CN217155527U - Water level base plate for detecting water level of water tank of coffee vending machine - Google Patents
Water level base plate for detecting water level of water tank of coffee vending machine Download PDFInfo
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- CN217155527U CN217155527U CN202220744095.8U CN202220744095U CN217155527U CN 217155527 U CN217155527 U CN 217155527U CN 202220744095 U CN202220744095 U CN 202220744095U CN 217155527 U CN217155527 U CN 217155527U
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Abstract
The utility model provides a water level base plate that is used for coffee vending machine's detection water tank water level, belongs to automatic vending machine circuit and function technical field. The method comprises the following steps: the signal acquisition module is respectively connected with the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit; and the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are connected in parallel and then are connected with the coffee machine main control board. The utility model provides a higher problem of traditional coffee automatic vending machine water tank water level control mode cost through water level probe detected signal, carries out signal amplification via operational amplifier and handles, then exports high level or low level through differential voltage comparator to can detect the height water level of cold water storage cistern and hot-water tank respectively, effectively improve water level detection's accuracy, also promote user experience.
Description
Technical Field
The utility model belongs to the technical field of automatic vending machine circuit and function, especially, relate to a water level base plate that is used for coffee vending machine's detection water tank water level.
Background
The water tank for the traditional coffee vending machine adopts a floating ball type water level control mode, the floating ball is made of a material which cannot reach the food grade and can pollute the water quality in the water tank, and the cost is higher by adopting the food grade heat-resistant floating ball; on the other hand, the floating ball works in the high-temperature water tank for a long time, the material of the floating ball can be slowly aged, the water quality in the water tank can be polluted at the time, the user experience is influenced, and even the health of a human body is damaged.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the above-mentioned prior art, the utility model provides a water level base plate for coffee vending machine's detection water tank water level solves the higher problem of traditional coffee vending machine water tank water level control mode cost, can detect the height water level of cold water storage cistern and hot-water tank respectively.
The technical scheme is as follows:
a water level base for detecting a water level of a water tank of a coffee vending machine, comprising:
the signal acquisition module is respectively connected with the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit;
and the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are connected in parallel and then are connected with the coffee machine main control board.
Furthermore, the signal acquisition module comprises a cold water tank lower limit water level probe, the cold water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
Furthermore, the signal acquisition module comprises a cold water tank upper limit water level probe, the cold water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
Furthermore, the signal acquisition module comprises a hot water tank lower limit water level probe, the hot water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
Furthermore, the signal acquisition module comprises a hot water tank upper limit water level probe, the hot water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
Further, the signal amplification circuit comprises an operational amplifier TLC 2272; the voltage comparison circuit includes a differential voltage comparator LM339 AD.
Further, still include:
the plug-in connector P2 is connected with the signal acquisition module P2, and the plug-in connector P2 is respectively connected with the cold water tank lower limit water level detection circuit and the cold water tank upper limit water level detection circuit;
the plug-in connector P4, the signal acquisition module is connected with the plug-in connector P4, and the plug-in connector P4 is respectively connected with the lower limit water level detection circuit of the hot water tank and the upper limit water level detection circuit of the hot water tank.
Further, also includes
The water heater comprises a plug connector P3 and a plug connector P1, wherein the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are respectively connected with the plug connector P3 and the plug connector P1.
The utility model has the advantages that:
a water level base plate for coffee vending machine's detection water tank water level replace floater formula water level control mode with water level probe and water level base plate, the higher problem of traditional coffee vending machine water tank water level control mode cost has been solved, through water level probe detected signal, carry out signal amplification via operational amplifier and handle, then export high level or low level through differential voltage comparator, thereby can detect the high low level of cold water storage cistern and hot-water tank respectively, water level detection's accuracy has effectively been improved, user experience has also been promoted.
Drawings
FIG. 1 is a diagram of a control system of the present invention;
fig. 2 is a circuit diagram 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. A water level base for detecting a water level of a water tank of a coffee vending machine will be further described with reference to fig. 1-2.
Example 1
A water level base for detecting a water level of a water tank of a coffee vending machine, comprising:
the signal acquisition module is respectively connected with the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit;
and the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are connected in parallel and then are connected with the coffee machine main control board.
The signal acquisition module comprises a cold water tank lower limit water level probe, the cold water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit. The lower limit water level detection circuit of the cold water tank amplifies a signal detected by the lower limit water level probe of the cold water tank through an operational amplifier in the signal amplification circuit, and then outputs a high level or a low level through a differential voltage comparator in the voltage comparison circuit, wherein the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe.
The signal acquisition module comprises a cold water tank upper limit water level probe, the cold water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit. The upper limit water level detection circuit of the cold water tank amplifies a signal detected by an upper limit water level probe of the cold water tank through an operational amplifier in a signal amplification circuit, and then outputs a high level or a low level through a differential voltage comparator in a voltage comparison circuit, wherein the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe.
The signal acquisition module comprises a hot water tank lower limit water level probe, the hot water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit. The lower limit water level detection circuit of the hot water tank amplifies a signal detected by the lower limit water level probe of the hot water tank through an operational amplifier in the signal amplification circuit, and then outputs a high level or a low level through a differential voltage comparator in the voltage comparison circuit, wherein the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe.
The signal acquisition module comprises a hot water tank upper limit water level probe, the hot water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit. The upper limit water level detection circuit of the hot water tank amplifies a signal detected by an upper limit water level probe of the hot water tank through an operational amplifier in a signal amplification circuit, and then outputs a high level or a low level through a differential voltage comparator in a voltage comparison circuit, wherein the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe.
The water level base plate processes the signals acquired by the water level probe and outputs the signals to the coffee machine main control board; the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe to the realization detects the high low water level of cold water tank and hot-water tank respectively.
Example 2
A water level base for detecting a water level of a water tank of a coffee vending machine, comprising:
the signal acquisition module is respectively connected with the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit;
and the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are connected in parallel and then are connected with the coffee machine main control board.
The signal acquisition module comprises a cold water tank lower limit water level probe, the cold water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
The signal acquisition module comprises a cold water tank upper limit water level probe, the cold water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
The signal acquisition module comprises a hot water tank lower limit water level probe, the hot water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
The signal acquisition module comprises a hot water tank upper limit water level probe, the hot water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
Preferably, as shown in fig. 2, the signal amplification circuit comprises an operational amplifier TLC 2272; the voltage comparison circuit includes a differential voltage comparator LM339 AD.
Preferably, the method further comprises the following steps:
the plug-in connector P2 is connected with the signal acquisition module P2, and the plug-in connector P2 is respectively connected with the cold water tank lower limit water level detection circuit and the cold water tank upper limit water level detection circuit;
the signal acquisition module is connected with the plug connector P4, and the plug connector P4 is respectively connected with the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit.
The water heater comprises a plug connector P3 and a plug connector P1, wherein the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are respectively connected with the plug connector P3 and the plug connector P1.
The lower limit water level detection circuit of the cold water tank is a voltage comparison circuit which is formed by enabling signals detected by a lower limit water level probe of the cold water tank to pass through an operational amplifier TLC2272 to form a signal amplification circuit, enabling the amplified signals to pass through a differential voltage comparator LM339AD, and outputting a high level (5V) or a low level (GND) after comparison according to a threshold level in the comparison circuit. A high level represents a water level below the water level probe and a low level represents a water level above the water level probe.
The upper limit water level detection circuit of the cold water tank is a voltage comparison circuit which is formed by enabling signals detected by an upper limit water level probe of the cold water tank to pass through an operational amplifier TLC2272 to form a signal amplification circuit, enabling the amplified signals to pass through a differential voltage comparator LM339AD, and outputting a high level (5V) or a low level (GND) after comparison according to a threshold level in the comparison circuit. A high level represents a water level below the water level probe and a low level represents a water level above the water level probe.
The lower limit water level detection circuit of the hot water tank is a voltage comparison circuit which is formed by combining signals detected by a lower limit water level probe of the hot water tank with an operational amplifier TLC2272, passing the amplified signals through a differential voltage comparator LM339AD, and outputting a high level (5V) or a low level (GND) after comparison according to a threshold level in the comparison circuit. A high level represents a water level below the water level probe and a low level represents a water level above the water level probe.
The upper limit water level detection circuit of the hot water tank is a voltage comparison circuit which is formed by combining signals detected by an upper limit water level probe of the hot water tank with an operational amplifier TLC2272, passing the amplified signals through a differential voltage comparator LM339AD, and outputting a high level (5V) or a low level (GND) after comparison according to a threshold level in the comparison circuit. A high level represents a water level below the water level probe and a low level represents a water level above the water level probe.
The water level base plate processes the signals acquired by the water level probe and outputs the signals to the coffee machine main control board; the high level represents that the water level is lower than the water level probe, and the low level represents that the water level is higher than the water level probe to the realization detects the high low water level of cold water tank and hot-water tank respectively.
The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.
Claims (8)
1. A water level base plate for detecting a water level of a water tank of a coffee vending machine, comprising:
the signal acquisition module is respectively connected with the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit;
and the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are connected in parallel and then are connected with the coffee machine main control board.
2. The water level base plate for detecting a water level of a water tank of a coffee vending machine according to claim 1,
the signal acquisition module comprises a cold water tank lower limit water level probe, the cold water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
3. The water level base plate for detecting a water level of a water tank of a coffee vending machine according to claim 1,
the signal acquisition module comprises a cold water tank upper limit water level probe, the cold water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the cold water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
4. The water level base plate for detecting a water level of a water tank of a coffee vending machine according to claim 1,
the signal acquisition module comprises a hot water tank lower limit water level probe, the hot water tank lower limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank lower limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
5. The water level base plate for detecting a water level of a water tank of a coffee vending machine according to claim 1,
the signal acquisition module comprises a hot water tank upper limit water level probe, the hot water tank upper limit water level detection circuit comprises a signal amplification circuit and a voltage comparison circuit, and the hot water tank upper limit water level probe is sequentially connected with the signal amplification circuit and the voltage comparison circuit.
6. The water level base plate for detecting the water level of the water tank of the coffee vending machine according to any one of claims 2 to 5,
the signal amplification circuit comprises an operational amplifier TLC 2272;
the voltage comparison circuit includes a differential voltage comparator LM339 AD.
7. The water level base for sensing a water level of a water tank of a coffee vending machine as recited in claim 1, further comprising:
the plug-in connector P2 is connected with the signal acquisition module P2, and the plug-in connector P2 is respectively connected with the cold water tank lower limit water level detection circuit and the cold water tank upper limit water level detection circuit;
the signal acquisition module is connected with the plug connector P4, and the plug connector P4 is respectively connected with the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit.
8. The water level base plate for detecting water level of water tank of coffee vending machine as claimed in claim 1, further comprising
The water heater comprises a plug connector P3 and a plug connector P1, wherein the cold water tank lower limit water level detection circuit, the cold water tank upper limit water level detection circuit, the hot water tank lower limit water level detection circuit and the hot water tank upper limit water level detection circuit are respectively connected with the plug connector P3 and the plug connector P1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220744095.8U CN217155527U (en) | 2022-04-01 | 2022-04-01 | Water level base plate for detecting water level of water tank of coffee vending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220744095.8U CN217155527U (en) | 2022-04-01 | 2022-04-01 | Water level base plate for detecting water level of water tank of coffee vending machine |
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| Publication Number | Publication Date |
|---|---|
| CN217155527U true CN217155527U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220744095.8U Active CN217155527U (en) | 2022-04-01 | 2022-04-01 | Water level base plate for detecting water level of water tank of coffee vending machine |
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| CN (1) | CN217155527U (en) |
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- 2022-04-01 CN CN202220744095.8U patent/CN217155527U/en active Active
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