CN109038770A - A kind of CT power supply device, CT device and CT detect vehicle - Google Patents

Abstract

The invention discloses a kind of CT power supply device, CT device and CT to detect vehicle, and CT power supply device includes output end, control module and at least two energy storage mould groups, and output end is for connecting high pressure generator；Each energy storage mould group is all connected to output end, and controls whether to power to output end from control module；When preset condition meets, controller controls the energy storage mould group powered to output end and stops power supply, and at least another energy storage mould group of control is powered to output end, that is, has the energy-storage module normality of n group charging, wherein have one group in rotation work.Expanded the field of employment of CT device, and the fluctuation for avoiding the alternating current of power grid it is larger when can to CT detect caused by interference；And realize each energy storage mould group and power in turn, it is ensured that the quality powered to high pressure generator, such as the amplitude of offer voltage can satisfy the demand that high pressure generator works normally.

Description

A CT power supply device, a CT device and a CT inspection vehicle

technical field

The invention relates to the field of CT equipment, in particular to a CT power supply device, a CT device and a CT detection vehicle.

Background technique

CT equipment uses X-ray beams to scan a layer of a certain thickness. The X-rays that pass through the layer are received by the detector and converted into visible light, which is converted from photoelectricity to electrical signals, and then converted into digital signals by analog/digital converters. , input into the computer for processing. For example, medical CT equipment uses highly sensitive instruments to measure the human body according to the difference in the absorption and transmittance of X-rays by different tissues of the human body, and then inputs the data obtained from the measurement into the computer, and the computer processes the data. , you can take a cross-sectional or three-dimensional image of the inspected part of the human body, and find small lesions in any part of the body.

CT equipment includes an X-ray machine. An X-ray machine is a device that generates X-rays. It is mainly composed of an X-ray tube, a fluorescent plate, an X-ray machine power supply, and a control circuit. It requires a high-quality power supply for power supply. However, the existing CT equipment is generally powered by the alternating current of the grid, but sometimes the fluctuation of the alternating current of the grid is large, which will interfere with the CT detection, and for the movable CT equipment, some places do not have the required alternating current of the grid, such as 380V AC .

Contents of the invention

In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a CT power supply device, a CT device and a CT detection vehicle, which can solve the problem that the existing CT equipment is generally powered by the AC power of the grid, but the AC power of the grid fluctuates greatly Sometimes it will cause interference to CT detection, and for mobile CT equipment, some places do not have the problem of grid alternating current that meets the requirements.

The purpose of the present invention adopts following technical scheme to realize:

A CT power supply device, including an output terminal, a control module and at least two energy storage modules, the output terminal is used to connect a high-voltage generator; each energy storage module is connected to the output terminal, and is controlled by the The module controls whether to supply power to the output terminal;

When the preset condition is satisfied, the controller controls the energy storage module supplying power to the output terminal to stop supplying power, and controls at least another energy storage module to supply power to the output terminal.

Further, each energy storage module includes an energy storage unit and a switch unit, and each energy storage unit is connected to the output end through a corresponding switch unit;

The control module controls whether the corresponding energy storage unit supplies power to the output terminal through the switch unit.

Further, the switch unit includes a controlled terminal, a common terminal and a working terminal, the controlled terminal is connected to the control module, the common terminal is connected to the corresponding energy storage unit, and the working terminal is connected to the Output terminal; working terminal of the common terminal When the high voltage generator is in an unloaded state, the control module is used to control the connection or disconnection of the common terminal and the working terminal through the controlled terminal.

Further, the CT power supply device also includes a charging module, and the switching unit also includes a charging terminal, and the charging terminals of each switching unit are connected to the charging module; the control module controls the charging terminal through the controlled terminal. When the common terminal is disconnected from the working terminal, the common terminal is connected to the charging terminal.

Further, the charging module includes an input terminal for connecting to an external power supply, and the external power supply is 220V AC or 380V AC; the charging module is used to convert the electric energy of the external power supply into DC power matching the energy storage unit.

Further, the control module is further configured to acquire state information from the high voltage generator or the controller of the CT apparatus, and the preset condition is met, specifically including: the high voltage generator is in a non-loading state.

Further, the control module includes a status interface, and the status interface is connected to the controller of the high-voltage generator or the CT device.

Further, each energy storage module also includes a monitoring unit, and each monitoring unit is connected to the control module; the control module is also used to obtain the power of the corresponding energy storage unit through the monitoring unit.

Further, the preset condition is satisfied, which specifically includes: the electric quantity of the energy storage unit supplying power to the output terminal is lower than a preset threshold.

A CT device includes the above-mentioned CT power supply device and a high-voltage generator; the CT power supply device is used to supply power to the high-voltage generator.

A CT inspection vehicle includes a vehicle body and the aforementioned CT device, and the CT device is fixed on the vehicle body.

Compared with the prior art, the beneficial effect of the embodiment of the present invention is that: the energy storage module is used to supply power to the high-voltage generator without direct power supply from the power grid, thereby expanding the use place of the CT device; and avoiding the fluctuation of the alternating current of the power grid When it is large, it will cause interference to CT detection; further by setting at least two energy storage modules, and when the preset conditions are met, the controller controls the energy storage module that supplies power to the output terminal to stop power supply, and controls at least one other energy storage module The energy storage module supplies power to the output terminal, so as to realize the power supply of each energy storage module in turn, which can ensure the quality of power supply to the high-voltage generator, for example, the amplitude of the voltage provided can meet the normal operation requirements of the high-voltage generator.

Description of drawings

FIG. 1 is a schematic structural diagram of a CT power supply device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a high voltage generator.

Fig. 3 is a schematic structural diagram of a CT power supply device provided by an embodiment of the present invention.

In the figure: 100, CT power supply device; 110, output terminal; 120, control module; 130, energy storage module; 131, energy storage unit; 132, switch unit; 101, controlled terminal; 102, public terminal; 103, 104, charging terminal; 133, monitoring unit; 140, charging module; 141, input terminal; 200, high voltage generator; 210, inverter; 220, step-up transformer; 230, high voltage rectifier.

Detailed ways

Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

FIG. 1 is a schematic structural diagram of a CT power supply device 100 .

The CT power supply device 100 includes an output terminal 110 , a control module 120 and at least two energy storage modules 130 . Wherein, the output end 110 is used for connecting the high voltage generator 200 , and each energy storage module 130 is connected to the output end 110 .

As a preferred implementation manner, the output end 110 includes a DC bus, and each energy storage module 130 is connected to the DC bus.

Whether each energy storage module 130 supplies power to the output terminal 110 is controlled by the control module 120 . When the high voltage generator 200 is working, at least one energy storage module 130 supplies power to the high voltage generator 200 through the output terminal 110 .

As a preferred embodiment, as shown in FIG. 2 , the high voltage generator 200 includes an inverter 210 , a step-up transformer 220 and a high voltage rectifier 230 connected in sequence. The inverter 210 converts the DC power obtained from the output terminal 110 of the CT power supply device 100 into AC power, and the AC power is boosted by the step-up transformer 220 and then rectified into high-voltage DC power by the high-voltage rectifier 230, and then the high-voltage DC power is output to the CT device. x-ray tube.

Therefore, the CT power supply device 100 provided by the embodiment of the present invention does not require direct power supply from the power grid, thereby expanding the use place of the CT device. CT detection is performed on objects; and the impact of grid voltage and frequency fluctuations on the output of the CT power supply device 100 is avoided, thereby avoiding interference to CT detection caused by large AC power fluctuations in the grid.

When the preset condition is satisfied, the controller controls the energy storage module 130 supplying power to the output terminal 110 to stop supplying power, and controls at least another energy storage module 130 to supply power to the output terminal 110 .

Due to the limited capacity of a single energy storage module 130, when one or some energy storage modules 130 supply power to the output terminal 110, and the energy storage module 130 meets certain conditions, it needs to be controlled by the controller to switch to another Or some other energy storage modules 130 supply power to the output terminal 110 . In this way, multiple energy storage modules 130 can circulate power to the high voltage generator 200 through the output terminal 110 .

The CT power supply device 100 provided by the embodiment of the present invention supplies power to the high-voltage generator 200 through the energy storage module 130, and does not require direct power supply from the power grid, thereby expanding the use place of the CT device; and avoiding large fluctuations in the AC power of the power grid Interference with CT detection.

Further by setting at least two energy storage modules 130, and when the preset condition is satisfied, the controller controls the energy storage module 130 that supplies power to the output terminal 110 to stop supplying power, and controls at least another energy storage module 130 to output 110 to supply power to each energy storage module 130 in turn. On the one hand, the quality of the power supply to the high voltage generator 200 can be guaranteed, for example, the amplitude of the voltage provided can meet the requirements for the normal operation of the high voltage generator 200. On the other hand, it is beneficial to the storage The energy storage module 130 can be rested or maintained when the power supply is stopped, so as to prolong the service life of the energy storage module 130.

As a preferred embodiment, each energy storage module 130 includes an energy storage unit 131 and a switch unit 132 , and each energy storage unit 131 is connected to the output terminal 110 through a corresponding switch unit 132 . The control module 120 controls whether the corresponding energy storage unit 131 supplies power to the output terminal 110 through the switch unit 132 .

As a preferred embodiment, the switch unit 132 includes a controlled terminal 101, a common terminal 102 and a working terminal 103, the controlled terminal 101 is connected to the control module 120, the common terminal 102 is connected to the corresponding energy storage unit 131, and the working terminal 103 is connected to the Output terminal 110 ; when the high voltage generator 200 is in an unloaded state, the control module 120 is used to control the connection or disconnection of the common terminal 102 and the working terminal 103 through the controlled terminal 101 .

Exemplarily, the switching unit 132 includes an electromagnetic relay or a power switching device. When the control module 120 sends the first command to the controlled terminal 101 of the switch unit 132, the common terminal 102 of the switch unit 132 communicates with the working terminal 103; when the control module 120 sends the second command to the controlled terminal 101 of the switch unit 132 or When the first instruction is sent again, the common terminal 102 and the working terminal 103 of the switch unit 132 are disconnected. The first instruction and the second instruction can be digital codes, and can also be high level or low level.

As a preferred embodiment, as shown in FIG. 3 , the CT power supply device 100 further includes a charging module 140 , and the switch unit 132 also includes a charging terminal 104 , and the charging terminal 104 of each switching unit 132 is connected to the charging module 140 .

In this embodiment, the switch unit 132 includes a relay, and the relay includes a coil (not shown), a normally closed contact 1, a movable contact 2 and a normally open contact 3, and the controlled terminal 101 is drawn from the coil, and the movable contact 2 The common end 102 is drawn out, the normally open contact 3 is led out to the working end 103 , and the normally closed contact 1 is led out to the charging end 104 .

When the control module 120 controls the common terminal 102 and the working terminal 103 to be disconnected through the controlled terminal 101 , the common terminal 102 and the charging terminal 104 are turned on.

When one or some energy storage modules 130 supply power to the output terminal 110, and the energy storage module 130 meets certain conditions, the control module 120 controls the common terminal 102 and the working terminal of the switch unit 132 in the energy storage module 130 103 is disconnected, and its common terminal 102 and charging terminal 104 are turned on at the same time. When the charging module 140 is connected to an external power supply, the charging module 140 supplies energy to the energy storage unit 131 in the energy storage module 130 through the charging terminal 104 and the common terminal 102. Charging realizes the maintenance and charging of the energy storage unit 131 in the non-power supply state. The control module 120 controls at least another energy storage module 130 to supply power to the output terminal 110 when the common terminal 102 and the working terminal 103 of the switch unit 132 in the energy storage module 130 are controlled to be disconnected. In this embodiment, the switching time of the switching unit 132 can reach 0.1 second, so as to realize the seamless switching of the energy storage module 130 and reduce the impact on the high voltage generator 200 .

As a preferred embodiment, the charging module 140 includes an input terminal 141 for connecting to an external power source (not shown in the figure), and the external power source is 220V AC or 380V AC.

As a preferred implementation manner, the charging module 140 includes a transformer (not shown in the figure) and an AC/DC conversion unit (not shown in the figure). The charging module 140 is used for converting the electric energy of the external power supply into direct current matching the energy storage unit 131 .

As a further improvement of the embodiment of the present invention, the control module 120 is also used to obtain status information from the high voltage generator 200 or the controller of the CT device, and the preset conditions are met, specifically including: the high voltage generator 200 is in a non-loading state.

The X-ray machine used for exposure usually works intermittently, and the time of each exposure is not long, generally tens of milliseconds, the maximum is several seconds; there is a time interval between two exposures, at this time the high voltage generator 200 in a non-loading state. The time interval between two exposures is generally several seconds or tens of seconds, and the maximum may exceed one minute; therefore, the time interval between two exposures, that is, the non-loaded state of the high voltage generator 200 can be used to perform energy storage module 130 The switching of the energy storage module 130 avoids the impact of the switching of the energy storage module 130 on the high voltage generator 200 and the X-ray machine.

As a preferred embodiment, the control module 120 includes a status interface (not shown in the figure), and the status interface is connected to the high voltage generator 200 or the controller of the CT device. The control module 120 acquires status information from the high voltage generator 200 or the controller of the CT device through the status interface. The control module 120 judges whether the high voltage generator 200 is in an unloaded state according to the voltage or current somewhere in the high voltage generator 200, or the controller of the high voltage generator 200 or the CT device will indicate whether the high voltage generator 200 is in an unloaded state The status information is sent to the control module 120 .

As a preferred embodiment, each energy storage module 130 also includes a monitoring unit 133, and each monitoring unit 133 is connected to the control module 120; the control module 120 is also used to obtain the power of the corresponding energy storage unit 131 through the monitoring unit 133.

In this embodiment, the monitoring unit 133 calculates the power of the corresponding energy storage unit 131 by monitoring the voltage value of the corresponding energy storage unit 131 and then sends the power information to the control module 120; The voltage value of the corresponding energy storage unit 131 obtained by the unit 133 calculates the electric quantity of the corresponding energy storage unit 131 .

As a preferred implementation manner, the preset condition is satisfied, which specifically includes: the power of the energy storage unit 131 supplying power to the output terminal 110 is lower than a preset threshold. That is, when the power of the energy storage module 130 supplying power to the output terminal 110 is low, the control module 120 controls the energy storage module 130 to stop supplying power, and controls at least another energy storage module 130 to supply power to the output terminal 110 .

As a preferred embodiment, when the power of the energy storage module 130 supplying power to the output terminal 110 is lower than a preset threshold and the high voltage generator 200 is in a non-loading state, the preset condition is met, and the controller controls the power supply to the energy storage module The group 130 stops power supply, and controls at least another energy storage module 130 to supply power to the output terminal 110 .

The CT power supply device 100 provided by the embodiment of the present invention can be applied to a CT device, and the CT device includes the aforementioned CT power supply device 100 and the high voltage generator 200 ; the CT power supply device 100 is used to supply power to the high voltage generator 200 . Other parts of the CT apparatus can be implemented by existing technologies, and the present invention does not involve improvement on this, so details will not be described here.

The embodiment of the present invention also provides a CT detection vehicle, which includes a vehicle body and the aforementioned CT device, and the CT device is fixed on the vehicle body. Since the CT power supply device 100 of the CT device does not require direct power supply from the power grid, the use of the CT device has been expanded. For example, the CT device using the CT power supply device 100 can be implemented on a vehicle, and CT can be performed on people or objects in the wild and remote places. detection

The above-mentioned embodiment is only a preferred embodiment of the present invention, and cannot be used to limit the protection scope of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (10)

1. A CT power supply device, characterized in that: comprising an output end, a control module and at least two energy storage modules, the output end is used to connect a high-voltage generator; each energy storage module is connected to the output end , and the control module controls whether to supply power to the output terminal; When the preset condition is satisfied, the controller controls the energy storage module supplying power to the output terminal to stop supplying power, and controls at least another energy storage module to supply power to the output terminal. 2. The CT power supply device according to claim 1, wherein each energy storage module includes an energy storage unit and a switch unit, and each energy storage unit is connected to the output end through a corresponding switch unit; The control module controls whether the corresponding energy storage unit supplies power to the output terminal through the switch unit. 3. The CT power supply device according to claim 2, wherein the switch unit includes a controlled terminal, a common terminal and a working terminal, the controlled terminal is connected to the control module, and the common terminal is connected to For the corresponding energy storage unit, the working end is connected to the output end; when the high voltage generator is in an unloaded state, the control module is used to control the communication between the common end and the working end through the controlled end or disconnect. 4. The CT power supply device according to claim 3, characterized in that: it also includes a charging module, the switch unit also includes a charging terminal, and the charging terminals of each switch unit are connected to the charging module; the control module When the controlled end controls the common end and the working end to be disconnected, the common end and the charging end are turned on. 5. The CT power supply device according to claim 4, characterized in that: the charging module includes an input terminal for connecting to an external power supply, and the external power supply is 220V alternating current or 380V alternating current; The electrical energy is converted into direct current matching the energy storage unit. 6. The CT power supply device according to claim 2, characterized in that: the control module is also used to obtain status information from the high-voltage generator or the controller of the CT device, and the preset conditions are met, specifically including: the The high voltage generator is in an unloaded state. 7. The CT power supply device according to claim 6, characterized in that: each energy storage module also includes a monitoring unit, and each monitoring unit is connected to the control module; the control module is also used to pass the monitoring The unit obtains the power of the corresponding energy storage unit. 8 . The CT power supply device according to claim 7 , wherein the preset condition is met, specifically further comprising: the power of the energy storage unit supplying power to the output terminal is lower than a preset threshold. 9. A CT device, characterized in that it comprises a CT power supply device and a high-voltage generator according to any one of claims 1-8; the CT power supply device is used to supply power to the high-voltage generator. 10. A CT inspection vehicle, characterized by comprising a vehicle body and the CT device according to claim 9, the CT device being fixed to the vehicle body.