CN203640490U - Anti-pinch device for bus door - Google Patents
Anti-pinch device for bus door Download PDFInfo
- Publication number
- CN203640490U CN203640490U CN201320739249.5U CN201320739249U CN203640490U CN 203640490 U CN203640490 U CN 203640490U CN 201320739249 U CN201320739249 U CN 201320739249U CN 203640490 U CN203640490 U CN 203640490U
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- door
- bus
- chip microcomputer
- attended
- switch
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Abstract
The utility model belongs to the technical field of bus personnel security and discloses an anti-pinch device for a bus door. The anti-pinch device comprises a hand-operated bus door opening switch, a hand-operated bus door closing switch and a power supply and further comprises a voltage comparator, a single-chip microcomputer, a pressure sensor and an alarm light, wherein the power supply is electrically connected with the common node of one ends of the hand-operated bus door opening switch and the hand-operated bus door closing switch; the pressure sensor is arranged on a step which is arranged at the bus door and used for getting on/off the bus; the alarm light is mounted on a driver's console; one ends of the hand-operated bus door opening switch and hand-operated bus door closing switch are electrically connected with the input end of the single-chip microcomputer; the output end of the pressure sensor is electrically connected with the input end of the voltage comparator; the output end of the voltage comparator is electrically connected with the input end of the single-chip microcomputer; the output end of the single-chip microcomputer is electrically connected with the alarm light.
Description
Technical field
The utility model belongs to motor bus personal security technical field, particularly a kind of bus door anti-jamming device.
Background technology
The mankind that develop into of auto industry have brought quick and convenience, but simultaneously, the development of automobile has also caused energy consumption and air pollution.In recent years, along with the attention of country to energy-saving and emission-reduction, the Green Travel modes such as city bus have been waited until house show faster.But city bus is bringing easily simultaneously, because the casualty accident that bus door causes is also of common occurrence.
Peak period on and off duty, bus-load is often too much, after adding head driver time service, can not find in time near the passenger that car door is, thereby in the time of door-closing operation, easily cause the injury to passenger, and the secondary injury accident causing thus may cause serious personnel casualty accidents more.
Utility model content
The purpose of this utility model is to propose a kind of bus door anti-jamming device.This bus door anti-jamming device gathers weight information by being laid in the pressure sensor of getting on or off the bus on step before car door, and then judges whether the front deathtrap of car door has people, realizes and reports to the police, forbids door-closing operation.This bus door anti-jamming device is simple in structure, is easy to realize.
For realizing above-mentioned technical purpose, the utility model adopts following technical scheme to be achieved.
A kind of bus door anti-jamming device, comprise that attended door opens the car door controller that switch, attended door Closing Switch, electrical connection attended door are opened the power supply of the common node of one end of switch and one end of attended door Closing Switch, are electrically connected attended door and open respectively the other end of switch and the other end of attended door Closing Switch, it is characterized in that, also comprise voltage comparator, single-chip microcomputer, be arranged on bus door get on or off the bus step place pressure sensor and be arranged on the alarm lamp on driver's operation bench;
Described attended door is opened the input of switch at one end electrical connection single-chip microcomputer away from power supply, and described attended door Closing Switch is at the input of one end electrical connection single-chip microcomputer away from power supply; The output of described pressure sensor is electrically connected the input of described voltage comparator, and the output of described voltage comparator is electrically connected the input of described single-chip microcomputer; The output electrical connection alarm lamp of described single-chip microcomputer.
Feature of the present utility model and further improvement are:
Described a kind of bus door anti-jamming device, also comprise closed type relay, the auxiliary switch of described closed type relay is serially connected between power supply and attended door Closing Switch (2), and the output of described single-chip microcomputer connects the control end of closed type relay.
Described alarm lamp is LED lamp.
Described a kind of bus door anti-jamming device, also comprises signal amplifier, and the output of described voltage comparator is electrically connected the input of described single-chip microcomputer by described signal amplifier.
Described single-chip microcomputer is 8051 single-chip microcomputers of MCS-51 series.
Described pressure sensor is resistance strain gage pressure sensor.
Described voltage comparator is LT311 type voltage comparator.
The beneficial effects of the utility model are: this bus door anti-jamming device is by get on or off the bus before the car door pressure information at step place of inspection, whether can accurately judge before car door somebody, the LED lamp being simultaneously arranged in driver's cabin can be to before car door, whether somebody plays warning function; This bus door anti-jamming device is simple in structure, and practical function, is convenient to Installation and Debugging, can play and prevent accurately and effectively the hurt sb.'s feelings effect of event of bus door.
Brief description of the drawings
Fig. 1 is the electrical block diagram of a kind of bus door anti-jamming device of the present utility model;
Fig. 2 is the workflow schematic diagram of a kind of bus door anti-jamming device of the present utility model;
Fig. 3 is the specific embodiment electrical block diagram of pressure sensor of the present utility model and voltage comparator.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to Fig. 1, it is the electrical block diagram of a kind of bus door anti-jamming device of the present utility model.In this bus door anti-jamming device, be provided with attended door and open switch 1, attended door Closing Switch 2, two switches (refer to attended door open switch 1 and attended door Closing Switch 2) share a power supply (being for example storage battery), and these two switches are all electrically connected car door controller (for example adopting electric-air valve).Specifically, attended door is opened one end access power supply of switch 1, the corresponding ports of other end electrical connection car door controller, and in the time that attended door is opened switch 1 closure, car door controller is received after the signal of telecommunication at corresponding ports, controls car door opening.One end access power supply of attended door Closing Switch 2, the corresponding ports of other end electrical connection car door controller, in the time that attended door Closing Switch 2 is closed, car door controller is received after the signal of telecommunication at corresponding ports, controls door closing.Generally speaking, attended door opens switch 1 and attended door Closing Switch 2 is all arranged on driver's operation bench, when bus driver can change by these two switches the folding condition of car door.
In conjunction with Fig. 1, in this bus door anti-jamming device, be provided with single-chip microcomputer.This single-chip microcomputer adopts 8051 single-chip microcomputers of MCS-51 series.8051 single-chip microcomputer anti-interferences are good, are applicable to the occasion of adverse circumstances.The I/O pin of 8051 single-chip microcomputers has 32 I/O mouth lines, can be used for connecting the various external devices such as car door opening switch, attended door Closing Switch, alarm lamp.8051 single-chip microcomputers have the feature of low-power consumption and low voltage operating pattern, can utilize battery to system power supply.Attended door is opened the input (I/O interface) of switch 1 at one end electrical connection single-chip microcomputer away from power supply, and attended door Closing Switch 2 is at the input (I/O interface) of one end electrical connection single-chip microcomputer away from power supply; It is evident that, in the time that attended door is opened switch opens or attended door Closing Switch and opened, do not have signal to be input in single-chip microcomputer.In the time that attended door is opened switch closure or attended door Closing Switch closure, there is the signal of telecommunication to be input in single-chip microcomputer.Single-chip microcomputer is by judging the state of two switches to the identification of signal.
In conjunction with Fig. 1, in this bus door anti-jamming device, be also provided with pressure sensor, voltage comparator, single-chip microcomputer and alarm lamp.The output of this pressure sensor is electrically connected the input of described voltage comparator, and the output of this voltage comparator is electrically connected the input of described single-chip microcomputer; The output electrical connection alarm lamp of this single-chip microcomputer.In the utility model embodiment, pressure comparator is arranged on the bus door step place that gets on or off the bus, and this pressure sensor adopts the resistance strain gage pressure sensor of BF series.This voltage comparator is LT311 type voltage comparator, and alarm lamp is LED lamp (being for example red LED lamp).With reference to Fig. 2, it is the workflow schematic diagram of a kind of bus door anti-jamming device of the present utility model.In the utility model embodiment, pressure comparator gathers the get on or off the bus pressure data at step place of bus door, and change this pressure data into voltage signal, then voltage signal is carried out to voltage ratio by voltage comparator, voltage comparator is sent to output signal in single-chip microcomputer, single-chip microcomputer is according to the level height of this output signal, judges whether the bus door step place that gets on or off the bus has people.Concrete principle is: when bus door get on or off the bus step place nobody time, the voltage signal amplitude of pressure comparator output is lower, through voltage comparator relatively after output low level.When bus door is got on or off the bus step place while having people, the voltage signal amplitude of pressure comparator output is higher, exports high level through voltage comparator after relatively.In the utility model embodiment, alarm lamp is positioned on driver's operation bench.The output electrical connection alarm lamp of single-chip microcomputer, gets on or off the bus step place while having people when single-chip microcomputer judge bus door, and control alarm lamp is luminous, after driver finds, can know corresponding situation, now can not press attended door Closing Switch, thereby avoid occurring crushing people's situation.Preferably, in conjunction with Fig. 1, in this bus door anti-jamming device, be also provided with closed type relay, the auxiliary switch of this closed type relay is serially connected between power supply and attended door Closing Switch 2, and the output of this single-chip microcomputer connects the control end of closed type relay.At ordinary times, the auxiliary switch of closed type relay is in closure state, and driver can be opened switch 1 and attended door Closing Switch 2 and controlled by attended door the on off state of car door.But, when judging bus door, single-chip microcomputer gets on or off the bus step place while having people, and Single-chip Controlling alarm lamp is luminous, meanwhile, controls the duty of conversion closed type relay, and the auxiliary switch of this closed type relay becomes open mode.Now, driver is in the time pressing attended door and open switch, and car door can normally be opened.Driver is in the time pressing attended door Closing Switch, and car door controller can not be controlled closing of the door, thereby at this moment, can realize and forbid closing of the door.
In the utility model embodiment, be also provided with signal amplifier, signal amplifier is connected between voltage comparator and single-chip microcomputer, for the output signal of voltage comparator is amplified, for exporting the signal after amplifying to single-chip microcomputer.After signal amplifies, be more convenient to single-chip microcomputer and carry out data processing.For example, signal amplifier can adopt triode to realize.
With reference to Fig. 3, it is the specific embodiment electrical block diagram of pressure sensor of the present utility model and voltage comparator.This pressure sensor operating principle is: be adsorbed on strain resistor on pressure sensor matrix material and produce change in resistance with mechanical deformation, in this device, pressure sensor is arranged on the step place that gets on or off the bus before car door, can measure the step place that gets on or off the bus near the situation of the gravity that carry deathtrap of car door, and be converted into voltage signal.In conjunction with Fig. 3, this pressure sensor comprises the first resistance R 0, the second resistance R 1, the 3rd resistance R 2 and variable resistor Rx, and the first resistance R 0, the second resistance R 1, the 3rd resistance R 2 and variable resistor Rx form Wheatstone bridge.An input (common node of the first resistance R 0, the second resistance R 1) of Wheatstone bridge connects one end of change-over switch K, the other end access VCC dc source of change-over switch K; Another input (common node of the 3rd resistance R 2 and variable resistor Rx) of Wheatstone bridge.Voltage comparator U adopts LT311 type voltage comparator, and this voltage comparator, for two magnitudes of voltage of comparative pressure sensor assembly output, is exported corresponding low and high level voltage.An output (common node of the first resistance R 0 and variable resistor Rx) of the in-phase input end electrical connection Wheatstone bridge of voltage comparator U, another output (common node of the second resistance R 1, the 3rd resistance R 2) of the inverting input electrical connection Wheatstone bridge of voltage comparator U.In the utility model embodiment, change-over switch K is for controlling the duty of voltage comparator and pressure sensor, and in the time that change-over switch K disconnects, voltage comparator and pressure sensor are not worked.In the time that change-over switch K is closed, voltage comparator and pressure sensor can normally be worked.In the time having people on the step of getting on or off the bus before car door, pressure sensor collects corresponding voltage signal, and pressure sensor pressure drag changes (change in resistance that is variable resistor Rx in electric bridge), and voltage U 1, the U2 at Wheatstone bridge two ends are changed.Voltage comparator LM311 has two inputs: in-phase input end and inverting input.When in-phase input end voltage is during higher than inverting input, be output as high level, when inverting input terminal voltage is during higher than in-phase input end, be output as low level.The initial value that Wheatstone bridge original state Rx is slightly less than for example Rx of R0R1/R2(is 098 R0R1/R2) the state of value, voltage comparator output is low level, in the time having people before car door, when Rx becomes large, it is large that the value of U1 becomes, again because the size of U2 is constant, U1>U2 now, comparator output terminal is high level.
According to above content, we can arrange two car doors or two anti-jamming devices with entrance door, and embodiment and embodiment and a car door are similar, no longer repeat at this.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if these amendments of the present utility model and within modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (7)
1. a bus door anti-jamming device, comprise that attended door opens switch (1), attended door Closing Switch (2), electrical connection attended door is opened the power supply of the common node of one end of switch (1) and one end of attended door Closing Switch (2), be electrically connected respectively attended door and open the car door controller of the other end of switch (1) and the other end of attended door Closing Switch (2), it is characterized in that, also comprise voltage comparator, single-chip microcomputer, be arranged on the get on or off the bus pressure sensor at step place of bus door, and be arranged on the alarm lamp on driver's operation bench,
Described attended door is opened the input of switch (1) at one end electrical connection single-chip microcomputer away from power supply, and described attended door Closing Switch (2) is at the input of one end electrical connection single-chip microcomputer away from power supply; The output of described pressure sensor is electrically connected the input of described voltage comparator, and the output of described voltage comparator is electrically connected the input of described single-chip microcomputer; The output electrical connection alarm lamp of described single-chip microcomputer.
2. a kind of bus door anti-jamming device as claimed in claim 1, it is characterized in that, also comprise closed type relay, the auxiliary switch of described closed type relay is serially connected between power supply and attended door Closing Switch (2), and the output of described single-chip microcomputer connects the control end of closed type relay.
3. a kind of bus door anti-jamming device as claimed in claim 1, is characterized in that, described alarm lamp is LED lamp.
4. a kind of bus door anti-jamming device as claimed in claim 1, is characterized in that, also comprises signal amplifier, and the output of described voltage comparator is electrically connected the input of described single-chip microcomputer by described signal amplifier.
5. a kind of bus door anti-jamming device as claimed in claim 1, is characterized in that, described single-chip microcomputer is 8051 single-chip microcomputers of MCS-51 series.
6. a kind of bus door anti-jamming device as claimed in claim 1, is characterized in that, described pressure sensor is resistance strain gage pressure sensor.
7. a kind of bus door anti-jamming device as claimed in claim 1, is characterized in that, described voltage comparator is LT311 type voltage comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739249.5U CN203640490U (en) | 2013-11-19 | 2013-11-19 | Anti-pinch device for bus door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320739249.5U CN203640490U (en) | 2013-11-19 | 2013-11-19 | Anti-pinch device for bus door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640490U true CN203640490U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320739249.5U Expired - Fee Related CN203640490U (en) | 2013-11-19 | 2013-11-19 | Anti-pinch device for bus door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640490U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216629A (en) * | 2015-10-20 | 2016-01-06 | 重庆五洲龙新能源汽车有限公司 | For control system and the control method thereof of electric bus |
| CN105291976A (en) * | 2015-11-18 | 2016-02-03 | 浙江工商职业技术学院 | Informatization safety alarm system |
| CN105442974A (en) * | 2016-01-04 | 2016-03-30 | 郑州朗睿科技有限公司 | Door closing clamping-prevention controller |
| CN106724195A (en) * | 2017-02-28 | 2017-05-31 | 深圳市美力王家具塑胶五金有限公司 | A kind of intelligentized Furniture preventing damage electronic control system |
-
2013
- 2013-11-19 CN CN201320739249.5U patent/CN203640490U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216629A (en) * | 2015-10-20 | 2016-01-06 | 重庆五洲龙新能源汽车有限公司 | For control system and the control method thereof of electric bus |
| CN105291976A (en) * | 2015-11-18 | 2016-02-03 | 浙江工商职业技术学院 | Informatization safety alarm system |
| CN105442974A (en) * | 2016-01-04 | 2016-03-30 | 郑州朗睿科技有限公司 | Door closing clamping-prevention controller |
| CN106724195A (en) * | 2017-02-28 | 2017-05-31 | 深圳市美力王家具塑胶五金有限公司 | A kind of intelligentized Furniture preventing damage electronic control system |
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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 |
Granted publication date: 20140611 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |