EP2263315A2 - Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation - Google Patents

Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation

Info

Publication number
EP2263315A2
EP2263315A2 EP09706009A EP09706009A EP2263315A2 EP 2263315 A2 EP2263315 A2 EP 2263315A2 EP 09706009 A EP09706009 A EP 09706009A EP 09706009 A EP09706009 A EP 09706009A EP 2263315 A2 EP2263315 A2 EP 2263315A2
Authority
EP
European Patent Office
Prior art keywords
circuit
client
server
input
signal
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Withdrawn
Application number
EP09706009A
Other languages
German (de)
English (en)
Inventor
Peter Fasshauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microchip Technology Germany GmbH
Original Assignee
Ident Technology AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE200810006969 external-priority patent/DE102008006969A1/de
Application filed by Ident Technology AG filed Critical Ident Technology AG
Publication of EP2263315A2 publication Critical patent/EP2263315A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/94084—Transmission of parameters among sensors or between sensor and remote station
    • H03K2217/94089—Wireless transmission
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960755—Constructional details of capacitive touch and proximity switches
    • H03K2217/960775—Emitter-receiver or "fringe" type detection, i.e. one or more field emitting electrodes and corresponding one or more receiving electrodes

Definitions

  • the invention is directed to an electrical circuit arrangement and to a method for collecting and transmitting switching signals, in particular for applications in connection with electrical appliances.
  • the invention has for its object to provide a circuit arrangement which is overall cost-effectively feasible and offers a high degree of freedom in terms of positioning or training of switch or input zones.
  • a signal receiving device for receiving control signals
  • At least one input circuit for outputting a control signal in accordance with an input operation performed with respect to the input circuit
  • this circuit arrangement is characterized in that the input circuit comprises an electrode device for detecting the input operation based on field-electrical relevant changes in the surrounding area of the electrode device, and
  • That the input circuit is further configured such that an operating power supply via the voltage applied to the input circuit operating signals.
  • the operating signal transmitting device is designed such that it comprises a transmitting coil for emitting a B field alternating in terms of its field strength.
  • the input circuit which can be placed as required in accordance with the respective design requirements preferably comprises an input circuit coil device for effecting an energy pickup from the aforementioned alternating B field.
  • the operating signal generated via the operating signal transmitting device is preferably modulated in such a way that it is assigned, at least in phases, with address information.
  • This address information can be adjusted so that it can be addressed by a particular input circuit, activated and queried with respect to a particular detection event.
  • This concept makes it possible to construct the circuit arrangement according to the invention in such a way that that the basic circuit can ultimately process collision-free control signals, which are generated by numerous, provided for various input operations input circuits of an input area, in particular switching panel.
  • the control signal output by the respective input circuit is preferably also output via the input circuit coil device, so that this organ acts as a bidirectional interface.
  • the signal receiving device is preferably designed such that it comprises a signal receiving coil device for receiving the control signals output by the input coil device. It is possible to combine the signal receiving coil means and the operating signal coil means into a common coil. This coil is preferably arranged so that the high-efficiency B-field generated thereby detects the input circuits of the switching system. For this purpose, the coil is preferably guided such that it surrounds a placement region of the input circuit.
  • the input circuit may be configured such that at least the input circuit coil device is arranged such that the field lines generated by the operating signal coil device strike the input circuit coil device at a right angle if possible.
  • the control signal generated by the respective input circuit can be fed back to the base circuit by "impedance modulation" of the operating signal Alternatively, or in combination with this measure, it is also possible to return the control signal to a frequency range offset from the frequency range of the operating signal it is possible to design the circuit arrangement in such a way that the control signals generated by the respective input circuit are output with a certain time offset to the operating signal.
  • the operating signal can be generated such that it represents a carrier signal, wherein the control signal returned to the base unit is generated by a modulation method referring to the carrier signal, in particular FSK, (Q-) PSK.
  • the control signal can be generated in such a way that it transmits on / off information. Furthermore, it is also possible to provide input circuits which are designed such that the control signals supplied by this input circuit have a value within a range of values, e.g. within the range of 0 to 256.
  • the respective input circuit can be formed by an integrated circuit (in particular ASIC) such that the control signal outputted by the latter according to a predetermined approach with an approximation event, e.g. the approach of a finger, correlates. It is possible to provide memory devices in the area of the input circuit, by means of which it is possible to program the input circuit for certain functional properties. It is also possible to configure the input circuit in such a way that the individual address of this input circuit can be defined within the scope of an input circuit programming mode. It is also possible the
  • the invention further relates to a circuit device which comprises a server circuit and a plurality of client circuits and which makes it possible to use these client circuits to return signals to the server circuit in order to handle, for example, user input operations or switching operations required by machine states.
  • the invention is directed to a circuit device for handling switching operations in electrical appliances, or in the field of a user environment such as in particular workplaces and vehicle interiors.
  • a plurality of client circuits for generating switching signals in accordance with a trigger event applied to the client circuit
  • a server circuit for detecting switching signals which are output by the client circuits respectively
  • the client circuit is equipped with an electrode device having a first electrode El and a second electrode E2,
  • This electrode device acts as an interface member and also the power supply of the respective client circuit is accomplished via this electrode means, and
  • the load modulation is accomplished by a serial switch.
  • this serial switch consists of two anti-series connected transistors (MOSFETs). This makes it possible in a particularly advantageous manner to maximize the degree of separation for both half-waves of the server signal.
  • MOSFETs anti-series connected transistors
  • the serial switch as a series connection of two sub-switches (eg those transistors mentioned above) in order to be able to use more complex modulation and signal coding forms.
  • the first sub-switch with the client response frequency modulating the second sub-switch with another independent frequency or code.
  • the circuit device according to the invention is preferably designed so that the clients can be distinguished according to their modulation frequencies. This makes it possible to avoid any collisions of transmitted data.
  • the modulation frequencies are preferably generated by a frequency divider to bring about synchronism with the server signal and to at least substantially suppress any frequency drifting (e.g., by a temperature change).
  • At least some of the client circuits are configured so that a client realized thereby can change its response (e.g., the split ratio) based on the data transmitted from the server.
  • a client realized thereby can change its response (e.g., the split ratio) based on the data transmitted from the server.
  • the client it is also possible for the client to work in pulse mode in order to enable the transmission of information into the server in the form of pulse width modulation and to increase the range (pulse mode requires smaller power).
  • the circuit device can comprise a number of clients that are similar in construction and only have a specific identifier during the course of the installation.
  • the clients in addition to the individualization of the clients in order to differentiate between different clients, it is also possible to design the clients so, in particular to equip with programming or switch options that their functional properties, such as whether an analog level detection handled or a On / off switching function should be realized, can be adjusted as needed.
  • the circuit device according to the invention in electrical appliances, it is possible using the circuit device according to the invention to create variation possibilities of manufactured devices (eg the key assignment of a finished device is customized with subsequent labeling of the operator panel).
  • the split ratio of the client can be hard-coded during its production.
  • the so preconfigured clients can be characterized by small component Aauf horre, or other features, so that these clients can be distinguished from each other if necessary. This makes it possible to dispense with the programming step after installation, or to make this only for a few, with respect to their configuration again altering clients.
  • the coupling surfaces of a client may be formed parallel to one another in the manner of a plate capacitor.
  • the individual clients can be designed as small "pills" or coin-like components.
  • the clients are internally equipped with protection circuits, which prevents unacceptable loading of the sensitive circuit areas when outside of impermissibly strong fields affect the respective client.
  • the core electronics preferably realized by an ASIC can be arranged in the intermediate region between the two coupling surfaces.
  • Such a construction is particularly suitable for detecting bridging effects caused, for example, by a change in the dielectric properties in the immediate vicinity of the client - e.g. by approaching a finger, or an object - can be caused.
  • the clients it is also possible to design the clients so that they have only small coupling surfaces which, when the client is attached, are contacted to a carrier structure having electrodes of sufficient dimensions prepared therewith (for example coated with conductive ink). This makes it possible to create extremely small clients that are attached, for example, by a CIM assembly process to certain larger components, enclosures, panels, drawers, etc., and thereby associated with electrode systems in combination.
  • the circuit device can be constructed in such a way that it can be checked by it to determine whether one or more specific clients are located in a specific area or a certain position.
  • This concept makes it possible to record system states of a device.
  • a household appliance in the form of a washing machine can be determined, for example, whether a sieve, or a Waschpulverkubfach is in a correct position.
  • the clients used for recording the system status can be integrated in the corresponding components, eg screen, slot, etc. It is also possible to arrange the clients provided for detecting certain system states in such a way that they can be used to determine whether a particular element, for example a removable element, is in a predetermined position.
  • the removable or positionally variable component may be designed such that it itself does not contain a "ZPS" client, but only changes the electric field in the environment of a monitoring ZPS client, which allows a conclusion as to whether said part is present.
  • the removable part includes a conductive surface that "shorts" the field across the electrodes of the ZPS client and thus turns it off, or alternatively connects to the ZPS server (or mass) and turns on the ZPS
  • the client can have a modular structure and in this case comprise a signal processing module and an electrode module.
  • the signal processing module can be designed as a standard module with an ASIC.
  • the special application requirements can be taken into account via the electrode module.
  • this is also directed to an electrical circuit arrangement and to a method for collecting and transmitting switching signals, in particular for applications in connection with electrical appliances.
  • the invention is in this context an object of the invention to provide a circuit arrangement which is generally cost-effective and in terms of positioning or training of switch or input zones offers a high degree of freedom and is characterized by a high degree of reliability.
  • a server device for detecting switching signals
  • the individual client circuits and the server device are configured so that in the area of the server device, an unambiguous assignment of the switching signals or the information content thereof to the client circuit which causes this switching signal is made possible.
  • the server device is equipped with a receiving electrode device for receiving the switching signals.
  • This receiving electrode device can be connected to the server device in such a way that an electrical "feed field" modulated in accordance with a carrier frequency is also generated via this receiving electrode device
  • This feed field can also be modulated in such a way that this specific field is modulated Address information and command contents by which the individual client circuits can be specifically addressed.
  • the involvement of the client circuits in the overall system can be accomplished in such a way that an increase in intensity of the field-electrical coupling of the client circuit with the server device is achieved in connection with an input event acting on the respective client circuit, this increase in intensity when determining a switching state or the determination of a manipulated value is taken into account.
  • the client circuits it is also possible to make provisions for a preferably permanently sufficient field-electrical coupling of the client circuits with the server device and in the client circuits by local switch, or sensor devices, especially LC sensor networks, locally the To detect input event.
  • the switching signal transmission from the client circuit to the server can then be accomplished in particular by impedance modulation, or else by additive superposition of one or more frequencies or a code from the client to the feeding carrier.
  • the client circuits are preferably designed such that an operating power supply is accomplished via the electric field, preferably emitted by a carrier frequency, emitted by the server device.
  • the client circuits are preferably also designed so that they each comprise an electrode device for detecting the input operation based on field-electrical relevant changes in the surrounding area of the electrode device.
  • This electrode device preferably forms part of a capacitor, wherein the observation area provided for detecting the input event includes the dielectric which determines the capacitance of this capacitor and changes in accordance with the input event.
  • the server-client system can be designed so that a synchronous operation of the system takes place, in particular by means of digital frequency division of the carrier frequency in the client to control the switch so that each client is assigned a separate divider factor for frequency coding.
  • the client switch can alternatively be controlled with a code for generating a client ID. This code can be individually programmed in particular during the production of the client or the assembly of a support structure with the respective clients and read when activating the client either with a clock derived from the received carrier signal or by means of a free-running oscillator generated clock.
  • FIG. 1 is a schematic diagram for illustrating the basic structure of a circuit arrangement according to the invention
  • FIG. 2 is a sectional view for illustrating the structure of a variably positionable input element according to the invention
  • FIG. 3 is a schematic diagram for explaining a preferred circuit construction of the input circuit according to the invention.
  • FIG. 4 shows a perspective illustration for illustrating the use of the circuit arrangement according to the invention in a household appliance
  • FIG. 5 shows a sketch to illustrate the use of the circuit arrangement according to the invention in a flat screen
  • FIG. 6 a sketch to illustrate the use of the circuit arrangement according to the invention in a vehicle cockpit
  • FIG. 7 shows a sketch for illustrating the use of the circuit arrangement according to the invention in a motor vehicle seat
  • FIG. 8 shows a representation to illustrate a value P. correlating with the approach of a finger to an input circuit according to the invention.
  • FIG. 9 shows a sketch to illustrate the basic structure of a circuit device according to the invention, including a block diagram of a ZPS client according to the invention for an inventive
  • FIG. 10 shows a circuit diagram for illustrating a preferred internal structure of a ZPS client according to the invention
  • FIG. 11 shows a further block diagram for illustrating the structure of another
  • Figure 12 is a sketch illustrating a system variant with a on a
  • Figure 13 is a block diagram illustrating the construction of a circuit system according to the invention in which each client is assigned a code, the codes of these clients are all output at the same carrier frequency;
  • FIG. 14 shows a diagram for illustrating an encoding concept below
  • Figure 15 is another diagram illustrating another
  • FIG. 16 shows a block diagram for illustrating the structure of a circuit system according to the invention in which an additive superimposition of one or more frequencies or of a code on the feeding carrier is undertaken;
  • Figure 17 is a block diagram illustrating the structure of a circuit system according to the invention in which different groups of clients different carrier frequencies are allocated;
  • Figure 18 is a block diagram illustrating the structure of a circuit system according to the invention in which via a multiplexer successively the electrodes for different client groups are coupled to the server and fed by this.
  • FIG 19 is a block diagram illustrating the structure of a circuit system according to the invention in which the clients are designed as E-FeId sensors and the inside are attached to a control panel element of an electrical particular household appliance.
  • the circuit arrangement shown in Figure 1 comprises a signal receiving device SE for receiving control signals S, and an operating signal transmitting device BS for transmitting operating signals BI, wherein in the embodiment shown here, the signal receiving device SE and the operating signal transmitting device BS are summarized.
  • the circuit arrangement furthermore comprises a base circuit B for processing the control signals received via the signal receiving device SE and at least one input circuit I for outputting a control signal S in accordance with an input operation performed with respect to the input circuit I, for example by the finger F of a user indicated here.
  • the circuit arrangement shown here is characterized in that the input circuit I comprises an electrode device El, E2, E3, for detecting the input operation based on field-electrically relevant changes in the environmental region of the electrode device El, E2, E3.
  • the circuit arrangement is further distinguished by the fact that the aforementioned input circuit I is designed in such a way that an operating power supply is effected via the operating signals applied to the input circuit I and emitted by the operating signal transmitting device BS.
  • the operating signal transmitting device is designed as an operating signal coil device for transmitting the operating signals BS in the form of a B field alternating in terms of its field strength.
  • the input circuit I comprises an input circuit coil device IS for effecting a power tap from the aforementioned alternating B field.
  • the B-field radiated by the operating signal transmitting device is modulated such that it is occupied with address information over which input circuits present within the space occupied by the B-field with sufficient intensity, i.e., specific input circuits. addressed can be addressed.
  • the address information is set via the base circuit B.
  • control signal S supplied to the signal receiving device SE which is likewise designed as a coil device, is likewise generated by the input coil device IS in the form of a modulated B field.
  • the signal receiving device SE supplied control signal S is detected via the base circuit B and used by an integrated into the base circuit B, preferably programmable electronic circuit for determining switching states. About these switching states output lines Al, A2, A3 can be connected.
  • the coil provided for realizing the signal reception device SE and the operating signal transmission device BS is designed such that it surrounds the arrangement region of the input circuits I. Just inside of this Coil means SI fringed area, it is possible to accomplish a particularly effective power supply of the input circuits I on the B field picked up by this. However, it is also possible to design the input circuits so that their operation becomes possible even at relatively low field strengths and to arrange these efficient input circuits outside of the area surrounding the coil
  • the feedback of the control signal S to the base circuit B can be accomplished, in particular, by special modulation methods, which refer to a carrier frequency provided, for example, directly by the operating signal BS.
  • the control signal S can be generated in such a way that it represents only on / off information which is determined on the basis of detection criteria still processed in the area of the input circuit 1.
  • the input circuit I can be constructed such that these approximations of human limbs are detected in the detection area D shown here, wherein this detection area D preferably has an extension of approximately 60 mm.
  • the input circuit I comprises a housing element designed as a flat plastic pot component 1 and a bottom section 2.
  • the bottom section 2 is provided with a conductor track material This conductor material is partially removed in such a way that a coil device with a plurality of flat windings 3 remains on the bottom section 2.
  • a circuit arrangement designed as an ASIC AC is placed and connected to the coil 3.
  • ASIC circuit AC is designed such that the specific functional properties thereof, in particular the specific A Dress code of the input circuit I, can be specified as part of a teach process.
  • the electrode device El, E2, E3 is also located within the plastic pot 1 and is in communication with the ASIC circuit AC. This assembly can be attached by adhesive, clamping or welding joints at appropriate locations inside or possibly outside a housing of an electrical device and thus enable switching functions without special wiring.
  • the input circuit I comprises the input coil 3 as well as the ASIC circuit AC and the electrode device E1, E2, E3.
  • the Asic circuit AC comprises an energy harvester H through which the power picked up via the input coil 3 from the applied, alternating B-field power is stored and stored for example in a gold cap. Furthermore, the ASIC circuit AC includes a Identification circuit I via which it is determined on the basis of the voltage applied to the coil device 3 signal event, whether the input device I is addressed.
  • the ASIC circuit AC furthermore comprises a response device R by which the voltage provided via the Havester device H is modulated so that the control signal S with a specific signal content can be transmitted via the input coil 3.
  • the response device R is coupled to the electrode device El, E2, E3.
  • the electrode device El, E2, E3 is controlled via the response device, wherein values are determined via the response device, which provide information about field electrical properties in the surrounding region of the electrode device El, E2, E3.
  • the energy required to apply an alternating voltage to the electrode means El, E2, E3 is provided via the Havester circuit H.
  • the Havester circuit H can be embodied such that it carries out an energy pickup via the input coil device 3 from the alternating B field applied thereto for a relatively long period of time and stores this energy, for example, in a capacitor device, in particular a gold cap.
  • This stored energy when the ASIC circuit AC is addressed by an appropriate polling address, is available for carrying out a test cycle by which the capacitance of the capacitor realized with the inclusion of the electrode device El, E2, E3 is determined.
  • This capacity, or a variable that correlates sufficiently with this can then be evaluated in the area of the response device R and used for the generation or definition of the signal content of the control signal S.
  • the electrical appliance shown here is, for example, a washing machine.
  • upper device area is designed as a rectangular coil 1 1 and along the outer edge region of the panel connection area extending Signalempfangs- and Radio- transmitting device, SE, BS arranged.
  • This coil device 1 1 is connected via a connecting line 12 to the base circuit B.
  • the individual components of the household appliance such as the engine, heating elements and valves are controlled.
  • the control panel 10 which is preferably made of a plastic material, is equipped with the input circuits I according to the invention in the region of its rear side. In the area of the front side of the control panel 10 can be printed on this switching areas. Structures, in particular switch button structures, can additionally be formed in the region of these switching regions, which additionally generate a certain haptic feedback.
  • the input circuits I integrated in the control panel 10 are located in a region covered by the B field of the coil device 11.
  • the input circuits I are supplied with energy via this B field applied to the coil device 11 and, moreover, the individual input circuits I addressed can be addressed.
  • the input circuits I are, as already mentioned, implemented as E-field sensors, by means of which input operations by human Limbs are detected based on this, field electrical changes in the surrounding area of the respective input circuit I.
  • the input circuits I can be arranged on the control panel 10 with great freedom of design. Furthermore, it is possible to equip the household appliance 12 shown here with a variety of user-side, for example, selected control panel.
  • the coil device 11 also makes it possible to communicate with input circuits IM which, for example, are integrated into moving components such as the washing powder insert IM shown here. On the one hand, it can be ascertained via these input devices I whether the washing powder insert IM is inserted properly into the household appliance 12. In addition, the fill level of the drawer can optionally be determined via this input circuit.
  • the base circuit B can be designed such that it can also be used to control further signal transmission and signal reception coil devices.
  • the circuit arrangement may also comprise further input circuits which, for example, effect signal generation by means of other sensor and switch devices.
  • the circuit arrangement according to the invention in the form of a screen 14, for example in the case of electrical appliances.
  • a coil device which functions as a signal transmission device and as a signal reception device, is laid for this purpose.
  • input circuits II, 12, 13 according to the invention may be arranged, the e.g. user-initiated input operations on these input circuits II, 12, 13 can be controlled by the user.
  • the concept according to the invention is also particularly suitable for applications in the automotive sector.
  • the concept according to the invention makes it possible to create arrangement regions for input circuits II, 12 in accordance with the invention by means of one or a few coil devices 30, 40 installed in the vehicle interior region. In the one of these
  • the input circuits II, 12 In can be arranged with great freedom.
  • the input circuits can be designed so that they ultimately replace classic switching elements. It is also possible, via these input circuits II, 12, 13 to realize proximity sensors by which, for example, an automatic opening of a glove box can be achieved when a user approaches a certain area of this glove box with a certain movement.
  • Input circuits II, 12 In each case supplied, with respect to a Kopf facultyrungsShes indicative level values can ultimately be determined whether the headrest device 50 in a correct vertical position or whether it must be repositioned by an electric actuator.
  • the coil devices 30, 40 provided for supplying energy and for processing the signal transfer can either be installed in the headrest 50, as indicated here, or else in the region of the seat back 51. In the arrangement of the coil device 51 in the region of the seat backrest, it becomes possible in an advantageous manner to accommodate the entire headrest positioning motor in the area of the backrest 51 and to incorporate into the headrest 50 only a sufficient number of input devices II, 12, 13 powered by the B-field according to the invention.
  • FIG. 8 shows, in the form of a simple graph, the rise of a level value P which, as such, can be detected on approaching human limbs to the input device I according to the invention. It is possible to determine from the time course of the level increase on the basis of evaluation criteria, e.g. Level + Dynamics define certain switching functions. In the embodiment shown here it is possible, for example, to determine on the one hand, whether above a threshold level SP, a level increase with a certain gradient increases gradient, and whether between the time TO, at which this significant gradient gradient and the time Tl at which the maximum level is reached , a certain time criterion is met. If, for example, the time interval between the level rise criterion K1 and the maximum level criterion K2 is less than 0.15 seconds, this can be interpreted as a switching operation, for example.
  • evaluation criteria e.g. Level + Dynamics
  • detection systems can also be realized which also allow an X / Y Z position determination of a finger, whereby touchpad or gesture input systems can be advantageously realized.
  • FIG. 9 shows a circuit arrangement with a plurality of client circuits ZPS for generating switching signals in accordance with a triggering event which is applied to the client circuit here, for example by approaching a finger with a specific dynamic profile.
  • the switching device furthermore comprises a server circuit SV for detecting switching signals which are output by the client circuits ZPS in each case.
  • the signal-technical coupling of the client circuits ZPS with the server circuit SV takes place on the basis of a modulated quasi-static alternating field which is transmitted via a transmission electrode SEE.
  • the individual client circuits ZPS are each equipped with an electrode device having a first electrode EL1 and a second electrode EL2.
  • This electrode device acts as an interface member and also serves the power supply of the respective client circuit ZPS.
  • the signal transfer from the respective client circuit ZPS to the server circuit SV is accomplished by load modulation in the area of the respective ZPS.
  • the circuit arrangement shown here is characterized in that the load modulation by a serial switch, or at least two series-connected sub-switch Sl, S2 accomplished.
  • a ZPS client is an electronic circuit that
  • Capacitively coupled to AC electric field e.g., provided by a ZPS server
  • this signal being e.g. is transmitted via load modulation to the ZPS server.
  • a synchronous ZPS client derives its signal frequency from the frequency of the alternating field of the ZPS server.
  • the alternating electric field of the ZPS server not shown here is coupled into one of the electrodes; the second electrode is connected (capacitively) to earth.
