CN203996228U - A kind of automobile parking braking safety aid - Google Patents
A kind of automobile parking braking safety aid Download PDFInfo
- Publication number
- CN203996228U CN203996228U CN201420384032.1U CN201420384032U CN203996228U CN 203996228 U CN203996228 U CN 203996228U CN 201420384032 U CN201420384032 U CN 201420384032U CN 203996228 U CN203996228 U CN 203996228U
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- CN
- China
- Prior art keywords
- electromagnetic lock
- infrared pickoff
- parking braking
- braking safety
- automobile parking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model belongs to the safe ancillary technique of automobile parking braking field, discloses a kind of automobile parking braking safety aid based on infrared technique, comprises infradred sensor, non-gate cell, voltage stabilizer, power integrated switch, rectifier diode, electromagnetic lock and power subsystem unit; Input end and the positive source of voltage stabilizer join, and mouth is connected with infrared pickoff input end, stablize 5V voltage for infrared pickoff provides; Infrared pickoff receives parking brake pull bar pull-up or puts down signal and is connected with power integrated switch through not gate after built-in signal is processed; Whether opening of power integrated switch control electromagnetic lock; Power subsystem unit is respectively infrared pickoff and electromagnetic lock provides required operating voltage separately; And establish manual unit and be directly connected with electromagnetic lock.This device can the pull-up of monitor vehicle parking brake with put down situation, remind in time chaufeur pull-up parking brake, have necessarily mandatoryly, can effectively reduce traffic injuries and deaths accident.
Description
Technical field
The utility model relates to automotive electronic technology control field, relates in particular to a kind of automobile parking braking safety aid.
Background technology
In present stage major part, low-grade car still adopts the braking during standstill control of Manual mechanical, and due to chaufeur carelessness, after parking, there is no timely pull-up parking brake, cause the unnecessary loss that vehicle slip causes to happen occasionally because of some external factors such as wind-force, vibrations, the gradients.
Utility model content
The purpose of this utility model is to overcome above-mentioned prior art shortcoming, a kind of automobile parking braking safety aid is provided, this device can effectively remind chaufeur to implement braking during standstill after chaufeur stops, and have certain mandatory, thereby solve chaufeur and do not carry out in time due to carelessness the problem of braking during standstill.
For addressing the above problem, the technical scheme that the utility model is taked is: comprise parking brake pull bar, successively connect for gathering the pull-up of automobile hand brake pull bar and putting down infrared pickoff, not gate, power switch circuit and the electromagnetic lock of signal, this electromagnetic lock is arranged on chaufeur one sidecar door;
Described infrared pickoff is positioned at a side of parking brake pull bar, and parking brake pull bar is positioned at infrared pickoff maximum detection range.
Input end, the mouth of not gate and the input end of power switch circuit that the mouth of described infrared pickoff connects not gate are connected, and 2 pin of power switch circuit connect the anode of electromagnetic lock and the negative electrode of rectifier diode; 4 pin of the anode of electromagnetic lock, the anode of rectifier diode, power switch circuit and the common node of infrared pickoff connect the negative electrode of direct supply;
The input end of described infrared pickoff is connected with the mouth of voltage stabilizing element, and the input end of voltage stabilizing element, 1 pin of power switch circuit connect the anode of direct supply.
Described infrared pickoff model is TCRT5000.
Described not gate model is 74LS14.
Described voltage stabilizing element be LM2940 ?5.0 voltage stabilizers.
On the circuit between the negative pole of electromagnetic lock and the negative pole of power supply, be serially connected with hand switch.
The model of described rectifier diode is IN4001 type silicon rectifier diode.
Described electromagnetic lock be HS ?L60 kilogram of magnetic key operated lock.
Described direct supply is 12V direct supply.
Described power switch circuit model is TWH8778.
Compared with prior art, the utlity model has following beneficial effect: the utility model is gathered the pull-up of parking brake pull bar or put down signal by infrared pickoff, by the signal collecting through infrared pickoff process after, pass to power switch circuit through not gate, by the sealed of power switch circuit control electromagnetic lock with open, can be in not affecting parking braking system of automobile use, can effectively help chaufeur effectively to implement afterwards braking during standstill in parking, simple in structure, can effectively reduce the generation of Peril Incident.
Further, owing to being provided with hand switch, in the time that being out of order, whole device can directly open electromagnetic lock by hand switch.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is schematic circuit diagram of the present utility model;
Fig. 3 is the utility model infrared sensor module schematic circuit diagram;
Fig. 4 is the pinouts of hex inverter (having Schmidt trigger) 74LS14;
Fig. 5 is the external form figure of power integrated switch TWH8778;
Wherein, 1. infrared pickoff, 2. not gate, 3. power switch circuit, 4. voltage stabilizing element, 5. rectifier diode, 6. electromagnetic lock, 7. hand switch, 8. direct supply.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further details:
Referring to Fig. 1 and Fig. 2, the utility model comprise parking brake pull bar, successively connect be positioned at parking brake pull bar one side for gathering infrared pickoff 1, not gate 2, the TWH87783 type power switch circuit 3 that model is 74LS14 of automobile hand brake pull bar signal and being arranged on HS-L60 kilogram of magnetic key operated lock on chaufeur one sidecar door; Parking brake pull bar is positioned at infrared pickoff 1 maximum detection range, this infrared pickoff 1 has transmitting terminal and receiving end, the pull-up that receives parking brake pull bar by receiving end whether, the maximum that maximum distance between the extended position of transmitting terminal and parking brake pull bar is no more than infrared pickoff 1 detects distance, the mouth that the mouth of infrared pickoff 1 is connected with not gate 2, not gate 2 is connected with the input end of power switch circuit 3, the anode of output termination electromagnetic lock 6 of power switch circuit 3 and the negative electrode of rectifier diode 5; The negative electrode of electromagnetic lock 6, the anode of rectifier diode 5,4 pin of power switch circuit 3 and the common node of infrared pickoff 1 connect the negative electrode of direct supply 8; On the circuit between the negative electrode of electromagnetic lock 6 and the negative electrode of direct supply 8, be serially connected with hand switch 7.
The input end of infrared pickoff 1 is connected with the mouth of LM2940-5.0 type voltage stabilizer, LM2940-5.0 type voltage stabilizer the common node of 1 pin of input end, power switch circuit 3 connect the anode of direct supply 8.
The model of the infrared pickoff that the utility model is taked is TCRT5000, TCRT5000 opto-electronic pickup module is a infrared reflection photoelectric switch based on the design of TCRT5000 infrared photoelectric sensor, infrared pickoff 1 adopts high transmit power infrared photodiode and high sensitivity phototransistor composition, output signal is through Schmidt circuit shaping, reliable and stable.Oad: long 32mm～37mm; Wide 10mm; Thick 2mm operating voltage: DC3V～5.5V, recommended work voltage is 5V, detects distance: 1mm～8mm and is suitable for, focal length is 2.5mm.
Referring to Fig. 3, be the utility model infrared sensor module schematic circuit diagram; Infrared pickoff comprises resistance R 3, R4, R5, infrarede emitting diode D1, instruction diode D2, photo-transistor T and the first capacitor C 1, after infrared pickoff starts, under the effect transmitting, infrarede emitting diode D1 constantly launches infrared ray, when the infrared ray of launching is not reflected back or is reflected back but insufficient strength when large, photo-transistor T is always in closing section state, now infrared pickoff output low level signal; When object to be detected appears in detection range, infrared pickoff be reflected back and intensity enough large, photo-transistor T is saturated, now infrared pickoff output high level signal, instruction diode D2 is lit.
The not gate model that the utility model adopts is that 74LS14 is 6 reversers, and a slice chip is 6 tunnels altogether, and Output rusults and input results are reverse, if input end is high level, are output as so low level.If input low level, is output as high level.
The parameter value of the main electrical characteristics of its 74LS14 is as follows:
| Model | ΔVt | tPLH | tPHL | PD |
| 54/74LS14 | 0.8V | 15ns | 15ns | 52mW |
The voltage stabilizer that the utility model adopts is LM2940-5.0 low voltage difference three-terminal voltage-stabilizing chip (domestic), the low voltage difference three terminal regulator that output voltage is fixing; Output voltage 5V; Outgoing current 1A; When outgoing current 1A, the poor 0.8V that is less than of minimum input and output voltage; Maximum input voltage 26V operating temperature-40～+ 125 DEG C; Include quiescent current reduction circuit, current limit, overheating protection, battery reversal connection and anti-plug and enter protective circuit.
The power integrated switch that the utility model adopts is TWH8778, and it belongs to high speed integrated electronic switch, can be used for various automatic control circuits.It adopts TO-2205 pin plastic package packaging, and volume is little, and profile is simple, and peripheral circuit is simple, and its inside has overvoltage, overcurrent, overheat protective function, and highly versatile can be applicable to the driving switch field application of large electric current.The basic specification of this power integrated switch is:
Overvoltage protection: representative value 30v maxim 40
Minimum input voltage: representative value 3v
Maximum input voltage: 30v
Control end maximum voltage; 6v
Delay time: representative value 8 microsecond maxim 20 microseconds
Control end cut-in voltage: 1.6-2v
Export-restriction electric current: minimum value: 0.55A representative value: 0.8A maxim 1A
Switch pressure drop: 500 millivolts of 300 millivolts of maxims of representative value
The arrangement diode that the utility model adopts is IN4001 type silicon rectifier diode, a kind of for changing alternating current into galvanic semiconductor devices.It comprises a PN junction, has two terminals of anode and negative electrode.Its structure as shown in Figure 6.The current carrier in P district is hole, and the current carrier in N district is electronics, at P district and the certain barrier potential of the interval formation of N.When relative N district of the additional P of making district is positive voltage, barrier potential reduces, and near barrier potential both sides, produces and stores current carrier, can lead to super-high-current, has low loss in voltage (representative value is 0.7V), is called forward conduction state.If add contrary voltage, barrier potential is increased, can bear high reverse voltage, flow through very little counter-current (title reverse leakage current), be called reverse blocking state.Rectifier diode has obvious unilateral conductivity.Rectifier diode can be with the manufacture of the material such as semiconductor Germanium or silicon.The punching voltage of silicon rectifier diode is high, and reverse leakage current is little, and high-temperature behavior is good.
Basic specification
Model IN4001
The highest peak reverse voltage: 50V
Average rectified current: 1.0A
Greatest peak surge current: 30A
Maximum Reverse Leakage Current: 5.0UA
Forward voltage drop: 1.0V
External form DO--41
Electromagnetic lock is HS-L60 kilogram of magnetic key operated lock (can be replaced by magnetic key operated lock of the same type).
Maximum pull: 60kg (100Lbs) straight line pulling force.
Input voltage: DC12V+10%.
Working current: 12V/300mA.Applicable temperature: 10～+ 55 DEG C (14-131F).
Size: L80mm × W37mm × H25mm.
Be the pinouts of the utility model hex inverter (having Schmidt trigger) 74LS14 referring to Fig. 4, wherein A end is input end, and Y end is mouth, altogether 6 tunnels of a slice chip, 1,3,5,9,11,13 is input end, 2,4,6,8,10,12 is mouth, and Output rusults and input results are reverse.
Referring to Fig. 5, for the external form figure of the utility model power integrated switch TWH8778, this power integrated switch is 5 pins altogether, pin arrangements from left to right respectively: 1 pin (input end), 2,3 pin (mouth), 4 pin () 5 pin (the control utmost point).2,3 pin inside are in parallel.Wherein the resistance between 4,5 pin is about 40k ohm (digital multimeter survey).Only need add about 1.6V (maxim is 6V) voltage at control end (5 pin), just energy control output end (2 fast, 3 pin) break-make of the load power source that connects, control only about 50uA of extremely defeated people's electric current, the loss in voltage between input end's (1 pin) and mouth when conducting is generally 0.18 one 0.45V.
The utility model is connected (as Fig. 2) by infradred sensor successively with not gate, voltage stabilizer, power integrated switch, rectifier diode, electromagnetic lock, the circuit card connecting is rationally placed in to an automobile hand brake bar left side (right side) side, make infradred sensor the signal of parking brake pull bar can be detected, electromagnetic lock is placed on chaufeur one sidecar door; In the time of running car, hand brake lever is that the now infradred sensor putting down does not receive reflected signal, what obtain is to put down signal, by circuit transmissioning signal, it is sealed that power integrated circuit is controlled electromagnetic lock then, this does not affect to drive and travels in normally travelling, and electromagnetic lock has improved the safety factor of car door to a certain extent on the contrary; After automobile stops, now due to also not pull-up of parking brake, electromagnetic lock is still in locked state, if chaufeur does not pull the hand brake to open the door and gets off, can not realize, when chaufeur pull-up parking brake, now sensor receives the infrared ray that hand brake lever reflects, it is parking brake pull-up signal, by circuit transmissioning signal, power integrated circuit is then controlled electromagnetic lock and is opened fast, and now chaufeur can open the door and get off.And set up hand switch, in the time that being out of order, device can directly open electromagnetic lock 6 by manual unit.
Claims (10)
1. an automobile parking braking safety aid, it is characterized in that: comprise parking brake pull bar, successively connect for gathering the pull-up of automobile hand brake pull bar and putting down infrared pickoff (1), not gate (2), power switch circuit (3) and the electromagnetic lock (6) of signal, this electromagnetic lock (6) is arranged on chaufeur one sidecar door;
Described infrared pickoff (1) is positioned at a side of parking brake pull bar, and parking brake pull bar is positioned at infrared pickoff (1) maximum detection range.
2. a kind of automobile parking braking safety aid according to claim 1, it is characterized in that: the mouth of described infrared pickoff (1) connects the input end of not gate (2), the mouth of not gate (2) is connected with the input end of power switch circuit (3), and 2 pin of power switch circuit (3) connect the anode of electromagnetic lock (6) and the negative electrode of rectifier diode (5); The anode of electromagnetic lock (6), the anode of rectifier diode (5), 4 pin of power switch circuit (3) and the common node of infrared pickoff (1) connect the negative electrode of direct supply (8);
The input end of described infrared pickoff (1) is connected with the mouth of voltage stabilizing element (4), and the input end of voltage stabilizing element (4), 1 pin of power switch circuit (3) connect the anode of direct supply (8).
3. a kind of automobile parking braking safety aid according to claim 1 and 2, is characterized in that: described infrared pickoff (1) model is TCRT5000.
4. a kind of automobile parking braking safety aid according to claim 1 and 2, is characterized in that: described not gate (2) model is 74LS14.
5. a kind of automobile parking braking safety aid according to claim 2, is characterized in that: described voltage stabilizing element (4) is LM2940-5.0 voltage stabilizer.
6. a kind of automobile parking braking safety aid according to claim 2, is characterized in that: on the circuit between the negative pole of electromagnetic lock (6) and the negative pole of power supply (8), be serially connected with hand switch (7).
7. a kind of automobile parking braking safety aid according to claim 2, is characterized in that: the model of described rectifier diode (5) is IN4001 type silicon rectifier diode.
8. a kind of automobile parking braking safety aid according to claim 1 and 2, is characterized in that: described electromagnetic lock (6) is HS-L60 kilogram of magnetic key operated lock.
9. a kind of automobile parking braking safety aid according to claim 2, is characterized in that: described direct supply (8) is 12V direct supply.
10. a kind of automobile parking braking safety aid according to claim 1 and 2, is characterized in that: described power switch circuit (3) model is TWH8778.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384032.1U CN203996228U (en) | 2014-07-11 | 2014-07-11 | A kind of automobile parking braking safety aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384032.1U CN203996228U (en) | 2014-07-11 | 2014-07-11 | A kind of automobile parking braking safety aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203996228U true CN203996228U (en) | 2014-12-10 |
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ID=52036273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420384032.1U Expired - Fee Related CN203996228U (en) | 2014-07-11 | 2014-07-11 | A kind of automobile parking braking safety aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203996228U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010026A (en) * | 2015-12-10 | 2017-08-04 | 福特全球技术公司 | Electric parking brake for autonomous vehicle |
-
2014
- 2014-07-11 CN CN201420384032.1U patent/CN203996228U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010026A (en) * | 2015-12-10 | 2017-08-04 | 福特全球技术公司 | Electric parking brake for autonomous vehicle |
| CN107010026B (en) * | 2015-12-10 | 2021-02-12 | 福特全球技术公司 | Electric parking brake for autonomous vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160711 |