CN112881260B - Filter element detection method, filter element detection system and water purification equipment - Google Patents
Filter element detection method, filter element detection system and water purification equipment Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000746 purification Methods 0.000 title claims abstract description 24
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention relates to a filter element detection method, a filter element detection system and water purification equipment, wherein the filter element detection method is characterized in that a one-to-one correspondence relationship between each read-write working power of a label reader-writer and information in labels arranged corresponding to filter elements at all levels is established in advance, then the label reader-writer executes the reading work of the information in the labels at any preset read-write working power, whether the labels are lost is judged according to the reading result of the information in the labels, and whether the misplacement of the filter element arrangement position occurs is judged according to the read information in the labels, so that the filter element loss detection can be realized, the accurate detection on the misplacement of the filter element position can be carried out, the filter element filtering effect is prevented from being influenced due to the filter element loss or/and the misplacement of the filter element, the normal filtering and water purifying effects of the filter elements at all levels can be ensured, and the water purifying quality and the water purifying efficiency are improved.
Description
Technical Field
The invention relates to the field of water purification equipment, in particular to a filter element detection method, a filter element detection system and water purification equipment.
Background
With the continuous improvement of the requirements of people on the quality of drinking water, various water purifying devices with water purifying functions are pushed out in sequence, and a water dispenser is a common water purifying device.
Present day water purification devices typically have multiple filtration stages, each stage typically involving a different type of filter element. Along with the continuous accumulation of water purification unit's live time, each filter core can accumulate impurity, and filter core efficiency and efficiency can reduce, so need in time change the filter core according to the change cycle of each filter core, just can maintain water purification unit's filtration function's at different levels normal condition. Therefore, each filter element has a certain service life, the water purification equipment can make a prompt for replacing the filter element once the accumulated service time of the filter element reaches a certain accumulated time amount by calculating the accumulated service time of each filter element.
The invention patent CN104815477B granted by China discloses a method for recording the service life of a filter element of a water purifier, which comprises the following steps: s1: installing an RFID label on a water purifier filter element, integrating an RFID reader-writer in a water purifier controller, and identifying the water purifier filter element by reading the RFID label of the water purifier filter element by the water purifier controller; the RFID reader-writer comprises a plurality of antenna coils and an electronic switch for switching the antenna coils; the RFID label on each water purifier filter element corresponds to one antenna coil of the RFID reader-writer one by one; the water purifier controller controls the electronic switch and sequentially switches the switch so that the RFID reader-writer on the water purifier controller corresponds to the RFID tag on the water purifier filter element; s2: the water purifier controller judges whether the identified water purifier filter element is a filter which is not used: if the filter element is judged to be used, calculating the service time of the filter element to calculate the residual service life of the filter element, otherwise, resetting the service time of the filter element. And each RFID label can store corresponding filter element manufacturer information, filter element model information and service life information. When the RFID reader-writer works, the coils are switched by the electronic switch, the RFID reader-writer can be connected with only one coil at a time, and the coils are spaced at a certain distance to avoid interference among the coils. The reading and writing distance between the RFID reader-writer and the tags is adjusted according to practical application, and each coil can only read the corresponding tags and cannot simultaneously read the nearby tags. The water purifier controller controls the electronic switch, and the switch is switched in sequence, so that the information in the used label can be read, and the corresponding filter element can be identified. When the residual service life of the filter element is calculated, the service time of the filter element calculated by accumulation can be selected, and the residual service life of the filter element can be obtained by subtracting the accumulated service time from the service life of the filter element leaving a factory. When the service life of the filter element is due, a user can be automatically reminded to replace the filter element, and the whole system can automatically complete the filter element replacement without manual intervention and simultaneously reduce the complicated steps of filter element replacement.
However, the method for recording the service life of the filter element of the water purifier, which is disclosed by the invention patent CN104815477B, has the following defects: the RFID reader-writer switches the coils through the electronic switch, so that the coils switched each time can only read information in one corresponding label, but cannot simultaneously read nearby labels. Once the filter element is not installed at the corresponding filter element installation position, the filter element is the misplaced filter element with the wrong installation position, the RFID reader in the scheme can still normally read the information in the RFID tag corresponding to the misplaced filter element, but cannot detect that the installation position of the misplaced filter element is wrong, and thus cannot give a prompt that the installation position of the filter element is misplaced. Because the filter elements at all levels in the water purifier play different filtering effects in the water purifying process, once the installation positions of the filter elements are wrong and prompt and correction are not made in time, the normal water purifying effect of the water purifier is very easy to reduce, and the water purifying quality and the water purifying efficiency are influenced.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a filter element detection method aiming at the above prior art. By the filter element detection method, the missing condition detection and the misplacing condition detection of the positions of the filter elements at all levels can be realized.
The second technical problem to be solved by the present invention is to provide a filter element detection system for implementing the above-mentioned filter element detection method.
The third technical problem to be solved by the invention is to provide a water purification device with the filter element detection system.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the filter element detection method is characterized by comprising the following steps of S1-S4:
step S1, pre-establishing a one-to-one correspondence relationship between the read-write working power when a label reader-writer respectively reads labels set by each level of filter element and information in the labels set by each level of filter element; wherein, each reading and writing working power and the distance value between each corresponding stage of filter core and the label reader-writer are in positive correlation;
s2, enabling the tag reader-writer to start tag reading work in a traversal mode according to the reading-writing work power set in the S1;
s3, judging the filter element missing condition according to the label reading result of the label reader-writer:
when the information in the label corresponding to the read-write working power is not read, executing the corresponding operation aiming at the filter element corresponding to the information in the label which is lacked; otherwise, go to step S4;
s4, judging the filter element setting position according to the information in the label read by the label reader-writer:
when the read information in the label is the information in the label corresponding to the read-write working power which is larger than the read-write working power, executing the corresponding operation of the filter element setting position corresponding to the read information in the label, wherein the filter element setting position is staggered; otherwise, judging that the filter element setting position corresponding to the read information in the label is not misplaced.
In the filter element detection method, the one-to-one correspondence relationship between the read-write working power when the label reader-writer reads the labels arranged on the filter elements at each level and the information in the labels arranged on the corresponding filter elements at each level is pre-established, the label reader-writer executes the reading work of the information in the labels by traversing the preset read-write working powers respectively, whether label missing exists is judged according to the reading result of the information in the labels, and whether the misplacement of the filter element arrangement position occurs is judged according to the read information in the labels, so that the filter element missing detection can be realized, the accurate detection on the misplacement of the filter element position can be carried out, the influence on the filter effect of the filter element due to the missing or/and misplacement of the filter element position is avoided, and the normal service life of the filter element is finally influenced.
By executing the coping operation aiming at the filter element corresponding to the information in the missing label, the user can be prompted to add the missing filter element in time, and by executing the coping operation aiming at the error arrangement of the filter element corresponding to the read information in the label, the user can be prompted to correct the error arranged filter element to the correct position matched with the error arranged filter element in time, so that the due filtering function of the filter element can be exerted, and the service life of the detected filter element can be prevented from being reduced due to the error arrangement of the position.
In the filter element detection method, the coping operation for the filter element which lacks the information in the label can be a prompting operation, such as voice prompt or light prompt or the combination of the voice prompt and the light prompt. Of course, the handling operation for the filter element setting position corresponding to the read information in the label that is misplaced may also be a prompting operation, for example, a voice prompt or a light prompt or a combination of a voice prompt and a light prompt.
In consideration of the problem that the working power generated in the long-time use process of the tag reader-writer deviates from the working power of the tag reader-writer when the tag reader-writer leaves the factory, the filter element detection method further comprises the step of executing calibration work aiming at the reading and writing working power of the tag reader-writer.
In addition, aiming at the step S1, the invention establishes a one-to-one correspondence relationship between the read-write working power of the tag reader-writer and the information in the tag set by each stage of the filter element in the following steps a1 to a 4:
step a1, taking the lowest working power of a tag reader-writer as the reference reading-writing working power when reading a tag, increasing the reading-writing working power of the tag reader-writer until the tag reader-writer reads information in the tag for the first time, and recording the reading-writing working power corresponding to the tag reader-writer when reading the information in the current tag and the information in the tag corresponding to the reading-writing working power; wherein, the reading and writing working power mark P corresponding to the tag reader-writer when reading the information in the tag for the first time 0 ；
Step a2, sequentially increasing the reading and writing working power of the tag reader-writer, and recording the reading and writing working power corresponding to the tag reader-writer when sequentially reading the information in each tag and the information in the tag corresponding to each reading and writing working power; wherein, the reading and writing working power mark P corresponding to the tag reader-writer when reading the information in the tag for the nth time n-1 ，n≥1；
Step a3, respectively calculating and obtaining reference antenna power corresponding to the label reader-writer when reading the label internal information of each stage of filter element according to the reading and writing working power corresponding to the label reader-writer when reading the label internal information twice, and storing the obtained reference antenna power; the reference antenna power mark P corresponding to the tag reader-writer when reading the information in the tag of the nth-stage filter element n,set ：
P n,set ＝(P n-1 +P n )/2；
And a4, taking the relationship between the information in the label of each stage of filter element read by the label reader-writer and the corresponding reference antenna power when the information in the corresponding label is read as the one-to-one corresponding relationship in the step 1.
The technical scheme adopted by the invention for solving the second technical problem is as follows: the filter element detection system for realizing the filter element detection method is characterized by comprising the following steps:
the label reader-writer is arranged at a position with different distances from each stage of filter cores in the water purification equipment so as to read information in the labels on each stage of filter cores;
and the processor is connected with the label reader-writer, pre-establishes a one-to-one correspondence relationship between the reading and writing working power when the label reader-writer respectively reads the labels set by the filter elements at all levels and the information in the labels set by the filter elements at all levels, controls the reading and writing working power of the label reader-writer, and respectively makes filter element missing condition judgment and filter element setting position condition judgment according to the label reading result of the label reader-writer.
In order to prompt a user of the filter element missing and the filter element misplacement in time, the filter element detection system further comprises a first prompt device for prompting the filter element missing condition and a second prompt device for prompting the filter element misplacement condition. For example, the first prompting device may be a voice prompting device or a light prompting device or a combination of the voice prompting device and the light prompting device. Similarly, the second prompting device may be a voice prompting device or a light prompting device or a combination of the voice prompting device and the light prompting device.
In order to simplify the structure of the prompting device aiming at the conditions of filter element missing and filter element misplacement and reduce the product cost, the first prompting device and the second prompting device in the invention can be integrated. Utilize an integrated suggestion device, both can make the suggestion to the filter core disappearance condition, can make the suggestion to the filter core misplace condition again.
In order to satisfy the one-to-one correspondence relationship between each read-write working power of the tag reader-writer and the information in the tag set corresponding to each stage of filter core in advance and enable each read-write working power and the distance value between each stage of corresponding filter core and the tag reader-writer to be in a positive correlation relationship, in the filter core detection system, the tag reader-writer is provided with a plurality of antennas formed by sections arranged in a step-shaped mode, and the distances between each section of the antenna and each stage of filter core are different. That is to say, each section on the antenna corresponds to one stage of filter element, and because the sections on the antenna are distributed in a step shape, a plurality of distances between each stage of filter element and the corresponding section are obtained, and the distances are different from each other. When the tag reader-writer executes the reading work of the information in the tag, because the tag distance which can be read by the tag reader-writer is positively correlated with the reading and writing working power of the tag reader-writer, when the tag reader-writer works at a lower reading and writing working power, the antenna in the tag reader-writer can only read the information in the tag of the first-stage filter element corresponding to the current reading and writing working power or the information in the tag of the first-stage filter element closer to the antenna, but cannot read the information in the tag of the first-stage filter element farther from the antenna.
The technical scheme adopted by the invention for solving the third technical problem is as follows: the water purification equipment is provided with a plurality of stages of filter elements, and each stage of filter element is provided with a label corresponding to the stage of filter element. Wherein, the water purification device in the invention can be a water purifier or other purification devices adopting multi-stage filter elements.
Compared with the prior art, the invention has the advantages that: according to the invention, the one-to-one correspondence relationship between the reading and writing working power when the label reader-writer reads the labels arranged on the filter cores at all levels and the information in the labels arranged on the corresponding filter cores at all levels is pre-established, then the label reader-writer executes the reading work of the information in the labels at any preset reading and writing working power, and judges whether the labels are lost or not according to the reading result of the information in the labels, and also judges whether the misplacement of the filter core arrangement position occurs or not according to the read information in the labels, so that the filter core missing detection can be realized, the filter core position misplacement can be accurately detected, the filter core filtering effect is prevented from being influenced due to the filter core missing or/and the filter core position misplacement, and the normal service life of the filter core is finally influenced. So, can ensure that filter core at each level plays normal filtration water purification effect separately in its correct setting position, improve water purification quality and water purification efficiency.
Drawings
FIG. 1 is a schematic flow diagram of a method for inspecting a filter element according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the connection of the main components of the filter cartridge testing system according to an embodiment of the present invention;
fig. 3 is a schematic view showing the arrangement of the main structure in the water purification apparatus in the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The embodiment provides a filter element detection method for a water purifier. Suppose that a four-stage Filter element is arranged in the water purifier, and the four-stage Filter element is a1 st stage Filter element respectively 1 2 nd stage Filter element Filter 2 3 rd stage Filter element Filter 3 And a4 th stage Filter element 4 . Specifically, referring to fig. 1, the filter element detection method includes the following steps S1 to S4:
step S1, pre-establishing a one-to-one correspondence relationship between the read-write working power when a label reader-writer respectively reads labels set by each level of filter element and information in the labels set by each level of filter element; when the label reader-writer reads the label set on the filter element, the reading-writing working power and the distance value between each corresponding filter element and the label reader-writer are in positive correlation; the tag in this embodiment may be an RFID tag or other electronic tag that can store information for scanning and reading by an external device; correspondingly, the tag reader-writer is an RFID tag reader-writer or other electronic tag reader-writers;
it is assumed that, in the one-to-one correspondence relationship established in advance:
filter for level 1 Filter element 1 Filter of the 1 st stage Filter element 1 The Label set on is Label 1 The label reader-writer reads the Filter of the 1 st level Filter element 1 The corresponding read-write working power is P 1 ；
Filter for 2 nd stage Filter element 2 Filter of the 2 nd stage Filter element 2 The Label set on is Label 2 And a label reader-writer reads the 2 nd-level Filter element 2 The corresponding read-write working power is P 2 ；
Filter for 3 rd stage Filter element 3 Filter of the 3 rd stage Filter element 3 The Label set on is Label 3 And a label reader-writer reads the 3 rd Filter element 3 The corresponding read-write working power is P 3 ；
Filter for 4 th-stage Filter element 4 Stage 4 Filter element Filter 4 The Label set on is Label 4 And a label reader-writer reads the 4 th-level Filter element 4 The corresponding read-write working power is P 4 ；
Wherein, the distance between the label reader and the four-stage filter element is d 1 、d 2 、d 3 And d 4 And d is 1 <d 2 <d 3 <d 4 ；
S2, enabling the tag reader-writer to start tag reading work in a traversal mode according to the reading-writing work power set in the S1; that is, the tag reader/writer respectively uses the read/write operation power as P 1 ～P 4 The four read-write working powers respectively start tag reading work and execute the subsequent steps S3 and S4;
for example, regarding the "ergodic manner" here, the tag reader of this embodiment may be made to first use the read-write operating power P 3 To start the tag reading operation, after the steps S3 and S4 are completed, the tag reader of the embodiment is enabled to use the reading/writing operation power P 2 Starting the tag reading work and executing the step S3 and the step S4; then, the tag reader-writer respectively reads and writes the working power P in the same way 1 And read-write operating power P 4 Step S3 and step S4 are performed.
Step S3, judging the filter element missing condition according to the label reading result of the label reader-writer:
when not reading the read-write working power P 3 The corresponding 3 rd stage Filter element 3 Label arranged on the Label 3 When the information is internal, the current lack of the Filter of the 3 rd stage Filter element is explained 3 At this time, execute the Label for the missing Label 3 Level 3 corresponding to the internal informationFilter element Filter 3 Coping operations of (1); otherwise, the description has read that the 3 rd stage Filter element Filter has been read 3 Label arranged on the Label 3 Internal information, the 3 rd Filter element Filter 3 If no deletion exists, the step S4 is switched to; wherein here the Label is deleted for 3 Filter element corresponding to internal information 3 The coping operation can be a prompt operation, such as voice prompt or light prompt or the combination of the voice prompt and the light prompt;
s4, judging the filter element setting position according to the information in the label read by the label reader-writer:
when the read information in the label is the information in the label corresponding to the read-write working power which is larger than the read-write working power, executing the corresponding operation of the filter element setting position corresponding to the read information in the label, wherein the filter element setting position is staggered; otherwise, judging that the filter element setting position corresponding to the read information in the label is not misplaced.
For example, when step S4 is executed, the tag reader/writer reads the tag Label 4 Internal information, i.e. the tag reader is currently at read-write operating power P 3 Label is read 4 Internal information indicating the Label at this time 4 Corresponding Filter element Filter 4 Not arranged at a distance d from the tag reader/writer 4 At a distance of (2), a Filter element Filter 4 Is misplaced. This is because, if the Filter element Filter 4 Arranged at a distance d from the tag reader-writer 4 Then, the tag reader/writer at this time has the read/write operating power P 3 Is that the Label cannot be read 4 The information is contained. Then, the Filter element Filter is detected 4 When the setting position of the tag is wrong, the tag Label read is executed 4 Filter element Filter corresponding to internal information 4 And handling operation of setting position dislocation.
Of course, in this embodiment, before step S1 is executed, calibration work for the read/write operating power of the tag reader/writer is also executed, so as to avoid adverse effects caused by operating power generated by the tag reader/writer during long-time use and operating power deviation when the tag reader/writer leaves the factory.
In addition, in step S1 of this embodiment, a one-to-one correspondence relationship between the read-write operating power of the tag reader/writer and the information in the tag set in each stage of the filter core is specifically established in the following steps a1 to a 4:
step a1, taking the lowest working power of a tag reader-writer as the reference reading-writing working power when reading a tag, increasing the reading-writing working power of the tag reader-writer until the tag reader-writer reads information in the tag for the first time, and recording the reading-writing working power corresponding to the tag reader-writer when reading the information in the current tag and the information in the tag corresponding to the reading-writing working power; wherein, the reading and writing working power mark p corresponding to the tag reader-writer when reading the information in the tag for the first time 0 ；
That is, after the tag reader is started, assuming that the lowest working power of the tag reader is pa, then the lowest working power pa is used as the reference reading and writing working power, and the reading and writing working power of the tag reader is gradually increased until the tag reader reads the information in the tag for the first time, at this time, the tag read by the tag reader for the first time is actually the level 1 Filter 1 Label of (2) 1 Then reading the Label reader-writer to the current Label 1 The corresponding read-write working power is recorded as p 0 ；
Step a2, sequentially increasing the reading and writing working power of the tag reader-writer, and recording the reading and writing working power corresponding to the tag reader-writer when sequentially reading the information of each tag and the information in the tag corresponding to the reading and writing working power; wherein, the reading and writing working power mark p corresponding to the tag reader-writer when reading the information in the tag for the nth time n-1 ，n≥1；
According to the mode of the step a1, the read-write working power p of the label reader-writer is increased 1 Gradually increasing the read-write working power of the tag reader-writer again until the tag reader-writer reads the information in the tag for the second time, wherein the tag read by the tag reader-writer for the second time is actually read by the tag reader-writerNamely a2 nd stage Filter element Filter 2 Label of (2) 2 Then reading the Label reader-writer to the current Label 2 The corresponding read-write working power is recorded as p 1 (ii) a The steps are continuously executed until the Label is read in sequence 3 Read-write working power p corresponding to time 2 And reading the tag Label 4 Read-write working power p corresponding to time 3 ；
Step a3, respectively calculating and obtaining reference antenna power corresponding to the label reader-writer when reading the label internal information of each stage of filter element according to the reading and writing working power corresponding to the label reader-writer when reading the label internal information twice, and storing the obtained reference antenna power; the reference antenna power mark P corresponding to the tag reader-writer when reading the information in the tag of the nth-stage filter element n,set ：
P n,set ＝(p n-1 +p n )/2；
That is, the Label reader/writer reads the Label of the 1 st stage filter element 1 Reference antenna power P corresponding to internal information 1,set ＝(p 0 +p 1 ) 2; label of grade 2 filter core is being read to Label read write line 2 Reference antenna power P corresponding to internal information 2,set ＝(p 1 +p 2 ) 2; the Label reader-writer reads the Label of the 3 rd stage filter element 3 Reference antenna power P corresponding to internal information 3,set ＝(p 2 +p 3 ) 2; the Label reader-writer reads the Label of the 4 th-stage filter element 4 Reference antenna power P corresponding to internal information 4,set ＝(p 3 +p 4 )/2；
And a4, taking the relation between the information in the label of each filter element read by the label reader-writer and the reference antenna power corresponding to the information in the corresponding label as the one-to-one corresponding relation in the step 1. In this embodiment, the reference antenna power of the antenna in the tag reader-writer is the read-write operating power of the tag reader-writer. In the one-to-one correspondence of step a 4:
corresponding reading of label reader-writerTaking a1 st stage filter element Label 1 The power of the reference antenna corresponding to the internal information is P 1,set And the Label reader-writer correspondingly reads the 2 nd-stage filter element Label 2 The power of the reference antenna corresponding to the internal information is P 2,set And the Label reader-writer correspondingly reads the 3 rd-level filter element Label 3 The power of the reference antenna corresponding to the internal information is P 3,set And the Label reader-writer correspondingly reads the 4 th-stage filter element Label 4 The power of the reference antenna corresponding to the internal information is P 4,set . I.e. the reference antenna power P 1,set And the read-write working power P in the step S1 1 Equivalent, reference antenna power P 2,set And the read-write working power P in the step S1 2 Equivalent, reference antenna power P 3,set And the read-write working power P in the step S1 3 Equivalent, reference antenna power P 4,set And the read-write working power P in the step S1 4 And (4) equivalence.
The embodiment also provides a filter element detection system for realizing the filter element detection method. Specifically, referring to fig. 2, the filter element detection system includes a tag reader-writer 11, a processor 12, a first prompting device 13, and a second prompting device 14, where the processor 12 is connected to the tag reader-writer 11, the first prompting device 13, and the second prompting device 14, respectively, and the tag reader-writer 11 is disposed at a position having a different distance from each stage of filter elements 2 in the water purifier to perform reading operation on information in tags on each stage of filter elements 2; the processor 12 is responsible for pre-establishing a one-to-one correspondence relationship between the read-write working power of the tag reader-writer when reading the tags set on the filter elements at all levels and the information in the tags set on the filter elements at all levels, controlling the read-write working power of the tag reader-writer, and making filter element missing condition judgment and filter element setting position condition judgment respectively according to the tag reading result of the tag reader-writer, the first prompting device 13 is responsible for prompting the filter element missing condition, and the second prompting device 14 is responsible for prompting the filter element setting position misplacing condition. The first prompting device 13 may be a voice prompting device or a light prompting device or a combination of the voice prompting device and the light prompting device. Similarly, the second prompting device 14 may be a voice prompting device or a light prompting device or a combination of the voice prompting device and the light prompting device.
As shown in fig. 2, the tag reader/writer 11 in this embodiment has an antenna 15 formed of a plurality of segments 151 arranged in a stepped manner, and the distances between the respective segments 151 of the antenna 15 and the respective stages of the filter elements 2 are different. Thus, the tag reader/writer 11 operates at the reading/writing power P 3 When the information reading work in the label is executed, the distance between the antenna and the label is d 1 、d 2 And d 3 The information in the tags on the three filter elements can be scanned by the three corresponding segments 151 of the antenna, so that the tag reader-writer can read the information in the three tags, and the tag reader-writer cannot acquire the distance d from the antenna due to the limitation of the reading working power 4 The label on the filter element.
Of course, the first prompting device 13 and the second prompting device 14 can be integrated according to actual needs. Therefore, the structure of the prompting device aiming at the conditions of filter element missing and filter element position misplacement can be simplified, and the product cost is reduced.
This embodiment still provides one kind and can realize the water purifier that the filter core detected. Specifically, referring to fig. 3, the water purifier has multiple stages of filter elements 2 and the above-mentioned filter element detection system, and each stage of filter element 2 is provided with a label 3 corresponding to the stage of filter element; wherein the label reader/writer 11 is disposed at different distances from the respective stages of the filter cartridge 2.
Of course, the filter element detection system in this embodiment can also be applied to other purification devices using multi-stage filter elements.
Claims (8)
1. The filter element detection method is characterized by comprising the following steps of S1-S4:
step S1, pre-establishing a one-to-one correspondence relationship between the read-write working power when a label reader-writer respectively reads labels set by each level of filter element and information in the labels set by each level of filter element; wherein, each reading and writing working power and the distance value between each corresponding stage of filter core and the label reader-writer are in positive correlation; in step S1, a one-to-one correspondence relationship between the read-write operating power of the tag reader/writer and the information in the tag set in each stage of the filter element is established in the following steps a1 to a 4:
step a1, taking the lowest working power of a tag reader-writer as the reference reading-writing working power when reading a tag, increasing the reading-writing working power of the tag reader-writer until the tag reader-writer reads information in the tag for the first time, and recording the reading-writing working power corresponding to the tag reader-writer when reading the information in the current tag and the information in the tag corresponding to the reading-writing working power; wherein, the reading and writing working power mark P corresponding to the tag reader-writer when reading the information in the tag for the first time 0 ；
Step a2, sequentially increasing the reading and writing working power of the tag reader-writer, and recording the reading and writing working power corresponding to the tag reader-writer when sequentially reading the information in each tag and the information in the tag corresponding to each reading and writing working power; wherein, the reading and writing working power mark P corresponding to the tag reader-writer when reading the information in the tag for the nth time n-1 ，n≥1；
Step a3, respectively calculating and obtaining reference antenna power corresponding to the label reader-writer when reading the label internal information of each stage of filter element according to the reading and writing working power corresponding to the label reader-writer when reading the label internal information twice, and storing the obtained reference antenna power; the reference antenna power mark P corresponding to the tag reader-writer when reading the information in the tag of the nth-stage filter element n,set ：
P n,set ＝(P n-1 +P n )/2；
Step a4, taking the relationship between the label internal information of each stage of filter core read by the label reader-writer and the corresponding reference antenna power when reading the corresponding label internal information as the one-to-one corresponding relationship in the step S1;
s2, enabling the tag reader-writer to start tag reading work in a traversal mode according to the reading-writing work power set in the S1;
step S3, judging the filter element missing condition according to the label reading result of the label reader-writer:
when the information in the label corresponding to the read-write working power is not read, executing the corresponding operation aiming at the filter element corresponding to the information in the label which is lacked; otherwise, go to step S4;
s4, judging the filter element setting position according to the information in the label read by the label reader-writer:
when the read information in the label is the information in the label corresponding to the read-write working power which is larger than the read-write working power, executing the corresponding operation of the filter element setting position corresponding to the read information in the label, wherein the filter element setting position is staggered; otherwise, judging that the filter element setting position corresponding to the read information in the label is not misplaced.
2. The filter element detection method according to claim 1, further comprising performing calibration work for read/write operation power of the tag reader/writer before performing step S1.
3. A cartridge testing system for implementing the cartridge testing method of claim 1, comprising:
the label reader-writer (11) is arranged at a position with different distances from each stage of filter element (2) in the water purification equipment so as to read information in the label (3) on each stage of filter element (2);
and the processor (12) is connected with the label reader-writer (11), establishes a one-to-one correspondence relationship between the read-write working power when the label reader-writer respectively reads the labels arranged on the filter cores at all levels and the information in the labels arranged on the filter cores at all levels in advance, controls the read-write working power of the label reader-writer, and respectively makes filter core missing condition judgment and filter core arrangement position condition judgment according to the label reading result of the label reader-writer.
4. The filter element detection system according to claim 3, further comprising a first prompt device (13) for prompting the condition of filter element missing and a second prompt device (14) for prompting the condition of filter element arrangement misplacement.
5. The cartridge testing system according to claim 4, characterized in that the first prompting device (13) and the second prompting device (14) are integrated.
6. The cartridge testing system according to any of claims 3 to 5, wherein the tag reader/writer (11) has an antenna (15) formed by a plurality of stages (151) arranged in a step-like manner, and the distances between each stage (151) of the antenna (15) and each stage cartridge (2) are different.
7. Water purification installation with multistage filter elements (2), each stage of filter element (2) being provided with a label (3) corresponding to the stage, characterized in that it also has a filter element detection system according to any one of claims 3 to 6.
8. Water purification apparatus according to claim 7, wherein the water purification apparatus is a water purifier or other purification apparatus employing a multi-stage filter element.
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