45results about How to "Realize series connection" patented technology

The invention provides an RFID antenna polling switch device which ensures that a plurality of antennas simultaneously connect to a radio-frequency port of a reader-writer and realize the automatic polling of an antenna array in order to realize time-sharing drive of each antenna to read electronic tags in a coverage area. The invention realizes that one antenna polling switch device or a plurality of antenna polling switch devices are connected in series between the reader-writer and the antennas which are separate from each other; a periodic pulse signal is generated through a timing circuit of the device; a periodic communication and disconnection of at least one mechanical switch are driven so that the radio-frequency port of the reader-writer and a plurality of reader-writer antenna can be communicated in a cycle and time-sharing operation is carried out by each antenna; the invention can solve the problem of collision produced in controlling a processing module and can ensure that the effective power of the antenna is not reduced, thereby achieving a larger reading range and a better reading effect. The RFID antenna polling switch device has simple structure, reliable performance and low cost and can be applicable for the management of warehouses, libraries, etc, in particular for making a periodic inventory of goods or books in different positions of a goods shelf or a bookshelf.

The invention discloses a laminated polymer solar cell, which comprises a base plate, an anode layer, an anode modification layer, a first active layer, a cathode modification layer, a cathode layer and an intermediate electrode consisting of an electronic transport layer, a metal layer and a hole transport layer, wherein the intermediate electrode consists of an n-type metallic oxide electron transport layer and a p-type metallic oxide hole transport layer which are high in light transmittance. A thin layer of metal is inserted between the two metallic oxides and the effective combination of electrons and holes. The active layers of up and down two sub-cells of the laminated polymer solar cell are mixtures of identical or different conjugated polymers. The open circuit voltage of the laminated solar cell is the sum of the open circuit voltages of the up and down two sub-cells, so the serial connection of polymer photovoltaic cells is realized. The combined intermediated electrode structure can be wildly used in laminated devices with active layers made of conjugated polymers of different light absorption ranges, so as to well match the light absorption of the whole cell with the solar spectrum and improve the energy conversion rate.

The invention discloses a series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. The device comprises a bottom self-lubricating magnetic guide rail plate, a bottom magnetic yoke outer annular column, arc section circular ring sleeve keys, a bottom magnetic yoke anisotropic bar, disc-shaped springs, bottom inner column magnet exciting coils, bottom outer column magnet exciting coils, a bottom working clearance, a soft magnetic metal sealing plate, overlapped magnetorheological elastomers (MREs), overlapped magnetic conductive steel plates, an I-shaped iron connecting plate, bearing frame columns, an II-shaped iron connecting plate, a mass array, upper inner column magnet exciting coils, upper outer column magnet exciting coils and an upper working clearance; a negative stiffness system and a positive stiffness system form a basic power outputting unit of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device. With the adoption of the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device, the shortages of narrow controllable broadband of a traditional passive vibration absorber, unadjustable performance, and complex active vibration absorbing assisting system. Compared with an existing intelligent vibration absorbing device, the series-stiffness, broadband and magnetorheological intelligent vibration absorbing device can reduce the low-frequency interference of flexible demands and high frequency vibration of rigid demand, applies a plurality of working conditions, and has a good economic advantage.

The invention discloses a fixing clamp for laser service life testing. The fixing clamp comprises a plurality of metal bases which are arranged side by side, insulating pieces, metal foundation bases and metal connecting pieces. Each insulating piece is arranged between every two adjacent bases. Each metal foundation base is arranged on the corresponding base to be used for fixing a laser. Each metal connecting piece is connected with lasers on two adjacent bases. Non-lead-wire series connection of a plurality of devices is achieved, and large-batch testing on the lasers can be achieved. In addition, the fixing clamp is easy to manufacture and low in cost and has high using value in production.

The invention relates to the field of lithium batteries, in particular to a solid-state electrolyte, a lithium battery cell and a lithium battery. The solid-state electrolyte is an anti-perovskite solid-state electrolyte, and includes one or more super base clusters selected from Li3Se+, Li3S+ and Li3O+ and one or more super halogen clusters selected from BH4-, AlH4-, BF4-, FeH4-, CoH4- and NiH4-.The solid-state electrolyte exhibits a nanowire morphology. Therefore, the solid-state electrolyte has an electrochemical window above 5V and excellent interfacial adhesion, wettability and lithium ion conductivity, and the molecular skeleton of the solid-state electrolyte has good tolerance. Based on the structural characteristics of the solid-state electrolyte, the solid-state electrolyte has the advantages of high shear modulus, high Young's modulus and capability of inhibiting the growth of lithium dendrites.

