CN205434977U - A child electric vehicle automatic detection alarm brake device - Google Patents
A child electric vehicle automatic detection alarm brake device Download PDFInfo
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- CN205434977U CN205434977U CN201521065166.8U CN201521065166U CN205434977U CN 205434977 U CN205434977 U CN 205434977U CN 201521065166 U CN201521065166 U CN 201521065166U CN 205434977 U CN205434977 U CN 205434977U
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Abstract
The utility model provides a children electric car automated inspection alarm arresting gear, include: level range finding braking module, vertical range finding braking module and remote alarming module, level range finding braking module, vertical range finding braking module are launched the ultrasonic wave and are begun the timing along horizontal direction and vertical direction, and the ultrasonic wave meets the barrier bounce -back, the ultrasonic wave that ultrasonic ranging module received after the bounce -back stops the timing promptly, the control unit through count time judge the distance between children electric car and the barrier, and control emergency braking unit carries out emergency braking to through wireless communication to remote alarming module sends a signal, remote alarming module includes a buzzer and vibrating device, and when remote alarming module received a control unit or the 2nd the control unit outgoing letter, this buzzer sent warning, this vibrating device sustained vibration.
Description
Technical field
This utility model patent relates to a kind of automatic detection alarm brake unit for children's electric motor vehicle.
Background technology
Along with the raising of economic level in recent years, toy market has the biggest development prospect, and at present, country has begun to issue two tire policies, and the quantity of following child also will increase.The happy and healthy growth of child is the maximum wish of father and mother, and toy is a requisite part in child's developmental process, and children's electric motor vehicle is one of favorite toy of child.For articles for children, it is essential most the safety of product, this is not only what manufacturing enterprise was focused on, the key factor that buyer considers especially.
Carriage for children currently on the market, speed per hour is between 3-10km/h, and major part perambulator does not has emergency stop (apparatus), is all that child steps on " throttle " and just walks, stops against the simplest measure of power-off, and after power-off, car remains to creep forward, and this is a potential safety hazard.Some perambulator is furnished with head of a family's remote control, and this safety relatively can be higher.But, that be sitting on perambulator operator seat is child, and their perception certainly can not be compared with adult with respond.Having father and mother aside to nurse, child drives, and to play be safe, but hundred close have one to dredge unavoidably, and it is the most tight that the nerve of father and mother is unlikely to be each second, and many times, accident there occurs like this.Child body not only can be damaged by speed per hour at the shock of 3-10km/h, also can impact child body and soul.Another situation, often there is step in the surrounding on square, and the most dangerous when child drives to go to this place time, if father and mother find the most in time, child directly sweeps away, and consequence is hardly imaginable.
Utility model content
The purpose of this utility model patent is to provide a kind of children's electric motor vehicle automatic detection alarm brake unit, which overcomes the deficiencies in the prior art described in background technology.
In order to solve, this utility model patent adopts the following technical scheme that
Children's electric motor vehicle automatic detection alarm brake unit, including: level range finding brake module, vertically range finding brake module and remote alarms module；
Described level range finding brake module includes the first ultrasonic ranging unit, the first control unit and the first brake hard unit；Described first ultrasonic ranging unit to the moving direction transmitting ultrasound wave of children's electric motor vehicle and starts timing along horizontal direction, and this ultrasound wave runs into barrier bounce-back；Ultrasound wave after described first ultrasonic ranging unit receives bounce-back i.e. stops timing；First control unit judges the distance between children's electric motor vehicle and preceding object thing by the time counted；If this distance is more than safe distance, then the first control unit controls the first ultrasonic ranging unit and continues to repeat ultrasound wave occurs；If this distance is less than safe distance, then the first control unit controls the first brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
Described vertically include the second ultrasonic ranging unit, the second control unit and the second brake hard unit away from brake module；Described second ultrasonic ranging unit is launched ultrasound wave earthward and starts timing along vertical direction, and this ultrasound wave rebounds after running into ground；Ultrasound wave after described second ultrasonic ranging unit receives bounce-back i.e. stops timing；The distance that second control unit judges between children's electric motor vehicle and ground by the time counted；If this distance is less than safe distance, then the second control unit controls the second ultrasonic ranging unit and continues to repeat ultrasound wave occurs；If this distance is more than safe distance, then the second control unit controls the second brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
Described remote alarms module includes a buzzer and vibrating device, and when the signal that remote alarms module receives the first control unit or the second control unit sends, this buzzer sends warning, this vibrating device sustained vibration.
In a preferred embodiment: described first control unit, the second control unit all include data processing chip 89C51 and wireless communications chips nRF24L01.
In a preferred embodiment: described first brake hard unit and the second brake hard unit all include the first relay and the second relay, and it is connected to electric vehicle motor positive pole and negative pole；When electric motor car normally travels, described first relay Guan Bi, the second relay disconnects；When electric motor car brake hard, described first relay disconnects, the second relay Guan Bi.
In a preferred embodiment: described remote alarms module is arranged in a bracelet, and described bracelet is worn in the hands of the head of a family.
In a preferred embodiment: described bracelet also has LED display module, when the signal that described remote alarms module receives the first control unit or the second control unit sends, this LED display flashes.
Using technique scheme, this utility model patent has the advantages that
This utility model provides a kind of children's electric motor vehicle automatic detection alarm brake unit, by detection electric motor car distance perpendicular to the ground in real time and electric motor car and the distance of preceding object thing.When the distance in any one direction of both direction is not in safety range, system is it is determined that be under unsafe condition, take Braking mode measure, simultaneously, nRF24L01 radio receiving transmitting module sends out signal, the remote alarms module remotely received will send alarm, and this device is carried on father and mother, and father and mother can pass through this situation knowing child.
This device can effectively solve the problem that in background technology, described existing product exists, it is ensured that " driving safety " of child, and this apparatus module integrated level is high, hardware realizes simple, the most safe and reliable, easily safeguard, be loaded on children's electric motor vehicle and be capable of the moment and effectively automatically control vehicle.
Accompanying drawing explanation
Fig. 1 depicts the control system schematic diagram of level range finding brake module, vertically range finding brake module in this utility model preferred embodiment；
Fig. 2 depicts the another kind of control system schematic diagram of level range finding brake module, vertically range finding brake module in this utility model preferred embodiment；
Fig. 3 depicts the control system schematic diagram of this utility model preferred embodiment medium-long range alarm module.
Detailed description of the invention
This utility model patent is described further by 1-3 and specific embodiment below in conjunction with the accompanying drawings.
The children's electric motor vehicle automatic detection alarm brake unit that this example provides, including level range finding brake module, vertically range finding brake module and remote alarms module；
Refer to Fig. 1: level range finding brake module, the vertically structure of range finding brake module identical, respectively by importation 9, control unit, output part 10 and brake hard unit composition；
Importation 9 includes ultrasonic ranging unit 8 and button 7；The core of control unit is 89C51 chip 1, and its input is connected with the outfan of importation 9, and outfan is connected with the input of output part 10；
Output part 10 includes numeral method 2, nRF24L01 wireless communication module 3, and brake hard unit is motor the 5, first relay 4 and the second relay 6；First relay 4 and the second relay 6 are connected to the two ends of motor 5 respectively.
First relay 4 is connected with motor 5 both positive and negative polarity with the second relay 6, and the flow direction of the DC current being flow through motor 5 by change can change turning to of motor 5, and then realizes the reversing braking of motor 5.As the simple replacement of which, with reference to Fig. 2, by the first relay 4 and the second relay 6, while disconnecting motor 5 power supply, motor 5 can be connected with a resistance 11 on, according to the principle of direct current generator dynamic braking, also can realize Brake stop.
