Eye movement tracking and electroencephalogram monitoring integrated lie detection device

Abstract

The invention relates to the technical field of lie detection devices, and discloses an eye movement tracking and electroencephalogram monitoring integrated lie detection device which solves the problem that at present, the whole lie detection device is inconvenient to store and transfer, the eye movement tracking and electroencephalogram monitoring integrated lie detection device comprises a base, a plurality of supporting columns are fixedly connected to the bottom of the base at equal angles, and universal wheels are installed at the bottom ends of the supporting columns; a lifting mechanism is arranged at the top of the base, a turnover mechanism and a lie detection mechanism are arranged on the lifting mechanism, the lifting mechanism comprises a vertical frame fixed to the top of the base, an L-shaped plate is movably sleeved with the vertical frame, a mounting groove is formed in the L-shaped plate, an inner shaft is fixedly connected into the mounting groove, a transverse plate is fixedly sleeved with the middle of the outer side of the inner shaft, and the transverse plate is perpendicular to the vertical frame. An electric push rod I is fixedly mounted in the vertical frame; according to the lie detection device, when the L-shaped plate descends, the two rubber blocks can ascend to be separated from the ground, and therefore the whole lie detection device can be conveniently transferred through the universal wheels.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polygraph devices, and particularly relates to an eye movement tracking and electroencephalogram monitoring integrated polygraph device. BACKGROUND

[0002] The eye movement tracking and electroencephalogram monitoring integrated polygraph device is a polygraph device integrating eye movement tracking and electroencephalogram monitoring technologies, which can capture the pupil changes, blink frequency and visual line trajectory of a person to be tested in real time through a special camera, collect the brain electrical activity signals through electrode pieces attached to the forehead, temples and other regions of the head, and analyze the signals synchronously through an algorithm to compare the signal abnormality difference when the person to be tested answers key questions and neutral questions, so as to determine whether the person to be tested has a lie behavior. The device can effectively improve the accuracy of the polygraph result and reduce the misjudgment rate of the polygraph result of a single technology.

[0003] The eye movement tracking and electroencephalogram monitoring integrated polygraph device in the prior art has obvious portability defects in the structural design. The core problem is that the device needs to rely on a special support with a large volume to complete the installation and support. Such a support is mostly a rigid frame structure. In order to ensure the installation stability, the overall size and weight of the support are difficult to reduce. In addition, the support and each hardware module are connected in a fixed manner, and the components cannot be disassembled and folded. This design causes the device to occupy a large space, so that the device cannot be simply stored, and the support needs to be carried with special tools when being transferred, which is complicated and time-consuming. SUMMARY

[0004] In view of the above problems, the eye movement tracking and electroencephalogram monitoring integrated polygraph device is provided to effectively solve the problem that the entire polygraph device cannot be stored and transferred.

[0005] To achieve the above object, the application provides the following technical scheme: an eye movement tracking and electroencephalogram monitoring integrated polygraph device, comprising a base, a plurality of support columns are fixedly connected to the bottom of the base at equal angles, a universal wheel is installed at the bottom end of each support column, a lifting mechanism is arranged on the top of the base, a turnover mechanism and a polygraph mechanism are arranged on the lifting mechanism. The lifting mechanism comprises a vertical frame fixed to the top of the base, an L-shaped plate movably sleeved in the vertical frame, an installation groove is arranged on the L-shaped plate, an inner shaft is fixedly connected in the installation groove, a horizontal plate is fixedly sleeved on the outer middle part of the inner shaft, the horizontal plate is perpendicular to the vertical frame, an electric push rod one is fixedly installed in the vertical frame, and the bottom of the L-shaped plate is fixed to the output end of the electric push rod one.

[0006] Preferably, two L-shaped round rods one are symmetrically and fixedly connected between the outer side of the vertical frame and the top of the base, a U-shaped plate is movably sleeved between the two L-shaped round rods one, two springs are symmetrically and fixedly connected between the U-shaped plate and the base, the two springs are respectively sleeved on the outer sides of the two L-shaped round rods one, the bottom of the U-shaped plate is symmetrically and fixedly connected with two stand columns, and the bottom ends of the two stand columns penetrate through the base and are fixedly connected with rubber blocks.

[0007] Preferably, two L-shaped round rods two are symmetrically and fixedly connected between the outer side of the vertical frame and the top of the base, a lifting plate is movably sleeved between the two L-shaped round rods two, the U-shaped plate is located on the outer side of the lifting plate, a push plate is fixedly connected to the side, away from the vertical frame, of the lifting plate, and the push plate is located below the U-shaped plate.

[0008] Preferably, two mounting blocks are symmetrically and fixedly connected to the side, close to the lifting plate, of the vertical frame, a connecting shaft is rotatably connected between the two mounting blocks, a gear is fixedly installed on the outer side of the connecting shaft, a second toothed plate is fixedly connected to the side, close to the gear, of the lifting plate, and the second toothed plate is engaged with the gear.

[0009] Preferably, a second side groove is arranged on the side, away from the side groove two, of the vertical frame, a first toothed plate is fixedly connected to the outer side of the L-shaped plate, the first toothed plate is located on the inner side of the second side groove, the gear is located between the first toothed plate and the second toothed plate, and the first toothed plate is engaged with the gear.

[0010] Preferably, the turnover mechanism comprises a side plate fixed to the outer side of the L-shaped plate, a first side groove is arranged on the side, away from the second side groove, of the vertical frame, the side plate is slidably connected with the first side groove, a guide rod is fixedly connected between the side plate and the L-shaped plate, a guide block is movably sleeved on the outer side of the guide rod, a movable rod is rotatably connected to the outer side of the guide block, and the top end of the movable rod is rotatably connected to the bottom of the horizontal plate.

[0011] Preferably, an electric push rod two is fixedly installed on the L-shaped plate, and the top of the guide block is fixed to the output end of the electric push rod two.

[0012] Preferably, the lie-to-truth mechanism comprises a translation plate located on the horizontal plate, a positioning disc is fixedly connected to the bottom of the horizontal plate, a flexible electrode sheet is fixedly connected to the side, close to the positioning disc, of the translation plate, a containing groove is arranged on the side, close to the positioning disc, of the translation plate, and a binocular camera is installed in the containing groove.

[0013] Preferably, a through groove is arranged on the horizontal plate, a lead screw is rotatably connected in the through groove, a hand wheel is fixedly connected to one end of the lead screw, a nut is threadedly sleeved on the outer side of the lead screw, the translation plate is fixed to the bottom of the nut, a sliding groove is arranged on the bottom of the horizontal plate, and the translation plate is slidably connected with the sliding groove.

[0014] Compared with the prior art, the polyurethane foam has the following beneficial effects: 1. The present application can realize the lifting of the L-shaped plate by starting the electric push rod, which is convenient for adjusting the height of the horizontal plate according to the height of the user, and can make the L-shaped plate descend and rotate the horizontal plate to fold it, so as to facilitate the storage of the entire polygraph device, and when the L-shaped plate descends, the two rubber blocks can be lifted to separate from the ground, so as to facilitate the transfer of the entire polygraph device through the universal wheel.

[0015] 2. The present application can drive the guide block to slide downward along the guide rod by starting the electric push rod II, and then drive the horizontal plate to overturn downward through the movable rod, so as to facilitate the folding and storage of the horizontal plate.

[0016] 3. The present application can position the head of the user by setting the positioning disc, and drive the translation plate to slide along the sliding groove by rotating the hand wheel, so as to facilitate the adhesion of the flexible electrode sheet to the forehead of the user, and can make the binocular camera align with the eyes, so as to facilitate the polygraph work. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings are used to provide further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation of the present application.

[0018] In the drawings: Figure 1 It is the structure schematic view of the polygraph device integrating eye movement tracking and electroencephalogram monitoring of the present application. Figure 2 It is the structure schematic view of the lifting mechanism of the present application. Figure 3 It is the structure schematic view of the vertical frame of the present application. Figure 4 It is the structure schematic view of the lifting plate of the present application. Figure 5 It is the structure schematic view of the overturning mechanism of the present application. Figure 6 It is the structure schematic view of the polygraph mechanism of the present application. Figure 7 It is the structure schematic view of the translation plate of the present application.

[0019] In the diagram: 1. Base; 2. Lifting mechanism; 201. Frame; 202. U-shaped plate; 203. Column; 204. Rubber block; 205. Electric push rod one; 206. Side groove one; 207. Spring; 208. L-shaped round rod one; 209. Inner shaft; 2010. Horizontal plate; 2011. Mounting groove; 2012. L-shaped plate; 2013. L-shaped round rod two; 2014. Lifting plate; 2015. Push plate; 2016. Side groove two; 2017. Gear plate one; 2018. Gear; 2019 9. Connecting shaft; 2020. Mounting block; 2021. Toothed plate II; 3. Tilting mechanism; 301. Side plate; 302. Guide rod; 303. Movable rod; 304. Electric push rod II; 305. Guide block; 4. Lie detection mechanism; 401. Translation plate; 402. Binocular camera; 403. Receiving groove; 404. Flexible electrode sheet; 405. Positioning plate; 406. Through groove; 407. Slide groove; 408. Handwheel; 409. Lead screw; 4010. Nut; 5. Support column; 6. Universal wheel. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Example 1, by Figures 1-7 The present invention relates to an integrated lie detection device combining eye tracking and electroencephalogram (EEG) monitoring, comprising a base 1, with multiple support columns 5 fixedly connected at equal angles to the bottom of the base 1, each support column 5 having a caster wheel 6 installed at its bottom end, and a lifting mechanism 2 provided on the top of the base 1, the lifting mechanism 2 having a flipping mechanism 3 and a lie detection mechanism 4.

[0022] According to the second embodiment, based on the first embodiment, the lifting mechanism 2 comprises a vertical frame 201 fixed on the top of the base 1, an L-shaped plate 2012 movably sleeved in the vertical frame 201, an installation groove 2011 arranged on the L-shaped plate 2012, an inner shaft 209 fixedly connected in the installation groove 2011, a horizontal plate 2010 fixedly sleeved on the outer middle part of the inner shaft 209, the horizontal plate 2010 being perpendicular to the vertical frame 201, an electric push rod one 205 fixedly arranged in the vertical frame 201, the bottom of the L-shaped plate 2012 being fixed on the output end of the electric push rod one 205, two L-shaped round rods one 208 fixedly and symmetrically connected between the outer side of the vertical frame 201 and the top of the base 1, a U-shaped plate 202 movably sleeved between the two L-shaped round rods one 208, two springs 207 fixedly and symmetrically connected between the U-shaped plate 202 and the base 1, the two springs 207 being sleeved on the outer sides of the two L-shaped round rods one 208 respectively, two vertical columns 203 fixedly and symmetrically connected on the bottom of the U-shaped plate 202, rubber blocks 204 fixedly connected on the bottom ends of the two vertical columns 203 and penetrating through the base 1, two L-shaped round rods two 2013 fixedly and symmetrically connected between the outer side of the vertical frame 201 and the top of the base 1, a lifting plate 2014 movably sleeved between the two L-shaped round rods two 2013, the U-shaped plate 202 being located on the outer side of the lifting plate 2014, a push plate 2015 fixedly connected on the side of the lifting plate 2014 away from the vertical frame 201, the push plate 2015 being located below the U-shaped plate 202, two mounting blocks 2020 fixedly and symmetrically connected on the side of the vertical frame 201 close to the lifting plate 2014, a connecting shaft 2019 rotatably connected between the two mounting blocks 2020, a gear 2018 fixedly arranged on the outer side of the connecting shaft 2019, a gear plate two 2021 fixedly connected on the side of the lifting plate 2014 close to the gear 2018, the gear plate two 2021 being engaged with the gear 2018, a side groove two 2016 arranged on the side of the vertical frame 201 close to the lifting plate 2014, a gear plate one 2017 fixedly connected on the outer side of the L-shaped plate 2012, the gear plate one 2017 being located on the inner side of the side groove two 2016, the gear 2018 being located between the gear plate one 2017 and the gear plate two 2021, and the gear plate one 2017 being engaged with the gear 2018; When the electric push rod one 205 is started, the L-shaped plate 2012 is driven to move longitudinally, the horizontal plate 2010 is lifted, the height of the horizontal plate 2010 is adjusted according to the height of the user, the L-shaped plate 2012 can be lowered, the horizontal plate 2010 can be rotated downward to be parallel to the vertical frame 201 due to the rotation connection of the inner shaft 209 in the installation groove 2011, and the whole lie detector device can be stored; When the L-shaped plate 2012 is lowered, the toothed plate 2017 is driven to move downward in the side slot 2016, and since the toothed plate 2017 is engaged with the gear 2018 and the gear 2018 is engaged with the toothed plate 2021, the lifting plate 2014 is driven to slide upward along the two L-shaped round rods 2013, and the push plate 2015 is driven to rise to push the U-shaped plate 202, so that the U-shaped plate 202 slides upward along the two L-shaped round rods 201, at this time, the two springs 207 are stretched, and the two rubber blocks 204 are driven to rise by the two vertical columns 203 respectively, so that the two rubber blocks 204 are separated from the ground, at this time, the whole polygraph device can be shifted by the universal wheel 6, when the L-shaped plate 2012 is raised, the push plate 2015 is lowered to release the limiting effect on the U-shaped plate 202, at this time, the two springs 207 are reset to drive the U-shaped plate 202 to slide downward along the two L-shaped round rods 201, so that the two rubber blocks 204 are lowered to abut against the ground, realizing stable support for the whole device, finally ensuring the stability of the whole polygraph device during use.

