CN101975868B - Velocity measurement system of track bicycle - Google Patents
Velocity measurement system of track bicycle Download PDFInfo
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- CN101975868B CN101975868B CN2010102642777A CN201010264277A CN101975868B CN 101975868 B CN101975868 B CN 101975868B CN 2010102642777 A CN2010102642777 A CN 2010102642777A CN 201010264277 A CN201010264277 A CN 201010264277A CN 101975868 B CN101975868 B CN 101975868B
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Abstract
The invention discloses a velocity measurement system of a track bicycle, consisting of a signal detection circuit, a power circuit, a main controller, a voltage regulation circuit, a wireless communication module and a memory module. The processing procedure comprises the steps that the signal detection circuit acquires signals generated by movement of a chain and performs the primary process on the signal; and the main controller can save the parameters such as the velocity and the like, and can control the wireless communication module to send the parameters to the user upper computer so as to finish the real time monitoring of the velocity of the track bicycle through the further analyzing of the processed signals. The velocity measurement system can send and save the data in real time without the need of transforming the bicycle body, save the use cost, and is suitable for masses of users.
Description
Technical field
The present invention relates to a kind of Track Cycling velocity measuring system.
Background technology
The bicycle speed measurement products is different according to technology and implementation; Mainly contain dual mode: first kind of mode is that mechanical type tests the speed; Mainly utilize mechanical counter; Wheel turns around and adds a numeral with regard to flip-flop number, and this mechanical type is used more on bicycle, but its measuring accuracy is lower; The second way is that electronic type tests the speed, and mainly is to obtain electronic impulse through sensor, thus the speed of calculating; But generally all need transform car body; Not only car body has been caused certain damage, and cost is too high, simply utilizes the electronic impulse computing velocity to have certain limitation simultaneously.So a kind of novel Track Cycling velocity measuring system is badly in need of being developed.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of system that utilizes Hall element to carry out the Track Cycling velocity survey.The present invention adopts technological means following:
A kind of Track Cycling velocity measuring device is characterized in that comprising signal detection circuit, power circuit, master controller, voltage-regulating circuit, wireless communication module and memory module;
Said signal detection circuit comprises Hall element, magnet and signal processing unit; Said signal detection circuit is arranged on the bicycle chain transmission plane; And Hall element is between magnet and bicycle chain; Be used for induced magnet with the magnetic force signal between the bicycle chain, the sinusoidal wave signal that said signal processing unit is passed Hall element back is converted into square-wave signal;
Said master controller receives the signal detection circuit square-wave signal through the ECT mouth, and calculates the speed of bicycle, the distance of going according to the relation of number of cycles and bicycle running distance;
Said memory module is used to store the speed of above-mentioned bicycle, the distance of going and the data of current time spent;
Said wireless communication module be used for the speed of above-mentioned bicycle, the distance of going and and the current time spent reach host computer;
Said voltage-regulating circuit is connected with power circuit provides power supply for whole device;
The I/O mouth of said signal detection circuit is connected with master controller ECT mouth, and said master controller is connected with memory module with wireless communication module respectively.
The controller of said master controller is the MC9S12 single-chip microcomputer.
The core devices of said signal detection circuit is a Hall element.
Said voltage-regulating circuit comprises voltage adjustment chip and holding circuit.
A kind of measuring method of above-mentioned measurement mechanism is characterized in that comprising the steps:
The first step: collect the sinusoidal signal that the bicycle chain motion produces through the Hall element in the signal detection circuit, and convert it into square-wave signal;
Second step:, make it get into the preliminary work state through the I/O mouth wireless-enabled communication module of master controller;
The 3rd step: master controller receives square-wave signal, through the ECT mouth square-wave signal is caught;
The 4th step: master controller is analyzed, is handled the square-wave signal that collects then; Cycle size according to collecting sinusoidal signal at first is corresponding with the speed of bicycle, and number of cycles is corresponding with the distance of going of bicycle, the cycle size of square-wave signal is analyzed, to calculate the travel speed of Track Cycling current time; Through analyzing the number of cycles of square-wave signal, reach the distance that present speed was gone to calculate Track Cycling;
The 5th step: the speed that master controller obtains analysis, distance and current time spent send the memory module storage to;
The 6th step: the speed that the main controller controls wireless communication module obtains analysis, distance and current time spent reach host computer.
The said first step also comprises carries out analog filtering to signal, and filtering is attached to a large amount of interference in the signal; Filtered signal is carried out rough handling, with the DC component filtering in the simulating signal that collects; And the simulating signal of elimination DC component amplified, adopted the method for zero balancing to convert it into the step of square-wave signal.
It is conspicuous being specially that the present invention compares its advantage with prior art: simulating signal is gathered through signal detection circuit by this system, has improved the realizability of speed acquisition under some situation greatly; Can store, can transmit data through wireless communication module again, make it real-time monitoring bicycle speed; Need not to transform car body and also can obtain degree of precision, saved use cost simultaneously again, be fit to users and use.
Description of drawings
Fig. 1 is a system chart of the present invention;
Fig. 2 is the circuit diagram of master controller;
Fig. 3 is the circuit diagram of signal detection circuit;
Fig. 4 is the circuit diagram of voltage-regulating circuit;
Fig. 5 is the master control program process flow diagram;
Fig. 6 is the signal detection circuit principle schematic;
Fig. 7 is the synoptic diagram of analytic signal.
Embodiment
To shown in Figure 4, a kind of Track Cycling velocity measuring device comprises signal detection circuit 2, power circuit 3, master controller 4, voltage-regulating circuit 5, wireless communication module 6 and memory module 7 like Fig. 1; Said signal detection circuit 2 comprises Hall element 602, magnet 601 and signal processing unit; Said signal detection circuit 2 is arranged on the bicycle chain 603 transmission planes; And Hall element 602 is between magnet 601 and bicycle chain 603; And fix through fixed mechanism 1 and (can it be fixed through nut and set collar; Also can it be fixed, realize that owing to similar the fixed form of said fixing function all is the commonly used and known fixed forms of those skilled in the art, here so just do not describe one by one through geometrical clamp.); Because the junction of bicycle chain 603 is full ferrous material; There is not ferrous material at portion other than connected portion; So utilizing the magneticaction of 601 pairs of bicycle chain 603 junctions of magnet is that Hall element 602 inductions produce a type sinusoidal signal (as shown in Figure 6), the sinusoidal wave signal that said signal processing unit is passed Hall element back is converted into square-wave signal (processing procedure is as shown in Figure 7); Said master controller 4 receives signal detection circuit 2 square-wave signals through the ECT mouth, and calculates the speed of bicycle, the distance of going according to the relation of number of cycles and bicycle running distance; Said memory module 7 is used to store the speed of above-mentioned bicycle, the distance of going and the data of current time spent; Said wireless communication module 6 be used for the speed of above-mentioned bicycle, the distance of going and and the current time spent reach host computer; Said voltage-regulating circuit 5 is connected with power circuit 3 provides power supply for whole device; The I/O mouth of said signal detection circuit 2 is connected with master controller 4ECT mouth, and said master controller 4 is connected with memory module 7 with wireless communication module 6 respectively.Wherein signal processing unit is to have the integrated circuit that the class sinusoidal signal is carried out filtering, amplifies and is translated into square-wave signal; Master controller 4 is provided with the microprocessor with logical process ability (as: processors such as single-chip microcomputer, MCU, ARM, present embodiment adopt its circuit structure of MC9S12 single-chip microcomputer as shown in Figure 2) of master control program in being.
For further specifying the principle of work of this device; The spy describes as follows: the ECT mouth of master controller 4 as shown in Figure 2 is connected with the I/O mouth of signal detection circuit 2 shown in Figure 3; Be used to receive the signal that chain movement produces; This signal is a kind of periodic square-wave signal that has, and the movement velocity of chain is fast more, and type sinusoidal signal cycle is short more; The movement velocity of opposite chain is slow more, and type sinusoidal signal cycle is long more, i.e. the inversely proportional relation of cycle of the movement velocity of chain and type sinusoidal signal, and this just provides good basis for the velocity survey of bicycle power.When bicycle generation power speed is chain movement; Signal detection circuit 2 receives the sinusoidal signal that chain movement produces; The I/O of signal detection circuit 2 is connected with the ECT mouth of master controller shown in Figure 24, and signal detection circuit 2 sends signal data in the ECT mouth of master controller 4.4 pairs of data that receive of master controller are further analyzed and are handled, and the I/O mouth of master controller 4 is connected with memory module 7, and the data that master controller 4 will be analyzed gained send memory module 7 to, by memory module 7 storages.The serial communication interface of master controller 4 is connected with the I/O mouth of wireless communication module 6, and the data that master controller 4 will be analyzed gained send wireless communication module 6 to, by wireless communication module 6 these data are sent to host computer.Power circuit 3 as shown in Figure 4 provides constant voltage dc source for system's each several part; General supply adopts the powered battery of 7.2V; In the voltage-regulating circuit 5 with holding circuit protection system power supply; Use voltage adjustment chip that the 7.2V voltage transitions of battery is 5V voltage, in order to give master controller 4, signal detection circuit 2, wireless communication module 6 power supplies.
As shown in Figure 5, the method for work of described Track Cycling velocity measuring system is: signal detection circuit 2 is gathered the chain movement signal of car body, after analyzing, passes to master controller 4, and 4 pairs of signals of master controller are analyzed and handled.Concrete steps are:
The first step: signal detection circuit 2 collects the sinusoidal signal that chain movement produces.
Second step: signal is carried out analog filtering, and filtering is attached to a large amount of interference in the signal.
The 3rd step: filtered signal is carried out rough handling, with the DC component filtering in the simulating signal that collects.
The 4th step: the simulating signal of elimination DC component is amplified, adopted the method for zero balancing to convert it into square-wave signal.
The 5th step:, make it get into the preliminary work state through the I/O mouth wireless-enabled communication module 6 of master controller 4.
The 6th step: master controller 4 receives square-wave signal, through the ECT mouth square-wave signal is caught.
The 7th step: the square-wave signal to collecting is analyzed, is handled.Because the signal that collects at first is a sinusoidal signal, the cycle size of sinusoidal signal is corresponding with the speed of bicycle, and number of cycles is corresponding with the distance of going of bicycle.Because, on the cycle, have consistance by the resulting square-wave signal of sinusoidal signal.So,, can calculate the travel speed of Track Cycling current time through analyzing the cycle size of square-wave signal; Through analyzing the number of cycles of square-wave signal, can calculate Track Cycling and reach the distance that present speed went.
The 8th step: the speed that master controller 4 obtains analysis, distance and current time spent send memory module 7 storages to.
The 9th step: speed, distance and current time spent that master controller 4 control wireless communication modules 6 obtain analysis reach host computer.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (6)
1. a Track Cycling velocity measuring device is characterized in that comprising signal detection circuit (2), power circuit (3), master controller (4), voltage-regulating circuit (5), wireless communication module (6) and memory module (7);
Said signal detection circuit (2) comprises Hall element, magnet and signal processing unit; Said signal detection circuit (2) is arranged on the bicycle chain transmission plane; And Hall element is between magnet and bicycle chain; Induced magnet is to the magneticaction of bicycle chain junction, and a generation type sinusoidal signal, the sinusoidal wave signal that said signal processing unit is passed Hall element back is converted into square-wave signal;
Said master controller (4) receives signal detection circuit (2) square-wave signal through the ECT mouth, and calculates the speed of bicycle, the distance of going according to the relation of number of cycles and bicycle running distance;
Said memory module (7) is used to store the speed of above-mentioned bicycle, the distance of going and the data of current time spent;
Said wireless communication module (6) is used for the speed of above-mentioned bicycle, the distance of going and current time spent are reached host computer;
The same power circuit of said voltage-regulating circuit (5) (3) is connected provides power supply for whole device;
The same master controller of I/O mouth (4) the ECT mouth of said signal detection circuit (2) is connected, and said master controller (4) is connected with memory module (7) with wireless communication module (6) respectively.
2. measurement mechanism according to claim 1, the controller that it is characterized in that said master controller (4) is the MC9S12 single-chip microcomputer.
3. measurement mechanism according to claim 1 is characterized in that the core devices of said signal detection circuit (2) is a Hall element.
4. measurement mechanism according to claim 1 is characterized in that said voltage-regulating circuit (5) comprises voltage adjustment chip and holding circuit.
5. the measuring method according to the said measurement mechanism of claim 1 is characterized in that comprising the steps:
The first step: collect the sinusoidal signal that the bicycle chain motion produces through the Hall element in the signal detection circuit (2), and convert it into square-wave signal;
Second step:, make it get into the preliminary work state through the I/O mouth wireless-enabled communication module (6) of master controller (4);
The 3rd step: master controller (4) receives square-wave signal, through the ECT mouth square-wave signal is caught;
The 4th step: master controller (4) is analyzed, is handled the square-wave signal that collects then; Cycle size according to collecting sinusoidal signal at first is corresponding with the speed of bicycle, and number of cycles is corresponding with the distance of going of bicycle, the cycle size of square-wave signal is analyzed, to calculate the travel speed of Track Cycling current time; Through analyzing the number of cycles of square-wave signal, reach the distance that present speed was gone to calculate Track Cycling;
The 5th step: the speed that master controller (4) obtains analysis, distance and current time spent send memory module (7) storage to;
The 6th step: speed, distance and current time spent that master controller (4) control wireless communication module (6) obtains analysis reach host computer.
6. measuring method according to claim 5, it is characterized in that the said first step also comprises carries out analog filtering to signal, and filtering is attached to a large amount of interference in the signal; Filtered signal is carried out rough handling, with the DC component filtering in the simulating signal that collects; And the simulating signal of elimination DC component amplified, adopted the method for zero balancing to convert it into the step of square-wave signal.
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| CN2010102642777A CN101975868B (en) | 2010-08-23 | 2010-08-23 | Velocity measurement system of track bicycle |
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| CN2010102642777A CN101975868B (en) | 2010-08-23 | 2010-08-23 | Velocity measurement system of track bicycle |
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| CN101975868A CN101975868A (en) | 2011-02-16 |
| CN101975868B true CN101975868B (en) | 2012-07-11 |
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| CN105989636A (en) * | 2015-02-11 | 2016-10-05 | 深圳市海豚智能车科技有限公司 | Method and device for bicycling information feedback and intelligent bicycle |
| TWI586574B (en) * | 2015-05-13 | 2017-06-11 | 財團法人成大研究發展基金會 | Power and resistance coefficient measurement method of bike |
| CN105196790A (en) * | 2015-07-17 | 2015-12-30 | 柒佰（北京）科技发展有限公司 | Bicycle electricity-generating flower drum capable of measuring speed |
| CN105891532B (en) * | 2016-04-07 | 2019-11-08 | 河南师范大学 | A kind of electric bicycle current mode speed-measuring method and speed measuring device |
| CN105911305B (en) * | 2016-04-07 | 2019-11-08 | 河南师范大学 | A kind of electric bicycle voltage-type speed-measuring method and speed measuring device |
| CN105866463B (en) * | 2016-04-07 | 2019-11-22 | 河南师范大学 | A kind of electric bicycle voltage-type dimensionality reduction speed-measuring method and speed measuring device |
| CN105891534A (en) * | 2016-04-08 | 2016-08-24 | 成都晨电智能科技有限公司 | Bicycle velocity measurement system and method |
| CN106248985B (en) * | 2016-07-25 | 2019-06-18 | 河南师范大学 | A kind of electric bicycle voltage-type vehicle speed measurement method and measuring device |
| CN106248984B (en) * | 2016-07-25 | 2019-06-07 | 河南师范大学 | A kind of driving motor is the electric bicycle current mode vehicle speed measurement method and measuring device of permanent magnet synchronous motor |
| WO2018058504A1 (en) * | 2016-09-30 | 2018-04-05 | 深圳博芯科技股份有限公司 | 2.4ghz wireless code table circuit |
| CN106580574A (en) * | 2016-12-21 | 2017-04-26 | 深圳凯达通光电科技有限公司 | Intelligent medical wheelchair |
| CN108771855B (en) * | 2018-06-04 | 2020-04-17 | 国家体育总局体育科学研究所 | System and method for timing and speed measuring of field bicycles in sections |
| CN111596086B (en) * | 2020-05-15 | 2022-10-11 | 北京百度网讯科技有限公司 | Method and device for estimating speed of obstacle in automatic driving and electronic equipment |
| CN111693724A (en) * | 2020-05-25 | 2020-09-22 | 五邑大学 | Vehicle speed detection system, vehicle speed detection method and computer readable storage medium |
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