CN104724052A - Detection protection system preventing mis-starting of electric bicycle - Google Patents
Detection protection system preventing mis-starting of electric bicycle Download PDFInfo
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- CN104724052A CN104724052A CN201510005485.8A CN201510005485A CN104724052A CN 104724052 A CN104724052 A CN 104724052A CN 201510005485 A CN201510005485 A CN 201510005485A CN 104724052 A CN104724052 A CN 104724052A
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- driven car
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention relates to a detection protection system preventing mis-starting of an electric bicycle. The detection protection system comprises a pressure sensor which is mounted at the position of a saddle of the electric bicycle and used for detecting the pressure of the saddle, the pressure sensor is connected with a signal conversion circuit, the signal conversion circuit is connected with a single-chip microcomputer control circuit, and the single-chip microcomputer control circuit is connected with a relay drive circuit. Signals of the pressure sensor pass through the signal conversion circuit and then enter the single-chip microcomputer control circuit, and the single-chip microcomputer control circuit drives a relay according to set logic to control on and off of a starting circuit of the electric bicycle. A power supply circuit supplies power to all circuits of the system. The detection protection system preventing mis-starting of the electric bicycle provides starting safety protection for each electric bicycle.
Description
Technical field
The present invention relates to signal detection field, particularly a kind of detection protection system preventing battery-driven car error starting.
Background technology
Battery-driven car is using battery as energy source, by the parts such as controller, motor, is mechanical energy motion by electric energy conversion, to control the vehicle that size of current changes speed.Along with the growth of the consumer group of battery-driven car, it also brings a series of safety problem thereupon.Battery-driven car Starting mode is simple, and only need after twist switch, velocity of rotation handle, just can ride.But just because of this simple Starting mode, in some cases, some potential safety hazards can be formed.As bought vegetables in food market, pull up battery-driven car key because father and mother forget, child's maloperation and the injuries caused is of common occurrence.
Current all battery-driven cars are zero to preventing the design of error starting substantially, from the angle of hommization more, design a kind of detection fender guard of battery-driven car error starting that prevents and seem particularly important.
Summary of the invention
The present invention is directed to the deficiency of existing battery-driven car to the protection of error starting, provide that a kind of structure is simple, the detection protection system preventing battery-driven car error starting of dependable performance.
To achieve these goals, the present invention adopts following technical scheme:
A kind of detection protection system of battery-driven car error starting that prevents is characterized in that: comprise one and be arranged on location of saddle support, detect the silicon pressure sensor of saddle pressure simultaneously, pressure sensor connects a signaling conversion circuit, signal dress changes circuit and connects a single chip machine controlling circuit, and single chip machine controlling circuit connects relay drive circuit; The signal of pressure sensor, through signaling conversion circuit, then enters single chip machine controlling circuit, and single chip machine controlling circuit drives relay according to the logic of setting, controls the break-make of battery-driven car start-up circuit.Power circuit is that each circuit of system is powered.
Above-mentioned pressure sensor: silicon pressure sensor specifications and models are PX138-0.3D5V, driving voltage: be DC 8V, storage temperature is-40 ~ 125 DEG C.This pressure sensor has following characteristic: differential pressure, gauge pressure or absolute pressure can be provided to measure, accurate 5V output range, accurate temperature compensating and constant driving voltage.
Above-mentioned signaling conversion circuit: to have connected the 5th resistance at pressure sensor signal interface, then connected the second op amp, at amplifier input end pin 2 the 11 electric capacity in parallel, pin 2 is directly connected with pin 1, pin 3 ground connection.Be connected in series a parallel-connection structure be made up of the 12 electric capacity and the 6th resistance at output pin 1 place, then export the signal of conversion.Limited owing to receiving the signal power-handling capability of coming from pressure sensor, simultaneously by the interference of noise signal, waveform is undesirable.In order to overcome these shortcomings, the 6th resistance of having connected on the line, the follower simultaneously using the second op amp to form, then outputs to corresponding single-chip processor i/o mouth.
Above-mentioned single chip machine controlling circuit: control core and adopt STM32F051K8U6, reset circuit is made up of the 9th electric capacity and the 3rd resistance, reset signal is taken out from the junction of the 9th electric capacity and the 3rd resistance, the 4th pin of connection control chip.Crystal oscillating circuit adopts quartz crystal to be connected with the 6th electric capacity, the 8th electric capacity respectively, and crystal oscillation signal takes out from the two ends of quartz crystal, the 2nd and the 3rd pin of Access Control chip.The 7th electric capacity is directly connected in series at power supply VCC and GND.Micro controller system radical function receives the change over signal from pressure sensor, drives relay to control the break-make of start-up circuit according to certain logic simultaneously.Consider that system is less demanding to processing speed, the data volume of process is also very little, and simultaneously to factors such as the demand of I/O mouth are few, system takes whole requirements that cheap conventional STM32F051K8U6 just can meet system.Peripheral crystal oscillating circuit: crystal oscillator adopts 8MHz, and external 20pF electric capacity, is connected on electric capacity and quartz crystal in the backfeed loop of amplifier and forms parallel oscillatory circuit.
Above-mentioned relay drive circuit: control signal takes out from the 22nd pin of control chip, connects the 7th resistance, is connected to the base stage of aerotron, the collector connection relay of aerotron, the grounded emitter of aerotron.Relay connects a diode, plays the effect of afterflow.Being serially connected on battery-driven car starting-up later time of relay.
Above-mentioned power circuit: battery-driven car adopts Multi-serial lithium battery concatenation to power, by being reasonably connected in series the power supply obtaining 12V, in order to obtain the system voltage of+5V, can adopt conventional PTN78060WAH chip.The 12V voltage input end of battery-driven car is incorporated to the 4th electric capacity, then connects the 2nd pin of the first power supply chip, connects the first diode at the 2nd pin of the first power supply chip, output pin 6 also connects the tenth electric capacity, 5th electric capacity, the 11 electric capacity, then exports+5V voltage.In order to obtain the system voltage of+3.3V, adopt conventional LM1117MPX-3.3 chip.At the 3rd pin of above-mentioned+5V voltage access power supply chip PTN78060WAH, output pin 4 is connected with pin 2, and output pin 4 also connects the second electric capacity, the 3rd electric capacity, the first electric capacity, then exports+3.3V voltage.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and significant technological advance:
Take pressure sensor to detect the pressure of saddle, signaling conversion circuit have employed voltage follower, overcomes pressure sensor and receives the shortcoming that the signal power-handling capability finite sum of coming easily is subject to the interference of signal; Micro controller system process chip adopts micro controller system STM32F051K8U6 with low cost, meets whole requirements of system; Driving circuit adopts triode to realize the effect of Current amplifier.Power circuit adopts PTN78060WAH and LM1117MPX-3.3, the 12V power supply of battery-driven car has been transferred to+5V and the+3.3V power supply of system needs.The present invention can as the detection protection system preventing battery-driven car error starting, provides startup safety guard-safeguard for each battery-driven car.
Accompanying drawing explanation
fig. 1it is system architecture frame of the present invention
figure.
fig. 2it is signaling conversion circuit of the present invention
figure.
fig. 3it is single chip machine controlling circuit of the present invention
figure.
fig. 4it is relay drive circuit of the present invention
figure.
fig. 5it is power circuit of the present invention
figure.
fig. 6that silicon pressure sensor of the present invention is installed
figure.
fig. 7it is working-flow of the present invention
figure.
Detailed description of the invention
Combine below by preferred embodiment
accompanying drawing, technical scheme of the present invention is described in further detail.
embodiment 1
See
fig. 1~
fig. 6a kind of detection protection system preventing battery-driven car error starting, comprise one and be arranged on electric motor car saddle position, detect the pressure sensor 1 of saddle pressure, pressure sensor 1 connects a signaling conversion circuit 2, signaling conversion circuit 2 connects a single chip machine controlling circuit 3, and single chip machine controlling circuit 3 connects relay drive circuit 4; The signal of pressure sensor 1, through signaling conversion circuit 2, then enters single chip machine controlling circuit 3, and single chip machine controlling circuit 3 drives relay according to the logic of setting, controls the break-make of battery-driven car start-up circuit; Power circuit 5 is that each circuit of system is powered.
embodiment 2
The present embodiment is substantially identical with embodiment one, and special feature is as follows: silicon pressure sensor specifications and models are PX138-0.3D5V, driving voltage: be DC 8V, and storage temperature is-40 ~ 125 DEG C.This pressure sensor can provide differential pressure, gauge pressure or absolute pressure to measure, and has accurate 5V output range, accurate temperature compensating and constant driving voltage.
Described signaling conversion circuit
as Fig. 2described pressure sensor (1) has been connected a 5th resistance R5, and then connect the second op amp Q2A, pin 2 is directly connected with pin 1, be connected in series a parallel-connection structure be made up of the 6th resistance R6 and the 12 electric capacity C12 at output pin 1 place, then obtain the output signal changed.
System control panel adopts the slot P2 with 3 mouths to carry out the signal of sensor as interface, and three mouths of slot are respectively power positive end, sensor signal and power supply ground.Control desk signal transmission line has been connected a 5th resistance R5, use the follower of the second op amp Q2A simultaneously, so just overcome the signal power-handling capability of coming from pressure sensor (1) Signal reception limited, simultaneously by the interference of noise signal, the shortcoming that waveform is undesirable.
Described single chip machine controlling circuit
as Fig. 3shown in, system have chosen cheap STM32F051K8U6 singlechip control chip.Reset circuit is made up of the tenth electric capacity C10 and the 3rd resistance R3, and reset signal is taken out from the junction of the tenth electric capacity C10 and the 3rd resistance R3, the 4th pin of connection control chip.Crystal oscillating circuit adopts quartz crystal Y1 to be connected with the 6th electric capacity C6, the 8th electric capacity C8 respectively, and crystal oscillation signal takes out from the two ends of quartz crystal Y1, the 2nd and the 3rd pin of Access Control chip.A the 7th electric capacity C7 is directly connected in series at power supply VCC and GND.Micro controller system radical function receives the change over signal from pressure sensor, drives relay to control the break-make of start-up circuit according to certain logic simultaneously.The requirement of system to CPU is: receive the change over signal from pressure sensor, completes driving relay according to certain logic simultaneously, thus controls the break-make of start-up circuit.Because system is less demanding to processing speed, the data volume of process is also very little, and simultaneously to factors such as the demand of I/O mouth are few, system takes whole requirements that cheap conventional STM32F051K8U6 just can meet system.Peripheral crystal oscillating circuit: crystal oscillator adopts 8MHz, and external 20pF electric capacity, is connected on electric capacity and quartz crystal in the backfeed loop of amplifier and forms parallel oscillatory circuit.
fig. 7for the workflow of system
figure, first system detects the signal from pressure sensor, then judges that whether pressure is normal; if car plate is in normal condition, then drive relay, and continue the signal of detected pressures sensor; if mal, then disconnect relay and power, play clean boot protective effect.
Described relay drive circuit
as Fig. 4, control signal takes out from the 22nd pin of control chip, connects a 7th resistance R7, is connected to the base stage of the first aerotron Q1, the collector connection relay (5) of the first aerotron Q1, the grounded emitter of the first aerotron Q1.Go up at relay (5) and meet the first diode D1, playing the effect of afterflow.Being serially connected on battery-driven car starting-up later time of relay (5).
Described power circuit
as Fig. 5, choose PTN78060WAH and LM1117MPX-3.3 chip.The 12V voltage input end of battery-driven car is incorporated to the 4th electric capacity C4, then the 2nd pin of the first power supply chip U1A is connected, the first diode V1 is connected in series between the 1st and the 3rd pin of the first power supply chip U1A, output pin 6 also meets the tenth electric capacity C10,5th electric capacity C5,11 electric capacity C11, then exports+5V voltage.In order to obtain the system voltage of+3.3V, adopt conventional LM1117MPX-3.3 chip.At the 3rd pin of above-mentioned+5V voltage access second source chip U2.Output pin 4,2 connect, and output pin 4 also meets the second electric capacity C2, the 3rd electric capacity C3, the first electric capacity C1, then export+3.3V voltage.
Claims (6)
1. one kind prevents the detection protection system of battery-driven car error starting, it is characterized in that: comprise one and be arranged on electric motor car saddle position, detect the pressure sensor (1) of saddle pressure, pressure sensor (1) connects a signaling conversion circuit (2), signaling conversion circuit (2) connects a single chip machine controlling circuit (3), and single chip machine controlling circuit (3) connects relay drive circuit (4); The signal of pressure sensor (1), through signaling conversion circuit (2), then enters single chip machine controlling circuit (3), and single chip machine controlling circuit (3) drives relay according to the logic of setting, controls the break-make of battery-driven car start-up circuit; Each circuit that power circuit (5) is system is powered.
2. the detection protection system preventing battery-driven car error starting according to claim 1, it is characterized in that: described pressure sensor (1) specifications and models are PX138-0.3D5V, driving voltage is DC 8V, and storage temperature is-40 ~ 125 DEG C.
3. the detection protection system preventing battery-driven car error starting according to claim 1; it is characterized in that: the structure of described signaling conversion circuit (2) is: the 5th resistance (R5) of having connected at pressure sensor (1) signaling interface place; then the second op amp (Q2A) is connected; pin 2 is directly connected with pin 1; be connected in series a parallel-connection structure be made up of the 6th resistance (R6) and the 12 electric capacity (C12) at output pin 1 place, then obtain the output signal changed.
4. the detection protection system preventing battery-driven car error starting according to claim 1, is characterized in that: described single chip machine controlling circuit (3) chooses STM32F051K8U6 singlechip control chip; Reset circuit is made up of the tenth electric capacity (C10) and the 3rd resistance (R3), and reset signal is taken out from the junction of the tenth electric capacity (C10) and the 3rd resistance (R3), the 4th pin of connection control chip; Crystal oscillating circuit adopts quartz crystal (Y1) to be connected with the 6th electric capacity (C6), the 8th electric capacity (C8) respectively, and crystal oscillation signal takes out from the two ends of quartz crystal (Y1), the 2nd and the 3rd pin of Access Control chip; The 7th electric capacity (C7) is directly connected in series at power supply VCC and GND.
5. the detection protection system preventing battery-driven car error starting according to claim 1, it is characterized in that: the structure of described relay drive circuit (4) is: control signal takes out from the 22nd pin of control chip, connect the 7th resistance (R7), be connected to the base stage of the first aerotron (Q1), the collector connection relay of the first aerotron (Q1), the grounded emitter of the first aerotron (Q1); Relay connects diode (D1), plays the effect of afterflow; Relay is serially connected on battery-driven car starting-up later time.
6. the detection protection system preventing battery-driven car error starting according to claim 1, is characterized in that: PTN78060WAH and LM1117MPX-3.3 chip chosen by described power circuit (5); The 12V voltage input end of battery-driven car is incorporated to the 4th electric capacity (C4), then the 2nd pin of the first power supply chip (U1A) is connected, the first diode (V1) is connected in series between the 1st and the 3rd pin of the first power supply chip (U1A), output pin 6 also connects the tenth electric capacity (C10), 5th electric capacity (C5), 11 electric capacity (C11), then exports+5V voltage; In order to obtain the system voltage of+3.3V, adopt conventional LM1117MPX-3.3(U2); At the 3rd pin of above-mentioned+5V voltage access second source chip (U2), output pin 4,2 connect, and output pin 4 also connects the second electric capacity (C2), the 3rd electric capacity (C3), the first electric capacity (C1), then export+3.3V voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005485.8A CN104724052A (en) | 2015-01-07 | 2015-01-07 | Detection protection system preventing mis-starting of electric bicycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510005485.8A CN104724052A (en) | 2015-01-07 | 2015-01-07 | Detection protection system preventing mis-starting of electric bicycle |
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| CN104724052A true CN104724052A (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510005485.8A Pending CN104724052A (en) | 2015-01-07 | 2015-01-07 | Detection protection system preventing mis-starting of electric bicycle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301171A (en) * | 2020-02-07 | 2020-06-19 | 北京环境特性研究所 | Electric vehicle getting-off power-off safety circuit and method |
| CN112793691A (en) * | 2021-02-03 | 2021-05-14 | 济南哈滨数控刀具有限公司 | Protection system for electric vehicle with driver position detection function |
| CN113104144A (en) * | 2021-05-31 | 2021-07-13 | 杨杰 | Electric bicycle acceleration protection device |
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| WO2012038677A1 (en) * | 2010-09-23 | 2012-03-29 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Method for measuring power in a bicycle |
| CN203172454U (en) * | 2013-04-12 | 2013-09-04 | 无锡市崇安区科技创业服务中心 | Electrombile hand brake device |
| CN203237072U (en) * | 2013-04-16 | 2013-10-16 | 刘瑶瑶 | System for preventing electric vehicle from being out of control and preventing misoperation of child |
| CN104108452A (en) * | 2013-04-18 | 2014-10-22 | 久鼎金属实业股份有限公司 | Assist control method for electric bicycle |
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2015
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Patent Citations (5)
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| CN101746270A (en) * | 2010-02-01 | 2010-06-23 | 哈尔滨盛世华博科技发展有限公司 | Device for limiting overload of vehicle and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111301171A (en) * | 2020-02-07 | 2020-06-19 | 北京环境特性研究所 | Electric vehicle getting-off power-off safety circuit and method |
| CN112793691A (en) * | 2021-02-03 | 2021-05-14 | 济南哈滨数控刀具有限公司 | Protection system for electric vehicle with driver position detection function |
| CN113104144A (en) * | 2021-05-31 | 2021-07-13 | 杨杰 | Electric bicycle acceleration protection device |
| CN113104144B (en) * | 2021-05-31 | 2024-04-16 | 天津新日电动车科技有限公司 | Acceleration protection device for electric bicycle |
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Application publication date: 20150624 |