Methods for detecting at least one sensor drift

Abstract

Method for detecting at least one sensor drift (delta_p) of a first sensor (10) in a hydrogen tank system (100), comprising the hydrogen tank system (100): - at least one first sensor (10) for measuring at least one first measured value (p1, T1), for example a first pressure (p1) that is specific to the hydrogen tank system (100), - a filling nozzle (50) for filling the hydrogen tank system (100) with hydrogen, wherein the filling nozzle (50) is connectable to a filling device (250) of a filling station (200) for filling, comprising the method: - Connecting (110) the filling nozzle (50) to a filling device (250) of a filling station (200) for filling the hydrogen tank system (100) with hydrogen, - Measuring (120) at least one first measured value (p1, T1) by the at least one first sensor (10) in the hydrogen tank system (100), - Measuring (130) at least one second measured value (p2, T2), for example a second pressure (p2) that is specific to the filling device (250), - Determine (140), by a control unit (HSCU) of the hydrogen tank system (100), a sensor drift (delta_p) of at least one first sensor (10) as a function of the first measured value (p1, T1) and the second measured value (p2, T2).

Description

[0001] The invention relates to a method for detecting at least one sensor drift with the features of the independent method claim, a hydrogen tank system with the features of the independent device claim, a computer program product with the features of the independent patent claim relating to a computer program product, a computer-readable data carrier with the features of the independent patent claim relating to a computer-readable data carrier, a control unit with the features of the independent patent claim relating to a control unit, and a vehicle with the features of the independent vehicle claim.

[0002] Hydrogen tank systems designed for storing hydrogen are well-known. These can be installed in a vehicle. Such hydrogen tank systems may need to be filled or refilled at a filling station. To detect this and / or other situations, at least one sensor, for example for pressure and / or temperature, can be integrated into the hydrogen tank system.

[0003] The current state of the art has its drawbacks. Sensors are exposed to various influences that can negatively affect the accuracy and / or reliability of their readings. These can include aging, contamination, icing, and / or wear. In such cases, while it may still be possible to acquire measurements, these may be inaccurate and / or incorrect, a phenomenon known as sensor drift. Furthermore, the readings from a sensor exhibiting sensor drift may deviate from the actual values, such as temperature or pressure, present at the sensor. Existing systems and / or methods may not be able to detect and / or compensate for this drift sufficiently. Advantages of the invention

[0004] It is therefore an object of the present invention to overcome at least one of the disadvantages described above, at least partially. In particular, it is an object of the invention to provide an improved method for detecting sensor drift. Furthermore, it may be provided to make better use of (additional) information, reference values, and / or measured values. It may also be provided to enable improved compensation and / or acquisition of measured values.

[0005] The foregoing problem is solved by a method for detecting at least one sensor drift with the features of the independent method claim, a hydrogen tank system with the features of the independent device claim, a computer program product with the features of the independent patent claim relating to a computer program product, a computer-readable data carrier with the features of the independent patent claim relating to a computer-readable data carrier, a control unit with the features of the independent patent claim relating to a control unit, and a vehicle with the features of the independent vehicle claim. Further features and details of the invention will become apparent from the dependent claims, the description, and the drawings.Features and details described in connection with the method according to the invention naturally also apply in connection with the hydrogen tank system according to the invention, and / or in connection with the computer program product according to the invention, and / or in connection with the computer-readable data carrier according to the invention, and / or in connection with the control unit according to the invention, and / or in connection with the vehicle according to the invention, and vice versa, so that the disclosure relating to the individual aspects of the invention always refers to each other. In particular, advantages described within the scope of the first, second, third, fourth, fifth, and / or sixth aspect also apply to the first, second, third, fourth, fifth, and / or sixth aspect.

[0006] The above problem is solved according to a first aspect by a method for detecting at least one sensor drift of a first sensor in a hydrogen tank system (or a hydrogen tank system) comprising the hydrogen tank system: - at least one first sensor (installed) for measuring at least one first measured value, preferably a first pressure specific to the hydrogen tank system, - a filling nozzle (equipped) for filling the hydrogen tank system with hydrogen, wherein the filling nozzle is connectable to a filling device of an (external) filling station for filling, comprising the method: - Connecting (attaching / coupling) the filling nozzle to a filling device (e.g. a nozzle) at a filling station to fill the hydrogen tank system with hydrogen, - (First) measurement of at least one initial measurement value, in particular an initial pressure, by which at least one initial sensor in the hydrogen tank system, - (second) measurement of at least one second measured value, for example a second pressure that is specific to the filling device, - Determine, by a control unit of the hydrogen tank system, a sensor drift of at least one first sensor as a function of the first measured value and the second measured value.

