CN103315755A - X-ray tube assembly, X-ray equipment and warning method - Google Patents
X-ray tube assembly, X-ray equipment and warning method Download PDFInfo
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Abstract
The embodiment of the invention discloses an X-ray tube assembly, X-ray equipment and a warning method, relates to the field of medical equipment and aims to improve the accuracy in temperature warning for an X-ray tube. The X-ray tube assembly includes an X-ray tube, a temperature sensor, a computing unit and a warning indicator, wherein the temperature sensor is used for detecting the oil temperature value around an anode of the X-ray tube; the computing unit is used for judging whether the X-ray tube is in the superheat state or not as per the oil temperature value, and issuing a trigger signal to the warning indicator if the X-ray tube is in the superheat state; the warning indicator is used for outputting a warning signal representing that the X-ray tube is in the superheat state after receiving the trigger signal. Through the adoption of the X-ray tube assembly, the X-ray equipment and the warning method, the accuracy in temperature warning for the X-ray tube is effectively improved.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to an X-ray tube assembly, X-ray equipment and an alarm method.
Background
X-ray tubes are commonly used in X-ray imaging devices to generate X-rays. During operation of the X-ray tube, the oil around the anode of the X-ray tube generates a large amount of heat, which increases the temperature of the X-ray tube. In order to solve the problem that an excessive temperature may cause damage to the X-ray tube, the following automatic protection mechanism is provided: an oil pressure switch is integrated in the X-ray tube, and when the temperature in the X-ray tube is too high, the oil pressure switch can be automatically started to prevent the X-ray tube from continuously generating X-rays. The automatic protection mechanism can avoid the problem of damage of the X-ray tube caused by overheating, but if the X-ray tube is used in a medical imaging process, certain dangerousness is brought, for example, if the X-ray tube stops working suddenly in the operation process, the operation is forced to be interrupted, and therefore life danger is brought to a patient. Therefore, alarm information needs to be sent out before the oil pressure switch is automatically started, so that the aim of reminding an operator is fulfilled.
Therefore, it is necessary to improve the estimation result of the tube load value, thereby improving the accuracy of the alarm information.
Disclosure of Invention
The embodiment of the invention provides an X-ray tube assembly, X-ray equipment and an alarm method, which are used for improving the accuracy of temperature alarm of an X-ray tube.
The X-ray tube assembly provided by the embodiment of the invention comprises an X-ray tube, a temperature sensor arranged in the X-ray tube, a computing unit connected with the temperature sensor and an alarm indicator connected with the computing unit; wherein,
the temperature sensor is used for detecting the oil temperature value around the anode of the X-ray tube;
the computing unit is used for judging whether the X-ray tube is in an overheating state or not according to the oil temperature value, and sending a trigger signal for outputting an alarm signal to the alarm indicator when the X-ray tube is judged to be in the overheating state;
and the alarm indicator is used for outputting an alarm signal representing the overheating of the X-ray tube after receiving the trigger signal sent by the computing unit.
In the embodiment of the invention, a temperature sensor is arranged in the X-ray tube, whether the X-ray tube is in an overheating state or not is judged according to an oil temperature value detected by the temperature sensor, and an alarm signal is output when the X-ray tube is judged to be in the overheating state. Because the oil temperature value detected by the temperature sensor can truly reflect the temperature of the X-ray tube, the accuracy of the result of judging whether the X-ray tube is in an overheat state according to the oil temperature value is higher, and the accuracy of the sent alarm signal can be further improved.
Preferably, the calculation unit determines whether the oil temperature value exceeds a preset temperature threshold, and if so, determines that the X-ray tube is in an overheat state, otherwise, determines that the X-ray tube is not in an overheat state. Or the calculation unit calculates the tube load value of the X-ray tube according to the oil temperature value, judges whether the tube load value exceeds a preset load threshold value, judges that the X-ray tube is in an overheating state if the tube load value exceeds the preset load threshold value, and judges that the X-ray tube is not in the overheating state if the tube load value does not exceed the preset load threshold value.
In the embodiment of the invention, two methods for judging whether the X-ray tube is in the overheating state are provided, wherein the first method directly judges whether the X-ray tube is in the overheating state according to the oil temperature value, the method does not need to calculate the tube load value of the X-ray tube according to the oil temperature value, and the complexity is low; the other method is that after the tube load value of the X-ray tube is calculated according to the oil temperature value, whether the X-ray tube is in the overheating state is judged according to the tube load value, the method can be consistent with the method for judging whether the X-ray tube is in the overheating state according to the tube load value in the prior art, and a more accurate tube load value can be obtained through the method.
Preferably, the calculation unit is further configured to calculate a tube load value of the X-ray tube according to a cooling curve of the X-ray tube, and send a trigger signal for outputting an alarm signal to the alarm indicator when the tube load value exceeds a preset load threshold.
In the embodiment of the invention, the load value of the tube is further calculated according to the method in the prior art, and the alarm indicator is triggered to output the alarm signal when the load value of the tube exceeds the preset load threshold value, so that the problem that the alarm signal cannot be timely and accurately output due to the damage of the temperature sensor can be prevented.
Preferably, the X-ray tube assembly further comprises a data transmission interface for outputting the oil temperature value detected by the temperature sensor and/or the tube load value calculated by the calculation unit to an external monitoring device.
In the embodiment of the invention, the oil temperature value and/or the tube load value of the X-ray tube can be output to the external monitoring equipment through the data transmission interface, so that the external monitoring equipment can obtain the accurate state information of the X-ray tube, and the X-ray tube can be monitored according to the obtained information.
Preferably, the temperature threshold is smaller than a maximum temperature value that the X-ray tube can withstand.
In the embodiment of the invention, the oil pressure switch in the X-ray tube is started when reaching the maximum temperature value which can be born by the X-ray tube so as to prevent the X-ray tube from continuously emitting X rays and avoid the damage of the X-ray tube due to overhigh temperature, so that the temperature threshold is smaller than the maximum temperature value which can be born by the X-ray tube, an alarm signal can be output before the oil pressure switch is started, an operator can know the state of the X-ray tube in time before the X-ray tube automatically stops working, and the dangerous condition that the X-ray tube suddenly and automatically stops working in the operation process is avoided.
Preferably, the load threshold is smaller than a maximum tube load value that the X-ray tube can bear.
In the embodiment of the invention, the oil pressure switch in the X-ray tube is started when reaching the maximum temperature value which can be born by the X-ray tube, namely the maximum tube load value, so as to prevent the X-ray tube from continuously emitting X rays and avoid the damage of the X-ray tube due to overhigh temperature, therefore, the load threshold value is smaller than the maximum temperature value which can be born by the X-ray tube, an alarm signal can be ensured to be output before the oil pressure switch is started, an operator can timely know the state of the X-ray tube before the X-ray tube automatically stops working, and the dangerous situation that the X-ray tube suddenly and automatically stops working in the operation process is avoided.
Preferably, the temperature sensor is disposed on an inner surface of an anode of the X-ray tube.
In the embodiment of the invention, the temperature sensor is arranged on the inner surface of the anode of the X-ray tube, and the temperature sensor is closer to the anode of the X-ray tube, so that the detected oil temperature value is more accurate.
Preferably, the alarm signal output by the alarm indicator is a voice signal or a light signal.
In the embodiment of the invention, the voice alarm signal or the light alarm signal is adopted, and compared with the data alarm signal in the prior art, the alarm effect is more obvious, so that the alarm effect can be improved.
The X-ray equipment provided by the embodiment of the invention comprises the X-ray tube assembly.
The alarm method based on the X-ray tube assembly provided by the embodiment of the invention comprises the following steps:
the temperature sensor detects the oil temperature value around the anode of the X-ray tube;
the calculation unit judges whether the X-ray tube is in an overheating state or not according to the oil temperature value, and when the judgment is yes, a trigger signal for outputting an alarm signal is sent to an alarm indicator;
the alarm indicator outputs an alarm signal of the overheating of the X-ray tube after receiving the trigger signal from the computing unit.
In the embodiment of the invention, whether the X-ray tube is in an overheating state or not is judged according to the oil temperature value detected by the temperature sensor, and an alarm signal is output when the X-ray tube is judged to be in the overheating state. Because the oil temperature value detected by the temperature sensor can truly reflect the temperature of the X-ray tube, the accuracy of the result of judging whether the X-ray tube is in an overheat state according to the oil temperature value is higher, and the accuracy of the sent alarm signal can be further improved.
Preferably, the calculating unit determines whether the X-ray tube is in an overheat state according to the oil temperature value, and specifically includes: judging whether the oil temperature value exceeds a preset temperature threshold value, if so, judging that the X-ray tube is in an overheated state, otherwise, judging that the X-ray tube is not in the overheated state; or, calculating a tube load value of the X-ray tube according to the oil temperature value, and judging whether the tube load value exceeds a preset load threshold value, if so, judging that the X-ray tube is in an overheated state, otherwise, judging that the X-ray tube is not in the overheated state.
In the embodiment of the invention, two methods for judging whether the X-ray tube is in the overheating state are provided, wherein the first method directly judges whether the X-ray tube is in the overheating state according to the oil temperature value, the method does not need to calculate the tube load value of the X-ray tube according to the oil temperature value, and the complexity is low; the other method is that after the tube load value of the X-ray tube is calculated according to the oil temperature value, whether the X-ray tube is in the overheating state is judged according to the tube load value, the method can be consistent with the method for judging whether the X-ray tube is in the overheating state according to the tube load value in the prior art, and a more accurate tube load value can be obtained through the method.
Preferably, further comprising: the calculation unit calculates a tube load value of the X-ray tube according to the cooling curve of the X-ray tube, and sends a trigger signal for outputting an alarm signal to an alarm indicator when the tube load value exceeds a preset load threshold value.
In the embodiment of the invention, the load value of the tube is further calculated according to the method in the prior art, and the alarm indicator is triggered to output the alarm signal when the load value of the tube exceeds the preset load threshold value, so that the problem that the alarm signal cannot be timely and accurately output due to the damage of the temperature sensor can be prevented.
Preferably, further comprising: and outputting the oil temperature value detected by the temperature sensor and/or the pipe load value calculated by the calculating unit to an external monitoring device through a data transmission interface.
In the embodiment of the invention, the oil temperature value and/or the tube load value of the X-ray tube can be output to the external monitoring equipment through the data transmission interface, so that the external monitoring equipment can obtain the accurate state information of the X-ray tube, and the X-ray tube can be monitored according to the obtained information.
Drawings
The above features, technical features, advantages and embodiments of the present invention will be further explained in the following detailed description of preferred embodiments in a clearly understandable manner, in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a known process for calculating a tube load value of an X-ray tube;
FIG. 2 is a schematic illustration of a cooling curve of a known X-ray tube;
fig. 3 is a schematic structural diagram of an X-ray tube assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an X-ray tube assembly according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating a method according to a third embodiment of the present invention.
The reference numbers are as follows:
Method steps 50-52
Detailed Description
At present, to send the alarm information, it is necessary to first estimate a tube load value of the X-ray tube, where the tube load value is a ratio of a current heat value of the X-ray tube to a set heat threshold value. As shown in fig. 1, the method of estimating the tube load value of the X-ray tube is as follows:
judging whether the current X-ray tube is in an exposure state, if the current X-ray tube is in the exposure state, firstly calculating an accumulated heat value delta Q ═ U × I ×, Δ t, wherein U is a current voltage value, I is a current value, and Δ t is the time of exposure of the X-ray tube, and then calculating a current heat value Q ═ Q (t) + Δ Q) of the X-ray tube, wherein Q (t) is a cooling loss heat value at the current moment obtained according to a cooling curve, the cooling curve is shown in FIG. 2, and after a recorded cooling loss heat value at the last moment and a time difference dt between the last moment and the current moment are obtained, the cooling loss heat value at the current moment can be read from the cooling curve; if the current X-ray tube is not in an exposure state, the current heat value Q ═ Q (t) of the X-ray tube, that is, the current heat value of the X-ray tube is the cooling loss heat value at the current time obtained from the cooling curve. After the current heat value of the X-ray tube is obtained, the tube load value of the X-ray tube can be obtained according to the current heat value.
And after the tube load value of the X-ray tube is estimated, if the estimated tube load value is larger than a set load threshold value, sending alarm information.
The technology estimates the tube load value of the X-ray tube according to information such as a cooling curve, and the estimated tube load value cannot truly reflect the current temperature of the X-ray tube. The embodiment of the invention further improves the accuracy of the pipe load value on the basis of the technology, thereby improving the accuracy of the alarm information.
Embodiments according to the present invention are described in further detail below with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 3, the present embodiment provides an X-ray tube assembly including: an X-ray tube 30, a temperature sensor 31 disposed within the X-ray tube 30, a calculation unit 32 connected to the temperature sensor 31, and an alarm indicator 33 connected to the calculation unit 32; wherein,
the temperature sensor 31 is used for detecting the oil temperature value around the anode of the X-ray tube 30;
the calculation unit 32 is configured to determine whether the X-ray tube 30 is in an overheat state according to the oil temperature value, and send a trigger signal for outputting an alarm signal to the alarm indicator 33 when the determination is yes;
the alarm indicator 33 is configured to output an alarm signal indicating that the X-ray tube 30 is overheated after receiving the trigger signal from the calculation unit 32.
Specifically, the calculation unit 32 may determine whether the X-ray tube 30 is in the overheat state as follows: and judging whether the oil temperature value detected by the temperature sensor 31 exceeds a preset temperature threshold value, if so, judging that the X-ray tube 30 is in an overheat state, and otherwise, judging that the X-ray tube 30 is not in the overheat state.
The calculation unit 32 may also determine whether the X-ray tube 30 is in an overheated state as follows: the tube load value of the X-ray tube 30 is calculated according to the oil temperature value detected by the temperature sensor 31, and whether the tube load value exceeds a preset load threshold value is judged, if yes, the X-ray tube 30 is judged to be in an overheating state, otherwise, the X-ray tube 30 is judged not to be in the overheating state.
Further, the calculation unit 32 is further configured to calculate a tube load value of the X-ray tube 30 according to a cooling curve of the X-ray tube 30, and send a trigger signal for outputting an alarm signal to the alarm indicator 33 when the tube load value exceeds a preset load threshold.
Example two:
as shown in fig. 4, the present embodiment provides an X-ray tube assembly including: an X-ray tube 30, a temperature sensor 31 arranged in the X-ray tube 30, a calculation unit 32 connected to the temperature sensor 31, an alarm indicator 33 connected to the calculation unit 32, and a data transmission interface 34 connected to the calculation unit 32; wherein,
the temperature sensor 31 is used for detecting the oil temperature value around the anode of the X-ray tube 30;
the calculation unit 32 is configured to determine whether the X-ray tube 30 is in an overheat state according to the oil temperature value, and send a trigger signal for outputting an alarm signal to the alarm indicator 33 when the determination is yes;
the alarm indicator 33 is configured to output an alarm signal indicating that the X-ray tube 30 is overheated after receiving the trigger signal from the calculation unit 32.
Specifically, the calculation unit 32 may determine whether the X-ray tube 30 is in the overheat state as follows: and judging whether the oil temperature value detected by the temperature sensor 31 exceeds a preset temperature threshold value, if so, judging that the X-ray tube 30 is in an overheat state, and otherwise, judging that the X-ray tube 30 is not in the overheat state.
The calculation unit 32 may also determine whether the X-ray tube 30 is in an overheat state as follows: the tube load value of the X-ray tube 30 is calculated according to the oil temperature value detected by the temperature sensor 31, and whether the tube load value exceeds a preset load threshold value is judged, if yes, the X-ray tube 30 is judged to be in an overheating state, otherwise, the X-ray tube 30 is judged not to be in the overheating state.
Further, the calculation unit 32 is further configured to calculate a tube load value of the X-ray tube 30 according to a cooling curve of the X-ray tube 30, and send a trigger signal for outputting an alarm signal to the alarm indicator 33 when the tube load value exceeds a preset load threshold.
Further, the data transmission interface 34 is used for outputting the oil temperature value detected by the temperature sensor 31 and/or the pipe load value calculated by the calculation unit 32 to an external monitoring device.
Example three:
referring to fig. 5, the present embodiment provides an alarm method for an X-ray tube assembly according to the first embodiment or the second embodiment, including the following steps:
step 50: the temperature sensor detects the oil temperature value around the anode of the X-ray tube;
step 51: the calculation unit judges whether the X-ray tube is in an overheating state or not according to the oil temperature value, and when the judgment is yes, a trigger signal for outputting an alarm signal is sent to the alarm indicator;
step 52: the alarm indicator outputs an alarm signal of overheating of the X-ray tube after receiving the trigger signal from the calculation unit.
Specifically, the calculation unit may determine whether the X-ray tube is in the overheat state according to the oil temperature value, and may adopt the following method:
judging whether the oil temperature value detected by the temperature sensor exceeds a preset temperature threshold value, if so, judging that the X-ray tube is in an overheated state, otherwise, judging that the X-ray tube is not in the overheated state; or,
and calculating a tube load value of the X-ray tube according to the oil temperature value detected by the temperature sensor, judging whether the tube load value exceeds a preset load threshold value, if so, judging that the X-ray tube is in an overheated state, and otherwise, judging that the X-ray tube is not in the overheated state.
Preferably, the calculation unit may further calculate a tube load value of the X-ray tube according to a cooling curve of the X-ray tube, and send a trigger signal for outputting an alarm signal to the alarm indicator when the tube load value exceeds a preset load threshold.
Preferably, the X-ray tube assembly further outputs an oil temperature value detected by the temperature sensor and/or a tube load value calculated by the calculation unit to an external monitoring device through the data transmission interface.
In the above embodiments, the temperature threshold is smaller than the maximum temperature value that the X-ray tube can withstand. The load threshold is less than the maximum tube load value that the X-ray tube can withstand. Of course, the temperature threshold and the load threshold need to be greater than 0. The maximum temperature value and the maximum tube load value which can be borne by the X-ray tube can be obtained according to the specification parameters of the X-ray tube.
In the above embodiments, the temperature sensor 31 is provided on the inner surface of the anode of the X-ray tube. As shown in fig. 3 and 4, the calculation unit 32 and the alarm indicator 33 may be disposed between the X-ray tube assembly's enclosure 35 and the X-ray tube 30; alternatively, the calculation unit 32 is disposed between the X-ray tube assembly package 35 and the X-ray tube 30, and the alarm indicator 33 is disposed on the outer surface of the X-ray tube assembly package 35; alternatively, the calculation unit 32 and the alarm indicator 33 are both arranged on the outer surface of the package housing 35 of the X-ray tube assembly.
In the above embodiments, the alarm signal output by the alarm indicator is a voice signal or an optical signal.
In the above embodiments, the tube load value of the X-ray tube is calculated according to the oil temperature value detected by the temperature sensor, and the following two methods may be adopted: firstly, calculating the ratio of an oil temperature value detected by a temperature sensor to the maximum temperature value which can be born by an X-ray tube to obtain a tube load value of the X-ray tube; secondly, calculating the current heat value of the X-ray tube according to the oil temperature value detected by the temperature sensor, and calculating the ratio of the heat value to the maximum heat value which can be borne by the X-ray tube to obtain the tube load value of the X-ray tube.
In the second and third embodiments, when the data Transmission interface outputs the oil temperature value detected by the temperature sensor and/or the pipe load value calculated by the calculation unit to the external monitoring device, a standard industry communication Protocol, such as a Transmission Control Protocol (TCP) or a CONTROLLER AREA NETWORK (CAN) Protocol, may be used.
In the above embodiments, the computing unit may adopt hardware with an analysis computing function, such as a CPU processor; the alarm indicator can adopt an LED lamp, an alarm and the like.
An embodiment of the present invention further provides an X-ray apparatus including the X-ray tube assembly according to the first embodiment or the second embodiment. The X-ray device may be an X-ray machine, a CT machine, etc.
While the invention has been illustrated and described in detail in the drawings and foregoing description with reference to preferred embodiments, the invention is not limited to the embodiments disclosed, and other arrangements derived therefrom by those skilled in the art are within the scope of the invention.
Claims (10)
1. An X-ray tube assembly comprising an X-ray tube (30), characterized in that the X-ray tube assembly further comprises: a temperature sensor (31) arranged within said X-ray tube (30), a calculation unit (32) connected to the temperature sensor (31), and an alarm indicator (33) connected to the calculation unit (32); wherein,
the temperature sensor (31) is used for detecting the oil temperature value around the anode of the X-ray tube (30);
the calculation unit (32) is used for judging whether the X-ray tube (30) is in an overheating state or not according to the oil temperature value, and sending a trigger signal to the alarm indicator (33) when the judgment is yes;
the alarm indicator (33) is used for outputting an alarm signal which represents that the X-ray tube (30) is overheated after receiving the trigger signal.
2. The X-ray tube assembly according to claim 1, wherein the calculation unit (32) determines whether the oil temperature value exceeds a preset temperature threshold, and if so, determines that the X-ray tube (30) is in an overheated state; or,
the calculation unit (32) calculates a tube load value of the X-ray tube (30) from the oil temperature value, determines whether the tube load value exceeds a preset load threshold value, and determines that the X-ray tube (30) is in an overheated state if the tube load value exceeds the preset load threshold value.
3. The X-ray tube assembly according to claim 1 or 2, further comprising a data transmission interface (34) for outputting the oil temperature value and/or the tube load value to an external monitoring device.
4. The X-ray tube assembly according to claim 2, wherein the temperature threshold is less than a maximum temperature value that the X-ray tube (30) can withstand; and/or the presence of a gas in the gas,
the load threshold is smaller than a maximum tube load value that the X-ray tube (30) is capable of withstanding.
5. The X-ray tube assembly according to claim 1, wherein the temperature sensor (31) is arranged on an inner surface of an anode of the X-ray tube (30).
6. The X-ray tube assembly according to claim 1, wherein the alarm signal output by the alarm indicator (33) is a voice signal or a light signal.
7. An X-ray apparatus, characterized in that it comprises an X-ray tube assembly as claimed in any one of claims 1-6.
8. An alarm method for an X-ray tube assembly, the method comprising:
detecting an oil temperature value around an anode of the X-ray tube;
judging whether the X-ray tube is in an overheating state or not according to the oil temperature value, and sending a trigger signal when the X-ray tube is judged to be in the overheating state;
and outputting an alarm signal representing the overheating of the X-ray tube after the trigger signal is detected.
9. The method of claim 8, wherein said determining whether the X-ray tube is in an over-temperature condition based on the oil temperature value comprises:
judging whether the oil temperature value exceeds a preset temperature threshold value, if so, judging that the X-ray tube is in an overheat state; or,
and calculating a tube load value of the X-ray tube according to the oil temperature value, judging whether the tube load value exceeds a preset load threshold value, and if so, judging that the X-ray tube is in an overheating state.
10. The method of claim 8 or 9, further comprising:
and outputting the oil temperature value and/or the pipe load value to external monitoring equipment through a data transmission interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210079087.7A CN103315755B (en) | 2012-03-23 | 2012-03-23 | X-ray tube component, X-ray equipment and alarm method |
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| CN201210079087.7A CN103315755B (en) | 2012-03-23 | 2012-03-23 | X-ray tube component, X-ray equipment and alarm method |
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| CN103315755A true CN103315755A (en) | 2013-09-25 |
| CN103315755B CN103315755B (en) | 2016-08-31 |
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| CN109646029A (en) * | 2019-01-15 | 2019-04-19 | 麦默真空技术无锡有限公司 | A kind of control method and system of CT bulb fault pre-alarming |
| CN111338285A (en) * | 2020-05-25 | 2020-06-26 | 天津美腾科技股份有限公司 | Radiation source environmental control system and mining equipment |
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| CN103315755B (en) | 2016-08-31 |
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