CN220185331U - Air pump control circuit, air pump equipment and bubble type liquid level gauge - Google Patents
Air pump control circuit, air pump equipment and bubble type liquid level gauge Download PDFInfo
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Abstract
The utility model belongs to the technical field of air pumps, and provides an air pump control circuit, air pump equipment and a bubble type liquid level meter, wherein a manual control circuit generates a manual switch control signal according to key actions, and switches the working state of an air pump according to the manual switch control signal, a pulse absorbing circuit absorbs spike pulses generated when the key actions are executed, an air pump is subjected to voltage sampling according to an air pump detection control signal output by a main control circuit through an air pump detection circuit, a corresponding air pump detection signal is generated, and the working state of the air pump is determined according to the air pump detection signal by the main control circuit, so that the purpose of detecting the working state of the air pump is realized.
Description
Technical Field
The utility model belongs to the technical field of air pumps, and particularly relates to an air pump control circuit, air pump equipment and a bubble type liquid level meter.
Background
The bubble type liquid level meter is a pressure type liquid level meter based on the pressure balance principle, and the main principle is that gas is compressed by an air pump and injected into the measured liquid by a measuring tube. When the pressure of the gas in the measuring tube and the pressure of the measured liquid reach balance, a pressure sensing module in the bubble type liquid level meter collects current pressure data and converts the current pressure data into liquid level height data according to the relation between the pressure and the density.
However, in the existing air pump working circuit, due to lack of monitoring of the air pump working circuit and the air pump air pumping circuit, in the batch production process, failure faults (short circuit/open circuit) and air leakage working conditions of the air pump cannot be intelligently monitored, so that production test cost is increased, and whether the air pump is abnormal or air channel air leakage is abnormal cannot be judged when the acquisition of the project field equipment is abnormal, so that equipment maintenance cost of the project field is increased.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the utility model provides an air pump control circuit, air pump equipment and a bubble type liquid level meter, which can realize the monitoring of an air pump working circuit and an air pump air pumping circuit.
A first aspect of an embodiment of the present utility model provides an air pump control circuit, including:
the manual control circuit is connected with the air pump and used for generating a manual switch control signal according to the key action and switching the working state of the air pump according to the manual switch control signal;
the pulse absorbing circuit is connected with the air pump and used for absorbing spike pulses generated when the key action is executed;
the air pump detection circuit is connected with the air pump, and is used for receiving an air pump detection control signal, sampling the voltage of the air pump according to the air pump detection control signal and generating a corresponding air pump detection signal;
the main control circuit is connected with the air pump detection circuit and is used for outputting an air pump detection control signal and receiving the air pump detection signal, and determining the working state of the air pump according to the air pump signal.
In one embodiment, the air pump control circuit further comprises:
the manual inflation detection circuit is connected with the control end of the manual control circuit and is used for generating a manual inflation detection signal according to the voltage of the control end of the manual control circuit;
the main control circuit is also connected with the manual inflation detection circuit, and the main control circuit is also used for determining the working state and the control type of the air pump according to the manual inflation detection signal.
In one embodiment, the air pump control circuit further comprises:
and the timing inflation control circuit is connected with the air pump and is used for receiving the timing inflation control signal provided by the main control circuit and controlling the working state of the air pump according to the timing inflation control signal.
In one embodiment, the manual control circuit includes:
the key module is connected with a power supply and used for generating the manual switch control signal according to the key action;
and the manual switch module is connected with the key module and the air pump and is used for receiving the manual switch control signal and switching according to the manual switch control signal so as to switch the working state of the air pump.
In one embodiment, the key module includes: the first resistor, the first key, the first capacitor, the second resistor and the first diode;
the first end of the first resistor is connected with the first power supply end, the second end of the first resistor is connected with the first end of the first key, the second end of the first key, the first end of the first capacitor, the first end of the second resistor and the cathode of the first diode are commonly connected with the manual switch module, and the second end of the first capacitor, the second end of the second resistor and the anode of the first diode are commonly grounded.
In one embodiment, the manual switch module includes: the first switch tube, the second capacitor and the third resistor;
the first end of the first switch tube and the first end of the second capacitor are connected to the negative electrode of the air pump, the second end of the second capacitor is connected to the first end of the third resistor, and the second end of the first switch tube and the second end of the third resistor are grounded.
In one embodiment, the air pump detection circuit includes: the fourth resistor, the fifth resistor, the sixth resistor, the third capacitor, the first analog switch and the second diode;
the first end of the sixth resistor is connected with the negative electrode of the air pump, the second end of the sixth resistor is connected with the first end of the first analog switch, the second end of the first analog switch, the first end of the fourth resistor and the negative electrode of the second diode are commonly connected with the air pump detection signal end of the main control circuit, the second end of the fourth resistor and the positive electrode of the second diode are commonly grounded, the third end of the first analog switch and the first end of the third capacitor are commonly connected with the second power supply end, the second end of the third capacitor is grounded, the fourth end of the first analog switch is connected with the first end of the fifth resistor, and the second end of the fifth resistor is connected with the air pump detection control end of the main control circuit.
The second aspect of the embodiment of the present utility model also provides an air pump apparatus, including:
an equipment air inlet;
the air inlet of the air pump is connected with the equipment air inlet;
the air pump control circuit according to any one of the above claims, wherein the air pump control circuit is used for controlling and detecting the working state of the air pump;
the first end of the first three-way pipe is connected with the air outlet of the air pump;
the first end of the first electromagnetic valve is connected with the second end of the first three-way pipe;
the first pressure acquisition module is connected with the second end of the first electromagnetic valve and is positioned in a first air path and used for detecting the air pressure of the first air path to generate a first air pressure detection signal;
the first end of the second electromagnetic valve is connected with the third end of the first three-way pipe;
the first end of the second three-way pipe is connected with the second end of the second electromagnetic valve;
the second pressure acquisition module is connected with the second end of the second three-way pipe and positioned in a second air path and is used for detecting the air pressure of the second air path to generate a second air pressure detection signal;
the first end of the third electromagnetic valve is connected with the third end of the second three-way pipe;
the equipment air outlet is connected with the second end of the third electromagnetic valve;
the main control board is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first pressure acquisition module, the second pressure acquisition module and the air pump control circuit, and is used for driving the air pump control circuit to work and detecting whether the air pump equipment leaks air according to the first air pressure detection signal and the second air pressure detection signal.
In one embodiment, the air pump apparatus further comprises:
and the display module is connected with the main control circuit and used for displaying the first air pressure detection signal, the second air pressure detection signal and the air leakage detection result.
A third aspect of the embodiment of the present utility model also provides a bubble type liquid level gauge, including: an air pump control circuit as claimed in any one of the preceding claims or an air pump apparatus as claimed in any one of the preceding claims.
The embodiment of the utility model has the beneficial effects that: the utility model provides an air pump control circuit, air pump equipment and bubble type liquid level meter, manual switch control signal is generated according to the button action by manual control circuit to switch the operating condition of air pump according to manual switch control signal, the spike pulse that produces when the pulse absorbing circuit absorbed and carried out the button action, carry out voltage sampling and generate corresponding air pump detection signal to the air pump through the air pump detection circuit according to the air pump detection control signal that main control circuit output, and confirm by main control circuit according to the air pump detection signal the operating condition of air pump realizes the purpose of detecting the operating condition of air pump.
Drawings
FIG. 1 is a schematic diagram I of an air pump control circuit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram II of an air pump control circuit according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram III of an air pump control circuit according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of an air pump control circuit according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of an air pump control circuit according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of a manual pump up detection circuit according to an embodiment of the present utility model;
fig. 7 is a schematic view of an air pump apparatus provided in an embodiment of the present utility model.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model 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 for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is one or more than one unless specifically defined otherwise.
In the existing air pump equipment, the defect that a safe and effective monitoring means does not exist for an air pump working circuit and an air pump air pumping circuit exists, the problem that the cost of production test is high because automatic intelligent monitoring cannot be carried out on an air pump failure fault (short circuit or open circuit) and an air leakage working condition in the batch production process exists, and in addition, whether the air pump is abnormal or air channel air leakage is abnormal cannot be intelligently judged when the project field equipment is abnormal, so that the equipment maintenance cost of the project field is increased.
In order to solve the above technical problems, an embodiment of the present utility model provides an air pump control circuit, as shown in fig. 1, the air pump control circuit in this embodiment includes: a manual control circuit 300, a pulse absorbing circuit 200, an air pump detection circuit 400, and a main control circuit 500.
The manual control circuit 300 and the air pump detection circuit 400 are respectively connected with the air pump 100, the pulse absorbing circuit 200 is connected with the air pump 100, the manual control circuit 300 is used for generating a manual switch control signal according to the key action and switching the working state of the air pump 100 according to the manual switch control signal, the pulse absorbing circuit 200 is used for absorbing spike pulses generated when the key action is executed, the air pump detection circuit 400 is used for receiving the air pump detection control signal, voltage sampling is carried out on the air pump 100 according to the air pump detection control signal and generating a corresponding air pump detection signal, the main control circuit 500 is connected with the air pump detection circuit 400, and the main control circuit 500 is used for outputting the air pump detection control signal and receiving the air pump detection signal and determining the working state of the air pump 100 according to the air pump 100 signal.
In this embodiment, since the manual control circuit 300 generates voltage spike during the switching process when receiving the key action, in order to avoid damaging other devices or chips by the voltage spike, the pulse absorbing circuit 200 absorbs the spike generated during the key action, the manual control circuit 300 generates a manual switch control signal according to the key action, switches the working state of the air pump 100 according to the manual switch control signal, samples the voltage of the air pump 100 according to the air pump detection control signal output by the air pump detection circuit 400 according to the main control circuit 500, generates a corresponding air pump detection signal, and determines the working state of the air pump 100 according to the air pump detection signal by the main control circuit 500, so as to achieve the purpose of detecting the working state of the air pump 100.
In one embodiment, referring to fig. 2, the air pump control circuit further includes a manual air pump detection circuit 600, the manual air pump detection circuit 600 is connected to the control terminal of the manual control circuit 300, the manual air pump detection circuit 600 is configured to generate a manual air pump detection signal according to the voltage of the control terminal of the manual control circuit 300, the main control circuit 500 is further connected to the manual air pump detection circuit 600, and the main control circuit 500 is further configured to determine the operation state and the control type of the air pump 100 according to the manual air pump detection signal.
In one embodiment, referring to fig. 3, the air pump control circuit further includes a timing air pump control circuit 700, the timing air pump control circuit 700 is connected to the air pump 100, and the timing air pump control circuit 700 is configured to receive a timing air pump control signal provided by the main control circuit 500, and control the working state of the air pump 100 according to the timing air pump control signal.
In one embodiment, referring to fig. 4, the manual control circuit 300 includes a key module 310 and a manual switch module 320, the key module 310 is connected to a power supply, and the manual switch module 320 is connected to the key module 310 and the air pump 100. The key module 310 is configured to generate a manual switch control signal according to a key operation, and the manual switch module 320 is configured to receive the manual switch control signal and switch according to the manual switch control signal, so as to switch the working state of the air pump 100.
In one embodiment, referring to fig. 5, the pulse absorbing circuit 200 includes a ninth resistor R9, a sixth capacitor C6, and a third diode D3, wherein a first end of the ninth resistor R9 and a first end of the sixth capacitor C6 are commonly connected to the positive electrode of the air pump 100, a second end of the ninth resistor R9 and a second end of the sixth capacitor C6 are commonly connected to the negative electrode of the third diode D3, and an anode of the third diode D3 is connected to the negative electrode of the air pump 100.
In this embodiment, the air pump 100 has a voltage spike at the moment of switching, which may damage other devices and chips, and the pulse absorbing circuit 200 is formed by the ninth resistor R9, the sixth capacitor C6 and the second diode D2, so that the voltage pulse at the moment of switching the air pump 100 can be reduced to be at a safe voltage level.
In one embodiment, referring to FIG. 5, key module 310 includes: the first resistor R1, the first key SW1, the first capacitor C1, the second resistor R2 and the first diode D1 are connected, the first end of the first resistor R1 is connected with the first power supply end VCC1, the second end of the first resistor R1 is connected with the first end of the first key SW1, the second end of the first key SW1, the first end of the first capacitor C1, the first end of the second resistor R2 and the cathode of the first diode D1 are commonly connected with the manual switch module 320, and the second end of the first capacitor C1, the second end of the second resistor R2 and the anode of the first diode D1 are commonly grounded.
In this embodiment, the first button SW1 may be turned on or off according to a button action, where the first resistor R1 may be used as a current limiting resistor to process a current generated when the first button SW1 is turned on, the first capacitor C1, the second resistor R2 and the first diode D1 may be used to suppress a switching pulse in the manual switching module 320, when the first button SW1 is manually pressed, the voltage at the control end of the manual switching module 320 is made to be at a safe high voltage by dividing the voltage by the first resistor R1 and the second resistor R2, so that the manual switching module 320 is turned on, at this time, the first loop (the first power supply end VCC1, the air pump 100, the manual control circuit 300, and the ground) of the air pump 100 is turned on, the air pump 100 starts to perform an inflation operation, when the first button SW1 is not pressed, the voltage at the control end of the manual switching module 320 is at a low level, at this time, the first loop (the first end VCC1, the air pump 100, the manual control circuit 300, and the ground) of the air pump 100 is turned off, and the air pump 100 is not turned off.
In one embodiment, the first diode D1 may be a voltage regulator, and the first diode D1 may be used to suppress the pulse voltage.
In one embodiment, referring to fig. 5, the manual switch module 320 includes: the first switch tube Q1, the second capacitor C2 and the third resistor R3; the first end of the first switching tube Q1 and the first end of the second capacitor C2 are commonly connected to the negative electrode of the air pump 100, the second end of the second capacitor C2 is connected to the first end of the third resistor R3, and the second end of the first switching tube Q1 and the second end of the third resistor R3 are commonly grounded.
In this embodiment, the second capacitor C2 and the third resistor R3 can inhibit the switching pulse of the first switching tube Q1, when the first key SW1 is manually pressed, the voltage of the control end of the manual switching module 320 is at a safe high voltage through the voltage division of the first resistor R1 and the second resistor R2, so that the first switching tube Q1 is turned on, at this time, the first loop (the first power supply end VCC1, the air pump 100, the manual control circuit 300 and the ground) of the air pump 100 is turned on, the air pump 100 starts the air pumping operation, and when the first key SW1 is not pressed, the voltage of the control end of the first switching tube Q1 is at a low level, the first switching tube Q1 is turned off, at this time, the first loop (the first power supply end VCC1, the air pump 100, the manual control circuit 300 and the ground) of the air pump 100 is turned off.
In one embodiment, referring to fig. 5, the air pump detection circuit 400 includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a third capacitor C3, a first analog switch U1, and a second diode D2; the first end of the sixth resistor R6 is connected to the negative pole of the air pump 100, the second end of the sixth resistor R6 is connected to the first end of the first analog switch U1, the second end of the first analog switch U1, the first end of the fourth resistor R4 and the negative pole of the second diode D2 are commonly connected to the air pump detection signal end TSET1 of the master control circuit 500, the second end of the fourth resistor R4 and the positive pole of the second diode D2 are commonly connected to the ground, the third end of the first analog switch U1 and the first end of the third capacitor C3 are commonly connected to the second power supply end, the second end of the third capacitor C3 is grounded, the fourth end of the first analog switch U1 is connected to the first end of the fifth resistor R5, and the second end of the fifth resistor R5 is connected to the air pump detection control end K4 of the master control circuit 500.
In this embodiment, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the third capacitor C3, the first analog switch U1 and the second diode D2 form a detection circuit, so as to detect three states of open circuit, short circuit and normal operation of the air pump 100. The first analog switch U1 may be a single-path analog switch, and the second diode D2 may be used as a voltage regulator to inhibit pulse voltage, so as to avoid the excessive voltage of the air pump detection signal end TSET1 of the main control circuit 500 and damage chips and devices in the main control circuit 500.
When the working condition of the air pump 100 needs to be detected, the air pump detection control end K4 of the main control circuit 500 is at a high level, and at this time, the first end and the second end of the first analog switch U1 are turned on, and the voltage of the air pump detection signal end TSET1 of the main control circuit 500 is ut=vcc 1×r8/(rs+r6+r4); when the air pump 100 is turned off, ut=0v; when the air pump 100 is short-circuited, ut=vcc 1×r4/(r6+r4); when the air pump 100 is normal, ut=vcc 1×r4/(rs+r6+r4); rs is the resistance of the air pump 100, VCC1 is the voltage of the first power supply terminal VCC1, and the master control circuit 500 can determine the working state of the air pump 100 according to the voltage of the air pump detection signal terminal TSET 1.
In one embodiment, referring to fig. 5, the timing inflation control circuit 700 includes: the first end of the fifth capacitor C5 and the first end of the second switch tube Q2 are connected with the negative electrode of the air pump 100, the second end of the fifth capacitor C5 is connected with the first end of the eighth resistor R8, the second end of the second switch tube Q2, the first end of the seventh resistor R7 and the first end of the fourth capacitor C4 are commonly grounded, and the control end of the second switch tube Q2, the second end of the seventh resistor R7 and the second end of the fourth capacitor C4 are commonly connected with the timing inflation control end K3 of the master control circuit 500.
In this embodiment, the main control circuit 500 may output a timing pumping control signal according to a set timing interval time, and output the timing pumping control signal to the control end of the second switching tube Q2 by the timing pumping control end K3, where the fifth capacitor C5, the eighth resistor R8, the seventh resistor R7, and the fourth capacitor C4 may be used to suppress the switching pulse of the second switching tube Q2, the second switching tube Q2 is turned on by setting the timing pumping control end K3 to a high level, at this time, the second loop (the first power supply end VCC1, the air pump 100, the second switching tube Q2, and the ground) of the air pump 100 is turned on, and when the set timing interval time is not reached, the timing pumping control end K3 of the main control circuit 500 is set to a low level, the second switching tube Q2 is turned off, the second loop of the air pump 100 is turned off, and the air pump 100 is not operated.
In one embodiment, referring to fig. 6, a manual inflation detection circuit 600 includes: the tenth resistor R10, the eleventh resistor R11 and the third switching tube Q3, the first end of the tenth resistor R10 is connected with the third power supply end, the second end of the tenth resistor R10 and the first end of the eleventh resistor R11 are commonly connected with the first end of the third switching tube Q3, the second end of the third switching tube Q3 is grounded, the control end of the third switching tube Q3 is connected with the control end of the first switching tube Q1, and the second end of the eleventh resistor R11 is connected with the manual inflation detection end TSET2 of the main control circuit 500.
In this embodiment, the manual pumping detection end TSET2 of the main control circuit 500 is configured to receive a manual pumping detection signal, the control end of the third switch tube Q3 is connected to the control end of the first switch tube Q1 through the sampling point K1, and is configured to sample the voltage of the control end of the first switch tube Q1, and the third switch tube Q3 is turned on or off according to the voltage of the sampling point K1, so as to generate a corresponding manual pumping detection signal and output the corresponding manual pumping detection signal to the main control circuit 500, and the main control circuit 500 determines the working state and the control type of the air pump 100 according to the manual pumping detection signal, so that the manual pumping detection circuit 600 can determine whether the pumping is manual pumping or timed pumping each time, which is helpful for analyzing abnormal field data and reducing the maintenance cost on site.
In one specific application embodiment, the master circuit 500 may be a master chip.
In a specific application embodiment, the control end of the first switch tube Q1 is used as a sampling point K1, the tenth resistor R10, the eleventh resistor R11 and the third switch tube Q3 perform voltage sampling on the sampling point K1 to implement manual pumping detection, when the first key SW1 is pressed, the sampling point K1 is at a high level, the third switch tube Q3 is turned on, a manual pumping detection signal is at a low level, the manual pumping detection signal of the low level is output to a manual pumping detection end TSET2 (for example, an interrupt pin of the main control chip) of the main control circuit 500, when the main control circuit 500 detects that the manual pumping detection end TSET2 is at a low level, the pumping is determined to be manual pumping, and the control type of the air pump 100 is manual control. When the first key SW1 is not pressed, the sampling point K1 is at a low level, the third switching tube Q3 is turned off, and the manual pumping detection signal is at a high level, and when the master control circuit 500 detects that the manual pumping detection terminal TSET2 is at a high level, it is determined that the manual pumping is not triggered.
In this embodiment, by detecting the working state of the air pump 100, the control type during each inflation and the detection of the working state of the air pump 100, such as the judgment of whether the air pump 100 is inflated manually or regularly, and the detection of the air pump 100 in the three states of open circuit, short circuit and normal operation, are determined, which are helpful for the analysis of field abnormal data and reduce the maintenance cost on the site.
The embodiment of the utility model also provides an air pump device, referring to fig. 7, the air pump device comprises: the device air inlet 801, the air pump 100, the air pump control circuit 812 of any of the above embodiments, the first tee 821, the first solenoid valve 831, the first pressure acquisition module 841, the second solenoid valve 832, the second tee 822, the second pressure acquisition module 842, the third solenoid valve 833, the device air outlet 802, and the main control board 810.
In this embodiment, the air inlet of the air pump 100 is connected to the air inlet 801 of the device, the air pump control circuit is used for controlling and detecting the working state of the air pump 100, the first end of the first three-way pipe 821 is connected to the air outlet of the air pump 100, the first end of the first electromagnetic valve 831 is connected to the second end of the first three-way pipe 821, the first pressure acquisition module 841 is located in the first air path, the first pressure acquisition module 841 is used for detecting the air pressure of the first air path to generate a first air pressure detection signal, the first end of the second electromagnetic valve 832 is connected to the third end of the first three-way pipe 821, the first end of the second three-way pipe 822 is connected to the second end of the second electromagnetic valve 832, the second pressure acquisition module 842 is connected to the second end of the second three-way pipe 822, the second pressure acquisition module 842 is located in the second air path, the second pressure acquisition module 842 is used for detecting the air pressure of the second air path to generate a second air pressure detection signal, the first end of the third electromagnetic valve 833 is connected to the first end of the third electromagnetic valve 822, the air outlet 802 is connected to the second end of the third electromagnetic valve 833, and the master control board 810, the second electromagnetic valve and the air pump control circuit is connected to the first electromagnetic valve 810 and the air pump control circuit to detect the air pressure detection signal according to the first air pressure detection signal, the first electromagnetic valve 831 and the air leakage control circuit 832.
In one embodiment, the air pump device further includes a power management module, the power management module may provide power to the air pump control circuit, under the condition that the air pump device is powered on, the main control board 810 may control the air pump control circuit to drive the power management module to supply power to the air pump 100 by the air pump control circuit, the air pump 100 starts to pump air, meanwhile, the main control board 810 controls to open the first electromagnetic valve 831, close the second electromagnetic valve 832 and close the third electromagnetic valve 833, the air pump 100 pumps air to the first pressure collection module 841 through the first electromagnetic valve 831, at this time, the first pressure collection module 841 collects an air pressure value P1, and the air pressure value P1 is compared with a preset air pressure range, for example, the air pressure value S1 and the air pressure value S2 form the preset air pressure range, if S1< P1< S2, then the first air path (the air outlet of the air pump 100, the first electromagnetic valve 831, the first pressure collection module 841) of the air pump 100 is not air-leaking, if P1> S2 or P1< S1 is abnormal, and air leakage is possible.
If P1 is detected as normal, that is, S1< P1< S2, the main control board 810 controls to close the first electromagnetic valve 831, open the second electromagnetic valve 832, and close the third electromagnetic valve 833, at this time, the air pump 100 pumps air to the second pressure acquisition module 842 through the second electromagnetic valve 832, at this time, the second pressure acquisition module 842 acquires an air pressure value P2 within a fixed range, if S1< P2< S2, the second air path (the air outlet of the air pump 100, the second electromagnetic valve 832, the second pressure acquisition module 842) of the air pump 100 is not leaked, and if P2> S2 or P2< S1, the second air path of the air pump 100 is abnormal, possibly leaked.
In one embodiment, P1 is equal to P2, and the difference between P1 and P2 should be less than a predetermined threshold, possibly due to minor inconsistencies in the pressure acquisition module errors.
In one embodiment, if P2 is detected as normal, that is, S1< P2< S2, then the main control board 810 controls to close the first solenoid valve 831, open the second solenoid valve 832, and open the third solenoid valve 833, at this time, the air pump 100 pumps air to the second pressure acquisition module 842 and the device air outlet 802 through the second solenoid valve 832 via the second tee 822, respectively, and the device air outlet 802 is placed into the liquid to be tested through the air pipe connection air chamber. When the pressure of the gas in the gas pipe and the measured liquid reach balance, a second pressure acquisition module 842 in the bubble type liquid level meter acquires current pressure data and converts the current pressure data into liquid level height data according to the relationship between the pressure and the density.
In a specific application embodiment, after the air pump device is powered on, the working condition of the device is detected first, whether the working state of the air pump 100 is normal is detected, if not, the main control board 810 outputs a device abnormality signal, and the abnormality result of the air pump 100 of the device is printed, so as to control the air pump 100 to stop working.
If the working state of the air pump 100 is normal, the working parameters of the air pump 100 are set, the air pump 100 is controlled to start to enter the normal working state, the main control circuit 500 can output a timing inflation control signal according to the set timing interval time, the timing inflation control end K3 outputs the timing inflation control signal to the control end of the second switch tube Q2, the second switch tube Q2 is conducted through the timing inflation control end K3 set to be at a high level, at the moment, the second loop (the first power supply end VCC1, the air pump 100, the second switch tube Q2 and the ground) of the air pump 100 is conducted, the air pump 100 starts to perform timing inflation, and receives a first air pressure detection signal and a second air pressure detection signal output by the first pressure sensor and the second pressure sensor, the water level value is determined based on the first air pressure detection signal and the second air pressure detection signal, the voltage of the air pressure detection signal corresponds to the water level value, and the water level value is reported to the upper computer, and the upper computer can be a data acquisition platform.
In one embodiment, the master control circuit 500 may be integrated on the master control board 810, and the master control board 810 periodically detects the operating state of the device once a day according to the set timing detection time.
In one embodiment, the main control board 810 enters a sleep state after the acquisition of data is completed.
In one embodiment, referring to fig. 7, the air pump apparatus further includes a display module 815, where the display module 815 is connected to the main control circuit 500, and the display module 815 is configured to display the first air pressure detection signal, the second air pressure detection signal, and the air leakage detection result.
In one embodiment, referring to fig. 7, the air pump apparatus further includes a wireless communication module 813, and the wireless communication module 813 is connected to the main control circuit 500, for providing a communication link between the main control circuit 500 and the host computer.
In one embodiment, referring to fig. 7, the air pump apparatus further includes a display operation module 814 and a film key module 816, where the display operation module 814 is configured to receive the detection data output by the main control circuit 500, convert the detection data into display data, display the display data by the display module 815, and the film key module 816 is configured to provide a man-machine interaction tool, receive a key operation of a user, and convert the display operation module 814 into a corresponding key signal to output to the main control circuit 500.
In one embodiment, referring to fig. 7, the air pump apparatus further includes a waterproof and air-permeable plug 803, and the waterproof and air-permeable plug 803 is used to seal the housing of the air pump apparatus to prevent water from entering the air pump apparatus.
The air pump equipment can effectively monitor the working condition of the air pump, reduce the production and test cost of the air pump equipment in the mass production process, and reduce the maintenance cost of the equipment on the project site.
The embodiment of the utility model also provides a bubble type liquid level meter, which comprises: the air pump control circuit according to any one of the embodiments described above.
In this embodiment, set up air pump control circuit, air pump, trachea and pressure sensor in the bubble type level gauge, air pump control circuit is used for controlling the operating condition of air pump to monitor the work of air pump, when air pump control circuit control air pump was inflated, air pump output gas was to the trachea, then detects the atmospheric pressure in the trachea by pressure sensor, then obtains liquid level height data according to pressure data that pressure sensor gathered, realizes the measurement to the liquid level.
In one embodiment, the bubble level gauge comprises an air pump device as described in any of the embodiments above.
In the embodiment, the production and test cost of the bubble type liquid level meter in the batch production process can be reduced and the analysis and maintenance cost of the bubble type liquid level meter in a project site can be reduced through monitoring the working circuit of the air pump and the air inflation circuit.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present utility model. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (10)
1. An air pump control circuit, is connected with the air pump, its characterized in that, air pump control circuit includes:
the manual control circuit is connected with the air pump and used for generating a manual switch control signal according to the key action and switching the working state of the air pump according to the manual switch control signal;
the pulse absorbing circuit is connected with the air pump and used for absorbing spike pulses generated when the key action is executed;
the air pump detection circuit is connected with the air pump, and is used for receiving an air pump detection control signal, sampling the voltage of the air pump according to the air pump detection control signal and generating a corresponding air pump detection signal;
the main control circuit is connected with the air pump detection circuit and is used for outputting an air pump detection control signal and receiving the air pump detection signal, and determining the working state of the air pump according to the air pump signal.
2. The air pump control circuit of claim 1, further comprising:
the manual inflation detection circuit is connected with the control end of the manual control circuit and is used for generating a manual inflation detection signal according to the voltage of the control end of the manual control circuit;
the main control circuit is also connected with the manual inflation detection circuit, and the main control circuit is also used for determining the working state and the control type of the air pump according to the manual inflation detection signal.
3. The air pump control circuit of claim 2, further comprising:
and the timing inflation control circuit is connected with the air pump and is used for receiving the timing inflation control signal provided by the main control circuit and controlling the working state of the air pump according to the timing inflation control signal.
4. The air pump control circuit of claim 1, wherein the manual control circuit comprises:
the key module is connected with a power supply and used for generating the manual switch control signal according to the key action;
and the manual switch module is connected with the key module and the air pump and is used for receiving the manual switch control signal and switching according to the manual switch control signal so as to switch the working state of the air pump.
5. The air pump control circuit of claim 4, wherein the key module comprises: the first resistor, the first key, the first capacitor, the second resistor and the first diode;
the first end of the first resistor is connected with the first power supply end, the second end of the first resistor is connected with the first end of the first key, the second end of the first key, the first end of the first capacitor, the first end of the second resistor and the cathode of the first diode are commonly connected with the manual switch module, and the second end of the first capacitor, the second end of the second resistor and the anode of the first diode are commonly grounded.
6. The air pump control circuit of claim 4, wherein the manual switch module comprises: the first switch tube, the second capacitor and the third resistor;
the first end of the first switch tube and the first end of the second capacitor are connected to the negative electrode of the air pump, the second end of the second capacitor is connected to the first end of the third resistor, and the second end of the first switch tube and the second end of the third resistor are grounded.
7. The air pump control circuit according to claim 1, wherein the air pump detection circuit includes: the fourth resistor, the fifth resistor, the sixth resistor, the third capacitor, the first analog switch and the second diode;
the first end of the sixth resistor is connected with the negative electrode of the air pump, the second end of the sixth resistor is connected with the first end of the first analog switch, the second end of the first analog switch, the first end of the fourth resistor and the negative electrode of the second diode are commonly connected with the air pump detection signal end of the main control circuit, the second end of the fourth resistor and the positive electrode of the second diode are commonly grounded, the third end of the first analog switch and the first end of the third capacitor are commonly connected with the second power supply end, the second end of the third capacitor is grounded, the fourth end of the first analog switch is connected with the first end of the fifth resistor, and the second end of the fifth resistor is connected with the air pump detection control end of the main control circuit.
8. An air pump apparatus, characterized in that the air pump apparatus comprises:
an equipment air inlet;
the air inlet of the air pump is connected with the equipment air inlet;
the air pump control circuit according to any one of claims 1 to 7, for controlling and detecting an operation state of the air pump;
the first end of the first three-way pipe is connected with the air outlet of the air pump;
the first end of the first electromagnetic valve is connected with the second end of the first three-way pipe;
the first pressure acquisition module is connected with the second end of the first electromagnetic valve and is positioned in a first air path and used for detecting the air pressure of the first air path to generate a first air pressure detection signal;
the first end of the second electromagnetic valve is connected with the third end of the first three-way pipe;
the first end of the second three-way pipe is connected with the second end of the second electromagnetic valve;
the second pressure acquisition module is connected with the second end of the second three-way pipe and positioned in a second air path and is used for detecting the air pressure of the second air path to generate a second air pressure detection signal;
the first end of the third electromagnetic valve is connected with the third end of the second three-way pipe;
the equipment air outlet is connected with the second end of the third electromagnetic valve;
the main control board is respectively connected with the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first pressure acquisition module, the second pressure acquisition module and the air pump control circuit, and is used for driving the air pump control circuit to work and detecting whether the air pump equipment leaks air according to the first air pressure detection signal and the second air pressure detection signal.
9. The air pump apparatus of claim 8, further comprising:
and the display module is connected with the main control circuit and used for displaying the first air pressure detection signal, the second air pressure detection signal and the air leakage detection result.
10. A bubble level gauge, comprising: an air pump control circuit as claimed in any one of claims 1 to 7 or an air pump apparatus as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321424085.7U CN220185331U (en) | 2023-06-06 | 2023-06-06 | Air pump control circuit, air pump equipment and bubble type liquid level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321424085.7U CN220185331U (en) | 2023-06-06 | 2023-06-06 | Air pump control circuit, air pump equipment and bubble type liquid level gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220185331U true CN220185331U (en) | 2023-12-15 |
Family
ID=89107704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321424085.7U Active CN220185331U (en) | 2023-06-06 | 2023-06-06 | Air pump control circuit, air pump equipment and bubble type liquid level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220185331U (en) |
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2023
- 2023-06-06 CN CN202321424085.7U patent/CN220185331U/en active Active
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