WO2022179824A1 - Verfahren zum betrieb einer waage mit ionisator - Google Patents
Verfahren zum betrieb einer waage mit ionisator Download PDFInfo
- Publication number
- WO2022179824A1 WO2022179824A1 PCT/EP2022/052666 EP2022052666W WO2022179824A1 WO 2022179824 A1 WO2022179824 A1 WO 2022179824A1 EP 2022052666 W EP2022052666 W EP 2022052666W WO 2022179824 A1 WO2022179824 A1 WO 2022179824A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weighing
- ionizer
- values
- weighed
- calculated
- Prior art date
Links
- 238000005303 weighing Methods 0.000 title claims abstract description 195
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000007935 neutral effect Effects 0.000 claims abstract description 22
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 12
- 238000012937 correction Methods 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 description 49
- 230000008569 process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 238000007786 electrostatic charging Methods 0.000 description 8
- 230000004913 activation Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 4
- 238000007600 charging Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000408529 Libra Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G7/00—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups
- G01G7/06—Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in the preceding groups by electrostatic action
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
- G01G3/1414—Arrangements for correcting or for compensating for unwanted effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/28—Frames, Housings
- G01G21/286—Frames, Housings with windshields
Definitions
- the invention relates to a method for operating a scale with a weighing item receptacle arranged in a weighing chamber for receiving items to be weighed, a weighing sensor mechanically connected to the weighing item receptacle, an ionizer, by means of which an ion cloud can be introduced into the weighing chamber, and a control system with the weighing sensor and the Ionizer connected weighing electronics, comprising the steps:
- a weighing item receptacle for receiving items to be weighed, which is arranged inside a weighing chamber.
- the weighing space is delimited on all sides by a draft shield, which has at least one wall element that can be opened, in order to enable the item to be weighed to be positioned on the item to be weighed.
- a weighing sensor is mechanically connected to the receptacle for the item to be weighed, by means of which measured values can be recorded, on the basis of which a weighing value is calculated by means of weighing electronics connected to the weighing sensor, which value corresponds to the mass of the item to be weighed.
- the weight value is output, which is usually done by displaying the weight value on a scale display.
- Electrostatic charging of the item to be weighed is particularly problematic if - as is usual - the item to be weighed is weighed in a container made of non-conductive, i.e. electrically insulating material; because in this way the charge of the goods to be weighed cannot flow off.
- the receptacle itself is usually made of metal and therefore does not become electrostatically charged. Instead, charges can usually flow away via a conductive connection with the scale housing.
- ionizers are able to ionize air molecules with the help of high-voltage electrodes.
- the sign of the ions generated at an electrode tip corresponds to the sign of the voltage applied to the respective high-voltage electrode.
- ionizers include at least two high voltage electrodes and are operated to produce both positive and negative ions.
- the generated ions form an ion cloud that spreads out in the weighing chamber. When they meet, the charges of the ion cloud can interact with the charges of an electrostatically charged item to be weighed and neutralize them.
- Such a scale with an ionizer is known from EP 1 813920 B1.
- the ionizer is activated using data from an electrostatic sensor, which is based on the principle of detecting induction charges or the principle of the field mill and which can detect the magnitude and/or sign of electrostatic charges on the goods to be weighed.
- the item to be weighed is placed on the weighing item holder of the scale.
- the electrostatic charge condition of the goods to be weighed is then determined by means of the electrostatic sensor. If the goods to be weighed are electrostatically charged, the data from the electrostatic sensor is forwarded to a measuring unit in the electronic weighing system. This compares the transmitted data from the electrostatic sensor with a specified threshold value.
- an action is triggered by the electronic weighing system.
- This action can be, for example, blocking the further weighing process and/or activating the ionizer.
- Activating the ionizer causes an ion cloud to be generated and introduced into the weighing chamber.
- the electrostatic charge state of the item to be weighed approaches its electrostatic neutral state due to a recombination of the charges of the ion cloud with the charges of the item to be weighed.
- the duration and intensity of the ionizer operation are determined according to the level of electrostatic charging of the goods to be weighed.
- the electrostatic charge of the goods to be weighed is then determined again using the electrostatic sensor.
- the ionizer will then restart if necessary activated.
- the disadvantage of this known device is that the control of the ionizer has to be based on the data of an electrostatic sensor that is to be provided separately. This makes the control of the ionizer and thus the weighing process as a whole (time-consuming) consuming and expensive.
- a scale with an ionizer is known from the generic document mentioned at the outset, which uses the development of the weight values even during the activity of the ionizer in order to draw conclusions about the achievement of the electrostatic neutral state. Specifically, while the ionizer is active, measured values from the weighing sensor are constantly recorded and converted into weight values in a device-specific manner. These weight values are treated as provisional weight values and their development over time is observed in particular. In the case of heavily electrostatically charged items to be weighed, the effect of the ionizer activity is strong and the preliminary weighing values change quickly. As the charge on the goods to be weighed decreases as a result of the ionizer activity, the provisional weighing values gradually stabilize.
- a scale with an ionizer is also known from DE 202008017708 U1, this comprising four partial ionizers.
- the four partial ionizers are activated and deactivated in pairs, which is controlled by a program in the electronic weighing system.
- the activation of the partial ionizers and their duty cycle is controlled as a function of the measured humidity, the open state of the draft shield and/or the signal from other sensors. No statement is made about the exact time at which all partial ionizers are deactivated, only that this takes place depending on the measured humidity, the open state of the draft shield and/or the signal from other sensors.
- Another disadvantage of this known device is the need for a separate sensor for controlling the ionizer.
- the control of the ionizer and thus the weighing process as a whole becomes unnecessarily (time-)consuming and cost-intensive.
- measured values of the weighing sensor are recorded when the ionizer is activated and weighing values are calculated from these.
- the ionizer when the ionizer is activated, only provisional weighing values are initially calculated.
- the final weight value is only calculated when a predetermined number of provisional weight values, which were calculated in succession, have been recognized as being stable within predetermined limits. It is the final weighing value that is finally output.
- the invention makes use of the knowledge that the continuously calculated weight value of an electrostatically charged item to be weighed is unstable when it interacts with the charges of an ion cloud. Because as soon as the charges of the ion cloud meet those of the item to be weighed, they recombine, which changes the prevailing Coulomb forces and thus the vertical force component, which is added to the weight force acting on the item to be weighed. The successively calculated weighing values of an electrostatically charged item to be weighed change accordingly when the ionizer is activated. These changes in the weight value are used to determine the electrostatic charging status of the goods to be weighed. The final weight value should only be calculated and output when successively calculated preliminary weight values have approached a stable value approximately asymptotically.
- the weighing process is compared to others known from the prior art Method shortened, namely in that the steps of data acquisition by a sensor and the evaluation and reaction to the sensor data are omitted.
- positive and negative ion clouds are generated alternately during a detection phase by means of the ionizer, and during a neutralization phase that follows the detection phase, only an ion cloud of the sign that led to larger changes in the successively calculated, preliminary weight values in the detection phase.
- the ionizer is therefore operated in a detection phase in such a way that only positive and only negative ion clouds are alternately generated by means of the ionizer.
- the electrostatic charge status of the goods to be weighed more precisely the sign of the electrostatic charge, can be determined. If the goods to be weighed are (predominantly) positively charged, the interaction with a negatively charged ion cloud causes larger changes in the weight value than with a positively charged ion cloud.
- a neutralization phase that follows the recognition phase, the ionizer is then operated in such a way that only an ion cloud of that sign is generated that led to larger changes in the provisional weighing values in the recognition phase.
- the necessary operating time of the ionizer to neutralize the electrostatic charging state of the item to be weighed and, as a result, the duration of the weighing process as a whole is shortened.
- the ionizer is preferably deactivated and further measured values of the weighing sensor are then recorded, from which further preliminary weighing values are continuously calculated, until a predetermined number of these successively calculated, further preliminary weighing values as were reliably detected within specified tolerances.
- the ionizer is therefore deactivated as soon as successively calculated preliminary weight values no longer vary. Further provisional weight values are then continuously calculated until these also remain stable. Only when this is the case is the final weighing value calculated and output.
- Deactivating the ionizer before calculating the final weighing value has the advantage that the final weighing value is determined undisturbed by the so-called ion wind, which results from the movement of the ion cloud generated by an activated ionizer. Because even if the goods to be weighed have already approached their electrostatic neutral state, the ion wind influences the weight value - even if only in the pg range. Accordingly, when operating high-resolution scales and continuing to calculate further provisional weight values after the ionizer has been deactivated, a sudden change in load can be seen. Because the final weight value is only calculated after the ionizer has been deactivated and after the subsequent load step, the final weight value that is output is even more precise and less influenced by interference factors that impair the accuracy of the weight value.
- the final weighing value is particularly preferably calculated exclusively from the other provisional weighing values.
- the final weighing value should not be calculated from preliminary weighing values or from a combination of preliminary and further preliminary weighing values. Instead, the final weight value should be calculated solely from other provisional weight values, i.e. those weight values that are based on the measured values of the weighing sensor with the ionizer deactivated. This ensures that only after deactivating the ionizer conditional load step calculated weight values as a basis for calculating the final weight value, which further increases the precision of the final weight value.
- the weighing area is delimited on all sides by an openable draft shield.
- the draft shield enables the weighing value to be determined more precisely, unaffected by environmental influences such as drafts.
- the ionizer is preferably activated by opening the draft shield when the item to be weighed is not loaded. This means that the ionizer is put into operation when the draft shield is opened and at the same time no load is registered on the load holder. If the ionizer is activated when the draft shield is opened while there are no items in the weighing pan, electrostatically charged items can be discharged by the ion cloud generated by the ionizer when they are brought into the weighing chamber, i.e. before they are placed on the weighing pan. In this way, the total time required for the weighing process can be further reduced.
- the ionizer can be activated by loading the weighing goods holder.
- the ionizer is activated by registering a weight or load on the weighing object holder.
- the advantage of this is that the ionizer is only put into operation when it is actually needed - namely when an item to be weighed is actually being weighed. In this way, the operating time of the ionizer is shortened and, as a result, the waste heat generated by the power dissipation of the ionizer in its activated state is reduced.
- the latter is beneficial in terms of weighing technology in that the waste heat from the ionizer can cause unwanted convection currents in the weighing chamber that falsify the weighing value.
- the ionizer can be activated by the signal from a proximity sensor crossing a loading path.
- the loading path is to be understood here as the path that the item to be weighed has to take when the scales are operated as intended in order to be brought into a weighing space that may be separated from the environment by an openable draft shield and placed on the weighing item receptacle.
- the activation of the ionizer by the signal from such a proximity sensor is a variant that is easy to implement. So can the sensor for example, be designed as an inductive or as an optical proximity sensor (z. B. in the form of a light barrier).
- the ionizer can be activated earlier, for example when the goods to be weighed are introduced into the weighing chamber, or only later, for example when the goods to be weighed are placed on the weighing goods holder.
- the ionizer can be activated by an operable switch.
- the switch is preferably located outside the weighing room.
- the switch can be arranged in an operating unit for the manual or other specific input (for example with the foot) of control commands for the operation of the scales. This allows a user of the method according to the invention to activate the ionizer himself—if desired.
- the ionizer is switched on and off in a pulsed manner in its activated state, and correction terms for the mathematical correction of the final weight value are determined from changes occurring in successively calculated, provisional weight values when the ionizer is switched off.
- the activated ionizer is therefore switched on and off alternately. If changes occur in successive, provisional weighing values even when the ionizer is switched off, it can be concluded that, in addition to the electrostatic charging of the goods to be weighed, other disruptive factors influence the accuracy of the weighing value. Because when the ionizer is switched off, no ion cloud is generated.
- FIG. 1 a schematic representation of a scale for carrying out the method according to the invention
- FIG. 2 a first exemplary course of weight values during operation according to the invention of a scale with an ionizer according to FIG. 1,
- FIG. 3a a second exemplary course of weight values when operating a scale according to the invention with the ionizer switched on and off in a pulsed manner
- FIG. 3b a third exemplary course of weight values when operating a scale according to the invention with the ionizer switched on and off in a pulsed manner and
- FIG. 4 shows a fourth exemplary course of weight values when operating a scale according to the invention, comprising a recognition phase and a neutralization phase.
- FIG. 1 An example of such a scale that is suitable for carrying out the method according to the invention is shown in FIG.
- the balance 10 from FIG. 1 comprises a weighing chamber 12 which—which is not absolutely necessary for the invention but is advantageous—is bounded on all sides by a draft shield 24 .
- a Weighing item receptacle 14 In the weighing room 12 is a Weighing item receptacle 14 on which an item to be weighed can be positioned.
- the draft shield 24 has at least one element that can be opened, for example an openable side wall, so that the goods to be weighed can be introduced into the weighing space 12 delimited by the draft shield 24 and placed on the receptacle 14 for the goods to be weighed.
- the weighing object receptacle 14 arranged in the weighing chamber 12 is mechanically connected to a weighing sensor 16 which in turn is connected to weighing electronics 20 . Measured values are recorded by means of the weighing sensor 16, from which weighing values are calculated by means of the electronic weighing system 20, which correspond to the mass of the goods to be weighed.
- the scale 10 also includes a display 22, by means of which weighing values can be output and displayed.
- the balance 10 includes an ionizer 18, by means of which an ion cloud can be introduced into the weighing chamber 12.
- FIG. 2 shows a first exemplary course of weight values 28 when operating a scale 10 with an ionizer 18, as shown in FIG.
- a stable zero value can initially be seen when the item to be weighed is unloaded.
- the weighing sensor 16 begins to produce measured values from which provisional weighing values are continuously calculated by means of the electronic weighing system 20 .
- the measured values of the weighing sensor 16 are preferably recorded when it is registered that the receptacle 14 to be weighed is loaded and the draft shield 24 is closed. However, the recording of the measured values can also be started simply by loading the receptacle 14 to be weighed or by closing the draft shield 24 .
- the ionizer 18 is activated.
- the ionizer 18 is switched on permanently in its activated state (period Ti), both positive and negative ions being generated at the same time.
- the activation of the ionizer 18 is noticeable in the case of the electrostatically charged item to be weighed by a time-dependent change in the weighing values; more precisely, the provisional weighing values decrease over time.
- the reason for this is that an ion cloud is generated by means of the ionizer 18 and is introduced into the weighing chamber 12, where the charges of the ion cloud recombine with those of the goods to be weighed.
- FIG. 2 shows how a possible weighing value curve 28 looks when the loading of the weighing object receptacle 14 (time t2) and the activation of the ionizer 18 (time t 3 ) differ in time, more precisely, if the activation of the ionizer 18 only after the loading of the weighing item 14 takes place.
- This selected example serves only to illustrate the effect of the ionizer activation on the course of the weighing value 28.
- the ionizer 18 is preferably already activated by the opening of the draft shield 24 when the weighing goods receptacle 14 is unloaded or by the signal from a proximity sensor that crosses a loading path. ie before loading the weighing object receptacle 14. Likewise, the activation of the ionizer 18 can take place by loading the weighing object receptacle 14 (ie at the same time as the loading of the weighing object receptacle 14) or by actuating a switch.
- the electrostatic charge state of the electrostatically charged item to be weighed approaches its electrostatic neutral state, which is noticeable through changes in the provisional weighing values. Accordingly, when the item to be weighed has reached its electrostatic neutral state within specified tolerances, this is recognized by the fact that a predetermined number of consecutive, provisional weighing values remains stable, as is the case at time U in FIG.
- FIG. 2 also shows a smaller jump in load at time t 5 after the provisional weighing values have become stable. This results from the deactivation of the ionizer 18. Because even if the electrostatic charge state of the item to be weighed is already in its neutral state and the charges of the ion cloud generated by the ionizer 18 no longer interact with the charges of the item to be weighed, the ion wind generated by the ionizer 18 has nevertheless an undesired, falsifying effect on the calculated weight values.
- provisional weighing values remains stable within specified limits. Only then will - ideally only from the other provisional weight values - the final weight value is calculated and output.
- FIG. 3a shows a second exemplary course of weight values 28' when the scale 10 is operated with the ionizer 18. Reference symbols which correspond to those from FIG. 2 correspond to the points in time or periods of time there.
- FIG. 3a shows a weighing value profile 28' in which the ionizer 18 is switched on and off in a pulsed manner in its activated state (time segment Ti).
- time segment Ti time segment Ti
- the times at which the ionizer is switched on are identified as t3i and those at which the ionizer is switched off as t32.
- the electrostatic charge state of the item to be weighed is the only disruptive factor in the weighing chamber 12 that affects the accuracy of the weight value, the successively calculated, provisional weight values only change when the ionizer 18 is switched on, but not when this is switched off.
- FIG. 4 shows a fourth exemplary course of weight values 28'' when operating a scale 10 with an ionizer 18.
- the ionizer operation is divided into a detection phase (time segment T 2 ) and a neutralization phase (time segment T 3 ).
- the detection phase T2 initially only positive or only negative ion clouds are alternately generated by means of the ionizer 18 and introduced into the weighing chamber 12.
- the times at which only positive ions are generated are marked t33; the times at which only negative ions are generated are marked t34.
- the goods to be weighed are predominantly negatively electrostatically charged, therefore introducing positively charged ion clouds into the weighing chamber 12 causes larger changes in the preliminary weighing values than introducing negatively charged ion clouds.
- the electrostatic charge state of the item to be weighed is recognized by the weighing electronics 20 on the basis of this difference in the course of the weighing value 28′′′.
- a neutralization phase T 3 which follows the recognition phase T 2 , only an ion cloud of that sign can be generated by means of the ionizer 18 which is opposite to the electrostatic charge state of the item to be weighed. In this way, the neutralization of the electrostatic charge on the item to be weighed and thus the overall duration of the weighing process can be further accelerated.
- History of the weighing value when the item to be weighed reaches its electrostatic neutral state ts History of the weighing value when the ionizer is deactivated ⁇ b History of the weighing value after the ionizer has been deactivated
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Elimination Of Static Electricity (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023570336A JP2024506418A (ja) | 2021-02-23 | 2022-02-04 | イオナイザを備えた天秤を動作させる方法 |
EP22703650.6A EP4298409A1 (de) | 2021-02-23 | 2022-02-04 | Verfahren zum betrieb einer waage mit ionisator |
KR1020237026949A KR20230127349A (ko) | 2021-02-23 | 2022-02-04 | 이온화 장치를 구비하는 계량 장치를 작동하기 위한방법 |
CN202280008646.7A CN116724215A (zh) | 2021-02-23 | 2022-02-04 | 用于运行具有电离器的天平的方法 |
US18/454,322 US20230392974A1 (en) | 2021-02-23 | 2023-08-23 | Method of operating a balance with ionizer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021104307.7 | 2021-02-23 | ||
DE102021104307.7A DE102021104307A1 (de) | 2021-02-23 | 2021-02-23 | Verfahren zum Betrieb einer Waage mit Ionisator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/454,322 Continuation US20230392974A1 (en) | 2021-02-23 | 2023-08-23 | Method of operating a balance with ionizer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022179824A1 true WO2022179824A1 (de) | 2022-09-01 |
Family
ID=80447554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/052666 WO2022179824A1 (de) | 2021-02-23 | 2022-02-04 | Verfahren zum betrieb einer waage mit ionisator |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230392974A1 (de) |
EP (1) | EP4298409A1 (de) |
JP (1) | JP2024506418A (de) |
KR (1) | KR20230127349A (de) |
CN (1) | CN116724215A (de) |
DE (1) | DE102021104307A1 (de) |
WO (1) | WO2022179824A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1813920B1 (de) | 2006-01-27 | 2009-12-09 | Mettler-Toledo AG | Verfahren und Vorrichtung zum Betrieb einer Waage |
DE202008017708U1 (de) | 2008-12-17 | 2010-05-06 | Sartorius Ag | Waage zur Wägung von elektrostatisch aufgeladenem Wägegut |
DE102013103031A1 (de) * | 2012-03-30 | 2013-10-02 | Smc Kabushiki Kaisha | Vorrichtung zum Erzeugen einer elektrischen Ladung |
EP2757354A1 (de) | 2013-01-22 | 2014-07-23 | Mettler-Toledo AG | Detektion elektrostatischer Kräfte |
JP2016173308A (ja) | 2015-03-17 | 2016-09-29 | 株式会社島津製作所 | 電子天秤 |
-
2021
- 2021-02-23 DE DE102021104307.7A patent/DE102021104307A1/de active Pending
-
2022
- 2022-02-04 JP JP2023570336A patent/JP2024506418A/ja active Pending
- 2022-02-04 CN CN202280008646.7A patent/CN116724215A/zh active Pending
- 2022-02-04 KR KR1020237026949A patent/KR20230127349A/ko unknown
- 2022-02-04 EP EP22703650.6A patent/EP4298409A1/de active Pending
- 2022-02-04 WO PCT/EP2022/052666 patent/WO2022179824A1/de active Application Filing
-
2023
- 2023-08-23 US US18/454,322 patent/US20230392974A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1813920B1 (de) | 2006-01-27 | 2009-12-09 | Mettler-Toledo AG | Verfahren und Vorrichtung zum Betrieb einer Waage |
DE202008017708U1 (de) | 2008-12-17 | 2010-05-06 | Sartorius Ag | Waage zur Wägung von elektrostatisch aufgeladenem Wägegut |
DE102013103031A1 (de) * | 2012-03-30 | 2013-10-02 | Smc Kabushiki Kaisha | Vorrichtung zum Erzeugen einer elektrischen Ladung |
EP2757354A1 (de) | 2013-01-22 | 2014-07-23 | Mettler-Toledo AG | Detektion elektrostatischer Kräfte |
JP2016173308A (ja) | 2015-03-17 | 2016-09-29 | 株式会社島津製作所 | 電子天秤 |
Also Published As
Publication number | Publication date |
---|---|
DE102021104307A1 (de) | 2022-08-25 |
KR20230127349A (ko) | 2023-08-31 |
EP4298409A1 (de) | 2024-01-03 |
US20230392974A1 (en) | 2023-12-07 |
JP2024506418A (ja) | 2024-02-13 |
CN116724215A (zh) | 2023-09-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1813920B1 (de) | Verfahren und Vorrichtung zum Betrieb einer Waage | |
EP1219030B1 (de) | Näherungssensor und verfahren zu seinem betrieb | |
DE102013104781A1 (de) | Verfahren zur Überwachung zumindest einer medienspezifischen Eigenschaft eines Mediums | |
EP3146318B1 (de) | Verfahren zur ermittlung wenigstens eines physikalischen parameters mittels einer sensoreinheit | |
EP2757354B1 (de) | Detektion elektrostatischer Kräfte | |
WO2008151683A1 (de) | Betriebsverfahren und schaltungsanordnung für einen kapazitiven mikromechanischen sensor mit analoger rückstellung | |
EP3101395B1 (de) | Verfahren zur detektion einer schaumgrenze und entsprechend ausgestattete vorrichtung | |
DE68915556T2 (de) | Gasfühler. | |
WO2022179824A1 (de) | Verfahren zum betrieb einer waage mit ionisator | |
EP1880164A1 (de) | Berührungsloses messverfahren sowie vorrichtung an einer textilmaschine | |
DE202018006650U1 (de) | Elektronisches Gerät mit induktivem Sensor | |
EP0172477A2 (de) | Verfahren und Vorrichtung zur Registrierung von Teilchen oder Quanten mit Hilfe eines Detektors | |
AT523591B1 (de) | Vorrichtung und Verfahren zur Messung von Eigenschaften eines Fluids | |
DE102012211600B4 (de) | Verbesserung des Dynamikbereichs für die Massenspektrometrie | |
EP0916930B1 (de) | Schaltungsanordnung zur kapazitiven Erfassung des Füllstandes von Füllgut in einem Behälter | |
EP2581890B1 (de) | Verfahren zur Erhöhung der Fehlalarmsicherheit eines Brandmelders | |
EP3259622A1 (de) | Verfahren und vorrichtung zum detektieren eines hinter einem gegenstand verborgenen objekts | |
DE102011050004A1 (de) | Eigensicherer Drucksensor | |
DE102010035381A1 (de) | Messverfahren und Messanordnung zur Erfassung der zeitlichen Veränderung einer elektrischen Kapazität | |
DE10344462B4 (de) | Partikel-Massen-Spektrometer zur Detektion von Nanopartikeln und Verfahren | |
EP3396352A1 (de) | Verfahren und einrichtung zur extraktiven bestimmung der konzentration von ein oder mehreren stoffen | |
DE102013222759B4 (de) | Ladungsverstärker für einen kapazitiven Sensor | |
DE19854780C2 (de) | Ionisationsrauchmelder | |
WO2009024301A1 (de) | Sensorsystem zum erfassen von analyten in geringer konzentration | |
AT523773A1 (de) | Luftionisierungsvorrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22703650 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 202280008646.7 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023570336 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 20237026949 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020237026949 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022703650 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022703650 Country of ref document: EP Effective date: 20230925 |