CN103568937B - A kind of school bus stop signpost controls device - Google Patents
A kind of school bus stop signpost controls device Download PDFInfo
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- CN103568937B CN103568937B CN201310558652.2A CN201310558652A CN103568937B CN 103568937 B CN103568937 B CN 103568937B CN 201310558652 A CN201310558652 A CN 201310558652A CN 103568937 B CN103568937 B CN 103568937B
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Abstract
The present invention relates to a kind of school bus stop signpost and control device.A kind of school bus stop signpost controls device and includes microcontroller, controls motor, controls electric-motor drive unit, position signalling unit, gate-control signal unit, brake signal unit, control signal unit, GES unit harmony optical signal cell.First microcontroller obtain each signal element gather information, to information analysis and judgment and send control signal make control electric-motor drive unit drive control motor work.Secondly according to the control signal received, control driven by motor stop signpost and stretch out or be retracted into appointment position.Stop signpost positional information is sent to microcontroller by position signalling unit again, and the duty controlling motor harmony optical signal cell is controlled by microcontroller.School bus stop signpost not only can be carried out automatically accurately controlling by the present invention, goes back lockable position, decreases the burden of driver, improve traffic safety.
Description
Technical field
The present invention relates to automobile power control and detection technique field, be specifically related to a kind of school bus stop signpost and control device.
Background technology
School bus is the vehicles coming and going school for receiving student, and according to National Standard of the People's Republic of China's GB24407-2012 clear stipulaties, special school bus must install stop signpost, in order to ensure the traffic safety of student.When school bus stops upper and lower student in various road conditions temporarily, stop signpost is stretched out to 90 degree of the front upset of vehicle, simultaneously warning lamp flicker, and buzzer synchronizes buzzing, to remind front vehicle to keep safe distance between vehicles, stop-for-waiting；When school bus moves forward, stop signpost is packed up to the rear of vehicle, it is to avoid there is potential safety hazard.Stop signpost controls device and is often driven by high power motor, is equipped with turbine and worm decelerator, drive deceleration mechanism, drives stop board to turn to corresponding position.Owing to the gap of driving mechanism exists, after working long hours, stop signpost can be formed rocks gap, or meets the position skew that rotates when external force stops, it is necessary to driver artificially adjusts.When frequently stopping, it is necessary to driver constantly goes to control stop board and stretches out or pack up, and can affect driver and normally drive, sometimes because driver neglects, it is impossible to ensure that stop board is stretched out reliably or packs up, bring hidden danger to safe driving.
Summary of the invention
It is an object of the invention to provide a kind of school bus stop signpost and control device and control method thereof, school bus stop signpost not only can be carried out automatically, be accurately controlled by this control device and control method thereof, the position of stop signpost can also be locked, decrease the burden of driver, improve school bus traffic safety.
For achieving the above object, present invention employs techniques below scheme: a kind of school bus stop signpost controls device, including microcontroller, for the control motor driving stop signpost to stretch out or to pack up, control electric-motor drive unit, position signalling unit, gate-control signal unit, brake signal unit, control signal unit, GES unit harmony optical signal cell.Described control signal unit, position signalling unit, gate-control signal unit, brake signal unit are all connected with the input of microcontroller with the outfan of GES unit, the described input of sound and light signal unit is connected with the outfan of microcontroller, the outfan of described microcontroller is connected with the input controlling electric-motor drive unit, and the described outfan controlling electric-motor drive unit is connected with the input controlling motor being used for driving stop signpost to move.Described control electric-motor drive unit is connected with power supply.
Described control electric-motor drive unit is connected with power supply.
Described control motor is motor.
Described control motor is DC brushless motor.
Described control electric-motor drive unit includes drive circuit and H drive axle, described drive circuit is used for isolating, changing microcontroller signal and drive H drive axle to work, described drive circuit is connected with microcontroller, the input of described H drive axle is connected with drive circuit, and the outfan of described H drive axle is connected with motor.
Described control electric-motor drive unit is power semiconductor commutating circuit.Preferably, described power semiconductor is IGBT insulated gate bipolar transistor.
The invention still further relates to a kind of above-mentioned school bus stop signpost and control the control method of device, this control method comprises the following steps:
(1) microcontroller obtains the data that gate-control signal unit, brake signal unit, control signal unit and GES unit gather in real time；
(2) data obtained are analyzed judging by microcontroller, and send control signal to controlling electric-motor drive unit, control electric-motor drive unit driving and control motor work, control driven by motor stop signpost and stretch out or be retracted into appointment position；
(3) positional information of stop signpost is sent to microcontroller by position signalling unit, and microcontroller sends control signals to control motor harmony optical signal cell, and the state controlling motor harmony optical signal cell is controlled.
Further, according to step (2) and step (3), when microcontroller receives the information stretching out stop signpost that control signal unit sends, or when being successively received the brake signal stepped on of brake pedal that brake signal unit sends and the opening signal that gate controlled switch unit sends when microcontroller, microcontroller will send control signal to controlling electric-motor drive unit, make control electric-motor drive unit drive and control motor work, control driven by motor stop signpost and reach appointment position；
When microcontroller send control signal drive stop signpost stretch out arrival specific bit put time, microcontroller send simultaneously control signal drive sound and light signal unit carry out sound and light alarm；
Stretch out arrival specific bit when stop signpost to postpone, the positional information stretching out arrival of stop signpost is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, can determine whether out that stop signpost has reached appointment position, microcontroller just sends control signal to controlling motor plus locking torque, make its latched position when stall, thus ensureing that stop signpost is not rocked.
Further, according to step (2) and step (3), when microcontroller receive control signal unit send the information packing up stop signpost and gate controlled switch unit send shutdown signal time, or when microcontroller receives the speed of GES unit transmission more than setting value, microcontroller will send control signal to controlling electric-motor drive unit, make control electric-motor drive unit drive and control motor work, control driven by motor stop signpost and be retracted into appointment position；
When microcontroller send control signal drive stop signpost pack up arrival specific bit put time, microcontroller send simultaneously control signal drive sound and light signal unit stop sound and light alarm；
Pack up arrival specific bit when stop signpost to postpone, stop signpost is packed up the positional information of arrival and is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, can determine whether out that stop signpost has been retracted into appointment position, microcontroller just sends control signal to controlling electric-motor drive unit so that it is drive control motor to quit work.
Further, when described control motor is motor, microcontroller sends control signal to drive circuit, and the control signal after isolation, conversion is sent to H drive axle by drive circuit, make it produce step-by-step impulse, and drive motor work by the number of steps specified；
When described control motor is DC brushless motor, microcontroller sends control signal to power semiconductor commutating circuit, makes power semiconductor commutating circuit control torque and the rotating speed of DC brushless motor, drives DC brushless motor work.
Advantages of the present invention:
(1) present invention is by arranging position signalling unit, gate-control signal unit, brake signal unit, control signal unit and the GES unit being connected with microcontroller, stop signpost accurately can be automatically controlled, not only offer convenience to driver, moreover it is possible to improve the safety of driving.By arranging position signalling unit, the positional information of stop signpost can be fed back to microcontroller in time, make microcontroller pass through, to controlling motor transmission control signal, drive stop signpost to stretch out or be recovered to appointment position.By arranging gate-control signal unit, the on off state of car door can be acquired and be uploaded to microcontroller；By arranging brake signal unit, the brake pedal status of school bus can be acquired and be uploaded to microcontroller；By control signal unit, the operating process controlling switch can be acquired and is uploaded to microcontroller by driver；By arranging GES unit, the speed of school bus can be detected and be uploaded to microcontroller；By the information that each signal element gathers, and by rational criterion, the running condition information of school bus is carried out comprehensively, judges accurately, so that stop signpost can carry out stretching out or packing up in suitable time, place according to practical situation automatically, improves travel safety.
(2) microcontroller of the present invention by being analyzed judgement to the positional information of the stop signpost of position signalling unit collection, when judging that stop signpost has reached appointment position, microcontroller just sends control signal to controlling motor plus locking torque, make its latched position when stall, stop to rock gap, so that stop signpost locking position does not rock.
(3) present invention is by adopting bipolarity Multi-level microstep motor or DC brushless motor to be controlled, bipolarity Multi-level microstep motor can realize controlling angle and the speed controlling of motor in driver signal input input pulse quantity and frequency, only small stepping angle can be realized, it is achieved Accurate Position Control.DC brushless motor has that rotary inertia is little, fast response time, structural reliability height, good speed adjustment features, feature that work efficiency is high, the control signal that rapidly microcontroller can be sent responds, and can the shift position of stop signpost be accurately controlled.
In sum, school bus stop signpost not only can be carried out automatically, be accurately controlled by the present invention, moreover it is possible to the position of stop signpost is locked, decreases the burden of driver, improve school bus traffic safety.
Accompanying drawing explanation
Fig. 1 is the structural representation controlling device of the present invention；
Fig. 2 is the flow chart of the control method of the present invention；
Fig. 3 is the control driver element schematic diagram in embodiment 1；
Fig. 4 is the control driver element schematic diagram in embodiment 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
Embodiment 1
A kind of school bus stop signpost as shown in Figure 1 controls device, including microcontroller, for the control motor driving stop signpost to stretch out or to pack up, control electric-motor drive unit, position signalling unit, gate-control signal unit, brake signal unit, control signal unit, GES unit harmony optical signal cell.Described control signal unit, position signalling unit, gate-control signal unit, brake signal unit are all connected with the input of microcontroller with the outfan of GES unit, the described input of sound and light signal unit is connected with the outfan of microcontroller, the outfan of described microcontroller is connected with the input controlling electric-motor drive unit, and the described outfan controlling electric-motor drive unit is connected with the input controlling motor being used for driving stop signpost to move.Described control electric-motor drive unit is connected with power supply.
Each signal element is centered by controlling dress in stop signpost, the stop signpost positional information of school bus, brake pedal on-position information, door contact interrupter status information, control on-off control information and speed information can be carried out signals collecting, then comprehensive comprehensively analysis is carried out, such that it is able to improve the time accuracy that stop signpost is stretched out or packed up.By arranging control electric-motor drive unit and controlling motor, make control motor under the control of the micro-controller, it is achieved highly sensitive rotation, such that it is able to raising stop signpost is stretched out or the accuracy of stowed position.
By arranging position signalling unit, the positional information of stop signpost can be fed back to microcontroller in time, make microcontroller pass through, to controlling motor transmission control signal, drive stop signpost to stretch out or be recovered to appointment position.By arranging gate-control signal unit, the on off state of car door can be acquired and be uploaded to microcontroller；By arranging brake signal unit, the brake pedal status of school bus can be acquired and be uploaded to microcontroller；By control signal unit, the operating process controlling switch can be acquired and is uploaded to microcontroller by driver；By arranging GES unit, the speed of school bus can be detected and be uploaded to microcontroller；By the information that each signal element gathers, and by rational criterion, the running condition information of school bus is carried out comprehensively, judges accurately, so that stop signpost can carry out stretching out or packing up in suitable time, place according to practical situation automatically, improves travel safety.
Further, described control motor is motor.When described control motor is motor, described control electric-motor drive unit includes drive circuit and H drive axle, described drive circuit is used for isolating, changing microcontroller signal and drive H drive axle to work, described drive circuit is connected with microcontroller, the input of described H drive axle is connected with drive circuit, and the outfan of described H drive axle is connected with motor.Preferably, described motor is bipolarity Multi-level microstep motor, bipolarity Multi-level microstep motor can realize controlling angle and the speed controlling of motor in driver signal input input pulse quantity and frequency, it may be achieved only small stepping angle, it is achieved Accurate Position Control.
The schematic diagram controlling electric-motor drive unit as shown in Figure 3; wherein, U1 is the control chip of drive circuit, and U2 is H bridge driving chip; D1 ~ D8 is that J1 is connected with the control winding of motor for preventing the motor protection circuit that the inverse peak voltage of appearance is too high when running or stop.The speed of service of CLK, EA, CW respectively motor of drive circuit control chip U1, enable control, traffic direction controls pin.When pin EA is low level, motor is out of service；When pin EA is high level, pin CLK can control the operation of motor, just can the angle of motor and velocity variations be controlled by the number of pulses and frequency regulating input CLK.Pin CW is used for controlling the traffic direction of motor, and when the level of pin CW changes, the traffic direction of motor just changes therewith.
The invention still further relates to a kind of above-mentioned school bus stop signpost and control the control method of device, as in figure 2 it is shown, this control method comprises the following steps:
(1) microcontroller obtains the data that gate-control signal unit, brake signal unit, control signal unit and GES unit gather in real time；
(2) data obtained are analyzed judging by microcontroller, and send control signal to controlling electric-motor drive unit, control electric-motor drive unit driving and control motor work, control driven by motor stop signpost and stretch out or be retracted into appointment position；
(3) positional information of stop signpost is sent to microcontroller by position signalling unit, and microcontroller sends control signals to control motor harmony optical signal cell, and the state controlling motor harmony optical signal cell is controlled.
Further, when microcontroller receives the information stretching out stop signpost that control signal unit sends, or when being successively received the brake signal stepped on of brake pedal that brake signal unit sends and the opening signal that gate controlled switch unit sends when microcontroller, microcontroller will send control signal to controlling electric-motor drive unit, make control electric-motor drive unit drive and control motor work, control driven by motor stop signpost and reach appointment position；
When microcontroller transmission control signal drives stop signpost to reach appointment position, microcontroller sends control signal simultaneously and drives sound and light signal unit to carry out sound and light alarm；
Stretch out arrival specific bit when stop signpost to postpone, the positional information stretching out arrival of stop signpost is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, can determine whether out that stop signpost has reached appointment position, microcontroller just sends control signal to controlling motor plus locking torque, make its latched position when stall, thus ensureing that stop signpost is not rocked.
Further, when microcontroller receive control signal unit send the information packing up stop signpost and gate controlled switch unit send shutdown signal time, or when microcontroller receives the speed of GES unit transmission more than setting value, microcontroller will send control signal to controlling electric-motor drive unit, make control electric-motor drive unit drive and control motor work, control driven by motor stop signpost and be retracted into appointment position；
When microcontroller transmission control signal drives stop signpost to be retracted into appointment position, microcontroller sends control signal simultaneously and drives sound and light signal unit to stop sound and light alarm；
Pack up arrival specific bit when stop signpost to postpone, stop signpost is packed up the positional information of arrival and is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, can determine whether out that stop signpost has been retracted into appointment position, microcontroller just sends control signal to controlling electric-motor drive unit so that it is drive control motor to quit work.
Further, when described control motor is motor, microcontroller sends control signal to drive circuit, and the control signal after isolation, conversion is sent to H drive axle by drive circuit, make it produce step-by-step impulse, and drive motor work by the number of steps specified；
Embodiment 2
A kind of school bus stop signpost controls device, and described control motor is DC brushless motor.When described control motor is DC brushless motor, described control electric-motor drive unit is power semiconductor commutating circuit.Preferably, described power semiconductor is IGBT insulated gate bipolar transistor, and IGBT has the features such as Heat stability is good, safety operation area be big.
A kind of above-mentioned school bus stop signpost controls the control method of device, when described control motor is DC brushless motor, microcontroller sends control signal to power semiconductor commutating circuit, make power semiconductor commutating circuit control torque and the rotating speed of DC brushless motor, drive DC brushless motor work.
Control driver element as shown in Figure 4, the i.e. schematic diagram of power semiconductor commutating circuit.By adopting power semiconductor commutating circuit to replace brush and diverter to make direct current generator work.Microcontroller accepts position sensor signal and rotating signal, produces to control pulse, by control circuit, is applied to each power tube of inverter bridge, so as on or off, produces continuous torque, makes motor realize controlling and adjusting rotating speed.
The other the same as in Example 1.
In sum, school bus stop signpost of the present invention control device and control method thereof both can manually the stretching out and pack up of Schema control stop signpost, automatic mode can be passed through again and control stretching out and packing up of stop signpost.First, by arranging position signalling unit, gate-control signal unit, brake signal unit, control signal unit and the GES unit being connected with microcontroller, stop signpost accurately can be automatically controlled, not only offer convenience to driver, moreover it is possible to improve the safety of driving.Secondly, microcontroller by being analyzed judgement to the positional information of the stop signpost of position signalling unit collection, when judging that stop signpost has reached appointment position, microcontroller just sends control signal to controlling motor plus locking torque, make its latched position when stall, stop to rock gap, so that stop signpost locking position does not rock.Again, by adopting bipolarity Multi-level microstep motor or DC brushless motor to be controlled, bipolarity Multi-level microstep motor can realize controlling angle and the speed controlling of motor in driver signal input input pulse quantity and frequency, only small stepping angle can be realized, it is achieved Accurate Position Control.DC brushless motor has that rotary inertia is little, fast response time, structural reliability height, good speed adjustment features, feature that work efficiency is high, the control signal that rapidly microcontroller can be sent responds, and can the shift position of stop signpost be accurately controlled.
Embodiment described above is only that the preferred embodiment of the present invention is described; not the scope of the present invention is defined; under the premise designing spirit without departing from the present invention; various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall in the protection domain that claims of the present invention is determined.
Claims (1)
1. a school bus stop signpost controls device, it is characterised in that: include microcontroller, for the control motor driving stop signpost to move, control electric-motor drive unit, control signal unit harmony optical signal cell；The described outfan of control signal unit is connected with the input of microcontroller, the input of described sound and light signal unit is connected with microcontroller output, the outfan of described microcontroller is connected with the input controlling electric-motor drive unit, and the described outfan controlling electric-motor drive unit is connected with the input controlling motor being used for driving stop signpost to move；
Described microcontroller is connected to position signalling unit, gate-control signal unit, brake signal unit and GES unit, and described position signalling unit, gate-control signal unit, brake signal unit are all connected with the input of described microcontroller with the outfan of GES unit；
The described control motor being used for driving stop signpost to move is motor or DC brushless motor；
When the described control motor being used for driving stop signpost to move is motor, described control electric-motor drive unit includes drive circuit and H drive axle, described drive circuit is used for isolating, changing microcontroller signal and drive H drive axle to work, described drive circuit is connected with microcontroller, the input of described H drive axle is connected with drive circuit, and the outfan of described H drive axle is connected with motor；
When the described control motor being used for driving stop signpost to move is DC brushless motor, described control electric-motor drive unit is power semiconductor commutating circuit；
This school bus stop signpost controls device and adopts following control method, and this control method comprises the following steps:
S1, microcontroller obtain the data that gate-control signal unit, brake signal unit, control signal unit and GES unit gather in real time；
The data obtained are analyzed judging by S2, microcontroller, and send control signal to controlling electric-motor drive unit, control electric-motor drive unit driving and control motor work, control driven by motor stop signpost and stretch out or be retracted into appointment position；
The positional information of stop signpost is sent to microcontroller by S3, position signalling unit, and microcontroller sends control signals to control motor harmony optical signal cell, and the state controlling motor harmony optical signal cell is controlled；
The data obtained are analyzed judging by the microcontroller described in step S2, and send control signal to controlling electric-motor drive unit, controlling electric-motor drive unit and drive control motor work, control driven by motor stop signpost is stretched out or is retracted into the detailed process specifying position and is:
If microcontroller receives the information stretching out stop signpost that control signal unit sends, or the opening signal that the brake signal that the brake pedal receiving the transmission of brake signal unit is stepped on and gate controlled switch unit send, then send control signal to controlling electric-motor drive unit, control electric-motor drive unit and drive control motor work, control driven by motor stop signpost and reach appointment position；
If microcontroller receives the information packing up stop signpost of control signal unit transmission and the shutdown signal of gate controlled switch unit transmission, or receive the speed of GES unit transmission more than setting value, then send control signal to controlling electric-motor drive unit, control electric-motor drive unit and drive control motor work, control driven by motor stop signpost and be retracted into appointment position；
The positional information of stop signpost is sent to microcontroller by the position signalling unit described in step S3, and microcontroller sends control signals to control motor harmony optical signal cell, and the detailed process that the state controlling motor harmony optical signal cell is controlled is:
If stop signpost stretches out arrival, specific bit is put, then the positional information of stop signpost is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, judge that stop signpost has reached appointment position, microcontroller sends control signal to controlling motor harmony optical signal cell, controlling motor plus locking torque, sound and light signal unit carries out sound and light alarm；
If stop signpost packs up arrival, specific bit is put, then the positional information of stop signpost is sent to microcontroller by position signalling unit, the information that microcontroller sends according to position signalling unit, judge that stop signpost has been retracted into appointment position, microcontroller sends control signal to controlling electric-motor drive unit harmony optical signal cell, controlling electric-motor drive unit drives control motor to quit work, and sound and light signal unit stops sound and light alarm.
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| CN201310558652.2A CN103568937B (en) | 2013-11-12 | 2013-11-12 | A kind of school bus stop signpost controls device |
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| CN201310558652.2A CN103568937B (en) | 2013-11-12 | 2013-11-12 | A kind of school bus stop signpost controls device |
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| CN103568937A CN103568937A (en) | 2014-02-12 |
| CN103568937B true CN103568937B (en) | 2016-07-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138668A (en) * | 1977-10-12 | 1979-02-06 | said Joseph E. Latta, Jr. | School bus stop sign |
| CN102756685A (en) * | 2012-07-16 | 2012-10-31 | 中通客车控股股份有限公司 | Special parking arm controller for school bus |
| CN103241198A (en) * | 2013-05-10 | 2013-08-14 | 江苏友谊汽车有限公司 | Control circuit for stretching and retraction of stop sign on school bus |
| CN103273879A (en) * | 2013-05-17 | 2013-09-04 | 柳州职业技术学院 | Automatic controller of indicating board for school bus parking |
| CN103303193A (en) * | 2012-03-13 | 2013-09-18 | 杭州杭正电子科技有限公司 | Stop board with locking function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7186205B2 (en) * | 2004-12-14 | 2007-03-06 | International Truck Intellectual Property Compay, LLC | Vehicle lift interlock |
-
2013
- 2013-11-12 CN CN201310558652.2A patent/CN103568937B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138668A (en) * | 1977-10-12 | 1979-02-06 | said Joseph E. Latta, Jr. | School bus stop sign |
| CN103303193A (en) * | 2012-03-13 | 2013-09-18 | 杭州杭正电子科技有限公司 | Stop board with locking function |
| CN102756685A (en) * | 2012-07-16 | 2012-10-31 | 中通客车控股股份有限公司 | Special parking arm controller for school bus |
| CN103241198A (en) * | 2013-05-10 | 2013-08-14 | 江苏友谊汽车有限公司 | Control circuit for stretching and retraction of stop sign on school bus |
| CN103273879A (en) * | 2013-05-17 | 2013-09-04 | 柳州职业技术学院 | Automatic controller of indicating board for school bus parking |
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