Refer to Fig. 3: remote alarms module be made up of importation 9, control unit, output brake hard unit 10；Importation 9 is nRF24L01 wireless communication module 3；The core of control unit is 89C51 chip 1, and its input is connected with the outfan of importation 9, and outfan is connected with the input of output brake hard unit 10；Output brake hard unit 10 includes led display module 12, buzzer 13 and miniature shock motor 14.
In the present embodiment, microcontroller uses 89C51 Series of MCU, and radio receiving transmitting module uses a monolithic wireless transceiver chip nRF24L01 being operated in 2.4-2.5GHz Global Access ISM band.The present embodiment is additionally provided with numeral method module, and by numeral method, the distance in real time of control object shows the most intuitively.
The ultrasonic ranging unit 8 of described level range finding brake module to the moving direction transmitting ultrasound wave of children's electric motor vehicle and starts timing along horizontal direction, and this ultrasound wave runs into barrier bounce-back；Ultrasound wave after ultrasonic ranging unit 8 receives bounce-back i.e. stops timing；The control unit of level range finding brake module, i.e. 89C51 chip 1 judges the distance between children's electric motor vehicle and preceding object thing by the time counted；If this distance is more than safe distance, then 89C51 chip 1 controls ultrasonic ranging unit 8 and continues to repeat ultrasound wave occurs；If this distance is less than safe distance, then 89C51 chip 1 controls brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
The described vertically ultrasonic ranging unit 8 in brake module is launched ultrasound wave earthward and starts timing along vertical direction, and this ultrasound wave rebounds after running into ground；Ultrasound wave after ultrasonic ranging unit 8 receives bounce-back i.e. stops timing；The described vertically control unit in brake module, i.e. the distance that 89C51 chip 1 judges between children's electric motor vehicle and ground by the time counted；If this distance is less than safe distance, then 89C51 chip 1 controls ultrasonic ranging unit 8 and continues to repeat ultrasound wave occurs；If this distance is more than safe distance, then 89C51 chip 1 controls brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
Below according to the work process under the children's electric motor vehicle automatic detection alarm brake unit different situations of the present embodiment, the use of the children's electric motor vehicle automatic detection alarm brake unit of the present embodiment is described further.
Situation one children's electric motor vehicle drives to step, in the case of the place that covered conduit etc. easily falls:
Following steps 1234 all complete on vertically range finding brake module.
1. ultrasonic ranging: ultrasonic distance measuring module 8 launches ultrasound wave straight down, starts timing while x time, encounters barrier and return the most immediately when ultrasound wave is propagated in atmosphere, and ultrasonic distance measuring module 8 receives echo and stops timing the most immediately.The aerial spread speed of ultrasound wave is v, launches and the time difference △ t of reception echo according to measuring of timer record, so that it may to calculate launch point distance S away from ground, that is: S=v △ t/2.Distance values is shown on charactron 2 in real time by some algorithms, and concrete algorithm is the most common in single-chip microcomputer indication example, the most no longer states.
2.89C51 chip 1 correction data: be provided with safe distance value S in 89C51 chip 1 ', distance S that ultrasonic ranging obtains all can be with safe distance value S in controller ' contrast.Such as, in the first scenario, we arrange safe distance value S '=30cm.The distance on ultrasound wave and ground is at about 20cm, walk on the ground, sensor is little with the distance change on ground, when this distance increases to ＞=S ' suddenly, just it is believed that children's electric motor vehicle has driven to step, the edge in the places such as covered conduit, now, the first relay, the second relay and nRF24L01 wireless communication module will be controlled braking and the effect of wireless telecommunications under the control of 89C51 chip 1.
3. direct current generator reversing braking: in the 2nd step, 89C51 chip 1 has assigned the instruction controlling braking to relay the first relay 4 and the second relay 6.Consulting Fig. 1, according to the positive and negative polar curve of motor in figure and the first relay 4 and connection of the second relay 6, the first relay 4 disconnects, motor loses the power moved forward, meanwhile, the second relay 6 closes, and just achieves the reversal connection of motor, now in motor, current direction is contrary in the case of just closing with the first relay 4, motor produce opposing torque, continue the shortest in a flash, the second relay 6 disconnects, now motor speed is 0, it is achieved that emergency.
The transmission of 4.nRF24L01 wireless signal: in the 2nd step, 89C51 chip 1 assigned the instruction launching signal to nRF24L01 wireless communication module, the step for be that the action with the first relay 4 and the second relay 6 is carried out simultaneously.
The reception of 5.nRF24L01 wireless signal and the generation of alarm: this part is to complete under the control of remote alarms module, refers to Fig. 3 here.When nRF24L013 receives signal, led12, buzzer 13, and eccentric shaking motor 14 by output circuit, will flash under the control of 89C51 chip 1, ring and continuous vibration.In the present embodiment, remote alarms module is arranged in a bracelet, and father and mother carry with, when child faces a danger situation, and father and mother can arrive in after receiving alarm as early as possible.
Situation two travels forward when children's electric motor vehicle, runs into the obstacles such as wall, plateau:
Following steps 1234 are all to complete on the framework of level range finding brake module.
1. ultrasonic ranging: ultrasonic distance measuring module 8 launches ultrasound wave to horizontal direction, starts timing while x time, encounters barrier and return the most immediately when ultrasound wave is propagated in atmosphere, and ultrasonic distance measuring module 8 receives echo and stops timing the most immediately.The aerial spread speed of ultrasound wave is v, launches and the time difference △ t of reception echo according to measuring of timer record, so that it may to calculate launch point distance S away from barrier, that is: S=v △ t/2.Distance values is shown on charactron 2 in real time by some algorithms, and concrete algorithm is the most common in single-chip microcomputer indication example, the most no longer states.
2.89C51 chip 1 correction data: in the present embodiment, is provided with safe distance value S in 89C51 chip 1 ', distance S that ultrasonic ranging obtains all can be with safe distance value S in controller ' contrast.In the latter case, we arrange safe distance value S with barrier '=120cm.When real-time distance S, < during 120cm, the first relay 4, the second relay 6 and nRF24L01 wireless communication module will be controlled the effect of braking and wireless telecommunications under the control of 89C51 chip 1 by output circuit.
3. direct current generator reversing braking: in the 2nd step, 89C51 chip 1 has assigned the instruction controlling braking to relay the first relay 4 and the second relay 6.Consulting Fig. 1, according to the positive and negative polar curve of motor in figure and the first relay 4 and connection of the second relay 6, the first relay 4 disconnects, motor loses the power moved forward, meanwhile, the second relay 6 closes, and just achieves the reversal connection of motor, now in motor, current direction is contrary in the case of just closing with the first relay 4, motor produce opposing torque, continue the shortest in a flash, the second relay 6 disconnects, now motor speed is 0, it is achieved that emergency.
Situation can also use dynamic braking for two times: because situation is once, induction apparatus is placed under front cover, in the time that surface state changes to stop completely being detected the shortest, application reversing braking can make car stop in very short time, but jerk car can cause certain impact to child body.Using dynamic braking two times in situation, dynamic braking can not make car stop in very short time, and it is one docking process the most slowly.Situation two times, we can extend the time of the whole process of emergency by the value changing S ', it is known that stop more " gentle ", the impact to child is the least.
The transmission of 4.nRF24L01 wireless signal: with situation 1 step 4.
The reception of 5.nRF24L01 wireless signal and the generation of alarm: with situation 1 step 5.
Above in conjunction with accompanying drawing, this utility model patent is described in detail; but the embodiment of this utility model patent is not limited in above-mentioned embodiment; this utility model patent can be made various deformation according to prior art by those skilled in the art; as changed panel kernel model; change communication module chip kind; changing the mode etc. of range finding, these broadly fall into the protection domain of this utility model patent.
Claims (5)
1. children's electric motor vehicle automatic detection alarm brake unit, it is characterised in that including: level range finding brake module, vertically range finding brake module and remote alarms module；
Described level range finding brake module includes the first ultrasonic ranging unit, the first control unit and the first brake hard unit；Described first ultrasonic ranging unit to the moving direction transmitting ultrasound wave of children's electric motor vehicle and starts timing along horizontal direction, and this ultrasound wave runs into barrier bounce-back；Ultrasound wave after described first ultrasonic ranging unit receives bounce-back i.e. stops timing；First control unit judges the distance between children's electric motor vehicle and preceding object thing by the time counted；If this distance is more than safe distance, then the first control unit controls the first ultrasonic ranging unit and continues to repeat ultrasound wave occurs；If this distance is less than safe distance, then the first control unit controls the first brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
Described vertically include the second ultrasonic ranging unit, the second control unit and the second brake hard unit away from brake module；Described second ultrasonic ranging unit is launched ultrasound wave earthward and starts timing along vertical direction, and this ultrasound wave rebounds after running into ground；Ultrasound wave after described second ultrasonic ranging unit receives bounce-back i.e. stops timing；The distance that second control unit judges between children's electric motor vehicle and ground by the time counted；If this distance is less than safe distance, then the second control unit controls the second ultrasonic ranging unit and continues to repeat ultrasound wave occurs；If this distance is more than safe distance, then the second control unit controls the second brake hard unit and carries out brake hard, and sends signal by wireless telecommunications to described remote alarms module；
Described remote alarms module includes a buzzer and vibrating device, and when the signal that remote alarms module receives the first control unit or the second control unit sends, this buzzer sends warning, this vibrating device sustained vibration.
Children's electric motor vehicle the most according to claim 1 automatic detection alarm brake unit, it is characterised in that: described first control unit, the second control unit all include data processing chip 89C51 and wireless communications chips nRF24L01.
Children's electric motor vehicle the most according to claim 1 automatic detection alarm brake unit, it is characterized in that: described first brake hard unit and the second brake hard unit all include the first relay and the second relay, and it is connected to electric vehicle motor positive pole and negative pole；When electric motor car normally travels, described first relay Guan Bi, the second relay disconnects；When electric motor car brake hard, described first relay disconnects, the second relay Guan Bi.
Children's electric motor vehicle the most according to claim 1 automatic detection alarm brake unit, it is characterised in that: described remote alarms module is arranged in a bracelet, and described bracelet is worn in the hands of the head of a family.
Children's electric motor vehicle the most according to claim 4 automatic detection alarm brake unit, it is characterized in that: described bracelet also has LED display module, when the signal that described remote alarms module receives the first control unit or the second control unit sends, this LED display flashes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065166.8U CN205434977U (en) | 2015-12-18 | 2015-12-18 | A child electric vehicle automatic detection alarm brake device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065166.8U CN205434977U (en) | 2015-12-18 | 2015-12-18 | A child electric vehicle automatic detection alarm brake device |
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| CN205434977U true CN205434977U (en) | 2016-08-10 |
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| CN201521065166.8U Expired - Fee Related CN205434977U (en) | 2015-12-18 | 2015-12-18 | A child electric vehicle automatic detection alarm brake device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435462A (en) * | 2015-12-18 | 2016-03-30 | 华侨大学 | Automatic detecting, alarming and braking device of electric vehicle for child |
| CN106990407A (en) * | 2017-02-24 | 2017-07-28 | 联创汽车电子有限公司 | Anti-collision alarm system ultrasonic blind zone processing method and anti-collision alarm system |
-
2015
- 2015-12-18 CN CN201521065166.8U patent/CN205434977U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435462A (en) * | 2015-12-18 | 2016-03-30 | 华侨大学 | Automatic detecting, alarming and braking device of electric vehicle for child |
| CN106990407A (en) * | 2017-02-24 | 2017-07-28 | 联创汽车电子有限公司 | Anti-collision alarm system ultrasonic blind zone processing method and anti-collision alarm system |
| CN106990407B (en) * | 2017-02-24 | 2020-12-29 | 联创汽车电子有限公司 | Ultrasonic blind area processing method of anti-collision alarm system and anti-collision alarm system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20161218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |