CN215180528U - Dust collector and filter screen separation and water tank full water detection circuit thereof - Google Patents
Dust collector and filter screen separation and water tank full water detection circuit thereof Download PDFInfo
- Publication number
- CN215180528U CN215180528U CN202023137293.8U CN202023137293U CN215180528U CN 215180528 U CN215180528 U CN 215180528U CN 202023137293 U CN202023137293 U CN 202023137293U CN 215180528 U CN215180528 U CN 215180528U
- Authority
- CN
- China
- Prior art keywords
- resistor
- water tank
- voltage
- electrode
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model provides a dust collector and a filter screen separation and water tank full water detection circuit thereof, wherein the detection circuit comprises a controller, a first voltage stabilization module, a second voltage stabilization module, a first current limiting resistor, a second current limiting resistor, an operational amplifier, a first electrode and a second electrode; the first electrode and the second electrode penetrate through a filter screen on the water tank to reach a water full line of the water tank, the first current-limiting resistor is positioned in the water tank, and the controller determines the installation state of the filter screen and the position state of water in the water tank according to a voltage value output by the operational amplifier. The utility model discloses by the controller to detection circuitry provide the power with, according to the filter screen installation not in place, the filter screen installation targets in place and the water tank is full of water, the filter screen installation targets in place and the resistance that the water tank is not full of three kinds of states and corresponds is different, convert different magnitude of voltage into, three kinds of states are judged through the difference of gathering voltage to the simultaneous control ware, realized the filter screen separation to the dust catcher and the detection that the water tank is full of water, circuit structure is simple, avoid adopting special check out test set to lead to the problem with high costs.
Description
Technical Field
The utility model relates to a dust catcher detects technical field, in particular to dust catcher and filter screen separation and full water detection circuitry of water tank thereof.
Background
In the prior art, whether a filter screen is installed in place in a dust collector is often required to be detected, and if the dust collector is a higher-level dust collector with a water absorption function, the sewage tank is also subjected to full water detection. When the filter screen in the dust collector is not installed in place or the sewage tank is full of water, a warning is given out to stop the dust collector. Due to the fact that market price competition is large, cost is increased when a professional sensor is used for detection, and a stable detection circuit needs to be built by using low-price components.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dust catcher and filter screen separation and water tank are full of water detection circuitry thereof to when the filter screen in the dust catcher does not install and targets in place or the sewage tank water is full among the solution prior art, need adopt dedicated check out test set to detect and lead to the higher problem of cost.
The embodiment of the utility model provides a filter screen separation and full water detection circuitry of water tank of dust catcher in the first aspect, detection circuitry includes controller, first voltage stabilizing module, second voltage stabilizing module, first current-limiting resistance, second current-limiting resistance, operational amplifier, first electrode and second electrode;
the first electrode, the second electrode and the first current-limiting resistor are positioned in a water tank, the first electrode and the second electrode are connected through the first current-limiting resistor, the first electrode is connected with the output end of the first voltage-stabilizing module, the input end of the first voltage-stabilizing module is connected with the power output end of a controller, the second electrode is connected with the input end of the second voltage-stabilizing module, the output end of the second voltage-stabilizing module is connected with the non-inverting input end of the operational amplifier, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier and the first end of the second current-limiting resistor, and the second end of the second current-limiting resistor is connected with the detection end of the controller;
and the controller determines the state of the filter screen and the state of the water tank according to the voltage value output by the operational amplifier.
Further, when the controller detects that the voltage value output by the operational amplifier is a first voltage value, the filter screen of the dust collector is normally installed and the water tank is in a state of being not full of water.
Further, when the controller detects that the voltage value output by the operational amplifier is a second voltage value, the filter screen of the dust collector is normally installed and the water tank is in a full water state.
Further, when the controller detects that the voltage value output by the operational amplifier is a third voltage value, the filter screen of the dust collector is judged to be separated.
Further, the first voltage stabilizing module comprises a resistor R79, a resistor R80, a capacitor C42, a voltage regulator TVS4 and a voltage regulator TVS5, a cathode of the voltage regulator TVS4 is connected to a first end of the resistor R79, a first end of the capacitor C42 and a first end of the resistor R80, and constitutes an output end of the first voltage stabilizing module, an anode of the voltage regulator TVS4, a second end of the resistor R79, a second end of the capacitor C42 and an anode of the voltage regulator TVS5 are connected to the ground in common, and a second end of the resistor R80 is connected to a cathode of the voltage regulator TVS5 and constitutes an input end of the first voltage stabilizing module.
