CN218020855U - Label printer consumable state detection device and label printer - Google Patents

Abstract

The embodiment of the application provides a label printer consumptive material state detection device and label printer, wherein, main control unit gathers the first voltage of the photic ware output end department of photoelectric sensor through analog to digital converter, and then obtain the second voltage that makes first voltage reach standard voltage according to first voltage and standard voltage, and send the second voltage to photoelectric sensor's photic ware through digital to analog converter, so that photoelectric sensor work is on standard voltage, compared with prior art, this application is through the voltage of real-time adjustment photoelectric sensor's photic ware, in order to adapt to the difference of different batches of photoelectric sensor on the response scope, improve the positioning accuracy to label printer consumptive material.

Description

Label printer consumable state detection device and label printer

[ technical field ] A method for producing a semiconductor device

The embodiment of the application relates to the technical field of label printing, in particular to a device for detecting the state of consumable materials of a label printer and the label printer.

[ background of the invention ]

Label printer's consumptive material comprises body paper and label, location to label printer consumptive material detects the very important link of printing operation in-process, if the deviation appears in the location and the condition such as printing skew will appear, the condition such as light reflex sensor is generally adopted to the paper sensor of examining of present label printer, but light reflex sensor's response scope is too wide, the state of label printer consumptive material this moment can't pinpoint, for example judge that label printer consumptive material this moment is in the clearance paper state between two labels or the state that has paper of label, thereby lead to the deviation to the location of label printer consumptive material.

[ Utility model ] content

The embodiment of the application provides a device for detecting the state of consumable materials of a label printer, which is used for judging the state of the consumable materials of the label printer at the moment by a main controller according to the output voltage of a light receiver of a photoelectric sensor, so that the consumable materials of the label printer can be accurately positioned.

The application provides a device for detecting the consumable state of a label printer, which comprises a main controller, a digital-to-analog converter, an analog-to-digital converter and a photoelectric sensor;

the input end of the main controller is electrically connected to the output end of the analog-to-digital converter and used for acquiring a first voltage acquired by the analog-to-digital converter;

the output end of the main controller is electrically connected with the input end of the digital-to-analog converter and used for obtaining a second voltage which enables the first voltage to reach the standard voltage according to the first voltage and the standard voltage and inputting the second voltage to the digital-to-analog converter;

the photoelectric sensor comprises a light receiver, wherein the input end of the analog-to-digital converter is electrically connected with the output end of the light receiver and is used for collecting the first voltage at the output end of the light receiver;

the output end of the digital-to-analog converter is electrically connected to the input end of the light receiver and is used for outputting the second voltage to the input end of the light receiver.

In one embodiment, the apparatus further comprises a motor, and the main controller is electrically connected to the motor and configured to output a control signal to drive the motor to advance the current label printer consumable.

In one embodiment, the apparatus further comprises a memory, and the main controller is electrically connected to the memory and is configured to store the first voltage and/or the second voltage in the memory.

In one embodiment, the apparatus further includes an amplifying circuit, an input end of the amplifying circuit is electrically connected to an output end of the digital-to-analog converter, and an output end of the amplifying circuit is electrically connected to an input end of the light receptor.

In one embodiment, the amplifying circuit includes at least one or a combination of the following: field effect transistor, triode, amplifier.

In one embodiment, the light receiver is a phototransistor.

In one embodiment, the phototriode is an NPN-type triode, a collector of the NPN-type triode is electrically connected to the output end of the digital-to-analog converter, and an emitter of the NPN-type triode is electrically connected to the input end of the analog-to-digital converter.

In one embodiment, the phototriode is a PNP-type triode, an emitter of the PNP-type triode is electrically connected to the output terminal of the digital-to-analog converter, and a collector of the PNP-type triode is electrically connected to the input terminal of the analog-to-digital converter.

In one embodiment, the main controller, the digital-to-analog converter and the analog-to-digital converter are integrated in a microcontroller.

In a second aspect, the application provides a label printer provided with the above label printer consumable state detection device.

Among the above-mentioned label printer consumptive material state detection device, main control unit gathers the first voltage of the output end department of photoelectric sensor's photic ware through analog to digital converter, and then obtain the second voltage that makes first voltage reach standard voltage according to first voltage and standard voltage, and send the second voltage to photoelectric sensor's photic ware through digital to analog converter, so that photoelectric sensor work on standard voltage, the relative ratio is in prior art, this application is through the voltage of real-time adjustment photoelectric sensor's photic ware, in order to adapt to the difference of different batches of photoelectric sensor on induction range, improve the positioning accuracy to label printer consumptive material.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a circuit schematic of a prior art current regulation scheme;

FIG. 2 is a schematic structural diagram of a consumable status detection apparatus of a label printer according to an embodiment of the present disclosure;

FIG. 3 is a schematic circuit diagram of a consumable status detecting device of a label printer according to an embodiment of the present application;

FIG. 4 is a schematic circuit diagram of a consumable status detection device of a label printer according to an embodiment of the present application;

FIG. 5 is a schematic circuit diagram of a consumable status detection apparatus of a label printer according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a consumable status detection apparatus of a label printer according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a consumable status detection apparatus of a label printer according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a consumable status detection device of a label printer according to an embodiment of the present application.

[ detailed description ] embodiments

For better understanding of the technical solutions in the present specification, the following detailed description of the embodiments of the present application is provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only a few embodiments of the present specification, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present specification without any creative effort belong to the protection scope of the present specification.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the specification. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In general, a light reflection sensor is used as a paper detection sensor of a label printer. In a label printer, a controller collects induced current of a light reflection type sensor, the induced current of the light reflection type sensor at 150 uA-600 uA indicates that the state of printer consumable materials is paper, however, because the range of 150 uA-600 uA is too wide, the controller cannot uniformly indicate that paper is present at a value higher than 150uA and indicate gap paper at a value lower than 150uA during judgment, and because the judgment ranges of photoelectric sensors of label printers in different batches are different, the state of the printer consumable materials of the label printer at the moment cannot be judged by using a uniform judgment standard. The determination range of the photoelectric sensors between different batches is, for example, the determination range of batch a is: the current is about 200uA when the consumable state of the printer is paper, and the current is about 100uA when the consumable state of the printer is paper clearance; the judgment range of the B batch is as follows: the current is about 500uA when the consumable state of the printer is paper, and the current is about 300uA when the consumable state of the printer is paper clearance.

In the prior art, an adjustment mode of an input end current of a light reflection type sensor is a mode of switching a resistor, as shown in fig. 1, an input end of a light emitting source of the light reflection type sensor is respectively electrically connected to one end of three groups of resistors R1, R2 and R3 with different resistances, the other ends of the resistors R1, R2 and R3 are respectively electrically connected to three different ports of a main controller, that is, MCU _ IO1, MCU _ IO2 and MCU _ IO3, an output end of the light emitting source is grounded, an input end of a light receiver of the light reflection type sensor is electrically connected to a power supply end, an output end of the light receiver is grounded through a shunt resistor, when the main controller determines that a current voltage value is not within a standard voltage range of the photoelectric sensor and needs to be compensated, a resistance value corresponding to a compensation voltage needs to be determined after calculating a compensation voltage between the current voltage value and the standard voltage range of the photoelectric sensor, for example, when the resistance value corresponding to the compensation voltage is the resistance value is the resistor R1, the main controller outputs a level signal through the port of the MCU _ IO1, and obtains a level signal within the standard voltage range of the photoelectric sensor, and inputs the level signal into the photoelectric sensor. However, in this method, the resistance value is fixed, the adjustable range is limited, and it is not guaranteed that the current at the photoelectric sensor can reach the normal working range.

In view of the above-described problems, the present application will be described in detail below.

Fig. 2 is a schematic structural diagram of a device for detecting the state of a consumable of a label printer according to an embodiment of the present application, and as shown in the drawing, the device for detecting the state of a consumable of a label printer may include: a main controller 103, a Digital-to-Analog Converter (DAC) 101, an Analog-to-Digital Converter (ADC) 104, and a photosensor; the input end of the main controller 103 is electrically connected to the output end of the analog-to-digital converter 104, and is used for acquiring a first voltage acquired by the analog-to-digital converter 104; the output end of the main controller 103 is electrically connected to the input end of the digital-to-analog converter 101, and is configured to obtain a second voltage that makes the first voltage reach the standard voltage according to the first voltage and the standard voltage, and input the second voltage to the digital-to-analog converter 101; the photoelectric sensor comprises a light receiver 102, wherein the input end of an analog-to-digital converter 104 is electrically connected to the output end of the light receiver 102 and is used for collecting a first voltage at the output end of the light receiver 102; the output terminal of the digital-to-analog converter 101 is electrically connected to the input terminal of the light receiver 102, and is configured to output a second voltage to the input terminal of the light receiver 102. The input end of the luminous source of the photoelectric sensor is electrically connected with the power supply end, and the output end of the luminous source is electrically connected with the ground end.

During actual use, when the label printer is in a working state, the light emitting source of the photoelectric sensor is always in a conducting state, that is, a light signal is emitted towards the consumable of the label printer continuously, the light signal is reflected by the consumable of the label printer and then transmitted to the light receiver 102, the light receiver 102 converts the received light signal into an electrical signal, the main controller 103 collects a first voltage corresponding to the electrical signal through the analog-to-digital converter 104, judges the current state of the consumable of the label printer according to the first voltage, calculates a second voltage required by the first voltage to reach the standard voltage according to the standard voltage corresponding to the current state of the consumable of the label printer, and outputs the second voltage to the light receiver 102 of the photoelectric sensor through the digital-to-analog converter 101, so that the photoelectric sensor works on the standard voltage, for example, the state of the consumable of the label printer can be divided into: the printer comprises three states, namely 'no paper' indicating that no printer consumable exists at the moment, 'gap paper' indicating that the printer consumable is positioned between two printer consumables at the moment, and 'paper' indicating that the printer consumable exists at the moment, wherein the three states respectively correspond to voltage ranges as follows: paper-free-0V-0.5V, paper-clearance-1.1V-2.5V, paper-presence-1.9V-3.3V; the standard voltages corresponding to the three states are respectively: "no paper" -0.2V "," gap paper "-1.8V", "paper" -2.6V.

For example, when the collected first voltage is lower than 0.5V, it may be determined that the current status of the printer consumable is "no paper"; when the collected first voltage is 1.5V, the current state of the consumable items of the printer can be judged to be 'gap paper'; when the collected first voltage is 2.8V, the current state of the printer consumable is judged to be 'paper-in'.

Optionally, the device for detecting the consumable status of a label printer may be disposed in a label printer, or may be a separate device. When the device for detecting the status of consumables of a label printer is installed in the label printer, the main controller 103 may be the same processor as the processor of the label printer, or may be two separate processors, and is installed according to the actual requirements of those skilled in the art; when label printer consumptive material state detection device is the isolated plant, can be used for detecting whether quality such as quantity, consumptive material of printer consumptive material reach standard alone.

Alternatively, the main controller 103, the digital-to-analog converter 101 and the analog-to-digital converter 104 may be integrated into a Microcontroller (MCU).

Optionally, the input terminal of the analog-to-digital converter 104 may also be connected to the input terminal of the light source of the photoelectric sensor, for collecting the voltage at the input terminal of the light source.

Fig. 3 is a schematic circuit diagram of a consumable state detection device for a label printer according to an embodiment of the present disclosure, as shown in the figure, when a phototransistor in a photosensor is implemented, and the phototransistor is an NPN-type triode, an output terminal of a digital-to-analog converter 101 is connected to a collector of a light receptor 102 of the photosensor, an emitter of the light receptor 102 is connected to ground through a resistor R5, an emitter of the light receptor 102 is connected to an input terminal of an analog-to-digital converter 104, an output terminal of the analog-to-digital converter 104 is connected to an input terminal of a main controller 103, an output terminal of the main controller 103 is connected to an input terminal of the digital-to-analog converter 101, an input terminal of a light source of the photosensor is connected to a power source, and an output terminal of the light source is connected to ground through a resistor R6.

Fig. 4 is a schematic circuit diagram of a consumable status detecting device for a label printer according to an embodiment of the present disclosure, as shown in the figure, when a light receiver in a photoelectric sensor is a phototransistor and the phototransistor is an NPN-type triode, and the main controller 103, the digital-to-analog converter 101 and the analog-to-digital converter 104 are integrated in an MCU, since the MCU has an ADC port integrated with the analog-to-digital converter 104 and a DAC port integrated with the digital-to-analog converter 101, the DAC port is connected to a collector of the light receiver 102, an emitter of the light receiver 102 is connected to ground through a resistor R7, a collector of the light receiver 102 is connected to the ADC port of the MCU, an input end of a light source of the photoelectric sensor is connected to the ground, and an output end of the light source is connected to the ground through a resistor R8.

Fig. 5 is a schematic circuit diagram of a consumable status detecting device for a label printer according to an embodiment of the present disclosure, as shown in the figure, when a phototransistor in a photosensor is a PNP-type triode, an output terminal of a digital-to-analog converter 101 is connected to an emitter of a light receptor 102 of the photosensor, a collector of the light receptor 102 is connected to an input terminal of an analog-to-digital converter 104, the collector of the light receptor 102 is connected to a ground terminal through a resistor R9, an output terminal of the analog-to-digital converter 104 is connected to an input terminal of a main controller 103, an output terminal of the main controller 103 is connected to an input terminal of the digital-to-analog converter 101, an input terminal of a light source of the photosensor is connected to a power source terminal, and an output terminal of the light source is connected to the ground terminal through a resistor R10.

Among the above-mentioned label printer consumptive material state detection device, main control unit gathers the first voltage of the photic ware of photoelectric sensor through analog to digital converter's output end department, and then obtain the second voltage that makes first voltage reach standard voltage according to first voltage and standard voltage, and send the second voltage to photoelectric sensor's photic ware through digital to analog converter, so that photoelectric sensor work is on standard voltage, the relative ratio is in prior art, this application is through the voltage of real-time adjustment photoelectric sensor's photic ware, in order to adapt to the difference of different batches of photoelectric sensor on the response scope, improve the positioning accuracy to label printer consumptive material.

Fig. 6 is a schematic structural diagram of a device for detecting the state of a consumable of a label printer according to an embodiment of the present application, and as shown in the drawing, based on the device shown in fig. 2, the device for detecting the state of a consumable of a label printer may further include: the motor 105 and the main controller 103 are electrically connected to the motor 105, and are configured to output a control signal to drive the motor 105 to advance the current consumable of the label printer, so that the detection object of the photoelectric sensor changes from the current label to another label, for example, after the current status of the consumable is determined by using the current voltage value, the motor 105 is driven to rotate the reel, and when the value of the voltage value change exceeds the error threshold, the motor 105 is stopped being driven to rotate the reel, and then the status of the consumable at this time is determined.

Alternatively, the motor 105 may be the motor 105 in the label printer, or may be a separate motor 105.

Among the above-mentioned label printer consumptive material state detection device, can rotate so that the spool of printer consumptive material through setting up the motor to change current printer consumptive material state, realize the real-time detection of printer consumptive material.

Fig. 7 is a schematic structural view of a consumable state detection device of a label printer according to an embodiment of the present application, as shown in the figure, based on the device shown in fig. 4, the consumable state detection device of a label printer may further include a memory 106, and the main controller 103 is electrically connected to the memory 106 for storing the first voltage and/or the second voltage into the memory 106, that is, storing a voltage value obtained by the main controller 103 each time, and determining which consumable state the two consumable states are respectively according to voltages of two adjacent consumable states, so as to make a detection result more accurate.

In actual use, because the voltage ranges of the consumable states of the printer are overlapped, for example, the voltage range of the "paper clearance" state is 1.1V-2.5V, and the voltage range of the "paper existence" state is 1.9V-3.3V, when the acquired voltage shows a value between 1.9V-2.5V, the current consumable state cannot be accurately obtained, so that the accurate judgment needs to be performed by combining the two voltage values of the current consumable state and the next consumable state, for example, when the main controller 103 acquires that the voltage value Va of the current first consumable state is less than 0.5V, the current status of "no paper" can be directly determined, when the main controller 103 collects that the voltage value Va of the current first consumable state is greater than 0.5V, the voltage value Va of the first consumable state needs to be stored in the memory 106, a rotation instruction is sent to the motor 105, so that the motor 105 drives the reel of the printer consumable to rotate, until the voltage value Va substantially changes and becomes the voltage value Vb of the second consumable state, for example, when the voltage value Vb of the second consumable state is less than (Va-0.7) or greater than (Va + 0.7), the voltage value Va in the memory 106 is read, and Va and Vb are compared: when Va is larger than Vb, the printer consumable state corresponding to the voltage value Va of the first consumable state is indicated to be 'paper-present', and the printer consumable state corresponding to the voltage value Vb of the second consumable state is indicated to be 'paper-gap'; when Va < Vb, it indicates that the printer consumable state corresponding to the voltage value Va in the first consumable state is "paper clearance", and the printer consumable state corresponding to the voltage value Vb in the second consumable state is "paper present". Because of the sensing errors of the photoelectric sensor and the analog-to-digital converter or the influence of environmental factors, when Va does not substantially change, it is not considered that the first consumable state has changed, for example, when the current voltage value is greater than (Va-0.7) and less than (Va + 0.7), it is determined that the current consumable state is still the first consumable state.

Among the above-mentioned label printer consumptive material state detection device, when the main control unit can't accurately judge the printer consumptive material state this moment, through the voltage value of the first consumptive material state of memory storage present, the driving motor rotates the printer consumptive material spool, the voltage value of first consumptive material state takes place the substantial change until, when obtaining the voltage value of second consumptive material state, through the voltage value of comparison first consumptive material state and the voltage value of second consumptive material state, and then the printer consumptive material state that twice voltage value represented is accurately judged.

Fig. 8 is a schematic structural diagram of a consumable status detecting device of a label printer according to an embodiment of the present disclosure, and as shown in the drawing, based on the device shown in fig. 2, the consumable status detecting device of the label printer may further include an amplifying circuit 107, an input end of the amplifying circuit 107 is electrically connected to an output end of the digital-to-analog converter 101, and an output end of the amplifying circuit 107 is electrically connected to an input end of the photoreceptor 102.

In practical use, when the output current of the IO port of the main controller 103 is not large enough to drive the light receptor 102 of the photosensor, an amplifying circuit 107 needs to be connected between the output end of the digital-to-analog converter 101 and the input end of the light receptor 102, for example, the forward working current of the photosensor is 10mA, and when the maximum output current of the IO port of the main controller 103 is higher than 10mA, the amplifying circuit 107 is not needed; when the maximum output current of the IO port of the main controller 103 is lower than 10mA, the input end of the amplifying circuit 107 needs to be connected to the output end of the digital-to-analog converter 101, and the output end of the amplifying circuit 107 is electrically connected to the input end of the light receiver 102, so that the maximum output current of the IO port of the main controller 103 reaches the value of the working current of the photosensor.

Optionally, the amplifying circuit 107 includes at least one or a combination of the following: field effect transistor, triode, amplifier.

In the consumable state detection device of the label printer, the amplifying circuit is added at the output end of the digital-to-analog converter, so that the main controller with smaller output current of the IO port can drive the photoelectric sensor to work.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

In the description of embodiments of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present description in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present description.

In addition, functional units in the embodiments of the present specification may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (10)

1. A label printer consumable state detection device is characterized by comprising a main controller, a digital-to-analog converter, an analog-to-digital converter and a photoelectric sensor;

the input end of the main controller is electrically connected with the output end of the analog-to-digital converter and used for acquiring a first voltage acquired by the analog-to-digital converter;

the output end of the main controller is electrically connected with the input end of the digital-to-analog converter and used for obtaining a second voltage which enables the first voltage to reach the standard voltage according to the first voltage and the standard voltage and inputting the second voltage to the digital-to-analog converter;

the photoelectric sensor comprises a light receiver, wherein the input end of the analog-to-digital converter is electrically connected with the output end of the light receiver and is used for collecting the first voltage at the output end of the light receiver;

the output end of the digital-to-analog converter is electrically connected to the input end of the light receiver and is used for outputting the second voltage to the input end of the light receiver.

2. The apparatus of claim 1 further comprising a motor, said main controller being electrically connected to said motor for outputting control signals to drive said motor to advance the current label printer consumable.

3. The apparatus of claim 2, further comprising a memory, the host controller electrically coupled to the memory for storing the first voltage and/or the second voltage to the memory.

4. The apparatus according to claim 1, further comprising an amplifying circuit, wherein an input terminal of the amplifying circuit is electrically connected to an output terminal of the digital-to-analog converter, and an output terminal of the amplifying circuit is electrically connected to an input terminal of the light receiver.

5. The apparatus of claim 4, wherein the amplification circuit comprises at least one or a combination of: field effect transistor, triode, amplifier.

6. The apparatus of claim 1, wherein the light receptor is a phototransistor.

7. The apparatus of claim 6, wherein the phototransistor is an NPN transistor, a collector of the NPN transistor being electrically connected to the output of the digital-to-analog converter, and an emitter of the NPN transistor being electrically connected to the input of the analog-to-digital converter.

8. The apparatus of claim 6, wherein the phototransistor is a PNP transistor having an emitter electrically connected to the output of the digital to analog converter and a collector electrically connected to the input of the analog to digital converter.

9. The apparatus of claim 1, wherein the master controller, digital-to-analog converter, and analog-to-digital converter are integrated into one microcontroller.

10. A label printer comprising a label printer consumable status detection apparatus according to claim 1.

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