CN2078940U - Power-economizing general protector using integrated circuit - Google Patents
Power-economizing general protector using integrated circuit Download PDFInfo
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- CN2078940U CN2078940U CN 90217280 CN90217280U CN2078940U CN 2078940 U CN2078940 U CN 2078940U CN 90217280 CN90217280 CN 90217280 CN 90217280 U CN90217280 U CN 90217280U CN 2078940 U CN2078940 U CN 2078940U
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- circuit
- integrated circuit
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- electricity
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Abstract
The utility model discloses a power-economizing general protector for the safe power use of a completely integrated circuit, which is composed of a local power source, a signal receiving unit, a master control unit and a sensitivity detecting mechanism. The detected signal voltage is processed by a voltage comparison method, and integrated circuits are used as a switch driver and a propelling relay (or an automatic switch), so that various protective functions of overvoltage, voltage shortage, electric shock (leakage), power supply limitation, overload, short circuit, power-off and preventing lightning stroke can be realized. The utility model which adopts two integrated circuits has the advantages of simple structure, complete function, sensitive response and high safety. The utility model can be matched with a watt-hour meter to form a standard switchboard or a mobile multipurpose combined switchboard, and can be widely used for the safe power use and power-economizing protection in households, factories and schools.
Description
The utility model belongs to the comprehensive protector of household safe electricity consumption, economize on electricity.
Along with popularizing of household electrical appliance, the increase of civilian electric energy consumption, the distribution of electric weight is used also increasingly important, and particularly present high floor building does not all have good ground protection reliably, and safety utilization of electric power exists bigger threat; China's energy shortage in addition, the situation of power tense also are difficult in short-term be alleviated; Overload certainly will cause voltage fluctuation excessive, has influence on the normal operation of circuit, and the power supply short circuit fault also happens occasionally.For guaranteeing household safe electricity consumption and planned distributing electric power, be necessary attached safety utilization of electric power economize on electricity comprehensive protector in the current supply circuit of residential electricity consumption.
At present, the most of function singlenesses of safety guard that market occurs, circuit is simple and crude, stability, poor reliability is difficult to realize the requirement of multifunctional comprehensive protections such as household safe electricity consumption and electricity consumption planning management.The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and provides a kind of safe, reliable, multiple functional, sensitive novel completely inegrated circuit safety utilization of electric power economize on electricity comprehensive protector.
The purpose of this utility model adopts following technical scheme to finish.
Integrated circuit safety utilization of electric power economize on electricity comprehensive protection device and ammeter are installed in the major loop that is connected in parallel on family's power supply on the distribution board together; utilize automatic switch to realize its super, under-voltage outage, touch kinds of protect functions such as (leakage) electricity security personnel, the power supply of limiting the quantity of, overload short-circuit protection.
Its element circuit comprises the localpower circuit, signal receiving unit, main control unit three parts and sensitivity testing agency.
One, localpower adopts resistance-capacitance depressurization, rectification, filtering, voltage stabilizing to supply with.
Two, signal receiving unit mainly by the sampling testing circuit (comprise overvoltage, under-voltage, touch (electric leakage), overcurrent, short-circuit signal and detect) and the voltage comparator circuit formation that links with it.
Cross, a termination civil power phase line of undervoltage detection circuit, the negative terminal of another termination localpower, be composed in series by drag flow diode, dropping resistor and two sample resistances, civil power is through the halfwave rectifier step-down, on two sample resistances, obtain superpressure, under-voltage voltage signal respectively, compare with reference voltage, with the operating state of control entire circuit.
Under the normal condition, the comparison circuit no-output.When line voltage is higher or lower than normal value, cross, under-voltage signal deteching circuit will pickoff signals voltage.
Electric leakage sampled signal voltage is by zero-sequence transformer B
1Pick up, it is by L
1, L
2, L
3Form with iron core.
Under the normal condition, flow through coil L
1, L
2Size of current equate that phase place is opposite, L
3Can not produce induced potential,, flow through L in case life electric shock or electrical appliance electric leakage take place
1, L
2The size of current difference, magnetic field can not be offset fully.So at L
3In will produce induced voltage.
Limit the quantity of the power supply overload signal by common instrument transformer B
2Pick up, it is by L
4, L
5Form with iron core.
As long as L
4In have electric current to flow through, L
5Will produce induced voltage, L
5The big or small same L of induced voltage
4In flow through electric current size be directly proportional, therefore, L
5The size of middle induced voltage just directly reflects the size of load current.
Be added to A respectively by the detected signal voltage of above-mentioned testing circuit
1, A
2, A
3, A
4Input compares, and makes its output electronegative potential, control Driver Circuit work.
Three, main control unit is by time-base circuit, and relay and a delay circuit constitute, and adopt the low level triggering mode.Time-base circuit is made the master control driver, and rc-delay circuit is controlled resetting time.The public output of sampling testing circuit directly connects the trigger end of integrated circuit through diode, integrated circuit is connected across on the localpower, its threshold values end and discharge end link to each other with rc-delay circuit on being connected across localpower, have in fact constituted one and have had the regularly monostable circuit of link.
Under the normal condition, the output of switch integrated circuit is an electronegative potential.
When comparator is output as electronegative potential, low level triggering signal of switch integrated circuit trigger end input, the circuit upset, it is output as high potential, and simultaneously, the threshold values terminal voltage is discharged by discharge end.
When the comparator no-output is high potential, the input of switch integrated circuit trigger end no signal, through the time-delay process of a capacitance-resistance charging, integrated circuit resets, and it is output as electronegative potential.
The utility model adopts master switch (also can the adopt dropout coil of wire linked switch) positive pole of its coil one termination localpower, the output of a termination integrated circuit of power relay as electric power loop, its normally opened contact is serially connected in the current supply circuit, when switch integrated circuit output electronegative potential, there is electric current to flow through in the relay coil of wire, closing of contact power supply, when integrated circuit output high potential, no current flows through in the coil of wire.Contact after the closure disconnects power failure rapidly.
Four, self check mechanism is made up of Push switch and a current-limiting resistance, to do the usefulness of this device earth leakage protective sensitivity detection.Simultaneously, ML31 type piezo-resistance in parallel in electric power incoming line also is with the influence to safety utilization of electric power of anti-lightning strike and overvoltage.
In addition, also adopt multicolor luminous device respectively as overvoltage, under-voltage, touch (leakage) electricity, excess electricity consumption and normal power supply work indication.
The utility model is owing to adopt technique scheme; thereby have multiple functional, simple in structure, be active in one's movements, characteristics such as safe and reliable; effectively having solved planned assignment and safety utilization of electric power integrated protection problem, is a kind of comparatively desirable economize on electricity at present, safety utilization of electric power comprehensive protector.
Accompanying drawing is the utility model embodiment electrical schematic diagram
Present embodiment integrated circuit safety is 170V-250V with economize on electricity comprehensive protection device normal working voltage; the upper limit is started to control voltage 250V; lower limit starts to control voltage 170V, touches (leakage) electronic sensitivity 15mA that does, and the power supply action sensitivity of limiting the quantity of is adjustable; for cooperating DD28 type ammeter to use; the present embodiment sensitive 3A of setting of power supply that limits the quantity of from 10 seconds resetting times, crosses, under-voltage power-off protection sensitivity＜0.5 second; touch (leakage) electric power-off protection sensitivity＜0.1 second, monthly consumption＜0.5 degree.
Claims (5)
1. integrated circuit safety utilization of electric power economize on electricity comprehensive protection device, it is connected in parallel in the current supply circuit of household electricity, by localpower, signal receiving unit, main control unit and sensitivity testing agency form, and its signal receiving unit comprises sampling testing circuit and the voltage comparator circuit that links with it; It is characterized in that described sampling testing circuit comprises overvoltage, under-voltage, touch (leakage), overload, short-circuit signal detects, described overvoltage, under-voltage sample circuit is by the drag flow pipe, dropping resistor and two sample resistances are composed in series, the adjustable end of two sample resistances is respectively with last, the lower voltage limit comparison circuit links to each other, described touching (leakage) electricity and overload signal are picked up by zero-sequence transformer and common instrument transformer respectively, the secondary winding of two instrument transformers is respectively through adjustable resistance ground connection, the other end is received separately independently comparison circuit input through diode, described main control unit comprises negative or social connections, switch integrated circuit and relay (or dropout coil of wire coupled switch), negative or door connects the integrated circuit trigger end, integrated circuit is connected across on the localpower, and link to each other with rc-delay circuit, switch contact is serially connected in the current supply circuit.
2, integrated circuit safety utilization of electric power economize on electricity comprehensive protection device according to claim 1 is characterized in that also being connected in the electric power incoming line loop anti-lightning strike or overvoltage crowbar that piezo-resistance is formed.
3, integrated circuit safety utilization of electric power according to claim 1 joint comprehensive protection device is characterized in that touching (leakages) electricity, is connected to the luminous tube voltage stabilizing circuit in the power supply sampling testing circuit of limiting the quantity of, and the double as localpower is indicated.
4, integrated circuit safety utilization of electric power economize on electricity comprehensive protection device according to claim 1, its feature is that also the output of each comparison circuit is connected to luminescent device respectively and indicates as various power-off protection operating states.
5, integrated circuit safety utilization of electric power economize on electricity comprehensive protection device according to claim 1.Its feature is that also the integrated circuit switch output end of driver is connected to a luminescent device as this device normal power supply operating state indication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90217280 CN2078940U (en) | 1990-07-31 | 1990-07-31 | Power-economizing general protector using integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90217280 CN2078940U (en) | 1990-07-31 | 1990-07-31 | Power-economizing general protector using integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2078940U true CN2078940U (en) | 1991-06-12 |
Family
ID=4896299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90217280 Withdrawn CN2078940U (en) | 1990-07-31 | 1990-07-31 | Power-economizing general protector using integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2078940U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237671A (en) * | 2011-06-06 | 2011-11-09 | 刘圣平 | Comprehensive out-of-limit and out-of-control prevention potential limiting counting timing control circuit |
| CN102931634A (en) * | 2012-11-23 | 2013-02-13 | 黄柄皓 | Multifunctional circuit breaker |
-
1990
- 1990-07-31 CN CN 90217280 patent/CN2078940U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237671A (en) * | 2011-06-06 | 2011-11-09 | 刘圣平 | Comprehensive out-of-limit and out-of-control prevention potential limiting counting timing control circuit |
| CN102237671B (en) * | 2011-06-06 | 2016-10-05 | 刘圣平 | Surpass in reverse spacing counting and timing control circuit extremely out of control comprehensively |
| CN102931634A (en) * | 2012-11-23 | 2013-02-13 | 黄柄皓 | Multifunctional circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |