CN215970749U - Paper detection circuit for printer - Google Patents
Paper detection circuit for printer Download PDFInfo
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- CN215970749U CN215970749U CN202121346752.5U CN202121346752U CN215970749U CN 215970749 U CN215970749 U CN 215970749U CN 202121346752 U CN202121346752 U CN 202121346752U CN 215970749 U CN215970749 U CN 215970749U
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Abstract
The utility model relates to the technical field of paper detection circuits, in particular to a paper detection circuit for a printer, which comprises a main control circuit, an output power state circuit, an interface circuit and an infrared reflection detection circuit, wherein the main control circuit, the output power state circuit, the interface circuit and the infrared reflection detection circuit are arranged on a printer body; this scheme is through setting up the master control circuit on printer body, output power status circuit, interface circuit and the infrared reflection detection circuitry between the cooperation, can know clearly whether paper and the position in a storehouse of paper in the printer body still, improves the convenience of work.
Description
Technical Field
The utility model relates to the technical field of paper detection circuits, in particular to a paper detection circuit for a printer.
Background
The automatic teller machine generally has a printing function, printer paper detection generally uses a detection function of the printer, if the paper is used up, an alarm cannot be given in time, and the printer paper detection is only known after a fault is reported in the next printing process, so that a lot of trouble is brought to work.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a paper detection circuit for a printer to solve the technical problem.
In order to achieve the purpose, the utility model provides the following technical scheme: a paper detection circuit for a printer comprises a main control circuit, an output power state circuit, an interface circuit and an infrared reflection detection circuit, wherein the main control circuit, the output power state circuit, the interface circuit and the infrared reflection detection circuit are arranged on a printer body, and the main control circuit is respectively and electrically connected with the output power state circuit, the interface circuit and the infrared reflection detection circuit.
Preferably, the infrared reflection detection circuit includes a resistor R2, a resistor R3 and a photoelectric coupler J1, a first pin of the photoelectric coupler J1 is electrically connected with one end of the resistor R2, another end of the resistor R2 is electrically connected with a power supply, a second pin of the photoelectric coupler J1 and a third pin of the photoelectric coupler J1 are both grounded, a fourth pin of the photoelectric coupler J1 is electrically connected with one end of the main control circuit and one end of the resistor R3 respectively, and an end of the resistor R3 is electrically connected with the power supply.
Preferably, the output power status circuit includes a resistor R1, a resistor R4, a diode D1 and a diode D2, an anode of the diode D2 is connected to the power supply, a cathode of the diode D2 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is grounded, an anode of the diode D1 is electrically connected to the main control circuit, a cathode of the diode D1 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is grounded.
Preferably, the interface circuit comprises a connector P1, a first pin of the connector P1 is connected with a power supply, a second pin of the connector P1 is connected with the ground, and a third pin of the connector P1 is electrically connected with a main control circuit.
Preferably, the main control circuit includes a chip U1 and a capacitor C1, a first pin of the chip U1 is electrically connected to the infrared reflection detection circuit, a second pin of the chip U1 is electrically connected to the output power state circuit and the interface circuit, a third pin of the chip U1 is electrically connected to a fifth pin of the chip U1 and one end of the capacitor C1, a seventh pin of the chip U1 is electrically connected to the other end of the capacitor C1, a seventh pin of the chip U1 and the other end of the capacitor C1 are both grounded, and a ninth pin of the chip U1 is electrically connected to an eleventh pin of the chip U1, a thirteenth pin of the chip U1 and a fourteenth pin of the chip U1.
Compared with the prior art, the utility model has the beneficial effects that:
by arranging the infrared reflection detection circuit and utilizing the principle that paper can reflect light in white, infrared light is reflected by the paper to record whether the paper and the bin position of the paper exist or not, and when the infrared light is emitted, the existence of the paper is proved when the reflected infrared light is received; setting a main control circuit for processing external signals; an interface circuit is arranged and can output high and low level signals to an upper computer; this scheme is through setting up the master control circuit on printer body, output power status circuit, interface circuit and the infrared reflection detection circuitry between the cooperation, can know clearly whether paper and the position in a storehouse of paper in the printer body still, improves the convenience of work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a connection block diagram of the present invention;
FIG. 2 is a schematic circuit diagram of an infrared reflection detection circuit according to the present invention;
FIG. 3 is a circuit schematic of an output power status circuit of the present invention;
FIG. 4 is a circuit schematic of an interface circuit of the present invention;
fig. 5 is a circuit schematic diagram of the main control circuit of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an infrared reflection detection circuit; 2. an output power status circuit; 3. an interface circuit; 4. a master control circuit.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a paper detection circuit for a printer, characterized in that: including main control circuit 4, output power status circuit 2, interface circuit 3 and the infrared reflection detection circuitry 1 of setting on the printer body, main control circuit 4 is connected with output power status circuit 2, interface circuit 3 and infrared reflection detection circuitry 1 electricity respectively.
Specifically, the infrared reflection detection circuit 1 includes a resistor R2, a resistor R3 and a photoelectric coupler J1, a first pin of the photoelectric coupler J1 is electrically connected with one end of the resistor R2, another end of the resistor R2 is electrically connected with a power supply, a second pin of the photoelectric coupler J1 and a third pin of the photoelectric coupler J1 are both grounded, a fourth pin of the photoelectric coupler J1 is electrically connected with one ends of the main control circuit 4 and the resistor R3, and an end of the resistor R3 is electrically connected with the power supply.
As can be seen from the above description, the resistor R2 is a voltage-reducing resistor for supplying voltage to the light-emitting tube of the photocoupler J1, and the resistor R3 is for supplying voltage-reducing power to the receiving tube of the photocoupler J1.
Specifically, the output power state circuit 2 includes a resistor R1, a resistor R4, a diode D1, and a diode D2, an anode of the diode D2 is connected to the power supply, a cathode of the diode D2 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is grounded, an anode of the diode D1 is electrically connected to the main control circuit 4, a cathode of the diode D1 is electrically connected to one end of the resistor R1, and the other end of the resistor R1 is grounded.
As can be seen from the above description, the resistor R4 provides a step-down power supply for the diode D2 to drive the diode D2; the resistor R1 provides power supply voltage reduction for the diode D1, and when a signal is present, the diode D1 lights up, and conversely lights down.
Specifically, the interface circuit 3 includes a connector P1, a first pin of the connector P1 is connected to a power supply, a second pin of the connector P1 is grounded, and a third pin of the connector P1 is electrically connected to the main control circuit 4.
As can be seen from the above description, the connector P1 inputs the operating voltage and outputs the signal, the first pin and the second pin of the connector P1 input the voltage of 5V, and the third pin of the connector P1 outputs the high-low level signal.
Specifically, the main control circuit 4 includes a chip U1 and a capacitor C1, a first pin of the chip U1 is electrically connected to the infrared reflection detection circuit 1, a second pin of the chip U1 is electrically connected to the output power state circuit 2 and the interface circuit 3, a third pin of the chip U1 is electrically connected to a fifth pin of the chip U1 and one end of the capacitor C1, a seventh pin of the chip U1 is electrically connected to the other end of the capacitor C1, a seventh pin of the chip U1 and the other end of the capacitor C1 are both grounded, and a ninth pin of the chip U1 is electrically connected to an eleventh pin of the chip U1, a thirteenth pin of the chip U1 and a fourteenth pin of the chip U1.
As can be seen from the above description, the chip U1 of the main control circuit uses a 74HC146 lewis triggered inverter to convert the received infrared electrical signal into a stable output signal.
Example (b):
referring to fig. 1, a paper detection circuit for a printer includes a main control circuit 4, an output power status circuit 2, an interface circuit 3, and an infrared reflection detection circuit 1, which are disposed on a printer body, wherein the main control circuit 4 is electrically connected to the output power status circuit 2, the interface circuit 3, and the infrared reflection detection circuit 1, respectively.
Referring to fig. 2, the infrared reflection detection circuit 1 includes a resistor R2 (with a resistance of 180 Ω), a resistor R3 (with a resistance of 10k ohms), and a photocoupler J1 (with a model ST188), a first pin of the photocoupler J1 is electrically connected to one end of the resistor R2, another end of the resistor R2 is connected to a power supply, a second pin of the photocoupler J1 and a third pin of the photocoupler J1 are both grounded, a fourth pin of the photocoupler J1 is electrically connected to one ends of the main control circuit 4 and the resistor R3, and one end of the resistor R3 is connected to the power supply.
Infrared reflection detection circuitry 1 has integrateed infrared emission module and infrared receiving module, and through placing infrared reflection detection circuitry 1 below the paper position in the printer body, the infrared light comes the record through the reflection of paper and whether has the position in storehouse of paper and paper yet.
Referring to fig. 3, the output power status circuit 2 includes a resistor R1 (with a resistance of 2k Ω), a resistor R4 (with a resistance of 2k Ω), a diode D1 (with a diode D1) and a diode D2 (with a diode D2), an anode of the diode D2 is connected to the power supply, a cathode of the diode D2 is electrically connected to one end of the resistor R4, another end of the resistor R4 is grounded, an anode of the diode D1 is electrically connected to the main control circuit 4, a cathode of the diode D1 is electrically connected to one end of the resistor R1, and another end of the resistor R1 is grounded.
Referring to fig. 4, the interface circuit 3 includes a connector P1, a first pin of the connector P1 is connected to a power supply, a second pin of the connector P1 is connected to ground, and a third pin of the connector P1 is electrically connected to the main control circuit 4.
Referring to fig. 5, the main control circuit 4 includes a chip U1 (model 74HC14) and a capacitor C1 (capacitance value is 0.1 μ F), a first pin of the chip U1 is electrically connected to the infrared reflection detection circuit 1, a second pin of the chip U1 is electrically connected to the output power state circuit 2 and the interface circuit 3, a third pin of the chip U1 is electrically connected to a fifth pin of the chip U1 and one end of the capacitor C1, a seventh pin of the chip U1 is electrically connected to the other end of the capacitor C1, a seventh pin of the chip U1 and the other end of the capacitor C1 are both grounded, and a ninth pin of the chip U1 is electrically connected to an eleventh pin of the chip U1, a thirteenth pin of the chip U1 and a fourteenth pin of the chip U1.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents.
Claims (5)
1. A paper detection circuit for a printer, characterized in that: the printer comprises a main control circuit (4), an output power state circuit (2), an interface circuit (3) and an infrared reflection detection circuit (1), wherein the main control circuit (4), the output power state circuit (2), the interface circuit (3) and the infrared reflection detection circuit (1) are arranged on a printer body, and the main control circuit (4) is electrically connected with the output power state circuit (2), the interface circuit (3) and the infrared reflection detection circuit (1) respectively.
2. The paper detection circuit for a printer according to claim 1, wherein: infrared reflection detection circuitry (1) includes resistance R2, resistance R3 and photoelectric coupler J1, photoelectric coupler J1's first pin is connected with resistance R2's one end electricity, resistance R2's another termination power supply, photoelectric coupler J1's second pin and photoelectric coupler J1's third pin all ground connection, photoelectric coupler J1's fourth pin is connected with main control circuit (4) and resistance R3's one end electricity respectively, a termination power supply of resistance R3.
3. The paper detection circuit for a printer according to claim 1, wherein: output power state circuit (2) include resistance R1, resistance R4, diode D1 and diode D2, diode D2's positive pole power connection, diode D2's negative pole is connected with resistance R4's one end electricity, resistance R4's other end ground connection, diode D1's positive pole is connected with main control circuit (4) electricity, diode D1's negative pole is connected with resistance R1's one end electricity, resistance R1's other end ground connection.
4. The paper detection circuit for a printer according to claim 1, wherein: the interface circuit (3) comprises a connector P1, a first pin of the connector P1 is connected with a power supply, a second pin of the connector P1 is grounded, and a third pin of the connector P1 is electrically connected with the main control circuit (4).
5. The paper detection circuit for a printer according to claim 1, wherein: the main control circuit (4) comprises a chip U1 and a capacitor C1, a first pin of the chip U1 is electrically connected with the infrared reflection detection circuit (1), a second pin of the chip U1 is electrically connected with the output power state circuit (2) and the interface circuit (3) respectively, a third pin of the chip U1 is electrically connected with a fifth pin of the chip U1 and one end of the capacitor C1 respectively, a seventh pin of the chip U1 is electrically connected with the other end of the capacitor C1, the seventh pin of the chip U1 and the other end of the capacitor C1 are both grounded, and a ninth pin of the chip U1 is electrically connected with an eleventh pin of the chip U1, a thirteenth pin of the chip U1 and a fourteenth pin of the chip U1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121346752.5U CN215970749U (en) | 2021-06-17 | 2021-06-17 | Paper detection circuit for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121346752.5U CN215970749U (en) | 2021-06-17 | 2021-06-17 | Paper detection circuit for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215970749U true CN215970749U (en) | 2022-03-08 |
Family
ID=80517030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121346752.5U Active CN215970749U (en) | 2021-06-17 | 2021-06-17 | Paper detection circuit for printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215970749U (en) |
-
2021
- 2021-06-17 CN CN202121346752.5U patent/CN215970749U/en active Active
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