Further, the second voltage stabilizing module comprises a resistor R76, a resistor R77, a resistor R78, a voltage regulator TVS2 and a voltage regulator TVS3, a cathode of the voltage regulator TVS3 is connected to a first end of the resistor R78 to form an input end of the second voltage stabilizing module, a second end of the resistor R78 is connected to a first end of the resistor R76 and a first end of the resistor R77, an anode of the voltage regulator TVS3, a second end of the resistor R77 and an anode of the voltage regulator TVS2 are connected to the ground, and a second end of the resistor R76 is connected to a cathode of the voltage regulator TVS2 to form an output end of the second voltage stabilizing module.
Further, the second current-limiting resistor is a resistor R74, the detection circuit further includes a resistor R75 and the capacitor C41, a first end of the resistor R75 is connected to a first end of the capacitor C41 and a second end of the resistor R74, and a second end of the resistor R75 and a second end of the capacitor C41 are connected to ground in common.
A second aspect of the embodiments of the present invention provides a vacuum cleaner, including the above-mentioned detection circuit and water tank.
The utility model provides a dust collector and a filter screen separation and water tank full water detection circuit thereof, wherein the detection circuit comprises a controller, a first voltage stabilization module, a second voltage stabilization module, a first current limiting resistor, a second current limiting resistor, an operational amplifier, a first electrode and a second electrode; the first electrode and the second electrode penetrate through a filter screen on the water tank to reach a water full line of the water tank, the first current-limiting resistor is positioned in the water tank, the first electrode and the second electrode are connected through the first current-limiting resistor, the first electrode is connected with the output end of the first voltage stabilizing module, the input end of the first voltage stabilizing module is connected with the power output end of the controller, the second electrode is connected with the input end of the second voltage stabilizing module, the output end of the second voltage stabilizing module is connected with the non-inverting input end of the operational amplifier, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier and the first end of the second current-limiting resistor, and the second end of the second current-limiting resistor is connected with the detection end of the controller; the controller determines the installation state of the filter screen and the position state of the water in the water tank according to the voltage value output by the operational amplifier. The utility model discloses by the controller to detection circuitry provide the power with, according to the filter screen installation not in place, the filter screen installation targets in place and the water tank is full of water, the filter screen installation targets in place and the resistance that the water tank is not full of three kinds of states and corresponds is different, convert different magnitude of voltage into, three kinds of states are judged through the difference of gathering voltage to the simultaneous control ware, realized the filter screen separation to the dust catcher and the detection that the water tank is full of water, circuit structure is simple, avoid adopting special check out test set to lead to the problem with high costs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a circuit for separating a filter screen and detecting water fullness in a water tank of a vacuum cleaner according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a circuit for detecting the separation of the filter screen and the water full in the water tank of the vacuum cleaner according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
An embodiment of the present invention provides a circuit for detecting a filter screen separation and a water tank fullness of a vacuum cleaner, as shown in fig. 1, the circuit includes a controller 101, a first voltage stabilizing module 102, a second voltage stabilizing module 103, a first current limiting resistor 107, a second current limiting resistor 105, an operational amplifier 104, a first electrode L1 and a second electrode L2;
a first electrode L1 and a second electrode L2 penetrate through a filter screen 109 on a water tank 108 to reach a water full line of the water tank 108, the first electrode L1 and the second electrode L2 are connected through a first current-limiting resistor 107, the first electrode L1 is connected with an output end of a first voltage-stabilizing module 102, an input end of the first voltage-stabilizing module 102 is connected with a power output end of a controller 101, a second electrode L2 is connected with an input end of a second voltage-stabilizing module 103, an output end of the second voltage-stabilizing module 103 is connected with a non-inverting input end of an operational amplifier 104, an inverting input end of the operational amplifier 104 is connected with an output end of the operational amplifier 104 and a first end of a second current-limiting resistor 105, and a second end of the second current-limiting resistor 105 is connected with a detection end of the controller 101;
the controller 101 determines the state of the strainer and the state of the water tank based on the voltage value output from the operational amplifier 104.
Wherein, filter screen 109 sets up on water tank 108, filter screen 109 can set up to a body structure with water tank 108, be equipped with two insulated holes on the filter screen 109, first electrode L1 and second electrode L2 pass the full line position of water in insulated hole up to water tank 108, full line of water is the full scale mark of sign water tank 108 water, when the surface of water in the water tank 108 reaches full state of water, first electrode L1 and second electrode L2 owing to all contact with water and then take place the short circuit, when the surface of water in the water tank 108 does not reach full state of water, first electrode L1 and second electrode L2 are through first current limiting resistor 107 circular telegram.
The filter screen state comprises a filter screen installation normal state and a filter screen separation state, the filter screen installation normal state means that the filter screen is fixed on the water tank, the first electrode L1 and the second electrode L2 can be electrified normally, the filter screen separation state means that the filter screen is separated from the water tank, and the first electrode L1 and the second electrode L2 are in a disconnection state; the water tank state comprises a full water state and a non-full water state, the full water state means that the water level in the water tank reaches a full water line, and the non-full water state means that the water level in the water tank does not reach the full water line.
The first voltage stabilizing module 102 is configured to stabilize a current output by the controller 101 to the second electrode L2, the second voltage stabilizing module 103 is configured to stabilize a current output by the first electrode L1, the operational amplifier 104 connects the inverting input terminal and the output terminal together to output an input voltage at the non-inverting input terminal through a virtual short, and the second current limiting resistor 105 is configured to limit a current output by the operational amplifier 104 and input the current to the controller 101.
When the controller 101 detects that the voltage value output by the operational amplifier 104 is the first voltage value, it determines that the filter 109 of the vacuum cleaner is normally installed and the water tank 108 is in a state of being less than full of water. When the controller 101 detects that the voltage value output by the operational amplifier 104 is the second voltage value, it determines that the filter 109 of the vacuum cleaner is normally installed and the water tank 108 is in a full water state. When the controller 101 detects that the voltage value output from the operational amplifier 104 is the third voltage value, it determines that the filter 109 of the vacuum cleaner is separated. The first voltage value is smaller than the second voltage value, and the third voltage value is close to 0.
The utility model provides a filter screen separation and water tank full water detection circuit of a dust collector, which comprises a controller, a first voltage stabilizing module, a second voltage stabilizing module, a first current limiting resistor, a second current limiting resistor, an operational amplifier, a first electrode and a second electrode; the first electrode and the second electrode penetrate through a filter screen on the water tank to reach a water full line of the water tank, the first current-limiting resistor is positioned in the water tank, the first electrode and the second electrode are connected through the first current-limiting resistor, the first electrode is connected with the output end of the first voltage stabilizing module, the input end of the first voltage stabilizing module is connected with the power output end of the controller, the second electrode is connected with the input end of the second voltage stabilizing module, the output end of the second voltage stabilizing module is connected with the non-inverting input end of the operational amplifier, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier and the first end of the second current-limiting resistor, and the second end of the second current-limiting resistor is connected with the detection end of the controller; the controller determines the installation state of the filter screen and the position state of the water in the water tank according to the voltage value output by the operational amplifier. The utility model discloses by the controller to detection circuitry provide the power with, according to the filter screen installation not in place, the filter screen installation targets in place and the water tank is full of water, the filter screen installation targets in place and the resistance that the water tank is not full of three kinds of states and corresponds is different, convert different magnitude of voltage into, three kinds of states are judged through the difference of gathering voltage to the simultaneous control ware, realized the filter screen separation to the dust catcher and the detection that the water tank is full of water, circuit structure is simple, avoid adopting special check out test set to lead to the problem with high costs.
The present invention is specifically explained below by way of a specific circuit configuration: as shown in fig. 2, the detection circuit includes a first voltage stabilization module 102, a second voltage stabilization module 103, a resistor R81, a resistor R74, an operational amplifier U1A, a first electrode L1, and a second electrode L2; a first electrode L1 and a second electrode L2 penetrate through a filter screen 109 on the water tank 108 to reach a water full line of the water tank 108, the first electrode L1 and the second electrode L2 are connected through a resistor R81, the first electrode L1 is connected with an output end of a first voltage stabilizing module 102, an input end of the first voltage stabilizing module 102 is connected with a 3.3V power supply, the second electrode L2 is connected with an input end of a second voltage stabilizing module 103, an output end of the second voltage stabilizing module 103 is connected with a non-inverting input end of an operational amplifier U1A, an inverting input end of the operational amplifier U1A is connected with an output end of an operational amplifier U1A and a first end of a second current limiting resistor R74, and a second end of the second current limiting resistor R74 is connected with a detection end of the controller 101; the first voltage stabilization module 102 comprises a resistor R79, a resistor R80, a capacitor C42, a regulator TVS4 and a regulator TVS5, wherein a cathode of the regulator TVS4 is connected with a first end of the resistor R79, a first end of the capacitor C42 and a first end of the resistor R80 to form an output end of the first voltage stabilization module 102, an anode of the regulator TVS4, a second end of the resistor R79, a second end of the capacitor C42 and an anode of the regulator TVS5 are connected to the ground in a common manner, and a second end of the resistor R80 is connected with a cathode of the regulator TVS5 to form an input end of the first voltage stabilization module 102. The second voltage stabilizing module 103 comprises a resistor R76, a resistor R77, a resistor R78, a voltage regulator TVS2 and a voltage regulator TVS3, wherein a cathode of the voltage regulator TVS3 is connected with a first end of the resistor R78 to form an input end of the second voltage stabilizing module 103, a second end of the resistor R78 is connected with a first end of the resistor R76 and a first end of the resistor R77, an anode of the voltage regulator TVS3 is connected with a second end of the resistor R77 and an anode of the voltage regulator TVS2, and a second end of the resistor R76 is connected with a cathode of the voltage regulator TVS2 to form an output end of the second voltage stabilizing module 103. The detection circuit further comprises a resistor R75 and a capacitor C41, wherein a first end of the resistor R75 is connected with a first end of the capacitor C41 and a second end of the resistor R74, and a second end of the resistor R75 and a second end of the capacitor C41 are connected to the ground in a shared mode.
The working principle of the embodiment is as follows:
when the filter screen 109 is installed in place and is not full of water, the resistance R81 between the stainless steel inserts of the first electrode L1 and the second electrode L2 is 200K, the operational amplifier U1A makes the voltages of the pins 5 and 6 and the output pin 7 equal by "virtual short", and at this time, the controller determines that the filter screen 109 is installed in place and is not full of water as a normal voltage by acquiring a first voltage V1 from the port AD _ HEPA _ SENSE.
When the filter screen 109 is installed in place and is full of water, the first electrode L1 and the second electrode L2 stainless steel insert are in short circuit, the resistance is in an ohm level, the operational amplifier U1A enables voltages of 5 pins and 6 pins of the operational amplifier and an output 7 pin to be equal through 'virtual short', and at the moment, a second voltage collected by the controller from the AD _ HEPA _ SENSE port is V2, namely the voltage when the filter screen 109 is installed in place and is full of water.
When the filter screen 109 is not installed in place, one or both of the first electrode L1 and the second electrode L2 are disconnected from the circuit, which is equivalent to that the 5-pin of the operational amplifier U1A is open, no voltage flows in, and the voltage V3 collected by the controller from the AD _ HEPA _ SENSE port is the separation voltage of the filter screen 109.
When the circuit operates, the filter screen separation and the water tank full water detection can be realized by collecting the 7-pin voltage range of the operational amplifier U1A.
A second aspect of the embodiments of the present invention provides a vacuum cleaner, including the above-mentioned detection circuit and water tank.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, equivalent substitutions or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to fall within the scope of the invention as defined by the claims as filed.
Claims (8)
1. A filter screen separation and water tank full water detection circuit of a dust collector is characterized in that the detection circuit comprises a controller, a first voltage stabilization module, a second voltage stabilization module, a first current limiting resistor, a second current limiting resistor, an operational amplifier, a first electrode and a second electrode;
the first electrode and the second electrode penetrate through a filter screen on a water tank to reach a water full line of the water tank, the first current-limiting resistor is located in the water tank, the first electrode and the second electrode are connected through the first current-limiting resistor, the first electrode is connected with the output end of the first voltage stabilizing module, the input end of the first voltage stabilizing module is connected with the power output end of a controller, the second electrode is connected with the input end of the second voltage stabilizing module, the output end of the second voltage stabilizing module is connected with the non-inverting input end of the operational amplifier, the inverting input end of the operational amplifier is connected with the output end of the operational amplifier and the first end of the second current-limiting resistor, and the second end of the second current-limiting resistor is connected with the detection end of the controller;
and the controller determines the installation state of the filter screen and the position state of water in the water tank according to the voltage value output by the operational amplifier.
2. The detection circuit of claim 1, wherein the controller determines that the filter of the vacuum cleaner is normally installed and the water tank is in a state of being less than full of water when detecting that the voltage value output by the operational amplifier is a first voltage value.
3. The detection circuit of claim 1, wherein the controller determines that the filter of the vacuum cleaner is normally installed and the water tank is in a full water state when detecting that the voltage value output by the operational amplifier is a second voltage value.
4. The detection circuit of claim 1, wherein the controller determines that the filter of the vacuum cleaner is separated when the controller detects that the voltage value output by the operational amplifier is a third voltage value.
5. The detection circuit as claimed in claim 1, wherein the first voltage regulator module comprises a resistor R79, a resistor R80, a capacitor C42, a regulator TVS4 and a regulator TVS5, a cathode of the regulator TVS4 is connected to a first end of the resistor R79, a first end of the capacitor C42 and a first end of the resistor R80 and constitutes an output terminal of the first voltage regulator module, an anode of the regulator TVS4, a second end of the resistor R79, a second end of the capacitor C42 and an anode of the regulator TVS5 are connected to ground, and a second end of the resistor R80 is connected to a cathode of the regulator TVS5 and constitutes an input terminal of the first voltage regulator module.
6. The detection circuit as claimed in claim 1, wherein the second voltage regulator module comprises a resistor R76, a resistor R77, a resistor R78, a regulator TVS2 and a regulator TVS3, a cathode of the regulator TVS3 is connected to a first end of the resistor R78 and forms an input terminal of the second voltage regulator module, a second end of the resistor R78 is connected to a first end of the resistor R76 and a first end of the resistor R77, an anode of the regulator TVS3, a second end of the resistor R77 and an anode of the regulator TVS2 are connected to ground, and a second end of the resistor R76 is connected to a cathode of the regulator TVS2 and forms an output terminal of the second voltage regulator module.
7. The detection circuit of claim 1, wherein the second current limiting resistor is a resistor R74, the detection circuit further comprising a resistor R75 and a capacitor C41, a first terminal of the resistor R75 being connected to a first terminal of the capacitor C41 and a second terminal of the resistor R74, and a second terminal of the resistor R75 being connected to ground in common with a second terminal of the capacitor C41.
8. A vacuum cleaner comprising a detection circuit as claimed in any one of claims 1 to 7 and a water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023137293.8U CN215180528U (en) | 2020-12-22 | 2020-12-22 | Dust collector and filter screen separation and water tank full water detection circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023137293.8U CN215180528U (en) | 2020-12-22 | 2020-12-22 | Dust collector and filter screen separation and water tank full water detection circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215180528U true CN215180528U (en) | 2021-12-14 |
Family
ID=79379573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023137293.8U Active CN215180528U (en) | 2020-12-22 | 2020-12-22 | Dust collector and filter screen separation and water tank full water detection circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215180528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878198A (en) * | 2022-06-06 | 2022-08-09 | 珠海格力电器股份有限公司 | Fault detection circuit and method and air conditioning equipment |
-
2020
- 2020-12-22 CN CN202023137293.8U patent/CN215180528U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114878198A (en) * | 2022-06-06 | 2022-08-09 | 珠海格力电器股份有限公司 | Fault detection circuit and method and air conditioning equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100486069C (en) | Method and system for detecting DC over current protector | |
| CN102967748A (en) | DC bus voltage detection circuit with high antijamming capability | |
| CN215180528U (en) | Dust collector and filter screen separation and water tank full water detection circuit thereof | |
| CN102692591A (en) | Device and method for detecting insulation failures of high and low voltage ends | |
| CN115015744A (en) | AC charging pile relay adhesion detection circuit | |
| CN212586508U (en) | Switch detection circuit and vehicle | |
| CN103308755A (en) | Insulation testing device and method for high-voltage direct-current remote power supply system | |
| CN113366326A (en) | Relay adhesion detection circuit, method and system | |
| CN207249443U (en) | External switch observation circuit and control device | |
| CN212410835U (en) | Detection circuit of alternating current input line and socket with detection circuit | |
| CN201965176U (en) | Two-stage over-current detection device | |
| CN102269804A (en) | Method and device for detecting switching value detector | |
| CN214041640U (en) | Detection circuit and detection device | |
| CN104748881A (en) | Pt1000 temperature transmitter with wide power supply range | |
| CN210665985U (en) | Insulation inspection module | |
| CN202770946U (en) | Line detection device based on single chip microcomputer with A/D acquisition function | |
| CN114217125A (en) | Intelligent ammeter capable of preventing electricity theft, electricity theft prevention system and electricity theft prevention detection method thereof | |
| CN209486164U (en) | Microcontroller power supply low-voltage detection circuit without A D interface and internal reference voltage | |
| CN220855147U (en) | High-voltage interlocking circuit, device and high-voltage loop detection system | |
| CN207518348U (en) | A kind of emergent broadcast power supply management system | |
| CN106740570B (en) | Control feedback circuit of intelligent drain valve of vehicle gas circuit and fault diagnosis method of drain valve | |
| CN206727632U (en) | Diagnostic signal short-circuit detecting circuit | |
| CN110879323B (en) | Vehicle false alarm prevention insulation detection circuit | |
| CN217305494U (en) | Collision signal detection circuit | |
| CN217469457U (en) | Protection circuit for preventing live wire and zero line from being reversely connected |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |