MXPA99006873A - Device and method for producing coded high-frequency signals - Google Patents

Abstract

The invention relates to a device for producing coded high-frequency signals, comprising a converter which converts environmental non-electrical primary energy into electrical energy, an element with nonlinear characteristic curves coupled to the converter, and a coding device coupled to the element with nonlinear characteristic curves.

Description

DEVICE AND PROCEDURE FOR GENERATING HIGH FREQUENCY CODED SIGNALS BACKGROUND OF THE INVENTION It is known to generate energy and high frequency signals with the help of low frequency electrical energy, for example, direct current (battery) energy, network frequency current energy and similar energy from energy sources. Similar. High-frequency transmitters fed from the network and high-frequency emitting devices operated with batteries, such as radio sets, mobile phones (Handy) or cordless phones, are widely used. High-frequency, uncoded, but preferably encoded / modulated, signals can be output with these devices for numerous radio transmissions of information. For cases of battery operation, solar energy can also act as a primary energy source, with the help of which, if there is sufficient lighting, a rechargeable battery or an accumulator can be recharged or maintained in a charged state. It is also known to consult remote physical and similar data, measurement dimensions, etc. An example of a distance consultation like the previous one is, for example, a remote thermometer, with which the temperature, for example, of a boiler is measured, and it is indicated in a place away from the boiler. A remote thermometer that works purely electrically has for it a two-wire electrical line between the temperature-sensitive sensor and the indicating device itself. Devices that can be consulted at a distance are also known, in which the link between the sensor and the indicating device is a radio transmission. The data transmission is carried out wirelessly, however, in the place of the sensor, a source of electrical energy is required, namely for the transmitter. Therefore, if you intend to have a completely wireless link, an electrical battery power supply is used instead of the data query (if there is no other electrical source available at that location). Remote consultation devices without power supply to the sensor are also known, in which the power required for the data transmission is wirelessly coupled in a surface wave device with a correspondingly energy-rich and broadband reference pulse. and from there, after proper processing of the signal, it is passively sent back. However, in this case, it is disadvantageous that the energy-rich query pulse must be sent regularly more frequently while the precise dimension must be determined or observed.

OBJECTIVES AND ADVANTAGES OF THE INVENTION The object of the present invention is to provide a generation for an emitter of this type, which can be used advantageously in a special case of operation. This special operation consists of performing only in relatively short time intervals, which are of interest, a radio transmission of information, being small (for example, only 1 per thousand or less) the length of each time interval, compared to the pauses between said successive time intervals. This object is achieved with a device in accordance with claim 1. Advantageous embodiments are disclosed from other claims as well as a method for generating high frequency coded signals. The invention starts from the fundamental idea, preferably from the point of view of the economics of technical work and also of minimized maintenance, to find a principle that allows a radio transmission of information completely sufficient for any case, using other energy than primary electric energy. Prior to the description of certain examples, the principle on which the invention is based should be briefly indicated, with the following descriptions serving to better understand it.

The case of the photovoltaic transformation was already mentioned, which, however, as we know and can be observed, can only be used to a limited extent. It depends on a sufficient luminous intensity and in general it can only be used conveniently together with elements that save energy (accumulators). The invention is aimed at taking advantage of the energy that in some cases is present even in large quantities, indicated here as primary energy available in the environment, to provide according to the invention electric power to generate a high frequency signal (radio signal) . These normally unused primary energies are mechanical deformation energy, in particular pressure or other forces, frictional forces (at low temperature), thermal energy, acceleration forces, irradiation, oscillatory masses and the like. If forces are cited, the invention takes advantage of its gradient of time or place, which is equivalent to energy. As examples of primary energies hitherto unused, one can mention the pressure / deformation energy in principle necessary to drive an electric switch, the available heat with space or time temperature gradients, for example, of a thermal element, and the acceleration energy of a seismic oscillatory mass, for example, in a vehicle. Agitation, vibration, movement of air are also suitable as primary energies. This exemplary listing is not exhaustive with respect to the invention and should in no way be construed as limiting the application of the principle of the invention. The integral principle of the invention consists essentially in branching from this process energy a portion of energy and transforming it first into, as defined herein, low frequency electric energy. In the most general form, the above is understood in accordance with the invention for the separation of charges, as they are generated, for example, as an electrostatic charge by friction. The term "low frequency" is also understood in accordance with the invention to generate voltage with a gradually increasing amplitude. Also pyro or piezoelectric energy, as well as generated in photovoltaic building elements, can be exploited in accordance with the invention. A next step is to transform this so-called low frequency electrical energy into high frequency electrical energy. For this, according to the invention, an element with a non-linear characteristic line (non-linear element) can be used. For this reason, in the meaning of the invention, an element is understood whose behavior is modified by jumps from a certain limit value or in a range of limit values, depending on the applied voltage. As a result, an element such as this generates a current pulse with an inclined flank, which corresponds in the frequency range to a high frequency signal. Depending on the bandwidth of this high-frequency signal, it is eventually necessary to filter out a narrow-band frequency spectrum from it. However, it is also possible to use a non-linear element, which itself generates a sufficiently high band-frequency signal. In this way it is possible to take advantage of all the energy content of the high frequency signal. Another step of the invention is to encode this high-frequency electric energy with information and to emit it as a high-frequency (narrowband) encoded signal. This coding may be suitable for the identification and / or contain other information, for example, on the type and size of the parameters acting on the coding device. These can be determined physical dimensions, such as a temperature, a force or a jump of impedance, but also chemical or biological parameters, for example, concentration and / or type of gases, vapors, liquids, substances or biological material, such as for example, viruses or genes.

A high-frequency encoded signal is emitted, whose energy content in the case of narrow band selection, if any, is necessarily relatively low, however, still large enough in the application framework of the invention. It is surprising that, despite a low degree of transformation of the primary energy harnessed into energy of the generated high-frequency encoded signal, there is no problem as regards the advantageous application of the invention. At this point it should be mentioned as a complement that the radio reception station (located at adequately limited distance), in a manner known per se, is configured and equipped in such a way that it can record the information of the narrowband high frequency signal ( encoded). Therefore, the above is not a problem on the side of radio reception, because in this place the energy supply of the receiver can be guaranteed in a usual manner, for example, by a network of current, batteries or the like.

BRIEF DESCRIPTION OF THE DRAWINGS The following illustrations / descriptions of embodiments / application and the corresponding figures serve for a better understanding of the invention. Figure 1 shows a block diagram of the energy flow. Figure 2 shows the beginning of a conformation. Figure 3 shows an integrated conformation in schematic plan view. Figures 4a and 4b show two embodiments of an integrated conformation in side view (figure in schematic section).

DETAILED DESCRIPTION OF THE INVENTION Figures 1 and 2: according to the block diagram according to Figure 1, a converter 10 is provided, which transforms the available process energy into electrical energy. Examples of a converter 10 such as this are a piezoelectric element for the transformation of pressure / deformation energy, a pyroelectric body, a pair of thermoelements, an element with Seebeck / Peltier effect or the like, for the transformation of thermal energy with a temperature gradient. , an electrodynamic or piezoelectric system for the transformation of oscillation energy / variation of acceleration in this (in this case for all examples) energy (electric) defined as low frequency. Solar cells are also suitable. It is possible to use as a converter (10) also a friction element, in which the friction between two materials that charge differently generates an electrostatic voltage as low frequency energy. The magnitude of the necessary voltage depends on the non-linear element and ranges from a few hundred to a thousand volts for a disruptive distance, going from around ten to twenty volts for semiconductor construction elements, up to a few volts, as they are sufficient for relays. With 11 a non-linear element is indicated. It serves for the transformation of this so-called low-frequency energy into high-frequency energy, including an internal switching process to trigger a step that takes place in intervals, of the low-frequency energy stored in energy that then adopts / adopted high-energy properties. frequency. They are an example of a non-linear element such as this, in particular, a spark gap or gas discharge tubes. Also suitable is a diode with, for example, varactor or avalanche effect or a thyristor or semiconductor construction element of similar effect. In principle, switches or relays which are suitable for switching the partly small currents of the low frequency electric power and exhibit a correspondingly non-linear behavior are also suitable. By way of example, micro-relays of silicon and relays with piezoelectric tab are mentioned here.

As coding device 12, optionally with additional filtering properties, a plurality of devices is considered. Particularly suitable for this purpose are devices that work with surface waves (OFW / SAW), shear waves or volume waves close to the surface. They may be resonator devices or delay lines possibly dispersive or derived. Also suitable are electroacoustic converters in general, as well as dielectric filters, mechanical filters, coaxial ceramic filters, volume oscillators, for example oscillating quartz or LC oscillation circuit filters or the like. As piezoelectric materials for said electroacoustic converters, lithium niobium, lithium tantalate, quartz, LÍ2B4O7 or langasite (lanthanum-gallium silicon oxide) are particularly suitable. Advantageously, electroacoustic converters with pulse compression (spread spectrum communication or broadband coding method) can also be used as a coding device. These allow a transmission of the high-frequency encoded signal, which is particularly safe against disturbances and, thus, is protected against natural high frequency disturbances or against unauthorized premeditated effects of the encoded signal. This is, for example, the dispersive or derived delay lines mentioned. The high frequency signal can be in any frequency range known or suitable for radio transmission and can be generated by the aforementioned filters or coding devices, for example, from a few kilohertz to several gigahertz. In the following, special embodiments of the invention, of practical application, are described. A first embodiment according to Figure 2 is, for example, using a switch to turn on an appliance, lighting and the like. An example of a very interesting application is the lighting switch in rooms, with which it switches on and off manually. This switch does not require any power and can be placed without any electrical wiring work on the wall or similar. By depressing the switch, with the aid of the invention, the emission of a high-frequency signal takes place, namely without the electric power being supplied to the circuit-breaker. A receiver located anywhere in the room, for example, near the lamp, reacts to the high frequency signal and turns on, or turns off this lighting wirelessly and remotely. Figure 2 shows schematically the configuration of the parts that include the essential ideas of the invention, of a wireless switch with radiosignals, which according to the invention takes advantage of the energy of the process. The converter 10 (as a conventional pressure switch) receives the pressure of the finger P and said pressure generates a piezotension in the piezoelectric element of the converter 10. As piezoelectric materials for these converters, in addition to those mentioned for the electroacoustic converters, they are also particularly suitable. PVDF (polyvinylidene difluoride) and liquid crystal ferroelectric elastomers (FLCE). A switch like this can also be configured as an actor, with which a high-frequency signal is generated and emitted, to which information about an environment parameter is printed by means of coding. In order to generate a high piezo-tension, a mechanical actuation device with springs on the dead center is particularly suitable, which, in the case of a load beyond the neutral point, acts as a shock on the converter with the pre-tension (mechanical ) adjusted. The converter 10 integrally or complementarily includes an electric charge capacity 10 ', which stores the charges generated, or, separated until the release of the non-linear element. The internal capacity of piezo- or pyroconverters may be sufficient for this. In the current circuit shown, as a non-linear element 11, for example, a spark gap is provided, in which, at the moment when the piezoelectric-generated voltage has increased sufficiently, a spark gap occurs. A disruptive distance such as this complies with the necessary condition for the operation of the invention, of an electrical (current) passage that takes place, for example, in the nanosecond range, for the transformation into high frequency energy. Alternatively, as already mentioned, other elements with correspondingly fast breaking behavior can also be used. The current of this spark discharge passes through an inductivity, for example, a broadband filter 20, to close the current circuit. The voltage drop that takes place in this inductance 20 feeds the interdigital structure 22 (converter electrodes) of a surface wave filter 21. In it, as is known, a mechanical / acoustic wave is generated. The coding can be carried out on the input and / or output side of the filter, by means of a special configuration of the interdigital structure. It is also possible to provide a pattern 23 of reflective strips arranged according to an encoding, whose "echoes" form the same. If a cavity is formed in the filter, a resonant oscillation can be generated, the precise frequency of which forms the coding. The coded signal is obtained at the filter output. In the exemplary embodiment, the collaboration of the interdigital structure and the reflecting bands leads as it is known that in the dipoles of the antenna 24 shown, the high-frequency radio signal described above appears (in this case, encoded with the code of the structure 23) and the aforementioned receiver is issued. A surface wave device that works as a reflective delay line, provides a coding in the time field and a device that works as a resonator (not shown in the Figure) provides an encoding in the field of the frequency. The coding can also be carried out depending on a parameter of the environment. For the description of another embodiment of the invention, Figure 2 is again sufficient. In the case of an embodiment for taking advantage of the thermal process energy, the converter 10 is, for example, a pyroelectric body provided with electrodes ( pyro-element). For this embodiment, the arrow P constitutes the thermal energy supply. For use in accordance with the invention, it is necessary that this primary thermal energy has, for example, temporary temperature gradients. The above is the case, for example, in thermal elements (such as those used in heating rooms) with thermostatic regulation, which produces temperature variations of the element in the range of a few degrees Kelvin, which (surprisingly) are completely sufficient for the purposes of the invention. In this described embodiment, the converter 10 alternately undergoes heating and cooling, which produces a formation of a voltage in the pyroelement, of changing magnitude and polarity. The non-linear element, again here can be a disruptive distance again, means that, upon reaching a determined voltage variation (positive or negative), a spark discharge takes place, which triggers the processes already described above in the embodiment Piezoelectric A particularly interesting application case in this regard is the remote recording of thermal consumption data of room heaters, known per se, until now working with another power supply. An embodiment as described, in accordance with the principle of the invention, namely without electrical power, can be used even with two advantages. The second advantage is that, in a manner known per se, the surface wave element 21 can also be used for the direct measurement of temperature. The center frequency, or the travel time of the high frequency and narrow band output signal of the surface wave converter is, or can be (performed in a manner) sensitive to temperature. If this surface wave element is in thermal connection with the, for example, thermal element, with the embodiment according to the invention, in a unit it is possible to measure both the temperature and also, with heat supplied, generate the necessary energy electrical for the high frequency emission process produced in accordance with the invention. each signal thus presents a change in temperature, or a switching process and simultaneously provides the corresponding temperature acting on the converter (Pyroelement). It is also possible to use the thermal energy only for the transformation in the high frequency pulse and perform the coding depending on any other variable dimension in the environment of the device. An embodiment with exploitation of the energy of the process of mechanical movements with varied acceleration of a seismic mass, can also be described with Figure 2. The converter then includes this seismic mass and the arrow P symbolizes the mechanical supply of energy, which produces the oscillations of the seismic mass contained in the converter 10. This mechanical supply of energy can be continuous alternating energy or also only impulse energy respectively applied once. By means of an eccentric, also the energy of rotating objects can be transformed into a high frequency signal, which, in turn, can be encoded with information on any environmental parameter. The vibrations can also be determined with seismic masses or with piezoelectric converters and / or used for transformation. The applications of the invention are offered in various ways, for example, in the area of operation of machines, vehicles of all kinds, for example, railway cars, road vehicles, rolling racks and the like, for the monitoring or observation of liquid, dissolved, gaseous or vaporous media, of the most diverse type or also of living beings to be watched. An object such as this or a living being, equipped with a device according to the invention, can emit (without requiring an electric battery) according to the invention at intervals of time, continuously (while moving or being moved) signals encoded high frequency. The above can be exploited for, based on high frequency signals coded individually / differently for the corresponding objects or living beings, differentiate them at a distance and, simultaneously, record their data of acceleration or movement, temperature or other state. In the case of living beings, this could automatically register, for example, the movement activity of grazing animals, children or other people who require care or surveillance. It is also possible, for example, to set a certain limit value here for the movement activity, by triggering, or else, the encoded signal is issued when exceeding or not reaching it. Devices according to the invention can be used to automatically record certain limit loads (for example, thermal or mechanical), which only generate a high frequency signal when reaching this limit load and transmit it wirelessly to a receiving station, or, to a surveillance device. In this way, it is possible to monitor only active, if necessary, physical dimensions. The magnitude of the limit load can be given by the reaction point of the non-linear element or of the converter or it can be adjusted in a variable manner. A mechanical limit load can also be adjusted by means of an additional pre-compressed spring, which makes possible the reaction of the converter (piezoelectric) only when reaching the pre-compression force. In this way, an automatic weight control can also be performed, which, by not reaching or exceeding a certain weight, automatically sends this information through an encoded signal to a receiver, or monitoring device. It is also possible to record a variation in weight. In this way, the device according to the invention can also be used for surveillance against theft. Figures 3 and 4 show the configuration of a device according to the invention formed in an integrated manner and that can be used as a thermal meter. A substrate body in the form of platelets (e.g., 1 cm) with, inter alia, pyroelectric properties is indicated with 101. For example, it can be a barium titanate ceramic, lead zirconate titanate or the like, or else a crystalline lithium niobate (uni) material, lithium tantalate or the like. On the two surfaces of the platelet, two surface electrodes 41 and 42 are provided, from which a voltage that is pyroelectrically generated can be taken. In the substrate plate 101, in the second variant according to Figure 4b there is disposed a piezoelectric plate 110, for example adhered, which serves for a device of surface waves and other functions yet to be described. An optimized embodiment is the embodiment variants of Figure 4a, in which this piezoelectric panel 110 is an integral area of the substrate plate 101, in the event that the pyroelectric material of the substrate plate 101 also has, at least in this area, also piezoelectric properties (and also suitable for a surface wave device), as is the case with the (unicrystalline) material of lithium niobate, lithium tantalate and the like. For reasons of integrity, it should be noted that for the principle of the variant according to Figure 4b, the piezoelectric board 110 can be placed only electrically connected, locally separated from the plate-shaped body 101, for example, when the plate 110 must be thermally insulated from the body 101. Also in the case of a variant such as this, the principle according to the invention with respect to the transformation of thermal energy into a high frequency signal, works perfectly. The advantage of a thermal coupling between the pyroelectric body 101 and the piezoelectric plate 110 of the surface wave device is described below, as regards the possibility linked to the above of the measurement of the corresponding temperature value. Also with reference to the foregoing, it is of particular interest for the invention to use a integral one piece plate as substrate 101 and platelets 110 for the surface wave device, namely, unicrystalline lithium tantalate, unicrystalline lithium niobate or the like . As shown in Figures 4a and 4b, the reverse (lower) of the body of the substrate 101, preferably, is metallized over its entire surface, for example, with aluminum (42). In the variant according to Figure 4b, the opposite upper side of the body of the substrate 101 preferably also is metallised over its entire surface (41). In the variant according to Figure 4a, the portion of the substrate body 101, which functionally acts / functions here as a piezoelectric plate 110, is cut in the upper metallisation, namely to accommodate the remaining structures in this sectioned surface. to describe later. In the variant according to the Figure 4b, these structures are arranged in the separate plate 110. A decoupling of mechanical-thermal stresses between the parts 101 and 110 is achieved when the plate 110 is fixed in the body 101, instead of the previously described, with wires of union in themselves necessary. An electrode for a spark gap is indicated respectively with 13 and 14, which, as seen in the figures, are directed to each other with pointed tips. The spark electrode 13 is electrically connected to the metallization 41. The spark electrode 14 is electrically connected as a counter electrode to a metallization 15, which, in turn, is connected via lines and a throttling coil 19 still to be described. in detail, with a ground connection 18, which is again connected to the metallization 42 on the back of the substrate 101. If between both electrodes 41 and 42 a pyroelectric voltage is formed, this is between the sparking electrodes 13 and 14 and, because to the characteristic line of non-linear ignition of this disruptive distance, the discharge occurs only from an accumulated pyrotension value, predetermined by the geometry of the spark electrodes 13 and 14. The aforementioned throttle 19 serves as a direct current line / low pass filter, This strangulation is preferably a meander or spiral structure arranged as conductive bands on the surface of the plate 110. In particular with the first variant (Figure 4a) shown and described of the embodiment of a device according to the invention, the temperature can be measured simultaneously. The substrate 101 and the plate 110 functionally contained and in parts thereof are thermally coupled to the thermal source, otherwise due to the pyroelectric effect. That is, the zone 110 of the surface wave structure 22/23 adopts the temperature of the thermal element to be measured with the device according to the invention. The OFW construct element generates a high frequency signal dependent on the temperature. That is to say, that the encoded signal emitted contains the information of the momentary temperature of the platelet (and with it, of the thermal element). The temperature of the thermal element can be determined from the coded signal in the reception location or in a reception and evaluation unit of the emitted wave. To achieve this in the second variant, the plate 110, in this case separated, is thermally coupled separately with the thermal source (the thermal element or the like). By a corresponding configuration of the spark gap of the electrodes 13 and 14 and of the thermal contact of the device with the thermal source (the thermal element), that is to say by adjusting the thermal supply in the pyroelectric substrate 10, it can be selected, or determining a predeterminable time sequence of consecutive sparking steps. In this way, the rate of signal emission is given by the antenna 24. Since the central receiving location must register a plurality of measuring points like this, ie the input signals of various measuring points, itself it would be necessary to encode in time the emission of signals from each measurement point. However, actually, of the various measurement points, the control unit must receive a transmission pulse of only microseconds, that is, the rhythm ratio of the emission pulse and the distance in time of the pulses, is extremely small. Therefore, an emission coincidence of two different measuring points is extremely unlikely and no unnecessary electrical contamination is formed. In the invention, an encoding is especially provided with the pattern of the reflective structure 23 in the OFW constructive element. The diversity of possible codes is extraordinarily large, as is known from these band patterns. With a device according to the invention, the identification by the central unit of a single measuring device like this is not a problem. The device according to the invention can thus be accommodated in an integrated manner in a very small substrate surface 101. In this way, it is easily handled and can be placed without problems in the most diverse places, even inaccessible. Thanks to the integrated construction, the device can also be manufactured economically. The example indicated here of a thermal meter, can also be transferred, without problems, to corresponding piezo elements or other ceramic converters or made of semiconductors, for the primary energy to be used. The radio reception station with signal evaluation already mentioned several times is part of a system that works with a device according to the invention.

Within this system, no wire connection is required between the device and the receiving station, and the device itself does not require any electrical power supply from the outside, even though it does not contain any electric batteries. However, a special case is indicated, in which a device that makes use of the invention, does contain a battery, which, however, is reloaded throughout the duration (without external power supply), by low frequency electric energy as described herein, generated in accordance with the invention. The autarky of the device, obtained in this way, is entirely due to the use of the invention.

List of references Converter 11 Low frequency energy transformer to high frequency energy 12 Filter / coding device 13/14 Spark electrodes 15 Metallization 19 Throttling 20 Inductivity 22 Interdigital converter 23 Reflective bands 24 Antennas 41 Superior electrode 42 Bottom electrode 101 Substrate 110 Platelet piezoelectric

Claims (25)

NOVELTY OF THE INVENTION Having described the above invention, it is considered as a novelty, and therefore, the content of the following is claimed as property: CLAIMS

1. A device for generating high frequency coded signals, with - a converter (10), which transforms a non-electric primary energy (P) available by the process or the environment of the device, into low frequency electrical energy, - an element ( 11) with non-linear characteristic line, for the transformation of low frequency electric energy into high frequency electric energy, in the form of a high frequency signal, - a coding device (23) for generating a coded signal from high-frequency electric power, and - a filter (12) disposed between the element (11) and the coding device (23), for the selection of a narrow-band signal from high-frequency electric power, or with a coding device, which has corresponding additional filtering properties.

2. A device according to claim 1, characterized in that the coding device (12, 23) is sensitive to at least one parameter of the environment and that in the encoded signal it is possible to print information about the type and / or the magnitude of this environment parameter.

3. A device according to claim 1 or 2, characterized in that the converter (10) is configured for the conversion of mechanical primary energy (P) into electrical energy.

4. Device according to claim 3, characterized in that the converter (10) is configured as piezoelectric element, as an induction device, especially with magnet and electric coil, or for the generation of electrostatic charge.

5. A device according to claim 1 or 2, characterized in that the converter (10) is configured for the conversion of primary thermal energy (P) with gradients of time or place, into electrical energy.

6. A device according to claim 5, characterized in that the converter (10) is configured as a pyroelectric element (101) or as a thermocouple device.

7. A device according to claim 1, characterized in that the converter (10) is configured as a component sensitive to infrared radiation, visible or ultraviolet light.

8. Device according to claim 1, characterized in that a discharge element (13, 14) is provided as element (11) with non-linear characteristic line.

9. A device according to claim 8, characterized in that a spark gap or gas discharge tubes are provided as discharge element (13, 14).

10. A device according to claim 10, characterized in that as an element (11) with non-linear characteristic line, a semiconductor construction element is provided, which shows a rapid variation of resistance in the case of a limit voltage.

11. A device according to claim 10, characterized in that a diode working in block-break, a varactor diode, an avalanche semiconductor element or a thyristor is provided as element (11).

12. A device according to claim 1 in any of claims 1 to 7, characterized in that a relay is provided as element (11) with non-linear characteristic line.

13. A device according to claim 12, characterized in that the relay is configured as silicon micro-relay or as a relay with piezoelectric tab.

14. A device according to claim as claimed in any of claims 1 to 13, characterized in that an electroacoustic converter (110) is provided as a filter (12) and / or as a coding device.

15. A device according to claim 14, characterized in that the electroacoustic converter is configured as an OFW device (110) or as a device that works with shear waves or with waves close to the surface.

16. A device according to claim as claimed in claim 15, characterized in that the device OFW (110) is configured as a resonator device, as a delay line, as a dispersive delay line or as a derived delay line.

17. A device according to claim 1, characterized in that the coding device (12) is configured to perform a pulse compression for the interference-proof transmission of the coded signal.

18. Device according to claim 1, characterized in that a dielectric filter, a mechanical filter, a ceramic filter, a coaxial ceramic filter, a volume oscillator are provided as filter (12). or an LC filter.

19. A device according to claim 1 in any of claims 1 to 18, characterized in that it is coupled with an antenna (24) to emit the encoded signal and to control / drive a receiving device.

20. A procedure for generating high frequency coded signals by means of - the transformation of a non-electric primary energy (P) available from a process or from the environment of the device, into low frequency electric energy, through friction, piezoelectric effect, pyroelectric , thermoelectric, photoelectric, photovoltaic or electrodynamic, - the transformation of this low frequency electrical energy, by means of an element (11) with nonlinear characteristic line, into high frequency electrical energy, - eventually, the filtering of a high frequency signal Narrowband from a higher bandwidth high frequency energy, and - the printing of a coding in the narrow band high frequency signal.

21. A method according to claim 20, characterized in that a coding device (23) sensitive to at least one environment parameter is used, which generates the coding of the narrowband high frequency signal, depending on of the type and magnitude of the environment parameter.

22. A method according to claim 20 or claim 21, characterized in that a force, pressure, temperature, radiation, impedance jump, type or concentration act on the coding device as a parameter of the environment. of gases, liquids, vapors, chemical or biological substances, generating a coding of the narrow band high frequency signal, dependent on the environmental parameter.

23. The use of the device according to claim 1 in any of claims 1 to 19, as a switch for an electrical device that reacts and / or switches by radio.

24. The use of the device according to claim 1 of any of claims 1 to 19 for radio transmission to a signal monitoring device specifically encoded for the transmitter.

25. The use of the device according to claim 1 in any of claims 1 to 19, as a sensor for an environment parameter, with wireless data transmission, active without additional power supply.