CN218446949U - Wireless manual control box control device - Google Patents
Wireless manual control box control device Download PDFInfo
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- CN218446949U CN218446949U CN202222020826.7U CN202222020826U CN218446949U CN 218446949 U CN218446949 U CN 218446949U CN 202222020826 U CN202222020826 U CN 202222020826U CN 218446949 U CN218446949 U CN 218446949U
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Abstract
The utility model discloses a wireless manual box controlling means, include: a power source; the first enabling switch is electrically connected with the power supply at one end; a second enable switch, a common terminal of the second enable switch being electrically connected to the other terminal of the first enable switch; the common end of the relay is electrically connected with the normally-open end of the second enabling switch; the wireless transmitting circuit is electrically connected to the normally open end of the relay; and one end of the detection circuit is electrically connected to the first enabling switch and the second enabling switch, and the other end of the detection circuit is electrically connected to the normally-closed end of the relay. The utility model provides a simple structure, trouble can discover, do not rely on the wireless manual box controlling means of software simultaneously.
Description
Technical Field
The utility model relates to a radiotherapy equipment controller field especially relates to a wireless manual box controlling means.
Background
In electron accelerator or proton therapy systems, the use of a wireless hand-controlled box would facilitate control of the device. According to the requirements of relevant regulations on the operation of manual control boxes, the manual control boxes need to meet normal functions on the one hand and analyze various fault states on the other hand. Thus, the device can only be moved by the operator by simultaneously and continuously actuating two switches on the manual control box, at least one of which is hard-wired or has a switch function of equal safety. However, when there is an abnormal state, the safety of the switching function is difficult to be ensured. First, the individual components used need to be reliable, making the system less likely to enter an abnormal state. Secondly, the design should ensure that in the event of a single failure, the system is still safe and the failure can be discovered.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wireless manual box controlling means designs a simple structure, the trouble can be discover, does not rely on the enable switch of software simultaneously.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model provides a wireless manual box controlling means, it includes:
a power source;
one end of the first enabling switch is electrically connected to the power supply;
a second enable switch, a common terminal of the second enable switch being electrically connected to the other terminal of the first enable switch;
the public end of the relay is electrically connected to the normally open end of the second enabling switch;
the wireless transmitting circuit is electrically connected to the normally open end of the relay; and
and one end of the detection circuit is electrically connected to the first enabling switch and the second enabling switch, and the other end of the detection circuit is electrically connected to the normally-closed end of the relay.
In an embodiment of the present invention, the detection circuit includes a pull-up resistor and a pull-down resistor, the pull-up resistor is electrically connected to one end of the first enable switch, and the pull-down resistor is electrically connected to the other end of the first enable switch.
In an embodiment of the present invention, a ratio of the resistance of the pull-up resistor to the resistance of the pull-down resistor is greater than 3.
In an embodiment of the present invention, the detection circuit further includes a pull-down resistor electrically connected to the normally open end of the second enable switch and the common end of the relay.
In an embodiment of the present invention, the detection circuit includes a jitter removing circuit electrically connected to the normally closed end of the second enable switch.
In an embodiment of the present invention, the detection circuit includes a monostable circuit, one end of the monostable circuit is electrically connected to the jitter removing circuit, and the other end of the monostable circuit is electrically connected to the relay.
In an embodiment of the present invention, the detection circuit includes a current limiting resistor, and the current limiting resistor is electrically connected to the monostable circuit and the relay.
In an embodiment of the present invention, the detection circuit includes a first light emitting diode, and an anode of the first light emitting diode is electrically connected to the current limiting resistor.
In an embodiment of the present invention, the detection circuit includes a second light emitting diode, and a negative electrode of the second light emitting diode is electrically connected to the normally closed end of the relay.
In an embodiment of the present invention, the anode of the second light emitting diode is electrically connected to the power supply.
As mentioned above, the utility model provides a pair of wireless manual control box controlling means sets up switch and relay. When the switches are all in a pressed state and the relay coil is electrified, the wireless transmitting circuit connected with the relay can be powered, and therefore signals are sent. In this embodiment, a wireless manual control box switch is provided that is simple, easy to implement, and safe without relying on any software, ensures safety under a single fault, and the fault can be timely discovered and handled by an operator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram of a wireless manual control box switch;
fig. 2 is a circuit diagram of a wireless manual control box switch.
Description of the element reference numerals
100-a power supply; 200-a first enable switch; 300-a second enable switch; 400-a relay; 500-a wireless transmit circuit; 600-a detection circuit; 601-a de-jitter circuit; 602-monostable circuit; r1-pull-up resistor; r2 — first pull-down resistance; r3-a second pull-down resistor; r4-current limiting resistor; LED 1-first light emitting diode; LED 2-second light emitting diode.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all 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.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure has no technical essence, and any modification of the structures, changes of the ratio relationships, or adjustment of the sizes, should fall within the scope that the present disclosure can cover without affecting the efficacy and the achievable purpose of the present disclosure.
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated whereby a feature defined as "first", "second" may explicitly or implicitly include one or more of such features.
Currently, the movement of the medical electrical equipment components is operated inside the treatment room and is generally controlled by a manual control box. The relevant legislation has made strict requirements on the implementation of the manual box switch function. The embodiment provides a wireless manual control box control device, which is simple and reliable in structure, can realize a switching function under the condition that safety does not depend on software, and realizes fault detection.
Referring to fig. 1, in an embodiment of the present invention, the wireless manual control box control device includes a power source 100, a first enable switch 200, and a second enable switch 300. The output terminal of the power supply 100 is connected to the input terminal of the first enable switch 200, and the output terminal of the first enable switch 200 is connected to the input terminal of the second enable switch 300. The power supply 100 is connected with each component to supply power to the whole system. In this embodiment, the first enable switch 200 and the second enable switch 300 are mechanical switches and are disposed on two sides of the manual control box, so as to effectively prevent the manual control box from being improperly placed and causing a key pressing operation to cause a malfunction. When the operator grips the manual control box, this action is transmitted through a mechanical structure, so that the first enable switch 200 and the second enable switch 300 are simultaneously pressed, thereby generating a motion enable signal.
Referring to fig. 1, in an embodiment of the present invention, the wireless manual control box control device includes a relay 400 and a wireless transmitting circuit 500. The output terminal of the second enable switch 300 is connected with the input terminal of the relay 400, and the output terminal of the relay 400 is connected with the input terminal of the wireless transmission circuit 500. The motion enabling signals generated by the first enabling switch 200 and the second enabling switch 300 are transmitted to the wireless transmitting circuit 500 through the relay 400 to be encoded, and finally, wireless signals are sent out.
Referring to fig. 1, in an embodiment of the present invention, the wireless manual control box control device includes a detection circuit 600. The output of the first enable switch 200 is connected to the input of the detection circuit 600, and the output of the second enable switch 300 is connected to the input of the detection circuit 600. The detection circuit 600 can detect the abnormal states of the first enable switch 200 and the second enable switch 300 in the functional implementation, so as to find out the fault and deal with the fault in time. The output of the detection circuit 600 is connected to the input of the relay 400. When the detection circuit 600 completes the fault detection and the determination circuit can safely complete the switching function, the power supply 100 will be connected to the wireless transmission circuit 500 through the relay 400, and the signal transmission is realized through the wireless transmission circuit 500.
Referring to fig. 2, in an embodiment of the present invention, the detection circuit 600 includes a first pull-down resistor R2. The common terminal COM of the first enable switch 200 is connected to the power supply 100, and the normally-open terminal NO is connected to the first pull-down resistor R2 and to the common terminal COM of the second enable switch 300. In the present embodiment, the second enable switch 300 is provided with, for example, a single-pole double-throw switch. The first enabling switch 200 only uses the common terminal and the normally open terminal, so that the connection of the two terminals is exchanged or other types of switches are selected, and the working principle is not influenced. However, the first enable switch 200 is also the same type as the second enable switch 300 for convenience of type selection. The same switch keys are arranged on two sides of the manual control box, and the operators feel the same when touching, so that the pressing force of the switch can be controlled more easily.
Referring to fig. 2, in an embodiment of the present invention, the detection circuit 600 includes a second pull-down resistor R3, a pull-up resistor R1, and a de-jitter circuit 601. In this embodiment, the de-jitter circuit 601 may be implemented using a resistor-capacitor network connected with a schmitt trigger as a logic gate circuit of the input stage. Because the de-jitter circuit 601 will generate a certain delay, the delay should be controlled to be under tens of milliseconds in order not to generate an effect that is noticeable to the operator. In the present embodiment, the relay 400 is a single-pole double-throw relay. The normally-open end NO of the second enable switch 300 is connected to the second pull-down resistor R3 and to the common terminal COM of the relay 400. The normally closed terminal NC of the second enable switch 300 is connected to the power supply 100 through a pull-up resistor R1, and is connected to the debounce circuit 601. In this embodiment, the resistance of the pull-up resistor R1 is much larger than the resistance of the first pull-down resistor R2, so that the input level of the de-jitter circuit 601 is low when neither the first enable switch 200 nor the second enable switch 300 is pressed.
Referring to fig. 2, in an embodiment of the present invention, the detection circuit 600 includes a monostable 602. In this embodiment, the monostable 602 can be implemented by a conventional chip capable of implementing a monostable, and other chips such as 555, 74xx123, 74xx221, etc. are provided. Meanwhile, the digital circuit such as a counter can also be adopted for realization. The monostable 602 has one end connected to the jitter removal circuit 601 and the other end connected to the relay 400. In this embodiment, the monostable 602 is a rising edge triggered monostable 602. The output of the de-jitter circuit 601 is sent to the monostable 602 triggered by the rising edge, and after the monostable 602 detects the rising edge of the input signal, a high level is output for a period of time and sent to the relay 400, so as to drive the coil. In this embodiment, the high level is output for a period of time that ensures that a single movement operation is completed for a maximum period of time, and the period of time is as short as possible. For a wireless hand-operated cassette applied to a medical accelerator, this time may be set to be slightly longer than 1 minute, setting for example 1 minute 30 seconds. Meanwhile, in order to ensure the driving capability of the subsequent relay 400, an appropriate driving circuit, such as a MOS transistor or a triode, may be added to the output of the monostable 602.
Referring to fig. 2, in one embodiment of the present invention, when the de-jitter circuit 601 uses a schmitt trigger with a non-logic output, the monostable 602 will use falling edge triggering. When the monostable 602 adds a driving circuit with a non-logic property, the output of the monostable 602 is a low window.
Referring to fig. 2, in an embodiment of the present invention, the detection circuit 600 includes a current limiting resistor R4 and a first light emitting diode LED1. In the present embodiment, the first light emitting diode LED1 may be a bulb, a liquid crystal display, or the like. The other end of the monostable 602 is also connected to a current limiting resistor R4, and the current limiting resistor R4 is connected to the anode of the first light emitting diode LED1. By observing whether the first light emitting diode LED1 is lit as expected, it is found whether the detection circuit 600 itself has a failure.
Referring to fig. 2, in an embodiment of the present invention, the detection circuit 600 includes a second light emitting diode LED2. In this embodiment, the second light emitting diode LED2 may also be a light bulb, a liquid crystal display, or the like. The normally open end NO of the relay 400 is connected to the power supply of the wireless transmitting circuit 500 to ensure that NO wireless signal is sent from the wireless hand control box when the power supply of the wireless transmitting circuit 500 is not powered. The cathode of the second light emitting diode LED2 is connected to the normally closed terminal NC of the relay 400, and the anode is connected to the power supply 100. By observing whether the second light emitting diode LED2 is lit as expected, it is found whether the relay 400 has a failure that cannot be turned off.
Referring to fig. 2, in an embodiment of the present invention, the first enable switch 200 fails, the device cannot move as expected, but the failure can be detected. When the first enable switch 200 cannot be turned on, the power supply 100 cannot be connected to the wireless transmitting circuit 500, and the wireless transmitting circuit 500 cannot transmit a wireless signal, so that the manual control box control end system does not move. When the first enable switch 200 cannot be turned off, the second enable switch 300 is released, the input of the de-jitter circuit 601 is connected to the power supply 100 through the first enable switch 200, and the input is at a high level. Pressing second enable switch 300 causes the input of de-dither circuit 601 to be connected to power supply 100 through pull-up resistor R1, and the input remains high. Therefore, when the first enable switch 200 is disabled, no matter how the operator operates, a rising edge cannot be formed in the de-jitter circuit 601 to trigger the monostable 602. The coil of the relay 400 will also not be energized and the power supply 100 will not be able to be connected to the wireless transmitter circuit 500 through the relay 400. The signal can not be sent out, and the wireless manual control box control end system can not generate movement, and misoperation or collision can not occur, so that the safety is ensured.
Referring to fig. 2, in an embodiment of the present invention, when the second enable switch 300 fails, the device cannot move as expected, but the failure can be detected. When the second enable switch 300 cannot be turned on to the normally-on terminal NO, the power supply 100 cannot be turned on with the wireless transmission circuit 500 regardless of whether it can be turned off from the normally-off terminal NC, and thus NO wireless signal is transmitted. When the second enable switch 300 cannot turn off the normally-open terminal NO, it must not be turned on with the normally-closed terminal NC. The input to the debounce circuit 601 is pulled high through pull-up resistor R1 such that a rising edge cannot be formed to trigger the monostable 602, resulting in the coil of the relay 400 not being energized. Therefore, when the second enable switch 300 is disabled, the power supply 100 cannot be turned on with the wireless transmission circuit 500 regardless of the operator's operation. The signal can not be sent out, the wireless manual control box control end system can not move, and misoperation or collision can not occur, so that the safety is ensured.
Referring to fig. 2, in an embodiment of the present invention, when the first enable switch 200 and the second enable switch 300 are pressed, the rising edge triggered monostable 602 outputs a pulse, so that the coil of the relay 400 is energized. At this time, when the first enable switch 200 cannot disconnect the power and the second enable switch 300 can disconnect the power, the system stops moving, thereby securing safety. When the first enabling switch 200 can cut off the power and the second enabling switch 300 cannot cut off the power, the system also stops moving, thereby ensuring safety. When the first enable switch 200 and the second enable switch 300 are damaged at the same time, this situation does not meet the requirements on single-fault safety of the general standard IEC60601-1 of medical electrical equipment and the corresponding national standard GB 9706.1. And the probability that two switches are damaged within one or two minutes at the same time can be calculated through the standard, so that the switch meeting the safety requirement can be selected according to the standard. Meanwhile, since the first enable switch 200 and the second enable switch 300 are safety-related by themselves, reliability thereof is high, and a service life thereof is also generally several years. Therefore, the first enabling switch 200 and the second enabling switch 300 fail when being released, and the safety of the system can still be ensured.
Referring to fig. 2, in an embodiment of the present invention, after the first enable switch 200 and the second enable switch 300 are pressed, the relay 400 cannot be turned on, and cannot generate the driving signal, so that the power source 100 cannot be connected to the wireless transmitting circuit 500, and the system is safe. When the relay 500 should not be turned on, the driving signal is outputted, and at this time, the first enabling switch 200 and the second enabling switch 300 can be released, and the power supply 100 and the wireless transmitting circuit 500 are disconnected, so that the system is safe. Therefore, if the detection circuit 600 itself is damaged, the first light emitting diode LED1 cannot be lit as desired, and the operator can observe the failure and deal with it in time.
Referring to fig. 2, in an embodiment of the present invention, when the coil of the relay 400 is energized and cannot be conducted to the normally open end NO, the relay 400 cannot be connected to the power source of the wireless transmitting circuit 500 NO matter whether it can be disconnected from the normally closed end NC, so that the system is safe. When the coil of the relay 400 is powered off, the normally open terminal NO cannot be disconnected, and cannot be conducted with the normally closed terminal NC, the power supply 100 and the wireless transmitting circuit 500 can be disconnected through the first enabling switch 200 and the second enabling switch 300, and at this time, an operator can observe that the first light emitting diode LED1 and the second light emitting diode LED2 are simultaneously lighted, so that the system is also safe.
To sum up, the utility model provides a pair of wireless manual box controlling means before the operator uses wireless manual box, at first, whether the inspection first emitting diode LED1 is the off state, whether second emitting diode LED2 is the on state. Next, the first enable switch 200 and the second enable switch 300 are pressed, and it is checked whether the first light emitting diode LED1 is in a lit state and the second light emitting diode LED2 is in a extinguished state. After the steps are completed, the switch can be proved to be safe, so that the switch can be used safely. When an operator uses the wireless manual control box, the wireless manual control box control device designed by the embodiment can ensure the safety under any single fault condition, and the fault can be discovered and processed by the operator in time.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A wireless, hand-controlled cassette control device, comprising:
a power source;
the first enabling switch is electrically connected with the power supply at one end;
a second enable switch, a common terminal of the second enable switch being electrically connected to the other terminal of the first enable switch;
the common end of the relay is electrically connected with the normally-open end of the second enabling switch;
the wireless transmitting circuit is electrically connected to the normally open end of the relay; and
and one end of the detection circuit is electrically connected to the first enable switch and the second enable switch, and the other end of the detection circuit is electrically connected to the normally-closed end of the relay.
2. The wireless manual control box control device according to claim 1, wherein the detection circuit comprises a pull-up resistor and a pull-down resistor, the pull-up resistor is electrically connected to one end of the first enable switch, and the pull-down resistor is electrically connected to the other end of the first enable switch.
3. The wireless manual control box control device according to claim 2, wherein a ratio of the resistance value of the pull-up resistor to the resistance value of the pull-down resistor is greater than 3.
4. The wireless manual control box control device of claim 1, wherein the detection circuit further comprises a pull-down resistor electrically connected to the normally open end of the second enable switch and the common end of the relay.
5. The wireless manual cassette control of claim 1, wherein said detection circuit includes an anti-jitter circuit, said anti-jitter circuit being electrically connected to a normally closed terminal of said second enable switch.
6. The wireless manual control box control of claim 5, wherein said detection circuit comprises a monostable circuit having one end electrically connected to said debounce circuit and another end electrically connected to said relay.
7. The wireless manual control box control device of claim 6, wherein the detection circuit includes a current limiting resistor electrically connected to the monostable and the relay.
8. The wireless manual control box control device according to claim 7, wherein the detection circuit comprises a first light emitting diode, and an anode of the first light emitting diode is electrically connected to the current limiting resistor.
9. The wireless manual control box control device of claim 1, wherein the detection circuit comprises a second light emitting diode, and a cathode of the second light emitting diode is electrically connected to the normally closed end of the relay.
10. The wireless manual control box control device of claim 9, wherein the anode of the second light emitting diode is electrically connected to the power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222020826.7U CN218446949U (en) | 2022-08-02 | 2022-08-02 | Wireless manual control box control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222020826.7U CN218446949U (en) | 2022-08-02 | 2022-08-02 | Wireless manual control box control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218446949U true CN218446949U (en) | 2023-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222020826.7U Active CN218446949U (en) | 2022-08-02 | 2022-08-02 | Wireless manual control box control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218446949U (en) |
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2022
- 2022-08-02 CN CN202222020826.7U patent/CN218446949U/en active Active
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