CN109782092B - Test method of X-ray image equipment combined machine head - Google Patents
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Abstract
The invention provides a detection method of an X-ray imaging equipment combined machine head, which comprises the following steps: the power-on initialization is used for detecting the power-on initialization of a test tool of a component connected with the bulb tube, and is connected with an upper computer, a direct-current power supply and a detected component to acquire a signal configured by the upper computer; detecting by a test tool, wherein the test tool outputs an acquired signal to the detected component after processing, and the electronic measuring instrument measures an output signal of the detected component; judging a result, namely judging whether the detected component meets the design requirement or not according to the comparison of the measurement result and a signal configured by the upper computer; each part in the combined machine head is detected in the preassembling process, so that the phenomenon of resource waste caused by reworking due to detection after complete assembly can be effectively avoided, and the qualification rate and the production efficiency of products are improved.
Description
Technical Field
The invention relates to the field of X-ray equipment testing, in particular to a testing method of a combined machine head in X-ray.
Background
With the wide application of domestic X-ray equipment in the fields of medical treatment and security inspection lamps, various X-ray equipment appears in the market, wherein a combined machine head component is an important part of the X-ray source equipment, and the combined machine head component mainly comprises a boosting voltage-multiplying component, a filament component, a bulb tube and the like.
At present, a high-voltage generator manufacturer carries out partial test or no test on a combined machine head during the preassembling of the whole machine, and for parts which are not fully tested, uncertain factors in the debugging process of the whole machine are too many, so that the product percent of pass is seriously influenced. The cluster head often presents various problems, such as: the internal electrical connection is unqualified, the turns ratio of the transformer is not matched, the KV cathode and anode are not balanced, the filament transformer is inconsistent, and the like, so that the resource waste is caused by reworking and maintenance when the complete machine is unqualified in test, and the generation efficiency is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for testing the combined machine head, and the method can effectively avoid the phenomenon of resource waste caused by reworking due to detection after the whole assembly by detecting the parameters and the performance of each part in the preassembling process before the whole assembly.
The invention provides a detection method of an X-ray imaging equipment combined machine head, which comprises the following steps:
the power-on initialization is used for detecting the power-on initialization of a test tool of a component connected with the bulb tube, and is connected with an upper computer, a direct-current power supply and a detected component to acquire a signal configured by the upper computer;
detecting by a test tool, wherein the test tool outputs an acquired signal to the detected component after processing, and the electronic measuring instrument measures an output signal of the detected component;
and judging a result, namely judging whether the detected part meets the design requirement or not according to the comparison of the measurement result and the signal configured by the upper computer.
Preferably, the detected component is a filament assembly, and the filament assembly comprises a filament transformer and a filament; the test tool controls the filament driving circuit to output signals to the filament transformer through the acquired signals through the main control circuit; the electronic measuring instrument measures the output signal of the filament transformer.
Preferably, whether the transformation ratio of the filament transformer is consistent with a design value or whether the size of the filament is correct is judged according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer.
Preferably, the detected component is a boosting voltage-multiplying component, the test tool controls the inverter driving circuit to output a driving signal through the main control circuit, the driving signal output by the inverter driving circuit controls the inverter circuit to output a signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; the electronic measuring instrument measures an output signal of the boosting voltage-multiplying component.
Preferably, whether the cathode and the anode of the boosting voltage-multiplying component are balanced is judged according to the signal value of the cathode and the anode of the boosting voltage-multiplying component measured by the electronic measuring instrument; and judging whether the winding process and the transformation ratio of the boosting voltage-doubling component coil are qualified or not according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer.
The invention also provides a test system of the X-ray image equipment combined machine head, which comprises a direct-current power supply, an upper computer, an electronic measuring instrument, a test tool and a combined machine head; wherein,
the direct current power supply is used for supplying power to the test tool;
the upper computer is used for configuring signals to a main control circuit in the test tool by using the upper computer software;
the testing tool is used for detecting a component connected with the bulb tube, and outputting the obtained signal to the detected component after processing;
the electronic measuring instrument is used for measuring an output signal of a detected component and judging whether the detected component meets the design requirement or not according to the comparison of a measuring result and a signal configured by the upper computer;
the detected component is a filament assembly and/or a boosting voltage-multiplying assembly, and the filament assembly, the boosting voltage-multiplying assembly and the bulb tube form the combined machine head.
