CN203324732U - Single chip microcomputer control time delay relay - Google Patents
Single chip microcomputer control time delay relay Download PDFInfo
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- CN203324732U CN203324732U CN201320386147XU CN201320386147U CN203324732U CN 203324732 U CN203324732 U CN 203324732U CN 201320386147X U CN201320386147X U CN 201320386147XU CN 201320386147 U CN201320386147 U CN 201320386147U CN 203324732 U CN203324732 U CN 203324732U
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Abstract
The utility model discloses a single chip microcomputer control time delay relay. A circuit comprises a power supply voltage stabilizing circuit, a reset circuit, a single chip microcomputer and an output circuit. The reset circuit comprises resistors R3, R4 and R5, a triode V4 and a voltage stabilizer tube V3. One end of the resistor R3 and an emitting electrode of the triode V4 are connected with a power supply anode terminal of the single chip microcomputer. The other end of the resistor R3 and one end of the resistor R4 are connected with a base electrode of the triode V4. The other end of the resistor R4 is connected with a cathode of the voltage stabilizer tube V3. An anode of the voltage stabilizer tube V3 and one end of the resistor R5 are connected with a power supply cathode terminal of the single chip microcomputer. The other end of the resistor R5 and a collector electrode of the triode V4 are connected with a reset terminal of the single chip microcomputer. According to the utility model, a reset threshold is arranged on the reset terminal of the single chip microcomputer so that the relay is not interfered by slow power on and instant shake off generated when a power supply is started during application and is not influenced by slow power down and an interference source of a residual voltage when the power supply is closed.
Description
Technical field
The utility model relates to a kind of timing relay, is specifically related to a kind of Single-chip Controlling timing relay.
Background technology
In recent ten years, the development of the aspects such as the especially space flight of China's electronic product, national defence, communication is swift and violent, and the quality and reliability of components and parts has been had to higher requirement.The Single-chip Controlling timing relay, as a kind of components and parts high to the time control accuracy, must have higher application reliability, could meet the needs of space flight, national defence model.In existing monolithic processor controlled timing relay, resetting of single-chip microcomputer is generally to adopt rc reset (RC pattern), be resistance and capacitances in series, the tie point of resistance and electric capacity and monolithic processor resetting end (RESET) join, it is mainly the characteristic of utilizing capacitor charge and discharge, make reset terminal (RESET) keep low level, allow monolithic processor resetting.Yet in machine system or equipment, due to power supply exist power up slowly, the interference sources such as moment slow power down while trembling disconnected or powered-down, residual voltage, monolithic processor controlled timing relay functional reliability is existed to impact.Therefore need the higher Single-chip Controlling timing relay of design application reliability.
The utility model content
Technical problem to be solved in the utility model is to provide the Single-chip Controlling timing relay that a kind of reliability is high.
For addressing the above problem, the utility model is realized by following scheme:
A kind of Single-chip Controlling timing relay, comprise the body circuit, and its body main circuit will be comprised of power supply stabilization circuit, reset circuit, single-chip microcomputer and output circuit; Above-mentioned power supply stabilization circuit is connected to power positive end and the negative pole end of single-chip microcomputer, and reset circuit is connected to reset terminal, power positive end and the negative pole end of single-chip microcomputer, and output circuit is connected to driving signal output part and the power positive end of single-chip microcomputer; The input end of power supply stabilization circuit forms the input end of body circuit, and the output terminal of output circuit forms the output terminal of body circuit; Described reset circuit comprises resistance R 3, R4, R5, triode V4, and stabilivolt V3; One end of resistance R 3, the emitter of triode V4 are connected with the power positive end of single-chip microcomputer; One end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode V4; The other end of resistance R 4 is connected with the negative pole of stabilivolt V3; One end of the positive pole of stabilivolt V3, resistance R 5 extremely is connected with the power-of single-chip microcomputer; The collector of the other end of resistance R 5, triode V4 is connected with the reset terminal of single-chip microcomputer.
In such scheme, described power supply stabilization circuit comprises resistance R 1, R2, capacitor C 1, C2, diode V1 and stabilivolt V2; After resistance R 2, capacitor C 1, capacitor C 2 threes are in parallel, be connected on positive pole and the negative pole two ends of stabilivolt V2; The negative pole of stabilivolt V2 is connected with the power positive end of single-chip microcomputer, and the positive pole of stabilivolt V2 extremely is connected with the power-of single-chip microcomputer; The power-of one end connection single-chip microcomputer of resistance R 1 is extreme, and the other end of resistance R 1 connects the positive pole of diode V1, and the negative pole of diode V1 forms the input cathode of body circuit, and the negative pole of stabilivolt V2 forms the input anode of body circuit.