[0023] In example three, on the basis of example one, the turnover mechanism 3 comprises a side plate 301 fixed to the outer side of the L-shaped plate 2012, the side slot 2016 away from the side of the vertical frame 201 is provided with a side slot 206, the side plate 301 and the side slot 206 are slidingly connected, the side plate 301 and the L-shaped plate 2012 are fixedly connected with a guide rod 302, the outer side of the guide rod 302 movably sleeved with a guide block 305, the outer side of the guide block 305 rotatably connected with a movable rod 303, the top end of the movable rod 303 rotatably connected to the bottom of the horizontal plate 2010, the L-shaped plate 2012 is fixedly installed with an electric push rod 304, the top of the guide block 305 is fixed to the output end of the electric push rod 304; First, start the electric push rod 304, drive the guide block 305 to slide downward along the guide rod 302, then drive the horizontal plate 2010 to turn over downward through the movable rod 303, so that the horizontal plate 2010 and the vertical frame 201 are parallel to each other, realizing the folding storage of the horizontal plate 2010.

[0024] In example four, on the basis of example one, the polygraph mechanism 4 comprises a translation plate 401 located on the horizontal plate 2010, the bottom of the horizontal plate 2010 is fixedly connected with a positioning disc 405, the side close to the positioning disc 405 of the translation plate 401 is fixedly connected with a flexible electrode sheet 404, the side close to the positioning disc 405 of the translation plate 401 is provided with a containing groove 403, the inside of the containing groove 403 is installed with a binocular camera 402, the horizontal plate 2010 is provided with a through groove 406, the through groove 406 is rotatably connected with a lead screw 409, one end of the lead screw 409 is fixedly connected with a hand wheel 408, the outer side of the lead screw 409 is threadedly sleeved with a nut 4010, the translation plate 401 is fixed to the bottom of the nut 4010, the bottom of the horizontal plate 2010 is provided with a sliding groove 407, the translation plate 401 and the sliding groove 407 are slidingly connected; First, the positioning disc 405 is attached to the user's head, then rotate the hand wheel 408, drive the lead screw 409 rotation, and drive the nut 4010 in the slot 406 sliding, while the translation plate 401 along the sliding groove 407 sliding, so that the flexible electrode sheet 404 horizontal movement until attached to the user's forehead, while the binocular camera 402 and the eyes, the first let the measured answer irrelevant questions, collection and establish its say the truth when the eye movement baseline and EEG baseline, the formal question, binocular camera 402 real-time capture the measured answer key questions when the pupil change, blink frequency, eye direction and other eye movement signals, flexible electrode sheet 404 synchronous acquisition of weak brain electrical signals, two kinds of signals by the unified clock chip code realization millisecond level time synchronization, again by the pre-processing module filter external light, muscle tremor and other interference, core analysis module will key questions under the eye movement, EEG data and baseline data comparison, when the eye movement appears pupil abnormal enlargement, blink frequency sudden change, eye deliberately avoid characteristics, and EEG theta wave, gamma wave synchronous appear significant peak abnormality, that is determined to be suspected lying, finally through the display output judgment conclusion and specific abnormal data.

Claims

1. A lie detection device integrating eye tracking and electroencephalogram (EEG) monitoring, comprising a base (1), characterized in that: The base (1) has multiple support columns (5) fixedly connected at equal angles at the bottom. Each support column (5) is equipped with a caster wheel (6) at the bottom. The base (1) has a lifting mechanism (2) at the top. The lifting mechanism (2) is equipped with a flipping mechanism (3) and a lie detector (4). The lifting mechanism (2) includes a vertical frame (201) fixed to the top of the base (1). An L-shaped plate (2012) is movably sleeved inside the vertical frame (201). An mounting groove (2011) is provided on the L-shaped plate (2012). An inner shaft (209) is fixedly connected inside the mounting groove (2011). A horizontal plate (2010) is fixedly sleeved on the middle of the outer side of the inner shaft (209). The horizontal plate (2010) is perpendicular to the vertical frame (201). An electric push rod (205) is fixedly installed inside the vertical frame (201). The bottom of the L-shaped plate (2012) is fixed to the output end of the electric push rod (205).

2. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: Two L-shaped round rods (208) are symmetrically fixedly connected between the outer side of the frame (201) and the top of the base (1). A U-shaped plate (202) is movably sleeved between the two L-shaped round rods (208). Two springs (207) are symmetrically fixedly connected between the U-shaped plate (202) and the base (1). The two springs (207) are respectively sleeved on the outer side of the two L-shaped round rods (208). Two columns (203) are symmetrically fixedly connected to the bottom of the U-shaped plate (202). The bottom ends of the two columns (203) penetrate the base (1) and are fixedly connected with rubber blocks (204).

3. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: Two L-shaped round rods (2013) are symmetrically fixedly connected between the outer side of the frame (201) and the top of the base (1). A lifting plate (2014) is movably sleeved between the two L-shaped round rods (2013). A U-shaped plate (202) is located outside the lifting plate (2014). A push plate (2015) is fixedly connected to the side of the lifting plate (2014) away from the frame (201). The push plate (2015) is located below the U-shaped plate (202).

4. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: Two mounting blocks (2020) are symmetrically fixedly connected to the side of the frame (201) near the lifting plate (2014). A connecting shaft (2019) is rotatably connected between the two mounting blocks (2020). A gear (2018) is fixedly installed on the outside of the connecting shaft (2019). A toothed plate (2021) is fixedly connected to the side of the lifting plate (2014) near the gear (2018). The toothed plate (2021) meshes with the gear (2018).

5. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: The upright frame (201) has a side groove two (2016) on the side near the lifting plate (2014). A toothed plate one (2017) is fixedly connected to the outer side of the L-shaped plate (2012). The toothed plate one (2017) is located inside the side groove two (2016). The gear (2018) is located between the toothed plate one (2017) and the toothed plate two (2021), and the toothed plate one (2017) meshes with the gear (2018).

6. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: The flipping mechanism (3) includes a side plate (301) fixed to the outside of the L-shaped plate (2012). The side of the upright frame (201) away from the side groove two (2016) is provided with a side groove one (206). The side plate (301) is slidably connected to the side groove one (206). A guide rod (302) is fixedly connected between the side plate (301) and the L-shaped plate (2012). A guide block (305) is movably sleeved on the outside of the guide rod (302). A movable rod (303) is rotatably connected on the outside of the guide block (305). The top of the movable rod (303) is rotatably connected to the bottom of the horizontal plate (2010).

7. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: An electric push rod two (304) is fixedly installed on the L-shaped plate (2012), and the top of the guide block (305) is fixed to the output end of the electric push rod two (304).

8. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: The lie detection mechanism (4) includes a translation plate (401) located on a horizontal plate (2010). A positioning disk (405) is fixedly connected to the bottom of the horizontal plate (2010). A flexible electrode sheet (404) is fixedly connected to the side of the translation plate (401) near the positioning disk (405). A receiving groove (403) is provided on the side of the translation plate (401) near the positioning disk (405). A binocular camera (402) is installed inside the receiving groove (403).

9. The integrated eye-tracking and EEG monitoring lie detection device according to claim 1, characterized in that: The horizontal plate (2010) is provided with a through groove (406), and a lead screw (409) is rotatably connected in the through groove (406). A handwheel (408) is fixedly connected to one end of the lead screw (409). A nut (4010) is threaded onto the outer side of the lead screw (409). A translation plate (401) is fixed to the bottom of the nut (4010). A sliding groove (407) is provided at the bottom of the horizontal plate (2010). The translation plate (401) is slidably connected to the sliding groove (407).

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