Preferably, the detected part is a filament assembly, the filament assembly comprises a filament transformer and a filament, and the filament transformer is connected with the test tool and the filament; the test tool comprises a main control circuit and a filament driving circuit, and the test tool controls the filament driving circuit to output current to the filament transformer through the acquired signal through the main control circuit; the electronic measuring instrument comprises a current transformer, and the electronic measuring instrument measures the output current of the filament transformer through the current transformer.
Preferably, whether the transformation ratio of the filament transformer is consistent with a design value or whether the size of the filament is correct is judged according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer.
Preferably, the detected component is a boosting voltage-multiplying component, the boosting voltage-multiplying component is respectively connected with the test tool and the bulb tube, the bulb tube comprises a bulb tube cathode and a bulb tube anode, and a cathode and an anode of the boosting voltage-multiplying component are respectively connected with the bulb tube cathode and the bulb tube anode; the test tool controls the drive circuit to output a drive signal through the master control circuit, the drive signal output by the drive circuit controls the inverter circuit to output the drive signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; and the electronic measuring instrument measures the output voltage of the cathode and the anode of the boosting voltage-multiplying assembly.
Preferably, whether the cathode and the anode of the boosting voltage-multiplying component are balanced is judged according to the signal value of the cathode and the anode of the boosting voltage-multiplying component measured by the electronic measuring instrument; and judging whether the winding process and the transformation ratio of the boosting voltage-doubling component coil are qualified or not according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer.
Compared with the prior art, the invention has the beneficial effects that:
each part in the combined machine head is detected in the preassembling process, so that the phenomenon of resource waste caused by reworking due to detection after complete assembly can be effectively avoided, and the qualification rate and the production efficiency of products are improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic flow chart of a testing method of a combined handpiece according to the present invention;
FIG. 2 is a schematic view of a test system for a cluster head of the present invention;
FIG. 3 is a schematic circuit diagram of a testing system of the cluster head of the present invention;
fig. 4 is a schematic circuit diagram of signal acquisition of the voltage boosting and voltage doubling module of the testing system of the combined handpiece of the invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the detection method and the detection system of the X-ray image equipment combined machine head provided by the invention, the combined machine head comprises the filament assembly, the boosting voltage-multiplying assembly and the bulb tube, and the filament assembly and the boosting voltage-multiplying assembly in the combined machine head are detected by using the matched test tool during preassembly because the unqualified whole machine needs to be disassembled for rework maintenance, so that resource waste is caused.
The test fixture for detecting the filament assembly and the boosting voltage-multiplying assembly can be two independent test fixtures, and can also be integrated on one test fixture to meet different test requirements by connecting different interfaces; in addition, the electronic measuring instrument in the invention is preferably an oscilloscope.
As shown in fig. 1-4, the method for testing a combined machine head includes the following steps:
s1, performing power-on initialization, namely performing power-on initialization on the test tool, connecting the test tool with an upper computer, a direct-current power supply and a detected component, and acquiring a signal configured by the upper computer; in one embodiment, a filament transformer is connected to a filament driving circuit interface in a testing tool, and the other end of the filament transformer is connected with a filament of a bulb tube; in addition, the upper computer is connected to a communication interface of the main control circuit, and the main control circuit is connected with the filament driving circuit through a filament control feedback line; and a current transformer in the oscilloscope is connected with the secondary side of the filament transformer.
S2, detecting by a test tool, wherein the test tool outputs the obtained signals to the detected component after processing, and the electronic measuring instrument measures the output signals of the detected component; the detected part is a filament assembly, and the filament assembly comprises a filament transformer and a filament; the test tool controls the filament driving circuit to output signals to the filament transformer through the acquired signals through the main control circuit; the electronic measuring instrument measures an output signal of the filament transformer; in one embodiment, the direct-current bus voltage of the direct-current power supply is adjustable, the voltage adjusting range is 0V-600V, a current signal is set for the testing tool through upper computer software, the testing tool controls the filament driving circuit to output the set current signal to the filament transformer through the main control circuit, and the current of the secondary side of the filament transformer is measured through the current transformer.
S3, judging a result, namely judging whether the detected component meets the design requirement or not according to the comparison of the measurement result and the signal configured by the upper computer; comparing the measurement result of the electronic measurement instrument with a signal configured by the upper computer, and judging whether the transformation ratio of the filament transformer is consistent with a design value or whether the size of the selected filament is correct; in one embodiment, in step S1, after the power-on initialization, the electronic measurement device measures a current value, and it may first determine that the electrical connection of the filament assembly is reliable; if the electronic measuring instrument does not measure the current value after power-on initialization, whether the connection between the filament transformer and the filament and the testing tool is reliable or not can be preferentially checked, and the connection may be caused by loosening of an interface and the like; the electronic measuring instrument compares the measured value of the current transformer with the current threshold value set by the upper computer; if the measured value of the current transformer is within the current threshold value set by the upper computer, judging that the transformation ratio of the filament transformer is consistent with the design value or the selection of the large filament and the small filament is consistent with the design value; when the measured value of the current transformer is not within the current threshold set by the upper computer, the filament assembly needs to be reworked to further find out the defect caused by the reason.
In one embodiment, the filament assembly mainly adopts the continuous and adjustable duty ratio of direct current bus voltage and driving signals, and realizes constant filament current output through closed loop and open loop, thereby covering the detection of filament transformers of all combined machine heads and not limiting the performance detection of the filament transformers; through detecting the filament assembly in the preassembling process, the phenomenon of resource waste caused by reworking due to detection after the complete assembly can be effectively avoided, so that the production efficiency and the qualification rate of products are improved.
The test method of the combined machine head comprises the following steps of:
s1, performing power-on initialization, namely performing power-on initialization on the test tool, connecting the test tool with an upper computer, a direct-current power supply and a detected component, and acquiring a signal configured by the upper computer; in another embodiment, the detected component is a boosting voltage-multiplying component, the boosting voltage-multiplying component is respectively connected with a main transformer and a bulb, the main transformer is connected with the test tool and the boosting voltage-multiplying component, the bulb comprises a bulb cathode and a bulb anode, and a cathode and an anode of the boosting voltage-multiplying component are respectively connected with the bulb cathode and the bulb anode; in addition, the upper computer is connected to a communication interface of the main control circuit, and the main control circuit is connected with an inverter driving circuit in the test tool through a KV control feedback line.
S2, detecting by a test tool, wherein the test tool outputs the obtained signals to the detected component after processing, and the electronic measuring instrument measures the output signals of the detected component; the tested component is a boosting voltage-multiplying component, the test tool controls the inverter driving circuit to output a driving signal through the main control circuit, the driving signal output by the inverter driving circuit controls the inverter circuit to output a signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; the electronic measuring instrument measures an output signal of the boosting voltage-multiplying component; in another embodiment, the direct-current bus voltage of the direct-current power supply is adjustable, the voltage adjusting range is 0-600V, a voltage threshold value is configured for the test tool through upper computer software, the test tool controls the inverter driving circuit to output a driving signal through the main control circuit according to the set voltage threshold value, the driving signal output by the inverter driving circuit controls the inverter circuit to output a signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; the voltage of the two ends of the cathode and the anode of the boosting voltage-multiplying component is measured by an oscilloscope, and the monitoring of the output signal of the boosting voltage-multiplying component by the oscilloscope can be completed by the following modes:
1. as shown in fig. 3, the boost voltage-multiplying component is monitored by the high-voltage probe, and the oscilloscope directly measures the output signal of the boost voltage-multiplying component;
2. as shown in fig. 4, a sampling circuit and a proportional operational amplifier circuit for amplifying a signal collected by the sampling circuit are arranged between the boost voltage-multiplying component and the oscilloscope, the proportional operational amplifier circuit is connected with the oscilloscope, and the oscilloscope measures the signal collected by the sampling circuit;
3. compared with the second mode, the difference is that the proportional operational amplifier circuit is connected with an upper computer, and the signal value of the cathode and anode KV output by the boosting voltage-multiplying component is obtained through reading of the upper computer and signals collected by a calculation sampling circuit of upper computer software.
S3, judging a result, namely judging whether the detected component meets the design requirement or not according to the comparison of the measurement result and the signal configured by the upper computer; according to the signal values of the cathode and the anode of the boosting voltage-multiplying component measured by the electronic measuring instrument, judging whether the cathode and the anode of the boosting voltage-multiplying component are balanced; and judging whether the winding process and the transformation ratio of the boosting voltage-doubling component coil are qualified or not according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer. In another embodiment, in step S1, after the power-on initialization, the electronic measurement device measures the voltage value, and it may first determine that the electrical connection of the voltage boosting and voltage doubling component is reliable; if the voltage value is not measured by the oscilloscope after power-on initialization, whether the connection between the boosting voltage-multiplying component and the test tool is reliable or not can be preferentially checked, and the reasons of interface separation and the like can be possibly caused; the oscilloscope measures voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component, and the balance of the cathode and the anode of the boosting voltage-multiplying component is qualified when the voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component are the same; the measured value of the oscilloscope is within the voltage threshold set by the upper computer, and the winding process and the transformation ratio of the boosting voltage-multiplying component coil meet the requirements; the boosting voltage doubling component is unqualified and needs to be reworked or further determined to be in fault.
In another embodiment, the upper computer can realize continuous adjustment of pulse signal frequency and pulse width of PWM (pulse width modulation), drive the boosting voltage-multiplying component through a full-bridge inverter circuit, and realize high-voltage output by setting direct-current bus voltage and PWM driving signals; the boosting voltage-multiplying component mainly adopts the continuous and adjustable duty ratio of direct-current bus voltage and driving signals, and realizes constant high-voltage output through closed loop and open loop, thereby covering the detection of the boosting voltage-multiplying components of all combined heads; in the preassembling process, the filament assembly and the boosting voltage-multiplying assembly are detected, so that the phenomenon of resource waste caused by reworking due to detection after complete assembly can be effectively avoided, the production efficiency and the product percent of pass are improved, and the production cost is reduced.
When the X-ray combined machine head works, a cathode filament of the X-ray bulb tube is connected with high voltage of a filament transformer, and electrons generated by heating impact an anode target so as to generate X-rays; in order to meet the electrical performance detection in the preassembly process, the bus voltage and the duty ratio can be reduced, and the electrical performance detection of the boosting voltage-multiplying assembly in the air is realized.
In one embodiment, the electrical connection and the electrical performance of the primary detection are adjusted to meet the requirements, and then all parts of the combined machine head are put into insulating oil to detect the high-voltage insulating performance; therefore, rework and resource waste caused by errors in the assembling process are avoided, and inconvenience in assembly caused by pollution of insulating oil on other processes can be avoided; and assembling the qualified filament assembly, the boosting voltage-multiplying assembly and the bulb tube to form the combined machine head.
It should be noted that the test fixture has a corresponding protection mechanism, including faults such as overvoltage, overcurrent, undervoltage, undercurrent, and overtemperature, and can meet the requirement of protection by abnormal phenomena occurring in the test process, thereby ensuring the test safety of the component.
The invention also provides a test system of the X-ray image equipment combined machine head, which comprises a direct-current power supply, an upper computer, an electronic measuring instrument, a test tool and a combined machine head; the direct current power supply is used for supplying power to the test tool; the upper computer is used for configuring signals to a main control circuit in the test tool by using the upper computer software; the testing tool is used for detecting a component connected with the bulb tube, and outputting the obtained signal to the detected component after processing; the electronic measuring instrument is used for measuring an output signal of a detected component and judging whether the detected component meets the design requirement or not according to the comparison of a measuring result and a signal configured by the upper computer; the combined machine head comprises a filament assembly, a boosting voltage-multiplying assembly and a bulb tube.
Further, the detected part is a filament assembly, the filament assembly comprises a filament transformer and a filament, and the filament transformer is connected with the test tool and the filament; the test tool comprises a main control circuit and a filament driving circuit, and the test tool controls the filament driving circuit to output current to the filament transformer through the acquired signal through the main control circuit; the electronic measuring instrument comprises a current transformer, and the electronic measuring instrument measures the output current of the filament transformer through the current transformer; and according to the comparison of the measurement result of the electronic measurement instrument and the signal configured by the upper computer, judging whether the transformation ratio of the filament transformer is consistent with a design value or whether the size of the selected filament is correct.
Furthermore, the detected component is a boosting voltage-multiplying component, the boosting voltage-multiplying component is respectively connected with the test tool and the bulb tube, the bulb tube comprises a bulb tube cathode and a bulb tube anode, and a cathode and an anode of the boosting voltage-multiplying component are respectively connected with the bulb tube cathode and the bulb tube anode; the test tool controls the drive circuit to output a drive signal through the master control circuit, the drive signal output by the drive circuit controls the inverter circuit to output the drive signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; the electronic measuring instrument measures the output voltage of the cathode and the anode of the boosting voltage-multiplying component; according to the signal values of the cathode and the anode of the boosting voltage-multiplying component measured by the electronic measuring instrument, judging whether the cathode and the anode of the boosting voltage-multiplying component are balanced; according to the comparison of the measurement result of the electronic measuring instrument and the signal configured by the upper computer, whether the winding process and the transformation ratio of the boosting voltage-doubling component coil are qualified is judged; the monitoring of the output signal of the boost voltage-multiplying component by the oscilloscope can be completed by the following methods:
1. as shown in fig. 3, the boost voltage-multiplying component is monitored by the high-voltage probe, and the oscilloscope directly measures the output signal of the boost voltage-multiplying component;
2. as shown in fig. 4, a sampling circuit and a proportional operational amplifier circuit for amplifying a signal collected by the sampling circuit are arranged between the boost voltage-multiplying component and the oscilloscope, the proportional operational amplifier circuit is connected with the oscilloscope, and the oscilloscope measures the signal collected by the sampling circuit;
3. compared with the second mode, the difference is that the proportional operational amplifier circuit is connected with an upper computer, and the signal value of the cathode and anode KV output by the boosting voltage-multiplying component is obtained through reading of the upper computer and signals collected by a calculation sampling circuit of upper computer software.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (1)
- The detection method of the X-ray imaging equipment combined machine head is characterized by comprising the following steps of:the power-on initialization is used for detecting the power-on initialization of a test tool of a component connected with the bulb tube, and is connected with an upper computer, a direct-current power supply and a detected component to acquire a signal configured by the upper computer;detecting by a test tool, wherein the test tool outputs the acquired signals to the detected component after processing, and an electronic measuring instrument measures the output signals of the detected component;judging a result, namely judging whether the detected component meets the design requirement or not according to the comparison of the measurement result and a signal configured by the upper computer;the detected part is a filament assembly, and the filament assembly comprises a filament transformer and a filament; the test tool controls the filament driving circuit to output signals to the filament transformer through the acquired signals through the main control circuit; the electronic measuring instrument measures an output signal of the filament transformer;comparing the measurement result of the electronic measurement instrument with a signal configured by the upper computer, and judging whether the transformation ratio of the filament transformer is consistent with a design value or whether the size of the selected filament is correct;the tested component is a boosting voltage-multiplying component, the test tool controls the inverter driving circuit to output a driving signal through the main control circuit, the driving signal output by the inverter driving circuit controls the inverter circuit to output a signal to the resonant circuit, and the resonant circuit drives the boosting voltage-multiplying component; the electronic measuring instrument measures voltage values of two ends of the cathode and the anode of the boosting voltage-multiplying component;according to the voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component measured by the electronic measuring instrument, judging whether the voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component are balanced; according to the comparison of the measurement result of the electronic measuring instrument and the signal configured by the upper computer, whether the winding process and the transformation ratio of the boosting voltage-doubling component coil are qualified is judged;the electronic measuring instrument is an oscilloscope; the oscilloscope measures voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component, and the balance of the cathode and the anode of the boosting voltage-multiplying component is qualified when the voltage values of the two ends of the cathode and the anode of the boosting voltage-multiplying component are the same; the measured value of the oscilloscope is within the voltage threshold set by the upper computer, and the winding process and the transformation ratio of the boosting voltage-multiplying component coil meet the requirements.
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| CN2134771Y (en) * | 1992-09-02 | 1993-05-26 | 成都地质学院 | Exciting source of portable x-ray fluorescent scope |
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| US9281156B2 (en) * | 2013-03-15 | 2016-03-08 | Thermo Scientific Portable Analytical Instruments Inc. | Volumetrically efficient miniature X-ray system |
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| 《西门子POLYMOBIL III型移动式X光机故障分析与维修》;周忠慈 等;《中国医疗设备》;20161231;第160、169页 * |
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