Control signal networked transmission system

Abstract

The utility model discloses a control signal networked transmission system, which relates to the field of medical control systems and comprises at least one control circuit, two microprocessors and at least one receiving circuit, the control circuit is electrically connected with one microprocessor, the receiving circuit is electrically connected with the other microprocessor, and the two microprocessors are electrically connected with the control circuit. The two microprocessors are connected through network transmission, the control circuit transmits a control signal received by one signal node to the receiving circuit through the two microprocessors, and the receiving circuit outputs the control signal to control the other signal node; according to the utility model, control signals of the signal nodes are transmitted in a networked manner, heavy cables are removed, space occupation is reduced, winding risks are avoided, stability of control signal transmission is ensured, installation cost is reduced, upgrading and reconstruction are convenient, rewiring is not needed when control nodes are increased, lightweight design of equipment is facilitated, wiring errors of the control signals are avoided, and reliability of the equipment is improved. And convenience and economic benefit guarantee are provided for transmission of control signals.

Description

Technical Field

[0001] This utility model relates to the field of medical control system technology, and in particular to a networked transmission system for control signals. Background Technology

[0002] A medical linear accelerator is a medical device that uses microwave electromagnetic fields to accelerate electrons and create a linear trajectory for radiotherapy of tumors or other lesions. It produces high-energy X-rays and electron beams, characterized by high dose rate, short irradiation time, large irradiation field, good dose uniformity and stability, and a small penumbra. Medical linear accelerator systems have many remote control nodes (such as console keyboards, gantry-mounted signal controls, and treatment room monitoring), which are connected using hardwired connections.

[0003] Chinese patent application number CN201520170162.X discloses a medical linear accelerator beam splitting application system, which consists of an accelerator equipment room, a medical linear accelerator, multiple rotating gantry units that use deflecting magnets and focusing elements to guide and control the beam movement, transport lines, deflecting magnets, treatment rooms, treatment beds, and a control system. The medical linear accelerator and the rotating gantry units controlling the beam movement are respectively installed in the equipment room and the treatment room. The medical linear accelerator outputs a concentrated beam, which is flexibly delivered to each treatment room according to a schedule and timeline through the control system. Doctors can perform radiotherapy by turning on the beam control switch according to the type of beam required by the patient.

[0004] In existing medical linear accelerator systems, the console keyboard cable needs to run across the walls of the treatment room and control room, resulting in complex wiring and poor scalability. Signal control on the rack requires multiple cables to follow the rack's rotation; these cables are prone to damage from prolonged bending and friction, increasing the risk of cable tangling. Furthermore, traditional straight-through cables cause voltage drops due to internal resistance during long-distance analog signal transmission, leading to insufficient driving force and instability at the end point. The numerous signal nodes also increase the wiring error rate. Therefore, this invention discloses a networked control signal transmission system to solve these problems. Utility Model Content

[0005] Therefore, it is necessary to provide a networked transmission system for control signals to address the aforementioned technical problems. This system transmits control signals from signal nodes in a networked manner through a control circuit, a receiving circuit, and two microprocessors. It eliminates cumbersome cables, reduces space occupation, avoids the risk of wire tangling, ensures the stability of control signal transmission, lowers installation costs, facilitates upgrades and modifications, eliminates the need for rewiring when adding control nodes, promotes lightweight equipment design, and avoids control signal wiring errors. This provides a convenient and cost-effective guarantee for the transmission of control signals.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A networked control signal transmission system includes at least one control circuit, two microprocessors, and at least one receiving circuit. The control circuit is electrically connected to one of the microprocessors, and the receiving circuit is electrically connected to the other microprocessor. The two microprocessors are connected via a network. The control circuit transmits control signals received by one signal node to the microprocessor connected to the control circuit. The microprocessor connected to the control circuit transmits control signals to the other microprocessor via a pre-programmed instruction network. After receiving the instructions, the other microprocessor outputs them to the receiving circuit, and the receiving circuit outputs control signals to control the other signal node.

[0008] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, each of the two microprocessors includes a microcontroller and an Ethernet controller. The pins of the microcontroller are electrically connected to the pins of the Ethernet controller, and the Ethernet controllers on the two microprocessors are connected by a network cable.

[0009] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, the control circuit and the receiving circuit are used together. After receiving the control signal of a signal node, the control circuit transmits the signal through two microprocessors and outputs it to the receiving circuit to control another signal node.

[0010] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, there are two control circuits, namely a first control circuit and a second control circuit, and there are also two receiving circuits, namely a first receiving circuit and a second receiving circuit.

[0011] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, the two microprocessors are a first microprocessor and a second microprocessor, the first control circuit is electrically connected to the first microprocessor, the first receiving circuit is electrically connected to the second microprocessor, the second control circuit is electrically connected to the second microprocessor, and the second receiving circuit is electrically connected to the first microprocessor.

[0012] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, there is at least one first control circuit, one first receiving circuit, one second control circuit, and one second receiving circuit.

[0013] As a preferred embodiment of the networked transmission system for control signals provided by this utility model, the first control circuit includes a switch S1, a resistor R2, an optocoupler U1, and a resistor R4. The switch S1 and the resistor R2 are connected in series and then electrically connected to the first pin of the optocoupler U1. The third pin of the optocoupler U1 is connected to the resistor R4 and then grounded. The third pin of the optocoupler U1 is also electrically connected to the first microprocessor.

[0014] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, the first receiving circuit includes a resistor R1, an optocoupler U5, a resistor R3, a transistor Q1, a freewheeling diode D2, and a relay K2. The first pin of the optocoupler U5 is electrically connected to the second microprocessor after being connected in series with the resistor R1. The emitter of the transistor Q1 is connected in series with the resistors R3 and R5 and then connected to the third pin of the optocoupler U5. The base of the transistor Q1 is connected between the resistors R3 and R5. The collector of the transistor Q1 is connected to one end of the freewheeling diode D2. The freewheeling diode D2 is connected in parallel with the coil of the relay K2. One end of the contact of the relay K2 is connected to the fourth pin of the optocoupler U5.

[0015] As a preferred embodiment of the networked transmission system for control signals provided by this utility model, the second control circuit includes a switch S2, a resistor R7, an optocoupler U8, and a resistor R9. The switch S2 and the resistor R7 are connected in series and then connected to the first pin of the optocoupler U8. The third pin of the optocoupler U8 is connected to the resistor R9 and then grounded. The third pin of the optocoupler U8 is connected to the second microprocessor.

[0016] In a preferred embodiment of the networked transmission system for control signals provided by this utility model, the second receiving circuit includes a resistor R6, an optocoupler U4, a resistor R8, a resistor R10, a transistor Q2, a relay K1, and a freewheeling diode D1. The first pin of the optocoupler U4 is electrically connected to the first microprocessor after being connected in series with the resistor R6. The emitter of the transistor Q2 is connected in series with the resistors R8 and R10 and then connected to the third pin of the optocoupler U4. The base of the transistor Q2 is connected between the resistors R8 and R10. The collector of the transistor Q2 is connected to one end of the freewheeling diode D1. The freewheeling diode D1 is connected in parallel with the coil of the relay K1. One end of the contact of the relay K1 is connected to the fourth pin of the optocoupler U4.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The networked control signal transmission system provided by this utility model transmits control signals from signal nodes in a networked manner through a control circuit, a receiving circuit, and two microprocessors. It eliminates cumbersome cables, reduces space occupation, avoids the risk of wire tangling, ensures the stability of control signal transmission, reduces installation costs, facilitates upgrades and modifications, and allows the addition of control nodes without rewiring. It also facilitates lightweight equipment design, avoids control signal wiring errors, and provides convenient and economical guarantees for control signal transmission. Attached Figure Description

[0019] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall system connection of the networked transmission system for control signals provided by this utility model;

[0021] Figure 2 A schematic diagram of the overall circuit connection of the networked transmission system for control signals provided by this utility model;

[0022] Figure 3 A schematic diagram of the connection of the first control circuit in the networked transmission system of control signals provided by this utility model;

[0023] Figure 4 A schematic diagram of the connection of the first receiving circuit in the networked transmission system of control signals provided by this utility model;

[0024] Figure 5 A schematic diagram of the connection of the second control circuit in the networked transmission system of control signals provided by this utility model;

[0025] Figure 6 A schematic diagram of the connection of the second receiving circuit in the networked transmission system of control signals provided by this utility model;

[0026] Figure 7 A schematic diagram of the circuit connection between two microprocessors in the networked transmission system of control signals provided by this utility model.

[0027] The markings in the diagram are explained as follows:

[0028] 1. First control circuit; 2. Second control circuit; 3. First receiving circuit; 4. Second receiving circuit; 5. First microprocessor; 6. Second microprocessor; 7. Network cable. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] As described in the background section, in existing medical linear accelerator systems, the console keyboard cable needs to run across the walls of the treatment room and control room, resulting in complex wiring and poor scalability. Signal control on the rack requires multiple cables to follow the rack's rotation. Long-term bending and friction of the cables can easily cause damage and increase the risk of cable entanglement. Moreover, traditional hard-wired direct connection of cables leads to voltage drop due to internal resistance in long-distance analog signal transmission, resulting in insufficient driving force and instability at the end of the signal transmission. The large number of signal nodes increases the wiring error rate.

[0031] To address this technical problem, this invention provides a networked transmission system for control signals, which is applied in the field of medical control systems.

[0032] For details, please refer to Figure 1-2 The networked transmission system for control signals specifically includes at least one control circuit, two microprocessors, and at least one receiving circuit. The control circuit is electrically connected to one of the microprocessors, and the receiving circuit is electrically connected to the other microprocessor. The two microprocessors are connected via a network. The control circuit transmits the control signal received by one signal node to the microprocessor connected to the control circuit. The microprocessor connected to the control circuit transmits the control signal to the other microprocessor through a pre-programmed instruction network. After receiving the instruction, the other microprocessor outputs it to the receiving circuit, and the receiving circuit outputs a control signal to control the other signal node.

[0033] The networked control signal transmission system provided by this utility model transmits control signals from signal nodes in a networked manner through a control circuit, a receiving circuit, and two microprocessors. It eliminates cumbersome cables, reduces space occupation, avoids the risk of wire tangling, ensures the stability of control signal transmission, reduces installation costs, facilitates upgrades and modifications, and allows the addition of control nodes without rewiring. It also facilitates lightweight equipment design, avoids control signal wiring errors, and provides convenient and economical guarantees for control signal transmission.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] Example 1

[0038] Please refer to Figure 1-2 A networked control signal transmission system is provided, comprising two control circuits, two microprocessors, and two receiving circuits. The control circuits transmit control signals received by one signal node to a microprocessor connected to the control circuit. The microprocessor connected to the control circuit transmits the control signals to another microprocessor via a pre-programmed instruction network. The other microprocessor receives the instructions and outputs them to the receiving circuit. The receiving circuit outputs control signals to control another signal node. The control circuits and receiving circuits work together. After receiving a control signal from one signal node, the control circuit transmits it through the two microprocessors and outputs it to the receiving circuit to control another signal node, thus enabling bidirectional transmission of control signals.

[0039] In this embodiment, the two control circuits are the first control circuit 1 and the second control circuit 2, the two receiving circuits are the first receiving circuit 3 and the second receiving circuit 4, and the two microprocessors are the first microprocessor 5 and the second microprocessor 6. The first control circuit 1 is electrically connected to the first microprocessor 5, the first receiving circuit 3 is electrically connected to the second microprocessor 6, the second control circuit 2 is electrically connected to the second microprocessor 6, and the second receiving circuit 4 is electrically connected to the first microprocessor 5. The two microprocessors are connected via a network.

[0040] Specifically, when transmitting the power on signal from the console keyboard to the control cabinet: the first control circuit receives the power on signal and transmits it to the first microprocessor 5, and then transmits it to the second microprocessor 6 through the pre-programmed instruction network. After receiving the instruction, the second microprocessor 6 outputs control to the receiving circuit. When transmitting the control cabinet power indicator light signal (LED1) to the console keyboard: the second control circuit receives the LED1 signal and transmits it to the second microprocessor 6, and then transmits it to the first microprocessor 5 through the pre-programmed instruction network. After receiving the instruction, the first microprocessor 5 outputs control to the second receiving circuit 4.

[0041] Both microprocessors include a microcontroller and an Ethernet controller. Specifically, the first microprocessor 5 includes a microcontroller U2 and an Ethernet controller U3, and the second microprocessor 6 includes a microcontroller U7 and an Ethernet controller U6. The pins (11, 12, 13) of the microcontroller and the pins (1, 2, 3) of the Ethernet controller are electrically connected in a one-to-one correspondence. The Ethernet controllers on the two microprocessors are connected to each other via a network cable 7, which is a CAT6 network cable. A single CAT6 network cable can be reused to transmit control, monitoring, and image data, replacing dozens of hard wires, thereby reducing costs, eliminating heavy cables, reducing space occupation, and facilitating lightweight equipment design.

[0042] The first control circuit 1 and the first receiving circuit 3, the second control circuit 2 and the second receiving circuit 4 can be set up as multiple sets. In this way, when increasing the number of control nodes, only the first control circuit 1 and the first receiving circuit 3 or the second control circuit 2 and the second receiving circuit 4 need to be added, which is convenient for upgrading and transformation and greatly reduces the installation cost.

[0043] In this embodiment, both the first and second microcontrollers need to be programmed to read the control pin signals and convert them into specific instructions. They communicate with the remote microcontroller through the Ethernet controller. The first and second microcontrollers are isolated from the control signals by optocouplers to improve anti-interference capabilities.

[0044] Example 2

[0045] The networked transmission system for control signals provided in Embodiment 1 is further optimized, specifically, as follows: Figure 2-4 , Figure 7 As shown, the first control circuit 1 includes a switch S1, a resistor R2, an optocoupler U1 and a resistor R4. The switch S1 and the resistor R2 are connected in series and then electrically connected to the first pin of the optocoupler U1. The third pin of the optocoupler U1 is connected to the resistor R4 and then grounded. The third pin of the optocoupler U1 is electrically connected to the fourth pin of the microcontroller U2, and the second pin of the optocoupler U1 is grounded. The first receiving circuit 3 includes a resistor R1, an optocoupler U5, a resistor R3, a transistor Q1, a freewheeling diode D2, and a relay K2. The first pin of the optocoupler U5 is connected in series with the resistor R1 and then electrically connected to the fourth pin of the microcontroller U6. The emitter of the transistor Q1 is connected in series with the resistors R3 and R5 and then connected to the third pin of the optocoupler U5. The base of the transistor Q1 is connected between the resistors R3 and R5. The collector of the transistor Q1 is connected to one end of the freewheeling diode D2. The freewheeling diode D2 is connected in parallel with the coil of the relay K2. One end of the contact of the relay K2 is connected to the fourth pin of the optocoupler U5.

[0046] In this example, signal1 and signal1# represent the signals before and after transmission. Signal1 signal transmission: When switch S1 is pressed, optocoupler U1 is turned on. After pin 4 of microcontroller U2 detects a high level, it is transmitted to Ethernet controller U7 and microcontroller U6 via the network in conjunction with Ethernet controller U3. After receiving the instruction, microcontroller U6 outputs a high level on pin 4, optocoupler U5 is turned on, transistor Q1 is turned on, relay K2 is activated, and signal1# can then obtain the switching signal of switch S1.

[0047] Example 3

[0048] The networked transmission system for control signals provided in Embodiment 2 is further optimized, specifically, as follows: Figure 2 , Figure 5-7 As shown, the second control circuit 2 includes a switch S2, a resistor R7, an optocoupler U8, and a resistor R9. Switch S2 and resistor R7 are connected in series and then connected to pin 1 of optocoupler U8. Pin 3 of optocoupler U8 is connected to resistor R9 and then grounded. Pin 3 of optocoupler U8 is connected to pin 10 of microcontroller U6. The second receiving circuit 4 includes a resistor R6, an optocoupler U4, a resistor R8, a resistor R10, a transistor Q2, a relay K1, and a freewheeling diode D1. Pin 1 of optocoupler U4 is connected in series with resistor R6 and then electrically connected to pin 6 of microcontroller U2. The emitter of transistor Q2 is connected in series with resistors R8 and R10 and then connected to pin 3 of optocoupler U4. The base of transistor Q2 is connected between resistors R8 and R10. The collector of transistor Q2 is connected to one end of freewheeling diode D1. Freewheeling diode D1 is connected in parallel with the coil of relay K1. One end of the contact of relay K1 is connected to pin 4 of optocoupler U4.

[0049] singal2 and singal2# represent the signals before and after transmission. Singal2 signal transmission: When switch S2 is pressed, optocoupler U8 is turned on. After pin 10 of microcontroller U6 detects a high level, it transmits a specific instruction to Ethernet controller U3 and microcontroller U2 via the network in conjunction with Ethernet controller U7. After receiving the instruction, pin 6 of microcontroller U2 outputs a high level, optocoupler U4 is turned on, transistor Q2 is turned on, relay K1 is activated, and Singal2# can then obtain the S2 switch signal.

[0050] The working principle of the networked control signal transmission system provided by this utility model is as follows: the control signals of the signal nodes are transmitted in a network through a control circuit, a receiving circuit, and two microprocessors. A single CAT6 network cable 7 can be reused to transmit control, monitoring, and video data, replacing dozens of hard wires. This eliminates the need for heavy cables, reduces space occupation, and avoids the risk of wire tangling. At the same time, the control signals can be transmitted bidirectionally, ensuring the stability of the control signal transmission, reducing installation costs, facilitating upgrades and modifications, and eliminating the need for rewiring when adding control nodes. This also facilitates lightweight equipment design, avoids control signal wiring errors, and provides convenient and economical guarantees for the transmission of control signals.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A networked transmission system for control signals, characterized in that, It includes at least one control circuit, two microprocessors, and at least one receiving circuit. The control circuit is electrically connected to one of the microprocessors, and the receiving circuit is electrically connected to the other microprocessor. The two microprocessors are connected via a network. The control circuit transmits control signals received by one signal node to the microprocessor connected to the control circuit. The microprocessor connected to the control circuit transmits control signals to the other microprocessor through a pre-programmed instruction network. After receiving the instructions, the other microprocessor outputs them to the receiving circuit. The receiving circuit outputs control signals to control the other signal node.

2. The networked transmission system for control signals according to claim 1, characterized in that, Both microprocessors include a microcontroller and an Ethernet controller, with the pins of the microcontroller electrically connected to the pins of the Ethernet controller, and the Ethernet controllers on the two microprocessors connected via a network cable.

3. The networked transmission system for control signals according to claim 1, characterized in that, The control circuit is used in conjunction with the receiving circuit. After receiving the control signal of one signal node, the control circuit transmits the signal through two microprocessors and outputs it to the receiving circuit to control another signal node.

4. The networked transmission system for control signals according to claim 1, characterized in that, There are two control circuits, namely a first control circuit and a second control circuit, and there are also two receiving circuits, namely a first receiving circuit and a second receiving circuit.

5. A networked transmission system for control signals according to claim 4, characterized in that, The two microprocessors are a first microprocessor and a second microprocessor. The first control circuit is electrically connected to the first microprocessor, the first receiving circuit is electrically connected to the second microprocessor, the second control circuit is electrically connected to the second microprocessor, and the second receiving circuit is electrically connected to the first microprocessor.

6. The networked transmission system for control signals according to claim 5, characterized in that, There is at least one of each of the first control circuit, the first receiving circuit, the second control circuit, and the second receiving circuit.

7. A networked transmission system for control signals according to claim 5, characterized in that, The first control circuit includes a switch S1, a resistor R2, an optocoupler U1, and a resistor R4. The switch S1 and the resistor R2 are connected in series and then electrically connected to the first pin of the optocoupler U1. The third pin of the optocoupler U1 is connected to the resistor R4 and then grounded. The third pin of the optocoupler U1 is also electrically connected to the first microprocessor.

8. A networked transmission system for control signals according to claim 7, characterized in that, The first receiving circuit includes a resistor R1, an optocoupler U5, a resistor R3, a transistor Q1, a freewheeling diode D2, and a relay K2. The first pin of the optocoupler U5 is electrically connected to the second microprocessor after being connected in series with the resistor R1. The emitter of the transistor Q1 is connected in series with the resistors R3 and R5 and then connected to the third pin of the optocoupler U5. The base of the transistor Q1 is connected between the resistors R3 and R5. The collector of the transistor Q1 is connected to one end of the freewheeling diode D2. The freewheeling diode D2 is connected in parallel with the coil of the relay K2. One end of the contact of the relay K2 is connected to the fourth pin of the optocoupler U5.

9. A networked transmission system for control signals according to claim 8, characterized in that, The second control circuit includes a switch S2, a resistor R7, an optocoupler U8, and a resistor R9. The switch S2 and the resistor R7 are connected in series and then connected to the first pin of the optocoupler U8. The third pin of the optocoupler U8 is connected to the resistor R9 and then grounded. The third pin of the optocoupler U8 is connected to the second microprocessor.

10. A networked transmission system for control signals according to claim 9, characterized in that, The second receiving circuit includes a resistor R6, an optocoupler U4, a resistor R8, a resistor R10, a transistor Q2, a relay K1, and a freewheeling diode D1. The first pin of the optocoupler U4 is electrically connected to the first microprocessor after being connected in series with the resistor R6. The emitter of the transistor Q2 is connected in series with the resistors R8 and R10 and then connected to the third pin of the optocoupler U4. The base of the transistor Q2 is connected between the resistors R8 and R10. The collector of the transistor Q2 is connected to one end of the freewheeling diode D1. The freewheeling diode D1 is connected in parallel with the coil of the relay K1. One end of the contact of the relay K1 is connected to the fourth pin of the optocoupler U4.

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