CN217216741U

CN217216741U - Drive circuit of precision diameter measuring system based on CCD sensor

Info

Publication number: CN217216741U
Application number: CN202220807580.5U
Authority: CN
Inventors: 解海滨; 张子吟; 刘燕坡
Original assignee: Xingtai Weida Technology Co ltd; Xingtai Polytechnic College
Current assignee: Xingtai Weida Technology Co ltd; Xingtai Polytechnic College
Priority date: 2022-04-09
Filing date: 2022-04-09
Publication date: 2022-08-16
Anticipated expiration: 2032-04-09

Abstract

The utility model discloses a drive circuit of accurate diameter measurement system based on CCD sensor belongs to CCD drive circuit technical field. The driving circuit comprises a micro control unit and a TCD2901, wherein a main clock CLO and a shift pulse T1O are electrically connected with the input end of an AND gate, the output end of the AND gate is electrically connected with a reset pulse RS and a shift pulse CP, a test pulse T2O is electrically connected with clock pulses phi 1A and phi 2A through an amplifier, a P13 is electrically connected with a storage pulse SH, and signals in the circuit are output from an OS1 port. The utility model discloses the programming of make full use of singlechip is nimble, and the integrated level is high, can reconstruct in a flexible way, portability is good, save advantages such as PCB board space, provides the CCD drive circuit based on the singlechip, can obtain stable drive and control chronogenesis, and the debugging is convenient, nimble, can stably drive the accurate diameter measuring system based on CCD sensor.

Description

Drive circuit of precision diameter measuring system based on CCD sensor

Technical Field

The utility model relates to a CCD drive circuit technical field specifically is a drive circuit of accurate diameter measuring system based on CCD sensor.

Background

The precise diameter measurement has wide application in the industries of cables, sealing strips, machining and the like, and plays a key role in improving the product quality and implementing automatic control of production. At present, there are two ways of contactless precision diameter measurement, one is a laser test mode, and the other is a CCD linear array photoelectric sensor test. The laser testing device needs to project a laser beam onto a rotating polygon mirror, and the reflected light scans the measuring range and then reaches a receiving element. To increase speed and accuracy, the motor must rotate at a faster speed, which places certain demands on durability and reliability. The combination of a motorless structure and a long-life light source ensures excellent durability, and the CCD which keeps reliable operation for a long time solves the problem of the durability of the motor, which is always the weakness of a laser scanning mode. Moreover, the long-life LED achieves long-term continuous reliability, and the continuous exposure measurement of the CCD can carry out high-speed sampling, so that the conventional speed and the precision are doubled.

A Charge Coupled Device (CCD) is a new type of semiconductor device that converts light signals into electrical signals well by means of electric charges to realize photoelectric conversion. The method has the advantages of high precision, good resolution, low power consumption and the like, and is widely applied to the field of imaging.

The diameter measuring instrument selects a TCD2901D color linear array CCD device which has the characteristics of high sensitivity and low noise. However, the driving timing sequence of the color linear array CCD is relatively complex, and the key for driving the high-speed CCD is to obtain stable driving and control timing sequences, in the prior art, the driving circuit of the CCD is implemented by using traditional digital circuit chips such as EPROM, IC, etc., but the driving method has the disadvantages of difficult debugging, inflexibility, large area of the driving circuit, etc.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a drive circuit of accurate diameter measuring system based on CCD sensor.

The utility model discloses a realize through following technical scheme:

a drive circuit of a precision diameter measuring system based on a CCD sensor comprises a micro control unit and a TCD2901, wherein the micro control unit comprises a main clock CLO, a shift pulse T1O and test pulses T2O and P13, the TCD2901 comprises a reset pulse RS, a shift pulse CP, a storage pulse SH, clock pulses phi 1A and phi 2A, the main clock CLO and the shift pulse T1O are electrically connected with the input end of an AND gate, the output end of the AND gate is electrically connected with the reset pulse RS and the shift pulse CP, the test pulse T2O is electrically connected with the clock pulses phi 1A and phi 2A through an amplifier, the P13 is electrically connected with the storage pulse SH, and signals in the circuit are output from an OS1 port.

The pulse in the TCD2901 measured 10550 × 4 μm in width.

The driving circuit comprises two AND gates, the main clock CLO is electrically connected with the input end of one of the AND gates, and the shift pulse T1O is respectively electrically connected with the two AND gates.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses the programming of make full use of singlechip is nimble, and the integrated level is high, can reconstruct in a flexible way, portability is good, save advantages such as PCB board space, provides the CCD drive circuit based on the singlechip, can obtain stable drive and control chronogenesis, and the debugging is convenient, nimble, can stably drive the accurate diameter measuring system based on CCD sensor.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a timing diagram of TCD 2901.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in the attached figures 1 and 2 of the specification, the driving circuit of the precision diameter measuring system based on the CCD sensor comprises a micro control unit and a TCD2901, wherein the micro control unit comprises a main clock CLO, a shift pulse T1O, test pulses T2O and P13, the TCD2901 comprises a reset pulse RS, a shift pulse CP, a storage pulse SH and clock pulses phi 1A and phi 2A, the main clock CLO and the shift pulse T1O are electrically connected with the input end of an AND gate, the output end of the AND gate is electrically connected with the reset pulse RS and the shift pulse CP, the test pulse T2O is electrically connected with the clock pulses phi 1A and phi 2A through an amplifier, the P13 is electrically connected with the storage pulse SH, and signals in the circuit are output from an OS1 port.

The pulse in the TCD2901 measured 10550 × 4 μm in width.

Example 1

A drive circuit of a precision diameter measuring system based on a CCD sensor comprises a micro control unit and a TCD2901, wherein the micro control unit comprises a main clock CLO, a shift pulse T1O, a test pulse T2O and a P13, wherein P13 is a three-pin switch, the TCD2901 comprises five timing pulses such as a reset pulse RS, a shift pulse CP, a storage pulse SH and clock pulses phi 1A and phi 2A, the pulse test width is 10550 x 4 mu m, the drive circuit comprises two AND gates, the main clock CLO is electrically connected with the input end of one of the two AND gates, the shift pulse T1O is respectively electrically connected with the two AND gates, the output end of the AND gate is electrically connected with the reset pulse RS and the shift pulse CP, the test pulse T2O is electrically connected with the clock pulses phi 1A and phi 2A through an amplifier, the P13 is electrically connected with the storage pulse SH, and signals in the circuit are output from an OS1 port.

In the embodiment, a design scheme of a driving time sequence and a circuit is provided, a stable driving and control time sequence can be obtained, the debugging is convenient and flexible, the requirements of the color CCD can be well met, a foundation is laid for application in measurement systems and the like in the future, and the design of the driving circuit also has a certain reference value for the design of other color linear array CCDs in the future.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a drive circuit of accurate diameter-measuring system based on CCD sensor which characterized in that: the driving circuit comprises a micro-control unit and a TCD2901, wherein the micro-control unit comprises a main clock CLO, a shift pulse T1O, test pulses T2O and P13, the TCD2901 comprises a reset pulse RS, a shift pulse CP, a storage pulse SH and clock pulses phi 1A and phi 2A, the main clock CLO and the shift pulse T1O are electrically connected with the input end of an AND gate, the output end of the AND gate is electrically connected with the reset pulse RS and the shift pulse CP, the test pulse T2O is electrically connected with the clock pulses phi 1A and phi 2A through an amplifier, the P13 is electrically connected with the storage pulse SH, and signals in the circuit are output from an OS1 port.

2. The drive circuit of the precision diameter measuring system based on the CCD sensor is characterized in that: the pulse in the TCD2901 measured 10550 × 4 μm in width.

3. The drive circuit of the precision diameter measuring system based on the CCD sensor is characterized in that: the driving circuit comprises two AND gates, the main clock CLO is electrically connected with the input end of one of the AND gates, and the shift pulse T1O is respectively electrically connected with the two AND gates.