Inertial sensing device

• US 10,408,620 B2
• Filed: 01/31/2015
• Issued: 09/10/2019
• Est. Priority Date: 09/02/2014
• Status: Active Grant

• Current Assignee: Changzhou Spidersens Intelligent Technology Ltd.
• Original Assignee: Changzhou Spidersens Intelligent Technology Ltd.
• Inventors: Cao, Yuan
• Primary Examiner(s): Nolan, Peter D
• Application Number:
  US15/505,090
• Publication Number:
  US 20190154448A1
• Time in Patent Office: 1,683 Days
• CPC Class Codes: G01C 19/08 electrically driven G01C19/14 takes precedence
• CPC Class Codes: G01C 19/5712 the devices involving a micromechanical structure
• CPC Class Codes: G01C 21/166 Mechanical, construction or arrangement details of inertial navigation systems
• CPC Class Codes: G01C 21/188 for accumulated errors, e.g. by coupling inertial systems with absolute positioning systems
• CPC Class Codes: G01C 25/005 initial alignment, calibration or starting-up of inertial devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H05K 1/181 associated with surface mounted components

Abstract

An inertial sensing device comprising a circuit board provided with an inertial sensor. The inertial sensing device also comprises a base, a rotating plate and a power source assembly. The circuit board is mounted on the rotating plate, the power source assembly is mounted on the base, the rotating plate is drivingly connected to a power output shaft of the power source assembly. The circuit board rotates along with the rotating plate in a reciprocating or a continuous manner at a speed of 1 to 200 RPM. The inertial sensing device is combined with a monitored movable target under operating conditions, and transmits a collected signal to a personal navigation system to display an instantaneous geographic position of the target. The inertial sensing device is low in cost, small in size, and is capable of controlling the heading error within 1°/hour to increase the accuracy of indoor navigation systems.

Claims

1. An inertial sensing device comprising a circuit board (4) and an inertial sensor (4-3) provided on the circuit board (4), wherein the inertial sensing device further comprising:

a base (1), a rotating plate (3) and a power source assembly (DZ);

the circuit board (4) is mounted on the rotating plate (3), the power source assembly (DZ) is mounted on the base (1), the rotating plate (3) is drivingly connected to a power output shaft (6) of the power source assembly;

the circuit board (4) rotates along with the rotating plate (3) in a reciprocating manner or a continuous manner at a rotation speed of 1 to 200 RPM;

the inertial sensing device is combined with a monitored movable target under operating conditions, a signal collected by the inertial sensor (4-3) is transmitted to a personal navigation system to display an instantaneous geographic position of the monitored movable target wherein,

the circuit board (4) further comprises a first wireless power receiving module (4-11), a first wireless communication module (4-21), a first wireless power receiving coil (4-41), a first insulating sheet (4-51) and a first microprocessor (4-61);

the first wireless power receiving coil (4-41) is mounted on the circuit board (4) through the first insulating sheet (4-51) and is electrically connected to a corresponding connection terminal of the first wireless power receiving module (4-11);

the first wireless power receiving module (4-11), the first wireless communication module (4-21) and the inertial sensor (4-3) are electrically connected to corresponding connection terminals of the first microprocessor (4-61) respectively;

or,

the inertial sensing device further comprises a first frame (2-1) and a first slip ring (5-1);

the first frame (2-1) has an inverted L-shape with a lower portion fixed on the base (1) and a top portion mounted with the first slip ring (5-1);

wherein the power source assembly (DZ) comprises a second motor (8-2) and a second speed reducer (7-2) drivingly connected to the second motor (8-2), which are both mounted on the base (1);

the power output shaft (6) is a power output shaft of the second speed reducer (7-2) which is sleeved by the rotating plate (3);

a first rotor (5-1-1) of the first slip ring (5-1) is drivingly connected to the power output shaft of the second speed reducer (7-2);

or,

the inertial sensing device further comprises a second slip ring (5-2) which is mounted on the base (1);

a second rotor (5-2-1) of the second slip ring (5-2) is assembled to the rotating plate (3);

the power source assembly comprises a third motor (8-3), a third speed reducer (7-3) drivingly connected to the third motor (8-3) which are both mounted on the base (1), and a first driving gear (9-1);

the power output shaft (6) is a power output shaft of the third speed reducer (7-3) and is sleeved by the first driving gear (9-1);

the rotating plate (3) is a driven gear engaged with the first driving gear (9-1);

or,

the power source assembly (DZ) comprises a fourth motor (8-4), a fourth speed reducer (7-4) drivingly connected to the fourth motor (8-4) which are both mounted on the base (1), a first rotating shaft (6-1) and a second driving gear (9-2);

the power output shaft (6) is a power output shaft of the fourth speed reducer (7-4) which is sleeved by the second driving gear (9-2);

the rotating plate (3) is a driven gear engaged with the second driving gear (9-2);

the first rotating shaft (6-1) is assembled to the base (1), the rotating plate (3) is assembled to the first rotating shaft (6-1);

the circuit board (4) further comprises a second wireless power receiving module (4-12), a second wireless communication module (4-22), a second wireless power receiving coil (4-42), a second insulating sheet (4-52) and a second microprocessor (4-62);

the second wireless power receiving coil (4-42) is mounted on the circuit board (4) through the second insulating sheet (4-52) and is electrically connected to a corresponding connection terminal of the second wireless power receiving module (4-12);

the second wireless power receiving module (4-12), the second wireless communication module (4-22) and the inertial sensor (4-3) are electrically connected to corresponding connection terminals of the second microprocessor (4-62) respectively;

or,

the inertial sensing device further comprises a second frame (2-2) and a third slip ring (5-3);

wherein the second frame (2-2) has an inverted L-shape with a lower portion fixed on the base (1) and a top portion mounted with the third slip ring (5-3);

the power source assembly (DZ) comprises a fifth motor (8-5), a first positioning block (12-1), a third driving gear (9-3), a first internal gear (10-1) and a second rotating shaft (6-2);

the fifth motor (8-5) is mounted on the rotating plate (3);

the power output shaft (6) is a power output shaft of the fifth motor (8-5) which is assembled to the third driving gear (9-3) by passing through the rotating plate (3);

the third driving gear (9-3) is engaged with internal gear teeth of the first internal gear (10-1);

the first internal gear (10-1) and the first positioning block (12-1) are both fixed on the base (1), the first positioning block (12-1) is disposed inside the first internal gear (10-1);

one terminal of the second rotating shaft (6-2) passes through the first positioning block (12-1) to be assembled to the base (1), the rotating plate (3) and the circuit board (4) are arranged on an upper surface of the first positioning block (12-1) by receiving the second rotating shaft (6-2);

the other terminal of the second rotating shaft (6-2) is assembled to a third rotor (5-3-1) of the third slip ring (5-3);

or,

the power source assembly (DZ) comprises a sixth motor (8-6), a second positioning block (12-2), a fourth driving gear (9-4), a second internal gear (10-2) and a third rotating shaft (6-3);

the sixth motor (8-6) is mounted on the rotating plate (3);

the power output shaft (6) is a power output shaft of the sixth motor (8-6) which is assembled to the fourth driving gear (9-4) by passing through the rotating plate (3);

the fourth driving gear (9-4) is engaged with internal gear teeth of the second internal gear (10-2);

the second internal gear (10-2) and the second positioning block (12-2) are both fixed on the base (1), the second positioning block (12-2) is disposed inside the second internal gear (10-2);

one terminal of the third rotating shaft (6-3) passes through the second positioning block (12-2) to be assembled to the base (1), the rotating plate (3) and the circuit board (4) are arranged on an upper surface of the second positioning block (12-2) by receiving the third rotating shaft (6-3);

the circuit board (4) further comprises a third wireless power receiving module (4-13), a third wireless communication module (4-23), a third wireless power receiving coil (4-43), a third insulating sheet (4-53) and a third microprocessor (4-63);

the third wireless power receiving coil (4-43) is mounted on the circuit board (4) through the third insulating sheet (4-53) and is electrically connected to a corresponding connection terminal of the third wireless power receiving module (4-13);

the third wireless power receiving module (4-13), the third wireless communication module (4-23) and the inertial sensor (4-3) are electrically connected to corresponding connection terminals of the third microprocessor (4-63) respectively.