CN209002053U - A kind of scanning module and electronic equipment - Google Patents

Abstract

The utility model relates to a kind of scanning module and electronic equipments, a kind of scanning module of the utility model includes governor circuit, the cmos image sensor connecting with governor circuit, lighting circuit and aims at illuminating circuit, and is connect with cmos image sensor, for providing the active oscillator circuitry of work clock for cmos image sensor.It is simple to implement the utility model circuit, it is at low cost.

Description

A kind of scanning module and electronic equipment

Technical field

The utility model relates to scanning circuit technical fields, more specifically to a kind of scanning module and electronic equipment.

Background technique

In the scanning circuit design of transmission, generally requiring built-in MCU by the signal that frequency dividing generates 24MHz frequency is Cmos image sensor provides work clock source, and needs the scanning illumination and optical laying in MCU control scanning process, example Driving is shone to drive lighting circuit and optical laying circuit by MCU connection as shown in Figure 3, needs individually to carry out MCU to set It sets while MCU being needed to carry out the work clock that software setting generates the cmos image sensor needed, complex circuit improves The cost of entire circuit design.

Utility model content

The technical problem to be solved by the present invention is to provide one for the above-mentioned portion of techniques defect of the prior art Kind scanning module and electronic equipment.

The technical scheme adopted by the utility model to solve the technical problem is as follows: constructing a kind of scanning module, including master control Circuit, the cmos image sensor being connect with the governor circuit, lighting circuit and aim at illuminating circuit, and with the CMOS Imaging sensor connects, for providing the active oscillator circuitry of work clock for the cmos image sensor.

Preferably, the governor circuit is master cpu, the first GPIO mouthfuls of companies of the lighting circuit and the master cpu Connect, it is described aim at illuminating circuit and the master cpu the 2nd GPIO mouthfuls connect.

Preferably, the aiming illuminating circuit includes Light-emitting diode LED 1 and metal-oxide-semiconductor Q1, the Light-emitting diode LED 1 Anode the first power supply VCC_3V3 of connection, the cathode of the Light-emitting diode LED 1 connects the third pin of the metal-oxide-semiconductor Q1, The first pin of the metal-oxide-semiconductor Q1 connects the governor circuit, the first pin ground connection of the metal-oxide-semiconductor Q1.

Preferably, the lighting circuit includes Light-emitting diode LED 2 and metal-oxide-semiconductor Q2, and the Light-emitting diode LED 2 is just Pole connects the first power supply VCC_3V3, and the cathode of the Light-emitting diode LED 2 connects the third pin of the metal-oxide-semiconductor Q2, The first pin of the metal-oxide-semiconductor Q2 connects the governor circuit, the first pin ground connection of the metal-oxide-semiconductor Q2.

Preferably, the active oscillator circuitry includes oscillator Y1, and the third of the oscillator Y1 is (described in pin connection Cmos image sensor, the first pin of the oscillator Y1 and the 4th pin connect second source SENSOR_IO, the oscillation The second pin of device Y1 is grounded.

In addition, the utility model also constructs a kind of electronic equipment, including scanning module described in any of the above one.

Preferably, the governor circuit in the scanning module is the electronic equipment for controlling the electronic device works CPU。

Preferably, the electronic equipment includes handheld terminal.

Preferably, the handheld terminal includes PDA.

Preferably, the governor circuit is PDACPU.

A kind of scanning module and electronic equipment for implementing the utility model, have the advantages that circuit is simple, cost It is low.

Detailed description of the invention

Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:

Fig. 1 is a kind of circuit diagram of scanning module first embodiment of the utility model；

Fig. 2 is a kind of circuit diagram of scanning module first embodiment of the utility model；

Fig. 3 is the circuit diagram of existing PDA probe.

Specific embodiment

For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed Illustrate specific embodiment of the present utility model.

As shown in Figure 1, in a kind of scanning module first embodiment of the utility model, including governor circuit 50 and master Cmos image sensor 10, lighting circuit 30 and aiming illuminating circuit 40 that circuit 50 connects are controlled, and is sensed with cmos image Device 10 connects, for providing the active oscillator circuitry 20 of work clock for cmos image sensor 10.Specifically, by with CMOS The active oscillator circuitry 20 that imaging sensor 10 is directly connected to generates the oscillator signal of 24MHz, mentions for cmos image sensor 10 For work clock, that eliminates need to generate 10 work clock of cmos image sensor, circuit letter by MCU software programming It is single, while passing through the scanning illumination of lighting circuit 30 when governor circuit 50 directly controls scanning respectively and aiming at illuminating circuit 40 Scan optical laying, without by MCU to the secondary interpretation of the signal of governor circuit 50, come controlled by MCU illumination and Optical laying is scanned, step is simpler.

Further, as shown in Fig. 2, governor circuit 50 is master cpu, the first GPIO of lighting circuit 30 and master cpu Mouthful connection, aim at illuminating circuit 40 and master cpu the 2nd GPIO mouthfuls connect.Specifically, governor circuit 50 is master cpu, lead to The GPIO mouth for crossing master cpu is connect with lighting circuit 30 and aiming illuminating circuit 40 respectively, directly controls illumination by master cpu Circuit 30 and aiming illuminating circuit 40, make full use of the GPIO interface of master cpu to realize that in some cases, CPU is usual here GPIO mouth be not fully utilized scene when, save controller resource.

Further, aiming at illuminating circuit 40 includes Light-emitting diode LED 1 and metal-oxide-semiconductor Q1, and Light-emitting diode LED 1 is just The first power supply VCC_3V3 of pole connection, the third pin of the cathode connection metal-oxide-semiconductor Q1 of Light-emitting diode LED 1, the first of metal-oxide-semiconductor Q1 Pin connects governor circuit 50, the first pin ground connection of metal-oxide-semiconductor Q1.Specifically, controlling leading for metal-oxide-semiconductor Q1 by governor circuit 50 Logical and shutdown aims at Light-emitting diode LED 1 to control the turn-on and turn-off for aiming at Light-emitting diode LED 1 when controlling scanning Work.

Further, lighting circuit 30 includes Light-emitting diode LED 2 and metal-oxide-semiconductor Q2, and the anode of Light-emitting diode LED 2 is even Connect the first power supply VCC_3V3, the third pin of the cathode connection metal-oxide-semiconductor Q2 of Light-emitting diode LED 2, the first pin of metal-oxide-semiconductor Q2 Connect governor circuit 50, the first pin ground connection of metal-oxide-semiconductor Q2.Specifically, by governor circuit 50 control metal-oxide-semiconductor Q2 conducting and It turns off to control the turn-on and turn-off of illumination light-emitting diode LED2, the work of illumination light-emitting diode LED2 when controlling scanning Make.

Further, active oscillator circuitry 20 includes oscillator Y1, and the third pin connection cmos image of oscillator Y1 passes Sensor 10, the first pin of oscillator Y1 and the 4th pin connect second source SENSOR_IO, and the second pin of oscillator Y1 connects Ground.Specifically, give oscillator Y1 power supply by second source SENSOR_IO, the of second source SENSOR_IO and oscillator Y1 Four pins, that is, power input pin connection, while being connect with the first pin of oscillator Y1, that is, enable pin, the of oscillator Y1 Three-prong, that is, clock output pin connects cmos image sensor, when second source SENSOR_IO conducting, while powering and making Energy oscillator Y1, the work clock that oscillator Y1 generates 24MHz are supplied to cmos image sensor by clock output pin 10 so that cmos image sensor 10 works.Here the model of oscillator Y1 can use HSO321S.

In addition, a kind of electronic equipment of the utility model, including any of the above one scanning module.Further, it scans Governor circuit 50 in mould group is the electronic equipment CPU to work for controlling electronic devices.Both it is to be understood that electronic equipment its It needs CPU to carry out controlling electronic devices when work to be worked normally, it, can be with when electronic equipment is when being configured with the scanning module It is the same circuit by the CPU that the governor circuit 50 of scanning module is set as electronic equipment, saving electronics may be implemented in this way and set The purpose of standby internal circuit resource.

Further, electronic equipment includes handheld terminal.Such as mobile phone, computer etc., handheld terminal may include herein PDA.When handheld terminal is PDA, wherein the governor circuit 50 of scanning module is PDA CPU.Here PDA CPU can lead to The reset signal for dragging down cmos image sensor 10 is crossed, COMS imaging sensor is resetted, I2C pairs of PDA cpu access Cmos image sensor 10 carries out parameter setting and initialization, and the image information that cmos image sensor 10 scans passes through MIPI_ DATA and MIPI_CLK interface is transferred to PDA CPU and carries out image decoding.

It should be understood that above embodiments only express preferred embodiments of the present invention, describe more specific With it is detailed, but it should not be understood as limiting the scope of the patent of the utility model；It should be pointed out that for this field Those of ordinary skill for, without departing from the concept of the premise utility, can to above-mentioned technical characterstic carry out freely Combination, various modifications and improvements can be made, and these are all within the protection scope of the present invention；Therefore, all practical with this The equivalents and modification that novel scope of the claims is done, should belong to the covering scope of the utility model claims.

Claims (10)

1. a kind of scanning module, which is characterized in that sensed including governor circuit, the cmos image being connect with the governor circuit Device, lighting circuit and aiming illuminating circuit, and connecting, be used for the cmos image sensor is that the cmos image senses The active oscillator circuitry of device offer work clock.

2. scanning module according to claim 1, which is characterized in that the governor circuit is master cpu, the power for illumination Road and the master cpu the first GPIO mouthfuls connect, the 2nd GPIO mouthfuls of companies for aiming at illuminating circuit and the master cpu It connects.

3. scanning module according to claim 1, which is characterized in that the aiming illuminating circuit includes light emitting diode LED1 and metal-oxide-semiconductor Q1, anode the first power supply VCC_3V3 of connection of the Light-emitting diode LED 1, the Light-emitting diode LED 1 Cathode connect the third pin of the metal-oxide-semiconductor Q1, the first pin of the metal-oxide-semiconductor Q1 connects the governor circuit, the MOS The first pin of pipe Q1 is grounded.

4. scanning module according to claim 3, which is characterized in that the lighting circuit includes 2 He of Light-emitting diode LED The anode of metal-oxide-semiconductor Q2, the Light-emitting diode LED 2 connect the first power supply VCC_3V3, the Light-emitting diode LED 2 Cathode connects the third pin of the metal-oxide-semiconductor Q2, and the first pin of the metal-oxide-semiconductor Q2 connects the governor circuit, the metal-oxide-semiconductor The first pin of Q2 is grounded.

5. scanning module according to claim 1, which is characterized in that the active oscillator circuitry includes oscillator Y1, institute The third pin for stating oscillator Y1 connects the cmos image sensor, and the first pin of the oscillator Y1 and the 4th pin connect Connect second source SENSOR_IO, the second pin ground connection of the oscillator Y1.

6. a kind of electronic equipment, which is characterized in that including scanning module described in claim 1-5 any one.

7. electronic equipment according to claim 6, which is characterized in that the governor circuit in the scanning module is for controlling Make the electronic equipment CPU of the electronic device works.

8. electronic equipment according to claim 6, which is characterized in that the electronic equipment includes handheld terminal.

9. electronic equipment according to claim 8, which is characterized in that the handheld terminal includes PDA.

10. electronic equipment according to claim 8, which is characterized in that the governor circuit is PDA CPU.