CN218416689U

CN218416689U - Electronic workcard circuit, electronic workcard and positioning system

Info

Publication number: CN218416689U
Application number: CN202222315611.8U
Authority: CN
Inventors: 张海涛
Original assignee: Guangzhou Chenchuang Technology Development Co ltd
Current assignee: Guangzhou Chenchuang Technology Development Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-01-31
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to a location application technical field, especially indicate an electron worker tablet circuit, electron worker tablet and a positioning system, electron worker tablet circuit is applied to in the electron worker tablet, electron worker tablet includes electron worker tablet main part, electron worker tablet main part is equipped with connecting portion, start button and power source; the electronic card circuit comprises: the Bluetooth module is used for sending and receiving information of the Bluetooth AOA base station. The utility model discloses can fix a position visitor more accurately, make things convenient for the receptionist to know the position that visitor located.

Description

Electronic workcard circuit, electronic workcard and positioning system

Technical Field

The utility model relates to a location application technology field indicates an electronics worker's tablet circuit, electronics worker's tablet and a positioning system especially.

Background

With the development of economy, the enterprise campus is also getting bigger and bigger, and in order to facilitate the understanding of the activity range of the visitor in the enterprise campus, so as to receive the visitor more politely or guide the visitor to move within the specified activity range, the visitor or the visiting vehicle needs to be located after the visitor enters the enterprise.

The positioning accuracy of the outdoor satellite navigation usually has an error of 5-20 meters, so that the vehicle easily misses an intersection and cannot find a parking space; meanwhile, the indoor positioning is usually carried out by adopting a Bluetooth RSSI (Received Signal Strength Indication) Signal Strength mode, and an error of 5-10 meters also exists; when the visitor or the vehicle enters the room, the direction is easy to lose, so that the reception staff cannot receive the visitor quickly and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide an electronic card circuit, an electronic card and a positioning system, which can more accurately position visitors, and facilitate the visitors to know the positions of the visitors.

In order to achieve the above object, the utility model adopts the following technical scheme:

an electronic workcard circuit is applied to an electronic workcard, and comprises an electronic workcard main body, wherein the electronic workcard main body is provided with a connecting part, a starting button and a power supply interface; the electronic card circuit comprises: the Bluetooth module is used for sending and receiving information of the Bluetooth AOA base station.

Furthermore, the electronic workcard circuit further comprises a UART-to-USB module, and the UART-to-USB module is connected with the MCU module.

Furthermore, the electronic workmanship board circuit further comprises a power supply module, wherein the power supply module is used for supplying power to the MCU module, the 4G module, the GNSS receiver module, the Bluetooth module, the IMU module and the UART-to-USB module.

Further, the power supply module comprises a charging management circuit, a built-in battery, a power supply selection circuit, a 5V-to-3.3V voltage reduction circuit, a 5V-to-3.8V voltage reduction circuit and an electric quantity detection circuit, the charging management circuit is connected with the power supply selection circuit through the built-in battery, the built-in battery is connected with the MCU module through the electric quantity detection circuit, and the power supply selection circuit is connected with the 5V-to-3.3V voltage reduction circuit and the 5V-to-3.8V voltage reduction circuit.

Further, the MCU module comprises an MCU chip with the model of STM32F401CBU 6.

An electronic workcard comprises the electronic workcard circuit.

A positioning system comprising an electronic workcard as described above.

The beneficial effects of the utility model reside in that:

the utility model discloses contain MCU module, 4G module, GNSS receiver module, bluetooth module and IMU module, the MCU module with 4G module, GNSS receiver module, bluetooth module and IMU module are connected, bluetooth module is used for sending and receiving the information of bluetooth AOA basic station. The utility model discloses can fix a position visitor more accurately, make things convenient for the waiter to know the position that visitor located.

Drawings

Fig. 1 is a schematic diagram of the electronic card circuit of the present invention.

Fig. 2 is a schematic diagram of the power supply module of the present invention.

Fig. 3 is a frame diagram of the GNSS receiver module of the present invention for performing positioning information interaction.

Fig. 4 is a schematic view of the electronic card of the present invention.

Detailed Description

Please refer to fig. 1-4, the present invention relates to an electronic card circuit, an electronic card and a positioning system, the positioning system comprises the electronic card, the electronic card comprises an electronic card main body 2 and an electronic card circuit, the electronic card circuit is disposed on the electronic card main body 2, the electronic card main body 2 is provided with a connection portion 1, a power button and a power interface. The connecting part 1 is used for connecting a workday brand belt, the starting button is hidden in the electronic workday brand main body 2, and a special tool is required to be used for starting and stopping the machine; the power supply interface is also hidden in the electronic workmanship tablet main body 2 and is used for charging the electronic workmanship tablet. The electronic workmanship card main body 2 is provided with information such as units, names, numbers and the like, and when the electronic workmanship card main body is distributed to visitors, identity information of the visitors is associated with the numbers in advance. The information on the electronic card is simple because the information is used by the visitor, and the problem that the visitor excessively studies the electronic card to cause unnecessary trouble is mainly avoided.

The electronic card circuit comprises: the Bluetooth module is used for sending and receiving information of the Bluetooth AOA base station. Further, the MCU module comprises an MCU chip with the model of STM32F401CBU 6.

In the scheme, the MCU module is a control center of the electronic workcard circuit, when the electronic workcard circuit is outdoors, original observed quantity data output by the GNSS and position correction data information sent by the CORS service platform are obtained to perform RTK calculation, and high-precision positioning information is output. And then, data fusion is further carried out on the IMU measurement data and the obtained IMU measurement data, positioning information with high precision and high updating rate is output, and finally the calculated position information is sent to an application end platform through a 4G module so as to realize the positioning of the visitor. When the electronic workmanship board circuit is in an indoor environment, the Bluetooth antenna is used for transmitting a direction-finding signal, the Bluetooth AOA base station senses a radio direction-finding signal transmitted by the electronic workmanship board through the built-in antenna array, when the signal passes through the array antenna, a phase difference is generated due to different distances received in the array, a relative signal direction is calculated, finally, the calculated position information and the obtained IMU measurement data are fused, the positioning information with high precision and high updating rate is output, and the positioning information is sent to the application end platform so as to realize the positioning of visitors. The MCU module coordinates the work and parameter configuration of peripheral sensor equipment and switches indoor and outdoor environments of the electronic workmanship board; and judging the working state of the electronic work card. The utility model discloses an outdoor RTK high accuracy positioning technique and indoor bluetooth AOA reach Angle method (Angle of Arrival) positioning technique can promote positioning accuracy by a wide margin, and positioning accuracy is steerable in the sub-meter level to can know the position that visitor located more accurately. Wherein,

an IMU module: the Inertial measurement unit (Inertial measurement unit, IMU for short); the IMU module is a device that measures the three-axis attitude angles (or angular rates) and acceleration of an object. As can be understood, the IMU module is used for acquiring information such as acceleration and attitude of the mobile carrier, and performing fusion positioning with RTK or bluetooth AOA to improve accuracy; and meanwhile, the MCU is used for judging the working state of the electronic workcards so as to set the awakening or sleeping conditions of the electronic workcards, if the electronic workcards are static, part of peripheral equipment or functions are closed through the MCU so as to enter the sleeping state, and when the electronic workcards are detected to be in the moving state, the positioning function is awakened. Meanwhile, the positioning updating frequency of the electronic work card is automatically adjusted according to the speed, so that the power consumption is reduced.

A Bluetooth module: when the Bluetooth AOA base station is indoors, the Bluetooth AOA base station is used for sending and receiving information of the Bluetooth AOA base station;

a GNSS receiver module: when the device is outdoors, the device receives satellite positioning signals, outputs GGA position data and original observation quantity data, and simultaneously sends the acquired GGA position information and the original observation quantity data to the MCU module.

A 4G module: the method is used for establishing communication connection with a server, and specifically comprises the following steps: the position correction data and the position information are sent to the CORS server platform; and the positioning information and the IMU data which are used for sending the RTK solution are sent to the application end platform.

In this embodiment, the electronic card circuit further includes a UART-to-USB module, and the UART-to-USB module is connected to the MCU module. The UART-to-USB module is used for downloading and updating application programs. Furthermore, the electronic workmanship board circuit further comprises a power supply module, and the power supply module is used for supplying power to the MCU module, the 4G module, the GNSS receiver module, the Bluetooth module, the IMU module and the UART-to-USB module. Furthermore, the power supply module comprises a charging management circuit, a built-in battery, a power selection circuit, a 5V-to-3.3V voltage reduction circuit, a 5V-to-3.8V voltage reduction circuit and an electric quantity detection circuit, the charging management circuit is connected with the power selection circuit through the built-in battery, the built-in battery is connected with the MCU module through the electric quantity detection circuit, and the power selection circuit is connected with the 5V-to-3.3V voltage reduction circuit and the 5V-to-3.8V voltage reduction circuit.

The GNSS receiver module carries out the working principle of positioning information interaction:

the network RTK technology is based on a continuously operating reference station system (CORS), makes up for the defects of the conventional RTK, can realize real-time high-precision positioning (centimeter level) of an area range, and is a new generation of high-precision positioning technology. The network RTK technology is represented by virtual reference station technology (VRS), the VRS generates a virtual reference station at a position near a user, models errors related to space distances such as troposphere and ionosphere delay at the virtual reference station, generates a VRS virtual observation value and broadcasts the VRS virtual observation value to the rover, and real-time high-precision positioning of the rover is achieved.

The electronic workmanship board receives satellite signals through an electronic workmanship board module containing a GNSS receiver module, acquires low-precision GGA data, and then sends the low-precision GGA data to a CORS high-precision positioning network cloud service platform through a 4G network; the CORS positioning network cloud service platform generates a virtual reference station at a position near a user through a CORS high-precision positioning network according to the acquired GGA position information, models errors related to space distances such as troposphere and ionosphere delay at the virtual reference station, generates VRS virtual observation value correction data, and broadcasts the VRS virtual observation value correction data to an electronic work card through 4G according to difference data in an RTCM format; the electronic workhorse transmits the acquired difference data in the RTCM format to an MCU module in a circuit of the electronic workhorse, the MCU module performs RTK (real-time kinematic) solution by using the acquired original observed quantity data output by the GNSS (global navigation satellite system) and the acquired difference data in the RTCM format, outputs high-precision GGA (general packet radio service) data and transmits the high-precision GGA data to an application end platform through a 4G network; after the application end platform receives the GGA data of the electronic workcards, the position information of the electronic workcards can be searched in real time so as to achieve the purpose of positioning the electronic workcards.

An electronic workcard comprises the electronic workcard circuit.

A positioning system comprising an electronic workcard as described above.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. An electronic workcard circuit is applied to an electronic workcard and is characterized in that the electronic workcard comprises an electronic workcard main body, and the electronic workcard main body is provided with a connecting part, a starting button and a power interface; the electronic card circuit comprises: the Bluetooth module is used for sending and receiving information of the Bluetooth AOA base station.

2. The electronic card circuit as claimed in claim 1, wherein: the electronic work card circuit further comprises a UART-to-USB module, and the UART-to-USB module is connected with the MCU module.

3. The electronic workcard circuit as claimed in claim 2, wherein: the electronic workcard circuit further comprises a power supply module, and the power supply module is used for supplying power to the MCU module, the 4G module, the GNSS receiver module, the Bluetooth module, the IMU module and the UART-to-USB module.

4. The electronic card circuit as claimed in claim 3, wherein: the power supply module comprises a charging management circuit, a built-in battery, a power supply selection circuit, a 5V-to-3.3V voltage reduction circuit, a 5V-to-3.8V voltage reduction circuit and an electric quantity detection circuit, the charging management circuit is connected with the power supply selection circuit through the built-in battery, the built-in battery is connected with the MCU module through the electric quantity detection circuit, and the power supply selection circuit is connected with the 5V-to-3.3V voltage reduction circuit and the 5V-to-3.8V voltage reduction circuit.

5. The electronic workcard circuit as claimed in claim 1, wherein: the MCU module comprises an MCU chip with the model of STM32F401CBU 6.

6. An electronic card, its characterized in that: the electronic card comprises an electronic card circuit as claimed in any one of claims 1 to 5.

7. A positioning system, characterized by: the positioning system comprises an electronic workcard as claimed in claim 6.