CN105738645A - Velocity measurement method and device based on terminal - Google Patents

Abstract

The present invention discloses a terminal-based speed measurement method and device, wherein the method includes: when the terminal receives a speed measurement trigger instruction, according to the speed measurement trigger instruction, control and start a preset distance measuring sensor arranged on the terminal; The distance measuring sensor sends a first transmission signal to the object to be measured; when the terminal receives a speed measurement stop instruction, it sends a second transmission signal to the object to be measured through the preset distance measurement sensor; based on the first transmission signal and the second transmission signal, treat The speed of the moving object is measured. In the embodiment of the present invention, a distance measuring sensor is directly installed on the terminal. When the object starts to move and stops moving, the distance measuring sensor sends a transmission signal to locate the object, so that when the terminal is stationary, the moving object outside the terminal can also be detected. Speed measurement improves the flexibility and convenience of speed measurement operation.

Description

A terminal-based speed measurement method and device

technical field

The invention belongs to the technical field of communication, and in particular relates to a method and device for measuring speed based on a terminal.

Background technique

With the rapid development of science and technology, various personalized functions and applications of terminals have brought a lot of convenience to our life, and at the same time, users have more and more functional requirements for terminals.

For example, the user can use the terminal (smart phone) to measure the speed. At present, most of the user's terminal speed measurement is realized through the global positioning system (GPS, Global Positioning System) navigation, such as moving through the terminal and using GPS to locate the terminal. , so as to measure the speed according to the location information and duration.

During the research and practice of the existing technology, the inventors of the present invention found that this speed measurement method can only be realized by relying on the movement of the terminal itself, so the speed measurement operation will be less flexible and less convenient The problem.

Contents of the invention

The purpose of the present invention is to provide a terminal-based speed measurement method and device, aiming at improving the flexibility and convenience of the terminal-based speed measurement operation.

In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:

A terminal-based speed measurement method, including:

When the terminal receives the speed measurement trigger instruction, according to the speed measurement trigger instruction, control and start the preset ranging sensor provided on the terminal;

sending a first transmission signal to the object to be measured through the preset ranging sensor;

When the terminal receives a speed measurement stop instruction, send a second transmission signal to the object to be measured through the preset ranging sensor;

Based on the first transmission signal and the second transmission signal, the moving speed of the object to be measured is measured.

In order to solve the above technical problems, embodiments of the present invention also provide the following technical solutions:

A terminal-based speed measuring device comprising:

The control unit is used to control and start the preset ranging sensor provided on the terminal according to the speed measurement trigger instruction when the terminal receives the speed measurement trigger instruction;

A first sending unit, configured to send a first transmission signal to the object to be measured through the preset ranging sensor;

The second sending unit is configured to send a second transmission signal to the object to be measured through the preset range sensor when the terminal receives a speed measurement stop instruction;

A speed measurement unit, configured to measure the moving speed of the object to be measured based on the first transmission signal and the second transmission signal.

Compared with the prior art, in the embodiment of the present invention, firstly, when the terminal receives the speed measurement trigger command, it controls to start the preset distance measuring sensor provided on the terminal, and sends the first transmission signal to the object to be measured speed through the distance measurement sensor ; Then, during the movement of the terminal, when the terminal receives the speed measurement stop instruction, the distance measuring sensor sends a second transmission signal to the object to be measured, and finally combines the first transmission signal and the second transmission signal to determine the speed of the object to be measured. to measure the moving speed; that is, the embodiment of the present invention directly sets a ranging sensor on the terminal, and when the object starts to move and stops moving, the ranging sensor sends a transmission signal to locate the object, so that when the terminal is stationary, it can also be located. The speed measurement of moving objects outside the terminal improves the flexibility and convenience of the speed measurement operation.

Description of drawings

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

FIG. 1 is a schematic flowchart of a terminal-based speed measurement method provided in a first embodiment of the present invention;

FIG. 2a is a schematic flowchart of a terminal-based speed measurement method provided by a second embodiment of the present invention;

FIG. 2b is a schematic structural diagram of a terminal provided by a second embodiment of the present invention;

Fig. 3a is a schematic structural diagram of a terminal-based speed measurement device provided by a third embodiment of the present invention;

Fig. 3b is another schematic structural diagram of a terminal-based speed measuring device according to the third embodiment of the present invention.

detailed description

Referring to the drawings, wherein like reference numerals represent like components, the principles of the present invention are exemplified when implemented in a suitable computing environment. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.