The invention relates to the field of a lithium battery, specifically a lithium battery cell, a lithium battery and a preparation method thereof. A current collector comprises a front positive surfaceand a negative electrode surface which are arranged oppositely, wherein a lithium oxide-containing columnar crystal positive electrode layer is formed on the positive electrode surface to be used asthe positive electrode structure of the lithium battery cell; a lithium silicon carbon composite negative electrode layer is formed on the negative electrode layer; by taking the lithium oxide-containing columnar crystal with high voltage and high capacity characteristics as the positive electrode material, the high capacity density lithium battery cell and lithium battery can be obtained; by setting positive and negative electrodes of two different lithium battery cell units on the two surfaces of the current collector, the current collectors with shared positive and negative electrodes are formed, so that stacking preparation of multiple lithium battery cell units can be realized, thereby realizing preparation of the high capacity lithium battery; and the current collector also can be directly used as an external electrode of the lithium battery, so that the packaging structure of the lithium battery can be simplified.

The invention relates to a nitrogen-self-generating storage system. The nitrogen-self-generating storage system comprises a storage space and is characterized in that the nitrogen-self-generating storage system further comprises an electronic sieve oxygen generation module; the electronic sieve oxygen generation module comprises an oxygen generation membrane and a gas outlet channel; the interiorof the storage space communicates with the oxygen generation membrane so as to adsorb oxygen in air in the storage space, and thus nitrogen in the air is left in the storage space; the electronic sieve oxygen generation module has the characteristics of adsorbing and collecting the oxygen in the air, and when being combined with any object with a storage space, the electronic sieve oxygen generation module can rapidly absorb and collect oxygen in the storage space and reserves nitrogen in the storage space for refreshment and preservation of food, valuables and the like; and the system can bewidely used for transportation and logistics, cultural relic storage, refrigerator preservation, food refreshment and quality preservation and the like.

The invention provides a lightweight power battery pack. The lightweight power battery pack comprises a box body and a plurality of battery module groups arranged in the box body, and the box body comprises an upper sheet plastic cover plate and a lower cast aluminum box body matching with the upper sheet plastic cover plate; every battery module comprises a battery stack formed by vertically stacking a plurality of battery modules and copper sheets, copper bars arranged at two ends of the battery stack, an insulating plate, a supporting plate, and a plurality of screws; the copper sheets are arranged between every two adjacent battery modules; and the copper bars are arranged at the outer side of the battery stack, the insulating plate is arranged at the outer side of the copper bars, the supporting plate is arranged at the outer side of the insulating plate, the battery stack, the copper bars, the insulating plate and the supporting plate are provided with connecting holes corresponding to the screws in quantity, and the screws traverse through the connecting holes on the battery stack, the copper bars, the insulating plate and the supporting plate to connect the battery stack, the copper bars, the insulating plate and the supporting plate into one body. The lightweight power battery pack has the advantages of effectively improved integration level and energy density, improvement of the production efficiency and the safety of the battery module group, and reduction of the production cost.

The invention relates to the field of lithium batteries, in particular to a solid-state electrolyte, a lithium battery cell and a lithium battery. The solid-state electrolyte is an anti-perovskite solid-state electrolyte, and includes one or more super base clusters selected from Li3Se+, Li3S+ and Li3O+ and one or more super halogen clusters selected from BH4-, AlH4-, BF4-, FeH4-, CoH4- and NiH4-.Therefore, the solid-state electrolyte has an electrochemical window above 5V and better adhesion and flexibility, and has better interfacial wettability and interfacial adhesion when contacting an electrode layer. Because the Se atoms are weakly bound to Li+ in the structure of the solid-state electrolyte, Li ions are easy to migrate, and better conductivity can be obtained. Furthermore, based on the structural characteristics of the solid-state electrolyte, the solid-state electrolyte has the advantages of high shear modulus, high Young's modulus and capability of inhibiting the growth of lithium dendrites.

The invention discloses a combined wiring terminal component which is formed through assembling at least two independent wiring terminals, each wiring terminal comprises an insulating casing in which a conductive metal plate connected with a conducting wire is arranged; buttons used for realizing off-line of the conducting wires and the conductive metal plates are arranged on the housing; and conducting devices used for connecting and conducting all conductive metal plates or adjacent conductive metal plates are arranged on the wiring terminal component. According to the invention, with the conducting devices, the conductive metal plates required to be connected and conducted can be connected in series; and parallel connection of all conducting wires is realized as long as the conducting wires are inserted into the corresponding wiring terminals to be connected with the conductive metal plates. According to the combined type wiring terminal component, only one or two procedure(s) is (are) added during production, barely changing the structure of the original wiring terminal; and the wiring is convenient, and the requirement of realizing parallel connection of all conducting wires in one attempt is met.

The invention discloses a power supply system for a refrigeration container in a railway storage yard. The power supply system comprises a power supply pile arranged on the floor at the edge of the railway storage yard, and further comprises a container power supply conversion switch, a container power supply socket and a power supply pile power supply socket which are arranged on the side surfaceof the bottom of the first layer of container side by side, wherein two or multiple layers of containers can be stacked at the top of the first layer of container according to a matching result of the area of the railway storage yard and the number of containers on a train; and container power supply conversion switches, container power supply sockets and power supply pile power supply sockets are arranged on the side surfaces of the bottoms of the two or multiple layers of containers side by side. According to the power supply system for the refrigeration container in the railway storage yard, a "one pile to two box" or "one pile to multiple boxes" power supply mode that charging pile supplies power to the containers and / or the charging pile supplies power to the first layer of containerand the first layer of container supplies power to the two or multiple layers of containers is realized, so that a refrigeration container power supply scheme is optimized, which makes the power supply mode for refrigeration containers is more flexible, and the power supply fault rate is reduced.

The invention relates to the field of lithium batteries, in particular to a current collector structure, a lithium battery cell and a lithium battery comprising the same. The current collector comprises two opposite main surfaces. A columnar crystal positive electrode layer is formed on one main surface to be used as a positive electrode structure of a lithium battery cell. The lithium battery cell and the lithium battery provided by the invention can be used to realize series or parallel connection of multiple lithium battery cells. By setting positive and negative electrodes on the two sidesof current collectors to form current collectors with shared positive and negative electrodes, multiple lithium battery cells can be prepared by lamination, and large-scale preparation and promotionof a low-cost all-solid lithium battery can be realized. Moreover, the current collector can be directly used as the electrodes of the lithium battery, and thus, the packaging structure of the lithiumbattery is simplified.

The invention belongs to the technical field of solar cells, and particularly discloses a polymer solar cell fabric and a preparation method thereof. A titanium wire coated with a nanometer zinc dioxide layer is taken as a negative electrode, the negative electrode is coated with an active layer and a hole transport layer respectively through a pulling and dip-coating method, and finally knittingis carried out by taking the coated titanium wire and a cotton thread as warp threads and a silvering nylon multifilament and a cotton thread as weft threads so as to form the flexible and ventilatedpolymer solar cell fabric. The photoelectric conversion efficiency of the single polymer solar cell in the fabric can reach 1.62%. The open-circuit voltage of five series devices can be 2.1 V by adjusting the number of polymer solar cells knitted into the fabric, and the short-circuit current of five parallel devices is 0.23 mA. The preparation technology is simple and low in cost, the prepared product is high in flexibility and good in ventilation, and the fabric can be applied into daily life of people as a portable power supply device for clothes.

The invention provides a thermoelectric refrigerator, a preparation method of the thermoelectric refrigerator and electronic equipment. The thermoelectric refrigerator comprises two single crystal silicon substrates arranged oppositely and a plurality of semiconductor thermoelectric particles located between the two single crystal silicon substrates, wherein one side, facing the semiconductor thermoelectric particles, of each single crystal silicon substrate is provided with an insulating layer, and a conducting sheet is arranged between the insulating layer and the semiconductor thermoelectric particles, and is electrically connected with the semiconductor thermoelectric particles, so that the semiconductor thermoelectric particles can form a series connection circuit, wherein due to the fact that the semiconductor thermoelectric particles have the thermoelectric effect, the two monocrystalline silicon substrates of the thermoelectric refrigerator can conduct refrigeration and heating respectively. According to the invention, the monocrystalline silicon substrate is used as the substrate of the thermoelectric refrigerator, and the cost of the monocrystalline silicon substrate is low, so that the cost of the thermoelectric refrigerator is low.

The invention discloses a serial-in parallel-out wireless power transmission system and a control method thereof. The serial-in parallel-out wireless power transmission system comprises a first wireless power transmission module, a second wireless power transmission module, a transmitting end controller and a receiving end controller, the input end of the first wireless power transmission module is connected with the input end of the second wireless power transmission module in series, and the output end of the first wireless power transmission module is connected with the output end of the second wireless power transmission module in parallel; each wireless power transmission module adopts a single-stage control mode, so that the system structure is simplified, the loss is reduced, and the system transmission efficiency is improved; an input series connection mode is adopted, so that the voltage stress of an MOS tube is reduced under the condition of the same input voltage, the designdifficulty of a loose coupling transformer coil under the condition of low voltage output is also reduced, and the output capacity of the system is effectively improved by adopting a parallel connection output mode; and high-efficiency, reliable and balanced work of the system is realized through multi-loop control of input voltage, output voltage and output current in combination with a frequency conversion and phase shift control technology.

The invention relates to the technical field of aerostats, and discloses a series-type tethered aerostat and a releasing method thereof. The series-type tethered aerostat comprises (n+1) aerostat bodies used for forming a multilevel series structure and further comprises n auxiliary cables, wherein n is a positive integer; each aerostat body is correspondingly provided with a main cable, the maincables are further provided with auxiliary connecting positions used for connecting the first ends of the auxiliary cables, and the second ends of the auxiliary cables are detachably connected to auxiliary take-up and pay-off mechanisms; and the first end of the n main cable is connected with the n aerostat body, and the second end of the n main cable is provided with a detachable connector which is used for being connected with a main take-up and pay-off mechanism or the n+1 aerostat body. According to the series-type tethered aerostat, by arranging the auxiliary cables, series-type connection of the multiple aerostat bodies is achieved, the lift-off height is high, and the loading capacity is high; and according to the releasing method, two times of buoyancy transfer of the n aerostat body is achieved through the n auxiliary cable, and thus series-type connection and releasing of the multiple aerostat bodies are achieved conveniently and quickly.

The invention relates to a metal alloy series-connected imbricated photovoltaic module battery string and a preparation method thereof. The imbricated photovoltaic module battery string is provided with a plurality of battery pieces; the front surface of each battery piece is provided with a front surface electrode, and the back surface of each battery piece is provided with a back surface electrode; the front surface electrode comprises a front fine gate electrode, a front main gate electrode and a front side main gate electrode, the front fine gate electrode is connected with the front main gate electrode, and the front main gate electrode is connected with the front side main gate electrode; and the main gate electrode on the front side of the previous cell and the electrode on the back side of the next cell are partially stacked and are connected together at the stacking part through the molten and solidified metal alloy to form series connection. According to the invention, the metal alloy is used for replacing traditional conductive adhesive, so that the problems of aging and resistance increase caused by long-term operation can be effectively solved, and meanwhile, the problem of fire caused by resistor heating can also be effectively solved.

The invention relates to a vehicle-mounted hydrogen supply system pipeline system. The system comprises a hydrogen filling module, a hydrogen storage module and a hydrogen supply module, the hydrogenfilling module is connected to the hydrogen storage module through a hydrogen pipeline, and the hydrogen storage module is connected to the hydrogen supply module through a hydrogen pipeline. The hydrogen supply module is connected to a fuel cell, and the hydrogen storage module comprises a hydrogen storage bottle and a bottle valve assembly; the bottle valve assembly comprises a bottle valve mounted at a bottle opening of the hydrogen storage bottle, and a first one-way valve, a stop valve and an overflow valve which are integrated on the bottle valve and are sequentially connected in seriesbetween the bottle valve and the bottle opening of the hydrogen storage bottle, and the first one-way valve is connected with an electromagnetic valve in parallel; and the bottle valve is provided with an air inlet and an air outlet, so that a plurality of hydrogen storage bottles are connected in series. Compared with the prior art, the system has the advantages of safety, reliability, simple process, low cost, few leakage points and the like.

The invention provides a low noise amplifying circuit and a radio frequency receiving front end circuit. The low noise amplifying circuit comprises: a first amplifying component, wherein a first inputend of which accesses a radio frequency input signal and amplifies the same; a second amplifying component, wherein the first input end of which accesses a radio frequency input signal and amplifiesthe same; a first selection circuit, wherein an output end of the first amplifying component is connected with a first load end or a second load end through the first selection circuit; a second selection circuit, wherein the output end of the second amplifying component is connected with the first load end or the second load end through the second selection circuit; an inductor, wherein one end of which is coupled to second input ends of the first amplifying component and the second amplifying component, and the other end of which is grounded; and an inductor adjusting circuit coupled to theinductor and suitable for adjusting the inductance value of the inductor. By adoption of the technical scheme of the invention, the gain and the noise performance of the low noise amplifying circuit in a carrier aggregation working mode can be improved.

The invention provides an insertion-type double-face die bond all-round LED power type lamp filament module. The module comprises a transparent substrate, connecting lines and multiple LED lamp filaments. The connecting lines comprise the first line, the second line and the third line, wherein the first line and the second line are combined on the first face and the second face of the transparent substrate respectively, and the third line is combined on the side face of the transparent substrate and connected with the first line and the second line. The first line and the second line respectively comprise multiple rows of connecting line buses connected in series. The connecting line buses comprise multiple connecting sections which are formed by multiple partitioning bands in a partitioning mode. The LED lamp filaments are connected to the connecting sections at the two ends of each partitioning band of the first line and the second line in a crossover mode so that the first line, the second line and the LED lamp filaments can be connected in series. The transparent substrate is adopted, the unique double-face die bond structure is adopted for achieving all-round light emitting of the high-power LED module, the space utilization rate of the component can be greatly increased, and the light emitting brightness of the component can be greatly improved. The structure is simple, and industrialization is easy to achieve.

The embodiment of the invention discloses a refrigeration system of a low-temperature storage device, the low-temperature storage device and a control method. The refrigeration system of the low-temperature storage device comprises a compressor, a condenser, an electric control module, an electric control valve and N evaporators, wherein N is an integer greater than 1, an inlet of the electric control module is connected with the condenser, N outlets of the electric control module are connected with a gas suction ports of the compressor through N refrigerant main paths correspondingly, one corresponding evaporator is arranged on each refrigerant main path, a refrigerant branch is arranged between the refrigerant main paths where any two evaporators are located, the refrigerant branches areconnected with the electric control valve, when the any two evaporators are the first evaporator and the second evaporator, the inlet of the electric control valve is connected with the outlet of thefirst evaporator, the first outlet of the electric control valve is connected with the inlet of the second evaporator through the corresponding refrigerant branch, and the second outlet of the electric control valve is connected with the gas suction port of the compressor.

The invention discloses a connecting plate and a solid oxide fuel cell / electrolytic cell stack, and belongs to the field of solid oxide fuel cells / electrolytic cells. The connecting plate is provided with a plate-shaped body, a first surface and a second surface, wherein the first surface and the second surface are arranged oppositely. The first surface of the plate-shaped body is provided with a groove for placing a single fuel cell / electrolytic cell, and the second surface of the plate-shaped body is provided with a plurality of flow channels for realizing gas introduction. Through cooperation of the groove and the flow channels, series connection of a plurality of self-sealing solid oxide fuel cells / electrolytic cells can be realized only through single-side sealing, and a solid oxide fuel cell / electrolytic cell stack is formed. By adopting the connecting plate, the packaging difficulty of the cell stack is reduced, the thermal stress in the running process of the cell stack is reduced, and the service life of the cell stack is prolonged.

The invention discloses a spindle cooling structure with annular cooling and axial cooling connected in series and a machine tool. The spindle cooling structure mainly comprises a spindle sleeve. A cooling loop on the spindle sleeve is formed by connecting two parts in series, namely a spiral groove cooling pipeline and axial hole cooling pipelines sequentially connected in series, and the two parts of pipelines are connected in series to form the circulating cooling loop. The cooling pipeline at the position of a spiral cooling groove and the cooling pipelines formed by connecting the multiple axial holes in series are connected in series to form the complete cooling loop, and cooling liquid entering the cooling loop flows in a circulating manner.

The invention provides a charging circuit which comprises a plurality of batteries and a switch module. The switch module is connected with the plurality of batteries, and the switch module is used for receiving a first control signal to enable the plurality of batteries to be connected in series so that a charging power supply directly charges the plurality of batteries through a charger. The invention also provides a charging system and a mobile terminal. According to the charging circuit, the charging system and the mobile terminal provided by the invention, rapid charging with the charging power of more than 20W can be realized, a rapid charging chip is not needed, and the purposes of saving the rapid charging chip and saving the cost are achieved.

The invention relates to the field of lithium batteries, in particular to a solid electrolyte and a lithium battery cell with the solid electrolyte, and a lithium battery. The solid electrolyte comprises Li3Sn2(PO4)3 and / or Li3Ge2(PO4)3. The solid electrolyte has a stable structure, has an electrochemical window of above 5V, has better adhesion and flexibility, and has better interface wettabilityand interface adhesion when contacting an electrode layer. The Se and Ge atoms in the structure of the solid electrolyte are weakly bound to Li+, so that the Li ions are easier to migrate, and betterconductivity can be obtained. Furthermore, based on the structural characteristics, the solid electrolyte has the advantages of high shear modulus, high Young's modulus and capability of inhibiting the growth of lithium dendrites.

The invention discloses a laminated polymer solar cell, which comprises a base plate, an anode layer, an anode modification layer, a first active layer, a cathode modification layer, a cathode layer and an intermediate electrode consisting of an electronic transport layer, a metal layer and a hole transport layer, wherein the intermediate electrode consists of an n-type metallic oxide electron transport layer and a p-type metallic oxide hole transport layer which are high in light transmittance. A thin layer of metal is inserted between the two metallic oxides and the effective combination ofelectrons and holes. The active layers of up and down two sub-cells of the laminated polymer solar cell are mixtures of identical or different conjugated polymers. The open circuit voltage of the laminated solar cell is the sum of the open circuit voltages of the up and down two sub-cells, so the serial connection of polymer photovoltaic cells is realized. The combined intermediated electrode structure can be wildly used in laminated devices with active layers made of conjugated polymers of different light absorption ranges, so as to well match the light absorption of the whole cell with the solar spectrum and improve the energy conversion rate.

The invention provides a dual-spindle solar tracker which comprises a first standing column (6.1), a second standing column (6.2), a main beam (3), a truss (4), a push-and-pull mechanism and a connection rod (8), wherein a rotation mechanism (2) is mounted at the upper end of the first standing column (6.1); a bearing (5) is mounted at the upper end of the second standing column (6.2); one end of the main beam (3) is fixed with the rotation mechanism (2), and the other end of the main beam (3) is mounted in a bearing hole of the bearing (5); the truss (4) is arranged between the first standing column (6.1) and the second standing column (6.2); a truss rotating shaft (4.3) perpendicular to the main beam (3)is arranged on the truss (4); the truss (4) rotates around the truss rotating shaft (4.3); an arc-shaped part (4.4) is arranged on the truss (4); the push-and-pull mechanism is parallel to the main beam (3); and a first end of the connection rod (8) is connected with the push-and-pull mechanism, and a second end of the connection rod (8) is hinged with the arc-shaped part. The dual-spindle solar tracker is high in structural strength; and a solar cell panel faces downwards horizontally, and the cleaning and maintenance costs of the solar cell panel are reduced.

The invention relates to an apparatus (1) for determining and / or monitoring the temperature, comprising a first temperature sensor (17), a second temperature sensor (18) and electronics (14) which areconfigured to apply at least one electrical transmission signal (I S) in the form of an electrical current to the first temperature sensor (17) and / or the second temperature sensor (18) and to tap off at least one first and / or second electrical reception signal (U E1, U E2 ) in the form of an electrical voltage from the first temperature sensor (17) and / or the second temperature sensor (18). Theapparatus (1) also comprises at least six connection lines (19a-19f) for making contact, in particular electrical contact, with the first temperature sensor (17) and the second temperature sensor (18), wherein the connection lines (19a-19f) are arranged and configured in such a manner that the first temperature sensor (17) and the second temperature sensor (18) are connected in series and can havethe transmission signal (I S) applied thereto and in such a manner that the first reception signal (U E1) can be tapped off from the first temperature sensor (17) and / or the second reception signal (U E2) can be tapped off from the second temperature sensor (18).