CN112118026A - Communication system and communication switching method of high-pressure injection system - Google Patents
Communication system and communication switching method of high-pressure injection system Download PDFInfo
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- CN112118026A CN112118026A CN202011066015.XA CN202011066015A CN112118026A CN 112118026 A CN112118026 A CN 112118026A CN 202011066015 A CN202011066015 A CN 202011066015A CN 112118026 A CN112118026 A CN 112118026A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
- H04B1/745—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus using by-passing or self-healing methods
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Abstract
The invention discloses a communication system and a communication switching method of a high-pressure injection system, wherein the communication system comprises a first console and a second console, the first console is used for controlling a high-pressure injector in a checking room, the second console is used for controlling the first console in the checking room, and a first control circuit of the first console is respectively connected with a first wireless communication unit and a cable in a pluggable manner; the second control circuit of the second console is connected with the second wireless communication unit and the cable in a pluggable mode. When the high-pressure injection system is implemented, the first control circuit outputs a wired communication request signal according to the received first wireless communication unit access signal and the cable access signal, outputs a wireless communication request signal according to the received first wireless communication unit access signal only, and is in wired or wireless communication connection with the second control circuit according to the wired communication confirmation signal or the wireless communication confirmation signal returned by the second control circuit, so that the problems that the communication of the high-pressure injection system is single and cannot be switched, and a user cannot select a required communication mode according to an application scene are solved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a communication system and a communication switching method of a high-pressure injection system.
Background
The high-pressure injection device and accessories such as a syringe and the like form a high-pressure injection system, and the high-pressure injection system is widely applied to the examination and treatment of clinical cardiovascular radiography examination, CT enhanced radiography scanning, MR enhanced scanning and the like. The basic function of the high-pressure injection system is to rapidly and accurately inject a certain dose of contrast agent/drug into an examination site within a set time, so as to facilitate imaging of the contrast device and meet clinical examination and treatment requirements of patients.
A typical application example of the high-pressure injection system is shown in fig. 1, and it can be seen from fig. 1 that the high-pressure injection system is distributed in two rooms, a main body part is disposed in an examination room 10, and a remote control console is disposed in a control room 20, wherein the main body part mainly includes: a frame 104, an injection arm 102, a console 101 at the host end, a syringe 103, a needle tube 105, a needle 106, and the like. The main body part disposed in the examination room 10 can perform the whole task of injection, however, the apparatus applied to the radiography of CT machine, X-ray machine, etc. needs a remote control console 201 (disposed in the control room 20 to avoid radiation and interference) to realize remote control. The remote console 201 and the near host portion are wired conventionally, which requires a long cable 30 (possibly up to 30 meters) and the cable 30 needs to span two rooms, which causes inconvenience to construction, use, and management.
In the prior art, although there are high-pressure injection systems in which a remote console is connected to a proximal host portion by wireless communication, they do not support wired communication. Therefore, the communication system of the existing high-pressure injection system has a single communication mode, does not support the switching between wired communication and wireless communication, and a user cannot select a required communication mode according to an application scene, so that the flexibility of communication is not facilitated.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a communication system and a communication switching method for a high-pressure injection system, aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
in a first aspect, the present invention provides a communication system of a high-pressure injection system, comprising a first console for controlling a high-pressure injector in an examination room and a second console for controlling the first console in a control room, wherein a first control circuit of the first console is connected with a first wireless communication unit and a cable in a pluggable manner; the second control circuit of the second console is connected with the second wireless communication unit and the cable in a pluggable manner respectively;
the first wireless communication unit outputs a first wireless communication unit access signal when being connected with the first control circuit; the second control circuit when connected with the cable outputs a cable access signal when connected with the first control circuit;
the first control circuit outputs a wired communication request signal through the cable when receiving the first wireless communication unit access signal and the cable access signal or only receiving the cable access signal; the first control circuit outputs a wireless communication request signal through the first wireless communication unit when receiving the first wireless communication unit access signal and not receiving the cable access signal;
the second control circuit returns a wired communication confirmation signal to the first control circuit through the cable when receiving the wired communication request signal so that the first control circuit is in wired communication connection with the second control circuit after receiving the wired communication confirmation signal; and when receiving the wireless communication request signal, the second control circuit returns a wireless communication confirmation signal to the first control circuit through the second wireless communication unit so that the first control circuit is in wireless communication connection with the second control circuit after receiving the wireless communication confirmation signal.
In one embodiment, preferably, the first control circuit comprises a first controller, a first wireless identification circuit, a wired identification circuit and a first communication switching chip; the first wireless identification end of the first controller is connected with the output end of the first wireless identification circuit, the wired identification end is connected with the output end of the wired identification circuit, and the first serial port is connected with the first end of the first communication switching chip;
when the first wireless communication unit is connected with the first control circuit, the data transceiving end of the first wireless communication unit is connected with the second serial port of the first controller, and the first signal ground end of the first wireless communication unit is connected with the output end of the first wireless identification circuit;
when the cable is connected with the first control circuit, the output end of the wired identification circuit is connected with the identification line of the cable, and the second end of the first communication switching chip is connected with the data line of the cable;
the first controller outputs the wired communication request signal through the first serial port when the first wireless identification terminal receives the first wireless communication unit access signal through the first wireless identification circuit and when the wired identification terminal receives the cable access signal through the wired identification circuit, or only receives the cable access signal; and the first controller outputs the wireless communication request signal through the second serial port when the first wireless identification end receives the first wireless communication unit access signal and when the wired identification end does not receive the cable access signal.
In another embodiment, preferably, the first control circuit includes a first controller, an analog switch, a first wireless identification circuit, a wired identification circuit, and a first communication switching chip; the first wireless identification end of the first controller is connected with the output end of the first wireless identification circuit, the wired identification end is connected with the output end of the wired identification circuit, the control end is connected with the controlled end of the analog switch, and the first serial port is connected with the first end of the analog switch; the second end of the analog switch is connected with the first end of the first communication switching chip;
when the first wireless communication unit is connected with the first control circuit, a data transceiving end of the first wireless communication unit is connected with a third end of the analog switch, and a first signal ground end of the first wireless communication unit is connected with an output end of the first wireless identification circuit;
when the cable is connected with the first control circuit, the data wire of the cable is connected with the second end of the first communication switching chip, and the identification wire of the cable is connected with the output end of the wired identification circuit;
the first controller outputs the wired communication request signal through the first serial port and outputs a first control signal through the control terminal when the first wireless identification terminal receives the first wireless communication unit access signal through the first wireless identification circuit and the wired identification terminal receives the cable access signal through the wired identification circuit, or only receives the cable access signal; the first controller outputs the wireless communication request signal through the first serial port and outputs a second control signal through the control end when the first wireless identification end receives the first wireless communication unit access signal and the wired identification end does not receive the cable access signal;
the analog switch is electrically disconnected with the first wireless communication unit when the controlled end receives the first control signal, and is switched to be electrically connected with the first communication switching chip and outputs the wired communication request signal through the second end; and the analog switch disconnects the electric connection with the first communication switching chip when receiving the second control signal, switches to the electric connection with the first wireless communication unit and outputs the wireless communication request signal through a second end. Preferably, the first wireless identification circuit comprises a first pull-up resistor R1, a first end of the first pull-up resistor R1 is an input end of the first wireless identification circuit connected with a power supply VCC, and a second end is an output end of the first wireless identification circuit;
preferably, the wired identification circuit includes a second pull-up resistor R2, a first end of the second pull-up resistor R2 is an input end of the wired identification circuit connected to the power supply VCC, and a second end is an output end of the wired identification circuit.
Optionally, the first communication switching chip is any one of the following: the system comprises an RS485 communication switching chip, an RS422 communication switching chip, a CAN bus communication switching chip and an Ethernet communication switching chip;
the first wireless communication unit is any one of the following: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit.
Preferably, the second control circuit comprises a second controller, a signal ground, a second wireless identification circuit and a second communication switching chip; a third serial port of the second controller is connected with a first end of the second communication switching chip, and a second wireless identification end is connected with an output end of the second wireless identification circuit;
when the second wireless communication unit is connected with the second control circuit, the data transceiving end of the second wireless communication unit is connected with the fourth serial port of the second controller, and the second signal ground end of the second wireless communication unit is connected with the output end of the second wireless identification circuit;
when the cable is connected with the second controller, the identification line of the cable is connected with a signal ground, and the data line of the cable is connected with the second end of the second communication switching chip;
the second controller returns a wired communication confirmation signal or a wireless communication confirmation signal to the first control circuit through the cable or the second wireless communication unit according to the wired communication request signal received by the third serial port or according to the wireless communication request signal received by the fourth serial port;
the first control circuit is connected with the second controller in wired communication or wireless communication according to the received wired communication confirmation signal or wireless communication confirmation signal.
Preferably, the second wireless identification circuit comprises a third pull-up resistor R3, the first end of the third pull-up resistor R3 is the input end of the second wireless identification circuit connected to the power supply VCC, and the second end is the output end of the second wireless identification circuit.
Optionally, the second communication switching chip is any one of the following: the system comprises an RS485 communication switching chip, an RS422 communication switching chip, a CAN bus communication switching chip and an Ethernet communication switching chip;
the second wireless communication unit is any one of: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit.
In a second aspect, the present invention provides a communication switching method applied to the communication system of the high pressure injection system, the method comprising:
s1: a first control circuit of a first console enters a wired and wireless communication access detection mode; the wired and wireless communication access detection modes include: the first control circuit detects and receives a first wireless communication unit access signal output by the first wireless communication unit in real time through the first wireless identification circuit, and detects and receives a cable access signal output by a second control circuit of the second console through a cable in real time through the wired identification circuit;
s2: the first controller determines the signal received in step S1, and if the signal is the cable access signal and the first wireless communication unit access signal or the cable access signal alone, the process goes to step S3, and if the signal is the first wireless communication unit access signal, the process goes to step S5;
s3: the first controller enters a wired communication test mode; the wired communication test mode includes: the first controller sends a wired communication request signal to the second controller through the cable and receives a wired communication confirmation signal returned by the second controller, if the first controller receives the wired communication confirmation signal, the step S4 is carried out, otherwise, the step S5 is carried out;
s4: the first controller selects a wired communication mode and receives a high-pressure injection task control instruction sent by the second controller through the cable;
s5: the first controller enters a wireless communication test mode; the wireless communication test mode comprises: the first controller sends a wireless communication request signal to a second wireless communication unit of the second controller through a first wireless communication unit, and receives a wireless communication confirmation signal returned by the second controller through the second wireless communication unit, if the first controller receives the wireless communication confirmation signal, the step S6 is performed, otherwise, the step S7 is performed;
s6: the first controller selects a wireless communication mode and receives the high-pressure injection task control instruction sent by the second controller through the second wireless communication unit through the first wireless communication unit;
s7: and the first controller judges whether the selected communication connection is overtime or not, outputs system communication fault alarm information if the selected communication connection is overtime, and repeatedly executes the steps S1-S7 if the selected communication connection is not overtime.
In an optional embodiment, before the step S1, the method further includes:
s1-1: the first controller enters a self-checking mode to detect whether the high-pressure injector meets parameter information required by normal operation, if the self-checking is successful, the step S1-2 is carried out, and if not, the step S1-3 is carried out;
s1-2: the first controller enters a user setting working mode, and after receiving a setting completion instruction, the first controller enters a step S1; the user setting working mode is used for setting parameters related to an injection task;
s1-3: and the first controller outputs self-checking fault alarm information.
The communication system of the high-pressure injection system has the following beneficial effects:
in specific implementation, a user can selectively insert a cable and/or a first wireless communication unit into the first control circuit and insert the cable and/or a second wireless communication unit into the second control circuit, the first control circuit in the communication system can output a wired communication request signal to the second control circuit according to a received first wireless communication unit access signal and a cable access signal, or output a wired communication request signal to the second control circuit according to only a received cable access signal, output a wireless communication request signal to the second control circuit according to only a received first wireless communication unit access signal, and be connected with the second control circuit in a wired or wireless communication manner according to a wired communication confirmation signal or a wireless communication confirmation signal returned by the second control circuit, so that the problems that the communication of the high-pressure injection system cannot be switched singly and the user cannot select a required communication manner according to an application scene are solved, the flexibility of use of the high pressure injection system is improved, thereby improving the user experience.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of an application example of a conventional high pressure injection system;
FIG. 2 is a schematic block diagram of a first embodiment of a communication system of a high pressure injection system in accordance with the present invention;
FIG. 3 is a schematic structural view of a second embodiment of a communication system of a high pressure injection system provided by the present invention;
FIG. 4 is a schematic diagram of a wired identification circuit of the communication system of a high pressure injection system provided by the present invention;
FIG. 5 is a schematic diagram of a first wireless identification circuit of the communication system of a high pressure injection system provided by the present invention;
FIG. 6 is a schematic diagram of a second wireless identification circuit of the communication system of the high pressure injection system provided by the present invention;
fig. 7 is a flowchart of a communication switching method of a communication system of a high-pressure injection system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a first embodiment of a communication system of a high pressure injection system according to the present invention.
As shown in fig. 2, the communication system includes a first console for controlling the high pressure injector in the examination room and a second console for controlling the first console in the control room. The first control circuit 11 of the first console 1 is connected to the first wireless communication unit 12 and the cable 3 through the first interface 115 and the second interface 116 in a pluggable manner; the second control circuit 21 of the second console 2 is connected to the second wireless communication unit 22 and the cable 3 via the third interface 215 and the fourth interface 216; the first wireless communication unit 12 outputs a first wireless communication unit access signal when connected to the first control circuit 11; the second control circuit 21 outputs a cable access signal when connected to the cable 3 and the first control circuit 11 when connected to the cable 3; the first control circuit 11 outputs a wired communication request signal through the cable 3 when receiving the first wireless communication unit access signal and the cable access signal, or when receiving only the cable access signal; when receiving the first wireless communication unit access signal and not receiving the cable access signal, the first control circuit 11 outputs a wireless communication request signal through the first wireless communication unit 12; the second control circuit 21 returns a wired communication confirmation signal to the first control circuit 11 through the cable 3 when receiving the wired communication request signal so that the first control circuit 11 is connected with the second control circuit 21 in wired communication after receiving the wired communication confirmation signal; the second control circuit 21 returns a wireless communication confirmation signal to the first control circuit 11 through the second wireless communication unit 22 upon receiving the wireless communication request signal to make the first control circuit 11 wirelessly communicatively connect with the second control circuit 21 after receiving the wireless communication confirmation signal. .
The first wireless communication unit access signal and the cable access signal are both low level signals, and the first control circuit can receive and detect the two access signals according to different pins, so that whether the first wireless communication unit 12 is accessed or the cable 3 is accessed is distinguished.
According to the communication system of the high-pressure injection system, the communication system of the high-pressure injection system is compatible with two communication modes, namely wired communication and wireless communication, the wireless communication can reduce the difficulty of site construction, layout and wiring and is favorable for using the injector due to the fact that the communication system is not limited by cables, and the wired communication is easier to network, so that the high-pressure injection system is easier to access other wireless equipment. In addition, as long as the access signal received by the first control circuit 11 includes the cable access signal, the wired communication request signal is preferentially transmitted and the wired communication confirmation signal is received through the cable 3 to realize the wired communication connection with the second control circuit 21, so that the communication mode is switched to the wired communication, and the wired communication priority is ensured, and since data of the wired communication is not easily lost, the reliability and the security of the communication can be ensured, and when the wired communication connection fails due to an abnormality or the cable access signal is not received and the first wireless communication unit access signal is received, the wireless communication request signal is transmitted and the wireless communication confirmation signal is received through the first wireless communication unit 12 to realize the wireless communication connection with the second control circuit 21, so that the communication mode is switched to the wireless communication. The cable 3, the first wireless communication unit 12 and the first control circuit 11 can be connected in a pluggable manner, a user can select to insert the first wireless communication unit 12 and/or the cable 3 into the first control circuit 11 according to an application scene, so that the first control circuit 11 in the communication system can perform communication selection according to at least one of the received two access signals to switch the communication mode to be a required communication mode, and the use flexibility of the high-pressure injection system and the experience of the user are improved.
As shown in fig. 2, the first control circuit 11 includes a controller and its peripheral circuits, and preferably, the first control circuit 11 includes a first controller 111, a first wireless identification circuit 112, a wired identification circuit 113, and a first communication relay chip 114. The first wireless identification terminal IO2 of the first controller 111 is connected to the output terminal of the first wireless identification circuit 112, the wired identification terminal IO1 is connected to the output terminal of the wired identification circuit 113, and the first serial port UART1 is connected to the first terminal of the first communication switching chip 114. When the first wireless communication unit 12 is connected to the first control circuit 11, the data transceiving terminal of the first wireless communication unit 12 is connected to the second serial port UART2 of the first controller 111, and the first signal ground terminal of the first wireless communication unit 12 is connected to the output terminal of the first wireless identification circuit 112. When the cable 3 is connected to the first control circuit 11, the output end of the wired identification circuit 113 is connected to the identification line of the cable 3, and the second end of the first communication adapter chip 114 is connected to the data line of the cable 3. The circuit structure is simple, the first wireless identification terminal IO2 and the wired identification terminal IO1 receive the level signals of the output terminals of the first wireless identification circuit 112 and the wired identification circuit 113, respectively, and when the level signals change, whether the first wireless communication unit 12 and the cable 3 are connected to the first control circuit 11 can be effectively identified.
Referring to fig. 2 and 4, preferably, the wire identification circuit 113 includes a first pull-up resistor R1, a first terminal of the first pull-up resistor R1 is an input terminal of the wire identification circuit 113 connected to the power supply VCC, and a second terminal is an output terminal of the wire identification circuit 113. When the cable 3 is connected to the first control circuit 11 and the second control circuit 21 is connected to the cable 3, the signal ground 213 of the second control circuit 21 is connected to the output terminal of the cable identification circuit 113, so that the high level signal received by the cable identification terminal IO1 is pulled down to a low level signal (i.e., a cable access signal), thereby achieving the purpose of identifying the cable 3 access.
Referring to fig. 1 and 5, preferably, the first rfid circuit 112 includes a second pull-up resistor R2, a first terminal of the second pull-up resistor R2 is an input terminal of the first rfid circuit 112 connected to the power supply VCC, and a second terminal is an output terminal of the first rfid circuit 112. When the first wireless communication unit 12 is connected to the first control circuit 11, the first signal ground of the first wireless communication unit 12 is connected to the output end of the first wireless identification circuit 112, so that the high level signal received by the wireless identification terminal IO2 is pulled down to a low level signal (i.e., a first wireless communication unit access signal), thereby achieving the purpose of identifying the access of the first wireless communication unit 22.
The first controller 111 includes, but is not limited to, a microprocessor, microcontroller, digital signal processor, microcomputer, central processing unit, field programmable gate array, programmable logic device, state machine, logic circuitry, analog circuitry, digital circuitry, and/or any device that manipulates signals (analog and/or digital) based on operational instructions. When receiving the corresponding access signal, the first controller 111 may actively send a wired or wireless communication request signal to the second control circuit 21 so as to perform wired or wireless communication connection with the second control circuit 21.
Specifically, after receiving the corresponding access signal, the first controller 111 may output a wired or wireless communication request signal to perform a wired or wireless communication test, so as to test whether the wired or wireless communication function of the communication system is normal. The first controller 111 outputs a wired communication request signal through the first serial port UART1 when the first wireless identification terminal IO2 receives a first wireless communication unit access signal through the first wireless identification circuit 112 and when the wired identification terminal IO1 receives a cable access signal through the wired identification circuit 113, or receives only a cable access signal; the first controller 111 outputs a wireless communication request signal through the second serial UART2 when the first wireless identification terminal IO2 receives the first wireless communication unit access signal and when the wired identification terminal IO1 does not receive the cable access signal. . The wired or wireless communication test can determine whether the wired or wireless communication function is normal and reliable, so that the communication system of the high-pressure injection system selects a normal communication connection mode.
The first communication switching chip 114 is any one of the following: RS485 communication switching chip, RS422 communication switching chip, CAN bus communication switching chip and Ethernet communication switching chip.
The first wireless communication unit 12 is any one of the following: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit. The first wireless communication unit 12 may be mounted on a patch panel, a first signal ground terminal of the patch panel is used for connecting with an output terminal of the first wireless identification circuit 112 when the first control circuit 11 is accessed, and a data transceiving terminal of the patch panel is used for connecting with a data transceiving terminal of the first wireless communication unit 12 and the second serial UART2 when the first control circuit 11 is accessed. There are first wireless communication units 12 with patch panels. Preferably, the first wireless communication unit 12 of the present embodiment is a ZigBee wireless communication unit. The ZigBee wireless communication unit has high safety, short time delay and low power consumption, and can well meet the communication requirement of a high-pressure injection system.
As shown in fig. 2, in the communication system of the high-pressure injection system of the present embodiment, the second control circuit 21 of the second console includes a second controller 211, a signal ground 213, a second wireless identification circuit 212, and a second communication relay chip 214. The third serial port UART3 of the second controller 211 is connected to the first end of the second communication adapter chip 214, and the second wireless identification port IO4 is connected to the output end of the second wireless identification circuit 212. When the second wireless communication unit 22 is connected to the second control circuit 21, the data transceiving terminal of the second wireless communication unit 22 is connected to the fourth serial port UART4 of the second controller 211, and the second signal ground terminal of the second wireless communication unit 22 is connected to the output terminal of the second wireless identification circuit 212. When the cable 3 is connected to the second controller 211, the identification line of the cable 3 is connected to the signal ground 213, and the data line of the cable 3 is connected to the second end of the second communication relay chip 214. The circuit has a simple structure, can realize the identification of the second wireless communication unit access signal, and returns a corresponding wired communication confirmation signal or wireless communication confirmation signal according to the received wired communication request signal or wireless communication request signal from the first control circuit 11.
The second controller 211 includes, but is not limited to, a microprocessor, microcontroller, digital signal processor, microcomputer, central processing unit, field programmable gate array, programmable logic device, state machine, logic circuitry, analog circuitry, digital circuitry, and/or any device that manipulates signals (analog and/or digital) based on operational instructions. After receiving the wired communication request signal or the wireless communication request signal, the second controller 211 may return a corresponding wired communication confirmation signal or a corresponding wireless communication confirmation signal to the first control circuit 11 to indicate that the state ready for communication connection is entered.
Specifically, the second controller 211 returns a wired communication confirmation signal or a wireless communication confirmation signal to the first control circuit 11 through the cable 3 or the second wireless communication unit 22 according to the wired communication request signal received by the third serial port UART3 or according to the wireless communication request signal received by the fourth serial port UZRT4, and the first control circuit 11 is in wired communication connection or wireless communication connection with the second controller 211 according to the wired communication confirmation signal received by the cable 3 or according to the wireless communication confirmation signal received by the first wireless communication unit 12, so as to implement wired or wireless communication connection between the first controller and the second controller.
Referring to fig. 2 and 6, preferably, the second wireless identification circuit 212 includes a third pull-up resistor R3, a first terminal of the third pull-up resistor R3 is an input terminal of the second wireless identification circuit 212 connected to the power supply VCC, and a second terminal is an output terminal of the second wireless identification circuit 212. When the first wireless communication unit 12 is connected to the first control circuit 11, the second signal ground of the second wireless communication unit 22 is connected to the output end of the second wireless identification circuit 112, so that the high level signal received by the second wireless identification terminal IO4 is pulled down to a low level signal (i.e., a second wireless communication unit access signal), thereby identifying the access of the second wireless communication unit 22.
The second communication relay chip 214 is any one of the following: RS485 communication switching chip, RS422 communication switching chip, CAN bus communication switching chip and Ethernet communication switching chip. It is understood that, to ensure effective communication, the first communication forwarding chip 114 and the second communication forwarding chip 214 need to use the same communication forwarding chip.
The second wireless communication unit 22 is any one of the following: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit. The second wireless communication unit 22 may be mounted on a patch board, a second signal ground terminal of the patch board is used for connecting with the output terminal of the second wireless identification circuit 212 when accessing the second control circuit 21, and a data transceiving terminal of the patch board is used for connecting the data transceiving terminal of the second wireless communication unit 21 with the fourth serial UART4 when accessing the second control circuit 21. And some second wireless communication units are provided with adapter plates. Preferably, the second wireless communication unit 22 of the present embodiment is a ZigBee wireless communication unit. The ZigBee wireless communication unit has high safety, short time delay and low power consumption, and can meet the communication requirement of a high-pressure injection system. It will be appreciated that the first wireless communication unit 12 and the second wireless communication unit 22 need to use the same type of wireless communication unit.
Referring to fig. 3, fig. 3 is a second embodiment of a communication system of a high pressure injection system according to the present invention. The difference between this embodiment and the first embodiment is that the peripheral circuit of the first controller may further include an analog switch, and the first controller may control the wired communication request signal or the wireless communication request signal received and output by the analog switch to the first communication switching chip 114 or the first wireless communication unit 12 through the control signal and a serial port.
As shown in fig. 3, specifically, the first control circuit 11 includes a first controller 111, an analog switch 117, a first wireless identification circuit 112, a wired identification circuit 113, and a first communication relay chip 114. The first wireless identification terminal IO2 of the first controller 111 is connected to the output terminal of the first wireless identification circuit 112, the wired identification terminal IO1 is connected to the output terminal of the wired identification circuit 113, the control terminal IO3 is connected to the controlled terminal of the analog switch 117, and the first serial port UART1 is connected to the first terminal of the analog switch 117. A second terminal of the analog switch 117 is connected to a first terminal of the first communication relay chip 114. When the first wireless communication unit 12 is connected to the first control circuit 11, the data transceiving terminal of the first wireless communication unit 12 is connected to the third terminal of the analog switch 117, and the first signal ground terminal of the first wireless communication unit 12 is connected to the output terminal of the first wireless identification circuit 112. When the cable 3 is connected to the first control circuit 11, the data line of the cable 3 is connected to the second end of the first communication adapter chip 114, and the identification line of the cable 3 is connected to the output end of the wired identification circuit 113.
When the first wireless identification terminal IO2 receives the first wireless communication unit access signal through the first wireless identification circuit 112 and the wired identification terminal IO1 receives the cable access signal through the wired identification circuit 113, or only receives the cable access signal, the first controller 111 outputs a wired communication request signal to the analog switch 117 through the first serial port UART1 and outputs a first control signal through the control terminal IO 3; when the first wireless identification terminal IO2 receives the first wireless communication unit access signal and the wired identification terminal IO2 does not receive the cable access signal, the first controller 111 outputs a wireless communication request signal to the analog switch 117 through the first serial UART1 and outputs a second control signal through the control terminal IO 3. It is understood that the first control signal and the second control signal can be a high level signal or a low level signal, and when one of the two signals is a high level signal, the other is a low level signal.
The analog switch 117 disconnects the electrical connection with the first wireless communication unit 12 and switches to the electrical connection with the first communication relay chip 114 and outputs the wired communication request signal to the first communication relay chip 114 through the second terminal when the controlled terminal receives the first control signal; the analog switch 117 disconnects the electrical connection with the first communication relay chip 114 upon receiving the second control signal and switches to the electrical connection with the first wireless communication unit 12 and outputs the wireless communication request signal to the first wireless communication unit 12 through the second terminal. This embodiment can reduce the number of serial ports used by the first controller 111, and realize the output of the wired communication request signal and the wireless communication request signal through only one serial port.
The rest of the second embodiment is the same as the first embodiment, and therefore, the description thereof is omitted.
Referring to fig. 7, fig. 7 is a flowchart of a communication switching method according to the present invention, which can be applied to the communication system of the high pressure injection system in the above embodiments.
As shown in fig. 7, the communication switching method specifically includes:
s1: a first control circuit of a first console enters a wired and wireless communication access detection mode; wired and wireless communication access detection modes include: the first control circuit detects and receives the first wireless communication unit access signal output by the first wireless communication unit in real time through the first wireless identification circuit, and detects and receives the cable access signal output by the second control circuit of the second console through the cable in real time through the wired identification circuit.
In step S1, the first wireless communication unit access signal and the cable access signal are both low level signals, and by setting the first wireless identification circuit and the wired identification circuit to initially output signals as high level signals, when the high level signals are pulled down to low level signals by the first signal ground of the first wireless communication unit and/or the signal ground of the second console, the first controller can detect the access of the first wireless communication unit and/or the cable.
S2: the first controller determines the signal received in step S1, and if the signal is a cable access signal and a first wireless communication unit access signal or only a cable access signal, the process proceeds to step S3, and if the signal is a first wireless communication unit access signal, the process proceeds to step S5.
In step S2, the first controller receives the cable access signal and the first wireless communication unit access signal through different pins, so as to effectively identify the cable access or the first wireless communication unit access.
S3: the first controller enters a wired communication test mode; the wired communication test mode includes: the first controller sends a wired communication request signal to the second controller through the cable and receives a wired communication confirmation signal returned by the second controller, and if the first controller receives the wired communication confirmation signal, the step S4 is executed, otherwise, the step S5 is executed.
S4: the first controller selects a wired communication mode and receives a high-pressure injection task control command sent by the second controller through a cable.
In step S4, the high pressure injection task command is a control command for controlling the high pressure injector to perform an injection task, for example, a command for controlling an injection speed, an injection dose, and the like. In addition, the high pressure injection task command may also be transmitted to the first controller in step S3 simultaneously with the wired communication confirmation signal.
S5: the first controller enters a wireless communication test mode; the wireless communication test mode includes: the first controller transmits a wireless communication request signal to the second wireless communication unit of the second controller through the first wireless communication unit and receives a wireless communication confirmation signal returned by the second controller through the second wireless communication unit, and the step S6 is proceeded if the first controller receives the wireless communication confirmation signal, otherwise, the step S7 is proceeded.
S6: the first controller selects a wireless communication mode and receives a high-pressure injection task control instruction sent by the second controller through the second wireless communication unit through the first wireless communication unit.
In step S6, the high pressure injection task control command is a control command for controlling the high pressure injector to perform an injection task, for example, a command for controlling an injection speed, an injection dose, and the like. In addition, the high pressure injection task command may also be transmitted to the first controller at the same time as the wireless communication confirmation signal in step S5.
S7: and the first controller judges whether the selected communication connection is overtime or not, outputs system communication fault alarm information if the selected communication connection is overtime, and repeatedly executes the steps S1-S7 if the selected communication connection is not overtime.
Through steps S1-S7, the first controller can automatically realize wired and wireless communication tests according to the received cable access signal and the first wireless communication unit access signal, and select a corresponding wired or wireless communication connection mode when receiving the returned wired communication confirmation signal or wireless communication confirmation signal, so that the communication system of the high-pressure injection system is compatible with two communication modes of wired communication and wireless communication, wired and wireless selection of the communication system is realized, the flexibility of the use of the high-pressure injection system is facilitated, through the selection of wired communication and wireless communication, when the cable access signal is detected, the wired communication connection can be switched, when the cable access signal is not detected or the wired communication function is not normal (the wired communication confirmation signal is not received), the wireless communication detection mode is entered and the wireless communication connection is switched, if one round of communication selection is not successful, multiple rounds of communication selection can be carried out before the communication connection is overtime, and the effectiveness and the reliability of communication switching are ensured.
Before step S1, the method further includes:
s1-1: the first controller enters a self-checking mode to detect whether the high-pressure injector meets parameter information required by normal operation, if the self-checking is successful, the step S1-2 is carried out, and if not, the step S1-3 is carried out;
s1-2: the first controller enters a user setting working mode, and after receiving a setting completion instruction, the first controller proceeds to step S1; the user sets a working mode for setting control parameters related to the injection task;
s1-3: the first controller outputs self-checking fault alarm information.
In the self-checking mode, the power supply voltage of the high-voltage injector, the rotating speed of the motor and the like can be detected, if the power supply voltage is abnormal, self-checking fault alarm information is displayed through a display screen (which can be a touch screen) of the first control console so as to remind a user of maintenance and processing, and the high-voltage injector cannot enter a wired and wireless communication access detection mode before faults are not eliminated. In the working mode setting mode of the user, control parameters such as the injection speed and the dosage of the high-pressure injector can be set.
The communication switching method provided by the embodiment can effectively complete the wireless and wired communication selection of the communication system of the high-pressure injection system, realizes the switching of communication modes, is simple and reliable in switching, realizes the distance control of the high-pressure injection system, can effectively monitor the communication condition, ensures the communication reliability, improves the use flexibility, meets the communication requirement of the communication system of the high-pressure injection system, and improves the user experience.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A communication system of a high-pressure injection system comprises a first console used for controlling a high-pressure injector in an examination room and a second console used for controlling the first console in a control room, and is characterized in that a first control circuit (11) of the first console (1) is connected with a first wireless communication unit (12) and a cable (3) in a pluggable mode respectively; a second control circuit (21) of the second console (2) is connected with a second wireless communication unit (22) and the cable (3) in a pluggable manner;
the first wireless communication unit (22) outputs a first wireless communication unit access signal when connected to the first control circuit (11); the second control circuit (21) when connected to the cable (3) outputs a cable access signal when connected to the first control circuit (11);
the first control circuit (11) outputs a wired communication request signal through the cable (3) when receiving the first wireless communication unit access signal and the cable access signal, or when receiving only the cable access signal; the first control circuit (11) outputs a wireless communication request signal through the first wireless communication unit (12) when receiving the first wireless communication unit access signal and not receiving the cable access signal;
the second control circuit (21) returns a wired communication confirmation signal to the first control circuit (11) through the cable (3) when receiving the wired communication request signal so that the first control circuit (11) is connected with the second control circuit (21) in wired communication after receiving the wired communication confirmation signal; the second control circuit (21) returns a wireless communication confirmation signal to the first control circuit (11) through the second wireless communication unit (22) upon receiving the wireless communication request signal to make the first control circuit (11) wirelessly communicate with the second control circuit (12) after receiving the wireless communication confirmation signal.
2. The communication system of a high pressure injection system according to claim 1, wherein the first control circuit (11) comprises a first controller (111), a first wireless identification circuit (112), a wired identification circuit (113) and a first communication relay chip (114); a first wireless identification end of the first controller (111) is connected with an output end of the first wireless identification circuit (112), a wired identification end is connected with an output end of the wired identification circuit (113), and a first serial port is connected with a first end of the first communication switching chip (114);
when the first wireless communication unit (12) is connected to the first control circuit (11), the data transceiving end of the first wireless communication unit (12) is connected to the second serial port of the first controller (111), and the first signal ground end of the first wireless communication unit (12) is connected to the output end of the first wireless identification circuit (112);
when the cable (3) is connected with the first control circuit (11), the output end of the wired identification circuit (113) is connected with the identification line of the cable (3), and the second end of the first communication switching chip (114) is connected with the data line of the cable (3);
the first controller (111) outputs the wired communication request signal through the first serial port when the first wireless identification terminal receives the first wireless communication unit access signal through the first wireless identification circuit (112) and when the wired identification terminal receives the cable access signal through the wired identification circuit (113), or only receives the cable access signal; the first controller (111) outputs the wireless communication request signal through the second serial port when the first wireless identification terminal receives the first wireless communication unit access signal and when the wired identification terminal does not receive the cable access signal.
3. The communication system of a high pressure injection system according to claim 1, wherein the first control circuit (11) comprises a first controller (111), an analog switch (117), a first wireless identification circuit (112), a wired identification circuit (113) and a first communication relay chip (114); the first wireless identification end of the first controller (111) is connected with the output end of the first wireless identification circuit (112), the wired identification end is connected with the output end of the wired identification circuit (113), the control end is connected with the controlled end of the analog switch (117), and the first serial port is connected with the first end of the analog switch (117); the second end of the analog switch (117) is connected with the first end of the first communication switching chip (114);
when the first wireless communication unit (12) is connected with the first control circuit (11), the data transceiving end of the first wireless communication unit (12) is connected with the third end of the analog switch (117), and the first signal ground end of the first wireless communication unit (12) is connected with the output end of the first wireless identification circuit (112);
when the cable (3) is connected with the first control circuit (11), a data line of the cable (3) is connected with the second end of the first communication switching chip (114), and an identification line of the cable (3) is connected with the output end of the wired identification circuit (113);
the first controller (111) outputs the wired communication request signal through the first serial port and outputs a first control signal through the control terminal when the first wireless identification terminal receives the first wireless communication unit access signal through the first wireless identification circuit (112) and when the wired identification terminal receives the cable access signal through the wired identification circuit (113), or only receives the cable access signal; the first controller (111) outputs the wireless communication request signal through the first serial port and outputs a second control signal through the control terminal when the first wireless identification terminal receives the first wireless communication unit access signal and when the wired identification terminal does not receive the cable access signal;
the analog switch (117) disconnects the electrical connection with the first wireless communication unit (12) and switches to be electrically connected with the first communication switching chip (114) when the controlled terminal receives the first control signal and outputs the wired communication request signal through a second terminal; the analog switch (117) disconnects the electrical connection with the first communication switching chip (114) and switches to the electrical connection with the first wireless communication unit (12) and outputs the wireless communication request signal through a second end when receiving the second control signal.
4. Communication system of a high pressure injection system according to claim 2 or 3,
the first wireless identification circuit (112) comprises a first pull-up resistor R1, a first end of the first pull-up resistor R1 is an input end of the first wireless identification circuit (112) connected with a power supply VCC, and a second end of the first pull-up resistor R1 is an output end of the first wireless identification circuit (112);
the wired identification circuit (113) comprises a second pull-up resistor R2, the first end of the second pull-up resistor R2 is the input end of the wired identification circuit (113) for connecting the power supply VCC, and the second end is the output end of the wired identification circuit (113).
5. The communication system of the high pressure injection system according to claim 2 or 3, wherein the first communication relay chip (114) is any one of the following: the system comprises an RS485 communication switching chip, an RS422 communication switching chip, a CAN bus communication switching chip and an Ethernet communication switching chip;
the first wireless communication unit (12) is any one of: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit.
6. The communication system of a high pressure injection system according to claim 1, wherein the second control circuit (21) comprises a second controller (211), a signal ground (213), a second wireless identification circuit (212) and a second communication relay chip (214); a third serial port of the second controller (211) is connected with a first end of the second communication switching chip (214), and a second wireless identification end is connected with an output end of the second wireless identification circuit (212);
when the second wireless communication unit (22) is connected to the second control circuit (21), the data transceiving end of the second wireless communication unit (22) is connected to the fourth serial port of the second controller (211), and the second signal ground end of the second wireless communication unit (22) is connected to the output end of the second wireless identification circuit (212);
when the cable (3) is connected with the second controller (211), the identification line of the cable (3) is connected with a signal ground (213), and the data line of the cable (3) is connected with the second end of the second communication switching chip (214);
the second controller (211) returns a wired communication confirmation signal or a wireless communication confirmation signal to the first control circuit (11) through the cable (3) or the second wireless communication unit (22) according to the wired communication request signal received by the third serial port or according to the wireless communication request signal received by the fourth serial port;
the first control circuit (11) is connected with the second controller (211) in wired communication or in wireless communication according to the received wired communication confirmation signal or wireless communication confirmation signal.
7. The communication system of a high pressure injection system according to claim 6, wherein the second wireless identification circuit (212) comprises a third pull-up resistor R3, a first terminal of the third pull-up resistor R3 being an input terminal of the second wireless identification circuit (212) connected to a supply VCC, a second terminal being an output terminal of the second wireless identification circuit (212).
8. The communication system of the high pressure injection system according to claim 6, wherein the second communication relay chip (214) is any one of the following: the system comprises an RS485 communication switching chip, an RS422 communication switching chip, a CAN bus communication switching chip and an Ethernet communication switching chip;
the second wireless communication unit (22) is any one of: the wireless communication system comprises a ZigBee wireless communication unit, a BLE wireless communication unit, a WiFi wireless communication unit, an NB-IOT wireless communication unit and an LoRa wireless communication unit.
9. A communication switching method applied to a communication system of a high pressure injection system according to any one of claims 1 to 8, the method comprising:
s1: a first control circuit of a first console enters a wired and wireless communication access detection mode; the wired and wireless communication access detection modes include: the first control circuit detects and receives a first wireless communication unit access signal output by the first wireless communication unit in real time through the first wireless identification circuit, and detects and receives a cable access signal output by a second control circuit of the second console through a cable in real time through the wired identification circuit;
s2: the first controller determines the signal received in step S1, and if the signal is the cable access signal and the first wireless communication unit access signal or the cable access signal alone, the process goes to step S3, and if the signal is the first wireless communication unit access signal, the process goes to step S5;
s3: the first controller enters a wired communication test mode; the wired communication test mode includes: the first controller sends a wired communication request signal to the second controller through the cable and receives a wired communication confirmation signal returned by the second controller, if the first controller receives the wired communication confirmation signal, the step S4 is carried out, otherwise, the step S5 is carried out;
s4: the first controller selects a wired communication mode and receives a high-pressure injection task control instruction sent by the second controller through the cable;
s5: the first controller enters a wireless communication test mode; the wireless communication test mode comprises: the first controller sends a wireless communication request signal to a second wireless communication unit of the second controller through a first wireless communication unit, and receives a wireless communication confirmation signal returned by the second controller through the second wireless communication unit, if the first controller receives the wireless communication confirmation signal, the step S6 is performed, otherwise, the step S7 is performed;
s6: the first controller selects a wireless communication mode and receives the high-pressure injection task control instruction sent by the second controller through the second wireless communication unit through the first wireless communication unit;
s7: and the first controller judges whether the selected communication connection is overtime or not, outputs system communication fault alarm information if the selected communication connection is overtime, and repeatedly executes the steps S1-S7 if the selected communication connection is not overtime.
10. The communication handover method according to claim 9, wherein before the step S1, the method further comprises:
s1-1: the first controller enters a self-checking mode to detect whether the high-pressure injector meets parameter information required by normal operation, if the self-checking is successful, the step S1-2 is carried out, and if not, the step S1-3 is carried out;
s1-2: the first controller enters a user setting working mode, and after receiving a setting completion instruction, the first controller enters a step S1; the user setting working mode is used for setting parameters related to an injection task;
s1-3: and the first controller outputs self-checking fault alarm information.
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| CN202011066015.XA CN112118026A (en) | 2020-09-30 | 2020-09-30 | Communication system and communication switching method of high-pressure injection system |
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| CN202011066015.XA CN112118026A (en) | 2020-09-30 | 2020-09-30 | Communication system and communication switching method of high-pressure injection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113768525A (en) * | 2021-10-11 | 2021-12-10 | 深圳圣诺医疗设备股份有限公司 | Motion part control system and method of mammary X-ray machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113768525A (en) * | 2021-10-11 | 2021-12-10 | 深圳圣诺医疗设备股份有限公司 | Motion part control system and method of mammary X-ray machine |
| CN113768525B (en) * | 2021-10-11 | 2024-05-14 | 深圳圣诺医疗设备股份有限公司 | Motion component control system and method for mammary gland X-ray machine |
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