[0007] The method according to the first aspect can be computer-implemented and / or performed repeatedly and / or continuously. Preferably, the method can be performed during, before, and / or (preferably) during the filling or use of a vehicle and / or control unit and / or a refueling station, for example, during a vehicle refueling stop. Alternatively or additionally, the method can be performed at (regular) intervals, for example, every hundred milliseconds. It can also be provided that the method is always and / or only performed during the filling of the hydrogen tank system, particularly at a refueling station. This prevents (undesired) overloading of the control unit at other times. This reduces the load on the processing unit and / or control unit.The control unit can implement the procedure, for example, by performing and / or controlling (e.g., corresponding sensors, interfaces, and / or actuators) the steps mentioned above. This procedure enables the efficient and / or more reliable detection of sensor drift. Furthermore, it can be implemented to compensate for sensor measurement data, particularly depending on detected sensor drift. This allows for more precise and / or improved operation, for example, of the hydrogen tank system and / or the vehicle. For instance, hydrogen shortages can be detected more effectively, accurately, and / or reliably. This can be advantageous for planning and / or determining refueling stops, for example, autonomously and / or automatically by the control unit.

[0008] The hydrogen tank system can be configured to store hydrogen. This hydrogen can be pressurized, in particular, it can have a first pressure, e.g., 700 bar. The hydrogen tank system can have at least one (or more) tank(s) in which the hydrogen is stored. A tank can have a valve (e.g., controllable via an actuator) to close the tank. The valve can be located, for example, at the tank inlet. It can be provided that a tank, in particular an inlet of the tank, has the first sensor. Alternatively or additionally, it can be provided that a distributor has a (further) first sensor. This allows (first) sensors to be located at different positions within the hydrogen tank system. The method can therefore be carried out for one or more of these sensors.This allows information to be generated based on the different sensors (e.g., characteristic curves). A tank, or in particular each tank, can be connected to the distributor, for example, via a tank inlet. The tank or distributor can be connected to a user system (e.g., a fuel cell) via a delivery line. The tank or distributor can be connected to a filling port (of the hydrogen tank system) via (at least) a first supply line, which is designed for filling with hydrogen, e.g., by connecting to a filling device. It can be designed so that the (first) pressure in the hydrogen tank system is essentially the same everywhere. It can also be designed so that the (first) pressure differs (at least slightly) at different locations.

[0009] It may be provided that the (first) measurement of a first measured value, in particular a first pressure and / or a first temperature, by the at least one sensor, preferably takes place after the filling nozzle has been connected to a filling device of an (external) filling station.

[0010] The (second) measurement of at least one measured value can preferably be carried out by a second sensor, which is located in the filling station, preferably in and / or on the filling device. This can therefore be an external sensor. Advantageously, this sensor can be used as a reference value and / or gold standard. This makes it easier and / or more effective to detect changes in the hydrogen tank system, particularly in the first sensor.

[0011] The measurement can be performed by a control unit of the hydrogen tank system. The sensor drift can be determined or ascertained as a function of the first (internal) measurement value of the first sensor and the second (external) measurement value of the second (external) sensor.

[0012] Within the scope of the invention, it can be advantageous that the connection includes establishing an (external) data connection between the control unit of the hydrogen tank system and an interface of the filling station, wherein preferably the filling station transmits at least one second measured value, for example a second pressure, and / or a second calculated value, in particular a diameter, a heat transfer coefficient, a coefficient of friction and / or a length of the filling device, which is specific to the filling device, to the control unit via the external data connection.

[0013] The second calculation parameter can also provide a mass of the (refueled) hydrogen and / or a mass flow rate of (refueled) hydrogen, as well as other parameters, measurements, and / or values. Depending on this, the control unit can calculate a modeled pressure loss and / or a modeled pressure, for example, based on simulation data and / or a (thermodynamic) model of the hydrogen tank system and / or the filling station, especially the filling device.

[0014] Within the scope of the invention, it is conceivable that the measurement of at least one first measured value, for example a first pressure, is carried out by the at least one first sensor in the hydrogen tank system, which is equipped for this purpose, wherein the measurement includes a transmission of the at least one first measured value, in particular via an internal data connection, to the control unit of the hydrogen tank system.

