CN101951253A - Joystick - Google Patents
Joystick Download PDFInfo
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- CN101951253A CN101951253A CN 201010264765 CN201010264765A CN101951253A CN 101951253 A CN101951253 A CN 101951253A CN 201010264765 CN201010264765 CN 201010264765 CN 201010264765 A CN201010264765 A CN 201010264765A CN 101951253 A CN101951253 A CN 101951253A
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Abstract
The invention relates to a joystick. The joystick comprises a handle (103) with a casing (104) and also comprises an inductive electrode (105) and a control circuit (106), wherein the inductive electrode is arranged in the casing (104) and can form a capacitor (Cx) with the human body (115) outside the casing; the control circuit (106) is connected with the inductive electrode (105), and the control circuit ouputs a control signal when the capacitance of the capacitor (Cx) reaches a threshold. According to the technical scheme of the invention, the operator only needs to hold the joystick naturally when operating the joystick so as to connect the safe current loop without pressing the safe loop button with a finger, which brings convenience to the operator.
Description
Technical field
The present invention relates to a kind of control lever, particularly a kind of control lever that is used for medical systems such as X-ray machine, computer tomography (CT) equipment, magnetic resonance imaging (MRI) equipment.
Background technology
Medical system is applied more and more widely.For medical system, need guarantee that patient and operator are safe when moving component moves.So the security requirement to the motion control of moving component is very high, that is, motion must be strict controlled.For the control of moving component, generally include following three links:
The first, the obtaining of motion control signal.By the man-machine interface input motion control signal of control desk, the most frequently used have button and a control lever dual mode.
The second, the transmission of motion control signal.Generally the mode by switching signal or communication bus is transferred to motion controller from control desk.
The 3rd, the execution of motion.Generally carry out relevant motion according to motion control signal by the control motor of motion controller.
Because the transmission of motion control signal often will be subjected to the electrical equipment environmental interference extremely easily through very long cable and very complicated electric circumstance.Under situation about being interfered, just might cause the misoperation of moving component, cause potential safety hazard.Therefore, in the process of motor message transmission, provide a strong safe current loop of antijamming capability to come the enable signal of controlled motion controller usually, just can guarantee in the transmission course of motion control signal,, also can not produce misoperation even be interfered.
For key mode, as long as the contact of two-way parallel connection is provided, just can the drive current loop.And concerning the control lever mode, driving such safe current loop just needs extra circuit design.
As shown in Figure 1, existing control lever 800 mainly comprises base 801, water proof ring 802, handle 803 and safety return circuit button 804, and wherein, safety return circuit button 804 links to each other with medical system by two lead-in wire (not shown)s.Based on this control lever 800, the operator needs to use a finger to pin the safety return circuit button 804 at control lever 800 tops in operating process, connects safety return circuit, thereby makes moving component to move.Yet, for medical system, there are a lot of moving components to need motion for a long time, need the operator to operate the control lever relevant always, and easily cause operator's hand fatigue, thereby may cause misoperation with these moving components.Long this operation even also can cause operator's diseases such as hand strain.
U.S. Patent application US5161679A1 discloses aforesaid a kind of electric trigger switch that can be used for control lever, and this electricity trigger switch comprises a trigger, a trigger protector and a safety switch.
The technical staff in medical system field is seeking a kind of new control lever always, makes the operator not need to use finger to pin the safety return circuit button when the operation control lever, can connect the safe current loop.
Summary of the invention
In view of this, the present invention proposes a kind of control lever, its purpose is, makes operator's safety return circuit button that do not need to press...with one's finger when operation can connect safety return circuit.
Therefore, the invention discloses a kind of control lever, comprise a handle, also comprise with shell:
One induction electrode is arranged on described enclosure, and can form a capacitor with the human body of described housing exterior;
One control circuit is connected with described induction electrode, and this control circuit is exported a control signal when the capacitance of described capacitor (Cx) reaches a threshold value.
Preferably, described induction electrode is produced on first flexible PCB, and described first flexible PCB is wound in the described shell, and with described shell coaxial arrangement.
Preferably, described control lever also comprises a support frame, and first flexible PCB is wound on this support frame.
In a kind of embodiment, described control circuit is a singly-bound capacitance touch control chip.
Preferably, described control lever also comprises a voltage stabilizing circuit, and this voltage stabilizing circuit connects on the power input of described control circuit.
In a kind of embodiment, described voltage stabilizing circuit is a low pressure difference linear voltage regulator.
Alternatively, described induction electrode is produced on first flexible PCB, and described control circuit and voltage stabilizing circuit are arranged on described first flexible PCB.Perhaps, described control lever also comprises a support frame, and described support frame is provided with plurality of groove, in order to fixing described control circuit and voltage stabilizing circuit.
Preferably, described control lever further comprises a grounded circuit, and this grounded circuit is positioned at the inboard of described induction electrode.
Preferably, described grounded circuit is produced on second flexible PCB.
Preferably, described grounded circuit is connected with the ground terminal of described control circuit.
Preferably, described control lever also comprises a support frame, and described second flexible PCB is wound on this support frame.
Preferably, further between described induction electrode and described control circuit, be connected in parallel to a sensitivity feedback capacitor.
From such scheme as can be seen, because the present invention utilizes the induction electrode of action bars enclosure and outside capacitor of staff formation, the output control signal was connected the safe current loop when capacitance that control circuit monitors this capacitor reached certain threshold value, thereby make the operator not need the safety return circuit button that press...withes one's finger, only need staff when the operation control lever, to hold control lever naturally, can connect the safe current loop.And the present invention also is arranged on induction electrode on the flexible PCB, forms bigger contact area and stable structure, helps to obtain the signal to noise ratio of high capacitance sensor and the sensitivity that improves capacitor.
Description of drawings
To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art by describing the preferred embodiments of the present invention in detail below with reference to accompanying drawing, in the accompanying drawing:
Fig. 1 is the schematic diagram of existing control lever.
Fig. 2 is the schematic diagram of control lever according to an embodiment of the invention.
Fig. 3 is the internal structure schematic diagram of the handle of control lever according to an embodiment of the invention.
Fig. 4 is along the schematic diagram of the cross section of A-A ' in control lever shown in Figure 3.
Fig. 5 is the schematic perspective view after cutting along the cross section of A-A ' in control lever shown in Figure 3.
Fig. 6 is the circuit diagram of control lever according to an embodiment of the invention.
Fig. 7 is the structural representation of control lever shell in one embodiment of the invention.
Fig. 8 is the expansion schematic diagram of control lever internal structure according to an embodiment of the invention.
Wherein, Reference numeral is as follows:
100 control lever, 101 pedestals, 102 water proof rings
103 handles, 104 shells, 105 induction electrodes
106 control circuits, 107 power lines, 108 output lines
109 earthed circuits, 110 first flexible PCBs, 111 second flexible PCBs
112 support frames, 113 sensitivity feedback capacitor Cs, 114 voltage stabilizing circuits
115 operators' hand 116 sleeve pipes 117 end caps
800 control lever, 801 pedestals, 802 water proof rings
803 handles, 804 safety return circuit buttons
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
Fig. 2 is the schematic diagram of control lever according to an embodiment of the invention.As shown in Figure 2, from the outside of control lever, control lever 100 mainly comprises a handle 103.
Certainly, also can resemble and further comprise a pedestal 101 and a water proof ring 102 the existing control lever 800 shown in Figure 1.Pedestal 101 is used for fixing this control lever 100, and for example, pedestal 101 is provided with plurality of through holes, pedestal 101 can be fixed on the control desk together with whole control lever 100 by a plurality of screws.Water proof ring 102 is arranged between pedestal 101 and the handle 103, thereby is used for the electric circumstance that inside that anti-sealing or analog enter control lever 100 influences control lever inside.
Compare with existing control lever 800 shown in Figure 1, control lever 100 shown in Figure 2 does not comprise safety return circuit button 804.
Fig. 3 is the internal structure schematic diagram of the handle 103 of control lever 100 according to an embodiment of the invention.As shown in Figure 3, the handle 103 of control lever 100 comprises a shell 104, an induction electrode 105 and a control circuit 106.Wherein, induction electrode 105 is produced on one first flexible PCB 110, and first flexible PCB 110 is wound on the inside of shell 104, and with shell 104 coaxial arrangement.And as shown in Figure 6, the conductor of induction electrode 105 and shell 104 outsides (for example human body, especially operator's hand 115) forms a capacitor Cx together.When staff 115 during away from control lever 100, the capacitance of capacitor Cx is very little, and when staff 115 during near control lever 100, the capacitance of capacitor Cx increases.
As shown in Figure 7, shell 104 can comprise a hollow cylinder-shaped sleeve 116 and an end cap 117, and sleeve pipe 116 and end cap 117 can be fixed together by means such as screw thread, viscose glues.Also cylinder-shaped sleeve 116 and end cap 117 can be shaped as a part (not shown), thereby can avoid follow-up fitting operation.Shell 104 separates a fixing distance with the induction electrode 105 of inside and outside human body (that is, operator's shown in Figure 6 hand 115), helps obtaining stable sensitivity.In addition, because the certain contact area of need of work of capacitance sensor, columniform shell help distinguishing staff and other conductor, because there is not other conductor can be basically as staff, profile can be coincide with the profile of handle 103, thereby reaches enough contacts area.Shell 104 can use the insulating material of hard to make, for example nylon.The thickness of shell can be provided with as required by those skilled in the art, for example is set to 1mm.
As Fig. 3, Fig. 6 and shown in Figure 8, control lever 100 may further include a voltage stabilizing circuit 114, and this voltage stabilizing circuit 114 is connected on the power input of control circuit 106, promptly between the power input of power line 107 and control circuit 106.In one embodiment, adopt low pressure difference linear voltage regulator (LDO) as voltage stabilizing circuit 114.Owing to adopted voltage stabilizing circuit 114 to guarantee providing stable power voltage, can obtain the monitoring accuracy of higher control circuit 106 to control circuit 106.
Further, control lever 100 can comprise a grounded circuit 109.This grounded circuit is connected with the ground terminal of control circuit 106, thereby can avoid more line.Grounded circuit 109 can be a conductor sheet, for example Copper Foil etc.In order to cooperate with induction electrode 105 better, grounded circuit can be arranged on one second flexible PCB 111, and as Fig. 4, Fig. 5 and shown in Figure 8, second flexible PCB 111 is arranged on the inboard of first flexible PCB.Owing to adopted grounded circuit, can obtain higher capacitance sensor signal to noise ratio and more stable sensitivity.
As shown in Figure 4 and Figure 5, in order stably to support first flexible PCB 110 and the second gentle type circuit board 111, the control lever 100 of present embodiment may further include a support frame 112, the second flexible PCBs 111 and first flexible PCB 110 is successively set on this support frame 112 from inside to outside.Support frame 112 can be made by the insulating material of hard, for example nylon.Support frame 112 and shell 104 are fixed on support frame 112 and shell 104 between the two with first flexible PCB 110 and the second gentle type circuit board 111 together.
Fig. 8 is that schematic diagram is launched in the inside of the handle 103 of control lever 100 in a kind of execution mode.As shown in Figure 8, grounded circuit 109 is arranged on second flexible PCB 111, and induction electrode 105 is arranged on first flexible PCB 110.Control circuit 106 is connected with induction electrode 105 conductions, exports control signals (for example high level signal) thereby connection safe current loop by output line 108 when the capacitance that monitors capacitor Cx reaches threshold value; And when staff 115 leaves control lever 100, the control signal (for example low level signal) of control circuit 106 output thus the closed safe current circuit.Between power line 107 and control circuit 106, be connected with voltage stabilizing circuit 114, to guarantee stable power voltage.Second flexible PCB 111 and first flexible PCB 110 are arranged on the support frame 112 successively with reeling, that is, support frame 112 is supporting second flexible PCB 111 and first flexible PCB 110.
In one embodiment, plurality of groove can also be set on support frame,, make control circuit 106 and voltage stabilizing circuit 114 be fixed in these grooves in order to fixedly control circuit 106 and voltage stabilizing circuit 114.In another embodiment, control circuit 106 and voltage stabilizing circuit 114 are integrated on first flexible PCB 110.
As shown in Figure 6, for monitoring range that can regulating capacitor Cx, control lever 100 may further include a sensitivity feedback capacitor Cs 113, and this sensitivity feedback capacitor Cs is connected in parallel between induction electrode 105 and the control circuit 106.By regulating the size of sensitivity feedback capacitor Cs, monitoring range that can regulating capacitor Cx.Cs is big more, and then the monitoring range of Cx is big more; Cs is more little, and then the monitoring range of Cx is more little.In addition, at needs fixedly under the clear condition of induction electrode 105 and stationary monitoring scope, capacitance that can fixation of C s.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a control lever comprises a handle (103) with shell (104), it is characterized in that, also comprises:
One induction electrode (105) is arranged on described shell (104) inside, and can form a capacitor (Cx) with the human body (115) of described housing exterior;
One control circuit (106) is connected with described induction electrode (105), and this control circuit is exported a control signal when the capacitance of described capacitor (Cx) reaches a threshold value.
2. control lever according to claim 1 is characterized in that, described induction electrode (105) is produced on first flexible PCB (110), and described first flexible PCB is wound in the described shell (104), and with described shell (104) coaxial arrangement.
3. control lever according to claim 2 is characterized in that, described control lever also comprises a support frame (112), and first flexible PCB (110) is wound on this support frame.
4. control lever according to claim 1 is characterized in that, described control circuit (106) is a singly-bound capacitance touch control chip.
5. control lever according to claim 1 is characterized in that, described control lever also comprises a voltage stabilizing circuit (114), and this voltage stabilizing circuit connects on the power input of described control circuit (106).
6. control lever according to claim 5 is characterized in that, described voltage stabilizing circuit (114) is a low pressure difference linear voltage regulator.
7. control lever according to claim 5 is characterized in that, described induction electrode (105) is produced on first flexible PCB (110), and described control circuit (106) and voltage stabilizing circuit (114) are arranged on described first flexible PCB (110); Perhaps,
Described control lever also comprises a support frame (112), and described support frame (112) is provided with plurality of groove, in order to fixing described control circuit (106) and voltage stabilizing circuit (114).
8. control lever according to claim 1 is characterized in that, described control lever further comprises a grounded circuit (109), and this grounded circuit is positioned at the inboard of described induction electrode (105).
9. control lever according to claim 8 is characterized in that, described grounded circuit (109) is produced on second flexible PCB (111).
10. control lever according to claim 8 is characterized in that, described grounded circuit (109) is connected with the ground terminal of described control circuit (106).
11. control lever according to claim 8 is characterized in that, described control lever also comprises a support frame (112), and described second flexible PCB (111) is wound on this support frame.
12. control lever according to claim 1 is characterized in that, further is connected in parallel to a sensitivity feedback capacitor (Cs) between described induction electrode (105) and described control circuit (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264765 CN101951253A (en) | 2010-08-27 | 2010-08-27 | Joystick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264765 CN101951253A (en) | 2010-08-27 | 2010-08-27 | Joystick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101951253A true CN101951253A (en) | 2011-01-19 |
Family
ID=43454626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010264765 Pending CN101951253A (en) | 2010-08-27 | 2010-08-27 | Joystick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101951253A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761326A (en) * | 2011-04-29 | 2012-10-31 | 上海西门子医疗器械有限公司 | Control rod |
| CN102819281A (en) * | 2012-09-05 | 2012-12-12 | 武汉华中天经光电***有限公司 | Rotatable operating rod device |
| CN106821378A (en) * | 2017-03-21 | 2017-06-13 | 成都柔电云科科技有限公司 | A kind of portable muscular fatigue degree testing equipment based on electronics epidermis |
| CN106918380A (en) * | 2017-02-17 | 2017-07-04 | 大连理工大学 | A kind of micro- quality detecting method of high sensitivity and portable quality test device |
| CN107050853A (en) * | 2017-04-06 | 2017-08-18 | 北京小鸟看看科技有限公司 | A kind of game paddle and its touch control detecting method, a kind of game station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0701917A1 (en) * | 1994-09-15 | 1996-03-20 | Agria-Werke GmbH | Deadman's device, in particular for hand-guided and/or hand-hold motor-driven processing machines |
| CN201066836Y (en) * | 2007-04-28 | 2008-05-28 | 珠海西格医疗设备有限公司 | Handle and gas brake inductance switch for medical table |
| US20090079444A1 (en) * | 2007-07-31 | 2009-03-26 | Vermeer Manufacturing Company | Apparatus and method of capacitively sensing operator presence for a stump cutter |
| CN101453204A (en) * | 2007-11-21 | 2009-06-10 | E.G.O.电气设备制造股份有限公司 | Operating device for an electrical device and method of operating an operating device |
-
2010
- 2010-08-27 CN CN 201010264765 patent/CN101951253A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0701917A1 (en) * | 1994-09-15 | 1996-03-20 | Agria-Werke GmbH | Deadman's device, in particular for hand-guided and/or hand-hold motor-driven processing machines |
| CN201066836Y (en) * | 2007-04-28 | 2008-05-28 | 珠海西格医疗设备有限公司 | Handle and gas brake inductance switch for medical table |
| US20090079444A1 (en) * | 2007-07-31 | 2009-03-26 | Vermeer Manufacturing Company | Apparatus and method of capacitively sensing operator presence for a stump cutter |
| CN101453204A (en) * | 2007-11-21 | 2009-06-10 | E.G.O.电气设备制造股份有限公司 | Operating device for an electrical device and method of operating an operating device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761326A (en) * | 2011-04-29 | 2012-10-31 | 上海西门子医疗器械有限公司 | Control rod |
| CN102761326B (en) * | 2011-04-29 | 2016-05-04 | 上海西门子医疗器械有限公司 | A kind of control lever |
| CN102819281A (en) * | 2012-09-05 | 2012-12-12 | 武汉华中天经光电***有限公司 | Rotatable operating rod device |
| CN106918380A (en) * | 2017-02-17 | 2017-07-04 | 大连理工大学 | A kind of micro- quality detecting method of high sensitivity and portable quality test device |
| CN106918380B (en) * | 2017-02-17 | 2019-10-29 | 大连理工大学 | A kind of micro- quality detecting method of high sensitivity and portable quality test device |
| CN106821378A (en) * | 2017-03-21 | 2017-06-13 | 成都柔电云科科技有限公司 | A kind of portable muscular fatigue degree testing equipment based on electronics epidermis |
| CN107050853A (en) * | 2017-04-06 | 2017-08-18 | 北京小鸟看看科技有限公司 | A kind of game paddle and its touch control detecting method, a kind of game station |
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Application publication date: 20110119 |