CN204615792U - A kind of Wide range precision timer circuit - Google Patents
A kind of Wide range precision timer circuit Download PDFInfo
- Publication number
- CN204615792U CN204615792U CN201520313192.1U CN201520313192U CN204615792U CN 204615792 U CN204615792 U CN 204615792U CN 201520313192 U CN201520313192 U CN 201520313192U CN 204615792 U CN204615792 U CN 204615792U
- Authority
- CN
- China
- Prior art keywords
- pin
- chip
- diode
- negative pole
- wide range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Predetermined Time Intervals (AREA)
Abstract
The utility model is a kind of Wide range precision timer circuit, solves the problem that traditional timer circuit cost is high, control precision is not high, control range is little and time step is grown up.A kind of Wide range precision timer circuit, comprise the reference clock generator be made up of chip U1 and the binary counting timer be made up of chip U2, described chip U1 and described chip U2 is CD4060.
Description
Technical field
The utility model relates to timer control circuit field, particularly a kind of Wide range precision timer circuit.
Background technology
In delays time to control field, conventional control circuit has two kinds.One carries out delays time to control by single-chip microcomputer, and the shortcoming of design is like this: 1) cost is high; 2) software programming is needed.Also have one to be adopt RC oscillator to design, the shortcoming of design is like this: 1) control precision is not high; 2) control range is little; 3) time step is grown up, time setting underaction.
Utility model content
The utility model is a kind of Wide range precision timer circuit, solves the problem that traditional timer circuit cost is high, control precision is not high, control range is little and time step is grown up.
For achieving the above object, technical solutions of the utility model are:
A kind of Wide range precision timer circuit, comprise the reference clock generator be made up of chip U1 and the binary counting timer be made up of chip U2, described chip U1 and described chip U2 is CD4060.
Further, described reference clock generator comprises chip U1, electric capacity C1, crystal oscillator X1, GND in analog, resistance R2, power Vcc, 16th pin of described chip U1 is connected with power Vcc, 12nd pin of described chip U1 and the 8th pin are connected with GND in analog, described resistance R2 one end is connected with the 11st pin of described chip U1, the other end is connected with the 10th pin of described chip U1, described electric capacity C1 one end is connected with the 11st pin of described chip U1, be connected with the 10th pin of described chip U1 after the other end and described crystal oscillator X1 connect, arbitrary pin in 1 to 7 pin of described chip U1 and 13 to 15 pin is as the output of described pedestal clock generator.
Further, described binary counting timer comprises chip U2, NAND gate U3A, diode D1, diode D2, diode D3, diode D4, resistance R1, power supply V12 and inverter U4A, 16th pin of described chip U2 is connected with described power Vcc, 8th pin of described chip U2 is connected with described GND in analog, 11st pin of described chip U2 is connected with the output of described NAND gate U3A, 1st pin of the input of described NAND gate is connected with the output of described inverter U4A, 2nd pin of the input of described NAND gate is connected with the output of described reference clock generator, described diode D1, described diode D2, described diode D3, after described diode D4 parallel connection, its positive pole is connected with the input of described inverter U4A, described resistance R1 one end is connected with the positive pole of described diode D1, the other end is connected with described power supply V12, the negative pole of described diode D1, the negative pole of described diode D2, the negative pole of described diode D3, the negative pole of described diode D4 all can be connected with arbitrary pin of 1 to 7 pin of described chip U2 and 13 to 15 pin.
Further, the 2nd pin of described U1 is connected with the 2nd pin of the input of described NAND gate U3A; The negative pole of described diode D1 is connected with the 6th pin of described chip U2,1st pin of chip U2 described in the negative pole of described diode D2 connects, 2nd pin of chip U2 described in the negative pole of described diode D3 connects, and the 3rd pin of chip U2 described in the negative pole of described diode D4 connects.
Preferably, the frequency of described crystal oscillator X1 is 32768HZ.
Further, the He Ne laser scope of described reference clock generator is 2HZ-2048HZ.
Further, the timing range of described binary counting timer is 3.9 milliseconds to 7676 seconds.
From above-mentioned to description of the present utility model, compared to the prior art, the utility model tool has the following advantages:
One, the utility model adopts CD4060 chip, compares, greatly reduce production cost with the timer of use single-chip microcomputer.
Two, reference clock frequency scope of the present utility model is from 2HZ-2048HZ, timing range from 3.9 milliseconds-7676 seconds, relative to RC oscillating circuit, there is higher control precision and larger control range.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the circuit connection diagram of the utility model embodiment one;
Fig. 2 is the circuit connection diagram of the utility model embodiment two;
Fig. 3 is the circuit connection diagram of the utility model embodiment three.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Referring to figs. 1 through Fig. 3, a kind of Wide range precision timer circuit, comprises the reference clock generator be made up of chip U1 and the binary counting timer be made up of chip U2, and described chip U1 and described chip U2 is CD4060.
Described reference clock generator comprises chip U1, electric capacity C1, crystal oscillator X1, GND in analog, resistance R2, power Vcc, 16th pin of described chip U1 is connected with power Vcc, 12nd pin of described chip U1 and the 8th pin are connected with GND in analog, described resistance R2 one end is connected with the 11st pin of described chip U1, the other end is connected with the 10th pin of described chip U1, described electric capacity C1 one end is connected with the 11st pin of described chip U1, be connected with the 10th pin of described chip U1 after the other end and described crystal oscillator X1 connect, arbitrary pin in 1 to 7 pin of described chip U1 and 13 to 15 pin is as the output of described pedestal clock generator.
Described binary counting timer comprises chip U2, NAND gate U3A, diode D1, diode D2, diode D3, diode D4, resistance R1, power supply V12 and inverter U4A, 16th pin of described chip U2 is connected with described power Vcc, 8th pin of described chip U2 is connected with described GND in analog, 11st pin of described chip U2 is connected with the output of described NAND gate U3A, 1st pin of the input of described NAND gate is connected with the output of described inverter U4A, 2nd pin of the input of described NAND gate is connected with the output of described reference clock generator, described diode D1, described diode D2, described diode D3, after described diode D4 parallel connection, its positive pole is connected with the input of described inverter U4A, described resistance R1 one end is connected with the positive pole of described diode D1, the other end is connected with described power supply V12, the negative pole of described diode D1, the negative pole of described diode D2, the negative pole of described diode D3, the negative pole of described diode D4 all can be connected with arbitrary pin of 1 to 7 pin of described chip U2 and 13 to 15 pin.
Carry out selection reference frequency by reference clock generator, select output pin by binary counting timer, realize timing function by both cooperations.
Preferably, the frequency of described crystal oscillator X1 is 32768HZ.
The He Ne laser scope of described reference clock generator is 2HZ-2048HZ.
The timing range of described binary counting timer is 3.9 milliseconds to 7676 seconds.
Embodiment one:
Want timing 1 hour, reference clock generator is with 4HZ, and namely 13 frequency divisions are as reference frequency, and as shown in Figure 1, the 2nd pin of described U1 is connected with the 2nd pin of the input of described NAND gate U3A; The negative pole of described diode D1 is connected with the 6th pin of described chip U2,1st pin of chip U2 described in the negative pole of described diode D2 connects, 2nd pin of chip U2 described in the negative pole of described diode D3 connects, 3rd pin of chip U2 described in the negative pole of described diode D4 connects, when inverter U4A exports as high level, the output valve of NAND gate U3A is determined by the low and high level of reference clock; Because 1hour=3600s, again because reference clock frequency is 4HZ, so count value is: 3600*4=14400, binary system is converted to by 14400, its value is: 111,000 0,100 0000, namely when Q14, Q13, Q12 and Q7 of chip U2 are 1, namely when chip U2 selects to realize the timing requirement of 1 hour when 1 pin, 2 pin, 3 pin and 6 pin.
Embodiment two:
Want timing half an hour, reference clock generator is with 8HZ, and namely 12 frequency divisions are as reference frequency, and as shown in Figure 2, the 2nd pin of described U1 is connected with the 2nd pin of the input of described NAND gate U3A; The negative pole of described diode D1 is connected with the 6th pin of described chip U2,1st pin of chip U2 described in the negative pole of described diode D2 connects, 2nd pin of chip U2 described in the negative pole of described diode D3 connects, 3rd pin of chip U2 described in the negative pole of described diode D4 connects, when inverter U4A exports as high level, the output valve of NAND gate U3A is determined by the low and high level of reference clock; Because 0.5hour=1800s, again because reference clock frequency is 8HZ, so count value is: 1800*8=14400, binary system is converted to by 14400, its value is: 11 1,000 0,100 0000, namely when Q14, Q13, Q12 and Q7 of chip U2 are 1, namely when chip U2 selects to realize timing halfhour requirement when 1 pin, 2 pin, 3 pin and 6 pin.
Embodiment three:
Want timing 3.9ms, reference clock generator is with 2048HZ, and namely 4 frequency divisions are as reference frequency, and as shown in Figure 3, the 2nd pin of described U1 is connected with the 2nd pin of the input of described NAND gate U3A; The negative pole of described diode D1 is connected with the 7th pin of described chip U2, and when inverter U4A exports as high level, the output valve of NAND gate U3A is determined by the low and high level of reference clock; Because 3.9ms=0.0039s, again because reference clock frequency is 2048HZ, so count value is: 0.0039*2048=8, binary system is converted to by 8, its value is: 00 0,000 0,000 1000, when namely the Q4 of chip U2 is 1, namely can realize the requirement of timing 3.9ms when chip U2 selects 7 pin.
Above-mentioned explanation illustrate and describes preferred embodiment of the present utility model, as previously mentioned, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in utility model contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection range of the utility model claims.
Claims (7)
1. a Wide range precision timer circuit, is characterized in that: comprise the reference clock generator be made up of chip U1 and the binary counting timer be made up of chip U2, and described chip U1 and described chip U2 is CD4060.
2. a kind of Wide range precision timer circuit as claimed in claim 1, it is characterized in that: described reference clock generator comprises chip U1, electric capacity C1, crystal oscillator X1, GND in analog, resistance R2, power Vcc, 16th pin of described chip U1 is connected with power Vcc, 12nd pin of described chip U1 and the 8th pin are connected with GND in analog, described resistance R2 one end is connected with the 11st pin of described chip U1, the other end is connected with the 10th pin of described chip U1, described electric capacity C1 one end is connected with the 11st pin of described chip U1, be connected with the 10th pin of described chip U1 after the other end and described crystal oscillator X1 connect, arbitrary pin in 1 to 7 pin of described chip U1 and 13 to 15 pin is as the output of described pedestal clock generator.
3. a kind of Wide range precision timer circuit as claimed in claim 2, is characterized in that: described binary counting timer comprises chip U2, NAND gate U3A, diode D1, diode D2, diode D3, diode D4, resistance R1, power supply V12 and inverter U4A, 16th pin of described chip U2 is connected with described power Vcc, 8th pin of described chip U2 is connected with described GND in analog, 11st pin of described chip U2 is connected with the output of described NAND gate U3A, 1st pin of the input of described NAND gate is connected with the output of described inverter U4A, 2nd pin of the input of described NAND gate is connected with the output of described reference clock generator, described diode D1, described diode D2, described diode D3, after described diode D4 parallel connection, its positive pole is connected with the input of described inverter U4A, described resistance R1 one end is connected with the positive pole of described diode D1, the other end is connected with described power supply V12, the negative pole of described diode D1, the negative pole of described diode D2, the negative pole of described diode D3, the negative pole of described diode D4 all can be connected with arbitrary pin of 1 to 7 pin of described chip U2 and 13 to 15 pin.
4. a kind of Wide range precision timer circuit as claimed in claim 3, is characterized in that: the 2nd pin of described U1 is connected with the 2nd pin of the input of described NAND gate U3A; The negative pole of described diode D1 is connected with the 6th pin of described chip U2,1st pin of chip U2 described in the negative pole of described diode D2 connects, 2nd pin of chip U2 described in the negative pole of described diode D3 connects, and the 3rd pin of chip U2 described in the negative pole of described diode D4 connects.
5. a kind of Wide range precision timer circuit as described in any one of claim 2-4, is characterized in that: the frequency of described crystal oscillator X1 is 32768HZ.
6. a kind of Wide range precision timer circuit as described in any one of claim 1-4, is characterized in that: the He Ne laser scope of described reference clock generator is 2HZ-2048HZ.
7. a kind of Wide range precision timer circuit as described in any one of claim 1-4, is characterized in that: the timing range of described binary counting timer is 3.9 milliseconds to 7676 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313192.1U CN204615792U (en) | 2015-05-15 | 2015-05-15 | A kind of Wide range precision timer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520313192.1U CN204615792U (en) | 2015-05-15 | 2015-05-15 | A kind of Wide range precision timer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204615792U true CN204615792U (en) | 2015-09-02 |
Family
ID=53968313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520313192.1U Active CN204615792U (en) | 2015-05-15 | 2015-05-15 | A kind of Wide range precision timer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204615792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836557A (en) * | 2015-05-15 | 2015-08-12 | 中航太克（厦门）电子有限公司 | Precise wide range timer circuit |
-
2015
- 2015-05-15 CN CN201520313192.1U patent/CN204615792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836557A (en) * | 2015-05-15 | 2015-08-12 | 中航太克（厦门）电子有限公司 | Precise wide range timer circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104821484A (en) | Pulse modulation drive circuit of miniature semiconductor laser | |
| CN105138040A (en) | Intelligent water temperature control system and method | |
| CN204615792U (en) | A kind of Wide range precision timer circuit | |
| CN104836557A (en) | Precise wide range timer circuit | |
| CN203023094U (en) | Fan temperature-control speed-regulation circuit | |
| CN201937561U (en) | Low power consumption delay programmable power on reset (POR) circuit | |
| CN203366699U (en) | Nixie tube drive circuit | |
| CN102298955B (en) | Alarm sound chip, internal circuit and application circuit thereof | |
| CN204679881U (en) | A kind of temperature collection circuit being applicable to single-chip microcomputer | |
| CN204794941U (en) | Voltage selector | |
| CN204597897U (en) | A kind of constant-temperature crystal oscillator | |
| CN202043034U (en) | Level shift circuit realizing shifting from 5v signal to 3.3v signal for singlechip system | |
| CN205178927U (en) | Stepping motor driving circuit | |
| CN202580242U (en) | Non-contact type faucet control module | |
| CN202634794U (en) | Automobile dimming LED reading lamp | |
| CN106054745A (en) | IIC bus based expansion circuit for realizing digital I/O output | |
| CN203800900U (en) | Low-cost on-chip oscillator | |
| CN204244073U (en) | A kind of controllable direct current power supply circuit | |
| CN204046476U (en) | Simple motor controller | |
| CN203761355U (en) | Triode-control-based ECU power-off time-delay circuit | |
| CN204130145U (en) | A kind of adjusting gear of backlight drive electric current | |
| CN204595839U (en) | Based on the general purpose timer module I P core of APB interface | |
| CN203119906U (en) | Computer universal serial bus (USB) interface infrared transmitter | |
| CN106877850A (en) | A kind of electronic time-delay switch | |
| CN204543564U (en) | A kind of remote control circuit of VTOL model plane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Xinle Road, Haicang District of Xiamen city of Fujian Province, No. 26 361000 Patentee after: AVIC Tech (Xiamen) electric power technology Limited by Share Ltd Patentee after: China Nuclear Power Engineering Co., Ltd. Address before: Xinle Road, Haicang District of Xiamen city of Fujian Province, No. 26 361000 Patentee before: AVIC Tech (Xiamen) Electronics Co., Ltd. Patentee before: China Nuclear Power Engineering Co., Ltd. |