CN103568937A - School bus parking signpost control device and control method - Google Patents
School bus parking signpost control device and control method Download PDFInfo
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- CN103568937A CN103568937A CN201310558652.2A CN201310558652A CN103568937A CN 103568937 A CN103568937 A CN 103568937A CN 201310558652 A CN201310558652 A CN 201310558652A CN 103568937 A CN103568937 A CN 103568937A
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Abstract
The invention relates to a school bus parking signpost control device and control method. The school bus parking signpost control device comprises a microcontroller, a control motor, a control motor driving unit, a position signal unit, a gating signal unit, a brake signal unit, a control signal unit, a bus speed signal unit and an acoustic-optical signal unit. Firstly, information collected by the signal units is obtained by the microcontroller, the information is analyzed and judged, and a control signal is transmitted to enable the control motor driving unit to drive the control motor to work; secondly, the control motor drives a parking signpost to extend out of or retract to the designated position according to the received control signal; thirdly, position information of a parking signpost is transmitted to the microcontroller through the position signal unit, and the microcontroller controls the working states of the control motor and the acoustic-optical signal unit. According to the school bus parking signpost control device and the control method of the school bus parking signpost control device, the school bus parking signpost can be automatically and accurately controlled, the position can be further locked, loads of a driver are reduced, and the traveling safety is improved.
Description
Technical field
The present invention relates to automobile power and control and detection technique field, be specifically related to a kind of school bus stop signpost control setup and control method thereof.
Background technology
School bus is for receiving student, to come and go the vehicle of school, according to State Standard of the People's Republic of China GB24407-2012, clearly stipulates, special-purpose school bus must be installed stop signpost, in order to guarantee student's safety traffic.When school bus is when various road conditions are stopped upper and lower student temporarily, stop signpost is stretched out to the place ahead 90 degree upsets of vehicle, and Warning light glimmers simultaneously, the synchronous buzzing of buzzer phone, and to remind front vehicle to remain a safe distance behind the car in front, stop-for-waiting; When school bus is to overtake time, stop signpost is packed up to the rear of vehicle, avoids existing potential safety hazard.Stop signpost control setup is often driven by high power motor, is equipped with turbine and worm retarder, drives speed reduction gearing, drives red board to turn to corresponding position.Because the gap of driver train exists, after working long hours, stop signpost can form rocks gap, or meets the position skew that rotates when external force stops, and needs chaufeur artificially to adjust.When frequent parking, need chaufeur constantly to go to control red board and stretch out or pack up, can affect chaufeur and normally drive, sometimes because chaufeur carelessness can not guarantee that red board failure-free stretches out or packs up, and brings hidden danger to safe driving.
Summary of the invention
The object of the present invention is to provide a kind of school bus stop signpost control setup and control method thereof, this control setup and control method thereof not only can carry out automatically school bus stop signpost, control accurately, can also lock the position of stop signpost, reduce the burden of chaufeur, improved school bus traffic safety.
For achieving the above object, the present invention has adopted following technical scheme: a kind of school bus stop signpost control setup, comprises microcontroller, the control motor for driving stop signpost to stretch out or pack up, control electric-motor drive unit, position signal unit, gate-control signal unit, speed-slackening signal unit, control signal unit, vehicle speed signal unit harmony optical signal cell.The mouth of described control signal unit, sound and light signal unit, position signal unit, gate-control signal unit, speed-slackening signal unit and vehicle speed signal unit is all connected with the input end of microcontroller, the mouth of described microcontroller is connected with the input end of controlling electric-motor drive unit, the mouth of described control electric-motor drive unit with for driving the input end of the control motor that stop signpost moves to be connected.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 stepping motor.
Described control motor is DC brushless motor.
Described control electric-motor drive unit comprises driving circuit and H drive axle, described driving circuit is for isolation, conversion microcontroller signal and drive the work of H drive axle, described driving circuit is connected with microcontroller, the input end of described H drive axle is connected with driving circuit, and the mouth of described H drive axle is connected with stepping motor.
Described control electric-motor drive unit is power semiconductor commutating circuit.Preferably, described power semiconductor is IGBT insulated gate bipolar transistor.
The control method that the invention still further relates to a kind of above-mentioned school bus stop signpost control setup, this control method comprises the following steps:
(1) data that microcontroller Real-time Obtaining gate-control signal unit, speed-slackening signal unit, control signal unit and vehicle speed signal unit gather;
(2) microcontroller is to the data analysis judgement of obtaining, and transmits control signal to controlling electric-motor drive unit, controls electric-motor drive unit and drives and control machine operation, controls driven by motor stop signpost and stretches out or be retracted into assigned address;
(3) position signal unit sends to microcontroller by the location information of stop signpost, and microcontroller sends control signals to controls motor harmony optical signal cell, to controlling the state of motor harmony optical signal cell, controls.
Further, described in step (2) and step (3), when microcontroller receive that control signal unit sends stretch out the information of stop signpost time, or when microcontroller receives the opening signal that speed-slackening signal that brake pedal that speed-slackening signal unit sends steps on and door contact unit send in succession, microcontroller will transmit control signal to controlling electric-motor drive unit, make to control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and reach assigned address;
When microcontroller transmits control signal while driving stop signpost to stretch out to arrive assigned address, microcontroller transmits control signal simultaneously and drives sound and light signal unit to carry out sound and light alarm;
When stop signpost, stretch out and arrive after assigned address, position signal unit sends to microcontroller by the location information of stretching out arrival of stop signpost, the information that microcontroller sends according to position signal unit, can judge stop signpost and reach assigned address, microcontroller just transmits control signal and adds locking torque to controlling motor, make its latched position when stall, thereby assurance stop signpost is not rocked.
Further, described in step (2) and step (3), when microcontroller receives the information of packing up stop signpost of control signal unit transmission and the closing signal of door contact unit transmission, or when microcontroller receives the speed of a motor vehicle that vehicle speed signal unit sends and is greater than setting value, microcontroller will transmit control signal to controlling electric-motor drive unit, make to control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and be retracted into assigned address;
When microcontroller transmits control signal while driving stop signpost to pack up to arrive assigned address, microcontroller transmits control signal simultaneously and drives sound and light signal unit to stop sound and light alarm;
When stop signpost, pack up and arrive after assigned address, the location information that arrival is packed up by stop signpost in position signal unit sends to microcontroller, the information that microcontroller sends according to position signal unit, can judge stop signpost and be retracted into assigned address, microcontroller just transmits control signal to controlling electric-motor drive unit, makes it drive control motor to quit work.
Further, when described control motor is stepping motor, microcontroller transmits control signal to driving circuit, and driving circuit sends to H drive axle by the control signal after isolation, conversion, make it produce step-by-step impulse, and drive stepping motor work by the number of steps of appointment;
When described control motor is DC brushless motor, microcontroller transmits control signal to power semiconductor commutating circuit, makes power semiconductor commutating circuit control the torque and rotational speed of DC brushless motor, drives DC brushless motor work.
Advantage of the present invention:
(1) the present invention is by arranging position signal unit, gate-control signal unit, speed-slackening signal unit, control signal unit and the vehicle speed signal unit being connected with microcontroller, can carry out accurately automatically controlling to stop signpost, not only to chaufeur, offer convenience, can also improve the safety of driving.By setting position signal element, the location information of stop signpost can be fed back to microcontroller in time, microcontroller is transmitted control signal by give controlling motor, drive stop signpost to stretch out or be recovered to assigned address.By gate-control signal unit is set, can gather and be uploaded to microcontroller to the on off state of car door; By speed-slackening signal unit is set, can gather and be uploaded to microcontroller to the brake pedal status of school bus; By control signal unit, can to the operating process of master cock, gather and be uploaded to microcontroller to chaufeur; By vehicle speed signal unit is set, can detect and be uploaded to microcontroller to the speed of a motor vehicle of school bus; The information gathering by each signal element, and by rational criterion, motoring condition information to school bus is carried out comprehensively, judgement accurately, thereby makes stop signpost in suitable time, place, automatically stretch out or to pack up according to actual conditions, improves travel safety.
(2) microcontroller of the present invention is by analyzing judgement to the location information of the stop signpost of position signal element collection, when judging stop signpost and reached assigned address, microcontroller just transmits control signal and adds locking torque to controlling motor, make its latched position when stall, stopped to rock gap, thereby stop signpost locking position is not rocked.
(3) the present invention is by adopting bipolarity segmentation Driving Stepping Motor or DC brushless motor to control, bipolarity segmentation Driving Stepping Motor can be realized angle and the speed control of controlling motor in driver signal input end input pulse quantity and frequency, can realize very little stepping angle, realize Accurate Position Control.DC brushless motor has that rotor inertia is little, fast response time, structural reliability are high, good speed adjustment features, feature that work efficiency is high, the control signal that can send microcontroller is rapidly made response, and can control accurately the shift position of stop signpost.
In sum, the present invention not only can carry out automatically school bus stop signpost, control accurately, can also lock the position of stop signpost, has reduced the burden of chaufeur, has improved school bus traffic safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of control setup of the present invention;
Fig. 2 is the diagram of circuit of 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.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
A kind of school bus stop signpost control setup as shown in Figure 1, comprises microcontroller, the control motor for driving stop signpost to stretch out or pack up, control electric-motor drive unit, position signal unit, gate-control signal unit, speed-slackening signal unit, control signal unit, vehicle speed signal unit harmony optical signal cell.The mouth of described control signal unit, sound and light signal unit, position signal unit, gate-control signal unit, speed-slackening signal unit and vehicle speed signal unit is all connected with the input end of microcontroller, the mouth of described microcontroller is connected with the input end of controlling electric-motor drive unit, the mouth of described control electric-motor drive unit with for driving the input end of the control motor that stop signpost moves to be connected.Described control electric-motor drive unit is connected with power supply.
By each signal element is set in stop signpost control setup, can carry out acquisition of signal to the stop signpost location information of school bus, brake pedal braking mode information, door contact interrupter status information, master cock control information and speed information, then carry out comprehensive comprehensively analysis, thereby can improve the time accuracy that stop signpost is stretched out or packed up.By arranging, control electric-motor drive unit and control motor, making to control motor under the control of microcontroller, realizing highly sensitive rotation, thereby can improve, stop signpost is stretched out or the particularity of stowed position.
By setting position signal element, the location information of stop signpost can be fed back to microcontroller in time, microcontroller is transmitted control signal by give controlling motor, drive stop signpost to stretch out or be recovered to assigned address.By gate-control signal unit is set, can gather and be uploaded to microcontroller to the on off state of car door; By speed-slackening signal unit is set, can gather and be uploaded to microcontroller to the brake pedal status of school bus; By control signal unit, can to the operating process of master cock, gather and be uploaded to microcontroller to chaufeur; By vehicle speed signal unit is set, can detect and be uploaded to microcontroller to the speed of a motor vehicle of school bus; The information gathering by each signal element, and by rational criterion, motoring condition information to school bus is carried out comprehensively, judgement accurately, thereby makes stop signpost in suitable time, place, automatically stretch out or to pack up according to actual conditions, improves travel safety.
Further, described control motor is stepping motor.When described control motor is stepping motor, described control electric-motor drive unit comprises driving circuit and H drive axle, described driving circuit is for isolation, conversion microcontroller signal and drive the work of H drive axle, described driving circuit is connected with microcontroller, the input end of described H drive axle is connected with driving circuit, and the mouth of described H drive axle is connected with stepping motor.Preferably, described stepping motor is bipolarity segmentation Driving Stepping Motor, bipolarity segmentation Driving Stepping Motor can be realized angle and the speed control of controlling motor in driver signal input end input pulse quantity and frequency, can realize very little stepping angle, realizes Accurate Position Control.
The schematic diagram of control electric-motor drive unit as shown in Figure 3; wherein, the control chip that U1 is driving circuit, U2 is that H bridge drives chip; D1 ~ D8 is the too high protective circuit of peak inverse voltage for preventing that motor from occurring when moving or stopping, and the control winding of J1 and stepping motor is connected.The running velocity that CLK, the EA of driving circuit control chip U1, CW are respectively motor, enable to control, service 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, inputs number of pulses and the frequency of CLK just can control the angle of stepping motor and velocity variations by adjusting.Pin CW is used for controlling the service direction of motor, and when the level of pin CW changes, the service direction of motor just changes thereupon.
The control method that the invention still further relates to a kind of above-mentioned school bus stop signpost control setup, as shown in Figure 2, this control method comprises the following steps:
(1) data that microcontroller Real-time Obtaining gate-control signal unit, speed-slackening signal unit, control signal unit and vehicle speed signal unit gather;
(2) microcontroller is to the data analysis judgement of obtaining, and transmits control signal to controlling electric-motor drive unit, controls electric-motor drive unit and drives and control machine operation, controls driven by motor stop signpost and stretches out or be retracted into assigned address;
(3) position signal unit sends to microcontroller by the location information of stop signpost, and microcontroller sends control signals to controls motor harmony optical signal cell, to controlling the state of motor harmony optical signal cell, controls.
Further, when microcontroller receive that control signal unit sends stretch out the information of stop signpost time, or when microcontroller receives the opening signal that speed-slackening signal that brake pedal that speed-slackening signal unit sends steps on and door contact unit send in succession, microcontroller will transmit control signal to controlling electric-motor drive unit, make to control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and reach assigned address;
When microcontroller transmits control signal while driving stop signpost to reach assigned address, microcontroller transmits control signal simultaneously and drives sound and light signal unit to carry out sound and light alarm;
When stop signpost, stretch out and arrive after assigned address, position signal unit sends to microcontroller by the location information of stretching out arrival of stop signpost, the information that microcontroller sends according to position signal unit, can judge stop signpost and reach assigned address, microcontroller just transmits control signal and adds locking torque to controlling motor, make its latched position when stall, thereby assurance stop signpost is not rocked.
Further, when microcontroller receives the information of packing up stop signpost of control signal unit transmission and the closing signal of door contact unit transmission, or when microcontroller receives the speed of a motor vehicle that vehicle speed signal unit sends and is greater than setting value, microcontroller will transmit control signal to controlling electric-motor drive unit, make to control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and be retracted into assigned address;
When microcontroller transmits control signal while driving stop signpost to be retracted into assigned address, microcontroller transmits control signal simultaneously and drives sound and light signal unit to stop sound and light alarm;
When stop signpost, pack up and arrive after assigned address, the location information that arrival is packed up by stop signpost in position signal unit sends to microcontroller, the information that microcontroller sends according to position signal unit, can judge stop signpost and be retracted into assigned address, microcontroller just transmits control signal to controlling electric-motor drive unit, makes it drive control motor to quit work.
Further, when described control motor is stepping motor, microcontroller transmits control signal to driving circuit, and driving circuit sends to H drive axle by the control signal after isolation, conversion, make it produce step-by-step impulse, and drive stepping motor work by the number of steps of appointment;
A stop signpost control setup, 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, clear working place be large.
A kind of control method of above-mentioned school bus stop signpost control setup, when described control motor is DC brushless motor, microcontroller transmits control signal to power semiconductor commutating circuit, make power semiconductor commutating circuit control the torque and rotational 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 commutator that DC machine is worked.Microcontroller is accepted position sensor signal and rotating signal, produces control wave, by control circuit, is applied to each power tube of inverter bridge, makes it conducting or cut-off, produces continuous torque, motor is realized and controlled and adjust rotating speed.
The other the same as in Example 1.
In sum, school bus stop signpost control setup of the present invention and control method thereof both can be controlled stretching out of stop signpost and be packed up by manual mode, can be controlled stretching out of stop signpost and be packed up by automatic mode again.First, by position signal unit, gate-control signal unit, speed-slackening signal unit, control signal unit and the vehicle speed signal unit being connected with microcontroller is set, can carry out accurately automatically controlling to stop signpost, not only to chaufeur, offer convenience, can also improve the safety of driving.Secondly, microcontroller is by analyzing judgement to the location information of the stop signpost of position signal element collection, when judging stop signpost and reached assigned address, microcontroller just transmits control signal and adds locking torque to controlling motor, make its latched position when stall, stopped to rock gap, thereby stop signpost locking position is not rocked.Again, by adopting bipolarity segmentation Driving Stepping Motor or DC brushless motor, control, bipolarity segmentation Driving Stepping Motor can be realized angle and the speed control of controlling motor in driver signal input end input pulse quantity and frequency, can realize very little stepping angle, realize Accurate Position Control.DC brushless motor has that rotor inertia is little, fast response time, structural reliability are high, good speed adjustment features, feature that work efficiency is high, the control signal that can send microcontroller is rapidly made response, and can control accurately the shift position of stop signpost.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (9)
1. a school bus stop signpost control setup, is characterized in that: comprise microcontroller, the control motor for driving stop signpost to move, control electric-motor drive unit, control signal unit harmony optical signal cell; The mouth of described control signal unit harmony optical signal cell is all connected with the input end of microcontroller, the mouth of described microcontroller is connected with the input end of controlling electric-motor drive unit, the mouth of described control electric-motor drive unit with for driving the input end of the control motor that stop signpost moves to be connected.
2. a kind of school bus stop signpost control setup according to claim 1, it is characterized in that: described microcontroller is connected with position signal unit, gate-control signal unit, speed-slackening signal unit and vehicle speed signal unit, the mouth of described position signal unit, gate-control signal unit, speed-slackening signal unit and vehicle speed signal unit is all connected with the input end of described microcontroller.
3. a kind of school bus stop signpost control setup according to claim 1, is characterized in that: described is stepping motor for driving the control motor of stop signpost motion.
4. a kind of school bus stop signpost control setup according to claim 1, is characterized in that: described is DC brushless motor for driving the control motor of stop signpost motion.
5. a kind of school bus stop signpost control setup according to claim 3, it is characterized in that: described control electric-motor drive unit comprises driving circuit and H drive axle, described driving circuit is for isolation, conversion microcontroller signal and drive the work of H drive axle, described driving circuit is connected with microcontroller, the input end of described H drive axle is connected with driving circuit, and the mouth of described H drive axle is connected with stepping motor.
6. a kind of school bus stop signpost control setup according to claim 4, is characterized in that: described control electric-motor drive unit is power semiconductor commutating circuit.
7. the control method of a kind of school bus stop signpost control setup according to claim 1, is characterized in that: this control method comprises the following steps:
(1) data that microcontroller Real-time Obtaining gate-control signal unit, speed-slackening signal unit, control signal unit and vehicle speed signal unit gather;
(2) microcontroller is to the data analysis judgement of obtaining, and transmits control signal to controlling electric-motor drive unit, controls electric-motor drive unit and drives and control machine operation, controls driven by motor stop signpost and stretches out or be retracted into assigned address;
(3) position signal unit sends to microcontroller by the location information of stop signpost, and microcontroller sends control signals to controls motor harmony optical signal cell, to controlling the state of motor harmony optical signal cell, controls.
8. the control method of a kind of school bus stop signpost control setup according to claim 7, it is characterized in that: the described microcontroller of step (2) judges the data analysis obtaining, and transmit control signal to controlling electric-motor drive unit, control electric-motor drive unit and drive and control machine operation, control that driven by motor stop signpost is stretched out or the detailed process that is retracted into assigned address is:
If microcontroller receives the information of stretching out stop signpost that control signal unit sends, or the opening signal that the speed-slackening signal that the brake pedal of receiving the transmission of speed-slackening signal unit is stepped on and door contact unit send, transmit control signal to controlling electric-motor drive unit, control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and reach assigned address;
If microcontroller receives the information of packing up stop signpost of control signal unit transmission and the closing signal that door contact unit sends, or the speed of a motor vehicle that receives the transmission of vehicle speed signal unit is greater than setting value, transmit control signal to controlling electric-motor drive unit, control electric-motor drive unit and drive control machine operation, control driven by motor stop signpost and be retracted into assigned address.
9. the control method of a kind of school bus stop signpost control setup according to claim 7, it is characterized in that: the described position signal unit of step (3) sends to microcontroller by the location information of stop signpost, microcontroller sends control signals to controls motor harmony optical signal cell, and the detailed process that the state of control motor harmony optical signal cell is controlled is:
If stop signpost is stretched out arrival assigned address, position signal unit sends to microcontroller by the location information of stop signpost, the information that microcontroller sends according to position signal unit, judge stop signpost and reached assigned address, microcontroller transmits control signal to controlling motor harmony optical signal cell, control motor and add locking torque, sound and light signal unit carries out sound and light alarm;
If stop signpost is packed up arrival assigned address, position signal unit sends to microcontroller by the location information of stop signpost, the information that microcontroller sends according to position signal unit, judge stop signpost and be retracted into assigned address, microcontroller transmits control signal to controlling electric-motor drive unit harmony optical signal cell, control electric-motor drive unit and drive control motor to quit work, 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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| US4138668A (en) * | 1977-10-12 | 1979-02-06 | said Joseph E. Latta, Jr. | School bus stop sign |
| US20060124375A1 (en) * | 2004-12-14 | 2006-06-15 | Lahr Jeremy A | Vehicle lift interlock |
| 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 |
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