CN107933810A - Electric bicycle - Google Patents

Abstract

The present invention relates to electric bicycle equipment technical field, more particularly to a kind of electric bicycle, it includes electric car body, motor, controller, the first infrared sensor, the second infrared sensor, speech recognition device and alarm；First infrared sensor and the second infrared sensor are separately mounted to the head end and tail end of electric car body；The front of the end of probe face electric car body of first infrared sensor；The dead astern of the end of probe face electric car body of second infrared sensor；First infrared sensor, the second infrared sensor and speech recognition device are electrically connected with the controller, and controller is also electrically connected with motor and alarm respectively, and speech recognition device and alarm are installed in the front end of electric car body；Start button and stop button are installed, start button and stop button are electrically connected with the controller on electric car body.Above-mentioned electric bicycle degree of intelligence is higher, and security performance is preferable, also has more hommization, highly practical technical advantage.

Description

electric bicycle

technical field

The invention relates to the technical field of electric bicycle equipment, in particular to an electric bicycle.

Background technique

Electric bicycles have become a very common means of transportation because of their small size and electric drive.

At present, there is an electric bicycle with automatic cruise function. After the rider continues to drive at a certain speed for a period of time, he will place the handlebar freely, and the electric bicycle can still continue to drive at the original speed; When the distance of the vehicle is relatively short, the speed cannot be automatically adjusted, and the brakes or handlebars can only be manually manipulated to adapt to the surrounding environment. The intelligence is low and it is inconvenient to use.

To sum up, how to overcome the above-mentioned defects of the existing electric bicycles is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide an electric bicycle to alleviate the technical problems of low intelligence and inconvenient use of the electric bicycle in the prior art.

The electric bicycle provided by the present invention includes an electric bicycle body, a motor, a controller, a first infrared sensor, a second infrared sensor, a speech recognizer and an alarm.

Wherein, the first infrared sensor and the second infrared sensor are respectively installed at the head end and the tail end of the electric vehicle body; the detection end of the first infrared sensor is directly in front of the electric vehicle body, and It is used to detect the distance between the electric vehicle body and the obstacle in front; the detection end of the second infrared sensor is directly behind the electric vehicle body, and is used to detect the distance between the electric vehicle body and the rear vehicle; the second infrared sensor An infrared sensor, the second infrared sensor and the speech recognizer are all electrically connected to the controller, and the controller is also electrically connected to the motor and the alarm respectively, and the speech recognizer and the speech recognizer are electrically connected to each other. The alarms are all installed on the front end of the electric car body.

A start button and a stop button are installed on the electric vehicle body, and both the start button and the stop button are electrically connected with the controller.

Preferably, as an implementable manner, the alarm includes a voice broadcast module, the voice broadcast module is electrically connected to the controller, and the voice broadcast module can broadcast the action that the controller will make.

Preferably, as an implementable manner, the alarm includes a deceleration warning light, an acceleration warning light and a brake warning light, and the deceleration warning light, the acceleration warning light and the brake warning light are all connected with the controller Electrically connected; the deceleration warning light is lit when the controller sends a deceleration signal, the acceleration warning light is lit when the controller sends an acceleration signal, and the brake warning light is lit when the controller sends a brake signal lights up.

Preferably, as an implementable manner, the deceleration warning light, the acceleration warning light and the brake warning light are all LED lights.

Preferably, as an implementable manner, the alarm includes a warning light, the warning light is a color-changing light, and the warning light is electrically connected to the controller; The signal is green, the warning light is yellow when the controller sends an acceleration signal, and the warning light is red when the controller sends a brake signal.

Preferably, as an implementable manner, the warning light is an LED light.

Preferably, as an implementable manner, the electric bicycle further includes two casings, the two casings are respectively fixed at the front and rear ends of the electric vehicle body, and the first infrared sensor and the The second infrared sensors are respectively located in the two casings.

The part of the housing corresponding to the first infrared sensor facing the detection end of the first infrared sensor is transparent, and the housing corresponding to the second infrared sensor is facing the second infrared sensor The part of the detection end is a transparent structure.

Preferably, as a possible implementation manner, both of the housings are detachably connected to the electric vehicle body.

Preferably, as an implementation manner, the first infrared sensor, the second infrared sensor and the alarm are all electrically connected to the storage battery on the electric vehicle body.

Preferably, as an implementable manner, both the start button and the stop button are installed on the handlebar of the electric vehicle body; the speech recognizer is installed on the handlebar of the electric vehicle body.

Compared with prior art, the beneficial effect of the present invention is:

The structure of the electric bicycle provided by the present invention is analyzed as follows: the above-mentioned electric bicycle is mainly composed of an electric vehicle body, a motor, a controller, a first infrared sensor, a second infrared sensor, a speech recognizer, an alarm, and Composition of start button and stop button.

Analysis of the specific connection mode and positional relationship of the above structure shows that: the first infrared sensor is installed on the head end of the electric vehicle body and is electrically connected with the controller, so that when a certain distance in front of the electric vehicle (this distance is determined by the effective distance of the first infrared sensor) ) when there is an obstacle (such as a vehicle), the first infrared sensor can detect the distance between the electric vehicle body and the obstacle in front in real time, and transmit the detected distance signal to the controller in real time, and the controller performs a analysis, and then obtain the speed of the obstacle in front; because the controller is also electrically connected to the alarm, if the speed of the obstacle in front is lower than the speed of the electric vehicle, the controller can send a deceleration signal to the alarm, and the alarm receives the deceleration signal. After the signal, a deceleration alarm signal is sent out. At the same time, the voice recognizer connected to the controller is turned on. After the rider receives the deceleration alarm signal sent by the alarm, if he agrees to the controller to perform the next step, he will say "agree" to the voice recognizer. If you do not agree with the controller to perform the next step, just say "disagree" to the voice recognizer. The specific voice signal can be set freely, and is not limited to the above words; When agreeing to execute the command of the next step, stop the next step and enter the standby state. When the controller receives the command of agreeing to execute the next step, it sends a deceleration signal to the motor, so that the driving speed of the electric vehicle is consistent with the driving speed of the obstacle ahead. The speed is the same, preventing collisions, which is very convenient. In addition, when the first infrared sensor detects that the distance between the obstacle in front and the electric vehicle is too small, the controller can send an emergency braking signal to the alarm, and the alarm will send an emergency braking alarm signal after receiving the emergency braking signal, and then the controller will Directly control the motor to stop, prevent collision and ensure safety.

The second infrared sensor is installed on the tail end of the electric vehicle body and is electrically connected with the controller, so that when a vehicle appears within a certain distance behind the electric vehicle (the distance is determined by the effective distance of the second infrared sensor), the second infrared sensor can real-time Detect the distance between the electric vehicle body and the rear vehicle, and transmit the detected distance signal to the controller in real time. The controller analyzes the signal, and then obtains the speed of the rear vehicle; because the controller also communicates with the alarm Electrical connection, so that when the speed of the vehicle behind is greater than the speed of the electric vehicle, the controller can send an acceleration signal to the alarm, and the alarm will send an acceleration alarm signal after receiving the acceleration signal. At the same time, the voice recognizer connected to the controller is turned on. After receiving the acceleration alarm signal from the alarm, the rider can say "agree" to the voice recognizer when the controller performs the next operation if he agrees. Just say "disagree", and the specific voice signal can be set freely, not limited to the above words; when the controller receives the command that does not agree to execute the next step, it will stop the next step, enter the standby state, and control When the controller receives an order to agree to perform the next operation, it sends an acceleration signal to the motor, so that the driving speed of the electric vehicle is the same as that of the vehicle behind, preventing collisions, which is very convenient.

In order to make the electric bicycle more humanized, a start button and a stop button are arranged on the electric vehicle body, and the start button and the stop button are electrically connected to the controller, and the first infrared sensor and the second infrared sensor can be activated by pressing the start button , so as to achieve the purpose of starting the whole set of intelligent control system. When the intelligent control is not needed, the stop button can be pressed to stop the work of the first infrared sensor and the second infrared sensor, and the rider can completely operate the electric bicycle by himself.

It should be noted that both hands of the cyclist are occupied when riding, and the voice recognizer is used for the cyclist to issue commands, which will not occupy the hands of the cyclist, which is safer and more convenient; in addition, the voice recognizer is installed on the electric vehicle body The front end of the electric vehicle can facilitate the rider to provide instructions to the voice recognizer while riding, and install the alarm on the front end of the electric vehicle body, which has strong visibility and audibility. Riders can freely choose whether to control the motor by the controller according to the road conditions, which is very practical. Compared with pure manual braking, the automatic braking function of the electric bicycle provided by the invention can further reduce the probability of accidents.

Apparently, the electric bicycle provided by the present invention has a high degree of intelligence, good safety performance, and technical advantages of being more humanized and practical.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the schematic diagram of the three-dimensional structure of the electric bicycle provided by the embodiment of the present invention;

Fig. 2 is a three-dimensional structural schematic diagram of another viewing angle of the electric bicycle provided by the embodiment of the present invention;

Fig. 3 is a schematic diagram of an enlarged structure of part A in Fig. 2;

Fig. 4 is the schematic diagram of the enlarged structure of part B in Fig. 2;

FIG. 5 is a schematic perspective view of another embodiment of the electric bicycle provided by the embodiment of the present invention;

FIG. 6 is a schematic diagram of an enlarged structure of part C in FIG. 5;

Fig. 7 is a schematic structural diagram of the control principle of the electric bicycle provided by the embodiment of the present invention.

Icons: 1-electric vehicle body; 11-start button; 12-stop button; 2-motor; 3-controller; 4-first infrared sensor; 5-second infrared sensor; 6-speech recognizer; 7-alarm 71-voice broadcast module; 72-deceleration warning light; 73-acceleration warning light; 74-brake warning light; 75-warning light; 8-housing.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

Embodiment one

Referring to Fig. 1-Fig. 4 and Fig. 7, the first embodiment provides an electric bicycle, including an electric bicycle body 1, a motor 2, a controller 3, a first infrared sensor 4, a second infrared sensor 5, and a speech recognizer 6 and alarm7.

Wherein, the first infrared sensor 4 and the second infrared sensor 5 are installed on the head end and tail end of the electric vehicle body 1 respectively; the detecting end of the first infrared sensor 4 faces the electric vehicle body 1 The front of the electric vehicle body 1 is used to detect the distance between the electric vehicle body 1 and the obstacle in front; the detection end of the second infrared sensor 5 is directly behind the electric vehicle body 1 for detecting the electric vehicle body 1 The distance with the rear vehicle; the first infrared sensor 4, the second infrared sensor 5 and the speech recognizer 6 are all electrically connected to the controller 3, and the controller 3 is also connected to the motor 2 respectively It is electrically connected with the alarm 7, and both the speech recognizer 6 and the alarm 7 are installed on the front end of the electric vehicle body 1 .

A start button 11 and a stop button 12 are installed on the electric vehicle body 1 , and both the start button 11 and the stop button 12 are electrically connected to the controller 3 .

Analysis of the specific connection mode and positional relationship of the above-mentioned structure shows that: the first infrared sensor 4 is installed on the head end of the electric vehicle body 1 and is electrically connected with the controller 3, so that when the electric vehicle is ahead of a certain distance (this distance is determined by the first infrared sensor 4 When an obstacle (such as a vehicle) appears in the effective distance), the first infrared sensor 4 can detect the distance between the electric vehicle body 1 and the obstacle in front in real time, and transmit the detected distance signal to the controller 3 in real time , the controller 3 analyzes the signal, and then obtains the speed of the obstacle in front; because the controller 3 is also electrically connected with the alarm 7, so that when the speed of the obstacle in front is lower than the speed of the electric vehicle, the controller 3 can give Alarm device 7 sends deceleration signal, and alarm device 7 sends deceleration alarm signal after receiving deceleration signal. When the controller 3 performs the next step operation, just say "agree" to the speech recognizer 6, if you disagree, the controller 3 can say "disagree" to the speech recognizer 6 when performing the next step, specifically The output voice signal can be freely set, and is not limited to the above words; when the controller 3 receives an order that does not agree to perform the next operation, it stops the next operation and enters a standby state. When the command is issued, a deceleration signal is sent to the motor 2, so that the driving speed of the electric vehicle is the same as that of the obstacle in front to prevent collisions, which is very convenient. In addition, when the first infrared sensor 4 detects that the distance between the obstacle in front and the electric vehicle is too small, the controller 3 can send an emergency braking signal to the alarm 7, and the alarm 7 sends an emergency braking alarm signal after receiving the emergency braking signal. Then the controller 3 will directly control the motor 2 to stop, so as to prevent collision and ensure safety.

The second infrared sensor 5 is installed on the tail end of the electric vehicle body 1 and is electrically connected with the controller 3, so that when the vehicle appears in a certain distance behind the electric vehicle (this distance is determined by the effective distance of the second infrared sensor 5), the second The infrared sensor 5 can detect the distance between the electric vehicle body 1 and the rear vehicle in real time, and transmit the detected distance signal to the controller 3 in real time, and the controller 3 analyzes the signal, and then obtains the speed of the rear vehicle; Because the controller 3 is also electrically connected with the alarm 7, so that when the speed of the rear vehicle is greater than the speed of the electric vehicle, the controller 3 can send an acceleration signal to the alarm 7, and the alarm 7 sends an acceleration alarm signal after receiving the acceleration signal , at the same time, the voice recognizer 6 connected with the controller 3 is turned on, and after the rider receives the acceleration alarm signal sent by the alarm 7, if he agrees that the controller 3 performs the next step operation, he will say "agree" to the voice recognizer 6 That is, if you do not agree with the controller 3 to say "disagree" to the voice recognizer 6 when performing the next step, the specific voice signal can be set freely, and is not limited to the above words; When not agreeing to execute the command of the next step, stop the next step and enter the standby state. When the controller 3 receives the command of agreeing to execute the next step, it sends an acceleration signal to the motor 2, so that the driving speed of the electric vehicle is the same as that of the rear. Vehicles travel at the same speed to prevent collisions, which is very convenient.

In order to make the electric bicycle more humanized, a start button 11 and a stop button 12 are arranged on the electric vehicle body 1, and the start button 11 and the stop button 12 are electrically connected to the controller 3, and pressing the start button 11 can start the first Infrared sensor 4 and the second infrared sensor 5, so as to achieve the purpose of starting the whole set of intelligent control system, when no intelligent control is needed, you can press the stop button 12 to stop the work of the first infrared sensor 4 and the second infrared sensor 5, and the rider will It is possible to operate the electric bicycle completely by yourself.

It should be noted that both hands of the cyclist are occupied when riding, and the voice recognizer 6 is used for the cyclist to issue commands without occupying both hands of the cyclist, which is safer and more convenient; in addition, the voice recognizer 6 is installed on the electric On the handlebar on the electric vehicle body 1, it is convenient for the rider to provide instructions to the voice recognizer 6 while riding, and the alarm 7 is installed on the handlebar of the electric vehicle main body 1, which has strong visibility and audibility . The rider can freely choose whether to control the motor 2 by the controller 3 according to the road conditions, which is very practical. Compared with purely manual braking, the automatic braking function of the electric bicycle provided in Embodiment 1 can further reduce the probability of accidents.

Apparently, the electric bicycle provided by the first embodiment has higher intelligence, better safety performance, and more humanized and practical technical advantages.

Embodiment two

Referring to Fig. 1-Fig. 4 and Fig. 7, this embodiment 2 provides an electric bicycle, and also adopts the technical structural relationship of the electric bicycle in the above-mentioned embodiment 1; for example: this embodiment 2 provides an electric bicycle , including an electric vehicle body 1 , a motor 2 , a controller 3 , a first infrared sensor 4 , a second infrared sensor 5 , a voice recognizer 6 and an alarm 7 . Wherein, the first infrared sensor 4 and the second infrared sensor 5 are installed on the head end and tail end of the electric vehicle body 1 respectively; the detecting end of the first infrared sensor 4 faces the electric vehicle body 1 The front of the electric vehicle body 1 is used to detect the distance between the electric vehicle body 1 and the obstacle in front; the detection end of the second infrared sensor 5 is directly behind the electric vehicle body 1 for detecting the electric vehicle body 1 The distance with the rear vehicle; the first infrared sensor 4, the second infrared sensor 5 and the speech recognizer 6 are all electrically connected to the controller 3, and the controller 3 is also connected to the motor 2 respectively It is electrically connected with the alarm 7, and both the speech recognizer 6 and the alarm 7 are installed on the front end of the electric vehicle body 1 . A start button 11 and a stop button 12 are installed on the electric vehicle body 1 , and both the start button 11 and the stop button 12 are electrically connected to the controller 3 .

The electric bicycle provided in the second embodiment has the same main structure as the electric bicycle in the first embodiment; however, the electric bicycle provided in the second embodiment also involves a specific structural design. The difference between the second embodiment and the first embodiment is that the electric bicycle in the second embodiment has more specific structural features for the specific structure; The structure is further defined.

The specific structure and technical effect of the technical solution related to the second embodiment are as follows:

Referring to Fig. 3 and Fig. 6, voice broadcast module 71 can be set in alarm device 7, and voice broadcast module 71 is electrically connected with controller 3, after voice broadcast module 71 receives alarm signal, voice broadcast module 71 can send out voice The warning signal, such as broadcasting "is about to slow down", "is about to speed up" or "is about to brake", etc., enables the rider to better understand the alarm information sent by the alarm device 7 .

As a possible implementation, referring to Fig. 5 and Fig. 6, a deceleration warning light 72, an acceleration warning light 73 and a brake warning light 74 can be set in the alarm 7, and the deceleration warning light 72, the acceleration warning light 73 and the brake warning light Lamp 74 is all electrically connected with controller 3, and when controller 3 sends deceleration signal to alarm device 7, deceleration prompt lamp 72 can be lighted, and when controller 3 sends acceleration signal to alarm device 7, acceleration warning lamp 73 can be turned on. Be lighted, when controller 3 sends braking signal to alarm 7, brake warning light 74 can be lighted; It is very intuitive to judge the content of the instruction to be issued by the controller 3 based on the state, and is suitable for use in a noisy environment.

Further, the deceleration warning light 72, the acceleration warning light 73 and the brake warning light 74 can all be set as LED lights, which have a long life and are more energy-saving.

As another possible implementation, referring to Fig. 2 and Fig. 3, a variable color warning light 75 can be set in the alarm 7, and when the controller 3 sends a deceleration signal to the alarm 7, the warning light 75 will emit green light , when the controller 3 sends an acceleration signal to the alarm 7, the warning lamp 75 will emit a yellow light, and when the controller 3 sends a brake signal to the alarm 7, the brake warning lamp 74 will be emitted a red light; the rider can According to the color of the warning light 75 in the alarm 7, the content of the instruction to be issued by the controller 3 is judged, which is very intuitive and suitable for use in a noisy environment.

Further, the warning light 75 can be set as an LED light, which has a long life and is more energy-saving.

Preferably, referring to Fig. 1 and Fig. 4, a housing 8 is sleeved outside the first infrared sensor 4 and the second infrared sensor 5 respectively, and the two housings 8 are respectively fixed on the front and rear ends of the electric vehicle body 1, So that the first infrared sensor 4 and the second infrared sensor 5 can be isolated from the external environment, prolong the service life; Wherein, in order to make the detection end of the first infrared sensor 4 and the second infrared sensor 5 can work normally, will be connected with the first infrared sensor The part of the housing 8 corresponding to the sensor 4 facing the detection end of the first infrared sensor 4 is set to a transparent structure, and the part of the housing 8 corresponding to the second infrared sensor 5 facing the detection end of the second infrared sensor 5 is also set to be transparent structure.

In order to facilitate the installation and disassembly of the housing 8 , the two housings 8 are respectively connected to the electric vehicle body 1 in a detachable manner.

In particular, the first infrared sensor 4, the second infrared sensor 5 and the alarm 7 are all electrically connected to the storage battery on the electric vehicle body 1, and the storage battery is used to provide the first infrared sensor 4, the second infrared sensor 5 and the alarm 7. The electric energy maintains the work of the first infrared sensor 4, the second infrared sensor 5 and the alarm 7 without other power sources.

Preferably, the start button 11 and the stop button 12 can be installed on the handlebar of the electric vehicle body 1, so that the operation is convenient, and at the same time, the speech recognizer 6 is installed on the handlebar of the electric vehicle body 1, so that the rider is convenient. Facing the voice recognizer 6 while riding.

To sum up, the embodiment of the present invention discloses an electric bicycle, which overcomes many technical defects of traditional electric bicycles. The electric bicycle provided by the embodiment of the present invention has a high degree of intelligence, good safety performance, and technical advantages of being more humanized and practical.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. a kind of electric bicycle, it is characterised in that including electric car body, motor, controller, the first infrared sensor, Two infrared sensors, speech recognition device and alarm；

Wherein, first infrared sensor and second infrared sensor are separately mounted to the head end of the electric car body And tail end；The front of electric car body, described electronic for detecting described in the end of probe face of first infrared sensor The distance of car body and front obstacle；Electric car body described in the end of probe face of second infrared sensor just after Side, for detecting the distance of the electric car body and front vehicle；First infrared sensor, second infrared sensing Device and institute's speech recognizer are electrically connected with the controller, the controller also respectively with the motor and the alarm Electrical connection, institute's speech recognizer and the alarm are installed in the front end of the electric car body；

Start button and stop button be installed, the start button and the stop button are and institute on the electric car body State controller electrical connection.

2. electric bicycle according to claim 1, it is characterised in that the alarm includes voice broadcast module, institute State voice broadcast module to be electrically connected with the controller, and the voice broadcast module can report what the controller will be made Action.

3. electric bicycle according to claim 1, it is characterised in that the alarm includes deceleration warning light, accelerates Warning lamp and brake warning lamp, the deceleration warning light, it is described acceleration warning lamp and the brake warning lamp with the control Device is electrically connected；The deceleration warning light is lighted when the controller sends reduce-speed sign, and the acceleration warning lamp is in the control Device processed is lighted when sending signal for faster, and the brake warning lamp is lighted when the controller sends brake signal.

4. electric bicycle according to claim 3, it is characterised in that the deceleration warning light, the acceleration warning lamp It is LED light with the brake warning lamp.

5. electric bicycle according to claim 2, it is characterised in that the alarm includes warning lamp, the warning Lamp is Color-changing lamp, and the warning lamp is electrically connected with the controller；The warning lamp sends reduce-speed sign in the controller When in green, the warning lamp is in yellow when the controller sends signal for faster, and the warning lamp is sent out in the controller Take on a red color when going out brake signal.

6. electric bicycle according to claim 5, it is characterised in that the warning lamp is LED light.

7. according to claim 1-6 any one of them electric bicycles, it is characterised in that further include two housings, two institutes State the rear and front end that housing is separately fixed at the electric car body, and first infrared sensor and the second infrared biography Sensor is respectively in two housings；

The part of the end of probe of the first infrared sensor is described in the housing face corresponding with first infrared sensor Transparent configuration, the portion of the end of probe of the second infrared sensor described in the housing face corresponding with second infrared sensor It is divided into transparent configuration.

8. electric bicycle according to claim 7, it is characterised in that two housings with the electric car body It is detachably connected.

9. according to claim 1-6 any one of them electric bicycles, it is characterised in that first infrared sensor, institute The second infrared sensor and the alarm is stated to be electrically connected with the storage battery on the electric car body.

10. according to claim 1-6 any one of them electric bicycles, it is characterised in that the start button and described stop Only button is installed on the handlebar of the electric car body；Institute's speech recognizer is installed on a horizontal stroke for the electric car body On.