Safety control system of industrial CT scanning device

Abstract

The invention provides a safety control system for an industrial CT scanning device, and the system comprises a plurality of detection loops which are respectively connected with a plurality of to-be-detected parts of the industrial CT scanning device, and respectively output detection signals to a first safety control module and a second safety control module; the first safety control module is used for receiving a plurality of first detection signals from a plurality of first detection loops in the plurality of detection loops, outputting equipment control signals based on comparison between the plurality of first detection signals and preset reference signals, and sending the equipment control signals to all equipment controllers in the industrial CT scanning device; and the second safety control module is used for receiving a plurality of second detection signals from a plurality of second detection loops in the plurality of detection loops, outputting an equipment control signal based on comparison of the plurality of second detection signals and a preset reference signal, and sending the equipment control signal to an X-ray machine controller in the industrial CT scanning device.

Description

Technical Field

[0001] The present invention relates to the field of safety control, and in particular, to a safety control system for an industrial CT scanning device. Background Art

[0002] With the development of CT (computerized tomography, computerized tomography) devices, which are becoming more automated, lightweight, diversified, fast in detection and simple in operation, they have been widely used in more medical scenarios. In addition to daily use, safety is also urgently needed in the process of equipment detection. In general, the safety management mechanism of the equipment plays a very important role in safe work, ensuring the life safety of operators and the normal operation of the equipment. In addition, based on risk assessment, safer, more humane and automated requirements are put forward for the scanning control of industrial CT devices in view of the safety use of diversified working conditions, the environmental limitations of the equipment and the professional requirements of personnel. For example, when the equipment fails, malfunctions or the operator makes a mistake, it may be necessary to immediately protect the personal safety of personnel and the safety of the equipment, that is, to completely shut down the entire system. Or when some minor problems occur, it is also possible to inspect and repair the equipment while only shutting down some functions. Therefore, a flexible safety control system is needed. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a safety control system for an industrial CT scanning device, which mainly solves the problem of the lack of a flexible safety control system for an industrial CT scanning device in the prior art.

[0004] The objective of the present invention is achieved through the following solutions:

[0005] According to an embodiment of the present invention, a safety control system for an industrial CT scanning device is provided, comprising: a plurality of detection circuits, respectively connected to a plurality of components to be detected of the industrial CT scanning device, and each outputting a detection signal to a first safety control module and a second safety control module; a first safety control module, receiving a first plurality of detection signals from a first plurality of detection circuits among the plurality of detection circuits, outputting a device control signal based on a comparison between the first plurality of detection signals and a preset reference signal, and sending the device control signal to all device controllers in the industrial CT scanning device; and a second safety control module, receiving a second plurality of detection signals from a second plurality of detection circuits among the plurality of detection circuits, outputting a device control signal based on a comparison between the second plurality of detection signals and a preset reference signal, and sending the device control signal to an X-ray machine controller in the industrial CT scanning device.

[0006] According to an embodiment of the present invention, the components to be detected in the first plurality of detection circuits are an emergency stop button, an emergency stop box, and a reset button.

[0007] According to an embodiment of the present invention, all device controllers include contactors, brake relays, motor drivers and X-ray machine controllers.

[0008] According to an embodiment of the present invention, the components to be detected in the second plurality of detection circuits include a radiation lock, a dose monitor, and a travel switch.

[0009] According to an embodiment of the present invention, each detection loop is a double loop.

[0010] According to an embodiment of the present invention, each detection loop is a normally closed loop.

[0011] According to an embodiment of the present invention, the plurality of components to be detected are connected to the first safety control module and the second safety control module via cables.

[0012] According to an embodiment of the present invention, the component to be detected further includes an expansion interface.

[0013] According to an embodiment of the present invention, the safety control system of the industrial CT scanning device further includes an indicator light which lights up when the first safety control module or the second safety control module generates an output signal.

[0014] According to an embodiment of the present invention, the safety control system of the industrial CT scanning device further includes an alarm to issue an alarm when the first safety control module or the second safety control module generates an output signal.

[0015] Compared with the prior art, the present invention has the following beneficial effects: by setting up a two-level safety control module, the system's safety control over the equipment is more flexible; and by setting up a dual loop, a normally closed loop and a cable connection, the stability of the system is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0017] Figure 1 The figure is a schematic diagram of the composition of a safety control system of an industrial CT scanning device according to an embodiment of the present invention.

[0018] Figure 2 Schematic diagram of the connection of the first safety control module according to an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of the connection of the second safety control module according to an embodiment of the present invention.

[0020] Figure 4Schematic diagram of the circuit structure of the first safety control module according to an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of the circuit structure of the second safety control module according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] Before proceeding to the following detailed description, it may be advantageous to set forth the definitions of certain words and phrases used throughout this patent document. The terms "coupling", "connection" and their derivatives refer to any direct or indirect communication or connection between two or more elements, regardless of whether those elements are in physical contact with each other. The terms "transmission", "reception" and "communication" and their derivatives cover direct and indirect communication. The terms "include" and "comprising" and their derivatives refer to including but not limited to. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives refer to including, including within, interconnecting, containing, contained within, connecting or connecting with, coupling or coupling with, communicating with, cooperating, interweaving, parallel, close to, binding or binding with, having, having attributes, having a relationship or having a relationship with, etc. The term "controller" refers to any device, system or part thereof that controls at least one operation. Such a controller can be implemented with hardware, or a combination of hardware and software and / or firmware. The functions associated with any particular controller can be centralized or distributed, whether local or remote. The phrase "at least one of", when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one of the items in the list may be required. For example, "at least one of A, B, C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, A and B and C.

[0023] Definitions for other specific words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior and future uses of such defined words and phrases.

[0024] In this patent document, the application combination of modules and the division level of sub-modules are only used for illustration, and the application combination of modules and the division level of sub-modules may have different forms without departing from the scope of the present disclosure.

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] As described in the background technology, the prior art lacks a flexible safety control system for industrial CT scanning devices. Figure 1 As shown, according to an embodiment of the present invention, a safety control system for an industrial CT scanning device is provided, comprising: a plurality of detection circuits, respectively connected to a plurality of components to be detected of the industrial CT scanning device, and each outputting a detection signal to a first safety control module and a second safety control module; a first safety control module, receiving a first plurality of detection signals from a first plurality of detection circuits among the plurality of detection circuits, outputting a device control signal based on a comparison between the first plurality of detection signals and a preset reference signal, and sending the device control signal to all device controllers in the industrial CT scanning device; a second safety control module, receiving a second plurality of detection signals from a second plurality of detection circuits among the plurality of detection circuits, outputting a device control signal based on a comparison between the second plurality of detection signals and a preset reference signal, and sending the device control signal to an X-ray machine controller in the industrial CT scanning device. By setting up a two-level safety control module, the system has more flexibility in safety control of the device.

[0027] In detail, for situations that require immediate protection of personnel and equipment safety, such as Figure 2 As shown, according to an embodiment of the present invention, the components to be detected in the first plurality of detection circuits are an emergency stop button, an emergency stop box, and a reset button. These components mean that the entire device must be completely shut down to achieve a protective effect, such as when the device completely fails, malfunctions, or when the operator makes a serious mistake. After these detection circuits complete the collection of safety signals for these components and send them to the first safety control module, the first safety control module outputs a device control signal indicating that the device is stopped or shut down. According to an embodiment of the present invention, all device controllers include contactors, brake relays, motor drivers, and X-ray machine controllers. Of course, if other sub-devices are also included, the device control signal can also include a sub-control signal indicating that it is shut down. In addition, as long as any one of the components detects a press signal, the entire device can be shut down.

[0028] In addition, for scenarios where only some equipment (e.g., X-ray machine controller) needs to be shut down, such as when the radiation dose exceeds the standard, Figure 3 As shown, according to an embodiment of the present invention, the components to be detected in the second plurality of detection circuits include a radiation lock, a dose monitor, and a travel switch.

[0029] In addition, in order to ensure the stability of the system, according to an embodiment of the present invention, each detection circuit is a dual circuit. When the safety signal input adopts a dual circuit design, even if one circuit fails, the other circuit can still work normally, ensuring that the device is still running in a safe state.

[0030] In addition, in order to further ensure the stability of the system, according to an embodiment of the present invention, each detection loop is a normally closed loop. If other types of designs are used, there is no way to stop the device if the line is disconnected or there is a problem with the signal device, which is more dangerous. Using a normally closed design, even if a normally closed loop fails, better feedback can be provided.

[0031] In detail, Figure 4 As shown, it can be seen that the first safety control module is connected to multiple emergency stop devices, and a normally closed circuit is adopted, so that any emergency stop device being pressed will cause a circuit break, thereby generating different detection signals. In addition, it can be seen that a dual-circuit design is adopted to ensure stability through redundancy. In addition, the connection with the controllers of other devices (such as power supply control, brake control, pneumatic control) and the output device status display are also shown.

[0032] Similarly, if Figure 5 As shown, it can be seen that the second safety control module is connected to multiple components to be detected in the radiation protection area, and a normally closed circuit is adopted, so that any component to be detected will cause a circuit break when it detects radiation, thereby generating different detection signals. Similarly, stability is ensured by redundancy. In addition, the connection with the ray controller and the output device status display, warning indication and PLC (programmable logic controller) are also shown.

[0033] In addition, in order to further ensure the stability of the system, according to an embodiment of the present invention, the plurality of components to be detected are connected to the first safety control module and the second safety control module via cables. Direct connection via cables without using other devices for conversion and transmission avoids delays and increases system reliability.

[0034] In addition, in order to increase the flexibility of the system, such as Figure 2-Figure 5 As shown, the component to be detected also includes an expansion interface so that the operator can make an emergency stop at an appropriate place, or make the system's monitoring of the sub-equipment more complete.

[0035] In addition, in order to better indicate the status of the device detected by the safety control system, such as Figure 3 As shown, according to an embodiment of the present invention, the safety control system of the industrial CT scanning device further includes an indicator light to light up when the first safety control module or the second safety control module generates an output signal. Generally, when a change in the safety signal is detected, a red light is turned on to warn people around.

[0036] Similarly, to make the warning richer, such as Figure 2As shown, according to an embodiment of the present invention, the safety control system of the industrial CT scanning device further includes an alarm to sound an alarm when the first safety control module or the second safety control module generates an output signal. The alarm can generate a buzzer alarm signal, etc., so that people within a certain range can be informed of the occurrence of an emergency in a timely manner.

[0037] Reference again Figure 2 and Figure 3 , and also shows a power supply module, such as a power supply. Of course, other circuit modules necessary for realizing the circuit function are also included, but in order to unnecessarily obscure the key points of the present concept, these circuit modules are not described in detail.

[0038] The present invention may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present invention.

[0039] Computer readable storage medium can be a tangible device that holds and stores instructions used by an instruction execution device. Computer readable storage medium can include, for example, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination thereof. More specific examples (non-exhaustive list) of computer readable storage medium include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, for example, a punch card or a protruding structure in a groove on which instructions are stored, and any suitable combination thereof.

[0040] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A safety control system for an industrial CT scanning device, characterized in that: include: A plurality of detection circuits are respectively connected to a plurality of components to be detected of the industrial CT scanning device, and each outputs a detection signal to the first safety control module and the second safety control module; a first safety control module, receiving a first plurality of detection signals from a first plurality of detection loops among the plurality of detection loops, outputting a device control signal based on a comparison between the first plurality of detection signals and a preset reference signal, and sending the device control signal to all device controllers in the industrial CT scanning device; The second safety control module receives a second plurality of detection signals from a second plurality of detection circuits among the plurality of detection circuits, outputs a device control signal based on a comparison between the second plurality of detection signals and a preset reference signal, and sends the device control signal to an X-ray machine controller in the industrial CT scanning device.

2. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: The components to be detected in the first plurality of detection circuits are an emergency stop button, an emergency stop box, and a reset button.

3. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: All equipment controllers including contactors, brake relays, motor drivers and X-ray machine controllers.

4. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: The components to be detected in the second plurality of detection circuits include a radiation lock, a dose monitor, and a travel switch.

5. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: Each detection circuit is a double circuit.

6. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: Each detection circuit is a normally closed circuit.

7. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: The plurality of components to be detected are connected to the first safety control module and the second safety control module through cables.

8. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: The component to be detected also includes an expansion interface.

9. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: An indicator light is also included to light up when the first safety control module or the second safety control module generates an output signal.

10. The safety control system of an industrial CT scanning device according to claim 1, characterized in that: An alarm is also included to sound an alarm when the first safety control module or the second safety control module generates an output signal.

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