Fault diagnosis device for high pressure system of thickness gauge

Abstract

The application discloses a kind of fault diagnosis devices of thickness gauge high pressure system.The fault diagnosis device includes single-chip microcomputer (21), microcomputer display screen (22), high voltage regulating circuit (23), current regulating circuit (24) and interface module (25);Single-chip microcomputer can send control operating parameter to high voltage control unit by the serial interface (12) of high voltage control unit;Single-chip microcomputer can send control signal to high voltage control unit;High voltage regulating circuit can adjust the high voltage feedback voltage of high voltage control unit;Current regulating circuit can adjust the tube current feedback voltage of high voltage control unit;Operating microcomputer display screen sends instruction to high voltage control unit, controls the operation of high voltage control unit, receives the feedback data of high voltage control unit, and shows the feedback data of high voltage control unit on microcomputer display screen.The fault diagnosis device is used to diagnose the high pressure system of thickness gauge, and the fault point in high pressure system can be quickly determined.

Description

TECHNICAL FIELD

[0001] The application relates to an industrial detection diagnosis device, in particular to a high-voltage system fault diagnosis device of a thickness gauge. BACKGROUND

[0002] At present, a thickness gauge is equipped on a hot rolling and cold rolling production line, the thickness gauge measures the thickness of a rolled strip steel by using X-rays, so that the thickness gauge can realize accurate measurement and quality control of the strip steel, and the thickness gauge as key equipment for thickness control of a rolling line plays an important role in product quality control.

[0003] Referring to Figure 1 , the existing thickness gauge is composed of a plurality of electrical components, specifically, the thickness gauge comprises a control system server, a high-voltage control unit, a high-voltage generator and an X-ray tube.

[0004] The control system server is used for operating the high-voltage control unit and adjusting parameters of the high-voltage control unit through a serial port. The high-voltage control unit controls the high-voltage generator, and the high-voltage control unit contains all necessary control systems to stabilize the X-ray tube, and is equipped with two serial interfaces for adjustment control. The high-voltage generator is used to generate high voltage, and is controlled by the high-voltage control unit and feeds back a reference value required by the high-voltage control unit. The X-ray tube provides X-rays, and is connected with the high-voltage generator through a high-voltage cable.

[0005] Referring to Figure 2 , the high-voltage control unit is provided with an interface panel, and the interface panel is provided with seven different interfaces, namely a power supply interface 11, a serial interface 12, an actual analog value interface 13, a signal input interface 14, a signal output interface 15, a high-voltage generator connection signal interface 16 and a high-voltage generator connection power supply interface 17.

[0006] The power supply interface 11 is connected with a 220V alternating power supply, so as to provide power supply for the high-voltage control unit.

[0007] The serial interface 12 is connected with the control system server through a data transmission cable, and the control system server can send control operation parameters such as a filament current setting value, a chopper voltage setting value, a high-voltage setting value and a tube current setting value to the high-voltage control unit through the serial interface 12, so as to control the high-voltage control unit to generate required high voltage and current.

[0008] The actual analog value interface 13 is used for measuring analog values of high voltage, tube current, chopper voltage and filament current, and is not externally connected in actual work. The actual analog value interface 13 is not related to the fault diagnosis device of the embodiment.

[0009] The actual analog value interface 13 is used for measuring the analog values of high voltage, tube current, chopper voltage and filament current, and in actual work, it can not be externally connected.

[0010] The signal input interface 14 and the signal output interface 15 are both connected with external terminals through signal cables, the high voltage control unit signal input interface 14 receives external enabling signals such as external emergency stop, high voltage enabling signal and the like, and the high voltage control unit signal output interface 15 sends high voltage on, system health and other state signals to the outside.

[0011] The high voltage generator connection signal interface 16 is connected with the high voltage generator through signal cables, and the high voltage control unit can receive high voltage measurement values and tube current measurement values of the high voltage generator through the high voltage generator connection signal interface 16.

[0012] The high voltage generator connection power supply interface 17 is connected with the high voltage generator through power cables, and is used for providing power for the high voltage generator, wherein two cables provide power for the high voltage transformer, and the other three cables provide power for the filament transformer.

[0013] The working environment of the current thickness gauge is relatively harsh, so failures often occur, and after the failure occurs, it is often a time-consuming work to find the fault point, and the operating personnel need to go to the scene to check each electrical equipment to find the fault point, the efficiency of finding the fault point is very low, which greatly affects the normal operation of the production line. SUMMARY

[0014] The purpose of the present application is to provide a thickness gauge high voltage system fault diagnosis device, which can quickly determine the fault point in the high voltage system by diagnosing the high voltage system of the thickness gauge.

[0015] In order to achieve the above technical purpose, the present application adopts the following technical scheme:

[0016] The application discloses a kind of thickness gauge high pressure system fault diagnosis device, the high pressure system includes high voltage control unit, the high voltage control unit has serial interface, signal output interface, high voltage generator connection signal interface and high voltage generator connection power interface;The fault diagnosis device includes single-chip microcomputer, microcomputer display screen, high voltage regulating circuit, current regulating circuit and interface module;The microcomputer display screen is connected with single-chip microcomputer communication;Single-chip microcomputer is connected with the serial interface of high voltage control unit by interface module, and single-chip microcomputer can send control operating parameter to high voltage control unit by the serial interface of high voltage control unit;Single-chip microcomputer is connected with the signal output interface of high voltage control unit by interface module, and single-chip microcomputer can send high voltage opening and closing instruction to high voltage control unit;The sampling end of high voltage regulating circuit is connected with the high voltage generator connection power interface of high voltage control unit by interface module, and the output end of high voltage regulating circuit is connected with the high voltage generator connection signal interface of high voltage control unit by interface module, and the high voltage regulating circuit can adjust the high voltage feedback voltage of high voltage control unit;The sampling end of current regulating circuit is connected with the high voltage generator connection power interface of high voltage control unit by interface module, and the output end of current regulating circuit is connected with the high voltage generator connection signal interface of high voltage control unit by interface module, and the current regulating circuit can adjust the tube current feedback voltage of high voltage control unit;Software system for realizing diagnostic operation is arranged in single-chip microcomputer, based on the software system, microcomputer display screen can send instruction to high voltage control unit, control the operation of high voltage control unit, receive the feedback data of high voltage control unit, and display the feedback data of high voltage control unit on microcomputer display screen.

[0017] Further, the high voltage control unit has signal input interface;The fault diagnosis device further includes pin connection module;The pin connection module is connected with the signal input interface of high voltage control unit by interface module, and the pin connection module can short pin to the signal input interface of high voltage control unit and supply pin 24V voltage as high voltage enable.

[0018] Further, the high voltage regulating circuit includes load resistor, mutual inductor, sampling resistor, AC / DC effective value converter and amplifier;The sampling end of high voltage regulating circuit is connected to the input end of mutual inductor, the load resistor is arranged at the input end of mutual inductor, the inverter voltage of high voltage control unit is connected to the sampling end of high voltage regulating circuit, the inverter voltage is collected through mutual inductor and sampling resistor, the inverter voltage is converted by AC / DC effective value converter to obtain effective sampling voltage, and the effective sampling voltage is amplified by amplifier, and the voltage obtained after amplification is sent to the output end of high voltage regulating circuit as high voltage feedback voltage.

[0019] Further, the high-voltage regulating circuit further comprises a potentiometer P3, which is arranged between the input and output of the amplifier.

[0020] Further, the fault diagnosis device further comprises a S1 toggle switch; the high-voltage regulating circuit further comprises a potentiometer P1; the output of the high-voltage regulating circuit and the output of the amplifier are both connected to the S1 toggle switch, one end of the potentiometer P1 is grounded, and the other end is connected to the S1 toggle switch; toggling the S1 toggle switch can control the output of the high-voltage regulating circuit to be connected to the output of the amplifier or to be grounded through the potentiometer P1.

[0021] Further, the current regulating circuit comprises a load resistor, a mutual inductor, a sampling resistor, an AC / DC effective value converter and an amplifier; the sampling end of the current regulating circuit is connected to the input of the mutual inductor, the load resistor is arranged at the input of the mutual inductor, the filament current of the high-voltage control unit is connected to the sampling end of the current regulating circuit, the filament current is collected through the mutual inductor and the sampling resistor, the collected filament current is converted into an effective value by the AC / DC effective value converter to obtain an analog tube current voltage, and the analog tube current voltage is amplified by the amplifier to obtain a voltage as a tube current feedback voltage and send to the output of the current regulating circuit.

[0022] Further, the current regulating circuit further comprises a potentiometer P4 and a potentiometer P5, the potentiometer P4 is arranged between the input and output of the amplifier, and the potentiometer P5 is arranged at the input of the amplifier.

[0023] Further, the fault diagnosis device further comprises a S1 toggle switch; the current regulating circuit further comprises a potentiometer P2; the output of the current regulating circuit and the output of the amplifier are both connected to the S1 toggle switch, one end of the potentiometer P2 is grounded, and the other end is connected to the S1 toggle switch; toggling the S1 toggle switch can control the output of the current regulating circuit to be connected to the output of the amplifier or to be grounded through the potentiometer P2.

[0024] Further, the control interface of the microcomputer display screen is provided with an alarm area, which is used for displaying the fault alarm code fed back by the high-voltage control unit.

[0025] Further, the control interface of the microcomputer display screen is provided with a service mode check item.

[0026] The fault diagnosis device of the application comprises a single-chip microcomputer, a microcomputer display screen, a high-voltage regulating circuit and a current regulating circuit, the single-chip microcomputer can send control operation parameters to the high-voltage control unit, the high-voltage regulating circuit can regulate the high-voltage feedback voltage of the high-voltage control unit, the current regulating circuit can regulate the tube current feedback voltage of the high-voltage control unit, the single-chip microcomputer is provided with a software system for realizing diagnosis operation, based on the software system, the microcomputer display screen can send instructions to the high-voltage control unit to control the operation of the high-voltage control unit, receive feedback data of the high-voltage control unit and display the feedback data of the high-voltage control unit on the microcomputer display screen. When the high-voltage system of the thickness gauge fails, the fault diagnosis device of the application is used to diagnose the high-voltage system, and the diagnosis result is displayed on the microcomputer display screen.

[0027] The fault diagnosis device of the application has the advantages that the high-voltage system of the thickness gauge is diagnosed by using the fault diagnosis device of the application, the diagnosis result is displayed on the microcomputer display screen, the operator can quickly determine the fault point in the high-voltage system according to the diagnosis result, the efficiency of finding the fault point is greatly improved, the normal operation of the production line is effectively ensured, and the loss caused by shutdown is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is an electrical configuration schematic diagram of the thickness gauge involved in the application;

[0029] Figure 2 It is a schematic diagram of an interface panel of the high-voltage control unit;

[0030] Figure 3 It is an electrical configuration schematic diagram of the fault diagnosis device of the high-voltage system of the thickness gauge of the application;

[0031] Figure 4 It is a schematic diagram of the operation interface of the microcomputer display screen in the fault diagnosis device of the application;

[0032] Figure 5 It is an electrical configuration schematic diagram of the high-voltage regulating circuit in the fault diagnosis device of the application;

[0033] Figure 6 It is an electrical configuration schematic diagram of the current regulating circuit in the fault diagnosis device of the application.

[0034] In the diagram: 11-Power interface, 12-Serial interface, 13-Actual analog value interface, 14-Signal input interface, 15-Signal output interface, 16-High voltage generator connection signal interface, 17-High voltage generator connection power interface, 21-Microcontroller, 22-Microcomputer display screen, 23-High voltage regulation circuit, 24-Current regulation circuit, 25-Interface module, 251-X2 interface, 252-X4 interface, 253-X7 interface, 254-X5 interface, 255-X6 interface, 256-S1 toggle switch, 257-T1 rotary switch, 258-T2 rotary switch, 259-T3 rotary switch, 26-Pin connector module. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0036] This embodiment provides a fault diagnosis device for a high-voltage system of a thickness gauge.

[0037] The fault diagnosis device of this embodiment functions as follows: when a fault occurs in the high-voltage system of the thickness gauge, the fault diagnosis device of this embodiment is used to diagnose the high-voltage system to determine the location of the fault. Using this fault diagnosis device to diagnose the high-voltage system of the thickness gauge enables rapid identification of the fault location within the high-voltage system.

[0038] The thickness gauge described in this embodiment is used to measure the thickness of hot-rolled plates, such as... Figure 1 As shown, the thickness gauge is composed of multiple electrical components, specifically including: a control system server, a high-voltage control unit, a high-voltage generator, and an X-ray tube. The high-voltage control unit, high-voltage generator, and X-ray tube together constitute the high-voltage system of the thickness gauge. For details regarding these electrical components, please refer to the background section.

[0039] See Figure 2 The high-voltage control unit has a power interface 11, a serial interface 12, an actual analog value interface 13, a signal input interface 14, a signal output interface 15, a high-voltage generator connection signal interface 16, and a high-voltage generator connection power interface 17. For details about these interfaces, please refer to the background section.

[0040] In this embodiment, the high-voltage control unit is model RSG100, the high-voltage generator is model HSG101 or HSG160, and the X-ray tube is model MXR161-W or MXR226-W.

[0041] See Figure 3The fault diagnosis device of the embodiment comprises a single-chip microcomputer 21, a microcomputer display screen 22, a high-voltage regulating circuit 23, a current regulating circuit 24, a pin connection module 26 and an interface module 25.

[0042] The single-chip microcomputer 21, the microcomputer display screen 22, the high-voltage regulating circuit 23, the current regulating circuit 24 and the pin connection module 26 are arranged in an electrical cabinet, and the interface module 25 is arranged on the surface of the electrical cabinet to facilitate cable connection with the high-voltage control unit.

[0043] Three knob switches, one toggle switch and five interfaces are arranged on the interface module 25.

[0044] The three knob switches arranged on the interface module 25 are respectively a T1 knob switch 257, a T2 knob switch 258 and a T3 knob switch 259 (the specific functions of which are described in detail below).

[0045] The one toggle switch arranged on the interface module 25 is a S1 toggle switch 256 (the specific function of which is described in detail below).

[0046] The five interfaces arranged on the interface module 25 are respectively an X2 interface 251, an X4 interface 252, an X7 interface 253, an X5 interface 254 and an X6 interface 255.

[0047] The interfaces on the interface module 25 are used for interface connection with the high-voltage control unit.

[0048] Specifically,

[0049] The X2 interface 251 is a serial interface, which corresponds to the serial interface 12 of the high-voltage control unit.

[0050] The X4 interface 252 is a digital quantity input signal interface, which corresponds to the signal input interface 14 of the high-voltage control unit.

[0051] The X7 interface 253 is a power interface, which corresponds to the high-voltage generator connection power supply interface 17 of the high-voltage control unit.

[0052] The X5 interface 254 is a digital quantity output signal interface, which corresponds to the signal output interface 15 of the high-voltage control unit.

[0053] The X6 interface 255 is a high-voltage and tube current feedback signal interface, which corresponds to the high-voltage generator connection signal interface 16 of the high-voltage control unit.

[0054] It should be noted that the correspondence described herein refers to the need to connect the corresponding interfaces together with corresponding cables when using the fault diagnosis device of the embodiment.

[0055] Specifically,

[0056] The X2 interface 251 is connected with the serial interface 12 of the high-voltage control unit through a serial communication cable.

[0057] The X4 interface 252 is connected with the signal input interface 14 of the high-voltage control unit through a signal cable.

[0058] The X7 interface 253 is connected with the power supply interface 17 of the high-voltage generator of the high-voltage control unit through a power cable.

[0059] The X5 interface 254 is connected with the signal output interface 15 of the high-voltage control unit through a signal cable.

[0060] The X6 interface 255 is connected with the signal interface 16 of the high-voltage generator of the high-voltage control unit through a signal cable.

[0061] Inside the electrical cabinet, a serial communication port of the single-chip microcomputer 21 is connected with the X2 interface 251.

[0062] A digital signal port of the single-chip microcomputer 21 is connected with the X5 interface 254.

[0063] A sampling end of the high-voltage regulating circuit 23 is connected with the X7 interface 253.

[0064] An output end of the high-voltage regulating circuit 23 is connected with the X6 interface 255.

[0065] A sampling end of the current regulating circuit 24 is connected with the X7 interface 253.

[0066] An output end of the current regulating circuit 24 is connected with the X6 interface 255.

[0067] The pin connection module 26 is arranged on the X4 interface 252 through electrical connection.

[0068] That is,

[0069] The single-chip microcomputer 21 is connected with the serial interface 12 of the high-voltage control unit through the X2 interface 251 to realize serial communication connection, and the single-chip microcomputer 21 can send control operation parameters such as “filament current set value, chopping voltage set value, high-voltage set value, tube current set value” to the high-voltage control unit to control the operation state of the high-voltage control unit.

[0070] The single-chip microcomputer 21 is connected with the signal output interface 15 of the high-voltage control unit through the X5 interface 254 to realize high-voltage on-off state signal receiving, and the single-chip microcomputer 21 can send high-voltage on-off instructions to the high-voltage control unit.

[0071] The sampling end of the high-voltage regulating circuit 23 is connected with the high-voltage generator of the high-voltage control unit through the X7 interface 253 and the power supply interface 17, and the output end of the high-voltage regulating circuit 23 is connected with the high-voltage generator of the high-voltage control unit through the X6 interface 255 and the signal interface 16. The electrical function of the high-voltage regulating circuit 23 is summarized as follows: the analog high-voltage generator receives the "inverter voltage" output by the high-voltage control unit, then converts the "inverter voltage" into a direct-current high-voltage effective value, then takes the direct-current high-voltage effective value as a high-voltage feedback voltage, and then the analog high-voltage generator feeds back the high-voltage feedback voltage to the high-voltage control unit, so as to achieve the optimal effect of the high-voltage feedback voltage.

[0072] The sampling end of the current regulating circuit 24 is connected with the high-voltage generator of the high-voltage control unit through the X7 interface 253 and the power supply interface 17, and the output end of the current regulating circuit 24 is connected with the high-voltage generator of the high-voltage control unit through the X6 interface 255 and the signal interface 16. The electrical function of the current regulating circuit 24 is summarized as follows: the analog high-voltage generator receives the "filament current" output by the high-voltage control unit, then converts the "filament current" into a direct-current tube current voltage effective value, then takes the direct-current tube current voltage effective value as a tube current feedback voltage, and then the analog high-voltage generator feeds back the tube current feedback voltage to the high-voltage control unit, so as to achieve the optimal effect of the tube current feedback voltage.

[0073] More specifically,

[0074] Referring to Figure 5 , the high-voltage regulating circuit 23 comprises a load resistor, a mutual inductor, a sampling resistor, an AC / DC effective value converter and an amplifier.

[0075] The sampling end of the high-voltage regulating circuit 23 has two wire ends, which correspond to the A and B pins of the high-voltage generator connection power supply interface 17 of the high-voltage control unit, and are used to receive the inverter voltage of the high-voltage control unit. The two wire ends of the sampling end of the high-voltage regulating circuit 23 are connected to the input end of the mutual inductor, and the load resistor is connected in series between one of the wire ends and the mutual inductor. The inverter voltage of the high-voltage control unit is connected to the high-voltage regulating circuit 23 through the load resistor, and the inverter voltage is collected through the mutual inductor and the sampling resistor. The AC / DC effective value converter converts the collected inverter voltage into an effective sampling voltage, which is represented by V HV , and the amplifier amplifies the effective sampling voltage V HV , and the higher voltage obtained after amplification can be sent to the output end of the high-voltage regulating circuit 23 as a high-voltage feedback voltage, which is represented by V HV_Value .

[0076] In addition, the high voltage regulating circuit 23 further comprises a potentiometer P3, a potentiometer P1 and a jumper pin JP1.

[0077] The potentiometer P3 is arranged between the input and output of the amplifier, and is used to adjust the amplification factor, so as to realize the effect of fine-tuning the high voltage feedback voltage V HV_Value . That is, by adjusting the potentiometer P3, the high voltage feedback voltage of the high voltage control unit can be fine-tuned, so that the actual value of the tube voltage is close to the set value. This is the main electrical function of the high voltage regulating circuit 23.

[0078] The jumper pin JP1 has three pins, one of which is connected to the output of the high voltage regulating circuit 23, another is connected to the ground through the potentiometer P1, and the other is connected to the output of the amplifier. The jumper pin JP1 is connected to the S1 toggle switch 256 on the interface module 25, and the toggle of the S1 toggle switch 256 can control the connection between the output of the high voltage regulating circuit 23 and the output of the amplifier. The output of the high voltage regulating circuit 23 outputs the high voltage feedback voltage V HV_Value , or the output of the high voltage regulating circuit 23 is grounded through the potentiometer P1. In this way, when the high voltage is not turned on, the high voltage display value of the high voltage control unit can be calibrated by adjusting the potentiometer P1.

[0079] It should be noted that the potentiometer P3 is fine-tuned by changing the chopping coefficient in the microcomputer display screen 22, and the potentiometer P1 is controlled by the T3 knob switch 259 on the interface module 25, and the potentiometer P1 can be adjusted by the T3 knob switch 259.

[0080] Referring to Figure 6 , the current regulating circuit 24 comprises a load resistor, a transformer, a sampling resistor, an AC / DC effective value converter and an amplifier.

[0081] The sampling end of the current regulating circuit 24 has three wire ends, which correspond to the C, D and E pins of the power supply interface 17 connected to the high voltage generator of the high voltage control unit, and are used to receive the filament current of the high voltage control unit. The three wire ends of the sampling end of the current regulating circuit 24 are connected to the input end of the transformer, and the number of load resistors is two. The two load resistors are respectively connected in series at the wire end corresponding to the C pin and the wire end corresponding to the E pin, and then connected in parallel to one input end of the transformer. The wire end corresponding to the D pin is connected to the other input end of the transformer.

[0082] The filament current of the high voltage control unit is connected to the current regulating circuit 24 through the load resistor, and the filament current is collected through the transformer and the sampling resistor. The AC / DC effective value converter converts the collected filament current into an effective value, and obtains an analog tube current voltage V mArepresents, the amplifier to the analog tube current voltage V mA amplification processing, the higher voltage obtained after amplification can be sent to the output end of the current regulating circuit 24 as the tube current feedback voltage, which is represented by V mA_Value .

[0083] In addition, the current regulating circuit 24 also includes a potentiometer P4, a potentiometer P5, a potentiometer P2 and a jumper pin JP2.

[0084] The potentiometer P4 is arranged between the input end and the output end of the amplifier, for adjusting the amplification factor, so as to realize the effect of fine-tuning the tube current feedback voltage V mA_Value . That is, by adjusting the potentiometer P4, the tube current feedback voltage of the high-voltage control unit can be fine-tuned, so that the actual value of the tube current is close to the set value. This is the main electrical function of the current regulating circuit 24.

[0085] The potentiometer P5 is arranged at the input end of the amplifier (the two ends of the potentiometer P5 are connected to ±15V, and the adjusting end is connected to the input end of the amplifier), for adjusting the compensation tube current feedback voltage, so as to realize the effect of optimal tube current feedback voltage.

[0086] The jumper pin JP2 has three pins, one of which is connected to the output end of the current regulating circuit 24, another of which is connected to the ground through the potentiometer P2, and the other of which is connected to the output end of the amplifier. The jumper pin JP2 is connected to the S1 toggle switch 256 on the interface module 25, and toggling the S1 toggle switch 256 can control: making the output end of the current regulating circuit 24 and the output end of the amplifier connected, and the output end of the current regulating circuit 24 outputs the tube current feedback voltage V mA_Value , or making the output end of the current regulating circuit 24 grounded through the potentiometer P2, so that when the high voltage is not turned on, the tube current display value of the high-voltage control unit can be calibrated by adjusting the potentiometer P2.

[0087] It should be noted that the potentiometer P4 is fine-tuned by changing the filament coefficient in the microcomputer display screen 22; the potentiometer P2 is controlled by the T2 knob switch 258 on the interface module 25, and the potentiometer P2 can be adjusted by rotating the T2 knob switch 258; the potentiometer P5 is controlled by the T1 knob switch 257 on the interface module 25, and the potentiometer P5 can be adjusted by rotating the T1 knob switch 257.

[0088] The pin connection module 26 is electrically connected between the X4 interface 252 and the signal input interface 14 of the high-voltage control unit, and its electrical function is to short the pins of the signal input interface 14 of the high-voltage control unit (emergency stop signal) and supply 24V voltage to the pins as high-voltage enable.

[0089] The microcomputer display screen 22 is in communication connection with the single-chip microcomputer 21 through a communication line, and an operator can transmit data to the single-chip microcomputer 21 and issue an instruction through the operation of the microcomputer display screen 22, so as to control the operation of the high-voltage control unit through the single-chip microcomputer 21. The combination of the single-chip microcomputer 21 and the microcomputer display screen 22 substantially simulates the man-machine interface function of the control system server, sends a control instruction to the high-voltage control unit, and receives the operation data fed back by the high-voltage control unit.

[0090] Referring to Figure 4 The microcomputer display screen 22 is provided with a control interface, and the control interface is provided with a plurality of data input boxes, data display boxes, buttons and other graphical elements, such as a high-voltage set value input box, a high-voltage actual value display box, a tube current set value input box, a tube current actual value display box, a filament current set value input box, a filament current actual value display box, a chopping voltage set value input box, a chopping voltage actual value display box, an open high-voltage button, a close high-voltage button, a chopping / filament coefficient, a ray tube / generator, and the like. An operator can transmit data to the single-chip microcomputer 21 and issue an instruction (i.e., send an instruction to the high-voltage control unit) through the control interface, and can also obtain relevant data information (i.e., data information fed back by the high-voltage control unit).

[0091] In addition, a service mode check box is also provided on the control interface. When the service mode check box is not checked, the chopping / filament coefficient and the ray tube / generator in the control interface are in a gray state and cannot be modified, and an operator cannot adjust them. When the service mode check box is checked, the chopping / filament coefficient and the ray tube / generator in the control interface are in a modifiable state, and an operator can adjust them. The service mode check box is provided to avoid the misoperation of an operator.

[0092] In addition, an alarm area is also provided on the control interface, and the alarm area is provided with graphical elements such as a current alarm display box and a historical alarm display box. The alarm area is used to display alarm conditions to an operator, including displaying fault alarm codes fed back by the high-voltage control unit.

[0093] The single-chip microcomputer 21 is provided with a software system for realizing diagnosis operation. Based on the software system, the following can be realized: an operator issues an instruction to the high-voltage control unit through the microcomputer display screen 22, controls the operation of the high-voltage control unit, receives feedback data of the high-voltage control unit, and displays the feedback data (fault alarm codes) of the high-voltage control unit on the microcomputer display screen 22. An operator can determine the type and fault point of a fault according to the feedback data displayed on the microcomputer display screen 22.

[0094] It should be noted that the instruction set for controlling the operation of the high-voltage control unit, and the feedback data sent by the high-voltage control unit after receiving the instruction, are all common knowledge of those skilled in the art.

[0095] It should be noted that when the high-voltage control unit cannot turn on the high voltage, the high-voltage control unit will feedback a fault alarm code, which is displayed in the alarm area of the operation interface of the microcomputer display screen 22. The operator can determine the type and fault point of the fault according to the fault alarm code displayed on the operation interface, so as to facilitate rapid troubleshooting.

[0096] For example:

[0097] If the microcomputer display screen 22 operation interface displays the fault alarm code feedback by the high-voltage control unit as “98 NoHV 1 enable” (displayed in the current alarm display box or the historical alarm display box), it can be determined that the fuse tube on the mainboard of the high-voltage control unit may be damaged, and the fuse tube needs to be replaced.

[0098] If the microcomputer display screen 22 displays the fault alarm code feedback by the high-voltage control unit as “86 Absolute filament current – under current” (displayed in the current alarm display box or the historical alarm display box), it can be determined that the HZK1 board card of the high-voltage control unit has a fault.

[0099] If the microcomputer display screen 22 displays the fault alarm code feedback by the high-voltage control unit as “96 High voltage lamp faulty” (displayed in the current alarm display box or the historical alarm display box), it can be determined that the panel indicator light is faulty, and the NET1 board card needs to be replaced.

[0100] That is, the fault information displayed on the microcomputer display screen 22 is actually sent by the high-voltage control unit.

[0101] The embodiment provides a method for diagnosing using the above-mentioned fault diagnosis device.

[0102] Before starting the diagnosis, first connect the corresponding interface between the interface module 25 and the high-voltage generator with a cable, and then implement the following steps:

[0103] S1, set the high voltage, tube current on the operation interface of the microcomputer display screen 22, check the service mode, set the chopper and filament current coefficient to 1, select the corresponding type of X-ray tube, and select the corresponding type of high-voltage generator;

[0104] S2, adjust the T1 knob switch 257 to compensate the tube current feedback value, so that the actual value of the tube current is about 0.1 mA, and then send high voltage;

[0105] S3, the single-chip microcomputer 21 diagnoses the high-voltage system, if the high-voltage system is not normal, outputs the fault alarm code, and displays on the microcomputer display screen 22 (displayed in the current alarm display box or the historical alarm display box of the operation interface), then according to the displayed fault alarm code, judges the fault reason and eliminates;

[0106] S4, the high-voltage is normally started, there is no any fault alarm code on the microcomputer display screen 22, then slowly adjust the T1 knob switch 257, so that the actual value of the tube current and the set value are basically the same, to this determination high-voltage control unit function is normal.

[0107] The fault diagnosis device of the embodiment includes a single-chip microcomputer 21, a microcomputer display screen 22, a high-voltage regulating circuit 23 and a current regulating circuit 24, the single-chip microcomputer 21 can send control operation parameters to the high-voltage control unit, the high-voltage regulating circuit 23 can adjust the high-voltage feedback voltage of the high-voltage control unit, the current regulating circuit 24 can adjust the tube current feedback voltage of the high-voltage control unit, the single-chip microcomputer 21 is provided with a software system for realizing the diagnosis operation, based on the software system, the microcomputer display screen 22 can be operated to issue instructions to the high-voltage control unit, control the operation of the high-voltage control unit, receive the feedback data of the high-voltage control unit, and display the feedback data of the high-voltage control unit on the microcomputer display screen 22. When the high-voltage system of the thickness gauge fails, the fault diagnosis device of the embodiment is used to diagnose the high-voltage system, and the diagnosis result is displayed on the microcomputer display screen 22. The operator can quickly determine the fault point in the high-voltage system according to the diagnosis result, thereby greatly improving the efficiency of finding the fault point, effectively ensuring the normal operation of the production line, and avoiding the loss of downtime.

[0108] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application, therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thickness gauge high voltage system fault diagnosis device, the high voltage system comprising a high voltage control unit, the high voltage control unit having a serial interface (12), a signal output interface (15), a high voltage generator connection signal interface (16) and a high voltage generator connection power interface (17); the fault diagnosis device comprising a single-chip microcomputer (21), a microcomputer display screen (22), a high voltage regulating circuit (23), a current regulating circuit (24) and an interface module (25); the microcomputer display screen (22) being in communication connection with the single-chip microcomputer (21); the single-chip microcomputer (21) being in communication connection with the serial interface (12) of the high voltage control unit through the interface module (25), and the single-chip microcomputer (21) being capable of sending control operation parameters to the high voltage control unit through the serial interface (12) of the high voltage control unit; the single-chip microcomputer (21) being connected with the signal output interface (15) of the high voltage control unit through the interface module (25), and the single-chip microcomputer (21) being capable of sending high voltage on and high voltage off instructions to the high voltage control unit; the sampling end of the high voltage regulating circuit (23) being connected with the high voltage generator connection power interface (17) of the high voltage control unit through the interface module (25), and the output end of the high voltage regulating circuit (23) being connected with the high voltage generator connection signal interface (16) of the high voltage control unit through the interface module (25), and the high voltage regulating circuit (23) being capable of regulating the high voltage feedback voltage of the high voltage control unit; the high voltage regulating circuit (23) comprising a load resistor, a mutual inductor, a sampling resistor, an AC / DC effective value converter and an amplifier; the sampling end of the high voltage regulating circuit (23) being connected to the input end of the mutual inductor, the load resistor being arranged at the input end of the mutual inductor, the inverter voltage of the high voltage control unit being connected to the sampling end of the high voltage regulating circuit (23), the inverter voltage being collected through the mutual inductor and the sampling resistor, the collected inverter voltage being converted into an effective sampling voltage by the AC / DC effective value converter, and the effective sampling voltage being amplified by the amplifier, and the voltage obtained after amplification being sent to the output end of the high voltage regulating circuit (23) as the high voltage feedback voltage; the sampling end of the current regulating circuit (24) being connected with the high voltage generator connection power interface (17) of the high voltage control unit through the interface module (25), and the output end of the current regulating circuit (24) being connected with the high voltage generator connection signal interface (16) of the high voltage control unit through the interface module (25), and the current regulating circuit (24) being capable of regulating the tube current feedback voltage of the high voltage control unit; the single-chip microcomputer (21) being provided with a software system for realizing diagnosis operation, and based on the software system, the microcomputer display screen (22) can send instructions to the high voltage control unit, control the operation of the high voltage control unit, receive feedback data of the high voltage control unit and display the feedback data of the high voltage control unit on the microcomputer display screen (22). characterized in that the high voltage control unit having a signal input interface (14); the fault diagnosis device further comprising a pin connection module (26). ​ ​ ​ ​ ​ ​ ​ ​ 2. The thickness gauge high voltage system fault diagnostic device of claim 1, wherein: ​ ​ The pin connection module (26) is connected with the signal input interface (14) of the high-voltage control unit through the interface module (25), the pin connection module (26) can short the pin of the signal input interface (14) of the high-voltage control unit and supply 24V voltage as high-voltage enable.

3. The thickness gauge high voltage system fault diagnostic device of claim 1, wherein: The high-voltage regulating circuit (23) further comprises a potentiometer P3 arranged between the input end and the output end of the amplifier.

4. The thickness gauge high voltage system fault diagnostic device of claim 1, wherein: The fault diagnosis device is further provided with an S1 toggle switch (256); The high-voltage regulating circuit (23) further comprises a potentiometer P1; The output end of the high-voltage regulating circuit (23) and the output end of the amplifier are both connected to the S1 toggle switch (256), one end of the potentiometer P1 is grounded, and the other end is connected to the S1 toggle switch (256), and the S1 toggle switch (256) can be controlled to connect the output end of the high-voltage regulating circuit (23) and the output end of the amplifier or ground the output end of the high-voltage regulating circuit (23) through the potentiometer P1.

5. The thickness gauge high voltage system fault diagnostic device of claim 1, wherein: The current regulating circuit (24) comprises a load resistor, a mutual inductor, a sampling resistor, an AC / DC effective value converter and an amplifier. The sampling end of the current regulating circuit (24) is connected to the input end of the mutual inductor, the load resistor is arranged at the input end of the mutual inductor, the filament current of the high-voltage control unit is connected to the sampling end of the current regulating circuit (24), the filament current is collected through the mutual inductor and the sampling resistor, the collected filament current is converted into an effective value by the AC / DC effective value converter, an analog tube current voltage is obtained, and the voltage after amplification by the amplifier is sent to the output end of the current regulating circuit (24) as a tube current feedback voltage.

6. The thickness gauge high voltage system fault diagnostic device of claim 5, wherein: The current regulating circuit (24) further comprises a potentiometer P4 and a potentiometer P5, the potentiometer P4 is arranged between the input end and the output end of the amplifier, and the potentiometer P5 is arranged at the input end of the amplifier.

7. The thickness gauge high voltage system fault diagnostic device of claim 5, wherein: The fault diagnosis device is further provided with an S1 toggle switch (256); The current regulating circuit (24) further comprises a potentiometer P2. The output end of the current regulating circuit (24) and the output end of the amplifier are both connected to the S1 toggle switch (256), one end of the potentiometer P2 is grounded, and the other end is connected to the S1 toggle switch (256), and the S1 toggle switch (256) can be controlled to connect the output end of the current regulating circuit (24) and the output end of the amplifier or ground the output end of the current regulating circuit (24) through the potentiometer P2.

8. The thickness gauge high voltage system fault diagnostic apparatus of claim 1, wherein: An alarm area is arranged on the control interface of the microcomputer display screen (22), and the alarm area is used for displaying fault alarm codes fed back by the high-voltage control unit.

9. The thickness gauge high voltage system fault diagnostic apparatus of claim 1, wherein: A service mode check item is arranged on the control interface of the microcomputer display screen (22).

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