CN101638087A - Glass electrical heating controller for locomotive - Google Patents
Glass electrical heating controller for locomotive Download PDFInfo
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- CN101638087A CN101638087A CN200910037877A CN200910037877A CN101638087A CN 101638087 A CN101638087 A CN 101638087A CN 200910037877 A CN200910037877 A CN 200910037877A CN 200910037877 A CN200910037877 A CN 200910037877A CN 101638087 A CN101638087 A CN 101638087A
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Abstract
The invention discloses a heating controller for defrosting windshield glass of a locomotive. The heating controller comprises a central processing unit and a stabilized voltage power supply circuit which supplies power to the central processing unit. The heating controller is characterized in that: an input terminal of the central processing unit is also electrically connected with a temperaturesampling circuit and an infrared reflection sampling circuit which measure temperature of heated glass, and an output terminal of the central processing unit is electrically connected with a drive circuit; and the central processing unit receives voltage signals from the temperature sampling circuit and the infrared reflection sampling circuit, control signals are outputted to the drive circuit after the voltage signals are judged by the central processing unit, and the drive circuit amplifies the control signals for output and controls switch-on and switch-off of a relay. The glass electricalheating controller for the locomotive is characterized by high safety performance, low failure rate and intelligent control of glass heating, etc. The glass electrical heating controller for the locomotive has advantages of being capable of manually controlling and selecting the degree of defrosting and then achieving the purpose of energy saving, and good reliability and excellent anti-interference performance.
Description
Technical field
The present invention relates to locomotive front windshield heating defrosting control technology field, relate to a kind of locomotive front windshield defrosting heating controller particularly.
Background technology
The control that defrosts of the temperature switch that the only simple employing of current domestic most locomotive front wind-powered electricity generation heating glass controller is 40 ℃ or the analog temperature control circuit of simple function, there is great limitation in this mode, the variation that can not conform, can't judge the effect of defrosting automatically, on certain degree, cause the waste of the energy.
Summary of the invention
The objective of the invention is to overcome the variation that the locomotive front wind-powered electricity generation heating glass controller mode of prior art can not conform, can't judge the problem of defrosting effect automatically, a kind of good resistance jamming performance that possesses is provided, high reliability, the heating glass nonshared control unit keeps out the wind before the locomotive of less trouble, this locomotive front wind-powered electricity generation heating glass controller has possessed can pass through the function of gear on-off manual regulation defrosting temperature, and judges the effect of defrosting automatically by infrared receiving sensor; Use many temperature sensor sampling to guarantee the particularity of feedback temperature; removed the complete machine potential faults that brings because of single temperature sensor damage; keeping out the wind before locomotive heats has set double protection functions under the highest temperature of heating that the glass GB requires, and this controller is applied to locomotive or the self-propelled vehicle front windshield is a kind of development tendency.
For realizing above purpose, the present invention has taked following technical scheme: a kind of locomotive front windshield defrosting heating controller, include central processing unit, voltage-stabilized power supply circuit for this central processing unit power supply, the input end of described central processing unit also is electrically connected with the thermometric temperature sampling circuit of heating glass, infrared external reflection sample circuit, and this central processing unit mouth is electrically connected with driving circuit; Described central processing unit receives the voltage signal from temperature sampling circuit, the sampling of infrared external reflection sample circuit, output a control signal to driving circuit after central processing unit for processing is judged, this driving circuit amplifies the conducting of back output and control relay with control signal and cuts out.
Also include display interface circuit and display unit, described central processing unit mouth is electrically connected to display unit by display interface circuit.Shown display unit is the interface of man-machine exchange, mainly provides the effect that temperature value shows.
Also include the communication interface circuit, described central processing unit mouth is electrically connected to the communication interface circuit, and by this communication interface circuit and extraneous communication.The CPU microprocessor can also use built-in communication module and vent external bus to carry out communication, thus the control command of sending here on the bus of seeking unity of action;
Described temperature sampling circuit comprises temperature sensor, chemical capacitor, diode, current-limiting resistance, the negative electrode of this chemical capacitor is electrically connected back ground connection with the anode of diode, the anode of chemical capacitor be electrically connected with temperature sensor and current-limiting resistance respectively after the cathodic electricity of diode is connected, the negative electrode of this diode is electrically connected with mouth.
Described temperature sampling circuit is three groups, and described temperature sensor is three.
Described infrared external reflection sample circuit comprises infrared reception aerotron, divider resistance, chemical capacitor and diode, the positive pole of the collecting electrode power connection of infrared reception aerotron, one end, the anode of chemical capacitor and the negative electrode of diode of emitter serial connection divider resistance, the anode of the other end of this divider resistance, the negative electrode of chemical capacitor and diode is electrically connected back ground connection.
Also include driving switch, this driving switch is electrically connected with the input end of described central processing unit.
Described infrared external reflection sample circuit includes the first infrared light emission aerotron and the second infrared light emission aerotron that is installed on the locomotive support, is formed with angle between this first infrared light emission aerotron and the second infrared light emission aerotron.
The present invention compared with prior art has following advantage:
(1) glass electrical heating controller for locomotive of the present invention has the safety performance height of glass heats, and fault rate is low, characteristics such as Based Intelligent Control;
(2) the suitable voltage range of glass electrical heating controller for locomotive of the present invention is wide;
(3) glass electrical heating controller for locomotive of the present invention can manually be controlled the degree of selecting defrosting, reaches energy-conservation purpose;
(4) glass electrical heating controller for locomotive constant temperature defrosting of the present invention is effective;
(5) glass electrical heating controller for locomotive good reliability of the present invention, obstacle overcome ability is superior.
Description of drawings
Fig. 1 is the glass electrical heating controller for locomotive system chart of the embodiment of the invention;
Fig. 2 is the temperature sampling circuit schematic diagram of the glass electrical heating controller for locomotive of the embodiment of the invention;
Fig. 3 is the infrared external reflection sample circuit schematic diagram of the glass electrical heating controller for locomotive of the embodiment of the invention;
Fig. 4 is the structural representation of infrared external reflection sensor of the glass electrical heating controller for locomotive of the embodiment of the invention;
Fig. 5 is the driving circuit schematic diagram of the glass electrical heating controller for locomotive of the embodiment of the invention;
Fig. 6 is the central processing unit and the part peripheral circuit schematic diagram thereof of the glass electrical heating controller for locomotive of the embodiment of the invention;
Fig. 7 is the glass electrical heating controller for locomotive communication interface schematic circuit diagram of the embodiment of the invention;
Fig. 8 is the glass electrical heating controller for locomotive voltage-stabilized power supply circuit scheme drawing of the embodiment of the invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments content of the present invention is described in further details.
Embodiment:
See also shown in Figure 1, a kind of locomotive front windshield defrosting heating controller, include central processing unit, voltage-stabilized power supply circuit for this central processing unit power supply, central processing unit is the core of control system, this central processing unit comprises the P87LPC768 chip, this built-in chip type AD converter, serial communication interface and I
2The C communication interface; The voltage signal that temperature sampling circuit, the output of infrared external reflection sample circuit come, be directly inputted to central processing unit, after central processing unit is handled judgement, control signal is outputed to driving circuit, carrying out electric current by driving circuit amplifies the conducting of back output control relay and closes, thereby the conducting of the electric current of heater strip and closing in the direct control heating glass reaches the purpose of control heating glass temperature, better defrosting; Output on the central processing unit after the system power supply process voltage of voltage regulation step-down filtering, as the energy source of central processing unit work; Gear on-off is input on the pin position of P87LPC768 chip by the height of regulating level, for central processing unit is judged the output defrosting mode, also include display interface circuit and display unit, the central processing unit mouth is electrically connected to display unit by display interface circuit, this display unit, be the interface of man-machine exchange, mainly provide the effect that temperature value shows; The P87LPC768 chip can also use built-in communication module and vent external bus to carry out communication, thus the control command of sending here on the bus of seeking unity of action; And a utmost point of described system power supply connects a utmost point of temperature switch, an other utmost point of temperature switch is connected to relay, Chang Kaiduan of relay connects a connection terminal of glass heats silk, another utmost point of the direct welding system power supply of another one connection terminal of heater strip, they are cascaded separately, by relay and temperature switch the glass heats silk is carried out two-fold insurance control, also include driving switch, this driving switch is electrically connected with the input end of central processing unit, gear on-off can be encoded and is input to central processing unit, carry out warm-up control by the P87LPC768 chip afterwards, make the user to set different defrosting temperature according to ambient conditions.
See also shown in Figure 2, adopt PT100 as temperature sensor, its resistance when temperature traverse changes and linearity height, PT100 connects with current-limiting resistance R1, under the constant situation of total voltage VCC, during the change in resistance of PT100, voltage is also along with variation, the variation of voltage can be imported central processing unit and handle, chemical capacitor C1 in parallel and diode D1 at the PT100 two ends, the negative electrode of this chemical capacitor C1 is electrically connected back ground connection with the anode of diode D1, the anode of chemical capacitor C1 be electrically connected with PT100 and current-limiting resistance R1 respectively after the cathodic electricity of diode D1 is connected, the negative electrode of this diode D1 is electrically connected with output terminals A D. Wherein chemical capacitor C1 plays filtering, and diode D1 plays jamproof effect.Temperature sampling circuit is three groups, and described temperature sensor PT100 is three.
See also shown in Figure 3, the positive pole of power connection on the collecting electrode of infrared reception aerotron Q1, ground connection behind emitter serial connection divider resistance R1, chemical capacitor C1 and the diode D1, divider resistance R1 and chemical capacitor C1 parallel connection, after the parallel connection again with diode D1 parallel connection; When the light intensity of reflection changes from weak to strong, infrared reception aerotron Q1 also follows from weak and is conducting to full conducting, the electric current of conducting also becomes big gradually by little, electric current flows to the negative pole of power supply by divider resistance R1, this make divider resistance R1 voltage raise gradually, this voltage signal is handled by the central processing unit input, and wherein chemical capacitor C1 plays filtering, and diode D1 plays jamproof effect.
As shown in Figure 4, the structural representation of the infrared external reflection sensor of the glass electrical heating controller for locomotive of the embodiment of the invention, it is characterized in that forming by first infrared light-emitting diode 1, second infrared receiver diode 2 and locomotive support 3, first infrared light-emitting diode 1 and second infrared receiver diode 2 are installed on the support 3, and first infrared light-emitting diode 1 and second infrared receiver diode, 2 shapes have a certain degree; During work, the infrared ray that first infrared light-emitting diode 1 sends reflects back on second infrared receiver diode 2 through glass, utilize the mechanism of the resistance of second infrared receiver diode 2, judge the effect of defrosting by the power that detects infrared light in ultrared effect generation resistance variations.
See also shown in Figure 5; comprise relay T1; aerotron Q5; power supply is electrically connected with the collecting electrode of aerotron Q5 by relay T1; the grounded emitter of this aerotron Q5; its base stage is electrically connected with the pin two 0 of chip P87LPC768 by a resistance; relay T1 master cock K1 conducting and closing; system power supply J2 powers to heater strip J3; master cock K1 and S1 are serially connected between the mouth 1 and heater strip J3 input end 2 of system power supply J2, also include the diode D7 that driving circuit is protected, and this diode D7 is electrically connected on the two ends of relay T1; the negative electrode of diode D7 is connected with power supply, and its anode is electrically connected with the collecting electrode of aerotron Q5.
See also shown in Figure 6, central processing unit comprises chip Q3, its model is P87LPC768, the 1st, 2 of display interface circuit J1 and chip Q3,3,4 pins are electrically connected, and also comprise one by capacitor C 5, the crystal oscillator filter circuit that crystal oscillator Y1 constitutes, the 5th of this crystal oscillator filter circuit and chip Q3,6,7 pins connect, and driving switch is made up of to R3 switching valve S1 and pull down resistor R1 among the figure, the 10th to 12 pin of chip Q3 successively with the pin one of switching valve S1,2,3 connect the pin 4,5 of switching valve S1,6 power connections, the 10th to 12 pin of chip Q3 are successively by three pull down resistor ground connection; The 19th pin of chip Q3 connects the emitter of the infrared reception aerotron of infrared reflection sample circuit Q1, the 15th pin is electrically connected with the collecting electrode that meets the infrared reception aerotron of infrared reflection sample circuit Q1, the the 16th to 18 each pin of pin of this chip Q3 connects a temperature sampling circuit respectively, and one of them temperature sampling circuit with the concrete connection mode of chip Q3 is: the pin one 6 of chip Q3 is connected with negative electrode, resistance R 8 and the point of connection of temperature sensor R1 of diode D1 respectively.
See also shown in Figure 7ly, the 13rd pin of chip Q1 is electrically connected with the 3rd pin of communication interface circuit, and the 14th pin of chip Q1 is electrically connected with communication interface circuit the 4th pin
See also shown in Figure 8; this example voltage-stabilized power supply circuit is circuit commonly used; this circuit front-end adopts choke coil filtering; possesses very strong noiseproof feature; in addition also possess functions such as isolating wide voltage input, overcurrent-overvoltage and short-circuit protection fully, its input voltage is respectively AC (110V/220V/380V) and DC (24V/110V).
Above-listed detailed description is at the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (8)
1, a kind of locomotive front windshield defrosting heating controller, include central processing unit, voltage-stabilized power supply circuit for this central processing unit power supply, it is characterized in that: the input end of described central processing unit also is electrically connected with the thermometric temperature sampling circuit of heating glass, infrared external reflection sample circuit, and this central processing unit mouth is electrically connected with driving circuit; Described central processing unit receives the voltage signal from temperature sampling circuit, the sampling of infrared external reflection sample circuit, output a control signal to driving circuit after central processing unit for processing is judged, this driving circuit amplifies the conducting of back output and control relay with control signal and cuts out.
2, locomotive front windshield defrosting heating controller as claimed in claim 1, it is characterized in that: also include display interface circuit and display unit, described central processing unit mouth is electrically connected to display unit by display interface circuit.
3, locomotive front windshield defrosting heating controller as claimed in claim 2, it is characterized in that: also include the communication interface circuit, described central processing unit mouth is electrically connected to the communication interface circuit, and by this communication interface circuit and extraneous communication.
4, locomotive front windshield defrosting heating controller as claimed in claim 3, it is characterized in that: described temperature sampling circuit comprises temperature sensor (PT100), chemical capacitor (C1), diode (D1), current-limiting resistance (R1), the negative electrode of this chemical capacitor (C1) is electrically connected back ground connection with the anode of diode (D1), the anode of chemical capacitor (C1) be electrically connected with temperature sensor (PT100) and current-limiting resistance (R1) respectively after the cathodic electricity of diode (D1) is connected, the negative electrode of this diode (D1) is electrically connected with mouth (AD).
5, locomotive front windshield defrosting heating controller as claimed in claim 4, it is characterized in that: described temperature sampling circuit is three groups, described temperature sensor (PT100) is three.
6, locomotive front windshield defrosting heating controller as claimed in claim 5, it is characterized in that: described infrared external reflection sample circuit comprises infrared reception aerotron (Q1), divider resistance (R1), chemical capacitor (C1) and diode (D1), the positive pole of the collecting electrode power connection of infrared reception aerotron (Q1), one end, the anode of chemical capacitor (C1) and the negative electrode of diode (D1) of emitter serial connection divider resistance (R1), the negative electrode of the other end of this divider resistance (R1), chemical capacitor (C1) and the anode of diode (D1) are electrically connected back ground connection.
7, locomotive front windshield defrosting heating controller as claimed in claim 6, it is characterized in that: also include driving switch, this driving switch is electrically connected with the input end of described central processing unit.
8, locomotive front windshield defrosting heating controller as claimed in claim 7, it is characterized in that: described infrared external reflection sample circuit includes the first infrared light emission aerotron (1) and the second infrared light emission aerotron (2) that is installed on the locomotive support (3), is formed with angle between this first infrared light emission aerotron (1) and the second infrared light emission aerotron (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100378777A CN101638087B (en) | 2009-03-13 | 2009-03-13 | Glass electrical heating controller for locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100378777A CN101638087B (en) | 2009-03-13 | 2009-03-13 | Glass electrical heating controller for locomotive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101638087A true CN101638087A (en) | 2010-02-03 |
| CN101638087B CN101638087B (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100378777A Expired - Fee Related CN101638087B (en) | 2009-03-13 | 2009-03-13 | Glass electrical heating controller for locomotive |
Country Status (1)
| Country | Link |
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| CN (1) | CN101638087B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167013A (en) * | 2011-04-01 | 2011-08-31 | 大连民族学院 | Device for clearing away snow on license plate |
| CN103267357A (en) * | 2013-06-04 | 2013-08-28 | 苏州市金翔钛设备有限公司 | Constant-temperature heater |
| CN104238621A (en) * | 2014-09-12 | 2014-12-24 | 广州文冲船厂有限责任公司 | Constant power control method and control system for heating glass of cab |
| CN106364423A (en) * | 2016-10-20 | 2017-02-01 | 广西大学 | Locomotive electric heating glass protective earthing device |
| CN112730178A (en) * | 2020-12-22 | 2021-04-30 | 杭州春来科技有限公司 | Vehicle-mounted transmission-type smoke meter and vehicle |
| CN112822805A (en) * | 2019-11-15 | 2021-05-18 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
| CN113406415A (en) * | 2021-06-07 | 2021-09-17 | 广州小鹏自动驾驶科技有限公司 | Detection method and device for defrosting and demisting device of vehicle-mounted camera |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0407633A1 (en) * | 1989-07-11 | 1991-01-16 | Nissan Motor Co., Ltd. | Heater controlling apparatus for car window |
| JP2005233728A (en) * | 2004-02-18 | 2005-09-02 | Denso Corp | Photosensor device |
| CN2690238Y (en) * | 2004-03-31 | 2005-04-06 | 周伟 | Fog and frog removing device for automobile wind screen |
| CN201114841Y (en) * | 2007-07-06 | 2008-09-10 | 长春诺亚汽车电子有限公司 | Defrosting heating slice for car rear mirror |
-
2009
- 2009-03-13 CN CN2009100378777A patent/CN101638087B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167013A (en) * | 2011-04-01 | 2011-08-31 | 大连民族学院 | Device for clearing away snow on license plate |
| CN103267357A (en) * | 2013-06-04 | 2013-08-28 | 苏州市金翔钛设备有限公司 | Constant-temperature heater |
| CN104238621A (en) * | 2014-09-12 | 2014-12-24 | 广州文冲船厂有限责任公司 | Constant power control method and control system for heating glass of cab |
| CN104238621B (en) * | 2014-09-12 | 2015-10-28 | 广州文冲船厂有限责任公司 | A kind of pilothouse heating glass constant dc power control method and control system thereof |
| CN106364423A (en) * | 2016-10-20 | 2017-02-01 | 广西大学 | Locomotive electric heating glass protective earthing device |
| CN112822805A (en) * | 2019-11-15 | 2021-05-18 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
| WO2021093077A1 (en) * | 2019-11-15 | 2021-05-20 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
| CN112822805B (en) * | 2019-11-15 | 2022-05-17 | 中车唐山机车车辆有限公司 | Windshield glass electric heating control circuit, control method and system |
| CN112730178A (en) * | 2020-12-22 | 2021-04-30 | 杭州春来科技有限公司 | Vehicle-mounted transmission-type smoke meter and vehicle |
| CN113406415A (en) * | 2021-06-07 | 2021-09-17 | 广州小鹏自动驾驶科技有限公司 | Detection method and device for defrosting and demisting device of vehicle-mounted camera |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101638087B (en) | 2011-09-21 |
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Granted publication date: 20110921 Termination date: 20160313 |