In the following description, specific embodiments of the present invention will be described with reference to steps and symbols executed by one or more computers, unless otherwise stated. Accordingly, these steps and operations will several times be referred to as being computer-implemented, which herein refers to operations by a computer processing unit of electronic signals representing data in a structured form. This operation transforms the data or maintains it at a location in the computer's memory system that can reconfigure or otherwise alter the operation of the computer in a manner well known to testers in the art. The data structures maintained by the data are physical locations in the memory that have certain characteristics defined by the data format. However, the principles of the present invention are described in the above words, which are not meant to be a limitation. Those skilled in the art will understand that the various steps and operations described below can also be implemented in hardware.

The term "module" as used herein may be considered a software object that executes on the computing system. The various components, modules, engines and services described herein can be considered as implementation objects on the computing system. The devices and methods described herein are preferably implemented in the form of software, and of course they can also be implemented in hardware, all of which are within the protection scope of the present invention.

The details will be described respectively below.

first embodiment

In this embodiment, it will be described from the perspective of a terminal-based speed measuring device, which can be specifically integrated on a terminal, which can be a mobile phone, a tablet computer, etc., which have a storage unit and a microprocessor installed. A terminal with computing power.

A speed measurement method based on a terminal, including: when the terminal receives a speed measurement trigger instruction, according to the speed measurement trigger instruction, control and start a preset distance measuring sensor arranged on the terminal; A transmission signal; when the terminal receives a speed measurement stop instruction, the terminal sends a second transmission signal to the object to be measured through the preset range sensor; based on the first transmission signal and the second transmission signal, the moving speed of the object to be measured is measured.

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of a terminal-based speed measurement method provided by a first embodiment of the present invention. The methods include:

In step S101, when the terminal receives a speed measurement trigger instruction, according to the speed measurement trigger instruction, it controls to activate a preset distance measuring sensor provided on the terminal.

In step S102, a first transmission signal is sent to the object to be measured through a preset distance measuring sensor.

In step S103, when the terminal receives the instruction to stop the speed measurement, the terminal sends a second transmission signal to the object to be measured through the preset range sensor.

Wherein, the steps S101 to S103 may specifically be:

In the embodiment of the present invention, the terminal can specifically be a mobile phone, a tablet computer, etc., which has a storage unit and is installed with a microprocessor and has computing capabilities; wherein, the terminal is provided with a ranging sensor for moving the object to be measured. distance to detect.

It can be understood that the preset ranging sensor may specifically be a light wave sensor (such as a laser sensor, an infrared sensor) and an ultrasonic sensor, etc., which are not specifically limited here.

Specifically, for example, when the terminal receives the speed measurement trigger instruction, that is, when the user triggers the distance measurement sensor to be turned on through the terminal, it sends the first control signal to the distance measurement sensor, so as to control the preset distance measurement sensor to send the first control signal to the object to be measured. A signal is transmitted.

Further, after the first transmission signal is sent to the object to be measured by the preset distance measuring sensor, it may also include:

Step S1021. Obtain a first reflected signal returned after the first transmitted signal is sent to the object to be measured.

Step S1022. Based on the first transmitted signal and the first reflected signal, determine first time information.

That is to say, the distance measuring sensor sends the first transmission signal to the object to be measured, and the first transmission signal will receive the returned first reflection signal after encountering the object to be measured, so that it can be determined according to the first transmission signal and the first reflection signal Out of the first time information.

It can be understood that, during the moving process of the object to be measured, when the terminal receives a speed measurement stop instruction, for example, when the user turns off the distance measuring sensor through the terminal, a second control signal is sent to the distance measuring sensor to control the speed measurement through the It is assumed that the distance measuring sensor sends a second transmission signal to the object to be measured; for another example, according to a predetermined time interval, a second control signal is sent to the distance measurement sensor to control the transmission of the second transmission signal to the object to be measured by the preset distance measurement sensor , so that the speed can be detected from the two emission signals.

Furthermore, after the second transmission signal is sent to the object to be measured by the preset distance measuring sensor, it may also include:

Step S1031, acquiring a second reflected signal returned after the second transmitted signal is sent to the object to be measured;

Step S1032: Determine second time information based on the second transmitted signal and the second reflected signal.

That is to say, the distance measuring sensor sends a second transmission signal to the object to be measured, and the second transmission signal will receive the returned second reflection signal after encountering the object to be measured, so that it can be determined according to the second transmission signal and the second reflection signal Out of the second time information.

It is easy to think that "first" and "second" in the embodiments of the present invention are only for distinction and description, and do not constitute a limitation to the implementation of the present invention.

In step S104, based on the first transmission signal and the second transmission signal, the moving speed of the object to be measured is measured.

It can be understood that, before measuring the moving speed of the object to be measured based on the first transmitted signal and the second transmitted signal, it may further include:

The time difference between sending the first transmission signal to the object to be measured and the time difference between sending the second transmission signal to the object to be measured is recorded.

For example, when the terminal sends the first transmission signal, record the current time as T1, and when the terminal sends the second transmission signal, record the current time as T2, so as to calculate the time difference based on T1 and T2, where the time difference can be considered as the time of terminal movement time.

In some implementation manners, the time difference may also be determined according to time information of the first reflected signal and the returned second reflected signal received by the terminal.

In this embodiment, based on the first transmission signal and the second transmission signal, measuring the moving speed of the object to be measured may specifically include:

Step S1041, based on the first time information and the second time information, determine the moving distance of the object to be measured.

Step S1042, measure the moving speed of the object to be measured according to the moving distance and the time difference.

For example, the preset speed sensor may specifically be a light wave sensor. Since it is light wave transmission, the moving distance of the object to be measured can be determined according to the speed of light, the first time information and the second time information.

Further, the average moving speed of the object to be measured can be estimated according to the moving distance and the time difference. Obviously, the smaller the time difference, the more accurate the calculated instantaneous speed of the object to be measured can be.

In addition, preferably, when the terminal receives the speed measurement stop instruction, it can control to turn off the preset distance measuring sensor in time according to the speed measurement stop instruction, so that the terminal can achieve the effect of battery life.

It can be seen from the above that, in the terminal-based speed measurement method provided by this embodiment, first, when the terminal receives a speed measurement trigger command, it controls to start the preset distance measuring sensor installed on the terminal, and sends a message to the object to be measured through the distance measurement sensor. The first transmission signal; then, when the terminal receives the speed measurement stop command during the movement of the terminal, the second transmission signal is sent to the object to be measured through the distance measuring sensor, and finally the first transmission signal and the second transmission signal are combined , to measure the moving speed of the object to be measured; that is, in the embodiment of the present invention, a distance measuring sensor is directly set on the terminal, and when the object starts to move and stops moving, the distance measuring sensor is used to send a transmission signal for positioning, so that when the terminal is stationary , It can also measure the speed of moving objects other than the terminal, which improves the flexibility and convenience of the speed measurement operation.

second embodiment

According to the method described in the first embodiment, an example will be given below for further detailed description.

Please refer to FIG. 2a. FIG. 2a is a schematic flowchart of a terminal-based speed measurement method provided by a second embodiment of the present invention. In this embodiment, taking the terminal as a mobile phone as an example, a method for measuring the speed of a moving object by a mobile phone is provided, wherein the method steps include:

In step S201, when the mobile phone receives a speed measurement trigger command, it controls to activate the laser sensor provided on the mobile phone.

It is understandable that with the development of semiconductor technology, more and more laser sensor solutions are used in electronic products, among which gallium arsenide lasers are more mature, which are characterized by high efficiency, small size, light weight, and structure Simple, low output power, etc., so the ranging sensor of the present invention can preferably be a gallium arsenide laser.

Preferably, this embodiment considers the scene of mobile phone distance measurement, and designs the laser transmitter end on the battery back cover or side (according to different requirements), and can refer to Figure 2b together, which is the setting of the laser sensor on the mobile phone Schematic diagram, for example, a laser opening area can be set on the upper end of the battery back cover of the mobile phone, so that people can easily operate when testing the speed of the object.

In step S202, the mobile phone transmits a first pulse to the object to be measured through the laser sensor.

In step S203, the mobile phone receives the first pulse of reflected laser light, and records the time as t1.

In step S204, after a preset time Δt, the mobile phone transmits a second pulse to the object to be measured through the laser sensor.

In step S205, the mobile phone receives the second pulse of reflected laser light, and records the time as t2.

In step S206, the mobile phone determines the corresponding distance S according to t1 and t2.

In step S207, the mobile phone measures the speed of the object to be measured according to the preset time Δt and the distance S.

Wherein, the steps S202 to S207 may specifically be:

For example, when the laser sensor is working, the laser emitting diode is aimed at the target object (that is, the object to be measured) to emit laser pulses. When the laser pulse encounters the target object, it will return to the receiving end of the laser sensor. At this time, the laser sensor will calculate the laser from the emission to the time it is received. Since the speed of light is very fast, the speed of light is about c=3*10^8m/s, so the distance between the target object and the test point can be tested in real time.

Further, the speed calculation method can be specifically as follows:

(1) When starting to test the speed, the laser sensor emits the first pulse (that is, the first pulse), and when the laser sensor receives the reflected laser light, the recording time is t1;

(2) After the time Δt (such as 1s, etc.), the laser sensor emits the second pulse (ie the second pulse), when the laser sensor receives the reflected laser light, the recording time is t2;

(3) Due to the speed of light propagation, plus the two recorded times are t1 and t2, the distance corresponding to the two times can be known as S=(c*t2-c*t1)/2, and this distance can be known at the same time The time difference is Δt, so the average speed within Δt time can be known.

It can be understood that in this embodiment, assuming that the Δt time is smaller, the calculated speed (ie, instantaneous speed) is more accurate; in this embodiment, Δt can be preset, so that according to the pulse signal transmitted twice The moving speed is calculated. In some embodiments, the emitted pulse signal can also be set by the user, that is, when starting to move and stopping moving, the laser sensor is respectively controlled to emit a pulse signal. Similarly, according to the two emitted pulses The signal is calculated to get the movement speed.

In addition, it is easy to imagine that in the embodiment of the present invention, the laser sensor can also be other types of sensors. If it is another light wave sensor such as infrared, it can be calculated according to the above calculation method; The transmission speed is used to calculate the moving distance, thereby calculating the speed, etc., which are not specifically limited here.

It can be seen from the above that, in the terminal-based speed measurement method provided by this embodiment, first, when the terminal receives a speed measurement trigger command, it controls to start the preset distance measuring sensor installed on the terminal, and sends a message to the object to be measured through the distance measurement sensor. The first transmission signal; then, when the terminal receives the speed measurement stop command during the movement of the terminal, the second transmission signal is sent to the object to be measured through the distance measuring sensor, and finally the first transmission signal and the second transmission signal are combined , to measure the moving speed of the object to be measured; that is, in the embodiment of the present invention, a distance measuring sensor is directly set on the terminal, and when the object starts to move and stops moving, the distance measuring sensor is used to send a transmission signal for positioning, so that when the terminal is stationary , It can also measure the speed of moving objects other than the terminal, which improves the flexibility and convenience of the speed measurement operation.

third embodiment

In order to better implement the terminal-based speed measurement method provided by the embodiment of the present invention, the embodiment of the present invention further provides a device based on the above-mentioned terminal-based speed measurement method. The meanings of the nouns are the same as those in the above-mentioned terminal-based speed measurement method, and for specific implementation details, please refer to the description in the method embodiments.

Please refer to Figure 3a, Figure 3a is a schematic structural diagram of a terminal-based speed measuring device provided by an embodiment of the present invention, wherein the terminal-based speed measuring device may include a control unit 301, a first sending unit 302, a second sending unit 303, and a speed measuring device Unit 304.

Wherein the control unit 301 is used to control and activate the preset distance measuring sensor provided on the terminal according to the speed measurement trigger instruction when the terminal receives the speed measurement trigger instruction; the first sending unit 302 is used to pass the preset measurement The distance sensor sends a first transmission signal to the object to be measured.

The second sending unit 303 is configured to send a second transmission signal to the object to be measured through the preset ranging sensor when the terminal receives a speed measurement stop instruction; the speed measurement unit 304 is configured to transmit a second transmission signal based on the first The transmitting signal and the second transmitting signal measure the moving speed of the object to be measured.

In the embodiment of the present invention, the terminal can specifically be a mobile phone, a tablet computer, etc., which has a storage unit and is installed with a microprocessor and has computing capabilities; wherein, the terminal is provided with a ranging sensor for moving the object to be measured. distance to detect.

It can be understood that the preset ranging sensor may specifically be a light wave sensor (such as a laser sensor, an infrared sensor) and an ultrasonic sensor, etc., which are not specifically limited here.

Specifically, for example, when the terminal receives the speed measurement trigger instruction, that is, when the user triggers the distance measurement sensor to be turned on through the terminal, it sends the first control signal to the distance measurement sensor, so as to control the preset distance measurement sensor to send the first control signal to the object to be measured. A signal is transmitted.

Further, reference can be made to FIG. 3b, which is another structural schematic diagram of a terminal-based speed measuring device provided in the third embodiment of the present invention, wherein the terminal-based speed measuring device may further include:

The first acquiring unit 305 is configured to acquire the first reflected signal returned after the first transmitted signal is sent to the object to be measured; the first determining unit 306 is configured to based on the first transmitted signal and the first reflected signal , to determine the first time information.

That is to say, the distance measuring sensor sends the first transmission signal to the object to be measured, and the first transmission signal will receive the returned first reflection signal after encountering the object to be measured, so that it can be determined according to the first transmission signal and the first reflection signal Out of the first time information.

It can be understood that, during the moving process of the object to be measured, when the terminal receives a speed measurement stop command, that is, when the user turns off the distance measuring sensor through the terminal, a second control signal is sent to the distance measuring sensor to control the distance through the preset The distance measuring sensor sends a second transmission signal to the object to be measured.

Furthermore, the terminal-based speed measurement device may also include:

The second acquiring unit 307 is configured to acquire a second reflected signal returned after the second transmitted signal is sent to the object to be measured; the second determining unit 308 is configured to based on the second transmitted signal and the second reflected signal , to determine the second time information.

That is to say, the distance measuring sensor sends a second transmission signal to the object to be measured, and the second transmission signal will receive the returned second reflection signal after encountering the object to be measured, so that it can be determined according to the second transmission signal and the second reflection signal Out of the second time information.

It is easy to think that "first" and "second" in the embodiments of the present invention are only for distinction and description, and do not constitute a limitation to the implementation of the present invention.

It can be understood that the terminal-based speed measurement device may also include:

The recording unit 309 is configured to record the time difference between sending the first transmission signal to the object to be measured and the time difference between sending the second transmission signal to the object to be measured.

For example, when the terminal sends the first transmission signal, record the current time as T1, and when the terminal sends the second transmission signal, record the current time as T2, so as to calculate the time difference based on T1 and T2, where the time difference can be considered as the time of terminal movement time.

In some implementation manners, the time difference may also be determined according to time information of the first reflected signal and the returned second reflected signal received by the terminal.

In this embodiment, the speed measurement unit 304 may specifically include:

a distance determining subunit, configured to determine the moving distance of the object to be measured based on the first time information and the second time information; a speed measuring subunit, configured to determine the moving distance of the object to be measured based on the moving distance and the time difference The moving speed of the object to be measured is measured.

For example, the preset speed sensor may specifically be a light wave sensor. Since it is light wave transmission, the moving distance of the object to be measured can be determined according to the speed of light, the first time information and the second time information.

Further, the average moving speed of the object to be measured can be estimated according to the moving distance and the time difference. Obviously, the smaller the time difference, the more accurate the calculated instantaneous speed of the object to be measured can be.

In addition, preferably, the control unit 301 can also be configured to control to turn off the preset distance measuring sensor according to the speed measuring stop instruction, so that the terminal can achieve the effect of battery life.

During specific implementation, each of the above units may be implemented as an independent entity, or may be combined arbitrarily as the same or several entities. The specific implementation of each of the above units may refer to the previous method embodiments, and will not be repeated here.

Specifically, the terminal-based speed measurement device may be integrated on a terminal, and the terminal may be a mobile phone, a tablet computer, or a terminal machine with a storage unit and a microprocessor installed therein, which has computing power.

It can be seen from the above that the terminal-based speed measuring device provided in this embodiment, firstly, when the terminal receives the speed measurement trigger command, it controls to start the preset distance measuring sensor installed on the terminal, and sends a message to the speed measuring object through the distance measuring sensor. The first transmission signal; then, when the terminal receives the speed measurement stop command during the movement of the terminal, the second transmission signal is sent to the object to be measured through the distance measuring sensor, and finally the first transmission signal and the second transmission signal are combined , to measure the moving speed of the object to be measured; that is, in the embodiment of the present invention, a distance measuring sensor is directly set on the terminal, and when the object starts to move and stops moving, the distance measuring sensor is used to send a transmission signal for positioning, so that when the terminal is stationary , It can also measure the speed of moving objects other than the terminal, which improves the flexibility and convenience of the speed measurement operation.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases. For the part that is not described in detail in a certain embodiment, refer to the detailed description of the terminal-based speed measurement method above, and will not be repeated here.

The terminal-based speed measurement device provided in the embodiment of the present invention is, for example, a computer, a tablet computer, a mobile phone with a touch function, etc., and the terminal-based speed measurement device is the same as the terminal-based speed measurement method in the above embodiment. It is conceived that any method provided in the embodiment of the terminal-based speed measurement method can be run on the terminal-based speed measurement device, and its specific implementation process can be found in the embodiment of the terminal-based speed measurement method, and will not be repeated here. .

It should be noted that, for the terminal-based speed measurement method of the present invention, ordinary testers in the field can understand that all or part of the process of implementing the terminal-based speed measurement method described in the embodiment of the present invention can be controlled by a computer program. hardware, the computer program can be stored in a computer-readable storage medium, such as stored in the memory of the terminal, and executed by at least one processor in the terminal, and the execution process can include as described A flow of an embodiment of a terminal-based speed measurement method. Wherein, the storage medium may be a magnetic disk, an optical disk, a read only memory (ROM, ReadOnlyMemory), a random access memory (RAM, RandomAccessMemory) and the like.

For the terminal-based speed measuring device in the embodiment of the present invention, its functional modules can be integrated into one processing chip, or each module can exist separately physically, or two or more modules can be integrated into one module . The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium, such as read-only memory, magnetic disk or optical disk, etc. .

The above is a detailed introduction of a terminal-based speed measurement method and device provided by the embodiment of the present invention. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only for helping understanding The method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood To limit the present invention.

Claims (10)

1. A method for measuring speed based on a terminal, comprising: When the terminal receives the speed measurement trigger instruction, according to the speed measurement trigger instruction, control and start the preset ranging sensor provided on the terminal; sending a first transmission signal to the object to be measured through the preset ranging sensor; When the terminal receives a speed measurement stop instruction, send a second transmission signal to the object to be measured through the preset ranging sensor; Based on the first transmission signal and the second transmission signal, the moving speed of the object to be measured is measured. 2. The terminal-based speed measuring method according to claim 1, characterized in that, after sending the first transmission signal to the object to be measured through the preset distance measuring sensor, further comprising: Obtaining a first reflected signal returned after the first transmitted signal is sent to the object to be measured; determining first time information based on the first transmitted signal and the first reflected signal; After the second transmission signal is sent to the object to be measured by the preset distance measuring sensor, the method further includes: Obtaining a second reflected signal returned after the second transmitted signal is sent to the object to be measured; Based on the second transmitted signal and the second reflected signal, second time information is determined. 3. The terminal-based speed measurement method according to claim 2, wherein, before measuring the moving speed of the object to be measured based on the first transmission signal and the second transmission signal, further include: The time difference between sending the first transmission signal to the object to be measured and the time difference between sending the second transmission signal to the object to be measured is recorded. 4. The terminal-based speed measurement method according to claim 3, wherein the measuring the moving speed of the object to be measured based on the first transmitted signal and the second transmitted signal comprises: determining the moving distance of the object to be measured based on the first time information and the second time information; The moving speed of the object to be measured is measured according to the moving distance and the time difference. 5. The terminal-based speed measuring method according to claim 1, characterized in that, after sending the second transmission signal to the object to be measured through the preset distance measuring sensor, further comprising: According to the speed measuring stop instruction, the control turns off the preset distance measuring sensor. 6. A terminal-based speed measuring device, characterized in that it comprises: The control unit is used to control and start the preset ranging sensor provided on the terminal according to the speed measurement trigger instruction when the terminal receives the speed measurement trigger instruction; A first sending unit, configured to send a first transmission signal to the object to be measured through the preset ranging sensor; The second sending unit is configured to send a second transmission signal to the object to be measured through the preset range sensor when the terminal receives a speed measurement stop instruction; A speed measurement unit, configured to measure the moving speed of the object to be measured based on the first transmission signal and the second transmission signal. 7. The terminal-based speed measurement device according to claim 6, wherein the device further comprises: a first acquiring unit, configured to acquire a first reflected signal returned after the first transmitted signal is sent to the object to be measured; a first determining unit, configured to determine first time information based on the first transmitted signal and the first reflected signal; a second acquiring unit, configured to acquire a second reflected signal returned after the second transmitted signal is sent to the object to be measured; A second determining unit, configured to determine second time information based on the second transmitted signal and the second reflected signal. 8. The terminal-based speed measuring device according to claim 7, wherein the device further comprises: The recording unit is configured to record the time difference between sending the first transmission signal to the object to be measured and the time difference between sending the second transmission signal to the object to be measured. 9. The terminal-based speed measurement device according to claim 8, wherein the speed measurement unit comprises: a distance determining subunit, configured to determine the moving distance of the object to be measured based on the first time information and the second time information; The speed measurement subunit is used to measure the moving speed of the object to be measured according to the moving distance and the time difference. 10. The terminal-based speed measurement device according to claim 6, wherein the control unit is further configured to control to turn off the preset distance measuring sensor according to the speed measurement stop instruction.