CN213844341U

CN213844341U - Electronic tablet and electronic tablet mapping wireless communicator

Info

Publication number: CN213844341U
Application number: CN202022478013.3U
Authority: CN
Inventors: 刘延松; 贾光军; 李雷
Original assignee: Beijing Institute of Surveying and Mapping
Current assignee: Beijing Institute of Surveying and Mapping
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-30
Anticipated expiration: 2030-10-30

Abstract

The application discloses electronic tablet and electronic tablet mapping wireless communicator, which removes trip of communication cables and eliminates safety risks caused by trip. The electronic tablet includes: the system comprises a total station, a portable computer, a total station end wireless transceiver and a computer end wireless transceiver; the total station end wireless transceiver includes: the wireless data transmission system comprises a first wireless data transmission module connected to a communication interface of the total station and a first power supply module used for supplying power to all modules in a wireless transceiver at the total station end; the computer-side wireless transceiver comprises: the second wireless data transmission module is connected to a communication interface of the portable computer, and the second power supply module is used for supplying power to each module in the computer-side wireless transceiver; the first wireless data transmission module and the second wireless data transmission module are connected through wireless radio frequency communication.

Description

Electronic tablet and electronic tablet mapping wireless communicator

Technical Field

The utility model relates to an electronic flat-panel mapping technical field, more specifically say, relate to an electronic flat-panel and electronic flat-panel mapping wireless communicator.

Background

The electronic flat board is a terrain mapping system mainly composed of a total station and a portable computer provided with ground digital mapping software. When mapping is carried out in the field, the total station is connected with a portable computer on site, the total station is used for measuring data on site and transmitting the data to the portable computer, and the portable computer is used as a carrier for recording and mapping, so that the simultaneous measurement, the simultaneous recording, the simultaneous display and the real-time mapping on site are realized.

As shown in fig. 1, the total station 1 and the portable computer 2 are typically connected together by a communication cable 3, but there are a number of disadvantages:

1) an observer can continuously rotate around the total station in the observation process and easily drag a communication cable to cause the damage of the communication cable or an interface;

2) because multiple station moving is needed in the mapping process, and the communication cable needs to be pulled out from the portable computer or the total station every time the station is moved, the communication cable or the interface is also easily damaged;

3) due to the length limitation of the communication cable, the plotter can only be confined around the total station, and is inconvenient to look ahead to see the live scene.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electronic flat board and electronic flat board mapping wireless communication ware has got rid of the trip of communication cable, has eliminated the safety risk that causes from this.

An electronic tablet comprising: the system comprises a total station, a portable computer, a total station end wireless transceiver and a computer end wireless transceiver;

the total station end wireless transceiver includes: the wireless data transmission system comprises a first wireless data transmission module connected to a communication interface of the total station and a first power supply module used for supplying power to all modules in a wireless transceiver at the total station end;

the computer-side wireless transceiver comprises: the second wireless data transmission module is connected to a communication interface of the portable computer, and the second power supply module is used for supplying power to each module in the computer-side wireless transceiver;

the first wireless data transmission module and the second wireless data transmission module are connected through wireless radio frequency communication.

Optionally, the first wireless data transmission module and the second wireless data transmission module are both HC-12 wireless serial communication modules, and the parameter settings of the two HC-12 wireless serial communication modules are consistent.

Optionally, the total station end wireless transceiver further includes: the first communication interface conversion circuit is connected between the first wireless data transmission module and the communication interface of the total station;

the computer-side wireless transceiver further comprises: and the second communication interface conversion circuit is connected between the second wireless data transmission module and the communication interface of the portable computer.

Optionally, the communication interface of the total station is an RS232 serial port; the communication interface of the first wireless data transmission module is an RS232-TTL level conversion circuit;

the communication interface of the portable computer is a USB interface; the second communication interface conversion circuit is a USB-to-TTL circuit;

the second power supply module is a USB interface of the second communication interface conversion circuit.

Optionally, the first power module is a rechargeable battery.

Optionally, when a voltage difference exists between the first power module and a module to be powered by the first power module, a corresponding DC/DC conversion circuit is arranged in the wireless transceiver at the total station end;

when a voltage difference exists between the second power supply module and the module to be powered, a corresponding DC/DC conversion circuit is arranged in the computer-end wireless transceiver.

An electronic tablet mapping wireless communicator, comprising: a total station end wireless transceiver and a computer end wireless transceiver;

the total station end wireless transceiver includes: the system comprises a first wireless data transmission module used for connecting a communication interface of the total station and a first power supply module used for supplying power to each module in a wireless transceiver at the total station end;

the computer-side wireless transceiver comprises: the second wireless data transmission module is used for connecting a communication interface of the portable computer, and the second power supply module is used for supplying power to each module in the computer-side wireless transceiver;

Optionally, the total station end wireless transceiver further includes: the first communication interface conversion circuit is used for connecting the first wireless data transmission module with a communication interface of the total station;

the computer-side wireless transceiver further comprises: and the second communication interface conversion circuit is used for connecting the second wireless data transmission module with a communication interface of the portable computer.

Optionally, a communication interface of the first wireless data transmission module is an RS232-TTL level conversion circuit;

the second communication interface conversion circuit is a USB-to-TTL circuit;

According to the above technical scheme, the utility model discloses directly replace the communication cable that uses between total powerstation and the portable computer with the radio frequency communication mode, need not change the software in total powerstation, the portable computer, the radio frequency communication mode has low cost, low-power consumption, high reliability, communication distance can extend etc. advantage, when satisfying the communication requirement between total powerstation and the portable computer, still has got rid of tying of the communication cable, has eliminated the safety risk that causes from this.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic flat panel disclosed in the prior art;

fig. 2 is a schematic structural view of an electronic tablet according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a total station-side wireless transceiver and a computer-side wireless transceiver disclosed in an embodiment of the present invention;

fig. 4 is a schematic structural view of another total station-side wireless transceiver and a computer-side wireless transceiver disclosed in an embodiment of the present invention;

fig. 5 is a schematic structural view of another total station-side wireless transceiver and a computer-side wireless transceiver disclosed in an embodiment of the present invention;

FIG. 6 is a schematic diagram of an RS232-TTL level shift circuit.

Detailed Description

For reference and clarity, the terms, abbreviations or abbreviations used hereinafter are summarized as follows:

RS 232: the technical standard of a serial binary data exchange interface between data terminal equipment and data communication equipment;

TTL: transistor Logic, Transistor-Transistor Logic level;

USB: universal Serial BUS.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 2-3, an embodiment of the present invention discloses an electronic flat panel, including: the system comprises a total station 1, a portable computer 2, a total station end wireless transceiver 4 and a computer end wireless transceiver 5;

wherein, total powerstation end wireless transceiver 4 includes: a first wireless data transmission module 41 connected to a communication interface of the total station 1, and a first power supply module 42 for supplying power to each module in the total station wireless transceiver 4;

the computer-side wireless transceiver 5 includes: a second wireless data transmission module 51 connected to the communication interface of the portable computer 2, and a second power module 52 for supplying power to each module in the computer-side wireless transceiver 5;

the first wireless data transmission module 41 and the second wireless data transmission module 51 are connected by wireless radio frequency communication.

According to the above description, the embodiment of the utility model provides a directly replace the communication cable that uses between total powerstation 1 and the portable computer 2 with the radio frequency communication mode, need not change the software in total powerstation 1, portable computer 2, the radio frequency communication mode has low cost, low-power consumption, high reliability, communication distance can extend the advantage such as, when satisfying the communication requirement between total powerstation 1 and the portable computer 2, still has got rid of trip of the communication cable, has eliminated the safety risk that causes from this. The trip of the communication cable is eliminated, and the safety risk caused by the trip is eliminated, and the trip is specifically embodied in that: the wired communication is replaced by the wireless radio frequency communication mode, so that the communication cable or the interface is not damaged due to repeated pulling and plugging of the communication cable; due to the extension of the communication distance, an observer does not need to stay near a total station all the time, the observer can be remotely instructed to observe, and a new operation mode is added to electronic flat-panel mapping.

