CN203311187U - Control device used for realizing intermittent work of single-chip microcomputer - Google Patents
Control device used for realizing intermittent work of single-chip microcomputer Download PDFInfo
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- CN203311187U CN203311187U CN2013203690688U CN201320369068U CN203311187U CN 203311187 U CN203311187 U CN 203311187U CN 2013203690688 U CN2013203690688 U CN 2013203690688U CN 201320369068 U CN201320369068 U CN 201320369068U CN 203311187 U CN203311187 U CN 203311187U
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Abstract
The utility model relates to a control device used for realizing intermittent work of a single-chip microcomputer. The control device comprises a trigger signal generating system and a transistor time-delay relay, wherein the trigger signal generating system is provided with a first delay stage which is used for delaying an trigger signal; the transistor time-delay relay is electrically connected with the trigger signal generating system, is provided with a second delay stage, and is used for receiving the trigger signal to switch on, delay and switch off a working power supply of the single-chip microcomputer; and the delay amount of the first delay stage is larger than that of the second delay stage. The transistor time-delay relay comprises a trigger circuit and a rapid discharging recovering circuit, wherein the trigger circuit comprises a field effect transistor, a resistor and a capacitor, and the rapid discharging recovering circuit comprises a field effect transistor and resistors. The transistor time-delay relay has no contacts, and is small in size, low in power consumption, low in cost, good in interference resistance, stable in performance and convenient to package in an integrated manner; and metering is accurate when the transistor time-delay relay is applied to water, electricity and gas intelligent meters and the like.
Description
Technical field
The utility model relates to a kind of timing relay, is applicable to counting assembly or the similar control device of the measuring instruments such as water, electricity, gas table, specifically, relates to a kind ofly be used to realizing single-chip microcomputer intermittently used control device, belongs to electronic technology field.
Background technology
The sensing gauge counting apparatus of existing various measuring instruments, be generally the mode that adopts single-chip microcomputer collection measurement sensory signal, as: as described in Chinese patent 20220531067.4,201110267269.2,201020544489.6.These modes are all to allow single-chip microcomputer be in for a long time the state of energising work, then gather pulse or the switching signal that comes from sensor.When no matter whether signal come or not,, and single-chip microcomputer all will keep the open state of switching on.A lot of problems have been brought thus.At first be exactly the problem of external interference, in the time of single-chip microcomputer booting wait, if meet than high reject signal, counting will produce error, even directly causes single chip microcomputer halt; Next is the problem of power consumption, although the single-chip microcomputer power consumption is few, and small for only depending on (even button) battery powered circuit, further power saving is also necessary; In addition, because irregular variation and the single-chip microcomputer of extraneous signal is difficult to the reasons such as identification, cause the situation of counting error also a lot; The machine failure rate problem that also having starts shooting owing to switching on for a long time brings etc.In view of above situation, also have some same devices to adopt the working method of single-chip microcomputer standby dormancy, but this mode is "on" position after all, single-chip microcomputer still is difficult to resist external various interference.
The utility model content
The technical problems to be solved in the utility model is for above deficiency, provide a kind of be used to realizing single-chip microcomputer intermittently used control device, overcome the defect that the power consumption that when in the prior art, single-chip microcomputer was not counted, the energising standby brought is many, count inaccurate and operation troubles.After adopting control device of the present utility model; realized single-chip microcomputer energising work when counting; after counting, outage is shut down; allow the number of times of single-chip microcomputer start-stop as new working method and the device of counts; avoided the interference of magnetoelectricity, static, thunderbolt; solved the inaccurate root problem of gauge table teletransmission metering, and control device adopts the break-make of transistor timing relay control single chip computer, have advantages of that volume is little, little power consumption, cost are low, be convenient to encapsulate and stable performance.
For solving above technical matters, the utility model by the following technical solutions: a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described control device comprises:
The trigger pip generation device, be used for producing trigger pip and have the first delay-level, with delayed trigger signal;
The transistor timing relay, be electrically connected to the trigger pip generation device and have the second delay-level, receives trigger pip and close by the working power conducting of single-chip microcomputer and after postponing;
The retardation of described the first delay-level is larger than the retardation of the second delay-level.
A kind of prioritization scheme, described trigger pip generation device comprises:
Inductive switch, an end is connected with power supply, and the other end is connected with the transistor timing relay;
Sensing element, be arranged on character wheel, and when character wheel rotated, sensing element can coordinate with inductive switch.
Another kind of prioritization scheme, described sensing element is permanent magnet.
Another prioritization scheme, the quantity of described sensing element are one;
Described inductive switch is dry reed switch or Hall switch.
Further prioritization scheme, the quantity of described sensing element is two, the polarity of two sensing elements is opposite and be symmetricly set on character wheel;
Described trigger pip generation device also comprises that is used for the auxiliary induction element coordinated with sensing element.Prioritization scheme further, described inductive switch is dry reed switch.
Prioritization scheme further, described transistor timing relay comprises:
Trigger circuit, be comprised of field effect transistor Q1, resistance R 1 and capacitor C 1;
The source electrode of described field effect transistor Q1 connects the output terminal of inductive switch;
The drain electrode of described field effect transistor Q1 connects single-chip microcomputer;
The grid of described field effect transistor Q1 is through capacitor C 1 ground connection;
Described resistance R 1 is connected between the grid of the source electrode of field effect transistor Q1 and field effect transistor Q1.
A kind of prioritization scheme, described transistor timing relay also comprises:
The rapid discharge reflex circuit, be comprised of field effect transistor Q2, resistance R 2, resistance R 3 and resistance R 4;
The end of the grid connecting resistance R2 of described field effect transistor Q2, an end of resistance R 3;
The source electrode of another termination field effect transistor Q1 of described resistance R 2;
The other end ground connection of described resistance R 3;
The source electrode of described field effect transistor Q2 connects the grid of field effect transistor Q1;
The drain electrode of described field effect transistor Q2 is through resistance R 4 ground connection.
Another kind of prioritization scheme, described transistor timing relay also comprises the rapid discharge reflex circuit, described rapid discharge reflex circuit is resistance R, the output terminal of an end in contact signalling generation device of resistance R, the other end ground connection of resistance R.
After the utility model adopts above technical scheme; compared with prior art; have the following advantages: transistor timing relay control single chip computer conducting when the trigger pip generation device sends signal; after completing counting task, time delay and finishing by transistor timing relay control single chip computer automatic shutdown; realized single-chip microcomputer energising work when counting; after counting, outage is shut down; allow the number of times of single-chip microcomputer start-stop as new working method and the device of counts; avoided the interference of magnetoelectricity, static, thunderbolt, accurate measurement.
Described control device adopts the break-make of transistor timing relay control single chip computer, and the transistor timing relay is comprised of field effect transistor, electric capacity and resistance, contactless, volume is little, little power consumption, cost is low, anti-interference and stable performance, is convenient to integration packaging.
Below in conjunction with drawings and Examples, the utility model is elaborated.
The accompanying drawing explanation
Accompanying drawing 2 is electrical schematic diagrams of control device in the utility model embodiment 1;
Accompanying drawing 3 is electrical schematic diagrams of control device in the utility model embodiment 2;
Accompanying drawing 4 is another kind of electrical schematic diagrams of control device in the utility model embodiment;
In figure,
1-transistor timing relay, 2-single-chip microcomputer, 3-character wheel, 4-inductive switch, 5-sensing element, 6-auxiliary induction element, 7-trigger pip generation device, 8-trigger circuit, 9-rapid discharge reflex circuit.
Embodiment
As shown in Figure 2, described trigger pip generation device 7 comprises inductive switch 4, one end of inductive switch 4 is connected with power supply, the other end of inductive switch 4 is connected with transistor timing relay 1, one side of inductive switch 4 is provided with character wheel 3, character wheel 3 is provided with a sensing element 5, and sensing element 5 rotates with the rotation of character wheel 3, and when character wheel 3 rotated, sensing element 5 coordinated with inductive switch 4.
Described transistor timing relay 1 comprises trigger circuit 8 and the rapid discharge reflex circuit 9 of electrical connection, described trigger circuit 8 comprise field effect transistor Q1, resistance R 1 and capacitor C 1, the source electrode of field effect transistor Q1 connects the output terminal of inductive switch 4, the drain electrode of field effect transistor Q1 connects single-chip microcomputer 2, the grid of field effect transistor Q1 is through capacitor C 1 ground connection, and resistance R 1 is connected between the grid of the source electrode of field effect transistor Q1 and field effect transistor Q1.
Described rapid discharge reflex circuit 9 comprises field effect transistor Q2, resistance R 2, resistance R 3 and resistance R 4, the end of the grid connecting resistance R2 of field effect transistor Q2, an end of resistance R 3, the source electrode of another termination field effect transistor Q1 of resistance R 2, the other end ground connection of resistance R 3, the source electrode of field effect transistor Q2 connects the grid of field effect transistor Q1, and the drain electrode of field effect transistor Q2 is through resistance R 4 ground connection.
In the present embodiment, inductive switch 4 is selected dry reed switch, sensing element 5 is selected permanent magnet, during application, character wheel 3 rotates, when permanent magnet turns in the induction range of dry reed switch with character wheel 3, after the dry reed switch conducting, character wheel 3 is rotated further, electric current arrives the grid of field effect transistor Q1 and the tie point of capacitor C 1 through resistance R 1, and now this current potential is low, and field effect transistor Q1 is in conducting state, electric current provides working power through field effect transistor Q1 for single-chip microcomputer 2, and single-chip microcomputer 2 works on power.Simultaneously, electric current is through 1 charging of 2 pairs of capacitor C of resistance R, capacitor C 1 is full of the retardation that the electric time equals the second delay-level, when the voltage of capacitor C 1 is elevated to the grid threshold voltage of field effect transistor Q1 when above, field effect transistor Q1 ends, and has cut off the power supply of single-chip microcomputer 2, and now single-chip microcomputer 2 has also completed preplanned mission, power-off shutdown, reached the purpose of delay switching-off thus.When permanent magnet turned to character wheel 3 induction range that leaves dry reed switch, dry reed switch disconnected, power remove.Permanent magnet and dry reed switch are from starting to be engaged to the retardation that the time that finishes to coordinate equals the first delay-level.Now, the grid of field effect transistor Q2 is through resistance R 3 ground connection, current potential step-down, field effect transistor Q2 conducting, the electric current that capacitor C 1 stores discharges fast through field effect transistor Q2 and resistance R 4, and the grid voltage that makes field effect transistor Q1 is step-down again, return to original state, wait for that dry reed switch is connected next time.Because the retardation of the first delay-level is larger than the retardation of the second delay-level, so, transistor timing relay 1 first delayed startup single-chip microcomputer 2, after having completed counting of the task of starting shooting, again single-chip microcomputer 2 is shut down, then dry reed switch disconnects again, returns to original state, goes round and begins again with this.
By the value that changes resistance R 1 and capacitor C 1, can adjust the time of delay switching-off.
When the sensing element 5 described in the present embodiment was permanent magnet, inductive switch 4 also can be selected Hall switch.
As shown in Figure 3, described trigger pip generation device 7 comprises inductive switch 4, described inductive switch 4 is dry reed switch, one end of inductive switch 4 is connected with power supply, the other end of inductive switch 4 is connected with transistor timing relay 1, one side of inductive switch 4 is provided with auxiliary induction element 6, described auxiliary induction element 6 is permanent magnet, in the position corresponding with inductive switch 4, be provided with character wheel 3, character wheel 3 is provided with one group of opposite polarity sensing element 5, described sensing element 5 is permanent magnet, sensing element 5 rotates with the rotation of character wheel 3, inductive switch 4 closed or disconnection with the opposed polarity of induction element 5, and remain closed or off-state, until the sensing element 5 of another polarity could transition status during near inductive switch 4, auxiliary induction element 6 is be used to remaining closed or off-state inductive switch 4, increase distance of reaction, improve reliability of contact.Adopt this auxiliary induction element 6 and be provided with the control mode of the sensing element 5 that one group of magnetic is opposite, make inductive switch 4 have the self-retaining function of logical and disconnected two states, make the state of power supply input have suitable stability and isotropism, the stroke of opening and closing respectively accounts for 50%, has coordinated better the work of transistor timing relay 1.
Described transistor timing relay 1 comprises trigger circuit 8 and the rapid discharge reflex circuit 9 of electrical connection, described trigger circuit 8 comprise field effect transistor Q1, resistance R 1 and capacitor C 1, the source electrode of field effect transistor Q1 connects the output terminal of trigger pip generation device 7, it is inductive switch 4, the drain electrode of field effect transistor Q1 connects single-chip microcomputer 2, the grid of field effect transistor Q1 is through capacitor C 1 ground connection, and resistance R 1 is connected between the grid of the source electrode of field effect transistor Q1 and field effect transistor Q1.
Described rapid discharge reflex circuit 9 comprises field effect transistor Q2, resistance R 2, resistance R 3 and resistance R 4, the end of the grid connecting resistance R2 of field effect transistor Q2, an end of resistance R 3, the source electrode of another termination field effect transistor Q1 of resistance R 2, the other end ground connection of resistance R 3, the source electrode of field effect transistor Q2 connects the grid of field effect transistor Q1, and the drain electrode of field effect transistor Q2 is through resistance R 4 ground connection.
In the present embodiment, the principle of work of control device is with embodiment 1, therefore repeat no more.
Field effect transistor described in above-described embodiment also can select switching tube, thyristor, tunneltron OR circuit etc. to substitute as the control circuit of on-off circuit, and its course of work is identical with the switch control action principle of field effect transistor.
Output terminal load described in above-described embodiment also can be other control elements beyond single-chip microcomputer.
For inductive switch 4, open not occasion frequently, the rapid discharge reflex circuit 9 in above embodiment also can realize by a resistance R, and as shown in Figure 4, the charging of capacitor C 1 discharges by resistance R 1 and resistance R.Even do not need to arrange rapid discharge reflex circuit 9, can restPose with the electric leakage of capacitor C after power remove 1 self, according to statement, those skilled in the art can be clearly clear and definite this technical scheme, therefore no longer accompanying drawing means.
The above is giving an example of the utility model preferred forms, and the part of wherein not addressing in detail is those of ordinary skills' common practise.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present utility model, also within protection domain of the present utility model.
Claims (9)
1. one kind be used to realizing single-chip microcomputer intermittently used control device, and it is characterized in that: described control device comprises:
Trigger pip generation device (7), be used for producing trigger pip and have the first delay-level, with delayed trigger signal;
Transistor timing relay (1), be electrically connected to trigger pip generation device (7) and have the second delay-level, receives trigger pip and close by the working power conducting of single-chip microcomputer (2) and after postponing;
The retardation of described the first delay-level is larger than the retardation of the second delay-level.
2. according to claim 1 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described trigger pip generation device (7) comprising:
Inductive switch (4), an end is connected with power supply, and the other end is connected with transistor timing relay (1);
Sensing element (5), be arranged on character wheel (3) upper, and when character wheel (3) rotated, sensing element (5) can coordinate with inductive switch (4).
3. according to claim 2 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described sensing element (5) is permanent magnet.
4. according to claim 3 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: the quantity of described sensing element (5) is one;
Described inductive switch (4) is dry reed switch or Hall switch.
5. according to claim 3 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: the quantity of described sensing element (5) is two, and the polarity of two sensing elements (5) is opposite and be symmetricly set on character wheel (3);
Described trigger pip generation device (7) also comprises that is used for the auxiliary induction element (6) coordinated with sensing element (5).
6. according to claim 5 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described inductive switch (4) is dry reed switch.
7. one of them is described a kind of be used to realizing single-chip microcomputer intermittently used control device according to claim 2-6, and it is characterized in that: described transistor timing relay (1) comprising:
Trigger circuit (8), be comprised of field effect transistor Q1, resistance R 1 and capacitor C 1;
The source electrode of described field effect transistor Q1 connects the output terminal of inductive switch (4);
The drain electrode of described field effect transistor Q1 connects single-chip microcomputer (2);
The grid of described field effect transistor Q1 is through capacitor C 1 ground connection;
Described resistance R 1 is connected between the grid of the source electrode of field effect transistor Q1 and field effect transistor Q1.
8. according to claim 7 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described transistor timing relay (1) also comprises:
Rapid discharge reflex circuit (9), be comprised of field effect transistor Q2, resistance R 2, resistance R 3 and resistance R 4;
The end of the grid connecting resistance R2 of described field effect transistor Q2, an end of resistance R 3;
The source electrode of another termination field effect transistor Q1 of described resistance R 2;
The other end ground connection of described resistance R 3;
The source electrode of described field effect transistor Q2 connects the grid of field effect transistor Q1;
The drain electrode of described field effect transistor Q2 is through resistance R 4 ground connection.
9. according to claim 7 a kind of be used to realizing single-chip microcomputer intermittently used control device, it is characterized in that: described transistor timing relay (1) also comprises rapid discharge reflex circuit (9), described rapid discharge reflex circuit (9) is resistance R, the output terminal of one end in contact signalling generation device (7) of resistance R, the other end ground connection of resistance R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013203690688U CN203311187U (en) | 2013-06-26 | 2013-06-26 | Control device used for realizing intermittent work of single-chip microcomputer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203690688U CN203311187U (en) | 2013-06-26 | 2013-06-26 | Control device used for realizing intermittent work of single-chip microcomputer |
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| CN203311187U true CN203311187U (en) | 2013-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324108A (en) * | 2013-06-26 | 2013-09-25 | 山东潍微科技股份有限公司 | Control device used for achieving intermittent service of single-chip microcomputer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324108A (en) * | 2013-06-26 | 2013-09-25 | 山东潍微科技股份有限公司 | Control device used for achieving intermittent service of single-chip microcomputer |
| CN103324108B (en) * | 2013-06-26 | 2016-07-06 | 山东潍微科技股份有限公司 | One is used for realizing single-chip microcomputer intermittently used and controls device |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20160626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |