CN212063876U - Positioning circuit for C3200 camera - Google Patents

Abstract

The utility model belongs to the technical field of industrial camera, in particular to a positioning circuit for C3200 type camera, including first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, all be equipped with first input and first output on first infrared induction module, second infrared induction module and the third infrared induction module, be equipped with a plurality of second input and a plurality of second output on the main control unit, first input is connected with a plurality of second output, first output is connected with a plurality of second input, still be equipped with first motor input and second motor input on the main control unit, be equipped with first motor output and second motor output on the motor control chip; through setting up first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, be favorable to improving the control accuracy of electronic positioning.

Description

Positioning circuit for C3200 camera

Technical Field

The utility model belongs to the technical field of the industry camera, in particular to a positioning circuit for C3200 type camera.

Background

Industrial cameras, also known as video cameras, have high image stability, high transmission capability, high anti-interference capability, and the like, compared to conventional civil cameras (video cameras), and most of the commercial industrial cameras are cameras based on ccd (charge Coupled device) or cmos (complementary Metal Oxide semiconductor) chips.

The majority of the existing industrial cameras adopt an electronic positioning technology, and the electronic positioning is as follows: when the motor drives the rotating wheel to rotate (the rest positions of the rotating wheel are black, and the corresponding positions of the positioning points of the rotating wheel are through holes), the circuit board is positioned by the three infrared sensors, when light emitted by the infrared sensors reaches the positions of the through holes on the rotating wheel, the light is reflected by the positions of the through holes, the black of the rest positions is absorbed light, a feedback signal for the circuit board is changed, and the circuit board controls the stepping motor to stop rotating and reach a specified position; the existing electronic positioning device has the problem of inaccurate control.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problems in the prior art, the present invention provides a positioning circuit for C3200 type camera, which can control accurately.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

a positioning circuit for C3200 camera comprises a first infrared sensing module, a second infrared sensing module, a third infrared sensing module, a main controller and a motor control chip, the first infrared induction module, the second infrared induction module and the third infrared induction module are all provided with a first input end and a first output end, the main controller is provided with a plurality of second input ends and a plurality of second output ends, the first input end is connected with the plurality of second output ends, the first output end is connected with a plurality of second input ends, the main controller is also provided with a first motor input end and a second motor input end, the motor control chip is provided with a first motor output end and a second motor output end, the first motor input end is connected with the first motor output end, and the second motor input end is connected with the second motor output end.

In the positioning circuit for the C3200 type camera, the first infrared sensing module, the second infrared sensing module and the third infrared sensing module are respectively provided with a first test point, a first resistor, a second resistor, a first capacitor, a first power supply, a first MOS transistor, a third resistor, a fourth resistor, a first magnetic bead, a second capacitor, a first sensor, a fifth resistor, a sixth resistor, a seventh resistor and a third capacitor; one end of the first resistor and one end of the first test point are both connected with a first input end, one end of the second resistor and one end of the first MOS tube are both connected with the other end of the first resistor, the other ends of the second resistor and the first MOS tube are both connected with one end of the first capacitor, the other end of the first capacitor is grounded, the first power supply is respectively connected with the first capacitor, the second resistor and the first MOS tube, one ends of the third resistor, the fourth resistor and the first magnetic bead are all connected with the other end of the first MOS tube, the other end of the first magnetic bead is connected with the first power supply, the other ends of the third resistor and the fourth resistor are connected with one end of the second capacitor, the other end of the second capacitor is grounded, AN (AN) pin on the first sensor is connected with the other end of the fourth resistor, one ends of the fifth resistor and the sixth resistor are connected with the first power supply, and the other ends of the fifth resistor and the sixth resistor are connected with one end of a seventh resistor, the other ends of the third capacitor and the seventh resistor are grounded, and a CO pin of the first sensor is connected with the other end of the sixth resistor.

In the above positioning circuit for a C3200-type camera, the plurality of second input terminals include a fifteenth pin, a fourteenth pin and a sixteenth pin, the plurality of second output terminals include a thirteenth pin, a twelfth pin and a seventeenth pin, the fifteenth pin is connected to the first input terminal of the first infrared sensing module, the fourteenth pin is connected to the first input terminal of the second infrared sensing module, the sixteenth pin is connected to the first input terminal of the third infrared sensing module, the thirteenth pin is connected to the first output terminal of the first infrared sensing module, the twelfth pin is connected to the first output terminal of the second infrared sensing module, and the seventeenth pin is connected to the first output terminal of the third infrared sensing module.

In the foretell positioning circuit for C3200 type camera, still include step motor, the last first motor input of main control unit is the tenth pin, the last second motor input of main control unit is the forty-fifth pin, first motor output is the nineteenth pin on the motor control chip, the last second motor output of motor control chip is the third pin, the tenth pin is connected with the nineteenth pin, the third pin is connected with the forty-fifth pin, still be equipped with fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin on the motor control chip, fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin all are connected with step motor.

In the above-mentioned positioning circuit for the C3200 type camera, the positioning circuit further comprises a buzzer circuit module, wherein a twenty-ninth pin is arranged on the main controller, and the buzzer circuit module is connected with the twenty-ninth pin.

The positioning circuit for the C3200 camera further comprises a thermistor, an eleventh pin of the main controller is further arranged on the main controller, and the thermistor is connected with the eleventh pin of the main controller.

In the above positioning circuit for the C3200 type camera, the main controller uses an STM32F103CBT6 chip.

In the above positioning circuit for the C3200 type camera, the motor control chip is an a3980 chip.

In the above positioning circuit for the C3200 type camera, the first sensor is an infrared sensor SFH 9201.

In the above positioning circuit for the C3200 type camera, the first MOS transistor is of an SI2333 type.

(III) advantageous effects

The utility model has the advantages that: through setting up first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, be favorable to improving the control accuracy of electronic positioning.

Drawings

Fig. 1 is a schematic structural diagram of a first infrared sensing module of a positioning circuit for a C3200 camera according to the present invention;

fig. 2 is a schematic structural diagram of a second infrared sensing module of the positioning circuit for a C3200 camera according to the present invention;

fig. 3 is a schematic structural diagram of a third infrared sensing module of the positioning circuit for a C3200 camera according to the present invention;

fig. 4 is a schematic structural diagram of a main controller of the positioning circuit for the C3200 camera according to the present invention;

fig. 5 is a schematic structural diagram of a motor control chip of the positioning circuit for a C3200 camera according to the present invention;

fig. 6 is a schematic structural diagram of a buzzer circuit module of a positioning circuit for a C3200 camera according to the present invention;

fig. 7 is a schematic circuit diagram of the thermistor of the positioning circuit for the C3200 camera according to the present invention;

fig. 8 is a schematic circuit diagram of the fan of the positioning circuit for the C3200 camera according to the present invention.

[ description of reference ]

1: a first infrared sensing module;

2: a second infrared sensing module;

3: a third infrared sensing module;

4: a main controller;

5: a motor control chip;

6: a first input terminal;

7: a first output terminal;

8: a plurality of second input terminals;

9: a plurality of second output terminals;

10: a first motor input;

11: a second motor input;

12: a first motor output;

13: a second motor output;

14: a first test point;

15: a first resistor;

16: a second resistor;

17: a first capacitor;

18: a first power supply;

19: a first MOS transistor;

20: a third resistor;

21: a fourth resistor;

22: a first magnetic bead;

23: a second capacitor;

24: a first sensor;

25: a fifth resistor;

26: a sixth resistor;

27: a seventh resistor;

28: a third capacitor;

29: a fifteenth pin;

30: a fourteenth pin;

31: a sixteenth pin;

32: a thirteenth pin;

33: a twelfth pin;

34: a seventeenth pin;

35: a tenth pin;

36: a forty-fifth pin;

37: a nineteenth pin;

38: a third pin;

39: a fourth pin;

40: an eleventh pin;

41: an eighteenth pin;

42: a twenty-fifth pin;

43: a buzzer circuit module;

44: a twenty-ninth pin;

45: a thermistor;

46: an eleventh pin of the host controller;

47: a fan circuit.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

The utility model discloses the most crucial design lies in: through setting up first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip.

Referring to fig. 1 to 8, a positioning circuit for a C3200 camera,

including first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, all be equipped with first input and first output on first infrared induction module, second infrared induction module and the third infrared induction module, be equipped with a plurality of second inputs and a plurality of second output on the main control unit, first input is connected with a plurality of second outputs, first output is connected with a plurality of second inputs, still be equipped with first motor input and second motor input on the main control unit, be equipped with first motor output and second motor output on the motor control chip, first motor input is connected with first motor output, second motor input is connected with second motor output.

A theory of operation for C3200 type camera's positioning circuit: when the first sensor in first infrared induction module, second infrared induction module and the third infrared induction module passes through the through-hole at the runner back, the luminous intensity of receiving the reflection back is different, first sensor will give main control unit with signal transmission, main control unit will change light signal into the signal of telecommunication, the signal of telecommunication passes to on the thirteenth pin and the fifteenth pin of main control unit, begin to read the size of ADC value, confirm the position according to the size of ADC (digital-to-analog conversion) value, after signal processing, main control unit will feed back the signal to motor control chip, motor control chip drives step motor and begins to rotate again.

From the above description, the beneficial effects of the present invention are: through setting up first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, be favorable to improving the control accuracy of electronic positioning.

Furthermore, a first test point, a first resistor, a second resistor, a first capacitor, a first power supply, a first MOS transistor, a third resistor, a fourth resistor, a first magnetic bead, a second capacitor, a first sensor, a fifth resistor, a sixth resistor, a seventh resistor, and a third capacitor are all arranged on the first infrared sensing module, the second infrared sensing module, and the third infrared sensing module; one end of the first resistor and one end of the first test point are both connected with a first input end, one end of the second resistor and one end of the first MOS tube are both connected with the other end of the first resistor, the other ends of the second resistor and the first MOS tube are both connected with one end of the first capacitor, the other end of the first capacitor is grounded, the first power supply is respectively connected with the first capacitor, the second resistor and the first MOS tube, one ends of the third resistor, the fourth resistor and the first magnetic bead are all connected with the other end of the first MOS tube, the other end of the first magnetic bead is connected with the first power supply, the other ends of the third resistor and the fourth resistor are connected with one end of the second capacitor, the other end of the second capacitor is grounded, AN (AN) pin on the first sensor is connected with the other end of the fourth resistor, one ends of the fifth resistor and the sixth resistor are connected with the first power supply, and the other ends of the fifth resistor and the sixth resistor are connected with one end of a seventh resistor, the other ends of the third capacitor and the seventh resistor are grounded, and a CO pin of the first sensor is connected with the other end of the sixth resistor.

As can be seen from the above description, the first test point, the first resistor, the second resistor, the first capacitor, the first power supply, the first MOS transistor, the third resistor, the fourth resistor, the first magnetic bead, the second capacitor, the first sensor, the fifth resistor, the sixth resistor, the seventh resistor, and the third capacitor are all disposed on the first infrared sensing module, the second infrared sensing module, and the third infrared sensing module; one end of the first resistor and one end of the first test point are both connected with a first input end, one end of the second resistor and one end of the first MOS tube are both connected with the other end of the first resistor, the other ends of the second resistor and the first MOS tube are both connected with one end of the first capacitor, the other end of the first capacitor is grounded, the first power supply is respectively connected with the first capacitor, the second resistor and the first MOS tube, one ends of the third resistor, the fourth resistor and the first magnetic bead are all connected with the other end of the first MOS tube, the other end of the first magnetic bead is connected with the first power supply, the other ends of the third resistor and the fourth resistor are connected with one end of the second capacitor, the other end of the second capacitor is grounded, AN (AN) pin on the first sensor is connected with the other end of the fourth resistor, one ends of the fifth resistor and the sixth resistor are connected with the first power supply, and be connected with the one end of third electric capacity, the other end of fifth resistance and sixth resistance is connected with the one end of seventh resistance, the other end of third electric capacity and the other end ground connection of seventh resistance, the CO pin of first sensor is connected with the other end of sixth resistance, is favorable to infrared induction module circuit structure's stability, reduces high frequency noise and peak interference on the signal line, the maintenance of the user of being convenient for.

Further, the plurality of second input ends include a fifteenth pin, a fourteenth pin and a sixteenth pin, the plurality of second output ends include a thirteenth pin, a twelfth pin and a seventeenth pin, the fifteenth pin is connected to the first input end of the first infrared sensing module, the fourteenth pin is connected to the first input end of the second infrared sensing module, the sixteenth pin is connected to the first input end of the third infrared sensing module, the thirteenth pin is connected to the first output end of the first infrared sensing module, the twelfth pin is connected to the first output end of the second infrared sensing module, and the seventeenth pin is connected to the first output end of the third infrared sensing module.

As can be seen from the above description, the plurality of second input ends include a fifteenth pin, a fourteenth pin and a sixteenth pin, the plurality of second output ends include a thirteenth pin, a twelfth pin and a seventeenth pin, the fifteenth pin is connected to the first input end of the first infrared sensing module, the fourteenth pin is connected to the first input end of the second infrared sensing module, the sixteenth pin is connected to the first input end of the third infrared sensing module, the thirteenth pin is connected to the first output end of the first infrared sensing module, the twelfth pin is connected to the first output end of the second infrared sensing module, and the seventeenth pin is connected to the first output end of the third infrared sensing module, which is beneficial to improving the efficiency of signal transmission.

Further, still include step motor, the last first motor input of main control unit is the tenth pin, the last second motor input of main control unit is the forty-fifth pin, first motor output is the nineteenth pin on the motor control chip, the last second motor output of motor control chip is the third pin, the tenth pin is connected with the nineteenth pin, the third pin is connected with the forty-fifth pin, still be equipped with fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin on the motor control chip, fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin all are connected with step motor.

Known from the above description, through still including step motor, the last first motor input of main control unit is the tenth pin, the last second motor input of main control unit is the forty-fifth pin, first motor output is the nineteenth pin on the motor control chip, the last second motor output of motor control chip is the third pin, the tenth pin is connected with the nineteenth pin, the third pin is connected with the forty-fifth pin, still be equipped with fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin on the motor control chip, fourth pin, eleventh pin, eighteenth pin and twenty-fifth pin all are connected with step motor, are favorable to controlling step motor's operating condition.

Furthermore, the intelligent control system also comprises a buzzer circuit module, wherein a twenty-ninth pin is arranged on the main controller, and the buzzer circuit module is connected with the twenty-ninth pin.

As can be seen from the above description, by further including the buzzer circuit module, the main controller is provided with a twenty-ninth pin, and the buzzer circuit module is connected with the twenty-ninth pin, which is beneficial to improving the safety of the circuit structure.

The intelligent control system is characterized by further comprising a thermistor, wherein an eleventh pin of the main controller is further arranged on the main controller, and the thermistor is connected with the eleventh pin of the main controller.

As can be seen from the above description, the circuit device further includes a thermistor, and the main controller is further provided with an eleventh pin, and the thermistor is connected to the eleventh pin, which is beneficial to improving the heat dissipation performance of the circuit device.

Further, the main controller adopts an STM32F103CBT6 chip.

From the above description, it can be known that the STM32F103CBT6 chip is adopted by the main controller, which is beneficial to improving the control accuracy of the circuit device.

Further, the motor control chip adopts an A3980 chip.

As can be seen from the above description, the a3980 chip is adopted as the motor control chip, which is advantageous for controlling the operating state of the stepping motor.

Further, the first sensor is an infrared sensor SFH 9201.

As can be seen from the above description, the infrared sensor SFH9201 type is adopted by the first sensor, which is beneficial to further improving the positioning accuracy.

Further, the first MOS tube is of an SI2333 type.

As can be seen from the above description, the SI2333 type is adopted for the first MOS transistor, which is advantageous for improving the usability of the switch.

Referring to fig. 1 to 8, a first embodiment of the present invention is:

a positioning circuit for a C3200 type camera comprises a first infrared induction module 1, a second infrared induction module 2, a third infrared induction module 3, a main controller 4 and a motor control chip 5, wherein a first input end 6 and a first output end 7 are respectively arranged on the first infrared induction module 1, the second infrared induction module 2 and the third infrared induction module 3, a plurality of second input ends 8 and a plurality of second output ends 9 are arranged on the main controller 4, the first input end 6 is connected with the plurality of second output ends 9, the first output end 7 is connected with the plurality of second input ends 8, a first motor input end 10 and a second motor input end 11 are also arranged on the main controller 4, a first motor output end 12 and a second motor output end 13 are arranged on the motor control chip 5, the first motor input end 10 is connected with a first motor output end 12, the second motor input 11 is connected to the second motor output 13.

The first infrared sensing module 1, the second infrared sensing module 2 and the third infrared sensing module 3 are respectively provided with a first test point 14, a first resistor 15, a second resistor 16, a first capacitor 17, a first power supply 18, a first MOS (metal oxide semiconductor) tube 19, a third resistor 20, a fourth resistor 21, a first magnetic bead 22, a second capacitor 23, a first sensor 24, a fifth resistor 25, a sixth resistor 26, a seventh resistor 27 and a third capacitor 28; one end of the first resistor 15 and one end of the first test point 14 are both connected to the first input end 6, one end of the second resistor 16 and one end of the first MOS transistor 19 are both connected to the other end of the first resistor 15, the other ends of the second resistor 16 and the first MOS transistor 19 are both connected to one end of the first capacitor 17, the other end of the first capacitor 17 is grounded, the first power supply 18 is respectively connected to the first capacitor 17, the second resistor 16 and the first MOS transistor 19, one ends of the third resistor 20, the fourth resistor 21 and the first magnetic bead 22 are all connected to the other end of the first MOS transistor 19, the other end of the first magnetic bead 22 is connected to the first power supply 18, the other ends of the third resistor 20 and the fourth resistor 21 are connected to one end of the second capacitor 23, the other end of the second capacitor 23 is grounded, AN pin on the first sensor 24 is connected to the other end of the fourth resistor 21, one end of the fifth resistor 25 and one end of the sixth resistor 26 are connected to the first power supply 18 and one end of the third capacitor 28, the other end of the fifth resistor 25 and the other end of the sixth resistor 26 are connected to one end of the seventh resistor 27, the other end of the third capacitor 28 and the other end of the seventh resistor 27 are grounded, and the CO pin of the first sensor 24 is connected to the other end of the sixth resistor 26.

The plurality of second input ends 8 include a fifteenth pin 29, a fourteenth pin 30 and a sixteenth pin 31, the plurality of second output ends 9 include a thirteenth pin 32, a twelfth pin 33 and a seventeenth pin 34, the fifteenth pin 29 is connected to the first input end 6 of the first infrared sensing module 1, the fourteenth pin 30 is connected to the first input end 6 of the second infrared sensing module 2, the sixteenth pin 31 is connected to the first input end 6 of the third infrared sensing module 3, the thirteenth pin 32 is connected to the first output end 7 of the first infrared sensing module 1, the twelfth pin 33 is connected to the first output end 7 of the second infrared sensing module 2, and the seventeenth pin 34 is connected to the first output end 7 of the third infrared sensing module 3.

Still include step motor, first motor input 10 on the main control unit 4 is tenth pin 35, second motor input 11 on the main control unit 4 is forty-fifth pin 36, first motor output 12 is nineteenth pin 37 on the motor control chip 5, second motor output 13 is third pin 38 on the motor control chip 5, tenth pin 35 is connected with nineteenth pin 37, third pin 38 is connected with forty-fifth pin 36, still be equipped with fourth pin 39, eleventh pin 40, eighteenth pin 41 and twenty-fifth pin 42 on the motor control chip 5, fourth pin 39, eleventh pin 40, eighteenth pin 41 and twenty-fifth pin 42 all are connected with step motor.

Still include buzzer circuit module 43, be equipped with twenty-ninth pin 44 on the main control unit 4, buzzer circuit module 43 is connected with twenty-ninth pin 44, still include thermistor 45, still be equipped with the eleventh pin 46 of main control unit on the main control unit 4, thermistor 45 is connected with the eleventh pin 46 of main control unit, main control unit 4 adopts STM32F103CBT6 chip, motor control chip 5 adopts the A3980 chip, first sensor 24 adopts infrared sensor SFH9201 type, first MOS pipe 19 adopts SI2333 type.

The first sensor 24 is an infrared sensor SFH9201 type, which can convert the intensity of light into the change of an electric signal, so that when the first sensor 24 passes through the through hole on the back surface of the rotating wheel, the intensity of the light reflected back is different, and at this time, a signal is sent to the main controller 4, and the main controller 4 performs the next action.

The CO pin of the first sensor 24 is connected to SEN1_ VIN corresponding to the reference numeral in fig. 1, when the first sensor 24 passes through the through hole, the main controller 4 reads the ADC value, determines the position according to the ADC value, and completes the detection; AN pin of the first sensor 24 is connected with VCC _ SEN1 corresponding to a reference numeral in fig. 1, AN S12333 type MOS transistor is adopted as the first MOS transistor 19, the first MOS transistor 19 is used as a switch, when the CO pin of the first sensor 24 detects, the AN pin sends a signal, whether a required position is reached currently is determined according to information fed back from different positions, if the required position is reached, the motor is controlled to stop rotating, and if the required position is not reached, the motor continues rotating.

The wiring mode in fig. 2 and fig. 3 is consistent with that in fig. 1, TP8 in fig. 1, fig. 2, and fig. 3 can be understood as TestPoint (test point), the test point is used to detect whether a component is correct, whether a circuit has a short circuit or an open circuit, and is convenient to debug, the first magnetic bead 22 can be used to suppress high-frequency noise and spike interference on a power line and a signal line, A3V3 in the drawing is a power supply, GND is ground, an R element is a resistor, a C element is a capacitor, and after receiving a signal sent by the first sensor 24, the main controller 4 controls the stepping motor not to rotate through a code, stops the stepping motor, and reaches a designated position.

Assuming that when the first sensor 24 receives the external reflected light change, the signal is converted from the optical signal into an electrical signal, and the electrical signal is transmitted to the thirteenth pin 32 and the fifteenth pin 29 of the main controller 4, the ADC value is read, and the position is determined according to the ADC value; similarly, the signals sent by the other two infrared sensing modules are respectively transmitted to the twelfth pin 33 and the fourteenth pin 30, the sixteenth pin 31 and the seventeenth pin 34 of the main controller 4 (ADC-digital-to-analog conversion).

When a required position is selected, the tenth pin 35 of the main controller 4 is connected with the nineteenth pin 37 of the motor control chip 5, the nineteenth pin 37 on the motor control chip 5 is a pulse input end, and the number of steps that the motor can go is determined according to the pulse size, then the stepping motor is connected with the OUT1A, the OUT2A, the OUT1B and the OUT2B (namely, the fourth pin 39, the eleventh pin 40, the eighteenth pin 41 and the twenty-fifth pin 42 of the motor control chip 5), and the motor rotates.

The third pin 38 of the motor control chip 5 is connected to the forty-fifth pin 36 of the main controller 4 to control the rotation direction of the motor, and the MS1 and MS2 are control terminals of the stepping direction of the stepping motor, and when the values of the two pins are 00, 01, 10 and 11, respectively, the steps of the stepping motor are controlled to be 1, 2, 1/8 and 1/16, respectively.

The circuit structure of the buzzer circuit module 43 is as shown in fig. 6, the buzzer is set in three states, and when the buzzer sounds for a long time (turn on for 3s and turn off for 1s), the DC power supply voltage of the camera is abnormal; when the buzzer sounds short (on 1s off 1s), the camera internal temperature is too high, for internal electronics, the maximum recommended operating temperature has been exceeded by 40 ℃; when the buzzer repeats (on 1s off 1s, on 3s off 1s cycle) for a long time and a short time, the filter fails and stops running, the camera can still operate, but the filter wheel is not rotating, the filter wheel may be in any position, the camera power must be turned off, and the filter wheel is restarted, the twenty-ninth pin 44 of the main controller 4 is connected with an external circuit to control the state of the buzzer.

The circuit structure of the thermistor 45 is shown in fig. 7, in which R34 and R35 are NTC resistors (thermistor 45) in which the resistance value decreases with increasing temperature; the NTC _ VIN terminal is connected to the eleventh pin 46 of the main controller 4, the ADC is read to estimate the temperature, if the read temperature is higher than the set temperature, the twenty-first pin (FAN _ EN) of the main controller 4 is connected to the FAN circuit 47 of fig. 8, and finally the terminal VCC _ FAN connected to 2pin is connected to the FAN, so as to achieve the purpose of heat dissipation.

In the figure, the number 56K/0603/1% is explained, 56K is the resistance value of the resistor, 0603 is the name of the resistor package, and 1% is the precision error of the resistor.

To sum up, the utility model provides a pair of a positioning circuit for C3200 type camera through setting up first infrared induction module, second infrared induction module, third infrared induction module, main control unit and motor control chip, is favorable to improving the control accuracy of electron location.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims (10)

1. A positioning circuit for C3200 camera is characterized by comprising a first infrared induction module, a second infrared induction module, a third infrared induction module, a main controller and a motor control chip, the first infrared induction module, the second infrared induction module and the third infrared induction module are all provided with a first input end and a first output end, the main controller is provided with a plurality of second input ends and a plurality of second output ends, the first input end is connected with the plurality of second output ends, the first output end is connected with a plurality of second input ends, the main controller is also provided with a first motor input end and a second motor input end, the motor control chip is provided with a first motor output end and a second motor output end, the first motor input end is connected with the first motor output end, and the second motor input end is connected with the second motor output end.

2. The positioning circuit for the C3200-type camera according to claim 1, wherein the first infrared sensing module, the second infrared sensing module and the third infrared sensing module are respectively provided with a first test point, a first resistor, a second resistor, a first capacitor, a first power supply, a first MOS transistor, a third resistor, a fourth resistor, a first magnetic bead, a second capacitor, a first sensor, a fifth resistor, a sixth resistor, a seventh resistor and a third capacitor; one end of the first resistor and one end of the first test point are both connected with a first input end, one end of the second resistor and one end of the first MOS tube are both connected with the other end of the first resistor, the other ends of the second resistor and the first MOS tube are both connected with one end of the first capacitor, the other end of the first capacitor is grounded, the first power supply is respectively connected with the first capacitor, the second resistor and the first MOS tube, one ends of the third resistor, the fourth resistor and the first magnetic bead are all connected with the other end of the first MOS tube, the other end of the first magnetic bead is connected with the first power supply, the other ends of the third resistor and the fourth resistor are connected with one end of the second capacitor, the other end of the second capacitor is grounded, AN (AN) pin on the first sensor is connected with the other end of the fourth resistor, one ends of the fifth resistor and the sixth resistor are connected with the first power supply, and the other ends of the fifth resistor and the sixth resistor are connected with one end of a seventh resistor, the other ends of the third capacitor and the seventh resistor are grounded, and a CO pin of the first sensor is connected with the other end of the sixth resistor.

3. The positioning circuit of claim 1, wherein the plurality of second inputs comprise a fifteenth pin, a fourteenth pin and a sixteenth pin, the plurality of second outputs comprise a thirteenth pin, a twelfth pin and a seventeenth pin, the fifteenth pin is connected to the first input of the first infrared sensing module, the fourteenth pin is connected to the first input of the second infrared sensing module, the sixteenth pin is connected to the first input of the third infrared sensing module, the thirteenth pin is connected to the first output of the first infrared sensing module, the twelfth pin is connected to the first output of the second infrared sensing module, and the seventeenth pin is connected to the first output of the third infrared sensing module.

4. The positioning circuit for the C3200-type camera according to claim 1, further comprising a stepping motor, wherein the first motor input end on the main controller is a tenth pin, the second motor input end on the main controller is a forty-fifth pin, the first motor output end on the motor control chip is a nineteenth pin, the second motor output end on the motor control chip is a third pin, the tenth pin is connected with the nineteenth pin, the third pin is connected with the forty-fifth pin, the motor control chip is further provided with a fourth pin, an eleventh pin, an eighteenth pin and a twenty-fifth pin, and the fourth pin, the eleventh pin, the eighteenth pin and the twenty-fifth pin are all connected with the stepping motor.

5. The positioning circuit for the C3200-type camera according to claim 1, further comprising a buzzer circuit module, wherein a twenty-ninth pin is disposed on the main controller, and the buzzer circuit module is connected to the twenty-ninth pin.

6. The positioning circuit for the C3200 camera as claimed in claim 1, wherein the positioning circuit further comprises a thermistor, the main controller is further provided with an eleventh pin of the main controller, and the thermistor is connected with the eleventh pin of the main controller.

7. The positioning circuit for the C3200 type camera according to claim 1, wherein the main controller adopts an STM32F103CBT6 chip.

8. The positioning circuit of claim 1, wherein the motor control chip is an a3980 chip.

9. The positioning circuit for the C3200 type camera according to claim 2, wherein the first sensor is an infrared sensor SFH9201 type.

10. The positioning circuit of claim 2, wherein the first MOS transistor is of type SI 2333.

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