CN104009746A - Touch button device for explosion-proof electric equipment - Google Patents
Touch button device for explosion-proof electric equipment Download PDFInfo
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- CN104009746A CN104009746A CN201410123809.3A CN201410123809A CN104009746A CN 104009746 A CN104009746 A CN 104009746A CN 201410123809 A CN201410123809 A CN 201410123809A CN 104009746 A CN104009746 A CN 104009746A
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- touch button
- explosion
- touch
- button system
- circuit board
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- 239000002184 metal Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 50
- 239000002360 explosive Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 14
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention provides a touch button device for explosion-proof electric equipment. The touch button device comprises an explosion-proof shell, a touch sensor and a control circuit board, wherein a containing cavity is formed inside the explosion-proof shell; the touch sensor comprises a grounded metal plate, a metal sensing key and an insulating medium layer, the metal sensing key is arranged on the grounded metal plate, the insulating medium layer is arranged between the grounded metal plate and the metal sensing key, and the grounded metal plate is arranged on the inner surface of the explosion-proof shell; the control circuit board is connected with the touch sensor and arranged inside the explosion-proof shell, and an output interface of the control circuit board is electrically connected with a control system of the explosion-proof electric equipment. The touch sensor is used for detecting that an inductor gets close so that an operator can control the electric equipment inside the explosion-proof shell outside the explosion-proof shell. The touch button device is simple in structure and reliable in performance, and no hole needs to be formed in the explosion-proof shell. The touch button device for the explosion-proof electric equipment is simple in structure and high in safety performance.
Description
Technical field
The present invention relates to antiknock device technology, relate in particular to a kind of touch button system for electrical apparatus for explosive atmospheres.
Background technology
Along with the construction of colliery Modern Pit, increasing electric equipment is used under coal mine.And the electric equipment of these underground work must have explosion prevention function.In order to control these antiknock devices, prior art is to realize by mechanical pushbutton unit is installed on flameproof enclosure.
Fig. 1 is the structural representation for the pushbutton unit of electrical apparatus for explosive atmospheres in prior art, as shown in the figure, this pushbutton unit comprises mechanical button 12, button spindle 13 and copper sheathing 14, on the explosion-proof casing 11 of electric equipment, offer through hole, pushbutton unit is located in this through hole, wherein, button spindle 13 one end are positioned at the inside of explosion-proof casing 11, and be pressed on the button of being handled electric equipment (not marking electric equipment in figure), the other end of button spindle 13 is positioned at flameproof enclosure outside, and overcoat has mechanical button 12.Utilize mechanical button 12 control button bars 13 to trigger the button on electric equipment in Flameproof box.
The defect of existing this pushbutton unit is: complex structure, and volume is large; The gap of button spindle after using for a long time and between copper sheathing be because wearing and tearing become greatly, is to cause to have explosion-proof button electric equipment and lose quick-fried major reason, becomes the potential potential safety hazard of flame-proof type equipment.
Summary of the invention
For the problems referred to above of prior art, the invention provides a kind of touch button system for electrical apparatus for explosive atmospheres, to solve above-mentioned deficiency of the prior art.
A kind of touch button system for electrical apparatus for explosive atmospheres provided by the invention, comprising:
Inside is formed with the flameproof enclosure of accommodating cavity;
Touch sensor, comprise grounding plate, be arranged on the metal sensor key on described grounding plate, and be arranged on the insulating medium layer between grounding plate and metal sensor key, described grounding plate is arranged at the inner surface of described flameproof enclosure, and described metal sensor key is towards described flameproof enclosure outside; And
With the control circuit board that described touch panel sensor is connected, be arranged at flameproof enclosure inside, the output interface of described control circuit board is electrically connected with the control system of electrical apparatus for explosive atmospheres;
Wherein, be non-metal shell with the flameproof enclosure of touch sensor corresponding position.
Above-mentioned touch button system, described control circuit board comprises comparator, and described metal sensor key is electrically connected with the input of described comparator, and the output of described comparator is electrically connected with described output interface.
Above-mentioned touch button system, described control circuit board comprises at least two described comparators, at least two output interfaces and an encoder, described encoder has the input port corresponding with described number of comparators and at least two output ports; The output of each described comparator is electrically connected with each input port of described encoder respectively, and each output port of described encoder is electrically connected with corresponding described output interface respectively.
Above-mentioned touch button system, described metal sensor key is embedded on described grounding plate, and is provided with described insulating medium layer between described metal sensor key periphery and described installing hole.
Above-mentioned touch button system, described metal sensor key is circular, square or triangle.
Above-mentioned touch button system, described touch sensor is affixed on the non-metal shell inner surface of flameproof enclosure by insulated rubber film.
Above-mentioned touch button system, described non-metal shell is transparent member.
Above-mentioned touch button system, described transparent member is armorplate glass.
Above-mentioned touch button system, described armorplate glass presses on the inner surface of flameproof enclosure by pressing plate.
Touch button system for electrical apparatus for explosive atmospheres provided by the invention, detects approaching of inductor by touch sensor, makes operating personnel can outside flameproof enclosure, realize the control to electric equipment in shell.Touch button system is simple in structure, and dependable performance need to perforate on flameproof enclosure, thereby a kind of simple in structure and pushbutton unit for electrical apparatus for explosive atmospheres that security performance is high is provided.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation for the pushbutton unit of electrical apparatus for explosive atmospheres in prior art;
Fig. 2 is the structural representation of the touch button system embodiment for electrical apparatus for explosive atmospheres of the present invention;
Fig. 3 is the structural representation of touch sensor embodiment of the present invention;
Fig. 4 is the fundamental diagram of touch sensor of the present invention and control circuit board.
In figure:
11, explosion-proof casing 12, mechanical button 13, button spindle 14, copper sheathing
2, flameproof enclosure 3, armorplate glass 4, observation window 5, touch sensor
51, metal sensor key 52, grounding plate 53, insulating medium layer 6, pressing plate
7, control circuit board 8, electric equipment 9, comparator 10, encoder
101, encoder input 102, encoder output
Embodiment
Fig. 2 is the structural representation that comprises the touch button system for electrical apparatus for explosive atmospheres of the present invention; Fig. 3 is the structural representation of touch sensor embodiment of the present invention; As shown in Figures 2 and 3, a kind of touch button system for electrical apparatus for explosive atmospheres that the present embodiment provides, comprises that inside is formed with the flameproof enclosure 2 of accommodating cavity; Touch sensor 5, comprise grounding plate 52, be arranged on the metal sensor key 51 on grounding plate 52, and be arranged on the insulating medium layer 53 between grounding plate 52 and metal sensor key 51, grounding plate 52 is arranged at the inner surface of flameproof enclosure 2, and metal sensor key 51 is towards the outside of armorplate glass 3; And control circuit board 7, being arranged at flameproof enclosure 2 inside, and being electrically connected with touch sensor 5, the output interface of described control circuit board 7 is electrically connected with the control system of electrical apparatus for explosive atmospheres; The signal of telecommunication and predetermined threshold value that touch sensor 5 is inputted compare, and in the time that the signal of telecommunication reaches predetermined threshold value, send the control signal of carrying out corresponding operating for controlling electric equipment 8; Wherein, be non-metal shell with the observation window 4 of touch sensor 5 corresponding positions.
The touch button system that the present embodiment provides, described touch sensor 5 comprises grounding plate 52 and metal sensor key 51.Grounding plate 52 and metal sensor key 51 are conductor, are separated with a uniform dielectric 53 between the two.Like this, grounding plate 52 and metal sensor key 51 have just formed a parallel plate condenser.Under operating state, touch button system is in power-up state, and grounding plate 52 and metal sensor key 51 are all charged, have formed an equivalent capacity between the two; When people triggers metal sensor key 51, when people will point gradually near metal sensor key, finger enters the fringe field of this equivalent capacity, and as conductor, the conductive surface area of aforementioned equivalent capacity is increased, thereby causes the electric capacity of this equivalent capacity to increase.
