CN203209832U - Reference and pulse control circuit based on PWM waves of single chip microcomputer - Google Patents
Reference and pulse control circuit based on PWM waves of single chip microcomputer Download PDFInfo
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- CN203209832U CN203209832U CN 201320187362 CN201320187362U CN203209832U CN 203209832 U CN203209832 U CN 203209832U CN 201320187362 CN201320187362 CN 201320187362 CN 201320187362 U CN201320187362 U CN 201320187362U CN 203209832 U CN203209832 U CN 203209832U
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- chip microcomputer
- pulse
- control circuit
- single chip
- pulse control
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Abstract
The utility model discloses a reference and pulse control circuit based on PWM waves of a single chip microcomputer. The reference and pulse control circuit comprises the single chip microcomputer and an analog multiway switch. A PWM1 pulse and basic value level signal interface and a PWM2 pulse and basic value level signal interface of the single chip microcomputer are connected with two interfaces of the analog multiway switch through following filter circuit respectively. A PWM3 pulse signal interface is further arranged on the single chip microcomputer and connected with the corresponding interface of the analog multiway switch. Compared with the prior art, the reference and pulse control circuit based on the PWM waves of the single chip microcomputer overcomes the defects, and has the advantages of being simple in production process, high in accuracy and low in cost. The advantages of the reference and pulse control circuit are not possessed by multiple welding machines in the prior art.
Description
Technical field
The utility model belongs to a kind of control circuit, is specifically related to a kind of benchmark based on the SCM PWM ripple and pulse control circuit.
Background technology
At present, the benchmark of electric welding machine welding current still is that pattern plan potentiometer is regulated mostly, and this potentiometer is exclusively used in the adjusting current value, and the resistance of the potentiometer of the machine demand of different size of current is also different; The welding machine of tape pulse also needs two potentiometers to regulate, and regulates base value for one, regulates peak value for one.Too much potentiometer can allow display floater become complicated, and it is just more in disorder that line looks more, and corresponding cost also can increase, and precision is also not high.Also some teaching machine device is to realize the benchmark adjusting by the D/A chip at present, though precision has improved, cost does not still reduce.Pulse and dutycycle then be by 555 circuit, realizes by capacitor charge and discharge, has the problem of cost and precision equally.
The utility model content
The purpose of utility model: for addressing the above problem, the utility model provides a kind of precision height, benchmark and pulse control circuit based on the SCM PWM ripple that cost is low.
Technical scheme: in order to achieve the above object, the utility model is by the following technical solutions:
A kind of benchmark and pulse control circuit based on the SCM PWM ripple, described circuit comprises single-chip microcomputer and analog multichannel switch, described single-chip microcomputer two-way PWM1, PWM2 pulse and base value level signal interface are connected with two interfaces of analog multichannel switch by following filter circuit respectively, also are provided with PWM3 pulse signal interface on the described single-chip microcomputer and are connected with the corresponding interface of analog multichannel switch.
Beneficial effect: compared with prior art, the utility model has improved above-mentioned deficiency, and circuit and production technology are simple, the precision height, and cost is low.This is that at present a lot of welding machines are not available.
Description of drawings
Fig. 1 is circuit principle structure block diagram of the present utility model.
The specific embodiment
As shown in Figure 1 a kind of benchmark and pulse control circuit based on the SCM PWM ripple, described circuit comprises single-chip microcomputer and analog multichannel switch, described single-chip microcomputer two-way PWM1, PWM2 pulse and base value level signal interface are connected with two interfaces of analog multichannel switch by following filter circuit respectively, also are provided with PWM3 pulse signal interface on the described single-chip microcomputer and are connected with the corresponding interface of analog multichannel switch.
Operation principle: the utility model is realized two-way control benchmark (background current and pulse current) and the pulse value (frequency and dutycycle) of electric welding machine by three road PWM modulation signals of single-chip microcomputer.Wherein PWM1 and PWM2 are the two-way PWM modulation signals of single-chip microcomputer, obtain level as reference level by following with filtering, recently realize the adjusting of (pulse and base value) benchmark by regulating the PWM1 duty different with PWM2.Pulse is that the PWM3 control 4053 by single-chip microcomputer realizes that frequency and dutycycle all recently realize by frequency and the duty of regulating PWM3.Like this, this utility model has just realized benchmark and pulse function.
Claims (1)
1. benchmark and pulse control circuit based on a SCM PWM ripple, it is characterized in that: described circuit comprises single-chip microcomputer and analog multichannel switch, described single-chip microcomputer two-way PWM1, PWM2 pulse and base value level signal interface are connected with two interfaces of analog multichannel switch by following filter circuit respectively, also are provided with PWM3 pulse signal interface on the described single-chip microcomputer and are connected with the corresponding interface of analog multichannel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187362 CN203209832U (en) | 2013-04-15 | 2013-04-15 | Reference and pulse control circuit based on PWM waves of single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187362 CN203209832U (en) | 2013-04-15 | 2013-04-15 | Reference and pulse control circuit based on PWM waves of single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203209832U true CN203209832U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320187362 Expired - Lifetime CN203209832U (en) | 2013-04-15 | 2013-04-15 | Reference and pulse control circuit based on PWM waves of single chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203209832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911921A (en) * | 2016-06-16 | 2016-08-31 | 西安科技大学 | Multipath steering engine control method based on 52-series single-chip microcomputer |
-
2013
- 2013-04-15 CN CN 201320187362 patent/CN203209832U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911921A (en) * | 2016-06-16 | 2016-08-31 | 西安科技大学 | Multipath steering engine control method based on 52-series single-chip microcomputer |
| CN105911921B (en) * | 2016-06-16 | 2019-03-05 | 西安科技大学 | A kind of multichannel steering engine control method based on 52 series monolithics |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |