CN101819268A - Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement - Google Patents
Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement Download PDFInfo
- Publication number
- CN101819268A CN101819268A CN 201010175971 CN201010175971A CN101819268A CN 101819268 A CN101819268 A CN 101819268A CN 201010175971 CN201010175971 CN 201010175971 CN 201010175971 A CN201010175971 A CN 201010175971A CN 101819268 A CN101819268 A CN 101819268A
- Authority
- CN
- China
- Prior art keywords
- chip
- time measurement
- signal
- radio
- wave filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a main unit of a positioning device based on radio-frequency signal flight time measurement, which comprises a transmitting chip, a CPU, a receiving chip and a time measurement chip, wherein the emission chip is connected with a transmitting antenna through an RF switch, a coupler and a filter, and signals sent by the transmitting chip are transmitted to the time measurement chip by the filter; the receiving chip is connected with a receiving antenna through the coupler and the filter, and signals of the receiving antenna are transmitted to the time measurement chip by a frequency conversion filtering module after passing through the coupler and are compared with the transmitting signals; and the time measurement chip is connected with the CPU. A radio frequency (RF)signal has very strong penetrability and is a widely applied standard RF frequency range. Aiming to the defects of the prior art, the invention adopts the time measurement chip to measure the flight time of the RF signal and can obtain the distance data by multiplying by propagation speed of an electric wave signal in air. By adopting the RF signal, the invention can penetrate obstacles and can be more conveniently used compared with adopting the traditional ultrasonic signal.
Description
Technical field
The present invention relates to a kind of locating device based on the 2.4Ghz radio-frequency signal flight time measurement.
Background technology
The existing robots localization method generally adopts the triangle location, is illustrated in fig. 1 shown below.
Because reference edge L3 is a fixed length,, just can accurately calculate robot with respect to the distance D of want localizing objects with towards angle θ as long as can determine the length of L1, L2.
Key point in the robot triangle location technology is to measure the length of L1 and L2 accurately.Present measuring method has the flight time based on ultrasonic signal, measures the ultrasound wave elapsed time of wanting that flies from A to C and from B to C, multiply by the aerial velocity of propagation of ultrasound wave (340m/s) again, can calculate the length of L1 and L2.This technology has very big restriction because the limitation of ultrasonic signal for example can't penetrate some objects such as human body, wall in the application scenario, during application, must spaciously not have between some A, B and the some C and block, and just can accurately locate.
Summary of the invention
The purpose of this invention is to provide a kind of locating device, solve prior art and adopt ultrasonic signal can't penetrate the problem of barriers such as human body, wall based on the 2.4Ghz radio-frequency signal flight time measurement.
The objective of the invention is to be achieved through the following technical solutions:
Locating device main frame based on the 2.4Ghz radio-frequency signal flight time measurement, comprise transmitting chip, CPU, receiving chip and time measurement chip TDC-GP2, described transmitting chip is connected with emitting antenna by radio-frequency (RF) switch, coupling mechanism, wave filter, and the signal that is sent by transmitting chip sends the time measurement chip to by wave filter; Described receiving chip is connected with receiving antenna through coupling mechanism, wave filter, and the signal of described receiving antenna sends the time measurement chip to by the frequency conversion filtration module after passing through coupling mechanism, and compares with transmitting; Described time measurement chip is connected with CPU.
The hand-held device that is used with described main frame, comprise emitting antenna, receiving antenna and CPU, the signal that described receiving antenna receives is successively through arriving emitting antenna behind wave filter, device amplification, mixing change, wave filter, amplifier, frequency mixer, wave filter, amplifier, the wave filter, connect by phase-locked loop PLL between two frequency mixer, and be connected to the CPU processing by the phase-locked loop.
Radio frequency signal has very strong penetrability, and is a standard radio frequency frequency range of widespread use.
This patent has used TDC-GP2 time measurement chip at the shortcoming of prior art, the flight time of measuring the 2.4Ghz radiofrequency signal, multiply by the aerial velocity of propagation of electric wave signal (299792458m/s), and can obtain range data.Owing to adopt radiofrequency signal, can penetrate barrier, use more more convenient than traditional ultrasonic signal.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is a triangle positioned detection synoptic diagram;
Fig. 2 is based on the structural representation of the locating device main frame of 2.4Ghz radio-frequency signal flight time measurement;
Fig. 3 is the structural representation of hand-held device;
Embodiment
As Figure 1-3, locating device main frame based on the 2.4Ghz radio-frequency signal flight time measurement, comprise transmitting chip, CPU, receiving chip and time measurement chip TDC-GP2, described transmitting chip is connected with emitting antenna by radio-frequency (RF) switch, coupling mechanism, wave filter, and the signal that is sent by transmitting chip sends the time measurement chip to by wave filter; Described receiving chip is connected with receiving antenna through coupling mechanism, wave filter, and the signal of described receiving antenna sends the time measurement chip to by the frequency conversion filtration module after passing through coupling mechanism, and compares with transmitting; Described time measurement chip is connected with CPU.
The hand-held device of corresponding described main frame, comprise emitting antenna, receiving antenna and CPU, the signal that described receiving antenna receives is successively through arriving emitting antenna behind wave filter, device amplification, mixing change, wave filter, amplifier, frequency mixer, wave filter, amplifier, the wave filter, connect by phase-locked loop PLL between two frequency mixer, and be connected to the CPU processing by the phase-locked loop.
2.4Ghz radio frequency signal has very strong penetrability, and is a standard radio frequency frequency range of widespread use.This patent is at the shortcoming of prior art, used TDC-GP2 time measurement chip, come the flight time of 2.4Ghz radiofrequency signal between A, C and B, C, multiply by the aerial velocity of propagation of electric wave signal (299792458m/s), can calculate the length of L1 and L2.
Claims (2)
1. based on the locating device main frame of radio-frequency signal flight time measurement, comprise transmitting chip, CPU, receiving chip and time measurement chip, it is characterized in that, described transmitting chip is connected with emitting antenna by radio-frequency (RF) switch, coupling mechanism, wave filter, and the signal that is sent by transmitting chip sends the time measurement chip to by wave filter; Described receiving chip is connected with receiving antenna through coupling mechanism, wave filter, and the signal of described receiving antenna sends the time measurement chip to by the frequency conversion filtration module after passing through coupling mechanism, and compares with transmitting; Described time measurement chip is connected with CPU.
One kind with the described hand-held device that is used based on the locating device main frame of radio-frequency signal flight time measurement of claim 1, comprise emitting antenna, receiving antenna and CPU, it is characterized in that, the signal that described receiving antenna receives is successively through arriving emitting antenna behind wave filter, device amplification, mixing change, wave filter, amplifier, frequency mixer, wave filter, amplifier, the wave filter, connect by phase-locked loop PLL between two frequency mixer, and be connected to the CPU processing by the phase-locked loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175971 CN101819268A (en) | 2010-05-19 | 2010-05-19 | Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010175971 CN101819268A (en) | 2010-05-19 | 2010-05-19 | Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101819268A true CN101819268A (en) | 2010-09-01 |
Family
ID=42654436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010175971 Pending CN101819268A (en) | 2010-05-19 | 2010-05-19 | Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101819268A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379861A (en) * | 1999-07-12 | 2002-11-13 | 鹰眼公司 | Fast acquisition position reporting system |
| CN2800292Y (en) * | 2003-12-22 | 2006-07-26 | 李剑 | Terminal client for BeiDou navigation positioning system |
| CN201681155U (en) * | 2010-05-19 | 2010-12-22 | 无锡鑫立奥机电有限公司 | Positioning device host computer based on RF signal flying time measurement and handheld device |
-
2010
- 2010-05-19 CN CN 201010175971 patent/CN101819268A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1379861A (en) * | 1999-07-12 | 2002-11-13 | 鹰眼公司 | Fast acquisition position reporting system |
| CN2800292Y (en) * | 2003-12-22 | 2006-07-26 | 李剑 | Terminal client for BeiDou navigation positioning system |
| CN201681155U (en) * | 2010-05-19 | 2010-12-22 | 无锡鑫立奥机电有限公司 | Positioning device host computer based on RF signal flying time measurement and handheld device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103308934B (en) | Method for positioning indoor moving persons by aid of WIFI (wireless fidelity) reflected signals | |
| WO2007136419A3 (en) | Methods and system for reduced attenuation in tracking objects using rf technology | |
| CN201383004Y (en) | Intelligent radar for detecting traffic vehicles | |
| CN201681155U (en) | Positioning device host computer based on RF signal flying time measurement and handheld device | |
| CN106405491A (en) | Unmanned plane monitoring system based on software radio | |
| CN104076362B (en) | A kind of railroad train runs security radar | |
| CN105005022A (en) | Multimode indoor positioning method and device based on radio frequency and ultrasonic wave | |
| CN102202258A (en) | Mobile phone positioning system and positioning method thereof | |
| CN102565452B (en) | Novel microwave radar ultra-thin water flow determination sensor | |
| CN103901425B (en) | A kind of radar and method for measuring moving object lateral velocity | |
| CN105136905A (en) | Space-time four-dimensional wideband array-based high speed steel rail ultrasonic detection imaging method and apparatus thereof | |
| CN102788845A (en) | Barker coding excitation ultrasonic detection method of concrete structure defect | |
| CN103454643B (en) | Method for accurately measuring constant sound pressure FSK ultrasonic wave transition time | |
| CN103777073B (en) | Wide-band excitation SAW device resonant frequency measurement apparatus and method | |
| CN104407352A (en) | Infrared ranging system adopting pulse counting | |
| CN110927252B (en) | Targeted shear wave elastography detection method | |
| CN105116371A (en) | Target positioning method and apparatus based on continuous emitting frequency modulation signals | |
| CN209927773U (en) | Urea concentration detection device based on CAN communication | |
| CN108535695A (en) | Mobile platform positioning device and method based on ultrasound | |
| CN101819268A (en) | Main unit and handheld device of positioning device based on radio-frequency signal flight time measurement | |
| CN210323343U (en) | Ultrashort wave binary channels broadband direction finding system | |
| CN203643616U (en) | Monitoring device with close distance positioning and GPS positioning functions | |
| CN106388773A (en) | Millimeter-wave radar sensor | |
| CN105223556B (en) | L-type receives and dispatches array antenna front end and its signal processing method | |
| CN105411627B (en) | A kind of device and method measuring blood flow lateral velocity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100901 |