CN204832506U - Velometer based on mobile terminal control - Google Patents

Abstract

The utility model provides a speed measuring device controlled by a mobile terminal, including: a mobile terminal with a Bluetooth function and a speed measuring device, and the speed measuring device includes a microwave transceiver module, a frequency processing module, an operation module, a display module, a voice module, and a bluetooth module. The utility model provides a speed measuring instrument based on the control of the mobile terminal, which adopts the currently popular intelligent mobile terminal to control the speed measuring device, which can get rid of the limitation of distance and observation angle, realize remote control and observe data, and provide users with Bring great convenience.

Description

A Speed Meter Based on Mobile Terminal Control

technical field

The utility model relates to the field of electronic equipment, in particular to a speed measuring device controlled by a mobile terminal.

Background technique

The current velocimeters mainly include optical velocimeters and microwave velocimeters. Both of these two velocimeters are relative velocimeters, that is, they can only use the speed measuring head as a reference to detect the speed of the measured object relative to the probe head. The principle Yes: The probe continuously sends signals to the measured object, and the speed of the measured object relative to the probe can be calculated according to the frequency difference between the two signals and the propagation speed of the signal. But the speed can only be displayed on the display of the speedometer. If the screen is small or the viewing angle is different, the speed on the display will not be seen clearly after being away from the speedometer, which will cause inconvenience in reading.

Bluetooth (Bluetooth) is a radio technology that supports short-distance communication of devices, and can exchange information wirelessly among many devices including mobile phones, PDAs, wireless headsets, notebook computers, and related peripherals. Bluetooth technology supports point-to-point and point-to-multipoint communication. It works in the globally common 2.4GHz ISM (ie, industrial, scientific, and medical) frequency band. The maximum data rate is up to 3Mbps, and the time-division duplex transmission scheme is used to achieve full-duplex transmission. At present, devices using Bluetooth technology to communicate have spread across all walks of life.

Currently, smart mobile terminals are widely popularized, and basically all smart mobile terminals have a Bluetooth function. This brings possibility for the realization of the present application.

Utility model content

The purpose of this utility model is to provide a speed measuring instrument based on mobile terminal control, which solves one or more of the above-mentioned prior art.

The utility model provides a speed measuring device based on mobile terminal control, including: a mobile terminal with Bluetooth function and a speed measuring device, and the speed measuring device includes:

Microwave transceiver module, used to transmit microwave and recover microwave;

The frequency processing module is electrically connected with the microwave transceiver module, and is used to filter out the frequency of the amplified microwave;

The calculation module is electrically connected with the frequency processing module, and is used to calculate the Doppler frequency shift in each direction by using the detected microwave frequency, and output the speed information;

The display module is electrically connected with the computing module, and is used to display the moving speed of the current object;

The voice module is electrically connected with the computing module, and is used to broadcast voice information such as speed and system failure;

The bluetooth module is electrically connected with the computing module, and is used for wirelessly communicating with the mobile terminal with bluetooth function.

The utility model provides a speed measuring device based on the control of a mobile terminal, which uses the currently popular intelligent mobile terminal to control the speed measuring device, which can get rid of the limitations of distance and viewing angle and bring great convenience to users.

In some embodiments, the microwave transceiver module includes:

A transmitter module for transmitting microwaves;

Filtering module, used to filter out wrong microwave frequencies caused by objects blocking microwaves;

The receiver module is used to receive the returned echo.

Description of drawings

Fig. 1 is a module structure diagram of the speed measuring instrument of the present invention.

Detailed ways

The utility model is further described below: the utility model is based on a mobile terminal-controlled speedometer instrument, including: a mobile terminal with Bluetooth function and a speedometer, and the mobile terminal in this embodiment is a mobile phone.

As shown in FIG. 1 , the speedometer includes a microwave transceiver module 1 , a frequency processing module 2 , an arithmetic module 3 , a display module 4 , a voice module 5 , and a Bluetooth module 6 . The frequency processing module 2, the display module 4, the voice module 5 and the Bluetooth module 6 are all electrically connected to the computing module 3, and the frequency processing module 2 is also electrically connected to the microwave transceiver module 1, and the microwave transceiver module 1 includes a transmitter module 11, a filter module 12 and Receiver module 13.

The transmitter module 11 emits microwaves, and the microwaves are turned back when they encounter the measured object. The filter module 12 filters out the wrong microwave frequencies of other objects, and the receiver module 13 receives the turned-back microwaves. The frequency processing module 2 processes the turned-back microwave frequencies, and analyzes the The signal transmitted to the operation module 3, the operation module 3 calculates the speed, and transmits the signal to the display module 4, the display module 4 displays the current speed, and the voice module 5 broadcasts the current speed at the same time, and the operation module 3 transmits the speed information to the computer through the Bluetooth module 6. Mobile terminal with bluetooth function.

In addition, through the smart phone with bluetooth function, there is an APP application installed on the mobile phone (since the APP involves the software part, which will not be described in detail here), when the APP application sends out an instruction to start the speedometer, the Bluetooth module in the mobile phone transmits the signal to the Bluetooth module 6 in the speedometer, the Bluetooth module 6 transmits the signal to the computing module 3, and the computing module 3 controls the microwave transceiver module 1 to work.

The speed measurement principle of the speedometer: During each measurement process, the transmitter module in the microwave transceiver module emits continuous microwave signals. When a moving object enters the measurement interval, the reflected microwave returns to the receiver module, and the signal is processed by the difference frequency. The input frequency processing module; the frequency processing module further filters and amplifies the signal and sends the signal to the operation module; the operation module calculates the absolute speed of the measured target through the corresponding frequency.

It should be pointed out that the mobile terminal in the present invention is not only a mobile phone, but also a smart digital device such as a tablet computer, all of which are within the scope of protection of the present invention.

The utility model provides a speed measuring device based on the control of a mobile terminal, which uses the currently popular intelligent mobile terminal to control the speed measuring device, which can get rid of the limitations of distance and viewing angle and bring great convenience to users.

Claims (2)

1. based on the velometer that mobile terminal controls, it is characterized in that, comprising: the mobile terminal of band Bluetooth function and velometer, described velometer comprises:

Microwave transceiver module (1), for launched microwave and recovery microwave;

Frequency processing module (2), is electrically connected with described microwave transceiver module (1), for filtering clutter and the microwave signal of amplifying acceptance;

Computing module (3), is electrically connected with described frequency processing module (2), for utilizing the microwave frequency detected to calculate each to Doppler shift, and output speed information;

Display module (4), is electrically connected with described computing module (3), for showing the translational speed of current object;

Voice module (5), is electrically connected with described computing module (3), for reporting present speed and the system failure;

Bluetooth module (6), is electrically connected with described computing module (3), for wirelessly communicating with between the mobile terminal of band Bluetooth function.

2. a kind of velometer controlled based on mobile terminal according to claim 1, it is characterized in that, described microwave transceiver module (1) comprising:

Transmitter module (11), for launched microwave;

Filtration module (12), for filtering because of object blocking microwave the microwave frequency that leads to errors;

Receiver module (13), for receiving the echo returned.