[0015] Within the scope of the invention, it may be provided that the measurement of at least one second measured value, for example a second pressure specific to the filling device, is carried out by a second sensor of the filling station, in particular of the filling device, which is equipped to measure the at least one second measured value, in particular to measure a second pressure.

[0016] Within the scope of the invention, it may be preferentially provided to use a first and / or second pressure. Alternatively or additionally, and in particular analogously, it may also be provided to use a first and / or second temperature. It is also conceivable that the method can be carried out for further / other sensors and / or sensor positions, for example, a third sensor in the distributor, in addition to a first sensor at the inlet of a tank and / or a second sensor in the filling device.

[0017] It is also conceivable that the determination includes calculating a modeled (or expected, simulated, calculated and / or predicted) pressure loss delta_p_mod as a function of at least one second measured value, and in particular as a function of the second calculated variable, where the pressure loss is specific to the filling station, in particular the filling device, and the hydrogen tank system.

[0018] Therefore, the following can apply: delta_p_mod=f(p2,D2,L2)

[0019] This can also be performed additionally or alternatively depending on a first calculated parameter specific to the hydrogen tank system (e.g., stored in a storage unit, system-specific), such as the lines and / or the position of the first sensor. In other words, based on the (already available) information about the hydrogen tank system and the information transmitted by the filling station, the control unit can calculate (e.g., using a parameterized model and / or a simulation, see also above) how the first measured value, in particular the first pressure (and / or the first temperature), within the hydrogen tank system (during filling) should be configured. For example, the geometric configuration of the hydrogen tank system can be stored and / or pre-simulated. Depending on the second measured value and / or the second calculated parameter, the system can then (e.g.,The modeled pressure loss can be calculated (using flow equations and / or simulations). Preferably, the first measured value can be validated or verified by comparing it with these values ​​(see below). Preferably, the modeled pressure loss can represent a pressure difference from the position of the second sensor (in the filling device) through the lines to the position of the first sensor. Thus, the modeled pressure loss can represent a calculated pressure loss between the position of the second sensor and the first sensor.

[0020] It is also conceivable that the determination includes calculating at least one modeled pressure, which is preferably specific for an expected first measured value, in particular for a first pressure, of the at least one first sensor, wherein the calculation of the modeled pressure is carried out as a function of the at least second measured value, for example a second pressure, and in particular a modeled pressure loss.

[0021] Preferably, the modeled pressure can be calculated by subtracting the (previously determined) modeled pressure loss from at least one second measured value, in particular the second pressure (by the control unit). In other words, the modeled pressure loss, for example, a pressure loss along the (supply) line and / or the filling device (at the filling station), can be calculated. The difference can then be used to determine how the pressure at the height and / or position of the at least one first sensor should be configured according to this pressure loss.

[0022] Therefore, the following can apply: p_mod=p2−delta_p_mod

[0023] Within the scope of the invention, it is optionally possible that determining a sensor drift of the at least one first sensor as a function of the first measured value and the second measured value includes determining a sensor drift as a function of a threshold value (previously defined, e.g. stored in the memory unit of the control unit), in particular comprising: - positive detection of sensor drift (e.g. sensor drift is present) if a difference, in particular the amount of the difference, between the at least one first measured value, in particular a first pressure, and the modeled pressure is greater than (or equal to) the threshold value, - negative detection of sensor drift (e.g. sensor drift is not present) if a difference, in particular the amount of the difference, between the at least one first measured value, in particular a first pressure, and the modeled pressure is less than (or equal to) the threshold value.

[0024] Therefore, the following can apply (for a positive finding): |p_mod−p1|>p_threshold

[0025] This allows for a (quantified and / or objective) determination of whether sensor drift, in particular an altered or falsified (initial) measurement, is present. Sensor drift can be detected using external information from the gas station.

[0026] Furthermore, within the scope of the invention, it may be provided that the determination includes calculating an adaptation value which is configured to provide a corrected first measured value as a function of the at least one first measured value, in particular the at least one first pressure, and in particular the sensor drift, wherein in particular the adaptation value is calculated by subtracting the at least one first measured value, in particular the at least one first pressure, from the modeled pressure.

[0027] Therefore, the following can apply: delta_p_off=p_mod−p1

[0028] This allows the deviation to be advantageously quantified (objectively and / or more accurately).

[0029] With regard to the present invention, it is conceivable that the determination includes calculating a corrected first measured value, wherein in particular the calculation is performed depending on the at least one first measured value, in particular a first pressure, and an adaptation value (or the above one), in particular by subtraction (or addition).

[0030] Therefore, the following can apply: pkorr=p1−delta_p_off

[0031] Accordingly, it may be possible to calculate a corrected first measurement value by subtracting the adaptation value from the at least one first measurement value. Therefore, (at least) one corrected first measurement value can be specific to an actual measurement value, in particular to an actual first pressure and / or temperature, which, for example, is actually present at the altitude and / or position of the at least one first sensor.

[0032] The method can be performed for various operating points, e.g., different pressures, temperatures, and / or times (for example, during refueling). This can result in a large number and / or a series of measured values ​​and / or corrected values. These can be compared with expected trends and / or historical data. For this purpose, the hydrogen tank system can be connected to a backend, preferably via a data connection. Historical data can be stored and / or retrieved there. It can also be provided that, for example, depending on the historical data and / or by comparison, a malfunction of at least one second sensor and / or the filling station is detected. It can also be provided that, within the scope of the invention, an incorrect or leaking connection between the filling device and the filling nozzle is detected, particularly depending on the determination.

[0033] The above problem is solved according to a second aspect by a hydrogen tank system according to the invention for detecting at least one sensor drift of a first sensor in the hydrogen tank system, comprising the hydrogen tank system: - at least one initial sensor for measuring at least one initial measurement value, for example an initial pressure specific to the hydrogen tank system, - a filling nozzle for filling the hydrogen tank system with hydrogen, wherein the filling nozzle is connectable to a filling device of a filling station for filling, wherein the hydrogen tank system is configured to implement the method according to one of the preceding claims.

[0034] The hydrogen tank system may preferably include a control unit, particularly as described in the fifth aspect. The hydrogen tank system may preferably implement and / or carry out the process in conjunction with a filling station.

[0035] This results in the same advantages with regard to a hydrogen tank system according to the invention as have already been described with regard to a method according to the invention.

[0036] The above problem is solved according to a third aspect by a computer program product according to the invention, comprising instructions which, when the computer program product is executed by a computer, cause it to implement the method according to one of the preceding claims.

[0037] This results in the same advantages with regard to a computer program product according to the invention as have already been described with regard to a method according to the invention and / or a hydrogen tank system according to the invention.

[0038] The above problem is solved according to a fourth aspect by a computer-readable data carrier according to the invention, in which instructions are stored which, when executed by a computer, cause it to carry out the method according to one of the preceding claims.

[0039] This results in the same advantages with regard to a computer-readable data carrier according to the invention as have already been described with regard to a method according to the invention and / or a hydrogen tank system according to the invention and / or a computer program product according to the invention.

[0040] The above problem is solved according to a fifth aspect by a control unit according to the invention, comprising a computing unit and / or a storage unit in which instructions are stored which, when at least partially executed by the computing unit, carry out a method according to one of the preceding claims.

[0041] The control unit can be configured to implement the procedure. For this purpose, the control unit can be connected, in particular via a data connection, to at least one of the following units: - at least the first sensor, - the filling station, in particular via an interface of the filling station, in particular the second sensor or the filling device, whereby this can be done in particular via cable and / or wirelessly, - the valves of the hydrogen tank system, and / or - the filling nozzle, in particular a filling sensor of the filling nozzle, which is designed to detect a filling device, in particular the arrangement of the filling device in the filling nozzle.

[0042] Preferably, information and / or initial calculation parameters can be stored in the control unit, in particular in a storage unit of the control unit.

[0043] This results in the same advantages with regard to a control unit according to the invention as have already been described with regard to a method according to the invention and / or a hydrogen tank system according to the invention and / or a computer program product according to the invention and / or a computer-readable data carrier according to the invention.

[0044] The above problem is solved according to a sixth aspect by a vehicle according to the invention comprising a control unit according to the preceding claim and / or a hydrogen tank system according to one of the preceding claims.

[0045] This results in the same advantages with regard to a vehicle according to the invention as have already been described with regard to a method according to the invention and / or a hydrogen tank system according to the invention and / or a computer program product according to the invention and / or a computer-readable data carrier according to the invention and / or a control unit according to the invention.

[0046] Further advantages, features, and details of the invention will become apparent from the following description, in which several exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination. Drawings

[0047] Each schematically illustrates: Fig. 1 a vehicle with a hydrogen tank system, Fig. 2 a hydrogen tank system and a filling station, and Fig. 3 a procedure.

[0048] In the following figures, identical reference numerals are used for the same technical features, even for different embodiments. Description of the exemplary implementations

[0049] Fig. Figure 1 shows a vehicle 300 with a hydrogen tank system 100, which has a control unit HSCU with a computing unit CU and a storage unit MU. The hydrogen tank system 100 may have a first sensor 10.

[0050] Fig. Figure 2 shows a hydrogen tank system 100 connected to a filling station 200. The hydrogen tank system 100 comprises one (or two or more) tank(s) 20 for receiving or storing hydrogen. The tank 20 can be connected to a distributor 30 and / or have a first sensor 10, particularly near the tank inlet. The sensor 10 can measure a first measured value p1, T1, in particular a first pressure p1. The hydrogen tank system 100 can have a control unit HSCU with a processing unit CU and a storage unit MU, which can be connected to the first sensor 10 via an internal data connection Dat_int. The hydrogen tank system 100, in particular the distributor 30, can be connected to a filling port 50 via a first (supply) line 40. Filling or refueling can take place via the filling port 50, for example by performing a connection 110.A filling device 250 of the filling station 200 can be connected to the filling nozzle 50. The filling station 200, in particular the filling device 250, can have a second sensor 210, which can be configured to measure 130 a second measured value p2, T2, in particular a second pressure p2. An interface 230, in particular of a control unit of the filling station 200, can be connected to the second sensor 210 via a data connection. The interface 230 can be connected to the control unit HSCU via an external data connection Dat_ext.

[0051] Fig. Figure 3 shows a method for detecting at least one sensor drift delta_p of a first sensor 10 in a hydrogen tank system 100, comprising the hydrogen tank system 100: - at least one first sensor 10 for measuring at least one first measured value p1, T1, for example a first pressure p1, which is specific for the hydrogen tank system 100, - a filling nozzle 50 for filling the hydrogen tank system 100 with hydrogen, wherein the filling nozzle 50 can be connected to a filling device 250 of a filling station 200 for filling, comprising the method: - Connect 110 of the filling nozzle 50 to a filling device 250 of a filling station 200 for filling the hydrogen tank system 100 with hydrogen, - Measure 120 of at least one first measured value p1, T1, in particular a first pressure p1, by which at least one first sensor 10 in the hydrogen tank system 100, - Measure 130 of at least one second measured value p2, T2, for example a second pressure p2 that is specific for the filling device 250, - Determine 140, by means of a control unit HSCU of the hydrogen tank system 100, a sensor drift delta_p of at least one first sensor 10 as a function of the first measured value p1, T1 and the second measured value p2, T2.

[0052] It may be provided that the connection 110 includes establishing 111 an external data connection Dat_ext between the control unit HSCU of the hydrogen tank system 100 and an interface 230 of the filling station 200, wherein preferably the filling station 200 transmits via the external data connection Dat_ext the at least one second measured value p2, T2, for example a second pressure p2, and / or a second calculated value D2, L2, in particular a diameter D2 and a length L2 of the filling device 250, which is specific for the filling device 250, to the control unit HSCU.

[0053] It may be provided that the measurement 120 of at least one first measured value p1, T1, for example a first pressure p1, is carried out by the at least one first sensor 10 in the hydrogen tank system 100, which is set up for this purpose, wherein the measurement 120 includes a transmission 121 of the at least one first measured value p1, T1, in particular via an internal data connection Dat_int, to the control unit HSCU of the hydrogen tank system 100.

[0054] It may be provided that the measurement 130 of at least one second measured value p2, T2, for example a second pressure p2, which is specific for the filling device 250, is carried out by a second sensor 210 of the filling station 200, in particular of the filling device 250, which is set up to measure 130 the at least one second measured value p2, T2, in particular to measure 130 a second pressure p2.

[0055] It may be provided that the determination 140 includes a calculation 141 of a modeled pressure loss delta_p_mod depending on the at least one second measured value p2, T2, and in particular depending on the second calculated variable D2, L2, wherein the pressure loss delta_p_mod is specific for the filling station 200, in particular the filling device 250, and the hydrogen tank system 100.

[0056] It may be provided that the determination 140 includes a calculation 142 of at least one modeled pressure p_mod, which is specific for an expected first measured value p1, T1, in particular for a first pressure p1, of the at least one first sensor 10, wherein the calculation 142 of the modeled pressure p_mod is carried out as a function of the at least second measured value p2, T2, for example a second pressure p2, and in particular a modeled pressure loss delta_p_mod.

[0057] It may be provided that determining 140 a sensor drift delta_p of at least one first sensor 10 as a function of the first measured value p1, T1 and the second measured value p2, T2 includes determining 143 a sensor drift delta_p as a function of a threshold value p_threshold, in particular comprising: - positive detection 144 of a sensor drift delta_p, if a difference, in particular the amount of the difference, between the at least one first measured value p1, T1, in particular a first pressure p1, and the modeled pressure p_mod is greater than the threshold p_threshold, - negative detection 145 of a sensor drift delta_p, if a difference, in particular the amount of the difference, between the at least one first measured value p1, T1, in particular a first pressure p1, and the modeled pressure p_mod is less than the threshold p_threshold.

[0058] It may be provided that the determination 140 includes a calculation 146 of an adaptation value delta_p_off, which is set up to provide a corrected first measurement p1_korr as a function of the at least one first measurement p1, T1, in particular the at least one first pressure p1, and the sensor drift delta_p, wherein in particular the adaptation value delta_p_off is calculated by subtracting 147 the at least one first measurement p1, T1, in particular the at least one first pressure p1, from the modeled pressure p_mod.

[0059] It may be provided that the determination 140 includes a calculation 148 of a corrected first measurement value p_corr, wherein in particular the calculation 148 is calculated as a function of the at least one first measurement value p1, T1, in particular a first pressure p1, and an adaptation value delta_p_off, in particular by subtraction. Reference symbol list 10 first sensor 20 Tank 30 distributors 40 first (supply) line 50 filling nozzles 100 hydrogen tank systems HSCU control unit CU computing unit MU storage unit Dat_int internal data connection 110 Connecting the filling nozzle to a filling device 111 Establishing an external data connection 120 Measuring at least one initial measurement 121 Transmitting at least one initial measurement 130 Measuring at least one second measurement 140 Determining sensor drift 141 Calculating a modeled pressure loss 142 Calculating a modeled pressure 143 Detecting sensor drift 144 positive detection of sensor drift 145 negative detection of sensor drift 146 Calculating an adaptation value 147 Subtraction 148 Calculating a corrected first measurement 200 gas station 210 second sensor 230 interface 250 filling device Dat_ext external data connection 300 vehicles p1, T1 first measured value p1 first print p2, T2 second measured value p2 second pressure D2, L2 second calculation parameter D2 Diameter of the filling device L2 Length of the filling device delta_p_mod modeled pressure loss p_mod modeled pressure p_threshold Threshold delta_p sensor drift delta_p_off adaptation value p_corr corrected first measurement

Claims

[1] Method for detecting at least one sensor drift (delta_p) of a first sensor (10) in a hydrogen tank system (100), comprising the hydrogen tank system (100): - at least one first sensor (10) for measuring at least one first measured value (p1, T1), for example a first pressure (p1) that is specific to the hydrogen tank system (100), - a filling nozzle (50) for filling the hydrogen tank system (100) with hydrogen, wherein the filling nozzle (50) is connectable to a filling device (250) of a filling station (200) for filling, comprising the method: - Connecting (110) the filling nozzle (50) to a filling device (250) of a filling station (200) for filling the hydrogen tank system (100) with hydrogen, - Measuring (120) at least one first measured value (p1, T1), in particular a first pressure (p1), by which at least one first sensor (10) in the hydrogen tank system (100) - Measuring (130) at least one second measured value (p2, T2), for example a second pressure (p2) that is specific to the filling device (250), - Determine (140), by a control unit (HSCU) of the hydrogen tank system (100), a sensor drift (delta_p) of at least one first sensor (10) as a function of the first measured value (p1, T1) and the second measured value (p2, T2). [2] Method according to claim 1, characterized by, that the connection (110) comprises establishing (111) an external data connection (Dat_ext) between the control unit (HSCU) of the hydrogen tank system (100) and an interface (230) of the filling station (200), wherein preferably the filling station (200) transmits via the external data connection (Dat_ext) the at least one second measured value (p2, T2), for example a second pressure (p2), and / or a second calculated value (D2, L2), in particular a diameter (D2) and a length (L2) of the filling device (250), which is specific to the filling device (250), to the control unit (HSCU). [3] Method according to any one of the preceding claims, characterized by, that the measurement (120) of at least one first measured value (p1, T1), for example a first pressure (p1), is carried out by the at least one first sensor (10) in the hydrogen tank system (100), which is set up for this purpose, wherein the measurement (120) includes a transmission (121) of the at least one first measured value (p1, T1), in particular via an internal data connection (Dat_int), to the control unit (HSCU) of the hydrogen tank system (100). [4] Method according to any one of the preceding claims, characterized by , that the measurement (130) of at least one second measured value (p2, T2), for example a second pressure (p2) which is specific for the filling device (250), is carried out by a second sensor (210) of the filling station (200), in particular of the filling device (250), which is designed to measure (130) the at least one second measured value (p2, T2), in particular to measure (130) a second pressure (p2). [5] Method according to any one of the preceding claims, characterized by , that the determination (140) includes a calculation (141) of a modeled pressure loss (delta_p_mod) depending on the at least one second measured value (p2, T2), and in particular depending on the second calculated variable (D2, L2), wherein the pressure loss (delta_p_mod) is specific for the filling station (200), in particular the filling device (250), and the hydrogen tank system (100). [6] Method according to any one of the preceding claims, characterized by, that the determination (140) includes a calculation (142) of at least one modeled pressure (p_mod) which is specific for an expected first measured value (p1, T1), in particular for a first pressure (p1) of the at least one first sensor (10), wherein the calculation (142) of the modeled pressure (p_mod) is carried out as a function of the at least second measured value (p2, T2), for example a second pressure (p2), and in particular a modeled pressure loss (delta_p_mod). [7] Method according to any one of the preceding claims, characterized by , that determining (140) a sensor drift (delta_p) of at least one first sensor (10) as a function of the first measured value (p1, T1) and the second measured value (p2, T2) includes a determination (143) of a sensor drift (delta_p) as a function of a threshold value (p_threshold), in particular comprising: - positive detection (144) of a sensor drift (delta_p) if a difference, in particular the magnitude of the difference, between the at least one first measured value (p1, T1), in particular a first pressure (p1), and the modeled pressure (p_mod) is greater than the threshold (p_threshold), - negative detection (145) of a sensor drift (delta_p) if a difference, in particular the magnitude of the difference, between the at least one first measured value (p1, T1), in particular a first pressure (p1), and the modeled pressure (p_mod) is less than the threshold (p_threshold). [8] Method according to any one of the preceding claims, characterized by, that the determination (140) includes a calculation (146) of an adaptation value (delta_p_off) which is set up to provide a corrected first measurement value (p1_korr) depending on the at least one first measurement value (p1, T1), in particular the at least one first pressure (p1), and the sensor drift (delta_p), wherein in particular the adaptation value (delta_p_off) is calculated by subtracting (147) the at least one first measurement value (p1, T1), in particular the at least one first pressure (p1), from the modeled pressure (p_mod). [9] Method according to any one of the preceding claims, characterized by , that the determination (140) includes a calculation (148) of a corrected first measurement value (p_corr), wherein in particular the calculation (148) is performed depending on the at least one first measurement value (p1, T1), in particular a first pressure (p1), and an adaptation value (delta_p_off), in particular by subtraction. [10] Hydrogen tank system (100) for detecting at least one sensor drift (delta_p) of a first sensor (10) in the hydrogen tank system (100), comprising the hydrogen tank system (100): - at least one first sensor (10) for measuring (120) at least one first measured value (p1, T1), for example a first pressure (p1) that is specific to the hydrogen tank system (100), - a filling nozzle (50) for filling the hydrogen tank system (100) with hydrogen, wherein the filling nozzle (50) can be connected to a filling device (250) of a filling station (200) for filling, wherein the hydrogen tank system (100) is configured to implement the method according to one of the preceding claims. [11] Computer program product comprising instructions which, when the computer program product is executed by a computer, cause it to implement the method according to any one of the preceding claims 1 to 9. [12] Computer-readable data carrier in which instructions are stored which, when executed by a computer, cause it to carry out the method according to any one of the preceding claims 1 to 9. [13] Control unit (HSCU) comprising a computing unit (CU) and / or a storage unit (MU) in which instructions are stored which, when at least partially executed by the computing unit (CU), perform a method according to any one of the preceding claims 1 to 9. [14] Vehicle (300) comprising a control unit (HSCU) according to the preceding claim and / or a hydrogen tank system (100) according to claim 10.

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