CN215639660U - Temperature compensation type liquid level detection device - Google Patents
Temperature compensation type liquid level detection device Download PDFInfo
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- CN215639660U CN215639660U CN202121647195.0U CN202121647195U CN215639660U CN 215639660 U CN215639660 U CN 215639660U CN 202121647195 U CN202121647195 U CN 202121647195U CN 215639660 U CN215639660 U CN 215639660U
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Abstract
The utility model discloses a temperature compensation type liquid level detection device which comprises a main control module, an LDO voltage stabilization module, a 5V direct current power supply module, a water level detection result display module and a debugging/calibrating interface, wherein the main control module, the LDO voltage stabilization module, the water level detection result display module and the debugging/calibrating interface are respectively arranged on a circuit board, the LDO voltage stabilization module, the water level detection result display module and the debugging/calibrating interface are electrically connected with the main control module, and the LDO voltage stabilization module is electrically connected with the 5V direct current power supply module. The circuit board is attached to the inner wall of the container to detect the liquid level, the non-contact measurement is not affected by the dirt, impurities, sediment and other substances in the liquid and various properties of the liquid, and in addition, the temperature compensation algorithm of the temperature detection channel can accurately detect the liquid level at different temperatures, so that the water level in the container can be accurately judged.
Description
Technical Field
The utility model relates to the technical field of liquid level detection devices, in particular to a temperature compensation type liquid level detection device.
Background
The liquid level detection device is a device which is installed in a container and used for detecting the liquid level in the container, the existing liquid level detection device generally needs to be in contact with the liquid in the container, the existing liquid level detection device is affected by substances such as dirt, impurities and precipitates in the liquid and various properties of the liquid, the detection accuracy is further low, and based on the problems, the temperature compensation type liquid level detection device is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a temperature compensation type liquid level detection device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a liquid level detection device of temperature compensation formula, is including installing host system, LDO voltage stabilizing module, 5V DC supply module, water level testing result display module and debugging/calibration interface on the circuit board respectively, LDO voltage stabilizing module, water level testing result display module and debugging/calibration interface all with host system electric connection, and LDO voltage stabilizing module and 5V DC supply module electric connection, host system still electric connection has a high water level detection passageway K1, a low water level detection passageway K2 and an auxiliary channel K3 of installing on the circuit board.
Preferably, the low water level detection channel K2 is located below the high water level detection channel K1, the auxiliary channel K3 is located below the low water level detection channel K2, and the auxiliary channel K3 is a temperature detection channel and is internally provided with a temperature compensation algorithm.
Preferably, the main control module includes a main control chip U1 of the SOP16 model, pin 1 of the main control chip U1 is electrically connected to one end of a resistor R8, the other end of the resistor R8 is electrically connected to one end of a capacitor C2 and one end of a resistor R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is electrically connected to one end of a high-level VCC and one end of a resistor R6, the other end of the resistor R6 is electrically connected to one end of a capacitor C1 and one end of a resistor R2, the other end of the capacitor C1 is grounded, the other end of the resistor R2 is electrically connected to pin 2 of the main control chip U1, pin 6 of the main control chip U1 is electrically connected to one end of a resistor R5, the other end of the resistor R5 is electrically connected to the high-level detection channel K1, pin 10 of the main control chip U1 is electrically connected to one end of a resistor R4, the other end of the resistor R4 is electrically connected to the low-level detection channel K2, and pin 11 of the main control chip U1 is electrically connected to one end of a resistor R3, the other end and the auxiliary channel K3 electric connection of resistance R3, master control chip U1's pin 14 and 5V DC power supply module electric connection, master control chip U1's pin 15 electric connection has the one end of electric capacity C3, and electric capacity C3's other end electric connection has the one end of resistance R10, and resistance R10's the other end and master control chip U1's pin 16 electric connection to ground.
Preferably, the LDO voltage regulation module includes a 3.0V voltage regulation chip U2, pin 1 of voltage regulation chip U2 is electrically connected to a high level VDD, pin 2 of voltage regulation chip U2 is grounded, pin 3 of voltage regulation chip U2 is electrically connected to one end of a resistor R1, the other end of resistor R1 is electrically connected to the high level VDD, pin 5 of voltage regulation chip U2 is electrically connected to one end of a resistor R9 and one end of a capacitor C7, the other end of capacitor C7 is grounded, the other end of resistor R9 is electrically connected to one end of a capacitor C4, one end of a capacitor C5 and the high level VCC, and the other end of a capacitor C4 and the other end of a capacitor C5 are both grounded.
Preferably, the high level VDD is electrically connected to a pin 4 of the debug/calibration interface, a pin 3 of the debug/calibration interface is electrically connected to a pin 2 of the main control chip U1, a pin 2 of the debug/calibration interface is grounded, and a pin 1 of the debug/calibration interface is electrically connected to a pin 1 of the main control chip U1.
Preferably, the water level detection result display module comprises an indicator light LED-H and an indicator light LED-L, a negative electrode of the indicator light LED-H is electrically connected with one end of a resistor R11, the other end of a resistor R11 is electrically connected with one end of a resistor R12, the other end of the resistor R12 is electrically connected with a negative electrode of the indicator light LED-L, a positive electrode of the indicator light LED-L is electrically connected with a pin 7 of a main control chip U1, and a positive electrode of the indicator light LED-H is electrically connected with a pin 8 of a main control chip U1.
The circuit board is attached to the inner wall of the container to detect the liquid level, the non-contact measurement is not affected by the dirt, impurities, sediment and other substances in the liquid and various properties of the liquid, and in addition, the temperature compensation algorithm of the temperature detection channel can accurately detect the liquid level at different temperatures, so that the water level in the container can be accurately judged.
Drawings
FIG. 1 is a block diagram of a system connection of a temperature compensated liquid level detection apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a temperature compensation type liquid level detection apparatus according to the present invention;
FIG. 3 is a circuit diagram of the master control module of FIG. 1;
FIG. 4 is a circuit diagram of the LDO regulator module of FIG. 1;
FIG. 5 is a circuit diagram of a water level detection result display module in FIG. 1;
fig. 6 is a circuit diagram of the debug/calibration interface of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a temperature compensation type liquid level detecting apparatus includes a main control module, an LDO voltage stabilizing module, a 5V dc power supply module, a water level detection result display module, and a debugging/calibrating interface, which are respectively mounted on a circuit board, the LDO voltage stabilizing module, the water level detection result display module, and the debugging/calibrating interface are all electrically connected to the main control module, and the LDO voltage stabilizing module is electrically connected to the 5V dc power supply module, the main control module is also electrically connected to a high water level detection channel K1 mounted on the circuit board, a low water level detection channel K2 mounted on the circuit board, and an auxiliary channel K3 mounted on the circuit board, the low water level detection channel K2 is located below the high water level detection channel K1, and the auxiliary channel K3 is located below the low water level detection channel K2, the auxiliary channel K3 is a temperature detection channel, and a temperature compensation algorithm is built therein, the circuit board is attached to the inner wall of the container to detect the liquid level, the non-contact measurement is not affected by the dirt, impurities, sediment and other substances in the liquid and various properties of the liquid, and in addition, the temperature compensation algorithm of the temperature detection channel can accurately detect the liquid level at different temperatures, so that the water level in the container can be accurately judged.
Referring to fig. 3, the main control module includes a main control chip U1 of an SOP16 model, pin 1 of the main control chip U1 is electrically connected to one end of a resistor R8, the other end of the resistor R8 is electrically connected to one end of a capacitor C2 and one end of a resistor R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is electrically connected to one ends of a high VCC and a resistor R6, the other end of the resistor R6 is electrically connected to one end of a capacitor C1 and one end of a resistor R2, the other end of a capacitor C1 is grounded, the other end of a resistor R2 is electrically connected to pin 2 of the main control chip U1, pin 6 of the main control chip U1 is electrically connected to one end of a resistor R5, the other end of the resistor R5 is electrically connected to a high water level detection channel K1, pin 10 of the main control chip U1 is electrically connected to one end of a resistor R4, the other end of the resistor R4 is electrically connected to a low water level detection channel K4, and one end of pin 11 of the main control chip U4 is electrically connected to one end of the resistor R4, the other end of the resistor R3 is electrically connected with the auxiliary channel K3, a pin 14 of the main control chip U1 is electrically connected with the 5V direct current power supply module, a pin 15 of the main control chip U1 is electrically connected with one end of a capacitor C3, the other end of the capacitor C3 is electrically connected with one end of a resistor R10, and the other end of the resistor R10 is electrically connected with a pin 16 of the main control chip U1 and is grounded.
Referring to fig. 4 and 6, the LDO regulator module includes a 3.0V regulator chip U2, pin 1 of the regulator chip U2 is electrically connected to a high level VDD, pin 2 of the regulator chip U2 is grounded, pin 3 of the regulator chip U2 is electrically connected to one end of a resistor R1, the other end of the resistor R1 is electrically connected to the high level VDD, pin 5 of the regulator chip U2 is electrically connected to one end of a resistor R9 and one end of a capacitor C7, the other end of the capacitor C7 is grounded, the other end of the resistor R9 is electrically connected to one end of a capacitor C4, one end of the capacitor C5 and the high level VCC, the other end of the capacitor C4 and the other end of the capacitor C5 are grounded, the high level VDD is electrically connected to pin 4 of the debug/calibrate interface, pin 3 of the debug/calibrate interface is electrically connected to pin 2 of the main control chip U1, pin 2 of the debug/calibrate interface is grounded, pin 1 of the debug/calibrate interface is electrically connected to pin 1 of the main control chip U1, the LD0 voltage stabilization module is used for performing voltage stabilization processing on the voltage input to the main control module, and in addition, the staff performs production calibration through the debugging/calibration interface, so that each device is calibrated, and the difference is eliminated.
Referring to fig. 5, the water level detection result display module includes an indicator light LED-H and an indicator light LED-L, a cathode of the indicator light LED-H is electrically connected to one end of a resistor R11, another end of the resistor R11 is electrically connected to one end of a resistor R12, and is grounded, another end of the resistor R12 is electrically connected to a cathode of the indicator light LED-L, an anode of the indicator light LED-L is electrically connected to a pin 7 of a main control chip U1, an anode of the indicator light LED-H is electrically connected to a pin 8 of a main control chip U1, and the water level detection result display module displays a water level detection result by using the indicator light LED-H and the indicator light LED-L.
The utility model utilizes the capacitance touch mode to detect the liquid level, so that the circuit board can be used for detecting the liquid level by being pasted on the inner wall of the container, the non-contact measurement characteristic ensures that the circuit board is not influenced by substances such as dirt, impurities, sediments and the like in the liquid and various properties of the liquid, in addition, the main control chip U1 in the main control module has different degrees of influence on the charges through different temperatures, so that the detection result has difference, then the main control chip U1 obtains a temperature compensation algorithm from a temperature detection channel according to difference data, the main control chip U1 compensates real-time values at different temperatures to the normal temperature or any temperature through the temperature compensation algorithm, thereby eliminating the influence of the temperature and obtaining the current liquid temperature, at the moment, the main control chip U1 obtains the variation of the liquid temperature through the cooperation of a theoretical value of the auxiliary channel K3 at a certain temperature and the temperature compensation algorithm, thereby obtain the speed of liquid cooling, then master control chip U1 reunion high water level detection passageway K1 and low water level detection passageway K2 can carry out accurate detection under the different temperatures to the accurate water level in judging the container.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a liquid level detection device of temperature compensation formula, is including installing host system, LDO voltage stabilizing module, 5V DC supply module, water level testing result display module and debugging/calibration interface on the circuit board respectively, its characterized in that, LDO voltage stabilizing module, water level testing result display module and debugging/calibration interface all with host system electric connection, and LDO voltage stabilizing module and 5V DC supply module electric connection, host system still electric connection have one install high water level detection passageway K1 on the circuit board, one install low water level detection passageway K2 on the circuit board and one install the auxiliary channel K3 on the circuit board.
2. The temperature-compensated liquid level detecting apparatus according to claim 1, wherein the low water level detecting channel K2 is located below the high water level detecting channel K1, the auxiliary channel K3 is located below the low water level detecting channel K2, and the auxiliary channel K3 is a temperature detecting channel with a temperature compensation algorithm built therein.
3. The temperature compensation type liquid level detection device according to claim 1, wherein the main control module comprises a main control chip U1 of SOP16 type, pin 1 of the main control chip U1 is electrically connected with one end of a resistor R8, the other end of the resistor R8 is electrically connected with one end of a capacitor C2 and one end of a resistor R7, the other end of the capacitor C2 is grounded, the other end of the resistor R7 is electrically connected with one end of a high-level VCC and a resistor R6, the other end of the resistor R6 is electrically connected with one end of a capacitor C1 and one end of a resistor R2, the other end of the capacitor C1 is grounded, the other end of the resistor R2 is electrically connected with pin 2 of the main control chip U1, pin 6 of the main control chip U1 is electrically connected with one end of a resistor R5, the other end of the resistor R5 is electrically connected with a high-level detection channel K1, pin 10 of the main control chip U1 is electrically connected with one end of a resistor R4, the other end and the low water level detection channel K2 electric connection of resistance R4, main control chip U1's pin 11 electric connection has resistance R3's one end, resistance R3's the other end and auxiliary channel K3 electric connection, main control chip U1's pin 14 and 5V DC power supply module electric connection, main control chip U1's pin 15 electric connection has electric capacity C3's one end, electric capacity C3's the other end electric connection has resistance R10's one end, resistance R10's the other end and main control chip U1's pin 16 electric connection to ground connection.
4. The temperature compensation type liquid level detection device according to claim 1, wherein the LDO voltage stabilization module comprises a 3.0V voltage stabilization chip U2, a pin 1 of a voltage stabilization chip U2 is electrically connected with a high level VDD, a pin 2 of a voltage stabilization chip U2 is grounded, a pin 3 of a voltage stabilization chip U2 is electrically connected with one end of a resistor R1, the other end of a resistor R1 is electrically connected with the high level VDD, a pin 5 of a voltage stabilization chip U2 is electrically connected with one end of a resistor R9 and one end of a capacitor C7, the other end of a capacitor C7 is grounded, the other end of a resistor R9 is electrically connected with one end of a capacitor C4, one end of a capacitor C5 and a high level VCC, and the other end of a capacitor C4 and the other end of a capacitor C5 are grounded.
5. The temperature-compensated liquid level detecting device of claim 4, wherein the high level VDD is electrically connected to pin 4 of the debug/calibrate interface, pin 3 of the debug/calibrate interface is electrically connected to pin 2 of the main control chip U1, pin 2 of the debug/calibrate interface is grounded, and pin 1 of the debug/calibrate interface is electrically connected to pin 1 of the main control chip U1.
6. The temperature compensation type liquid level detection device according to claim 1, wherein the water level detection result display module comprises an indicator light LED-H and an indicator light LED-L, a cathode of the indicator light LED-H is electrically connected with one end of a resistor R11, the other end of a resistor R11 is electrically connected with one end of a resistor R12, and is grounded, the other end of the resistor R12 is electrically connected with a cathode of the indicator light LED-L, an anode of the indicator light LED-L is electrically connected with a pin 7 of the main control chip U1, and an anode of the indicator light LED-H is electrically connected with a pin 8 of the main control chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647195.0U CN215639660U (en) | 2021-07-19 | 2021-07-19 | Temperature compensation type liquid level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647195.0U CN215639660U (en) | 2021-07-19 | 2021-07-19 | Temperature compensation type liquid level detection device |
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| Publication Number | Publication Date |
|---|---|
| CN215639660U true CN215639660U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121647195.0U Active CN215639660U (en) | 2021-07-19 | 2021-07-19 | Temperature compensation type liquid level detection device |
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| Country | Link |
|---|---|
| CN (1) | CN215639660U (en) |
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- 2021-07-19 CN CN202121647195.0U patent/CN215639660U/en active Active
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