CN105470011A - Minimum connection point type multi-channel scanning device and multi-channel scanning method - Google Patents
Minimum connection point type multi-channel scanning device and multi-channel scanning method Download PDFInfo
- Publication number
- CN105470011A CN105470011A CN201610001918.7A CN201610001918A CN105470011A CN 105470011 A CN105470011 A CN 105470011A CN 201610001918 A CN201610001918 A CN 201610001918A CN 105470011 A CN105470011 A CN 105470011A
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- China
- Prior art keywords
- terminal
- contact point
- subchannel
- copper sheet
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- Coupling Device And Connection With Printed Circuit (AREA)
- Push-Button Switches (AREA)
Abstract
The invention relates to a minimum connection point type multi-channel scanning device and a multi-channel scanning method. The multi-channel scanning device comprises a main channel terminal I, a sub channel terminal II and a main scanning switch copper sheet, wherein the main scanning switch copper sheet is connected with the main channel terminal I, a plurality of contact points I are arranged on the main scanning switch copper sheet, contact points II are fixedly connected onto the sub channel terminal II, the contact points I are fixedly connected with the main scanning switch copper sheet and can vertically move along a vertical direction, and a down-press device is arranged above the main scanning switch copper sheet and can be used for downwards pressing the contact points I to make the contact points I closely contacted with the contact points II. The channel scanning method and scanning device adopted by the invention is a minimum connection point type multi-channel scanning mode, an original scanner connection scheme is simplified, and the production process is simplified; two copper wires with large introduction errors are eliminated, the contact resistance of a channel is reduced, the contact resistance between the main channel terminal and the sub channel terminal can be controlled within 5 milliohms, the parasitic potential index is further increased with the reduction of an intermediate link, and the accuracy of the test/calibration process is improved.
Description
Technical field
The present invention relates to electric logging equipment field, be specially the minimum connection point type multichannel scanning means in metering industry and scan method.
Background technology
Multichannel scanning switch is that one is widely used in measuring industry, a kind of controlled, the device that multiple subchannel can be connected with main channel timesharing, is usually used in calibrating, the calibration with signal of telecommunication input/output function instrument, the scanning sample etc. of multiple analog electrical signal.
As the multichannel scanning switch that temperature measurement field uses in a large number, optimal situation after adding switch in signalling channel is zero on the impact of original signalling channel, and the key parameter affecting signalling channel mainly contains four, comprising: parasitic electromotive force, contact resistance, equivalent parallel electric capacity, equivalent series inductance.Wherein, parasitic electromotive force and contact resistance are the two indices that metering industry is paid close attention to the most.At present, the multichannel scanning switch normally low potential scanning switch that metering industry uses, by using the metal material of low contact potential and artificial Matching and modification in a large number, ensures the low potential index of scanning switch and the consistency of interchannel technical indicator.The common each main channel of mechanical type multichannel scanner and the connection of subchannel will comprise 13 links, as shown in Figure 1, (1) main, the subchannel contact of the contact point of the terminal of main channel terminal I-(2) and lead-in wire I tie point-(3) go between I-(4) go between I and copper sheet tie point (5) main scanning switch copper sheet-(6) I-(7) (8) contact point II-(9) divide scanning switch copper sheet-(10) go between II and copper sheet tie point-(11) go between II-(12) terminal and the II tie point-(13) subchannel terminal that goes between.Which type of material no matter such structure adopt, because intermediate link is more, contact resistance parameter does not have the change of matter yet, for " contact resistance " index, except the metallic conductor that employing sectional area is larger, the solution that there is no, larger contact resistance parameter can affect the index of signal sampling, such as: electric current faint in signalling channel by producing corresponding voltage after contact resistance, and then increases the error in test process.Therefore, it is comparatively large to there is aisle resistance in current multichannel scanning switch, and usually at more than 100m Ω, and parasitic electromotive force index cannot obtain further raising, complex manufacturing, and equipment adopts the mode of human weld, and interchannel consistency is not easy to control; The contact mode that simultaneously traditional scanning switch uses disk scanner to rotate is easy to wear, and useful life is not long.
Summary of the invention
Object of the present invention will provide a kind of reasonable in design exactly, the little multi-channel scan method of parasitic electromotive force index, contact resistance and minimum connection point type multichannel scanning means can be improved, consistency between its scan channel is good, stable performance, and is easy to produce.
For achieving the above object, the technical solution used in the present invention is:
A kind of minimum connection point type multichannel scanning means, it comprises main channel terminal I, subchannel terminal II, the main scanning switch copper sheet be connected with main channel terminal I, main scanning switch copper sheet is provided with multiple contact point I, subchannel terminal II is fixedly connected with and has point of contact II, contact point I is fixedly connected with main scanning switch copper sheet, contact point I can vertically upper and lower displacement, hold-down devices is provided with above main scanning switch copper sheet, hold-down devices can press down contact point I, and makes it to be connected with contact point II close contact.
Described hold-down devices is the slide block moved horizontally driven by stepper motors, and stepper motor output shaft is connected with leading screw, and leading screw is other is arranged with slide bar in parallel, and slide block is nested with on slide bar and leading screw.Stepper motor output shaft is connected with leading screw by shaft coupling, and driven by motor slide block moves horizontally along leading screw, and slide block can make contact point I to bottom offset.
Described main scanning switch copper sheet is copper coin, copper coin is provided with the shell fragment corresponding with subchannel terminal II number and position, and shell fragment and copper coin are that integral type is connected, and on copper coin, contact point I is fixed on shell fragment end.
Further, be provided with space between shell fragment and copper coin, shell fragment is L shape, and only one end is connected with copper coin integral type, and this structure can ensure that shell fragment can produce the upper and lower displacement amount of certain amplitude.
Main scanning switch copper sheet is provided with contact point I the same number of insulation projection, it is arranged on contact point I place, specifically can be arranged in the middle part of shell fragment or directly over contact point I, slide block lower end can with bump contact squeeze flow, and drive and press down contact point I and contact with contact point II and connect, further, slide block lower end is provided with projection, protruding and projection edge is inclined-plane or cambered surface, the projection of slide block lower end is strip, four (row) copper sheet contact points can be made to close simultaneously, (front and back term wants consistent to be convenient to main scanning switch copper sheet, so do not need to write copper sheet I) contact with subchannel terminal II.
Described main scanning switch copper sheet and contact point I and subchannel terminal II are all designed to integral structure with contact point II.
A kind of multi-channel scan method based on above-mentioned scanning means, main channel terminal I is connected with electric logging equipment, all subchannel terminals II are connected with measured piece, slide block is driven to move to above a certain subchannel terminal II by control step motor, and slide block is connected with the bump contact on main scanning switch copper sheet, press down contact point I to make it and contact point II compact siro spinning technology, complete main channel terminal I to be connected with subchannel terminal II, after this channels operation completes, control step motor removing, slide block is made to move to above another subchannel terminal II, press down contact point I main channel terminal I and complete the shortest connection with this subchannel terminal II, the rest may be inferred, complete the sweep test of all subchannel terminals II.
Beneficial effect of the present invention is:
The channel scanning method that the present invention takes and scanning means are minimum connection point type multichannel scan mode, whole link as shown in Figure 2, is reduced to 7 by connected mode: main channel terminal I-terminal and copper coin tie point-copper coin-contact point I-main, subchannel contact-contact point II-subchannel terminal II.Wherein, main channel terminal I is fixedly connected with main scanning switch copper sheet, and contact point II and subchannel terminal II are structure as a whole.This structure enormously simplify original scanner connection scheme, simplifies production technology; Eliminate and wherein introduce two maximum copper conductors of error, substantially reduce the contact resistance of passage, within caning be controlled in 5m Ω, the minimizing of intermediate link, further increase parasitic electromotive force index, make the measure error of electric logging equipment drop to the limit, and indirectly improve the certainty of measurement of electric logging equipment; Meanwhile, slide block presses down the mode that projection makes upper and lower contact connect, and replaces original disk scanner rotation mode, improves the useful life of contact in equipment greatly.
Accompanying drawing explanation
Fig. 1 is traditional scanning switch syndeton schematic diagram;
Fig. 2 is patent Example anatomical connectivity schematic diagram of the present invention;
Fig. 3 is patent Example structural representation of the present invention;
Fig. 4 is slide block and main scanning switch copper sheet position relationship schematic diagram in patent Example of the present invention;
Fig. 5 is subchannel terminal II and main scanning switch copper sheet position relationship schematic diagram in patent Example of the present invention.
1. main channel terminal I, 2. terminal and lead-in wire tie point, 3. go between I, 4. lead-in wire and copper sheet tie point, 5. main scanning switch copper sheet, 6. contact point I, 7. main subchannel contact, 8. contact point II, 9. point scanning switch copper sheet, 10. go between II and copper sheet tie point, 11. lead-in wire II, 12. subchannel terminals II and lead-in wire II tie point, 13. subchannel terminals II, 15. stepping motors, 16. leading screws, 17. slide bars, 18. slide blocks, 19. shell fragments, 20. projections.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the present invention.On the contrary, they only with as in appended claims describe in detail, the example of device that aspects more of the present invention are consistent.
A kind of thermocouple as shown in Figure 2 detects and connects point type multichannel scanning means with minimum, it comprises main channel terminal I 1, subchannel terminal II 13, the main scanning switch copper sheet 5 be connected with main channel terminal I 1, main scanning switch copper sheet 5 is provided with multiple contact point I 6, subchannel terminal II 13 is fixedly connected with and has point of contact II 8, contact point I 6 is fixedly connected with main scanning switch copper sheet 5, contact point I 6 can vertically upper and lower displacement, hold-down devices is provided with above main scanning switch copper sheet 5, hold-down devices can press down contact point I 6, and make it to be connected with contact point II 8 close contact.
As shown in Figure 3, described hold-down devices is the slide block 18 moved horizontally driven by stepping motor 15, and stepping motor 15 output shaft is connected with leading screw 16, and leading screw 16 is other is arranged with slide bar 17 in parallel, and slide block 18 is nested with on slide bar 17 with leading screw 16.Stepper motor output shaft is connected with leading screw 16 by shaft coupling, and driven by motor leading screw drives slide block 18 to move along slide bar horizontal direction, and slide block 18 can make contact point I 6 to bottom offset.
As shown in Figure 5, described main scanning switch copper sheet 5 is copper coin, copper coin is provided with the shell fragment corresponding with subchannel terminal II 13 number and position, and shell fragment and copper coin are that integral type is connected, and on copper coin, contact point I 6 is fixed on shell fragment end.
Further, be provided with space between shell fragment and copper coin, shell fragment is L shape, and only one end is connected with copper coin integral type, and this structure can ensure that shell fragment can produce the upper and lower displacement amount of certain amplitude.
As accompanying drawing 4, shown in 5, main scanning switch copper sheet 5 is provided with contact point I 6 the same number of insulation projection 20, it is arranged on contact point I place, specifically can be arranged in the middle part of shell fragment or directly over contact point I, slide block 18 lower end can contact with projection 20 and connect, and drive and press down contact point I 6 and contact with contact point II 8 and connect, further, slide block 18 lower end is provided with projection, protruding and projection 20 edge is inclined-plane, the projection of slide block 18 lower end is strip, four (row) copper sheet contact points can be made to close simultaneously, be convenient to main scanning switch copper sheet 5 contact with subchannel terminal II 13.
Described subchannel terminal II 13 is designed to integral structure with contact point II 8.
A kind of multi-channel scan method based on above-mentioned scanning means, main channel terminal I is connected with electric logging equipment, all subchannel terminals II are connected with measured piece, slide block is driven to move to above a certain subchannel terminal II by control step motor, and slide block is connected with the projection on main scanning switch copper sheet 5, press down contact point I to make it and contact point II compact siro spinning technology, complete main channel terminal I to be connected with subchannel terminal II, after this measured piece completes test, control step motor removing, slide block is made to move to above another subchannel terminal II, pressing down contact point II makes main channel terminal I complete the shortest connection with this subchannel terminal II, the rest may be inferred, complete the sweep test of all subchannel terminals II.
Whole link as shown in Figure 2, is reduced to 7 by the connected mode of the present embodiment: main channel terminal I 1-terminal and copper sheet tie point-copper sheet-contact point I-main, subchannel contact-contact point II-subchannel terminal II 13.Wherein, subchannel contact and subchannel terminal II 13 are designed to integrative-structure.This structure enormously simplify original scanner scheme, and eliminates two copper conductors that wherein introducing error is maximum.
Claims (9)
1. a minimum connection point type multichannel scanning means, it is characterized in that: it comprises main channel terminal I, subchannel terminal II, the main scanning switch copper sheet be connected with main channel terminal I, main scanning switch copper sheet is provided with multiple contact point I, subchannel terminal II is fixedly connected with and has point of contact II, contact point I is fixedly connected with main scanning switch copper sheet, contact point I can vertically upper and lower displacement, hold-down devices is provided with above main scanning switch copper sheet, hold-down devices can press down contact point I, and makes it to be connected with contact point II close contact.
