TWI426419B - Track detecting device and track detecting method using same - Google Patents

Description

Trajectory detecting device and detecting method

The present invention relates to the field of trajectory detection, and in particular to a trajectory detecting device and a detecting method.

At present, portable electronic devices often use a light-blocking inductive trajectory detecting device to implement trajectory detection.

Conventionally, the light intercepting inductive trajectory detecting device comprises a trackball, two rotating shafts on two sides perpendicular to each other of the trackball, two sleeves respectively sleeved on one end of the rotating shaft, and two sleeves respectively set on the rotating shaft An encoding component on one end and two "concave" shaped photointerrupters that receive the encoding component. The two sides of the trackball perpendicular to each other abut against the sleeve. The coding component is similar to a blade with many occlusion designs. When the trackball rotates to drive the sleeve to rotate to rotate the shaft, the code assembly also rotates with the rotation of the shaft to block or transmit light signals between the two sides of the photointerrupter. At this time, the photointerrupter is launched. And receiving the optical signal to determine the displacement amount and direction of the trackball rolling.

However, the above-described light-blocking inductive trajectory detecting device requires a complicated transmission mechanism and cannot be miniaturized.

In view of the above, it is necessary to provide a miniaturized trajectory detecting device and detecting method.

A track detecting device includes an insulating spherical shell having an inner wall, a plurality of electrostatic induction units embedded in the insulating spherical shell, a charged pellet adsorbed to the inner wall and capable of rolling relative to the inner wall, and a processor. The plurality of electrostatic induction units are dispersed in the insulating spherical shell. The charged ball is used to roll on the inner wall to cause electrostatic induction of the rolling electrostatic induction unit to generate an electrical signal. The processor is electrically connected to the plurality of electrostatic induction units, and calculates a motion trajectory of the charged ball relative to the insulating spherical shell according to the electrical signal generated by the plurality of electrostatic induction units.

A trajectory detecting method for a trajectory detecting device as described above, comprising the steps of: scanning the respective electrostatic induction units while the charged ball is moved relative to the insulating ball and acquiring an electrostatic induction unit that generates a micro current. The position data of the electrostatic induction unit that generates the micro current is indexed from the position data corresponding to the position of each electrostatic induction unit. Calculating the motion trajectory of the charged ball relative to the insulating spherical shell according to the indexed complex position data.

Compared with the prior art, the trajectory detecting device and the trajectory detecting method provided by the present invention use the processor to continuously scan each electrostatic induction unit and acquire an electrostatic induction unit that generates a micro current, and index the position data of the electrostatic induction unit that generates the micro current, according to the index. The complex position data calculates the trajectory of the charged ball relative to the insulating spherical shell, avoiding the complicated transmission mechanism and achieving the miniaturization feature.

200‧‧‧Track detection device

210‧‧‧Insulated spherical shell

210a‧‧‧Upper half shell

210b‧‧‧ lower half shell

211‧‧‧ inner wall insulation

212‧‧‧ inner wall

213‧‧‧Intermediate insulation

214‧‧‧ outer wall

215‧‧‧ outer wall insulation

216‧‧‧ warp

218‧‧‧ weft

220‧‧‧Static induction unit

222‧‧‧First electrode plate

224‧‧‧Second electrode plate

226‧‧‧ wire

230‧‧‧Powered ball

240‧‧‧ processor

242‧‧‧ scan module

243‧‧‧Memory Module

244‧‧‧ index module

246‧‧‧Track forming module

248‧‧‧Control Module

1 is a perspective view of a trajectory detecting device according to a preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view taken along line II-II of Fig. 1.

Figure 3 is an enlarged view of the portion III in Figure 2.

4 is a functional block diagram of a processor of the trajectory detecting device of FIG. 1.

FIG. 5 is a flow chart of a trajectory detecting method according to a preferred embodiment of the present invention.

The invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 and FIG. 2 together, the trajectory detecting device 200 of the preferred embodiment of the present invention includes an insulating spherical shell 210, a plurality of electrostatic sensing units 220, a charged ball 230, and a processor 240. The plurality of electrostatic induction units 220 are embedded in the insulating spherical shell 210. The charged ball 230 is housed in the insulating spherical shell 210 and adsorbed to the insulating spherical shell 210. The processor 240 is electrically connected to the plurality of static induction units 220.

The insulating spherical shell 210 is made of an insulating material, such as plastic, and includes an inner wall 212 and an outer wall 214, and has a plurality of warp threads 216 and a plurality of weft threads 218 equally spaced. In the present embodiment, the insulating ball housing 210 includes an upper housing half 210a and a lower housing half 210b. After the upper housing 210a and the lower housing half 210b are respectively formed, they are assembled by structural matching or bonding. Insulating the spherical shell 210.

Each of the static induction units 220 is disposed at an intersection of a warp 216 and a weft 218. Referring to FIG. 3, the static induction unit 220 includes a first electrode plate 222, a second electrode plate 224, and a first electrode plate 222 and a second electrode. A wire 226 electrically connected to the plate 224. The first electrode plate 222 and the second electrode plate 224 are embedded in the insulating spherical shell 210 at a radial interval along the insulating spherical shell. The first electrode plate 222 is adjacent to the inner wall 212, the second electrode plate 224 is adjacent to the outer wall 214, and the first electrode plate is The 222 and the second electrode plate 224 are curved panels that are parallel to the inner wall 212 and the outer wall 214. As such, the insulating ball housing 210 is formed with the inner wall insulating layer 211, the intermediate insulating layer 213, and the outer wall insulating layer 215 at the place where the electrostatic induction unit 220 is disposed. Specifically, the upper housing half 210a and the lower housing half 210b can be formed by in-mold injection molding, so that the electrostatic induction unit 220 can be embedded in the insulating spherical shell 210 during molding.

The charged ball 230 may be made of metal that is attracted to the inner wall 212. In particular, the insulating spherical shell 210 may be coated with an electrically insulating magnetic material to create a weak magnetic field. The weak magnetic field force can adsorb the charged ball 230 made of metal on the inner wall 214, and allows the charged ball 230 to be attached to the inner wall 214 to roll as the insulating spherical shell 210 moves.

Please refer to FIG. 3 , which is a state diagram of the position where the charged ball 230 is moved to the inner wall 214 where the electrostatic induction unit 220 is disposed. Due to electrostatic induction, the charged ball 230 causes the first electrode plate 222 and the second electrode plate 224 to form a potential difference to generate a microcurrent flowing through the wire 226. In order to improve the detection accuracy, preferably, the size (diameter) of the charged ball 230 should match the size of the first electrode plate 222 and the second electrode plate 224, if the same or slightly smaller. More preferably, the first electrode plate 222 and the second electrode plate 224 should match the shape of the charged ball 230, and adopt an arc shape.

Referring to FIG. 3 and FIG. 4 , the processor 240 includes a scanning module 242 , a storage module 243 , an index module 244 , a track forming module 246 , and a control module 248 . Scan module 242 and the guide of each electrostatic induction unit The line 226 is electrically connected to scan each of the electrostatic induction units 220 and acquire an electrostatic induction unit 220 that generates a micro current. The storage module 243 is configured to store location data of the location of each electrostatic induction unit 220. The index module 244 is used to index the position data of the electrostatic induction unit that generates the micro current. The trajectory forming module 246 is configured to calculate the trajectory of the charged ball 230 relative to the insulating spherical shell 210 according to the indexed complex position data during the movement of the charged ball 230 relative to the insulating spherical shell 210. The control module 248 is configured to output a control signal according to the motion track.

Referring to FIG. 5, the trajectory detecting method of the trajectory detecting device 200 includes:

S100: The scanning module 242 scans each electrostatic induction unit 220 and acquires an electrostatic induction unit 220 that generates a micro current.

S200: The index module 244 indexes the location data of the electrostatic induction unit 220 that generates the micro current from the location data corresponding to the location of each of the electrostatic induction units 220.

S300: The trajectory forming module 246 calculates a motion trajectory of the charged ball 230 relative to the insulating spherical shell 210 according to the indexed complex position data.

S400: The control module 248 outputs a control signal according to the motion track.

The trajectory detecting device 200 and the trajectory detecting method continuously scan each electrostatic sensing unit 220 by the processor 240 and acquire the electrostatic induction unit 220 that generates the micro current, index the position data of the electrostatic induction unit 220 that generates the micro current, and calculate the charging small according to the obtained complex position data. The trajectory of the ball 230 relative to the insulating spherical shell 210 avoids complicated transmission mechanisms and thus achieves miniaturization.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application in this case. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

210‧‧‧Insulated spherical shell

210b‧‧‧ lower half shell

214‧‧‧ outer wall

230‧‧‧Powered ball

210a‧‧‧Upper half shell

212‧‧‧ inner wall

220‧‧‧Static induction unit

240‧‧‧ processor

Claims (9)

A trajectory detecting device is improved in that the trajectory detecting device comprises: an insulating spherical shell, the insulating spherical shell comprises an inner wall; a plurality of electrostatic induction units embedded in the insulating spherical shell, the plurality of electrostatic sensing units being dispersed in the insulating spherical shell a charged ball that is adsorbed on the inner wall and can roll relative to the inner wall, the charged ball is used to roll on the inner wall to cause electrostatic induction of the rolling electrostatic induction unit to generate an electrical signal; a processor, The method is electrically connected to the plurality of electrostatic induction units, and calculates a motion trajectory of the charged ball relative to the insulating spherical shell according to the electrical signal generated by the plurality of electrostatic induction units. The trajectory detecting device of claim 1, wherein the insulating spherical shell is provided with a plurality of warp and weft, and the plurality of electrostatic sensing units are disposed at a crossing of the warp and the weft of the insulating spherical shell. The trajectory detecting device of claim 1, wherein the electrostatic induction unit comprises a first electrode plate, a second electrode plate and a first electrode plate electrically connected to the second electrode plate. The first electrode plate and the second electrode plate are buried in the insulating spherical shell radially along the insulating spherical shell. The trajectory detecting device of claim 3, wherein the insulating spherical shell further comprises an outer wall, the first electrode plate is adjacent to the inner wall, the second electrode plate is adjacent to the outer wall, and the first electrode plate And the second electrode plate is used internally Curved panels with parallel walls and outer walls. The trajectory detecting device of claim 3, wherein the size of the first electrode plate and the second electrode plate match the diameter of the charged ball. The trajectory detecting device according to claim 1, wherein the charged ball is made of a metal material. The trajectory detecting device according to claim 3, wherein the electric signal is a micro current flowing through the wire caused by the charged ball forming a potential difference between the first electrode plate and the second electrode plate. The trajectory detecting device of claim 1, wherein the processor comprises: a scanning module electrically connected to the wires of each electrostatic induction unit to scan each electrostatic induction unit and obtain an electrostatic induction unit that generates a micro current; a storage module for storing location data of each electrostatic induction unit; an index module for indexing position data of the electrostatic induction unit that generates the micro current; and a track formation module for the small charging During the movement of the ball relative to the insulating spherical shell, the moving track of the charged ball relative to the insulating spherical shell is calculated according to the complex position data of the index; and a control module is configured to output the control signal according to the moving track. A trajectory detecting method is applied to a trajectory detecting device, the trajectory detecting device comprising an insulating spherical shell, a plurality of electrostatic induction units buried in the insulating spherical shell, and a charging device adsorbed on the inner wall and capable of rolling relative to the inner wall Small ball, which includes: Scanning each electrostatic induction unit to obtain an electrostatic induction unit that generates a micro current; indexing the position data of the electrostatic induction unit that generates the micro current from the position data corresponding to the position of each electrostatic induction unit; and calculating the relative position of the charged small ball according to the indexed multiple position data The trajectory of the insulating spherical shell.