In such scheme, described output circuit can comprise resistance R 6, R7, field effect transistor V6, diode V5, and electromagnetic relay K; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The drain electrode of field effect transistor V6 connects the negative pole of diode V5, the positive pole of the cathode connecting diode V1 of diode V5; The input circuit of electromagnetic relay K is connected on the both positive and negative polarity of diode V5, and the output loop of electromagnetic relay K forms the output terminal of body circuit.
In such scheme, described output circuit can also comprise resistance R 6, R7, and field effect transistor V6; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The source electrode of field effect transistor V6 and drain electrode form the output terminal of body circuit.
In such scheme, the rated operational voltage of described stabilivolt V3 is slightly less than or equals the minimum operating voltage of single-chip microcomputer.The rated operational voltage of described stabilivolt V2 is slightly larger than or equals the rated operational voltage of single-chip microcomputer.
Principle of work of the present utility model is: the reset terminal at single-chip microcomputer is set a reset threshold, and thresholding value of opening of reset circuit is slightly higher than the minimum operating voltage of single-chip microcomputer.When input end adds work voltage, power supply stabilization circuit carries out voltage stabilizing, and the power end of single-chip microcomputer has voltage, identical with the voltage of mu balanced circuit.Because there is the phenomenon slowly powered in power supply, the single-chip microcomputer operating voltage reaches the minimum operating voltage of single-chip microcomputer and while not reaching the thresholding that the thresholding reset circuit sets, reset terminal is low level signal, and single-chip microcomputer enters and the hold reset state, guarantees the single-chip microcomputer reliable reset; When mu balanced circuit voltage rises to threshold voltage when above, threshold circuit is open-minded, and reset terminal becomes high level, and reset signal finishes.And in power process during below power supply drops to threshold voltage and higher than the minimum operating voltage of single-chip microcomputer, single-chip microcomputer enters reset mode, when the mu balanced circuit power supply drops to the minimum operating voltage of single-chip microcomputer when following, the end that resets, single-chip microcomputer quits work.
Compared with prior art, the utility model, in machine system or equipment, slowly powers on while neither being subject to power initiation and trembles disconnected interference with moment, and while not being subject to power-off, the interference source of slow power down and residual voltage does not affect yet, and has the advantages that functional reliability is high.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of Single-chip Controlling timing relay.
The Single-chip Controlling time delay relay circuit schematic diagram that Fig. 2 is embodiment mono-.
The Single-chip Controlling time delay relay circuit schematic diagram that Fig. 3 is embodiment bis-.
Embodiment
Embodiment mono-:
A kind of Single-chip Controlling timing relay as shown in Figure 1, mainly is comprised of shell and the Single-chip Controlling time delay relay circuit 1, printed board assembly 2 and the bracket base assembly 3 that are arranged on enclosure.In this Single-chip Controlling timing relay, its Single-chip Controlling time delay relay circuit 1 is that the body circuit is core of the present utility model, and it mainly is comprised of power supply stabilization circuit, reset circuit, single-chip microcomputer and output circuit.Above-mentioned power supply stabilization circuit is connected to power positive end and the negative pole end of single-chip microcomputer, and reset circuit is connected to reset terminal, power positive end and the negative pole end of single-chip microcomputer, and output circuit is connected to driving signal output part and the power positive end of single-chip microcomputer.The input end of power supply stabilization circuit forms the input end of body circuit, and the output terminal of output circuit forms the output terminal of body circuit.
Above-mentioned power supply stabilization circuit comprises resistance R 1, R2, capacitor C 1, C2, diode V1 and stabilivolt V2; After resistance R 2, capacitor C 1, capacitor C 2 threes are in parallel, be connected on positive pole and the negative pole two ends of stabilivolt V2; The negative pole of stabilivolt V2 is connected with the power positive end of single-chip microcomputer, and the positive pole of stabilivolt V2 extremely is connected with the power-of single-chip microcomputer; The power-of one end connection single-chip microcomputer of resistance R 1 is extreme, and the other end of resistance R 1 connects the positive pole of diode V1, and the negative pole of diode V1 forms the input cathode of body circuit, and the negative pole of stabilivolt V2 forms the input anode of body circuit.On the type selecting of stabilivolt V2, require the rated operational voltage of stabilivolt V2 to be slightly larger than or to equal the rated operational voltage of single-chip microcomputer.
Above-mentioned reset circuit comprises resistance R 3, R4, R5, triode V4, and stabilivolt V3; One end of resistance R 3, the emitter of triode V4 are connected with the power positive end of single-chip microcomputer; One end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode V4; The other end of resistance R 4 is connected with the negative pole of stabilivolt V3; One end of the positive pole of stabilivolt V3, resistance R 5 extremely is connected with the power-of single-chip microcomputer; The collector of the other end of resistance R 5, triode V4 is connected with the reset terminal of single-chip microcomputer.On the type selecting of stabilivolt V3, require the rated operational voltage of stabilivolt V3 to be slightly less than or to equal the minimum operating voltage of single-chip microcomputer.
Above-mentioned single-chip microcomputer adopts single-chip microcomputer IC chip and peripheral circuit thereof commonly used at present to form.
Above-mentioned output circuit comprises resistance R 6, R7, and field effect transistor V6; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The source electrode of field effect transistor V6 and drain electrode form the output terminal of body circuit.Referring to Fig. 2.
The principle of work of the present embodiment one is as follows:
When input end, not during making alive, power supply stabilization circuit does not have voltage so thresholding reset circuit not to work, the single-chip microcomputer delay control circuit can not be worked, field effect transistor V6 is obstructed, no-output.When the input end making alive, power supply stabilization circuit starts voltage stabilizing, when the magnitude of voltage of mu balanced circuit do not reach the thresholding reset circuit open threshold value the time, monolithic processor resetting, when the voltage of mu balanced circuit reach the thresholding reset circuit open threshold value the time, single-chip microcomputer completes the delay procedure that brings into operation that resets.When the delay time of setting to after the single-chip microcomputer output drive signal cause field effect transistor V6 conducting and export.
Input end removes supply voltage, field effect transistor V6 no-output, it is following and during higher than the minimum operating voltage of single-chip microcomputer that simultaneously power supply drops to threshold voltage, single-chip microcomputer enters reset mode, when the mu balanced circuit power supply drops to the minimum operating voltage of single-chip microcomputer when following, the end that resets, single-chip microcomputer quits work.
Embodiment bis-:
Embodiment bis-is substantially identical with embodiment mono-, its difference is that the output circuit of embodiment bis-is different from the output circuit of embodiment mono-, the output circuit that is embodiment mono-adopts field effect transistor to realize the electricity isolation, the output circuit of embodiment bis-adopts field effect transistor and electromagnetic relay, except the electric buffer action with field effect transistor, the physical isolation that also there is electromagnetic relay, so embodiment bis-is better with respect to the isolation effect of embodiment mono-.
In the present embodiment two, described output circuit comprises resistance R 6, R7, field effect transistor V6, diode V5, and electromagnetic relay K; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The drain electrode of field effect transistor V6 connects the negative pole of diode V5, the positive pole of the cathode connecting diode V1 of diode V5; The input circuit of electromagnetic relay K is connected on the both positive and negative polarity of diode V5, and the output loop of electromagnetic relay K forms the output terminal of body circuit.Referring to Fig. 3.
The principle of work of the present embodiment two is as follows:
When input end not during making alive, power supply stabilization circuit does not have voltage so thresholding reset circuit not to work, the single-chip microcomputer delay control circuit can not be worked, field effect transistor V6 is obstructed, electromagnetic relay K can't work, output contact keeps original state (moving together contact is for often opening, and normally closed contact is normally closed).When the input end making alive, power supply stabilization circuit starts voltage stabilizing, when the magnitude of voltage of mu balanced circuit do not reach the thresholding reset circuit open threshold value the time, monolithic processor resetting, when the voltage of mu balanced circuit reach the thresholding reset circuit open threshold value the time, single-chip microcomputer completes the delay procedure that brings into operation that resets.When the delay time of setting to after the single-chip microcomputer output drive signal cause field effect transistor V6 conducting, electromagnetic relay K coil obtains electric work, output circuit closing of contact output (moving together contact be closed, and normally closed contact is disconnection).
Input end removes supply voltage, electromagnetic relay K coil losing electricity, the electromagnetic relay no-output, circuit contact restPoses (moving together contact disconnect, normally closed contact closure), and it is following and during higher than the minimum operating voltage of single-chip microcomputer that power supply drops to threshold voltage simultaneously, single-chip microcomputer enters reset mode, when the mu balanced circuit power supply drops to the minimum operating voltage of single-chip microcomputer when following, the end that resets, single-chip microcomputer quits work.
Claims (6)
1. the Single-chip Controlling timing relay, comprise the body circuit, and its body main circuit will be comprised of power supply stabilization circuit, reset circuit, single-chip microcomputer and output circuit; Above-mentioned power supply stabilization circuit is connected to power positive end and the negative pole end of single-chip microcomputer, and reset circuit is connected to reset terminal, power positive end and the negative pole end of single-chip microcomputer, and output circuit is connected to driving signal output part and the power positive end of single-chip microcomputer; The input end of power supply stabilization circuit forms the input end of body circuit, and the output terminal of output circuit forms the output terminal of body circuit; It is characterized in that:
Described reset circuit comprises resistance R 3, R4, R5, triode V4, and stabilivolt V3; One end of resistance R 3, the emitter of triode V4 are connected with the power positive end of single-chip microcomputer; One end of the other end of resistance R 3, resistance R 4 is connected with the base stage of triode V4; The other end of resistance R 4 is connected with the negative pole of stabilivolt V3; One end of the positive pole of stabilivolt V3, resistance R 5 extremely is connected with the power-of single-chip microcomputer; The collector of the other end of resistance R 5, triode V4 is connected with the reset terminal of single-chip microcomputer.
2. Single-chip Controlling timing relay according to claim 1 is characterized in that:
The rated operational voltage of described stabilivolt V3 is less than or equal to the minimum operating voltage of single-chip microcomputer.
3. Single-chip Controlling timing relay according to claim 1 is characterized in that:
Described power supply stabilization circuit comprises resistance R 1, R2, capacitor C 1, C2, diode V1 and stabilivolt V2; After resistance R 2, capacitor C 1, capacitor C 2 threes are in parallel, be connected on positive pole and the negative pole two ends of stabilivolt V2; The negative pole of stabilivolt V2 is connected with the power positive end of single-chip microcomputer, and the positive pole of stabilivolt V2 extremely is connected with the power-of single-chip microcomputer; The power-of one end connection single-chip microcomputer of resistance R 1 is extreme, and the other end of resistance R 1 connects the positive pole of diode V1, and the negative pole of diode V1 forms the input cathode of body circuit, and the negative pole of stabilivolt V2 forms the input anode of body circuit.
4. Single-chip Controlling timing relay according to claim 3 is characterized in that:
The rated operational voltage of described stabilivolt V2 is more than or equal to the rated operational voltage of single-chip microcomputer.
5. Single-chip Controlling timing relay according to claim 3 is characterized in that:
Described output circuit comprises resistance R 6, R7, field effect transistor V6, diode V5 and electromagnetic relay K; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The drain electrode of field effect transistor V6 connects the negative pole of diode V5, the positive pole of the cathode connecting diode V1 of diode V5; The input circuit of electromagnetic relay K is connected on the both positive and negative polarity of diode V5, and the output loop of electromagnetic relay K forms the output terminal of body circuit.
6. Single-chip Controlling timing relay according to claim 1 is characterized in that:
Described output circuit comprises resistance R 6, R7 and field effect transistor V6; One end of resistance R 6 connects the driving signal output part of single-chip microcomputer, and an end of the other end of resistance R 6, resistance R 7 is connected with the grid of field effect transistor V6; The other end of resistance R 7, the source electrode of field effect transistor V6 are connected with the power positive end of single-chip microcomputer; The source electrode of field effect transistor V6 and drain electrode form the output terminal of body circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320386147XU CN203324732U (en) | 2013-06-27 | 2013-06-27 | Single chip microcomputer control time delay relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320386147XU CN203324732U (en) | 2013-06-27 | 2013-06-27 | Single chip microcomputer control time delay relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203324732U true CN203324732U (en) | 2013-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320386147XU Expired - Lifetime CN203324732U (en) | 2013-06-27 | 2013-06-27 | Single chip microcomputer control time delay relay |
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| Country | Link |
|---|---|
| CN (1) | CN203324732U (en) |
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2013
- 2013-06-27 CN CN201320386147XU patent/CN203324732U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |