CN210820950U - Printer fault monitoring device and printer - Google Patents
Printer fault monitoring device and printer Download PDFInfo
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- CN210820950U CN210820950U CN201921640472.8U CN201921640472U CN210820950U CN 210820950 U CN210820950 U CN 210820950U CN 201921640472 U CN201921640472 U CN 201921640472U CN 210820950 U CN210820950 U CN 210820950U
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Abstract
The utility model discloses a printer fault monitoring device and a printer, which comprises a signal monitoring board used for connecting at least one power supply source corresponding to each ultraviolet curing light source of the printer; the signal monitoring board comprises at least one first signal sampling circuit; the first signal sampling circuit comprises a first sampling resistor and an operational amplifier; the first sampling resistor is connected in series with one end of the power supply; the positive input end of the operational amplifier is connected to one end of the first sampling resistor, the reverse input end of the operational amplifier is connected to the other end of the first sampling resistor, and the output end of the operational amplifier is connected to the reverse input end of the operational amplifier and the signal detection end of the signal monitoring board. The utility model discloses whether can in time detect power supply and break down, whether the ultraviolet curing light source through detecting power supply and whether failure diagnosis printer normally functions.
Description
Technical Field
The utility model relates to a printer technical field especially relates to a printer fault monitoring device and printer.
Background
UVLED (ultraviolet emitting diode) air brushing printer among the conventional art mostly controls opening and shutting and the light power of inside curing light source, and guarantees that other relevant circuits of curing light source normal operating are not monitored, in case the problem then can not in time know. At this time, the printer will continue printing, but the curing light source cannot work normally to play the curing function, so that the printed document is discarded. Therefore, the printer in the conventional technology is not fully functional, and other related fault problems related to the curing light source cannot be found in time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a printer fault monitoring device and printer to not enough in the conventional art.
In one embodiment, the utility model provides a printer fault monitoring device, which comprises a signal monitoring board for connecting at least one power supply source corresponding to each ultraviolet curing light source of the printer; the signal monitoring board comprises at least one first signal sampling circuit; the first signal sampling circuit comprises a first sampling resistor and an operational amplifier;
the first sampling resistor is connected in series with one end of the power supply; the positive input end of the operational amplifier is connected to one end of the first sampling resistor, the reverse input end of the operational amplifier is connected to the other end of the first sampling resistor, and the output end of the operational amplifier is connected to the reverse input end of the operational amplifier and the signal detection end of the signal monitoring board.
In one embodiment, the first signal sampling circuit further comprises a first signal conversion circuit;
the input end of the first signal conversion circuit is connected to the output end of the operational amplifier, and the conversion output end of the first signal conversion circuit is connected to the signal detection end.
In one embodiment, the signal monitoring board further comprises at least one second signal sampling circuit which is used for connecting a driving power supply to supply power to the ultraviolet curing light source; the second signal sampling circuit comprises a second sampling resistor;
two ends of the second sampling resistor are respectively connected to the positive electrode and the negative electrode of the driving power supply; one end of the second sampling resistor is connected to the signal detection end.
In one embodiment, the second signal sampling circuit further comprises a second signal conversion circuit;
the input end of the second signal conversion circuit is connected to one end of the second sampling resistor, and the conversion output end of the second signal conversion circuit is connected to the signal detection end.
In one embodiment, the signal detection terminal is further used for connecting to a main control board of the printer.
In one embodiment, the first signal conversion circuit includes a first photo coupler;
the input end of the first photoelectric coupler is connected to an external power supply and the output end of the operational amplifier respectively, and the output end of the first photoelectric coupler is connected to the signal detection end and the signal common end of the signal monitoring board respectively.
In one embodiment, the first signal conversion circuit further comprises a first triode and a first LED lamp;
the output end of the first photoelectric coupler is respectively connected to the base electrode of the first triode and the anode of the first LED lamp; the cathode of the first LED lamp is connected to the collector of the first triode; the emitter of the first triode is connected to the signal common terminal of the signal monitoring board.
In one embodiment, the second signal conversion circuit further comprises a second photo coupler;
the input end of the second photoelectric coupler is connected to one end of the second sampling resistor, and the output end of the second photoelectric coupler is connected to the signal detection end and the signal common end of the signal monitoring plate.
In one embodiment, the second signal conversion circuit further comprises a second triode and a second LED lamp;
the output end of the second photoelectric coupler is respectively connected to the anode of the second LED lamp and the base electrode of the second triode; the cathode of the second LED lamp is connected to the collector of the second triode; and the emitter of the second triode is connected to the signal common terminal of the signal monitoring board.
In one embodiment, the utility model also provides a printer, including printer fault monitoring device.
The utility model discloses a printer fault monitoring device and printer, the power supply who corresponds the ultraviolet curing light source of printer connects signal monitoring board, gathers power supply's output power signal through first sampling resistor and operational amplifier among the first signal sampling circuit, detects through the signal detection end of signal monitoring board from this. The utility model discloses can be with the power signal of power supply one end output through operational amplifier enlargies after first sampling resistor gathers, export the signal detection end to signal monitoring board reliably and steadily, from this, can in time detect whether power supply breaks down, further through detecting whether the ultraviolet curing light source of power supply failure judgement printer normally functions.
Drawings
In order to illustrate the technical solution of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention. Like components are numbered similarly in the various figures.
Fig. 1 shows a first schematic structural diagram of a printer failure monitoring device according to an embodiment of the present invention;
fig. 2 shows a second schematic structural diagram of the printer failure monitoring device according to the embodiment of the present invention;
fig. 3 shows a third structural schematic diagram of the printer failure monitoring device according to the embodiment of the present invention;
fig. 4 shows a fourth schematic structural diagram of the printer failure monitoring device according to the embodiment of the present invention;
fig. 5 shows a fifth schematic structural diagram of the printer failure monitoring device according to the embodiment of the present invention;
fig. 6 shows a sixth schematic structural diagram of the printer failure monitoring device according to the embodiment of the present invention.
Detailed Description
Hereinafter, various embodiments of the present invention will be described more fully. The present invention is capable of various embodiments and of being modified and varied therein. However, it should be understood that: there is no intention to limit the scope of the invention to the specific embodiments disclosed herein, but rather, the invention is to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the invention.
Hereinafter, the terms "includes" or "may include" used in various embodiments of the present invention indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to refer only to the particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combination of the foregoing.
In various embodiments of the present invention, the expression "at least one of a or/and B" includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The term "user" as used in various embodiments of the present invention may indicate a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present invention belong. Terms such as those defined in commonly used dictionaries will be interpreted as having a meaning that is the same as a contextual meaning in the related art and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein in various embodiments of the present invention.
Referring to fig. 1, in one embodiment, the present invention provides a printer failure monitoring device, including a signal monitoring board for connecting to at least one power supply corresponding to each uv-curing light source of a printer; the signal monitoring board comprises at least one first signal sampling circuit 110; the first signal sampling circuit comprises 110 a first sampling resistor R1 and an operational amplifier U1;
the first sampling resistor R1 is connected in series at one end of the power supply; the positive input end of the operational amplifier U1 is connected to one end of the first sampling resistor R1, the negative input end of the operational amplifier U1 is connected to the other end of the first sampling resistor R1, and the output end of the operational amplifier U1 is connected to the negative input end of the operational amplifier U1 and the signal detection end 1# of the signal monitoring board.
The utility model discloses each ultraviolet curing light source supplies power through the power supply of a plurality of direct current in the printer, and power supply's quantity is according to the size decision of ultraviolet curing light source power. The corresponding first sampling resistor R1 can be connected in series at one end of the power supply, one end of the power supply can be a negative electrode or a positive electrode, the other end of the power supply is connected with the corresponding ultraviolet curing light source, specifically, under the normal working state of the power supply, the power supply can generate a very small voltage on the first sampling resistor R1 through the first sampling resistor R1, and the voltage signal is amplified and fed back to the inverting input end of the operational amplifier U1 after passing through the operational amplifier U1 and then output to the signal detection end 1# of the signal monitoring board in a stable amplification manner. When the power supply fails, no power passes through the first sampling resistor R1, and the output signal of the operational amplifier U1 is not detected by the signal detection terminal 1 #.
The embodiment of printer fault monitoring device connects the power supply that the ultraviolet curing light source of printer corresponds signal monitoring board, and the output signal source signal of power supply is gathered through first signal sampling circuit 110's first sampling resistance R1 and operational amplifier U1, and the signal detection end 1# of accessible signal monitoring board detects from this. The embodiment of the utility model provides a can be with the power signal of the first end output of power supply through the amplification of operational amplifier U1 after first sampling resistance R1 gathers, the signal detection end of output to signal monitoring board reliable and stable. Therefore, whether the power supply fails or not can be detected in time, and whether the ultraviolet curing light source of the printer operates normally or not is further judged by detecting whether the power supply fails or not.
In a specific embodiment, the first signal sampling circuit further comprises a first signal conversion circuit;
the input end of the first signal conversion circuit is connected to the output end of the operational amplifier, and the conversion output end of the first signal conversion circuit is connected to the signal detection end.
In order to facilitate the detection of the signal output by the operational amplifier and improve the detection precision of whether the power supply works normally, a first signal conversion circuit can be connected between the signal detection end and the operational amplifier. The first signal conversion circuit may include a relay or a photocoupler, and converts an output signal of the operational amplifier into a switching signal indicating on/off by the relay or the photocoupler, and when the power supply is normal, the branch to which the corresponding signal detection terminal is connected is in an on state, and when the power supply is failed, the branch to which the corresponding signal detection terminal is connected is in an off state.
The utility model discloses printer fault monitoring device, circuit structure is perfect, and the first signal conversion circuit that inserts improves the detection precision to power supply, is convenient for in time discover whether the power supply of printer breaks down to in time overhaul the printer and prevent simultaneously that the drawing from scrapping.
Referring to fig. 2, in a specific embodiment, the signal monitoring board further includes at least one second signal sampling circuit 210 for connecting a driving power supply to a driving power supply for supplying power to the uv curing light source; the second signal sampling circuit 210 includes a second sampling resistor R2;
two ends of the second sampling resistor R2 are respectively connected to the positive pole and the negative pole of the driving power supply; one end of the second sampling resistor R2 is connected to the signal detection terminal 2 #.
When the printer works, the corresponding relay is driven by the direct-current driving power supply, so that the corresponding relay controls the connected power supply to be conducted to supply power to the ultraviolet curing light source, and therefore the corresponding power supply cannot supply power normally when the driving power supply fails. When the driving power supply works normally, a stable voltage is generated on the second sampling resistor R2, and it can be detected whether the driving power supply is normal through the signal detection terminal 2 #.
The utility model discloses printer fault monitoring device, it is multiple functional, can monitor the drive power supply of printer, can prevent that the fault monitoring function singleness from leading to the emergence of the condition that can not in time discover the printer trouble.
In a specific embodiment, the second signal sampling circuit further comprises a second signal conversion circuit;
the input end of the second signal conversion circuit is connected with one end of the second sampling resistor, and the conversion output end of the second signal conversion circuit is connected with the signal detection end.
In order to facilitate the detection of the signal output by the second sampling resistor and improve the detection precision of whether the driving power supply normally works, a second signal conversion circuit can be connected between the corresponding signal detection end and the second sampling resistor. The second signal conversion circuit may include a relay or a photoelectric coupler, and converts an output signal of the second sampling resistor into a switching signal indicating on/off through the relay or the photoelectric coupler, and when the driving power supply is normal, the branch circuit to which the corresponding signal detection terminal is connected is in an on state, and otherwise, the branch circuit is in an off state.
The utility model discloses printer fault monitoring device, circuit structure is perfect, and the second signal conversion circuit that inserts improves drive power supply's detection precision, is convenient for in time discover whether the drive power supply of printer breaks down to in time overhaul the troubleshooting to the printer, prevent that the drawing from scrapping simultaneously.
Referring to fig. 3, in one embodiment, the signal detection terminal is also used to connect to a printer main control board 310.
The utility model discloses a printer fault monitoring device, printer main control board 310 are connected to the signal detection end of signal monitoring board 320. When the printer main control board 310 monitors that a power supply or a driving power supply of a certain path has a fault through the signal detection terminal, it may send a corresponding fault signal and control the printer to stop printing.
The utility model discloses printer fault monitoring device, circuit structure is simple, and when the power supply trouble of ultraviolet curing light source was monitored to the signal detection end that the printer main control board passes through the signal monitoring board, the printer of can in time controlling stopped printing, prevented to continue to carry out and print and lead to the paper extravagant, can in time take the troubleshooting simultaneously.
Referring to fig. 4, in one particular embodiment, the first signal conversion circuit includes a first optocoupler U3;
the input end of the first photoelectric coupler U3 is connected to the external power VCC and the output end of the operational amplifier, and the output end of the first photoelectric coupler U3 is connected to the signal detection end 1# and the signal common end sin of the signal monitoring board.
The input end of the first photoelectric coupler U3 comprises an anode and a cathode, the anode of the first photoelectric coupler U3 is connected with an external power supply VCC, and the cathode of the first photoelectric coupler U3 is used as the input end of the first signal conversion circuit and is connected with the output end of the operational amplifier. The output end of the first photoelectric coupler U3 comprises a collector and an emitter, the collector of the first photoelectric coupler U3 is used as the conversion output end of the first signal conversion circuit and is connected with the signal detection end 1#, and the emitter of the first photoelectric coupler U3 is connected with the signal common end sin of the signal monitoring board.
When the power supply of the ultraviolet curing light source of the printer supplies power normally, the operational amplifier outputs a signal to enable the first photoelectric coupler U3 to be conducted, the signal detection end 1# of the signal monitoring plate is conducted along a corresponding loop from the first photoelectric coupler U3 to the signal common end sin of the signal monitoring plate, and otherwise, the signal detection end is disconnected.
The utility model discloses printer fault monitoring device, first signal sampling circuit include first optoelectronic coupler U3, convert the signal conversion of operational amplifier output into switching signal, and then whether accessible signal monitoring board's signal detection end monitoring power supply has the trouble. The utility model discloses simple structure is with low costs, and detects the precision height.
Referring to fig. 4, in a specific embodiment, the first signal conversion circuit further includes a first transistor Q1 and a first LED light D1;
the output end of the first photoelectric coupler U3 is respectively connected to the base of the first triode Q1 and the anode of the first LED lamp D1; the cathode of the first LED lamp D1 is connected to the collector of the first triode Q1; the emitter of the first transistor Q1 is connected to the signal common sin of the signal monitoring board.
The input terminal of the first photocoupler U3 includes a cathode and an anode, and the output terminal includes a collector and an emitter. Specifically, the anode of the first LED lamp D1 is connected to the emitter of the first photocoupler U3, the cathode of the first LED lamp D1 is connected to the collector of the first triode Q1, the base of the first triode Q1 is connected to the collector of the first photocoupler U3, and the emitter of the first triode Q1 is connected to the signal common sin of the signal monitoring board.
When the power supply of the ultraviolet curing light source of the printer normally supplies power, the first photoelectric coupler U3 is conducted, the signal detection end 1# is conducted to a loop of the signal common end sin along the first photoelectric coupler U3, the first LED lamp D1 and the first triode Q1, and at the moment, the first LED lamp D1 is lightened. When the power supply fails, the circuit is opened, and the first LED lamp D1 is turned off.
The utility model discloses printer fault monitoring device, whether power supply breaks down is judged directly perceivedly to bright going out of the first LED lamp D1 of accessible to in time carry out troubleshooting. Further, a complete loop is formed by the first triode Q1 and the first photoelectric coupler U3, and damage to components and parts caused by reverse power supply is prevented. The utility model discloses can improve printer fault monitoring device's reliability, ensure when monitoring power supply operational aspect, ensure circuit steady operation.
As a preferred embodiment, referring to fig. 4, in order to make the first signal conversion circuit operate stably, voltage dividing resistors R5 and R6 may be connected between the base of the first transistor Q1 and the collector of the first photo coupler U3, a resistor R4 may be connected between the emitter of the first photo coupler U3 and the first LED lamp D1, and a resistor R3 may be connected to the anode of the first photo coupler U3.
Referring to fig. 5, in a specific embodiment, the second signal conversion circuit further includes a second photo coupler U4;
the input end of the second photoelectric coupler U4 is connected to one end of the second sampling resistor, and the output end of the second photoelectric coupler U4 is connected to the signal detection end 2# and the signal common end sin of the signal monitoring board.
The input terminal of the second photocoupler U4 includes an anode and a cathode, and the output terminal includes a collector and an emitter. Specifically, the anode and the cathode of the second photocoupler U4 are used as the input end of the second signal conversion circuit and connected to one end of the second sampling resistor, the collector of the second photocoupler U4 is used as the conversion output end of the second signal conversion circuit and connected to the signal detection end 2#, and the emitter of the second photocoupler U4 is connected to the signal common end sin of the signal monitoring board.
When the drive power supply of the ultraviolet curing light source of the printer supplies power normally, the second sampling resistor outputs a signal to enable the second photoelectric coupler U4 to be conducted, the signal detection end 2# of the signal monitoring plate is conducted along a corresponding loop from the second photoelectric coupler U4 to the signal public end sin of the signal monitoring plate, and otherwise, the signal monitoring plate is disconnected.
The utility model discloses printer fault monitoring device, second signal sampling circuit include second optoelectronic coupler U4, convert the signal conversion of second sampling resistance output into switching signal, and then whether accessible signal monitoring board's signal detection end monitoring drive power supply has the trouble. The utility model discloses simple structure is with low costs, and detects the precision height.
Referring to fig. 5, in a specific embodiment, the second signal conversion circuit further includes a second transistor Q2 and a second LED light D2;
the output end of the second photoelectric coupler U4 is respectively connected to the anode of the second LED lamp D2 and the base electrode of the second triode Q2; the cathode of the second LED lamp D2 is connected to the collector of the second triode Q2; the emitter of the second transistor Q2 is connected to the signal common sin of the signal monitor board.
The input terminal of the second opto-electric coupler U4 includes an anode and a cathode, and the output terminal includes a collector and an emitter. The anode of the second LED lamp D2 is connected with the emitter of the second photoelectric coupler U4, the cathode of the second LED lamp D2 is connected with the collector of the second triode Q2, the base of the second triode Q2 is connected with the collector of the second photoelectric coupler U4, and the emitter of the second triode Q2 is connected with the signal common end sin of the signal monitoring board.
When the power supply of the ultraviolet curing light source of the printer normally supplies power, the second photoelectric coupler U4 is conducted, the signal detection end 2# is conducted to a loop of the signal common end sin along the second photoelectric coupler U4, the second LED lamp D2 and the second triode Q2, and at the moment, the second LED lamp D2 is lightened. When the power supply fails, the circuit is opened, and the second LED lamp D2 is turned off.
The utility model discloses printer fault monitoring device, whether driving power supply breaks down is judged directly perceivedly to bright going out of accessible second LED lamp D2 to in time carry out troubleshooting. Further, a complete loop is formed by the second triode Q2 and the second photoelectric coupler U4, and damage to components and parts caused by reverse power supply is prevented. The utility model discloses can improve printer fault monitoring device's reliability, ensure when monitoring power supply operational aspect, ensure circuit steady operation.
As a preferred embodiment, referring to fig. 5, in order to make the second signal conversion circuit operate stably, voltage dividing resistors R7 and R9 are connected between the base of the second transistor Q2 and the collector of the second photo coupler U4, a resistor R8 is connected between the emitter of the second photo coupler U4 and the second LED lamp D2, and a filter capacitor C1 is connected to the anode of the second photo coupler U4.
In one embodiment, the utility model also provides a printer, including printer fault monitoring device.
It should be noted that the printer fault monitoring device of the embodiment of the present invention is the same as the printer fault monitoring device in each of the above embodiments, and is not described herein again.
The utility model discloses the printer, the power supply that corresponds the ultraviolet curing light source of printer connects signal monitoring board, gathers power supply's output power signal through first sampling resistor and operational amplifier in the first signal sampling circuit, and the signal detection end through signal monitoring board detects from this. The utility model discloses can be with the power signal of power supply one end output through operational amplifier enlargies after first sampling resistor gathers, export the signal detection end to signal monitoring board reliably and steadily, from this, can in time detect whether power supply breaks down, further through detecting whether the ultraviolet curing light source of power supply failure judgement printer normally operates.
Referring to fig. 3 and 6, as a preferred embodiment, the embodiment of the present invention is applied to an inkjet printer, an ink pattern ejected from the inkjet printer is to be cured by two UV curing light sources VULED, one is installed on the left side of the nozzle and called as a left UVLED360, and the other is installed on the right side of the nozzle and called as a right UVLED350, and the inkjet printer is powered by two relays, such as two 24V dc driving power supplies, a left UVLED driving power supply 330 and a right UVLED driving power supply 340, and then the two relays drive the power supply 370 to supply power to the UVLE during printing. Each UVLED corresponds to at least one power supply 370, and each power supply 370 converts AV220V ac power to dc power, for example, five power supplies for each UVLED. Further, the printer main control panel 310 is further connected with a buzzer and a display panel, when the printer suddenly has a power supply failure, a driving power failure, a non-bright UVLED lamp, a loose aviation plug and other failures in the printing process, the printer main control panel 310 can control the buzzer to give out a buzzing alarm sound, display a corresponding failure code on the display panel, and control the printer to stop printing.
Furthermore, the driving power supply corresponding to the uv led of the uv curing light source is connected to the access terminal X2 of a second signal sampling circuit, and one end of each power supply is correspondingly connected to the access terminal X1 of the first signal sampling circuit. The connection terminal X3 of the signal monitoring board has at least one signal detection terminal 1# corresponding to a first signal sampling circuit, at least one signal detection terminal 2# corresponding to a second signal sampling circuit, and a signal common terminal sin. Each signal detection end 1# and the corresponding first signal sampling circuit and the corresponding signal common end sin which are connected form a complete loop, and are used for judging whether the power supply is normally powered through the signal detection end 1# and each signal detection end 2# and the corresponding second signal sampling circuit and the corresponding signal common end sin which are connected form a complete loop, and are used for judging whether the drive power supply is normally powered through the signal detection end 2 #.
Specifically, a positive voltage input end of the operational amplifier U1 is connected to an external power source such as DC24V, and in order to ensure that the operational amplifier U1 outputs a stable signal, a current limiting resistor R13 is connected to the positive voltage input end, a filter capacitor C2 is connected to the output end, and voltage dividing resistors R10 and R11 are connected between the output end and the inverting input end of the operational amplifier U1. Further, the external power source connected to the first photocoupler U3 is a direct current DC 24V. In order to perform an isolation function so that the circuit on the output side is not affected when the input side is in a problem, an isolation element such as a transistor Q3 or a diode is connected between the cathode of the first photocoupler U3 and the output terminal of the operational amplifier U1. Further, in order to prevent the reverse power supply from affecting the second signal sampling circuit and ensure that the second sampling resistor R2 collects a stable and reliable power supply voltage signal, one end of the second sampling resistor R2 is connected to the zener diode D3, and the other end of the second sampling resistor is connected to the diode D4.