  • the coupling capacitances occurring in practice are usually in the range 0, IpF to IpF.
  • the switches serve to largely separate the client electronics from the electrodes.
  • the load modulation through a serial switch causes the change in the load to be most possible for the server and thus the degree of modulation (i.e., SNR) to be maximum.
  • the switch is preferably made of two anti-serially connected MOSFETs to maximize the degree of separation for both half waves of the server signal.
  • the voltage generation prepares a DC voltage from the carrier signal and contains an overvoltage protection.
  • the start-up circuit switches on the frequency divider only after reaching sufficient operating voltage and below the minimum permissible operating voltage.
  • the modulation frequency is generated from the carrier with the division ratio M / N, where 1 ⁇ M ⁇ 3, N ⁇ 512.
  • the ZPS client does not modulate the server signal with a fixed frequency but with a specific code.
  • the ZPS client can receive signals from the ZPS server and respond accordingly, eg, set other division ratios for the signal frequency, and transmit measured data.
  • the ZPS client has non-volatile memory to store the data sent by the server (eg new split ratio). As a result, the clients can only be assigned "their properties" after installation in the device.There is a possibility to program the ZPS client during production (for example, this one ID) assign).
  • the ZPS client can be designed so that this more complex modulation method allows, for example FSK, if necessary, the client receives this another switch.
  • the range of the ZPS client can be increased by pulsed operation: The client first collects the electrical energy in the switched-off state and then uses it for operation. If the power consumption in operation is greater than the client can get through the (very small) coupling capacity continuously, it comes to the pulse-like operation.
  • FIG. 11 further shows, in the form of a detailed circuit diagram, a particularly preferred structure of a ZPS client according to the invention.
  • the sub-switches are designed here as anti-series connected transistors Tl, T2 (MOSFETs). This special concept makes it possible to maximize the degree of separation for both half-waves of the server signal provided by the server SV (see FIG. 1).
  • FIG. 12 shows a variant of a system according to the invention in which the client circuit ZPS is designed such that it handles both its energy reference and the signal transfer via the field provided by the server device SV, but the detection of a detection event - here finger approach - by an electrode arrangement DT1, DT2, which as such detects the changes in the dielectric properties of the observation area O caused by the detection event.
  • the signal path S (indicated as a dashed-dotted line) on the user A.
  • the event to be detected in the observation area O could also be caused by a component screen, drawer or the like to be detected. It is possible to form this component to be detected so that it at least in the Beriech its in the Observable range has properties that enable a particularly reliable detection.
  • the core circuit K-ZPS can be designed so that it provides several connection options for detecting detection events, as well as for processing signal transmission electrodes.
  • the erfmdungswashe system may be constructed so that this client circuits of various types, in particular the design of Figure 1 and the design of Figure 2 includes.
  • the coding of the various clients can also be effected by providing two consecutive switches in the client, each of which is operated simultaneously with a different switching frequency, whereby the switch then characterizes by two frequencies instead of one frequency is and in particular a greater immunity to interference against narrow-band interference is achieved.
  • FIG. 15 another possibility of coding with two or more frequencies and one switch is that the switch is driven sequentially with two or more different frequencies, which can be interpreted as FSK modulation of an average switching frequency. As a result, a greater interference immunity is achieved in an advantageous manner.
  • a pulse-shaped operation of the switch can take place, which results in a lower power requirement in the client, thereby enabling an increase in the distance between the server and the client.
  • a range measurement of the bridged distance can also be carried out.
  • the configuration of the electrodes on the client can take place either in sandwich form (both electrodes parallel to one another) or else in a butterfly structure (electrodes unfolded against each other)
  • the installation of the clients can be done by clips, gluing, especially under connection to other, especially larger electrode systems.
  • the electrodes of the clients may in particular be provided by conductive thin films, e.g. Paint can be realized
  • the principle of correlation reception in the server is preferably used if a synchronous system is present by means of the frequency division explained in FIG.
  • This correlation reception takes place by means of a complex discrete Fourier transform (DFT) in a processor which processes all client signals simultaneously during a fixed time window.
  • DFT complex discrete Fourier transform
  • this is 30ms to 100ms, so that after this time, all necessary information about the clients in the frequency domain is present as single complex numbers, if the principle of a frequency division multiplexing system is used for coding. Since the frequencies of the clients are known on the server side, the so-called Goertzel algorithm can be used for this, which corresponds to the correlation reception in the frequency domain.
  • the clients in such a way that, as small slice-like or "pill-like" components, they are connected on the inside to a carrier component P, in particular one Control panel of an electrical appliance, in particular household appliance can be set. These components are powered by the server-side generated field.
  • the client n shown here has a detection electrode device DT1, DT2 via which changes in the dielectric properties in the vicinity of the electrode device DT1, DT2 can be detected by means of an LC network SW and used to drive the further switch shown here.
  • Such client devices with integrated sensor can be arranged with great freedom of design on control panels and thereby create on these control panels input zones for initiating user-side switching operations.

Abstract

L'invention concerne un dispositif de circuit électrique et un procédé permettant de recueillir et de transmettre des signaux de commutation, en particulier pour des applications en liaison avec des appareils électriques. L'invention a pour but d'obtenir un dispositif de circuit, d'une part, pouvant être réalisé économiquement et, d'autre part, offrant une liberté de configuration élevée au point de vue positionnement ou formation des zones de commutation ou des zones d'entrée. Ce but est atteint grâce à un dispositif de circuit comprenant : un dispositif de réception de signaux, pour la réception de signaux de commande, un dispositif d'émission de signaux de fonctionnement, pour l'émission de signaux de fonctionnement d'un circuit de base pour le traitement de signaux de commande, et au moins un circuit d'entrée pour délivrer un signal de commande, lorsqu'il s'agit d'une opération d'entrée effectuée au circuit d'entrée. L'invention est caractérisée en ce que le circuit d'entrée comprend un dispositif d'électrodes pour la détection de l'opération d'entrée au moyen de variations électriques du champ dans l'environnement du dispositif d'électrodes, et en ce qu'en outre le circuit d'entrée est configuré de façon qu'une amenée d'énergie de fonctionnement s'effectue via les signaux de fonctionnement se présentant sur le circuit d'entrée.
EP09706009A 2008-01-31 2009-02-02 Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation Withdrawn EP2263315A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE200810006969 DE102008006969A1 (de) 2008-01-31 2008-01-31 Schaltungsanordnung, sowie Verfahren zur Erhebung und Übertragung von Schaltsignalen
DE102008006970 2008-01-31
DE102008006972 2008-01-31
PCT/EP2009/000671 WO2009095276A2 (fr) 2008-01-31 2009-02-02 Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation

Publications (1)

Publication Number Publication Date
EP2263315A2 true EP2263315A2 (fr) 2010-12-22

Family

ID=40872771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09706009A Withdrawn EP2263315A2 (fr) 2008-01-31 2009-02-02 Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation

Country Status (5)

Country Link
US (1) US8723715B2 (fr)
EP (1) EP2263315A2 (fr)
JP (1) JP5558368B2 (fr)
DE (1) DE112009000243A5 (fr)
WO (1) WO2009095276A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015643A1 (de) * 2010-04-20 2011-10-20 Liebherr-Hausgeräte Ochsenhausen GmbH Haushaltsgerät
US8988080B2 (en) 2010-06-08 2015-03-24 Iee International Electronics & Engineering S.A. Capacitive measurement system with increased robustness against electro-magnetic interference
CN106600808B (zh) * 2016-12-09 2022-12-02 深圳市倍量电子有限公司 硬币鉴别方法及其装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10145211A (ja) 1996-11-08 1998-05-29 Nippon Signal Co Ltd:The 光エリアセンサ
JP3873350B2 (ja) 1997-02-17 2007-01-24 凸版印刷株式会社 非接触ｉｃカード
JPH1139351A (ja) 1997-07-17 1999-02-12 Nec Eng Ltd アンケートデータ収集システム
JP2000100287A (ja) * 1998-09-21 2000-04-07 Smk Corp 操作パネル入力装置
JP2001136056A (ja) 1999-11-09 2001-05-18 Omron Corp 非接触検出スイッチ装置
JP2002191566A (ja) 2000-12-27 2002-07-09 Ntt Electornics Corp 生体情報検出方法、生体情報発信装置、及び生体情報検出装置
AU2003242565A1 (en) * 2002-05-23 2003-12-12 Ident Technology Ag Object presence analysis system and method
US8665077B2 (en) * 2002-08-15 2014-03-04 Ident Technology Ag Circuit for selectively producing switching signals, especially for a vehicle door locking, a vehicle, system and method equipped therewith for protecting areas of risk as well as a system, system components and method for hermetically transferring validatable data
WO2006094606A1 (fr) * 2005-02-15 2006-09-14 Ident Technology Ag Ensemble circuit electrique
EP1868492A2 (fr) * 2005-03-22 2007-12-26 Aware Technologies, Inc. Reseau de donnees personnel portable
DE102005038678A1 (de) * 2005-08-16 2007-02-22 Ident Technology Ag Erfassungssystem, sowie diesem unterlegtes Erfassungsverfahren
DE202008010280U1 (de) * 2008-07-31 2008-10-30 Ident Technology Ag Bedienblende für Haushaltsgerät

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP5558368B2 (ja) 2014-07-23
WO2009095276A3 (fr) 2010-02-25
JP2011526743A (ja) 2011-10-13
US8723715B2 (en) 2014-05-13
WO2009095276A2 (fr) 2009-08-06
US20110001650A1 (en) 2011-01-06
DE112009000243A5 (de) 2011-02-03

Similar Documents

Publication Publication Date Title
WO2015180942A1 (fr) Moyen de détection d'un véhicule automobile
DE19520368A1 (de) Vorrichtung und Verfahren zur automatischen Aktivierung eines Meßfühlers, insbesondere eines Ultraschall-Applikators
EP0990221B1 (fr) Carte a puce comportant au moins deux dispositifs bobines et permettant de transmettre des donnees et/ou de l'energie
DE102006008281A1 (de) Sensoreinrichtung
EP3166228A1 (fr) Module capteur, système de capteur et procédé de détection capacitif et à résolution spatiale d'une approche et mise en contact, utilisation du module capteur
DE19509517C1 (de) Vorrichtung, bestehend aus mindestens einem Kartenendgerät zur Übertragung von Energie zu einer Chipkarte und zum Datenaustausch mit der Chipkarte über elektromagnetische Wellen
WO2011131393A1 (fr) Poignée extérieure de porte munie de modules d'accès passif et d'un module d'éclairage
EP0322698B1 (fr) Méthode pour la transmission d'informations
WO2009095276A2 (fr) Dispositif de circuit et procédé permettant de recueillir et de transmettre des signaux de commutation
DE19955070A1 (de) Schalteranordnung für ein Kraftfahrzeug
WO2008040517A2 (fr) Système de traitement de signal et composants de ce système
EP1519623B1 (fr) Télécommande pour des prothèses auditives
WO2009046951A1 (fr) Panneau de commande et dispositif de circuit pour la commande d'un appareil électrique
EP3452966A1 (fr) Procédé de logistique de stockage
EP2826146A1 (fr) Détecteur de proximité et panneau de commande formé avec le détecteur
WO2019211368A1 (fr) Appareil d'entrée utilisant une partie d'actionnement et une influence de champ triphasé électromagnétique pour la détermination d'une information de position
DE102007036220B4 (de) Vorrichtung zur Abstrahlung von Lichtsignalen sowie eine solche Vorrichtung enthaltende Basisstation eines diese und zumindest einen Staubsammelroboter umfassenden Staubsammelrobotersystems
DE102008031534B4 (de) Transponder und Anordnung mit einem solchen Transponder
DE10334061B4 (de) Schaltungsanordnung und Verfahren zur Diagnose einer Antennenschaltung
DE102008006969A1 (de) Schaltungsanordnung, sowie Verfahren zur Erhebung und Übertragung von Schaltsignalen
DE102006039387A1 (de) Bedienvorrichtung für ein elektrisches Gerät
DE102009033786B4 (de) Vorrichtung und Verfahren zur kapazitiven Datenübertragung
DE102020102526A1 (de) Sensoranordnung zur Erfassung wenigstens einer Einwirkung bei einem Fahrzeug
DE102006027437A1 (de) Schaltungsanordnung und Verfahren zur Steuerung eines Antriebs für eine verstellbare Tischplatte
DE10357332A1 (de) Elektronische Entkoppelinduktivität für Anwendungen in Aktuator-Sensor-Interface Netzwerken

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100831

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: IDENT TECHNOLOGY AG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170620

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MICROCHIP TECHNOLOGY GERMANY GMBH

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20181127

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190409