Control circuit board 7 its capacitance size of connection metal sensor key 51 Real-Time Monitorings.Particularly, control circuit board 7 comprises comparator, and grounding plate 52 can pass through the direct ground connection of wire, and 51 of metal sensor keys can be electrically connected to by wire an input of this comparator; In the time that the equivalent capacity forming between grounding plate 52 and metal sensor key 51 changes, the voltage that is input to the described input of above-mentioned comparator also changes (due to grounding plate 52 ground connection, voltage is zero) thereupon.Meanwhile, another input of comparator is inputted the voltage of size for predetermined threshold value, when the voltage that is input to described input is during lower than the predetermined threshold value of another input section, the output of comparator is output low level (or high level) always, and approaching along with finger, when distance between itself and metal sensor key 51 reaches predetermined threshold value, the voltage that is input to the described input of comparator also reaches this predetermined threshold value, make the output of comparator transfer high level (or transferring low level to by original high level state) to by original low level state, this high level signal (or low level signal) also exports the control system of electric equipment to through the output interface of control circuit board 7, trigger this control system control electric equipment and carry out corresponding operating.
The touch button system for electrical apparatus for explosive atmospheres that the present embodiment provides, by flameproof enclosure, touch sensor and the flameproof enclosure external world are separated, realize the electrical explosion proof of touch button, and without perforate on flameproof enclosure, with of the prior art for compared with the pushbutton unit of electrical apparatus for explosive atmospheres, safe, simple in structure, volume is less, also avoided as mechanical botton simultaneously, because the long-term flameproof gap wearing and tearing between button spindle and the copper sheathing causing that uses becomes large disadvantage, effectively eliminate the potential safety hazard of equipment.
In an embodiment of the present invention, non-metal shell is preferably transparent member, and the material of transparent member is preferably armorplate glass 3.Armorplate glass 3 presses in the inner surface of flameproof enclosure 2 by pressing plate 6, and pressing plate 6 is fixedly connected with flameproof enclosure 2 by screw itself.Metal sensor key 51 and grounding plate 52 are affixed on the inner surface of explosion-proof transparent member, and convenient operation personnel observe and operation.In the present embodiment, preferably use insulated rubber film that touch tactility apparatus is affixed on armorplate glass 3, easy to operate, and reliable and stable.
In another the present embodiment of the present invention, non-metal shell parts 3 are nontransparent, on the outer surface of nontransparent, the position of corresponding metal sensor key 51 arranges mark, so that operating personnel accurately trigger metal sensor key.
In the present embodiment, touch sensor 5, on dimensional parameters is selected, can be preferably 10mm as metal sensor key 51 diameters of button, is equivalent to the mean size of adult's finger tip; And the shape pressing down in order to agree with finger, metal sensor key 51 can be circular, square or triangle, or other arbitrary shapes, but the inscribe diameter of a circle of its shape should be not less than the mean value of adult's finger tip.
Further, the quantity of above-mentioned metal sensor key 51 can arrange according to the function of concrete control object, for example, can be six, each for triggering electric equipment execution difference in functionality; Accordingly, on control circuit board 7, can have at least six inputs, its specific works principle is as follows.
Fig. 4 is the fundamental diagram of touch sensor of the present invention and control circuit board, as shown in Figure 4, can be integrated with the binary coder 10 of comparator 9 ,-tetra-outputs of sixteen bit input on control circuit board 7.This encoder 10 has 101, four encoder output ports 102 of 16 encoder input ports.An input of each comparator 9 connects a metal sensor key 51, and its another input is inputted the voltage of size for predetermined threshold value, and the output of 6 comparators 9 connects respectively six in 100 six input ports 101 of encoder.The output port 102 of encoder 10 joins with the control system of electric equipment, and control system is controlled accordingly according to the output of encoder 10.
When people's finger is in the time that the thick armorplate glass 3 of 10mm contacts or leave metal sensor key 51, the magnitude of voltage of the equivalent capacity being made up of grounding plate 52 and metal sensor key 51 changes, comparator 9 on control circuit board 7 is monitored this voltage signal always, in the time that the variation of this voltage signal is greater than the threshold value of comparator 9, comparator 9 will be exported a high level or low level signal, this signal is received by the input port 101 of encoder 10, encoder 10 is exported corresponding with it output status signal by four output ports 102 respectively according to the status input signal of each input port 101, for example, when first input port 101 receives high level signal, when remaining input terminal mouth 101 is low level signal, four output ports 102 of encoder 10 can be exported respectively high level, high level, low level, low level signal, control system receives after this level signal by above-mentioned four output interfaces, high level is converted to " 1 ", low level signal is converted to 0 ", the signal that above-mentioned four output ports 102 are exported has formed a binary sequence 1100 in control system, and according to the binary sequence receiving default binary sequence and corresponding relation of corresponding operating in control system, control system is determined corresponding operating and controlled electric equipment and carry out this operation.That is to say, any one level in the each input port 101 of encoder changes, the output state signal of each output port 102 changes thereupon, and four output ports 102 of encoder 10 will produce and the unique corresponding level output status signal of this status input signal, and output it to control system.These different output status signals are converted to corresponding with it binary sequence by control system, and then send corresponding control command according to this binary sequence to controlling electrical apparatus for explosive atmospheres for control system.
Like this, people operates the voltage change signal that touch sensor 5 produces and is finally converted into the binary sequence signal of electrical apparatus controlling system, and has realized the final control to electric equipment by control system.
Wherein, the input port 101 of encoder, output port 102 quantity can be according to concrete number of keys and the Location of requirement of concrete electric equipment; Can be 4 outputs of 8 inputs, or 8 outputs of 32 inputs etc.
In above-mentioned flow process, the metal sensor key 51 of touch sensor 5, by the bottom upward wiring at grounding plate 52 and metal sensor key 51, is connected with the pin of control circuit board 7.
For above-mentioned workflow, need to highlight, the comparator of control circuit board, the digital circuit that encoder all can be made up of hardware complete, and can use but uninevitable depended software program.
Each metal sensor key 51 centers 20mm of being separated by, the distance between metal sensor key 51 cylindricals is 10mm.Between metal sensor key 51 and grounding plate 52, be provided with a uniform external series gap, the size in this gap is an important design parameter.If gap arranges too smallly, too much electric field energy will directly be passed to ground.And if that gap arranges is too much, the mode of uncontrollable energy being passed through to covering.In the present embodiment, be of a size of 10mm by penetrator armorplate glass 3 in the case of selecting, this gap value is preferably 0.5mm.
Obvious, on the basis of above-described embodiment, for the control circuit board of other types, those skilled in the art can make and installs accurately and control in conjunction with the common practise of this area.Above-mentioned metal sensor key 51, grounding plate 52, dielectric 53 gaps and armorplate glass 3, in other size Selection beyond the present embodiment, in conjunction with the present embodiment, can test and calculate according to the conventional techniques means of this area and common practise.
In addition, flameproof enclosure in the present invention can surround an enclosed dustless or low dirt environment, therefore the present invention is equally applicable to the equipment that some are had relatively high expectations to clean environment degree, under the scene without requirement of explosion proof, can change the armorplate glass in the present invention 3 into common clear glass, with cost-saving.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (9)
1. for a touch button system for electrical apparatus for explosive atmospheres, it is characterized in that, comprising:
Inside is formed with the flameproof enclosure of accommodating cavity;
Touch sensor, comprise grounding plate, be arranged on the metal sensor key on described grounding plate, and be arranged on the insulating medium layer between grounding plate and metal sensor key, described grounding plate is arranged at the inner surface of described flameproof enclosure, and described metal sensor key is towards described flameproof enclosure outside; And
With the control circuit board that described touch panel sensor is connected, be arranged at flameproof enclosure inside, the output interface of described control circuit board is electrically connected with the control system of electrical apparatus for explosive atmospheres;
Wherein, be non-metal shell with the flameproof enclosure of touch sensor corresponding position.
2. touch button system according to claim 1, is characterized in that, described control circuit board comprises comparator, and described metal sensor key is electrically connected with the input of described comparator, and the output of described comparator is electrically connected with described output interface.
3. touch button system according to claim 2, it is characterized in that, described control circuit board comprises at least two described comparators, at least two output interfaces and an encoder, and described encoder has the input port corresponding with described number of comparators and at least two output ports; The output of each described comparator is electrically connected with each input port of described encoder respectively, and each output port of described encoder is electrically connected with corresponding described output interface respectively.
4. according to the touch button system described in claim 1-3 any one, it is characterized in that, described metal sensor key is embedded on described grounding plate, and is provided with described insulating medium layer between described metal sensor key and described grounding plate.
5. touch button system according to claim 4, is characterized in that, described metal sensor key is circular, square or triangle.
6. according to the touch button system described in claim 1-3 any one, it is characterized in that, described touch sensor is affixed on the inner surface of described non-metal shell by insulated rubber film.
7. touch button system according to claim 6, is characterized in that, described non-metal shell is transparent member.
8. touch button system according to claim 7, is characterized in that, described transparent member is armorplate glass.
9. touch button system according to claim 8, is characterized in that, described armorplate glass presses on the inner surface of flameproof enclosure by pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123809.3A CN104009746A (en) | 2014-03-28 | 2014-03-28 | Touch button device for explosion-proof electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123809.3A CN104009746A (en) | 2014-03-28 | 2014-03-28 | Touch button device for explosion-proof electric equipment |
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| Publication Number | Publication Date |
|---|---|
| CN104009746A true CN104009746A (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410123809.3A Pending CN104009746A (en) | 2014-03-28 | 2014-03-28 | Touch button device for explosion-proof electric equipment |
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| CN (1) | CN104009746A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406854A (en) * | 2015-12-29 | 2016-03-16 | 沈阳华兴防爆器材有限公司 | Touching-type non-contact explosion-proof button with status indicator lamps |
| CN105704280A (en) * | 2016-04-06 | 2016-06-22 | 广东欧珀移动通信有限公司 | Built-in anti-static side key structure and mobile terminal employing same |
| US9966948B2 (en) | 2016-02-17 | 2018-05-08 | Honeywell International Inc. | Inductor type touch input in explosion-proof electronic enclosure |
| CN112055494A (en) * | 2020-09-09 | 2020-12-08 | 深圳市尚为照明有限公司 | Explosion-proof emergency power supply device |
-
2014
- 2014-03-28 CN CN201410123809.3A patent/CN104009746A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406854A (en) * | 2015-12-29 | 2016-03-16 | 沈阳华兴防爆器材有限公司 | Touching-type non-contact explosion-proof button with status indicator lamps |
| CN105406854B (en) * | 2015-12-29 | 2019-05-24 | 沈阳华兴防爆器材有限公司 | A kind of explosion-proof type button of touch contactless carrier state indicator light |
| US9966948B2 (en) | 2016-02-17 | 2018-05-08 | Honeywell International Inc. | Inductor type touch input in explosion-proof electronic enclosure |
| CN105704280A (en) * | 2016-04-06 | 2016-06-22 | 广东欧珀移动通信有限公司 | Built-in anti-static side key structure and mobile terminal employing same |
| CN105704280B (en) * | 2016-04-06 | 2019-02-05 | Oppo广东移动通信有限公司 | A kind of built-in antistatic side key structure and its mobile terminal |
| CN112055494A (en) * | 2020-09-09 | 2020-12-08 | 深圳市尚为照明有限公司 | Explosion-proof emergency power supply device |
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Application publication date: 20140827 |
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