The utility model discloses printer fault monitoring device and printer, circuit structure is perfect, can in time monitor the trouble problem of relevant printers such as power supply, drive power supply effectively.
Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.
Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The sequence numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenario. The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.
Claims (10)
1. A printer fault monitoring device is characterized by comprising a signal monitoring board, a signal processing board and a control board, wherein the signal monitoring board is used for connecting at least one power supply corresponding to each ultraviolet curing light source of a printer; the signal monitoring board comprises at least one first signal sampling circuit; the first signal sampling circuit comprises a first sampling resistor and an operational amplifier;
the first sampling resistor is connected in series with one end of the power supply; the positive input end of the operational amplifier is connected to one end of the first sampling resistor, the reverse input end of the operational amplifier is connected to the other end of the first sampling resistor, and the output end of the operational amplifier is connected to the reverse input end of the operational amplifier and the signal detection end of the signal monitoring board.
2. The printer fault monitoring device of claim 1, wherein the first signal sampling circuit further comprises a first signal conversion circuit;
the input end of the first signal conversion circuit is connected to the output end of the operational amplifier, and the conversion output end of the first signal conversion circuit is connected to the signal detection end.
3. The printer fault monitoring device of claim 1, wherein the signal monitoring board further comprises at least one second signal sampling circuit for connecting a driving power supply for driving the power supply to supply power to the ultraviolet curing light source; the second signal sampling circuit comprises a second sampling resistor;
two ends of the second sampling resistor are respectively connected to the positive electrode and the negative electrode of the driving power supply; one end of the second sampling resistor is connected to the signal detection end.
4. The printer fault monitoring device of claim 3, wherein the second signal sampling circuit further comprises a second signal conversion circuit;
the input end of the second signal conversion circuit is connected to the one end of the second sampling resistor, and the conversion output end of the second signal conversion circuit is connected to the signal detection end.
5. The printer fault monitoring device of claim 1, wherein the signal detection terminal is further configured to connect to a printer main control board.
6. The printer fault monitoring device of claim 2, wherein the first signal conversion circuit includes a first opto-coupler;
the input end of the first photoelectric coupler is connected to an external power supply and the output end of the operational amplifier respectively, and the output end of the first photoelectric coupler is connected to the signal detection end and the signal common end of the signal monitoring plate respectively.
7. The printer fault monitoring device of claim 6, wherein the first signal conversion circuit further comprises a first triode and a first LED lamp;
the output end of the first photoelectric coupler is respectively connected to the base electrode of the first triode and the anode of the first LED lamp; the cathode of the first LED lamp is connected to the collector of the first triode; and the emitter of the first triode is connected to the signal common end of the signal monitoring board.
8. The printer fault monitoring device of claim 4, wherein the second signal conversion circuit further comprises a second opto-coupler;
the input end of the second photoelectric coupler is connected to one end of the second sampling resistor, and the output end of the second photoelectric coupler is connected to the signal detection end and the signal common end of the signal monitoring plate.
9. The printer fault monitoring device of claim 8, wherein the second signal conversion circuit further comprises a second triode and a second LED light;
the output end of the second photoelectric coupler is respectively connected to the anode of the second LED lamp and the base electrode of the second triode; the cathode of the second LED lamp is connected to the collector of the second triode; and the emitter of the second triode is connected to the signal common end of the signal monitoring board.
10. A printer comprising the printer malfunction monitoring device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640472.8U CN210820950U (en) | 2019-09-27 | 2019-09-27 | Printer fault monitoring device and printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921640472.8U CN210820950U (en) | 2019-09-27 | 2019-09-27 | Printer fault monitoring device and printer |
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| CN210820950U true CN210820950U (en) | 2020-06-23 |
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| CN201921640472.8U Active CN210820950U (en) | 2019-09-27 | 2019-09-27 | Printer fault monitoring device and printer |
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| Country | Link |
|---|---|
| CN (1) | CN210820950U (en) |
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2019
- 2019-09-27 CN CN201921640472.8U patent/CN210820950U/en active Active
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