Optionally, in the above embodiment, the first wireless data transmission module 41 and the second wireless data transmission module 51 are both implemented by using an HC-12 wireless serial communication module, and the parameter settings of the two HC-12 wireless serial communication modules are consistent.

Specifically, the HC-12 wireless serial communication module is a new generation of multi-channel embedded wireless data transmission module, and its own characteristics determine that communication connection can be automatically established as long as the parameter settings of two HC-12 wireless serial communication modules are consistent, the parameter only needs to be initially set once, and is not required to be set once every time the computer is started, and the communication delay is only in the order of tens of milliseconds.

Optionally, in the above embodiment, the working frequency bands of the two HC-12 wireless serial port communication modules are at 433MHz frequency band, and the communication distance can reach 1000 meters.

Optionally, referring to fig. 4, in any of the embodiments disclosed above, when the communication interface of the total station 1 is different from the communication interface of the first wireless data transmission module 41, the total station-side wireless transceiver 4 further includes: a first communication interface conversion circuit 43 connected between the communication interface of the total station 1 and the communication interface of the first wireless data transmission module 41;

when the communication interface of the portable computer 2 is different from the communication interface of the second wireless data transmission module 51, the computer-side wireless transceiver 5 further includes: and a second communication interface conversion circuit 53 connected between the communication interface of the portable computer 2 and the communication interface of the second wireless data transmission module 51.

For example, it is known that the communication interface of the HC-12 wireless serial port communication module is a TTL serial port, and when the first wireless data transmission module 41 is the HC-12 wireless serial port communication module and the communication interface of the total station 1 is an RS232 serial port, since the TTL serial port and the RS232 serial port use different level standards and cannot directly communicate with each other, an RS232-TTL level conversion circuit is needed when the first wireless data transmission module 41 is connected to the total station 1. Similarly, when the second wireless data transmission module 51 is an HC-12 wireless serial communication module and the communication interface of the portable computer 2 is a USB interface, a USB to TTL circuit is needed when the second wireless data transmission module 51 is connected to the portable computer 2.

It should be noted that, when the second communication interface conversion circuit 53 is connected to the portable computer 2 through the USB interface, the portable computer 2 can directly provide power for the computer wireless transceiver 2 through the USB interface and perform data transmission. That is, the USB interface of the second wireless data transmission module 51 is the second power module 52.

Optionally, in any of the embodiments disclosed above, the first power module 42 is, for example, a rechargeable battery, such as a lithium battery.

Optionally, in any of the embodiments disclosed above, when there is a voltage difference between the first power module 42 and the second power module 52 and the module to be powered, a corresponding DC/DC conversion circuit may be provided.

As shown for example in fig. 5, the total station end wireless transceiver 4 further comprises: a first DC/DC conversion circuit 44 connected between the first communication interface conversion circuit 43 and the first power supply module 42;

the computer-side wireless transceiver 5 further includes: and a second DC/DC conversion circuit 54 connected between the second wireless data transmission module 51 and the second power supply module 52.

The communication interface of the total station 1 in the present application refers to an interface of the total station 1 originally connected with a communication cable, and the output level of the first communication interface conversion circuit 43 needs to reach the level of the communication cable; when the voltage of the first power module 42 is higher or lower than the output level of the first communication interface conversion circuit 43, a corresponding DC/DC conversion circuit needs to be provided between the first communication interface conversion circuit 43 and the first power module 42. Similarly, the communication interface of the portable computer 2 mentioned in the present application refers to an interface of the portable computer 2 originally connected to the communication cable, and the output level of the second communication interface conversion circuit 53 needs to reach the level of the communication cable; when the voltage of the second power module 52 is higher or lower than the output level of the second communication interface converting circuit 53, a corresponding DC/DC converting circuit needs to be disposed between the second communication interface converting circuit 53 and the second power module 52.

Assuming that, in a certain scenario, the first communication interface conversion circuit 43 whose output level is to reach the level of the communication cable needs to be powered by 5V voltage through measurement, and the first power module 42 needs to be powered by 3.7V voltage, at this time, the first DC/DC conversion circuit 44 needs to be used to boost the voltage to 5V; the first wireless data transmission module 41 needs to be powered by 3.7V voltage, and can be directly powered by the first power supply module 42; the second communication interface conversion circuit 53 needs to be powered by 5V voltage, the USB interface is powered by 5V, and the USB interface can directly supply power to the second communication interface conversion circuit 53; the second wireless data transmission module 51 needs to be powered by a voltage lower than 5V, and the USB interface voltage needs to be reduced by the second DC/DC conversion circuit 54 and then supplied to the second wireless data transmission module 51.

Optionally, in any of the embodiments disclosed above, the printed circuit board of the total station-side wireless transceiver 4 is a double-sided board, so as to reduce the size and cost.

Optionally, in any of the embodiments disclosed above, in order to facilitate adaptation to different types of total stations, the connection line with the total station is designed to be replaceable, and the connection line and the transceiver are switched by using a GX12 type aviation plug.

Optionally, in this application, the RS232-TTL level conversion circuit may be implemented by using a MAX3232 chip, referring to a MAX3232 instruction manual, which is shown in a circuit diagram of fig. 6, in the total station end wireless transceiver 4, the MAX3232 chip is connected to the HC-12 wireless serial port communication module serving as the first wireless data transmission module 41.

Corresponding with above-mentioned embodiment, the embodiment of the utility model also discloses an electronic flat plate mapping wireless communicator, include: a total station end wireless transceiver and a computer end wireless transceiver;

Optionally, in the above embodiment of the electronic tablet mapping wireless communicator, the total station end wireless transceiver further includes: the first communication interface conversion circuit is used for connecting the first wireless data transmission module with a communication interface of the total station;

Optionally, in the above embodiment of the electronic tablet mapping wireless communicator, the communication interface of the first wireless data transmission module is an RS232-TTL level conversion circuit;

the second communication interface conversion circuit is a USB-to-TTL circuit;

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the electronic tablet mapping wireless communicator disclosed in the embodiment, since the electronic tablet mapping wireless communicator corresponds to the electronic tablet disclosed in the embodiment, the description is simple, and relevant points can be referred to the partial description of the electronic tablet.

The terms "first," "second," and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the embodiments of the invention. Thus, the present embodiments are not intended to be limited to the embodiments shown herein but are to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic tablet, comprising: the system comprises a total station, a portable computer, a total station end wireless transceiver and a computer end wireless transceiver;

2. The electronic tablet according to claim 1, wherein the first wireless data transmission module and the second wireless data transmission module are both HC-12 wireless serial communication modules, and the parameter settings of the two HC-12 wireless serial communication modules are consistent.

3. The electronic tablet of claim 2, wherein:

the total station end wireless transceiver further comprises: the first communication interface conversion circuit is connected between the first wireless data transmission module and the communication interface of the total station;

4. The electronic tablet of claim 3, wherein:

the communication interface of the total station is an RS232 serial port; the communication interface of the first wireless data transmission module is an RS232-TTL level conversion circuit;

5. The electronic tablet of claim 1, wherein the first power module is a rechargeable battery.

6. The electronic tablet of claim 1, wherein:

when a voltage difference exists between the first power supply module and a module to be powered by the first power supply module, a corresponding DC/DC conversion circuit is arranged in the wireless transceiver at the total station end;

7. An electronic tablet mapping wireless communicator, comprising: a total station end wireless transceiver and a computer end wireless transceiver;

8. The electronic tablet mapping wireless communicator of claim 7, wherein the first wireless data transmission module and the second wireless data transmission module are both HC-12 wireless serial communication modules, and parameter settings of the two HC-12 wireless serial communication modules are consistent.

9. The electronic tablet mapping wireless communicator of claim 8, wherein:

the total station end wireless transceiver further comprises: the first communication interface conversion circuit is used for connecting the first wireless data transmission module with a communication interface of the total station;

10. The electronic tablet mapping wireless communicator of claim 9, wherein:

the communication interface of the first wireless data transmission module is an RS232-TTL level conversion circuit;

the second communication interface conversion circuit is a USB-to-TTL circuit;