- the computing device can be designed to convert the sensor signals into an IO-Link compatible data format and to aggregate them in this data format, the only transmission medium being able to be formed by an IO-Link compatible transmission medium.
- At least two sensors it is easy to determine which sensors
- the computing device can be designed to generate voltage values, in particular digital ones, to generate the sensor data
- the sensor signals can indicate measured sensor values.
- sensor measured values can mean that digitally coded values are indicated by the sensor signals.
- Sensor readings can provide a series of metrics measured on a continuous scale.
- the sensor signals from different predefined sensors can therefore be received and processed by the sensor hub.
- the sensor signals can indicate a temperature, an air humidity, a fine dust specification, a vibration specification, a gas specification and / or other physical or chemical measured variables.
- Sensor communication device be designed to be connected to at least one field bus system for communication with the at least two sensors.
- the at least two sensors can therefore be connected to the sensor hub via a field bus system.
- a field bus system For example, the well-known I 2 C-BUS can be used.
- the field bus system can be designed with four wires, for example. It is also conceivable that a number of sensors can be connected via one sensor communication device.
- a field bus system can be used here, which can be designed to address several participants, ie sensors, via a single transmission medium. This provides a very flexible solution with which various sensors can be connected to the sensor hub.
- the transmitting device can be designed to transmit the sensor data periodically.
- the sensor data can be within a
- Transmission period comprise a data packet, wherein the data packet can specify a transmission channel, a sensor status, a sensor type and / or at least one sensor measurement value.
- the sensor data can comprise a data packet within a transmission period, the data packet
- the computing device can be designed to send a sensor address to a sensor using the at least one sensor communication device.
- the sensor hub can be designed to send a sensor address via the at least one sensor communication device.
- the computing device can be designed to process a response message received from a sensor via the at least one sensor communication device in response to a sensor address sent and to determine the type of sensor using the response message.
- the sensor can therefore be designed to send a response message to the sensor hub in response to receiving a sensor address.
- the sensor can be designed to send a response message to the sensor hub if the received address corresponds to a sensor address stored on the sensor. If the address sent by the sensor hub does not correspond to the sensor address stored on the sensor, the sensor can be designed not to send a response message to the sensor hub.
- the sensor hub can thus determine whether and, if so, which type of sensor is connected to the sensor hub via the at least one sensor communication device. This communication can also be used to check the function of the sensor will. The response message can then be interpreted by the sensor hub as a "life signal".
- the computing device can be designed to determine that no sensor is connected to the at least one
- Sensor communication device is connected if no response message is received in response to a / the sent sensor address.
- Sensor communication device is connected, is accordingly implemented by the computing device. Overall, a very efficient embodiment is thus specified with which it can be determined what type and whether a sensor is connected to the at least one sensor communication device.
- the object is also achieved in particular by a sensor system
- At least one sensor which is designed to be communicatively connectable to the sensor hub, in particular designed to be connected;
- a user device which is designed to be communicatively connected to the sensor hub via a single communication medium, in particular is connected.
- the at least one sensor can be used as a
- Temperature sensor a humidity sensor, a gas sensor and / or be designed as a particle sensor, etc.
- the object is also achieved in particular by a method for
- Transferring sensor data comprising the following steps: - Receiving sensor signals from at least two sensors;
- the sensor data specifying addresses which are each assigned to one of the at least two sensors;
- the method can include:
- the object is also achieved in particular by a computer-readable storage medium which contains instructions which cause at least one processor to implement a method as described above when the instructions are executed by the at least one processor.
- FIG. 1 a schematic view of a sensor system
- FIG. 2 a schematic representation of a sensor stroke
- FIG. 3 a flow chart of a method for initializing on one
- FIG. 4 an illustration of a data packet in a first
- FIG. 5 an illustration of a data packet in a second
- Figure 1 shows a schematic view of a sensor system 1, the one
- Production system 10, a sensor hub 20 and a user device 5 Production system 10, a sensor hub 20 and a user device 5.
- a gas sensor 11, a particulate matter sensor 12, a first temperature sensor 13 and a second temperature sensor 14 are also located in or on the
- Production plant 10 arranged further components not shown, such as e.g. a programmable control unit (PLC).
- PLC programmable control unit
- sensors of one type e.g. humidity sensors only.
- the sensors 11, 12, 13, 14 are each connected to the sensor hub 20 via field bus connections 2, for example an I 2 C bus connection.
- I 2 C-BUS One possibility of communication, which is also used by the I 2 C-BUS, is characterized by the fact that a four-wire connection is used, one wire being used for the transmission of a clock signal and the second wire as a data line (3/4 for the operating voltage of the sensor). Both lines are connected to a supply voltage via pull-up resistors.
- the field bus 2 is designed as a master-slave field bus. That means one
- the sensor hub 20 is designed as a master and the sensors 11, 12, 13, 14 are each designed as a slave.
- the sensors 11, 12, 13, 14 connected via the field bus 2 can be addressed by the sensor hub 20 via addresses. This means that the master sends an address to the sensors 11, 12, 13, 14 via the fieldbus 2 and the sensor 11, 12, 13, 14, to which the address is to be assigned, replies with
- the sensors 11, 12, 13, 14 are designed to receive their measured values as
- the sensor hub 20 To transmit sensor signals to the sensor hub 20.
- the sensor hub 20 is described in detail in connection with FIG.
- the sensor hub 20 is designed to summarize the received sensor signals from the sensors 11, 12, 13, 14 and send them as a data packet to the connected
- a point-to-point connection is preferably used between the sensor hub 20 and the user device 5, for example an IO-Link connection 3.
- a point-to-point connection is characterized by the fact that no other devices are connected between two connected devices. Thus, with a point-to-point connection, only one other device can be connected to one connection of a device.
- Embodiment of Figure 1 possible to determine whether a temperature value comes from the first temperature sensor 13 or from the second temperature sensor 14. Since the position of the sensors is usually known, if the temperature rises, it can also be determined directly where this rise in temperature is present in the production system 10, so that a fault can be localized quickly and reliably.
- Figure 2 shows the sensor hub 20 in a schematic representation.
- Sensor hub 20 has four ports or terminals or connections 21, 22, 23, 24 to which sensors 11, 12, 13, 14 are connected.
- exactly one connection 21, 22, 23, 24 is provided for a sensor 11, 12, 13, 14.
- connections 21, 22, 23, 24 are also referred to as sensor communication devices.
- the sensors 11, 12, 13, 14 each transmit sensor signals 27, 27 ', 27 ", 27"' via the connections 21, 22, 23, 24 to the computing device 25
- Computing device 25 is designed to receive and process sensor signals 27, 27 ', 27 ", 27'". For example, the computing device 25 is designed to calculate a temperature from voltage values 27 sent by a temperature sensor 13. The computing device 25 can be preconfigured accordingly so that it is possible to assign a corresponding temperature to a digital data packet.
- the computing device 25 may carry out further calculations, e.g. determining an average over a certain time interval, e.g. 24 hours.
- the computing device is designed to form a virtual sensor. That means that the
- Computing device 25 is designed to process the values from at least one sensor 11, 12, 13, 14 and send them as sensor data to the
- the computing device 25 may further comprise a memory device in which e.g. the sensor data are buffered.
- the addresses of the sensors 11, 12, 13, 14 can also be stored there.
- the processed sensor signals 27, 27 ′, 27 ′′, 27 ′ ′′ are additionally aggregated as sensor data 28 by the computing device 5. That means that
- Sensor signals 27, 27 ', 27 ", 27'” can be sent on together.
- the sensor data 28 are sent to a transceiver 26, which the
- Sensor data 28 transmits to the user device 5.
- the transceiver 26 can also be referred to as a transmitting device.
- FIG. 3 is a flow diagram that illustrates an initialization method 300 for the sensors 11, 12, 13, 14.
- the sensor hub 20 is switched on and thus supplied with power. It is also checked whether all sensors 11, 12, 13, 14 known to the sensor hub 20 have already been initialized. For this purpose, the sensor hub 20 has a memory device in which a plurality of sensor addresses is stored. A sensor type is assigned to each address and an indication of whether the associated sensor 11, 12, 13, 14 has already been initialized.
- test step 302 computing device 25 of sensor hub 20 checks whether at least one address has not yet been initialized. If this is the case, the method continues with sending step 305. If all sensors 11, 12, 13, 14 have already been initialized, the method is ended with end step 308.
- a sensor address 304 that has not yet been initialized is read from memory device 303.
- the address 304 is in
- Sending step 305 sent via a sensor communication device 21, 22, 23, 24.
- step 306 If no response to the sending of address 304 is received in step 306, the method continues with step 301.
- FIGS. 4 and 5 illustrate two possible data formats how the sensor data 7, 8 can be transmitted from the sensor hub 20 to the user device 5.
- FIG. 4 shows an exemplary embodiment in which the sensor data 7 for a channel, ie for a sensor communication device or a connection 21, 22, 23, 24, specify a status S1, a sensor type TI and useful data D1-D4.
- the Status S1 indicates which data are sent as user data D1-D4.
- the status S1 can indicate that temperature data are encoded as useful data D1-D4.
- the sensor type Dl indicates what kind of sensor it is, for example a temperature sensor or a humidity sensor.
- the sensor data 7 can also contain the data for all channels, i.e.
- the sensor data 7 accordingly include the data of the figure
- the embodiment described has the advantage that little process data has to be transmitted, since the data required for a sensor can always be transmitted in a compact manner.
- a disadvantage is that the status S1 has to be evaluated in order to determine what kind of data is being transmitted.
- FIG. 5 shows exemplary sensor data 8 which include fields for all possible sensors 11, 12, 13, 14 for each channel. This means that data fields for all possible sensor types T1-T4 are provided for a first channel. Thus, FIG. 5 shows data fields for sensor types TI, T2, T3 or T4. It is provided in the embodiment shown that each sensor type T1-T4 exactly one
- Data field for user data D1-D4 is assigned.
- the definition of the sensor types T1-T4 in the sensor data 8 is defined so that it can be seen from the use of the data fields D1-D4 what type of data is involved. Is e.g. TI defined as a temperature sensor, it can be recognized from the use of the data field Dl with a value that the data in the data field Dl are temperature data of a
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019112230.9A DE102019112230A1 (en) | 2019-05-10 | 2019-05-10 | Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage medium |
PCT/EP2020/062687 WO2020229292A1 (en) | 2019-05-10 | 2020-05-07 | Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage medium |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3967004A1 true EP3967004A1 (en) | 2022-03-16 |
Family
ID=70613793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20724499.7A Withdrawn EP3967004A1 (en) | 2019-05-10 | 2020-05-07 | Sensor hub, sensor system, method for transmitting sensor signals and computer-readable storage medium |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220247596A1 (en) |
EP (1) | EP3967004A1 (en) |
CN (1) | CN113812120B (en) |
DE (1) | DE102019112230A1 (en) |
WO (1) | WO2020229292A1 (en) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1474662B1 (en) * | 2002-01-18 | 2011-07-27 | SPM Instrument AB | Analysis systems for analysing the condition of a machine |
EP2658434B1 (en) * | 2010-12-30 | 2015-12-02 | AR Innovation AG | Method for configuring a motion sensor as well as a configurable motion sensor and a system for configuring such a motion sensor |
DE102012014682B4 (en) * | 2012-05-29 | 2017-02-09 | Balluff Gmbh | fieldbus system |
US9133019B2 (en) * | 2013-12-03 | 2015-09-15 | Barry John McCleland | Sensor probe and related systems and methods |
CN104155891B (en) * | 2014-07-03 | 2017-02-01 | 华南理工大学 | I<2>C-based networked transmitter and communication implementation method thereof |
DE102014119065B4 (en) * | 2014-12-18 | 2020-10-29 | Phoenix Contact Gmbh & Co. Kg | Function connection unit with a service module |
US10228740B2 (en) * | 2015-06-24 | 2019-03-12 | Intel Corporation | Sensor device and method |
KR102569400B1 (en) * | 2015-07-10 | 2023-08-24 | 삼성전자주식회사 | Hub apparatus and Method for providing service thereof |
CN105302274B (en) * | 2015-09-22 | 2018-12-04 | 广东欧珀移动通信有限公司 | A kind of sensor control method and device |
US10079650B2 (en) * | 2015-12-04 | 2018-09-18 | Infineon Technologies Ag | Robust high speed sensor interface for remote sensors |
JP2017163508A (en) * | 2016-03-11 | 2017-09-14 | オムロン株式会社 | Master slave control system, method for controlling master slave control system, information processing program, and recording medium |
JP6465053B2 (en) * | 2016-03-14 | 2019-02-06 | オムロン株式会社 | Slave device, slave device control method, information processing program, and recording medium |
JP6717026B2 (en) * | 2016-04-19 | 2020-07-01 | オムロン株式会社 | Control device, relay device, control device control method, relay device control method, control program, and recording medium |
DE102016115009A1 (en) * | 2016-08-12 | 2018-02-15 | Phoenix Contact Gmbh & Co. Kg | Function Terminal Unit |
DE102017103117A1 (en) * | 2017-02-16 | 2018-08-16 | Valeo Schalter Und Sensoren Gmbh | Method for operating a sensor arrangement based on a DSI protocol in a motor vehicle and a corresponding sensor arrangement in a motor vehicle |
DE102017113807A1 (en) * | 2017-06-22 | 2018-12-27 | Prüftechnik Dieter Busch AG | SYSTEM AND METHOD FOR REMOTE SENSING OF MACHINE MONITORING SENSORS |
US10395515B2 (en) * | 2017-12-28 | 2019-08-27 | Intel Corporation | Sensor aggregation and virtual sensors |
CN108316975A (en) * | 2018-02-06 | 2018-07-24 | 天地(常州)自动化股份有限公司 | A kind of coal mine safety monitoring system sensor address auto-allocation method |
-
2019
- 2019-05-10 DE DE102019112230.9A patent/DE102019112230A1/en active Pending
-
2020
- 2020-05-07 WO PCT/EP2020/062687 patent/WO2020229292A1/en unknown
- 2020-05-07 US US17/609,858 patent/US20220247596A1/en not_active Abandoned
- 2020-05-07 CN CN202080035064.9A patent/CN113812120B/en active Active
- 2020-05-07 EP EP20724499.7A patent/EP3967004A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102019112230A1 (en) | 2020-11-12 |
US20220247596A1 (en) | 2022-08-04 |
CN113812120A (en) | 2021-12-17 |
WO2020229292A1 (en) | 2020-11-19 |
CN113812120B (en) | 2023-10-10 |
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