2. minimum connection point type multichannel scanning means according to claim 1, is characterized in that: contact point I and main scanning switch copper sheet are that integral type is connected, and contact point II and subchannel terminal II are also for integral type is connected.
3. minimum connection point type multichannel scanning means according to claim 1, it is characterized in that: described hold-down devices is the slide block moved horizontally driven by stepper motors, stepper motor output shaft is connected with leading screw, leading screw is other is arranged with slide bar in parallel, slide block is nested with on slide bar and leading screw, stepper motor output shaft is connected with leading screw by shaft coupling, and driven by motor slide block moves horizontally along leading screw, and slide block can make contact point I to bottom offset.
4. minimum connection point type multichannel scanning means according to claim 1, it is characterized in that: described main scanning switch copper sheet is copper coin, copper coin is provided with the shell fragment corresponding with subchannel terminal II number and position, shell fragment and copper coin are that integral type is connected, and on copper coin, contact point I is fixed on shell fragment end.
5. minimum connection point type multichannel scanning means according to claim 4, it is characterized in that: be provided with space between shell fragment and copper coin, shell fragment is L shape, and only one end is connected with copper coin integral type.
6. minimum connection point type multichannel scanning means according to claim 4, it is characterized in that: main scanning switch copper sheet is provided with the same number of insulation projection with contact point I, it is arranged on contact point I place, specifically be arranged in the middle part of shell fragment or directly over contact point I, specifically be arranged in the middle part of shell fragment, slide block lower end can with bump contact squeeze flow, and drive and press down contact point I and contact with contact point II and connect.
7. minimum connection point type multichannel scanning means according to claim 6, it is characterized in that: slide block lower end is provided with projection, protruding and projection edge is inclined-plane or cambered surface, and the projection of slide block lower end is strip, and its length and width degree can the perpendicular subchannel terminal II arranged of complete covering one.
8. minimum connection point type multichannel scanning means according to claim 1, is characterized in that: described subchannel terminal II is designed to integral structure with contact point II.
9. the multi-channel scan method based on above-mentioned scanning means, it is characterized in that: it comprises the following steps program: main channel terminal I is connected with electric logging equipment, all subchannel terminals II are connected with equipment under test, slide block is driven to move to above a certain subchannel terminal II by control step motor, and slide block is connected with the bump contact on main scanning switch copper sheet, press down contact point I to make it and contact point II compact siro spinning technology, complete main channel terminal I to be connected with subchannel terminal II, after current subchannel has been tested, control step motor action, slide block is made to move to above another subchannel terminal II, pressing down contact point II makes main channel terminal I complete the shortest connection with this subchannel terminal II, the rest may be inferred, complete the sweep test of all subchannel terminals II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610001918.7A CN105470011B (en) | 2016-01-05 | 2016-01-05 | Minimum connection point type multichannel scanning means and multi-channel scan method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610001918.7A CN105470011B (en) | 2016-01-05 | 2016-01-05 | Minimum connection point type multichannel scanning means and multi-channel scan method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105470011A true CN105470011A (en) | 2016-04-06 |
| CN105470011B CN105470011B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610001918.7A Active CN105470011B (en) | 2016-01-05 | 2016-01-05 | Minimum connection point type multichannel scanning means and multi-channel scan method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585393Y (en) * | 2002-11-08 | 2003-11-05 | 李鸿林 | High-power temp. control device |
| CN104465226A (en) * | 2014-12-24 | 2015-03-25 | 中国计量学院 | Low-heat potential terminal connecting mechanism for diverter switch and formed diverter switch |
| CN105203633A (en) * | 2015-10-26 | 2015-12-30 | 南昌航空大学 | Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing |
| CN205542451U (en) * | 2016-01-05 | 2016-08-31 | 泰安磐然测控科技有限公司 | Connect point type multichannel scanning device |
-
2016
- 2016-01-05 CN CN201610001918.7A patent/CN105470011B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585393Y (en) * | 2002-11-08 | 2003-11-05 | 李鸿林 | High-power temp. control device |
| CN104465226A (en) * | 2014-12-24 | 2015-03-25 | 中国计量学院 | Low-heat potential terminal connecting mechanism for diverter switch and formed diverter switch |
| CN105203633A (en) * | 2015-10-26 | 2015-12-30 | 南昌航空大学 | Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing |
| CN205542451U (en) * | 2016-01-05 | 2016-08-31 | 泰安磐然测控科技有限公司 | Connect point type multichannel scanning device |
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| Publication number | Publication date |
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| CN105470011B (en) | 2018-08-17 |
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