CN109078416B - Forced consumable management system and air purification equipment - Google Patents
Forced consumable management system and air purification equipment Download PDFInfo
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- CN109078416B CN109078416B CN201811062186.8A CN201811062186A CN109078416B CN 109078416 B CN109078416 B CN 109078416B CN 201811062186 A CN201811062186 A CN 201811062186A CN 109078416 B CN109078416 B CN 109078416B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
Abstract
The invention discloses a forced consumable management system, which comprises a consumable life detection system for judging whether a consumable needs to be replaced, a consumable installation state detection module for judging whether the consumable is installed or replaced, and an equipment state switching module for switching equipment states according to the consumable installation/replacement state or the consumable life state; the system also comprises a consumable management program configured in the controller of the equipment, wherein the consumable management program is used for controlling the equipment state switching module to switch the equipment state according to the judgment results of the consumable life detection system and the consumable installation/replacement state detection module: when the consumable exceeding the service life is installed or replaced or the consumable is not installed, the apparatus is maintained or switched to the disabled state. Also discloses air purification equipment and a forced consumable management system configured with the air purification equipment. The invention solves the technical problem that the conventional consumable is still continuously used after the service life of the consumable is ended.
Description
Technical Field
The invention relates to the technical field of consumables, in particular to a forced consumable management system and air purification equipment.
Background
The consumable is an accessory product which is frequently consumed, and the consumable can be divided into original consumable and non-original consumable. The consumptive material belongs to and puts into the product for a long time, needs regularly or the change of unscheduled, and whether the consumptive material needs to be changed depends on whether the consumptive material can continue to use. At present, the replacement of consumables is mainly prompted, and no forced replacement measure is taken, so that certain consumables cannot be used continuously if not replaced, and a user has to replace the consumables, such as a printer; however, for other consumables, because a user usually cannot intuitively judge whether to continue to replace the consumables, such as air filtration consumables, water purification consumables and the like, the consumables are overdue, overloaded and even mildewed and deteriorated, and are continuously used in equipment (consumable carriers), and the overdue consumables which are continuously used in the equipment are not only unfavorable for the equipment, but also generate secondary pollution and harm the human health.
In addition, for the life detection of the air filtration consumables, in the prior art, a rated dust holding capacity is determined in advance through destructive experiments, for example, a colorimetric method is used for determining the rated dust holding capacity (the maximum allowable dust holding capacity is determined through detecting the filtration efficiency (the interference of the size of dust particles, the temperature and the humidity and the like is easily received), when the rated dust holding capacity is exceeded, the filtration efficiency is reduced, the dust holding capacity is the rated dust holding capacity, then the service life is determined according to the time reaching the rated dust holding capacity, and finally, counting down is performed according to the determined service life to judge whether the air filtration consumables reach the life limit or not. Therefore, the service life detection method in the prior art is a common estimation method and cannot perform individualized judgment on specific air filtration consumables.
The countdown method completely depends on experience to set the service life, the service life cannot be related to the actual use environment of the consumable, and the set service life is often not consistent with the real dust holding capacity of the consumable: the excessive use of consumables is easy to occur, but the consumables are still judged to be in the service life; or the consumable can be used and the service life is declared in advance; the former influences the result of use, causes the harm to human health, and the latter then causes the waste of consumptive material, has improved use cost.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a forced consumable management system, which solves the technical problem that the consumable is still continuously used after the service life of the consumable in the prior art is ended, and can forcibly supervise the consumable to prompt a user to replace the expired consumable in time.
In order to solve the technical problems, the technical scheme of the invention is as follows: a forced consumable management system comprises a consumable life detection system for judging whether a consumable needs to be replaced, a consumable installation state detection module for judging whether the consumable is installed or replaced, and an equipment state switching module for switching equipment states according to the consumable installation/replacement state or the consumable life state; the system also comprises a consumable management program configured in the controller of the equipment, wherein the consumable management program is used for controlling the equipment state switching module to switch the equipment state according to the judgment results of the consumable life detection system and the consumable installation/replacement state detection module: when the consumable is installed or replaced within the service life, the equipment is maintained or switched to a usable state; when the consumable exceeding the service life is installed or replaced or the consumable is not installed, the apparatus is maintained or switched to the disabled state.
