阅读说明：本技术 运行机动车电容式雨量传感器的方法，测量信号去干扰装置及具有该装置的机动车 (The method for running motor vehicle condenser type precipitation rain fall sensor, measuring signal remove countermeasure set and the motor vehicle with the device ) 是由 J·纳切特盖尔 于 2018-01-15 设计创作，主要内容包括：本发明涉及一种用于使机动车(30)的电容式、具有导电结构(21)的雨量传感器(10)运行的方法,雨量传感器构造成,产生与下雨强度(11)对应的模拟的测量信号(15)并且作为输出信号(16)输出,其中,所述方法包括：获取(13)至少一个干扰信号(12),干扰信号引起模拟的测量信号(15)的干扰并且导致有干扰的使测量信号(15)；在至少一个信号处理步骤(14)中根据所获取的干扰信号(12)至少部分地为包含干扰的测量信号(15)去干扰；以及输出至少部分地去干扰的输出信号(16)。本发明也涉及一种用于进行所述方法的装置(20)以及一种具有该装置(20)的机动车(30)。(The present invention relates to a kind of methods that condenser type for being used to make motor vehicle (30), the precipitation rain fall sensor (10) with conductive structure (21) are run, precipitation rain fall sensor is configured to, it generates the measuring signal (15) of simulation corresponding with rainy intensity (11) and is exported as output signal (16), wherein, the described method includes: obtaining (13) at least one interference signal (12), interference signal causes the interference of the measuring signal (15) of simulation and causes noisy to make measuring signal (15)；Measuring signal (15) at least one signal processing step (14) according to acquired interference signal (12) at least partly comprising interference goes to interfere；And the output signal (16) of interference is at least partly gone in output.The device (20) and a kind of motor vehicle (30) with the device (20) that the present invention also relates to a kind of for carrying out the method.)

1. one kind is for running the condenser type of motor vehicle (30), the method for the precipitation rain fall sensor (10) with conductive structure (21), The precipitation rain fall sensor is configured to, and the measuring signal of simulation corresponding with rainy intensity (11) is generated in measurement at least once (15) and as output signal related to this (16) it exports, wherein the described method comprises the following steps:

A) (13) at least one interference signal (12) is obtained, the interference signal causes the interference to the measuring signal (15) of simulation And lead to the measuring signal (15) comprising interference；

It b) at least partly include dry according to acquired interference signal (12) at least one signal processing step (14) The measuring signal (15) disturbed goes interference (14)；And

C) output signal (16) of interference is at least partly gone in output.

2. the method according to claim 1, wherein at least one described interference signal (12) in step a) It is the radio signal of electromagnetism, especially transmission signal (35) and/or reception signal (36)；

In the signal processing step in step b), at least one interference is subtracted from the measuring signal (15) comprising interference Signal (12)；

And as the difference signal at least partly going output signal (16) output of interference to generate in step c).

3. the method according to claim 1, wherein the method includes the steps below before the method It is rapid:

I) at least one is obtained with reference to hands movement by means of at least one video camera (31), and obtain in identical rainy intensity (11) capacitance variations corresponding with the reference hands movement, capacitive rain quantity sensor (21) under；

Ii modification rule (25)) are formulated for reference to hands movement, it is corresponding that the modification rule compensates corresponding hands movement (38) Capacitance variations；Wherein

The interference of the measuring signal of simulation is generated by hands movement (38), the hands movement (38) is by means of at least one video camera (31) it is obtained in step a)；

By acquired hands movement (38) and hand is referred to by means of similarity standard (26), especially hand position and/or hand size Motion association, and by means of for the amendment formulated with reference to hands movement in the signal processing step (14) in step b) Regular (25) amendment measuring signal (15) comprising interference；

As the modified measuring signal (15) of output signal (16) output at least partly going interference in step c).

4. method according to any one of the preceding claims, which is characterized in that by means of capacitive rain quantity sensor (10) conductive structure (21),

On the one hand it measures and rains intensity (11), and

On the other hand the radio signal of electromagnetism is sent and/or receives, the radio signal is interfered as interference signal (12) Measurement.

5. method according to any one of the preceding claims, which is characterized in that in addition to by capacitive rain quantity sensor (10) except the first antenna that conductive structure (21) is constituted, at least through the second antenna (33) and/or another antenna (33) or Person sends and/or receives at least one described interference signal (12) only by second antenna and/or another antenna (33) And/or another interference signal (12).

6. method according to any one of the preceding claims, which is characterized in that by being sensed by the condenser type rainfall The second antenna and/or another antenna (33) of first antenna and/or motor vehicle (30) that the conductive structure (21) of device (10) is constituted Send and received by central acceptance device (39) output signal (16) at least partly going interference, the central acceptance device (39) as the current rainy strength information output output signal (16) at least partly going interference.

7. a kind of measuring signal is gone countermeasure set (20), it includes capacitive rain quantity sensor that the measuring signal, which removes countermeasure set, (10) at least one conductive structure (21), at least one electrical input (22) and at least one electricity output end (23), the rain Quantity sensor is configured to, and the measuring signal (15) of simulation corresponding with rainy intensity (11) is generated in measurement at least once, It is characterized in that, the measuring signal goes the signal processing apparatus (14) of countermeasure set (20) to be configured to, and transports according at least one The interference signal provided by electrical input by the antenna assembly and/or video camera that can be connected on the input terminal in row mode (12), the measuring signal (15) of at least partly described simulation goes to interfere, to can provide at least on electricity output end (23) Partly go the output signal (16) of interference.

8. a kind of motor vehicle (30), which is characterized in that there is the motor vehicle measuring signal according to claim 7 to go to do Disturb device (20), wherein at least one antenna (33) and/or video camera (31) of the motor vehicle are connected to measuring signal and go to do It disturbs on the electrical input (22) of device (20).

Technical field

The present invention relates to a kind of for running the quantity sensor of the capacitive rain in motor vehicle/rain sensor method, rain Quantity sensor is configured to, generated in measurement at least once the measuring signal of corresponding with rainy intensity simulation and as with this Relevant output signal output.The present invention also includes that there is the measuring signal of corresponding capacitive rain quantity sensor interference to be gone to fill It sets, and removes the motor vehicle of countermeasure set with corresponding measuring signal.

Background technique

Capacitive rain quantity sensor be it is known, by suitable structural scheme, capacitive rain quantity sensor can be used simultaneously In measurement rainfall and as the antenna for radio signal.It is also known that being installed to the antenna on transparent laminated material.This Shi Wenti is, at least the result of radio signal damage rainfall measurement.

In 2 256 856 A1 of patent document EP, disclose a kind of transparent, face shape for receiving and/or sending The device at least another function of electromagnetic radiation.The additional function is, measures physical property, such as capacitance.It is attached The function of adding is the function of the sensor element in heating field and/or humidity sensitive, especially precipitation rain fall sensor.In order to separate two Kind function, by frequency filter by electric signal caused by the function as precipitation rain fall sensor and by receiving and/or sending component The getable Signal separator of function.

It is traditional thread binding that a kind of day for the wireless telecommunications with motor vehicle is disclosed in 297 08 536 U1 of patent document DE It sets.The antenna is made up of the conductive conductor circuit of printed circuit board.Preferably, printed circuit is included in by plastic material structure At independent covering part in, plastic material has the closed profile of glass surface and can be by suitably bonding of being accurately passed through Agent is fixed on glass surface.It can not achieve other functions by the antenna assembly.

The compound glass with antenna structure and integrated switching surface is disclosed in patent document WO 2013/091961A1 Glass.For this purpose, provide two conductive structures, one of them be antenna conductor and another be switching surface.This is especially that nothing connects The switching surface of touching.Undisclosed other functions other than switching surface.By precipitation rain fall sensor and for the transmission of electromagnetic radiation With integrating for reception device, or antenna assembly of the presence other than precipitation rain fall sensor, pass through the quilt of transmission and receiving device The measurement result of electromagnetic interference precipitation rain fall sensor send or received.

Summary of the invention

The object of the present invention is to provide a kind of methods, even if the method achieve due to interference signal interference when also with height The measurement result of precision runs capacitive rain quantity sensor, also provides a kind of measuring signal and removes countermeasure set and have this type The measuring signal of type removes the motor vehicle of countermeasure set.Rainy intensity can be accurately measured by capacitive rain quantity sensor as a result,.

Purpose according to the present invention realization according to independent claims.Pass through the relevant right of present specification It is required that, the following description and drawings description be advantageously improved scheme.

The present invention describes a kind of method for running capacitive rain quantity sensor.Precipitation rain fall sensor is led at least one Electric structure.Especially, precipitation rain fall sensor uses in a motor vehicle, or in train.In measurement at least once, rainfall sensing Device exports the measuring signal of simulation respectively, and the measuring signal of simulation is corresponding with rainy intensity.It means that according to the intensity of rainfall The value of output signal, that is, the measuring signal of the simulation exported is different, such as when rain is big with high value, in rain hour It is zero with low value, and in rain stopping time value.

In order to make output measuring signal, that is, output signal relative to interference signal influence stablize, the present invention provide with Lower method.In first step a), at least one interference signal is obtained at this time, and interference signal causes the dry of the measuring signal of simulation It disturbs.By interference signal, so that measuring signal is had interference, which means that the value of measuring signal is the value of distortion, that is, with do not depositing The value that precipitation rain fall sensor exports in interference signal is unequal.By the device suitable for this, such as by means of antenna in radio Interference signal is obtained in signal.The advantages of this method step is, thus accurately known interfering signal.It is also accurately known as a result, The measuring signal of interference simulation in which way.In this way, interference signal can also have transports with capacitive rain quantity sensor The identical frequency of capable power or closely similar, especially frequency of the difference less than 10%.

In steps of a method in accordance with the invention b), the measuring signal at least partly comprising interference goes to interfere.Believing In number processing step, interfere based on the interference signal obtained before.That is, the signal processing step is configured to, at least portion Divide the interference of ground compensation measuring signal due to caused by interference signal.It means that can by known acquired interference signal It releases, makes the value distortion of the measuring signal of simulation with degree in which way.Therefore, acquired in signal processing step Interference signal is used for, and compensates effect of the interference signal to the measuring signal of simulation.Here, at least with such mass compensation or removing It goes to interfere, that is, it includes the strength information that correctly rains that the measuring signal of interference is gone in the quality assurance.I.e., it is preferable that be fully compensated Interference signal is, which means that be preferably entirely that the measuring signal simulated goes to interfere, that is, the measuring signal of simulation is equivalent to not The measuring signal of the simulation measured when having interference signal.But due to for example dry in measurement or acquisition signal in known manner It always will appear measurement inexactness when disturbing signal, as starting point, that is, normally partially go to do for the measuring signal of simulation It disturbs.Herein, it is preferable that compensate the part as big as possible of interference signal, especially compensate at least the 80% of interference signal.

In step c) according to the method for the present invention, the output signal of interference is at least partly gone in output.It means that In The measuring signal at least partly simulated in signal processing step is gone after interference, and the survey of the simulation is exported as output signal Measure signal.Therefore, output signal is at least partly to be gone the measuring signal of interference.The advantages of this method step is, thus Know the measuring signal of the simulation of precipitation rain fall sensor, and the measuring signal of the simulation is undistorted, that is, do not interfere with the influence of signal. It thereby guarantees that, actual rainy intensity can be extremely accurate released from output signal.Learn actual, absolute rainy intensity Some applications are important, such as window wiper equipment for controlling motor vehicle or as Meteorological Services quotient's Information.

In the improvement project of method, the interference signal measured is the radio signal of electromagnetism, especially sends and/or connects The collection of letters number.For example, issuing the radio signal of the electromagnetism by mobile phone.The radio signal of the electromagnetism can be by means of corresponding Antenna obtains.For example, this antenna be in the car and/or on mobile wireless antenna and/or interior antenna and/or for plus The repeater of strong radio signal.Acquired signal uses for other method and steps.In this case, pass through subtracter Carry out signal processing step.At least one interference signal that subtracter obtains before subtracting from the measuring signal comprising interference. Signal processing step the result is that difference signal.The difference signal as at least partly go interference output signal exported.Change sentence It talks about, which describes how to subtract work from the measuring signal of noisy simulation again in signal processing step To interfere the interference signal being attached in the measuring signal of simulation.Therefore, difference signal is the measurement letter with the simulation being worth as follows Number, that is, the value is at least approximately equivalent to the value exported in the case where interference signal is not present.Preferably, the value of difference signal is quasi- Really it is equivalent to the value of the measuring signal of the simulation exported in the case where not depositing interference signal.The advantages of improvement project is, By obtaining known interfering signal of going forward side by side, interference signal can also be very well compensated again.Therefore, it at least partly goes to interfere The value of output signal be extremely accurate equivalent to that there is no the values of the measuring signal of the simulation in the case where interference signal.It subtracts The very big advantage of interference signal is that interference signal can be in the frequency range of the running frequency of capacitive rain quantity sensor, and And it however can compensate for the interference.

A kind of improvement project of this method considers, can also interfere rainfall by the influence different from the radio signal of electromagnetism The measuring signal of the simulation of sensor.For example, this influence is hands movement, hands movement changes its electricity near precipitation rain fall sensor Hold, and also changes the value of measuring signal in the measurements in turn.Therefore, in a kind of improvement project of method, two In the step of before this method, is obtained by means of video camera with reference to hands movement first in step i) and its measurement of simulation is believed Number effect, and formulate modification rule in the step ii), compensate this dry of corresponding hands movement by means of the modification rule It disturbs.Therefore, in step i), at least one hands movement is obtained, which causes the condenser type when rainy intensity remains unchanged The capacitor of precipitation rain fall sensor.It means that causing capacitance variations only by hands movement, and thus hands movement indicates interference letter Number.Preferably, in multiple reference hands movements, repeatedly corresponding capacitance variations are obtained.At this point, important parameter can are as follows: hand The posture and/or hand of the position and/or hand of size and/or hand are at a distance from precipitation rain fall sensor.By means of referring to hand accordingly The capacitance variations of the precipitation rain fall sensor obtained when movement formulate the modification rule for compensating corresponding capacitance variations in step ii), So as to export the measuring signal with the simulation of output identical there is no the hands movement of interference again.For example, Modification rule can be simple table, which provides the value to subtract from the measuring signal comprising interference and/or will include The determining coefficient of the value scaling of the measuring signal of interference.Modification rule can also be the calculation criterion of formula, refer to hand according to multiple It moves the influence to corresponding capacitance variations and formulates the calculation criterion.The advantages of this improvement project of method is, thus not only The interference signal of energy compensation electromagnetic, and the measuring signal for the precipitation rain fall sensor that can be at least partly interfered by hands movement is gone Interference.For this purpose, the hands movement of the measurement of at least one interference precipitation rain fall sensor is obtained by means of video camera in step a).In This, Camera Design is at the optics of video camera obtains the region that range obtains at least capacitive rain quantity sensor positioning.In step B) in, according to above-described parameter by least one acquired in hands movement with reference to compared with hands movement, and by means of phase Hands movement is referred to like the selection of property standard.Similarity standard includes at least one of above-described parameter again, that is, for example, institute The size of the hand of the hands movement of acquisition differs less than 20% or acquired with the size of the acquired hand with reference to hands movement The position of the hand of hands movement is differed with the position of the acquired hand with reference to hands movement is less than 2cm.By means of with reference hands movement Corresponding modification rule, the measuring signal of at least partly simulation of capacitive rain quantity sensor go to interfere, and in step C) as the output signal output at least partly going interference in.

A kind of improvement project of this method provides that the conductive structure of capacitive rain quantity sensor is at least two different function Energy.On the one hand, intensity of raining is measured by means of the conductive structure, this corresponds to the function of precipitation rain fall sensor.On the other hand, conductive Structure is also used for, and sends and/or receive the radio signal of electromagnetism.Therefore, conductive structure also serves as antenna.This especially by Following manner realize, that is, with suitable geometry design conductive structure, the shape and should be sent and/or it is received wirelessly The frequency dependence of electric signal.For example, can be used for sending and/or receiving mobile radiotelephone signal by the antenna that conductive structure is constituted, Such as GSM- or LTE- signal.The advantage is that in this case, forming the mobile wireless letter of the interference signal of precipitation rain fall sensor Number directly known to precipitation rain fall sensor.It means that the interference signal in step a) can be carried out directly within precipitation rain fall sensor Acquisition.In this case, in an advantageous manner, signal processing apparatus, signal processing are also provided within precipitation rain fall sensor Device can carry out method and step b), so that capacitive rain quantity sensor can export on the output at least partly removes the defeated of interference Signal out.The advantage is that integrated solution is provided, in no other components, for example for obtaining the outside of interference signal The program is realized in the case where antenna.

A kind of improvement project of method provides that at least one interference signal and/or another interference signal not only pass through conduct The conductive structure of the capacitive rain quantity sensor of first antenna sends and/or receives, and additionally at least through or only one A second and/or other antennas send and/or receive.It means that identical interference signal not only pass through rainfall sense The conductive structure of device and by additional antenna send and/or receive or two or more disturbance signals in extremely Few one conductive structure by capacitive rain quantity sensor sends and/or receives, and in interference signal another by with The different antenna of capacitive rain quantity sensor sends and/or receives.For example, the conductive structure of precipitation rain fall sensor is configured to for connecing Receive wireless signal, and external antenna, for example integrated mobile radio antenna in a motor vehicle are configured to for sending and/or Receive mobile radio signal.The advantages of improvement project is to obtain different electromagnetic signals, that is to say, that in different frequencies Wireless signal under rate, and the measuring signal that thus can be used for at least partly simulation of precipitation rain fall sensor goes to interfere.

A kind of improvement project of method provides, the output signal of interference is at least partly gone to send by antenna, and by Central acceptance device receives.Output signal is interpreted to currently rainy strength information by central acceptance device, and will currently be rained Strength information is correspondingly used as information to export.For example, central acceptance device can be Meteorological Services quotient.Advantageously, this meteorology Service provider has the rainy strength information on the current location of motor vehicle in real time.Send the antenna for going the output signal of interference It can be the conductive structure of capacitive rain quantity sensor and/or the antenna of another motor vehicle.It is directly passed by rainfall in output signal In the case where the conductive structure of sensor is sent, advantage is can to save another external antenna at this time and couple with the antenna.By This, precipitation rain fall sensor is embodied as the integrated component realized in the case where no external connection completely.When the day of motor vehicle Already existing sending device can be used for giving the advantage that when sending in line.Such as it, which means that can save additional real It applies converter and/or sends signal control part.

As already explained, the present invention also includes that measuring signal removes countermeasure set, which removes countermeasure set With capacitive rain quantity sensor, precipitation rain fall sensor is configured to, and generates the measuring signal of simulation according to intensity of raining in the measurements. Measuring signal goes countermeasure set to have at least one electrical input and at least one electricity output end.Measuring signal removes countermeasure set Signal processing apparatus is configured to, according to acquired interference signal, at least partly simulation of capacitive rain quantity sensor Measuring signal goes to interfere.At this point, acquired measuring signal can be provided by electrical input, or sensed by condenser type rainfall The conductive structure of device itself provides.In this case, electrical input can also be saved.But on electrical input especially Video camera can be coupled, the hands movement that may interfere with of another object for influencing capacitor is supplied to by signal processing device by video camera It sets.Measuring signal goes the output end of countermeasure set to be configured to, and provides the output signal at least partly going interference.Then, such as Output signal can be sent by means of another antenna.Also it realizes and output is directly sent by the conductive structure of capacitive rain quantity sensor Signal can also then save electricity output end.

The present invention also includes a kind of motor vehicle, which removes countermeasure set equipped with measuring signal according to the present invention. It is gone on the electrical input of countermeasure set for example, the antenna and/or video camera of motor vehicle can be connected to measuring signal.The advantage is that The already existing equipment of motor vehicle can be used for obtaining step according to the method for the present invention, and can be by phase by electrical input The interference signal that should be obtained is supplied to the signal processing apparatus that measuring signal removes countermeasure set.

The present invention also includes the improvement that measuring signal according to the present invention removes countermeasure set and motor vehicle according to the present invention Scheme has the feature for for example having been combined the description of improvement project according to the method for the present invention.For this reason, herein not Describe that measuring signal according to the present invention removes countermeasure set and motor vehicle according to the present invention again is correspondingly improved scheme.

Detailed description of the invention

The embodiment of the present invention is described below.Wherein:

Fig. 1 shows the schematic diagram of method with process；

Fig. 2 shows the schematic diagrames that measuring signal removes countermeasure set；And

Fig. 3 shows the schematic diagram that the motor vehicle of countermeasure set is removed with measuring signal.

Specific embodiment

Embodiment explained hereinafter is the preferred embodiments of the present invention.In embodiment, described embodiment Component respectively indicate it is corresponding individually, be considered as feature of the invention independent of each other, these features are also independent of one another respectively Ground improves the present invention, and also individually or with other is differently considered as of the invention with shown combination in turn and forms portion Point.In addition, the other feature in the feature that can also be had been described through the invention supplements described embodiment.

The identical element of function is respectively equipped with identical appended drawing reference in the figure.

Fig. 1 shows in a schematic form this method.Here, capacitive rain quantity sensor 10 measures intensity 11 of raining.Condenser type Precipitation rain fall sensor 10 provides the information about rainy intensity 11 with the measuring signal 15 of simulation.The measuring signal of the simulation is by dry Disturb the interference of signal 12.On the one hand interference signal 12 influences capacitive rain quantity sensor 10, on the other hand pass through acquisition device 13 It obtains.Due to interference signal 12, the measuring signal 15 of noisy simulation and the interference signal 12 obtained by acquisition device 13 are divided It is not transferred to signal processing apparatus 14.Signal processing apparatus 14 utilizes the information of the interference signal 12 obtained, so as to dry to have The measuring signal 15 for the simulation disturbed goes to interfere.As a result, signal processing apparatus 14 provides the output letter at least partly going interference Numbers 16.

Fig. 2 shows the schematic diagrames that measuring signal removes countermeasure set 20.Measuring signal goes countermeasure set 20 as condenser type Precipitation rain fall sensor 10 has conductive structure 21.Conductive structure 21 passes the measuring signal 15 for the simulation that signal 12 interferes of being interfered It is defeated by signal processing apparatus 14.Electricity input terminal 22 on the interference signal 12 being acquired is provided, thus the interference signal for Signal processing apparatus 14 uses.Measuring signal goes countermeasure set 20 to export by the output end 23 of electricity and at least partly goes interference Output signal 16.Signal processing apparatus 14 has subtracter 24, modification rule 25 and similarity standard 26.

Fig. 3 shows in a schematic form motor vehicle 30, and motor vehicle removes countermeasure set 20' equipped with measuring signal.Measuring signal Go countermeasure set suitable for the rainy intensity 11 of measurement.As the device for obtaining interference signal, motor vehicle 30 has camera shooting Machine 31, interior antenna 32 and vehicle-mounted antenna 33.Interference signal is the reception signal 34 of electromagnetism or sends signal 35, by being located at machine The mobile radio signal 36 or hands movement 38 that mobile device 37 in motor-car 30 is sent.In order to carry out signal processing step, Motor vehicle 30 has signal processing apparatus 14.Information, such as output signal 16 can be sent out from motor vehicle 30 by sending signal 35 Give external server unit 39.

In one embodiment, interference signal 12 is the radio signal of electromagnetism.The interference signal passes through acquisition device 13, Such as antenna, go the electrical input of countermeasure set 20 to be transmitted on signal processing apparatus 14 by measuring signal.Condenser type rainfall Sensor output simulation measuring signal 15, the measuring signal of simulation be interfered signal 12 interference.The equally quilt of measuring signal 15 It is transmitted on signal processing apparatus 14.Subtracter 24 subtracts the interference signal of acquisition from the measuring signal 15 of noisy simulation 12.The measuring signal 15 of interference is gone to be exported by the output end 23 of electricity as output signal 16.In the ideal case, the result is that For output signal 16 completely go interference perhaps at least partly go to interfere thus with when there is no interference signal 12 or and this The identical mode of information that the deviation of kind of situation is very small, includes in the output signal 16 when being, for example, less than 10%, output signal 16 include the information of the rainy intensity 11 obtained by precipitation rain fall sensor 21.

In another embodiment, interference signal 12 is provided by hands movement 38.For example, hands movement 38 can be motor vehicle 30 The hands movement of driver.Here, the hands movement 38 ought be carried out at least near the pre-determining that measuring signal removes countermeasure set 20' And when disturbing the measurement of capacitive rain quantity sensor 21, hands movement 38 is obtained at video camera 31.In this case, it does It disturbs signal 12 to be obtained by video camera 31, and is transmitted on signal processing apparatus 14.In signal processing step, by similar Property the hands movement 38 that will acquire of standard 26 selected compared with the hands movements obtained before other, and by means of similarity standard 26 The hands movement obtained before such, that is, the hands movement has been obtained to the interference effect of the measuring signal 15 of simulation, and It has been directed to the modification rule 25 that the hands movement has formulated the interference for the measuring signal 15 that amendment is simulated.Therefore, by video camera 31 The hands movement 38 of acquisition is to the influence quilt processing unit 14 of the measurement of capacitive rain quantity sensor 21 it is known that and can be by repairing Positive rule 25 compensates, so that output signal 16 indicates and capacitive rain quantity sensor when there is no the case where hands movement 38 again The measuring signal 15 of the identical simulation of 21 outputs.

In another embodiment, interference signal 12 is provided by the mobile radio signal 36 of mobile wireless device 37.It should Interference signal is obtained by interior antenna 32 and is supplied to signal processing apparatus 14.In another embodiment, pass through motor vehicle day Line 33 issues the mobile radio signal of automobile telephone as signal 35 is sent, wherein sending signal 35 indicates interference signal 12. It is sent by the signal by vehicle-mounted antenna 33 and for this method step it has been shown that therefore need not accurately acquire again The signal, but signal processing apparatus 14 can also be equally provided to.In another embodiment, interference signal 12 is the reception of electromagnetism Signal 34, such as mobile radio signal or wireless signal.It receives signal 34 or is passed by conductive structure 21, i.e. condenser type rainfall Sensor itself obtains, and is supplied to signal processing apparatus 14 as interference signal 12, or obtained by vehicle-mounted antenna 33.In In such case, vehicle-mounted antenna 33 goes countermeasure set 20' to be connected with the measuring signal of motor vehicle 30.

In one embodiment, the measuring signal of motor vehicle 30 goes countermeasure set 20' to go corresponding to the measuring signal in Fig. 2 Countermeasure set 20, that is to say, that can also go to provide signal processing apparatus 14 and capacitive rain in countermeasure set 20' in measuring signal Quantity sensor 21.In another embodiment, measuring signal goes countermeasure set 20' to have 22 He of conductive structure 21 and electrical input Electricity output end 23.However, the measuring signal in motor vehicle 30 goes to provide signal processing apparatus 14 except countermeasure set 20'.At this point, Signal processing apparatus 14 is for example realized by the car-mounted computer of motor vehicle 30.

Present invention discloses how by making capacitive rain quantity sensor, specifically its survey according to the method for the present invention Signal value is measured to stablize relative to interference signal.The advantages of stable relative to interference signal capacitive rain quantity sensor is mainly, Compared with for example optical precipitation rain fall sensor, capacitive rain quantity sensor provides the more accurate letter about current intensity of raining Breath.In order to which the rainy strength information of capacitive rain quantity sensor is for example used for Meteorological Services quotient, this is necessary.Therefore, have With good grounds capacitive rain quantity sensor of the invention, can be in real time by very accurately rainy strength information is sent to external service Quotient, such as Meteorological Services quotient.There is damage to the measurement result of capacitive rain quantity sensor by compensating according to the method for the present invention And the interference signal for being distorted it, i.e. the radio signal of such as electromagnetism, such as UMTS-, GSM- or LTE signal.It mentions as a result, For whole potential of condenser type precipitation rain fall sensor, this realizes the ionization meter that accurately rains very much.Here, condenser type rainfall passes Sensor itself is embodied as antenna, which sends or receives interference signal, so that the interference signal is directly sensed by rainfall Device obtains and known and thus can be filtered out from measurement, otherwise, enter as undefined noise or interference In rainfall measurement.It is to reduce component cost by reducing complexity and a variety of variant schemes in this advantage.Thus the capacitor run Formula precipitation rain fall sensor is realized necessary for determining applicable cases (such as the group for weather data to be sent to backstage services) Rainfall measurement.The advantages of capacitive rain quantity sensor is the residual salts amount in water that thus can also release, such as in winter, Whether the residual salts amount indicates there are how much salt on road, to learn, need on road salting to guarantee when freezing Traffic safety.

Generally speaking, example shows that capacitive rain quantity sensor can so be made to run through the invention, so that dry existing When disturbing signal, which also exports the so accurate and strength information that accurately rains, so that the information can be Service provider, such as used in Meteorological Services quotient.For this purpose, according to the measurement of acquired interference signal processing capacitive rain quantity sensor Signal, to compensate the effect of interference signal.