CN204360234U - A kind of control system of electric heater - Google Patents
A kind of control system of electric heater Download PDFInfo
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- CN204360234U CN204360234U CN201420795403.5U CN201420795403U CN204360234U CN 204360234 U CN204360234 U CN 204360234U CN 201420795403 U CN201420795403 U CN 201420795403U CN 204360234 U CN204360234 U CN 204360234U
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Abstract
A kind of control system of electric heater, it is characterized in that, comprise the relay assembly, detection of electrical leakage module and the power module that are electrically connected with city, described relay module is connected with electric heater, described electric heater is placed in water tank inside, described water tank inside is also provided with temperature sensor, and described temperature sensor is connected with main control module by temperature measurement module, and described control module also connects relay assembly, power module, detection of electrical leakage module, display module, alarm module and operation interface; Described power module, relay assembly, temperature measurement module, operation interface, display module, detection of electrical leakage module, alarm module and control module are integrated on one piece of wiring board.Which eliminate the loose contact because grafting point causes, machine failure more, improve the reliability of circuit board performance.
Description
Technical field
The utility model belongs to home wiring control field, especially belongs to a kind of control system of electric heater.
Background technology
Electric heater utilizes the water heater carrying out using electricity as the energy heating.Along with the requirement of people to quality of life is more and more higher, the function of the control system of electric heater also from strength to strength.But existing control system is many is made up of two parts: forceful electric power plate and control panel.The two cooperatively interacts and could realize by practical function.Forceful electric power plate is connected with winding displacement with needing interface between control panel, and constantly perfect along with function, the number of pins of the driving chip of forceful electric power plate and control panel constantly increases, which results in whole control system circuit loaded down with trivial details, be easy to occur the misconnection of patch pin or misconnection, and the annexation between each pin of the driving chip generally used now must keep matched, once misconnection or misconnection probably cause whole chip to be subject to expendable destruction, the dysfunction of whole water heater control system is caused even to be scrapped, thus add the potential safety hazard of water heater use, cause security incident.
Meanwhile, the plank practical function that control system relies on winding displacement to connect by two, all functional realiey are all winding displacement loads, and this causes the load pressure of winding displacement comparatively large, and winding displacement is easy to damage, and winding displacement is once damage control system by cisco unity malfunction.
Further, because grafting point is many, plugging position loose contact can be caused like this to loosen, cause circuit board blank screen, power-off, line fault, anti-interference difference and connector oxidation etc., complete machine can not normally be used, and Customer Complaint, product quality can not be guaranteed.
Finally, the processing cost of forceful electric power plate and control panel is higher, and installation process is complicated.
Utility model content
In order to solve the problem, the utility model discloses a kind of control system of electric water heater, which eliminates the loose contact because grafting point causes, machine failure more, improves the reliability of circuit board performance.
To achieve these goals, the technical scheme that adopts of the utility model is as follows:
A kind of control system of electric heater, comprise the relay assembly, detection of electrical leakage module and the power module that are electrically connected with city, described relay module is connected with electric heater, described electric heater is placed in water tank inside, described water tank inside is also provided with temperature sensor, described temperature sensor is connected with main control module by temperature measurement module, and described control module also connects relay assembly, power module, detection of electrical leakage module, display module, alarm module and operation interface; Described power module, relay assembly, temperature measurement module, operation interface, display module, detection of electrical leakage module, alarm module and control module are integrated on one piece of wiring board.
The main control chip of described control module is STM8S105K4T6C, and the 1st pin of described STM8S105K4T6C is by electric capacity C10 ground connection; The 4th pin ground connection of described STM8S105K4T6C; 5th pin of described STM8S105K4T6C is by electric capacity C6 ground connection; 6th pin of described STM8S105K4T6C connects power module outlet voltage source; 6th pin of described STM8S105K4T6C is by electric capacity C7 ground connection, and described electric capacity C7 is connected in parallel polar capacitor C21, and the positive pole of described polar capacitor C21 connects power module outlet voltage source; 7th pin of described STM8S105K4T6C connects power module outlet voltage source; 7th pin of described STM8S105K4T6C is by electric capacity C8 ground connection; 9th pin of described STM8S105K4T6C connects power module outlet voltage source, and the 9th pin of described STM8S105K4T6C is by electric capacity C9 ground connection; The 10th pin ground connection of STM8S105K4T6C.
Described power module comprises: the 1st pin of fence type Large space double stitch connection terminal CN, described CN is successively by fuse F1, fuse F2 connection transformer T input end of series connection, node between described fuse F1 and fuse F2 is AC_L, and described CN the 2nd pin is node AC_N, is connected with voltage dependent resistor (VDR) RV1 between described node AC_L and node AC_N, described voltage dependent resistor (VDR) RV1 is connected in parallel electric capacity C5, another input end connected node AC_N of described transformer T, stabilivolt TVS1 is connected with between two output terminals of described transformer T, the two ends of described stabilivolt TVS1 connect the input end of rectifier, polar capacitor C1 is connected with between the output terminal of described rectifier, described polar capacitor C1 is connected in parallel electric capacity C3, the positive pole of the output terminal of described rectifier connects the positive pole of polar capacitor C1, the minus earth of the output terminal of described rectifier, the positive pole of the output terminal of described rectifier connects the Vin end of stabilivolt 7805, the GND of described stabilivolt 7805 holds ground connection, the Vout end of described stabilivolt 7805 and the indirect electric capacity C4 on ground, the Vout end of described stabilivolt 7805 is the output terminal of power module, described transformer T is B-class insulation grade transformer.
Described relay assembly comprises: triode Q3, and the base stage of described triode Q3 connects the 24th pin of STM8S105K4T6C by resistance R12, the base stage of described triode Q3 and the indirect resistance R11 of emitter, described triode Q3 grounded emitter; The coil negative pole of the collector connection relay K1 of described triode Q3, the coil electrode of described relay K 1 connects the positive pole of rectifier output end, Opposite direction connection diode D1 between the coil electrode of described relay K 1 and negative pole; The switch movable contact point of described relay K 1 meets node AC_L, the switch stationary contact point a of described relay K 1 connects the 5th pin of fence type Large space double stitch connection terminal CN, the collector of described triode Q3 connects the base stage of triode Q1 by resistance R3, the grounded emitter of triode Q1, the coil negative pole of the collector connecting relay K2 of triode Q1, the coil electrode of described relay K 2 connects the positive pole of rectifier output end, Opposite direction connection diode D2 between the coil electrode of described relay K 2 and negative pole; The switch movable contact point of described relay K 1 meets node AC_N, and the switch stationary contact point b of described relay K 2 connects the 4th pin of fence type Large space double stitch connection terminal CN.
Described temperature measurement module comprises: node 1, node 1 is connected by the 11st pin of resistance R8 and STM8S105K4T6C, described node 1 is by electric capacity C18 ground connection, described electric capacity C18 is connected in parallel electric capacity C12, Opposite direction connection diode D11 between described node 1 and ground, described node 1 connects power module outlet by resistance R6, and described node 1 is connected diode D10 with forward between power module outlet, and described node 1 connects the 8th pin of fence type Large space double stitch connection terminal CN.
Described detection of electrical leakage module comprises: current detection circuit and CT coil, described CT coil one end ground connection, the described CT coil other end connects the base stage of triode Q4 by resistance R9, the collector of described triode Q4 connects the 22nd pin of STM8S105K4T6C, the grounded emitter of described triode Q4, the base stage of described triode Q4 be connected electric capacity C2 between emitter, Opposite direction connection diode D9 between the base stage of described triode Q4 and emitter.
Described display module comprises: driving chip 74HC164 and LED shows, 1st pin of described driving chip 74HC164 is by electric capacity C17 ground connection, 1st pin of described driving chip 74HC164 connects the 14th pin of STM8S105K4T6C by resistance R26, 2nd pin of described driving chip 74HC164 connects power module outlet, 3rd pin of described driving chip 74HC164 connects the 1st pin of LED display, 4th pin of described driving chip 74HC164 connects the 2nd pin of LED display, 5th pin of described driving chip 74HC164 connects the 4th pin of LED display, 6th pin of described driving chip 74HC164 connects the 11st pin of LED display, the 7th pin ground connection of driving chip 74HC164, 8th pin of described driving chip 74HC164 is by electric capacity C19 ground connection, 8th pin of described driving chip 74HC164 connects the 15th pin of STM8S105K4T6C by resistance R27, 9th pin of described driving chip 74HC164 connects the 16th pin of STM8S105K4T6C, 10th pin of described driving chip 74HC164 connects the 13rd pin of LED display by resistance R17, 11st pin of described driving chip 74HC164 connects the 12nd pin of LED display by resistance R15, 12nd pin of described driving chip 74HC164 connects the 5th pin of LED display by resistance R14, 13rd pin of described driving chip 74HC164 connects the 3rd pin of LED display by resistance R13, described driving chip 74HC164 the 14th pin connects power module outlet, 14th pin of described driving chip 74HC164 is by electric capacity C16 ground connection, electric capacity C16 is connected in parallel polar capacitor C23, the positive pole of polar capacitor C23 connects the 14th pin of driving chip 74HC164, 10th pin of described LED display connects the 18th pin of tm8s105k4t6c, 14th pin of described LED display connects power module outlet by resistance R25, 15th pin ground connection of described LED display.
The beneficial effects of the utility model are:
1, by all functions module integration on a wiring board, eliminate the loose contact because grafting point causes, machine failure more, improve the reliability of circuit board performance;
2, the utility model adopts STM8S105K4T6C chip, this Series of MCU integrates the high speed of kernel of new generation, handling property and code efficiency, and multi-usage Peripheral Interface, and possessing multinomial specific function, chip has higher strong a piece of wood serving as a brake to halt a carriage degree and reliability.Embedded storer (comprising true EEPROM) can simplify application simulation.Have low system cost, the application and development cycle is short, handling property advantages of higher.
3, the built-in four kinds of energy saver modes of STM8S family chip can realization response power management policy fast.The supply voltage scope of 3.0V to 5.5V can also simplify performance history, is convenient to both design upgrading.
4, material cost and the manufacturing cost of controller is decreased;
5, the utility model power transformer adopts B-class insulation grade transformer, and insulation heat resisting temperature is 130 DEG C, fully takes into account overtemperatute when transformer works in long-time little space, to guarantee controller long-time normal table work continuously;
6, simplify the operation in water heater production run and technological requirement, save artificial, reduce production cost;
7, the requirement of water heater to installing space is reduced;
8, simplify the judgement to water tank fault fault, be also convenient to the maintenance of dismounting after sale, convenient and swift, improve maintenance efficiency, thus guarantee service quality;
9, integrated buying is convenient to, and the marrying again of after cost.
Accompanying drawing explanation
Fig. 1 structured flowchart of the present utility model;
Fig. 2 STM8S105K4T6C minimum system figure;
Fig. 3 power module circuitry figure;
Fig. 4 relay unit circuit structural drawing;
Fig. 5 temperature measurement module circuit diagram;
Fig. 6 detection of electrical leakage module circuit diagram;
Fig. 7 current detection circuit figure;
Fig. 8 display module circuit diagram;
Fig. 9 operation interface circuit diagram;
Figure 10 master chip debugging interface;
Figure 11 alarm module circuitry figure.
Wherein, 1 water tank; 2 electric heaters; 3 temperature sensors; 4 relay assemblies; 5 civil powers; 6 power modules; 7 control modules; 8 detection of electrical leakage modules; 9 operation interfaces; 10 temperature measurement modules; 11 display modules; 12 alarm modules.
Embodiment
As shown in Figure 1, a kind of control system of electric heater, comprising: the electric heater 2 and the temperature sensor 3 that are placed in water tank 1 inside; Temperature sensor 3 connects temperature measurement module 10; Electric heater 2 connects relay assembly 4; Relay assembly 4 is connected with civil power 5; Civil power 5 is connected with power module 6; Civil power 5 is connected with undetected detection module 8; Control module 7 connects power module 6, relay assembly 4, temperature measurement module 10, display module 11, detection of electrical leakage module 8, alarm module 12 and operation interface 9.Wherein, power module 5, relay assembly 4, temperature measurement module 10, operation interface 9, display module 11, detection of electrical leakage module 8, alarm module 12 and control module 7 are integrated on one piece of wiring board.
By all functions module integration on a wiring board, eliminate the loose contact because grafting point causes, machine failure more, improve the reliability of circuit board performance.
Power module is that whole system is powered, and relay group controls electric heater, and temperature sensor is for responding to water temperature and by temperature measurement module taking temperature, temperature information is passed to control module by temperature measurement module simultaneously.
Display module is used for the state of display water heater.
As shown in Figure 2, the main control chip of control module is that the 1st pin of STM8S105K4T6C, STM8S105K4T6C is by electric capacity C10 ground connection; The 4th pin ground connection of STM8S105K4T6C; 5th pin of STM8S105K4T6C is by electric capacity C6 ground connection; 6th pin of STM8S105K4T6C connects power module outlet voltage source; 6th pin of STM8S105K4T6C is by electric capacity C7 ground connection, and electric capacity C7 is connected in parallel polar capacitor C21, and the positive pole of polar capacitor C21 connects power module outlet voltage source; 7th pin of STM8S105K4T6C connects power module outlet voltage source; 7th pin of STM8S105K4T6C is by electric capacity C8 ground connection; 9th pin of STM8S105K4T6C connects power module outlet voltage source, and the 9th pin of STM8S105K4T6C is by electric capacity C9 ground connection; The 10th pin ground connection of STM8S105K4T6C.
Control module controls the functional realiey of whole system, provides alerting signal and interrupts relay group, realize auto-breaking when water temperature reaches settings.
As shown in Figure 3, power module comprises: the 1st pin of fence type Large space double stitch connection terminal CN, CN is successively by fuse F1, fuse F2 connection transformer T input end of series connection, node between fuse F1 and fuse F2 be AC_L, CN the 2nd pin be node AC_N, be connected with voltage dependent resistor (VDR) RV1 between node AC_L and node AC_N, voltage dependent resistor (VDR) RV1 is connected in parallel electric capacity C5, another input end connected node AC_N of transformer T, stabilivolt TVS1 is connected with between two output terminals of transformer, the two ends of stabilivolt TVS1 connect the input end of rectifier, polar capacitor C1 is connected with between the output terminal of rectifier, polar capacitor C1 is connected in parallel electric capacity C3, the positive pole of the output terminal of rectifier connects the positive pole of polar capacitor C1, the minus earth of the output terminal of rectifier, the positive pole of the output terminal of rectifier connects the Vin end of stabilivolt 7805, the GND of stabilivolt 7805 holds ground connection, the Vout end of stabilivolt 7805 and the indirect electric capacity C4 on ground, the Vout end of stabilivolt 7805 is the output terminal of power module.
Transformer is B-class insulation grade transformer.Insulation heat resisting temperature is 130 DEG C, fully takes into account overtemperatute when transformer works in long-time little space, to guarantee controller long-time normal table work continuously
The effect of power module civil power is converted to direct current by rectifier obtain stable low-voltage through stabilivolt again, thus ensure the normal work of whole system.The utility model all VCC_5V mark be power module output terminal mark, what VCC_12V represented is this end points output voltage is 12V.
As shown in Figure 4, relay assembly comprises: triode Q3, and the base stage of triode Q3 connects the 24th pin of STM8S105K4T6C by resistance R12, the base stage of triode Q3 and the indirect resistance R11 of emitter, triode Q3 grounded emitter; The coil negative pole of the collector connection relay K1 of triode Q3, the coil electrode of relay K 1 connects the positive pole of rectifier output end, Opposite direction connection diode D1 between the coil electrode of relay K 1 and negative pole; The switch movable contact point of relay K 1 meets node AC_L, the switch stationary contact point a of relay K 1 connects the 5th pin of fence type Large space double stitch connection terminal CN, the collector of triode Q3 connects the base stage of triode Q1 by resistance R3, the grounded emitter of triode Q1, the coil negative pole of the collector connecting relay K2 of triode Q1, the coil electrode of relay K 2 connects the positive pole of rectifier output end, Opposite direction connection diode D2 between the coil electrode of relay K 2 and negative pole; The switch movable contact point of relay K 1 meets node AC_N, and the switch stationary contact point b of relay K 2 connects the 4th pin of fence type Large space double stitch connection terminal CN.The effect of relay assembly module realizes electric heating function to control.
As shown in Figure 5, temperature measurement module comprises: node 1, node 1 is connected by the 11st pin of resistance R8 and STM8S105K4T6C, node 1 is by electric capacity C18 ground connection, electric capacity C18 is connected in parallel electric capacity C12, Opposite direction connection diode D11 between node 1 and ground, and node 1 connects power module outlet by resistance R6, node 1 is connected diode D10 with forward between power module outlet, and node 1 connects the 8th pin of fence type Large space double stitch connection terminal CN.
As shown in Figure 6, detection of electrical leakage module comprises: current detection circuit and CT coil, CT coil one end ground connection, the CT coil other end connects the base stage of triode Q4 by resistance R9, the collector of triode Q4 connects the 22nd pin of STM8S105K4T6C, the grounded emitter of triode Q4, the base stage of triode Q4 be connected electric capacity C2 between emitter, Opposite direction connection diode D9 between the base stage of triode Q4 and emitter.
Current detection circuit as shown in Figure 7 comprises: the 27th pin of tm8s105k4t6c is connected with the output terminal of power module with resistance R16 by the polar capacitor C22 connected successively; this circuit is signal acquisition circuit; this signal passes from CT coil, is used for judging earth leakage protection circuit whether fault.
As shown in Figure 8, display module comprises: driving chip 74HC164 and LED shows, 1st pin of driving chip 74HC164 is by electric capacity C17 ground connection, 1st pin of driving chip 74HC164 connects the 14th pin of STM8S105K4T6C by resistance R26, 2nd pin of driving chip 74HC164 connects power module outlet, 3rd pin of driving chip 74HC164 connects the 1st pin of LED display, 4th pin of driving chip 74HC164 connects the 2nd pin of LED display, 5th pin of driving chip 74HC164 connects the 4th pin of LED display, 6th pin of driving chip 74HC164 connects the 11st pin of LED display, the 7th pin ground connection of driving chip 74HC164, 8th pin of driving chip 74HC164 is by electric capacity C19 ground connection, 8th pin of driving chip 74HC164 connects the 15th pin of STM8S105K4T6C by resistance R27, 9th pin of driving chip 74HC164 connects the 16th pin of STM8S105K4T6C, 10th pin of driving chip 74HC164 connects the 13rd pin of LED display by resistance R17, 11st pin of driving chip 74HC164 connects the 12nd pin of LED display by resistance R15, 12nd pin of driving chip 74HC164 connects the 5th pin of LED display by resistance R14, 13rd pin of driving chip 74HC164 connects the 3rd pin of LED display by resistance R13, driving chip 74HC164 the 14th pin connects power module outlet, 14th pin of driving chip 74HC164 is by electric capacity C16 ground connection, electric capacity C16 is connected in parallel polar capacitor C23, the positive pole of polar capacitor C23 connects the 14th pin of driving chip 74HC164, 10th pin of LED display connects the 18th pin of tm8s105k4t6c, 14th pin of LED display connects power module outlet by resistance R25, 15th pin ground connection of LED display.
As shown in Figure 9, operation interface circuit diagram comprises three switch S be connected in parallel 1, S2 and S3.Switch S 1 connects the 31st pin of tm8s105k4t6c, and switch S 2 connects the 30th pin of tm8s105k4t6c, and switch S 3 connects the 21st pin of tm8s105k4t6c.
As shown in Figure 10, master chip debugging interface is four pin contact pin CN1.The 4th pin ground connection of four pin contact pin CN1, the 3rd pin of four pin contact pin CN1 connects the 1st pin of tm8s105k4t6c, and the 2nd pin of four pin contact pin CN1 connects the 26th pin of tm8s105k4t6c.
As shown in figure 11, warning device circuit diagram structure, the collector of triode Q5 connects hummer negative pole, and hummer positive pole connects power switch output terminal, the grounded emitter of triode Q5, the base stage of triode Q5 connects the 20th pin of tm8s105k4t6c by resistance R9.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. the control system of an electric heater, it is characterized in that, comprise the relay assembly, detection of electrical leakage module and the power module that are electrically connected with city, described relay module is connected with electric heater, described electric heater is placed in water tank inside, described water tank inside is also provided with temperature sensor, and described temperature sensor is connected with main control module by temperature measurement module, and described control module also connects relay assembly, power module, detection of electrical leakage module, display module, alarm module and operation interface; Described power module, relay assembly, temperature measurement module, operation interface, display module, detection of electrical leakage module, alarm module and control module are integrated on one piece of wiring board.
2. the control system of a kind of electric heater as claimed in claim 1, is characterized in that, the main control chip of described control module is STM8S105K4T6C, and the 1st pin of described STM8S105K4T6C is by electric capacity C10 ground connection; The 4th pin ground connection of described STM8S105K4T6C; 5th pin of described STM8S105K4T6C is by electric capacity C6 ground connection; 6th pin of described STM8S105K4T6C connects power module outlet voltage source; 6th pin of described STM8S105K4T6C is by electric capacity C7 ground connection, and described electric capacity C7 is connected in parallel polar capacitor C21, and the positive pole of described polar capacitor C21 connects power module outlet voltage source; 7th pin of described STM8S105K4T6C connects power module outlet voltage source; 7th pin of described STM8S105K4T6C is by electric capacity C8 ground connection; 9th pin of described STM8S105K4T6C connects power module outlet voltage source, and the 9th pin of described STM8S105K4T6C is by electric capacity C9 ground connection; The 10th pin ground connection of STM8S105K4T6C.
3. the control system of a kind of electric heater as claimed in claim 2, it is characterized in that, described power module comprises: the 1st pin of fence type Large space double stitch connection terminal CN, described CN is successively by fuse F1, fuse F2 connection transformer T input end of series connection, node between described fuse F1 and fuse F2 is AC_L, and described CN the 2nd pin is node AC_N, is connected with voltage dependent resistor (VDR) RV1 between described node AC_L and node AC_N, described voltage dependent resistor (VDR) RV1 is connected in parallel electric capacity C5, another input end connected node AC_N of described transformer T, stabilivolt TVS1 is connected with between two output terminals of described transformer T, the two ends of described stabilivolt TVS1 connect the input end of rectifier, polar capacitor C1 is connected with between the output terminal of described rectifier, described polar capacitor C1 is connected in parallel electric capacity C3, the positive pole of the output terminal of described rectifier connects the positive pole of polar capacitor C1, the minus earth of the output terminal of described rectifier, the positive pole of the output terminal of described rectifier connects the Vin end of stabilivolt 7805, the GND of described stabilivolt 7805 holds ground connection, the Vout end of described stabilivolt 7805 and the indirect electric capacity C4 on ground, the Vout end of described stabilivolt 7805 is the output terminal of power module, described transformer T is B-class insulation grade transformer.
4. the control system of a kind of electric heater as claimed in claim 3, it is characterized in that, described relay assembly comprises: triode Q3, the base stage of described triode Q3 connects the 24th pin of STM8S105K4T6C by resistance R12, the base stage of described triode Q3 and the indirect resistance R11 of emitter, described triode Q3 grounded emitter; The coil negative pole of the collector connection relay K1 of described triode Q3, the coil electrode of described relay K 1 connects the positive pole of rectifier output end, Opposite direction connection diode D1 between the coil electrode of described relay K 1 and negative pole; The switch movable contact point of described relay K 1 meets node AC_L, the switch stationary contact point a of described relay K 1 connects the 5th pin of fence type Large space double stitch connection terminal CN, the collector of described triode Q3 connects the base stage of triode Q1 by resistance R3, the grounded emitter of triode Q1, the coil negative pole of the collector connecting relay K2 of triode Q1, the coil electrode of described relay K 2 connects the positive pole of rectifier output end, Opposite direction connection diode D2 between the coil electrode of described relay K 2 and negative pole; The switch movable contact point of described relay K 1 meets node AC_N, and the switch stationary contact point b of described relay K 2 connects the 4th pin of fence type Large space double stitch connection terminal CN.
5. the control system of a kind of electric heater as claimed in claim 3, it is characterized in that, described temperature measurement module comprises: node 1, node 1 is connected by the 11st pin of resistance R8 and STM8S105K4T6C, described node 1 is by electric capacity C18 ground connection, described electric capacity C18 is connected in parallel electric capacity C12, Opposite direction connection diode D11 between described node 1 and ground, described node 1 connects power module outlet by resistance R6, described node 1 is connected diode D10 with forward between power module outlet, described node 1 connects the 8th pin of fence type Large space double stitch connection terminal CN.
6. the control system of a kind of electric heater as claimed in claim 2 or claim 3, it is characterized in that, described detection of electrical leakage module comprises: current detection circuit and CT coil, described CT coil one end ground connection, the described CT coil other end connects the base stage of triode Q4 by resistance R9, the collector of described triode Q4 connects the 22nd pin of STM8S105K4T6C, the grounded emitter of described triode Q4, the base stage of described triode Q4 be connected electric capacity C2 between emitter, Opposite direction connection diode D9 between the base stage of described triode Q4 and emitter.
7. the control system of a kind of electric heater as claimed in claim 2 or claim 3, it is characterized in that, described display module comprises: driving chip 74HC164 and LED shows, 1st pin of described driving chip 74HC164 is by electric capacity C17 ground connection, 1st pin of described driving chip 74HC164 connects the 14th pin of STM8S105K4T6C by resistance R26, 2nd pin of described driving chip 74HC164 connects power module outlet, 3rd pin of described driving chip 74HC164 connects the 1st pin of LED display, 4th pin of described driving chip 74HC164 connects the 2nd pin of LED display, 5th pin of described driving chip 74HC164 connects the 4th pin of LED display, 6th pin of described driving chip 74HC164 connects the 11st pin of LED display, the 7th pin ground connection of driving chip 74HC164, 8th pin of described driving chip 74HC164 is by electric capacity C19 ground connection, 8th pin of described driving chip 74HC164 connects the 15th pin of STM8S105K4T6C by resistance R27, 9th pin of described driving chip 74HC164 connects the 16th pin of STM8S105K4T6C, 10th pin of described driving chip 74HC164 connects the 13rd pin of LED display by resistance R17, 11st pin of described driving chip 74HC164 connects the 12nd pin of LED display by resistance R15, 12nd pin of described driving chip 74HC164 connects the 5th pin of LED display by resistance R14, 13rd pin of described driving chip 74HC164 connects the 3rd pin of LED display by resistance R13, described driving chip 74HC164 the 14th pin connects power module outlet, 14th pin of described driving chip 74HC164 is by electric capacity C16 ground connection, electric capacity C16 is connected in parallel polar capacitor C23, the positive pole of polar capacitor C23 connects the 14th pin of driving chip 74HC164, 10th pin of described LED display connects the 18th pin of tm8s105k4t6c, 14th pin of described LED display connects power module outlet by resistance R25, 15th pin ground connection of described LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795403.5U CN204360234U (en) | 2014-12-15 | 2014-12-15 | A kind of control system of electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420795403.5U CN204360234U (en) | 2014-12-15 | 2014-12-15 | A kind of control system of electric heater |
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| Publication Number | Publication Date |
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| CN204360234U true CN204360234U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420795403.5U Expired - Fee Related CN204360234U (en) | 2014-12-15 | 2014-12-15 | A kind of control system of electric heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233919A (en) * | 2020-10-30 | 2021-01-15 | 西北工业大学 | Physical power switch of underwater vehicle based on magnetic latching relay |
-
2014
- 2014-12-15 CN CN201420795403.5U patent/CN204360234U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112233919A (en) * | 2020-10-30 | 2021-01-15 | 西北工业大学 | Physical power switch of underwater vehicle based on magnetic latching relay |
| CN112233919B (en) * | 2020-10-30 | 2023-09-19 | 西北工业大学 | Physical power switch of underwater vehicle based on magnetic latching relay |
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