Preferably, the consumable part management program is executed as follows:
step A1: the equipment is initialized to a disabled state;
step A2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step A3; if yes, go to step A4:
step A3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step A4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step a 5;
step A5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step A4; if yes, go to step A6;
step A6: the device state switching module switches the device to the disabled state and proceeds to step a 7;
step A7: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step A5; if not, go to step A8;
step A8: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
Preferably, a countdown program is further configured in the consumable mounting state detection module, and the countdown program is configured to count down when the consumable needs to be replaced and determine whether a consumable replacement event occurs before the countdown is finished.
Preferably, the consumable part management program is executed as follows:
step B1: the equipment is initialized to a disabled state;
step B2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step B3; if yes, go to step B4:
step B3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step B4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step B5;
step B5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step B4; if yes, go to step B6;
step B6: the mounting state detection module counts down when consumable items need to be replaced and judges whether a consumable item replacement event occurs before the counting down is finished; if yes, go back to step B5; if not, go to step B7;
step B7: the device state switching module switches the device to the disabled state and proceeds to step B8;
step B8: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step B5: if not, go to step B9;
step B9: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
Preferably, the forced consumable management system is configured in the air purification equipment, and the consumable life detection system comprises a main controller and a light transmittance acquisition device; a service life detection program for judging the service life of the air filtering consumables according to the light transmittance is configured in the main controller; the light transmittance acquisition device comprises a microcontroller, a light source emitting plate and a light source receiving plate, wherein the light source emitting plate is used for being arranged on one side of an air inlet surface or an air outlet surface of the air filtration consumable; the center of the light source transmitting plate and the center of the light source receiving plate are both provided with air passing holes; the light source emitting plate is also provided with a light emitting unit, and the light source receiving plate is provided with a photosensitive unit capable of converting an optical signal into an electric signal corresponding to the position of the light emitting unit, so that the photosensitive unit can receive the transmitted light of the light emitting unit through the air filtering consumable; the photosensitive unit on the light source receiving plate is connected with the signal input end of the microcontroller so as to output an electric signal converted by the photosensitive unit to the microcontroller; a light transmittance calculation program for calculating light transmittance according to the electric signal sent by the photosensitive unit is configured in the microcontroller; the signal output end of the microcontroller is connected with the signal input end of the main controller so as to send light transmittance to the main controller.
Compared with the prior art, the invention has the following beneficial effects:
1. the consumable management system can switch the equipment state according to the service life state and the consumable installation state of the consumable, only the consumable is installed, and the equipment can be in the available state when the consumable is in the service life, otherwise, the consumable management system is forced to be switched to the forbidden state; thereby avoiding damage to the equipment caused by using the equipment under the condition of no consumable; and meanwhile, the situation that the consumable is still continuously used after the service life of the consumable is ended is also avoided.
2. The invention provides two consumable management programs, one of which is a basic version, and the other is an optimized version, and the management of the equipment state can be carried out according to the service life of the consumable and the installation/replacement state of the consumable; the optimization version is that the installation state detection module is internal configuration countdown procedure, when detecting that the consumptive material surpasss life and needs to be changed, can not switch the equipment state to forbidden state immediately like this, for the consumptive material changes reserve buffer time, realizes the seamless connection that the consumptive material changed, improves user experience and feels.
3. The invention provides a consumable life detection system for an air filtration consumable, which can be used for judging the service life of the consumable according to the relation between the light transmittance and the dust holding capacity (the dust accumulation capacity of the consumable) of the air filtration consumable (the light transmittance is smaller when the dust holding capacity is larger), and skillfully converting the detected dust holding capacity into the detected light transmittance, so that the dust holding capacity of the air filtration consumable is prevented from being directly calculated (if the dust holding capacity is difficult to calculate without experiments), the calculation process is simple, mathematical modeling is not needed, the required parameters are few, the realization is easy, and the popularization and the application are easy.
4. Due to the fact that even the air filtering consumables with the same specification have different real lives from the overall average 6, average or rated life according to different use environments. However, the invention is an individual judgment aiming at specific air filtering consumables, truly reflects the service life of an individual, is an important guarantee for a user to use the air purifying equipment healthily, and can also reduce the use cost.
5. Through setting up a plurality of luminescence units and sensitization unit, can detect the luminousness of different regions on the filtration consumptive material to can evaluate the life of filtration consumptive material on the whole, more scientific avoids with the general, improves the accuracy.
6. Setting a life warning threshold η1And judging whether the service life is ended or not, and judging whether the service life early warning threshold value is reached or not, so that the user can be prompted to prepare in advance for replacing the air filtering consumable material.
7. The light transmittance acquisition device provided by the invention is designed with the air passing hole aiming at the characteristic that air filtering consumables need to enter and exit air, so that the normal operation of air filtering can not be hindered when the transmitted light acquisition is carried out.
8. The light source emitting board and the light source receiving board are both made of printed circuit boards, so that the power supply circuit can be printed on the light source emitting board and the light source receiving board, complex wiring is avoided, the structure is simplified, and the production difficulty is reduced.
9. The light source transmitting plate and the light source receiving plate are frame type, so that the area ratio of the air passing holes can be greatly improved, and the influence of the light source transmitting plate and the light source receiving plate on the air supply amount and the air inlet amount is reduced to the maximum extent.
Drawings
FIG. 1 is a flowchart of a consumable part management program according to embodiment 1;
FIG. 2 is a schematic diagram of the detection principle of the light transmittance acquisition device;
FIG. 3 is a flowchart of a consumable part management program according to embodiment 2;
fig. 4 is a schematic structural view of an air cleaning apparatus in embodiment 3.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Detailed description of the preferred embodiment 1
A forced consumable management system comprises a consumable life detection system for judging whether a consumable needs to be replaced, a consumable installation state detection module for judging whether the consumable is installed or replaced, and an equipment state switching module for switching equipment states according to the consumable installation/replacement state or the consumable life state; the system also comprises a consumable management program configured in the controller of the equipment, wherein the consumable management program is used for controlling the equipment state switching module to switch the equipment state according to the judgment results of the consumable life detection system and the consumable installation/replacement state detection module: when the consumable is installed or replaced within the service life, the equipment is maintained or switched to a usable state; when the consumable exceeding the service life is installed or replaced or the consumable is not installed, the apparatus is maintained or switched to the disabled state.
The consumable installation state detection module comprises the following components and principles: the consumable installation state detection module comprises a trigger component (such as a travel switch, a reset switch, a limit switch or a distance sensor) and a control chip, and when the consumable is installed in a consumable installation cavity of the equipment, the trigger component is triggered to generate a corresponding installation trigger signal (a switching value signal or an analog value signal) and send the installation trigger signal to the control chip; when the consumable is taken down from the equipment, the trigger part generates a corresponding unloading trigger signal and sends the unloading trigger signal to the control chip; the control chip judges the installation state of the consumable according to the change of the received trigger signal: when the unloading trigger signal is changed into an installation trigger signal, the consumable installation event or the consumable replacement event is indicated to occur; when the installation trigger signal is the unloading trigger signal, the consumable unloading event is indicated to occur; in addition, the initial state of the trigger part is a state in which an unload trigger signal is generated. For example, the trigger component adopts a reset switch, the reset switch is installed on the bottom surface or the side surface in the consumable installation cavity, and after the consumable is installed in the consumable installation cavity of the equipment, the reset switch is extruded to be closed to generate an installation trigger signal, wherein the installation trigger signal is a switching value signal of 1; when the consumable is taken down from the equipment, the reset switch is not extruded by the consumable any more, and the reset switch resets to generate a corresponding unloading trigger signal which is a switching value signal of 0 and is sent to the unloading control trigger signal.
The device state switching module comprises the following components and principles:
the equipment state switching module comprises a control chip and an execution component (such as a relay and a contactor), wherein the control chip can receive a state switching command sent by a main controller of the equipment (the state switching command is generated according to the service life of consumables and the installation state), then the execution component is controlled to execute state switching, the execution component can be connected into a loop formed by an equipment motor and a power supply, if the relay is adopted as the execution component, when the equipment needs to be switched into a forbidden state, the contact of the relay is disconnected, the motor and the power supply loop are interrupted, and the equipment is in the forbidden state; when the equipment needs to be switched to the usable state, the relay contact is closed, the motor and the power supply loop are closed, and the equipment is in the usable state.
In this embodiment, as shown in fig. 1, the consumable part management program is executed as follows:
step A1: the equipment is initialized to a disabled state;
step A2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step A3; if yes, go to step A4:
step A3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step A4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step a 5;
step A5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step A4; if yes, go to step A6;
step A6: the device state switching module switches the device to the disabled state and proceeds to step a 7;
step A7: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step A5; if not, go to step A8;
step A8: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
The consumable management system of the embodiment can switch the state of the equipment according to the life state and the installation state of the consumable, the equipment can be in a usable state only when the consumable is installed and the consumable is in the service life, otherwise, the consumable management system is forced to be switched to a forbidden state; thereby avoiding damage to the equipment caused by using the equipment under the condition of no consumable; and meanwhile, the situation that the consumable is still continuously used after the service life of the consumable is ended is also avoided.
The forced consumable management system in this embodiment is configured to be configured in an air purification device, and the consumable life detection system includes a main controller (which may share the same main controller with a device serving as a consumable carrier, or may use a main controller independent of the air purification device) and a light transmittance acquisition device; a service life detection program for judging the service life of the air filtering consumables according to the light transmittance is configured in the main controller; as shown in fig. 2, the light transmittance acquisition device comprises a microcontroller, a light source emitting plate 1 arranged on one side of an air inlet surface or an air outlet surface of the air filtration consumable, and a light source receiving plate 2 arranged on the other side of the air filtration consumable 3 opposite to the light source emitting plate; the center of the light source transmitting plate and the center of the light source receiving plate are both provided with air passing holes; the light source emitting plate is also provided with a light emitting unit 11, and the light source receiving plate is provided with a photosensitive unit 21 capable of converting an optical signal into an electrical signal corresponding to the position of the light emitting unit, so that the photosensitive unit can receive the transmitted light of the light emitting unit through the air filtering consumable; the photosensitive unit on the light source receiving plate is connected with the signal input end of the microcontroller so as to output an electric signal converted by the photosensitive unit to the microcontroller; a light transmittance calculation program for calculating light transmittance according to the electric signal sent by the photosensitive unit is configured in the microcontroller; the signal output end of the microcontroller is connected with the signal input end of the main controller so as to send light transmittance to the main controller.
In this embodiment, be equipped with n luminescence units on the light source emission board, every luminescence unit of one-to-one all is equipped with the sensitization unit on the light source dash receiver to make every sensitization unit can see through the air filtration consumptive material and receive the transmitted light that corresponds the luminescence unit.
In this embodiment, the light transmittance calculation program is executed as follows:
step 101: receiving each current electric signal value sent by each photosensitive unit;
step 102: the current transmittance was calculated as follows:
in the formula (I), the compound is shown in the specification,ia current electrical signal value representing the i-th photosensitive unit, i ═ 1, 2.γ represents the current transmittance.
Initial transmittance gamma0The luminous flux phi 1 of the air inlet surface and the luminous flux phi 2 of the air outlet surface of the air filtering consumable are detected by a densitometer when the air filtering consumable leaves a factory,
0initial transmittance gamma for air filtration consumables when leaving the factory0Corresponding electrical signal value of the photosensitive unit0。
In this embodiment, the life detection program is executed as follows:
step 201: receiving the current light transmittance gamma;
step 202: the current light transmission gamma and the life warning threshold eta are compared1Comparing, the life warning threshold eta1The light transmittance is corresponding to the condition that the air filtering consumables reach more than 50% of rated dust holding capacity; if gamma > eta1If yes, go back to step 201; if gamma is less than or equal to eta1Step 203 is entered;
step 203: comparing the current transmission gamma with an end-of-life threshold eta0Making a comparison, the end-of-life threshold η0The light transmittance is that when the air filtering consumables reach the rated dust holding capacity; if gamma > eta0If so, sending out early warning information to prompt that the air filtration consumables are about to fail; if gamma is less than or equal to eta0If so, the air filtering consumables reach the service life limit, and alarm information is sent out to prompt the user to replace the air filtering consumables.
End of life threshold η0And an end-of-life threshold η0Through experimentsLine determination, life warning threshold η1Preferably, the light transmittance of the air filtering consumables is 97%, 98%, 98.5% or 99% when the air filtering consumables reach more than 90% of the rated dust holding capacity.
In this embodiment, the light source emitting plate 1 and the light source receiving plate 2 are both made of printed circuit boards; the printed board is provided with a power supply management module for connecting a power supply (the power supply of the equipment serving as a consumable carrier can be adopted, and an independent power supply can also be additionally arranged), and is printed with a power supply circuit, and the power supply management module supplies power to the light-emitting unit 11 or the photosensitive unit 21 through the power supply circuit. The light source emitting board 1 and the light source receiving board 2 are both made of printed circuit boards, so that a power supply circuit can be printed on the light source emitting board and the light source receiving board, complex wiring is avoided, the structure is simplified, and the production difficulty is reduced.
In this embodiment, the light source emitting plate 1 and the light source receiving plate 2 are frame-type, that is, a plurality of strip-shaped plates are formed by surrounding the strip-shaped plates end to end, the air passing hole is a window formed by surrounding the strip-shaped plates, and the photosensitive unit 21 or the light emitting unit 11 is disposed on the strip-shaped plates. The light source emitting plate 1 and the light source receiving plate 2 are frame type, so that the area ratio of the air passing holes can be greatly improved, and the influence of the light source emitting plate 1 and the light source receiving plate 2 on the air supply amount and the air inlet amount is reduced to the maximum extent.
In this embodiment, the light emitting unit 11 may be a visible light source or a non-visible light source, such as a visible light LED lamp or an infrared or ultraviolet LED lamp; the photosensitive unit 21 is a photodiode, a phototriode or a photoresistor. The microcontroller receives the electrical signals sent by the individual lighting units 11 simultaneously via the parallel interface. Thus, the time for data processing can be shortened, and the data processing efficiency can be improved.
Detailed description of the preferred embodiment 2
This embodiment differs from embodiment 1 only in that: and a countdown program is also configured in the consumable installation state detection module and used for counting down when the consumable needs to be replaced and judging whether a consumable replacement event occurs before the countdown is finished.
In this embodiment, as shown in fig. 3, the consumable part management program is executed as follows:
step B1: the equipment is initialized to a disabled state;
step B2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step B3; if yes, go to step B4:
step B3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step B4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step B5;
step B5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step B4; if yes, go to step B6;
step B6: the mounting state detection module counts down when consumable items need to be replaced and judges whether a consumable item replacement event occurs before the counting down is finished; if yes, go back to step B5; if not, go to step B7;
step B7: the device state switching module switches the device to the disabled state and proceeds to step B8;
step B8: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step B5: if not, go to step B9;
step B9: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
The forced consumable management system of the embodiment configures a countdown program in the installation state detection module, so that when the consumable exceeding the service life is detected and needs to be replaced, the equipment state cannot be immediately switched to a forbidden state, the buffer time is reserved for consumable replacement, seamless connection of consumable replacement is realized, and the user experience is improved.
Detailed description of preferred embodiments 3
As shown in fig. 4, an air purification apparatus is configured with the forced consumable management system of embodiment 1 or 2, the consumable management program and the life detection program are both configured in a main controller (such as a single chip microcomputer stm32f103, etc., a PLC, etc.) of the air purification apparatus, wherein the light source emitting plate 1 is installed on one side of an air inlet surface or an air outlet surface of the air filtration consumable 3, and the light source receiving plate 2 is installed on the other side of the air filtration consumable 3 relative to the light source emitting plate 1; the main controller is an automatic main controller of the air purification equipment; the micro-control is integrated in the main controller or mounted on the light source receiving board 2.
The light source receiving plate 2 and the light source transmitting plate 1 can be installed in the air purification equipment through a support and can also be fixed in the air purification equipment through bolts, and the installation mode can be reasonably designed by technicians in the field according to the internal structure of the air purification equipment.
In this embodiment, the light source emitting plate 1 and the light source receiving plate 2 both have a spacing distance greater than zero with the air filtering consumables 3. The light source emitting plate 1 and the light source receiving plate 2 are spaced from the air filtering consumable by a spacing distance larger than zero, so that non-contact installation is realized, and the consumable is convenient to replace.
In the embodiment, a light source emitting plate 1 or a light source receiving plate 2 is arranged between a blower 4 and an air filtering consumable; the air supply outlet of the air feeder is over against the air passing hole of the light source emitting plate 1 or the light source receiving plate 2; the light emitting units 11 are uniformly distributed on the light source emitting plate 1 around the air passing holes; the photosensitive units 21 are uniformly distributed on the light source receiving plate 2 around the air passing holes; the air outlet of the air purification equipment is arranged on two sides of the central position of the air filtering consumable. The light-emitting unit 11 and the photosensitive unit 21 are uniformly distributed, so that the sampling uniformity is better, and the sample set can reflect the transmittance of the air filtering consumable on the whole.
The positive air supply outlet of the air feeder is over against the air passing hole of the light source emitting plate 1 or the light source receiving plate 2, so that air supply is smooth. Due to the action of the air feeder, air sucked into the air purification equipment by the air feeder can become rotary outlet air, so that the pollution of the central area of the air filtering consumable facing the air feeder is less due to less passing air; however, the area around the central area of the air filtration consumables is a critical area for life detection because the air passing through the area is more and more polluted due to the rotary air outlet. Then, the positive air outlet of the blower is opposite to the air passing hole of the light source emitting plate 1 or the light source receiving plate 2, so that the air supply is smooth, and the light emitting unit 11 and the photosensitive unit 21 surround the air passing hole, so that the transmission light of the key area on the air filtering consumables can be detected.
In this embodiment, the air outlet 5 of the air purification apparatus is disposed on two sides of the central position of the air filtering consumable. Therefore, the rotary air outlet device is suitable for rotary air outlet caused by the air feeder, and the air quantity of the air outlet is ensured.
Claims (7)
1. A forced consumable management system is characterized in that: the consumable state switching device comprises a consumable life detection system for judging whether a consumable needs to be replaced, a consumable installation state detection module for judging whether the consumable is installed or replaced, and an equipment state switching module for switching the equipment state according to the consumable installation/replacement state or the consumable life state; the system also comprises a consumable management program configured in the controller of the equipment, wherein the consumable management program is used for controlling the equipment state switching module to switch the equipment state according to the judgment results of the consumable life detection system and the consumable installation/replacement state detection module: when the consumable is installed or replaced within the service life, the equipment is maintained or switched to a usable state; when the consumable exceeding the service life is installed or replaced or the consumable is not installed, the equipment is maintained or switched to a forbidden state;
the consumable life detection system is used for being configured in air purification equipment and comprises a main controller and a light transmittance acquisition device; a service life detection program for judging the service life of the air filtering consumables according to the light transmittance is configured in the main controller; the light transmittance acquisition device comprises a microcontroller, a light source emitting plate and a light source receiving plate, wherein the light source emitting plate is used for being arranged on one side of an air inlet surface or an air outlet surface of the air filtration consumable; the center of the light source transmitting plate and the center of the light source receiving plate are both provided with air passing holes; the light source emitting plate is also provided with a light emitting unit, and the light source receiving plate is provided with a photosensitive unit capable of converting an optical signal into an electric signal corresponding to the position of the light emitting unit, so that the photosensitive unit can receive the transmitted light of the light emitting unit through the air filtering consumable; the photosensitive unit on the light source receiving plate is connected with the signal input end of the microcontroller so as to output an electric signal converted by the photosensitive unit to the microcontroller; a light transmittance calculation program for calculating light transmittance according to the electric signal sent by the photosensitive unit is configured in the microcontroller; the signal output end of the microcontroller is connected with the signal input end of the main controller so as to send light transmittance to the main controller;
the light source emitting plate and the light source receiving plate are all frame-type plates, namely a plurality of strip-shaped plates are formed by surrounding the strip-shaped plates in an end-to-end manner, the air passing hole is a window formed by surrounding the strip-shaped plates, and the photosensitive unit or the passing unit is arranged on the strip-shaped plates; the light source emitting plate and the light source receiving plate are both spaced from the air filtering consumable by a spacing distance larger than zero;
the light source emitting plate is provided with n light emitting units, and the light source receiving plate is provided with a photosensitive unit corresponding to each light emitting unit one by one;
the light transmittance calculation program was executed as follows:
step 101: receiving each current electric signal value sent by each photosensitive unit;
step 102: the current transmittance was calculated as follows:
in the formula (I), the compound is shown in the specification,ia current electrical signal value representing the i-th photosensitive unit, i ═ 1, 2.γ represents the current transmittance.
2. A forced consumable management system according to claim 1, characterized in that: the consumable management program is executed according to the following steps:
step A1: the equipment is initialized to a disabled state;
step A2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step A3; if yes, go to step A4:
step A3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step A4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step a 5;
step A5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step A4; if yes, go to step A6;
step A6: the device state switching module switches the device to the disabled state and proceeds to step a 7;
step A7: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step A5; if not, go to step A8;
step A8: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
3. A forced consumable management system according to claim 1, characterized in that: and a countdown program is also configured in the consumable installation state detection module and used for counting down when the consumable needs to be replaced and judging whether a consumable replacement event occurs before the countdown is finished.
4. A forced consumable management system according to claim 3, characterized in that: the consumable management program is executed according to the following steps:
step B1: the equipment is initialized to a disabled state;
step B2: the consumable installation state detection module judges whether the equipment is provided with consumables or not; if not, go to step B3; if yes, go to step B4:
step B3: the device state switching module maintains the device in a disabled state, thereby preventing the device from being used when no consumable is installed;
step B4: the equipment state switching module maintains or switches the equipment into an available state, if the previous state is the available state, the equipment is maintained into the available state, and if the previous state is the forbidden state, the equipment is switched into the available state; after this step is executed, the process proceeds to step B5;
step B5: the consumable life detection module detects whether consumables need to be replaced; if not, go back to step B4; if yes, go to step B6;
step B6: the mounting state detection module counts down when consumable items need to be replaced and judges whether a consumable item replacement event occurs before the counting down is finished; if yes, go back to step B5; if not, go to step B7;
step B7: the device state switching module switches the device to the disabled state and proceeds to step B8;
step B8: the consumable mounting state detection module detects whether an event of replacing the consumable occurs; if yes, go back to step B5: if not, go to step B9;
step B9: the equipment state switching module maintains the equipment in a disabled state, so that the consumable is prevented from being continuously used after the service life of the consumable is ended.
5. A forced consumable management system according to claim 1, characterized in that: the life detection program is executed according to the following steps:
step 201: receiving the current light transmittance gamma;
step 202: the current light transmission gamma and the life warning threshold eta are compared1Comparing, the life warning threshold eta1The light transmittance is corresponding to the condition that the air filtering consumables reach more than 50% of rated dust holding capacity; if gamma > eta1If yes, go back to step 201; if gamma is less than or equal to eta1Step 203 is entered;
step 203: comparing the current transmission gamma with an end-of-life threshold eta0Making a comparison, the end-of-life threshold η0The light transmittance is that when the air filtering consumables reach the rated dust holding capacity; if gamma > eta0Then send out early warning information to prompt the air filtration consumables to beWill fail; if gamma is less than or equal to eta0If so, the air filtering consumables reach the service life limit, and alarm information is sent out to prompt the user to replace the air filtering consumables.
6. A forced consumable management system according to claim 1, characterized in that: the light source emitting plate and the light source receiving plate are both made of printed circuit boards; the printed board is provided with a power supply management module for connecting a power supply and is printed with a power supply circuit, and the power supply management module supplies power to the light-emitting unit or the photosensitive unit through the power supply circuit; the light-emitting unit is an LED lamp; the photosensitive unit is a photodiode, a phototriode or a photoresistor; and the microcontroller receives the electric signals sent by the n light-emitting units simultaneously through the parallel interface.
7. An air purification device, characterized in that: a forced consumable management system as claimed in any one of claims 1 to 6 is provided.
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