CN114363476B - 3D scanner working circuit and scanner - Google Patents
3D scanner working circuit and scanner Download PDFInfo
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- CN114363476B CN114363476B CN202111560489.4A CN202111560489A CN114363476B CN 114363476 B CN114363476 B CN 114363476B CN 202111560489 A CN202111560489 A CN 202111560489A CN 114363476 B CN114363476 B CN 114363476B
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Abstract
The invention discloses a 3D scanner working circuit and a scanner, wherein the 3D scanner working circuit comprises a signal access end, a control circuit, a driving circuit, a charging circuit, a first switch circuit and a second switch circuit, the control circuit is provided with an input end and a first control signal output end, the input end of the control circuit is connected with the signal access end, the input end of the driving circuit is connected with the first control signal input end of the control circuit, the controlled end of the first switch circuit is connected with the first driving signal output end of the driving circuit, the output end of the charging circuit is respectively connected with the input end of the first switch circuit and the input end of the second switch circuit, the output end of the first switch circuit is connected to an LED lamp, the controlled end of the second switch circuit is connected with the second driving signal output end of the driving circuit, and the output end of the second switch circuit is connected with the output end of the first switch circuit and is connected to the LED lamp. The invention solves the technical problem that the pattern information on the code element of the 3D scanner cannot be projected clearly.
Description
Technical Field
The invention relates to the technical field of scanners, in particular to a 3D scanner working circuit and a scanner.
Background
In the three-dimensional scanner equipment, the working principle is that whether the code element can be projected clearly in synchronization with shooting of a camera under the projection of a flash lamp, and even code element patterns containing specific information are key to the performance of the whole equipment.
Therefore, when the three-dimensional scanning is performed, the flash lamp and the camera need to be controlled to work synchronously, so that a better sampling effect can be achieved, but because the flash lamp, the camera and other equipment needing to be synchronously controlled are troublesome, when the LED is used as a projection lamp, the LED is generally controlled by a control circuit, the flash lamp needs to boost the power supply voltage to a voltage with a certain height to excite the rare gas lamp tube to emit light, but the circuit requirement on the voltage boosting the power supply voltage to the voltage with the certain height is higher, the required time is longer, the LED lamp and the camera are not triggered synchronously, and therefore, the code element cannot be clearly and uniformly presented with pattern information on the code element under the projection of the LED projection lamp.
Disclosure of Invention
The invention aims to provide a 3D scanner working circuit and a scanner, which solve the technical problem that pattern information on code elements of the 3D scanner cannot be projected clearly.
In order to achieve the above object, the present invention proposes a 3D scanner operating circuit, the 3D scanner operating circuit comprising:
The signal access terminal is used for accessing the camera synchronous trigger signal or outputting the camera synchronous trigger signal;
The input end of the charging circuit is connected with a power supply and is used for storing energy to light the LED lamp to high-brightness electric quantity;
The control circuit is provided with an input end and a first control signal output end, wherein the input end of the control circuit is connected with the signal access end and is used for outputting a first control signal according to the camera synchronous trigger signal;
the driving circuit is provided with an input end, a first driving signal output end and a second driving signal output end, wherein the input end of the driving circuit is connected with the first control signal input end of the control circuit and is used for outputting a first driving signal and a second driving signal according to the first control signal;
The controlled end of the first switch circuit is connected with the first driving signal output end of the driving circuit, the input end of the first switch circuit is connected with the output end of the charging circuit, and the output end of the first switch circuit is connected to the LED lamp and used for outputting the electric quantity stored in the charging circuit when receiving the first driving signal;
The controlled end of the second switch circuit is connected with the second driving signal output end of the driving circuit, the input end of the second switch circuit is connected with the output end of the charging circuit, the output end of the second switch circuit is connected with the output end of the first switch circuit and connected to the LED lamp, and the second switch circuit is used for outputting the electric quantity stored by the charging circuit to light the LED lamp simultaneously with the first switch circuit when receiving the second driving signal.
Optionally, the 3D scanner working circuit further includes a third switch circuit, the control circuit further includes a second control signal output end, the second control signal output end of the control circuit is connected with a controlled end of the third switch circuit, an input end of the third switch circuit is connected with a power supply, and an output end of the third switch circuit is connected to a cathode of the LED lamp; the anode of the LED lamp is connected with the output end of the first switch circuit;
The control circuit is also used for outputting a second control signal according to the camera synchronous trigger signal;
the third switch circuit is used for being conducted when the second control signal is received so as to form an energizing loop of the LED lamp.
Optionally, the 3D scanner working circuit further includes a feedback circuit, the driving circuit further includes a feedback signal end, and an input end of the feedback circuit is connected with an output end of the second switch circuit; the feedback signal end of the driving circuit is connected with the output end of the feedback circuit;
and the feedback circuit is used for sampling the power supply output to the LED lamp and feeding back and outputting the sampling signal to the driving circuit.
Optionally, the 3D scanner working circuit further includes a power supply circuit, and an output end of the power supply circuit is connected with an input end of the charging circuit.
Optionally, the power supply voltage in the power supply circuit is three times the rated voltage of the LED lamp.
Optionally, the 3D scanner working circuit further includes an inductance circuit, an input end of the inductance circuit is connected with an output end of the first switch circuit and an output end of the second switch circuit, and an output end of the inductance circuit is connected with an anode of the LED lamp.
Optionally, the first switch circuit includes a first resistor, a second resistor, a first switch tube and a second switch tube, wherein a first end of the first resistor is a controlled end of the first switch circuit, and a second end of the first resistor is connected with the controlled end of the first switch tube; the first end of the first switching tube is connected with the first end of the second switching tube, the connection node of the first switching tube is the input end of the first switching circuit, the second end of the first switching tube is connected with the second end of the second switching tube, and the connection node of the first switching tube is the output end of the first switching circuit; the first end of the second resistor is the controlled end of the first switching circuit, and the second end of the first resistor is connected with the controlled end of the second switching tube.
Optionally, the 3D scanner working circuit further includes a fan driving circuit, the control circuit further includes a fourth control signal output end, a controlled end of the fan driving circuit is connected with the fourth control signal output end of the control circuit, an input end of the fan driving circuit is connected to a power supply, and an output end of the fan driving circuit is connected to a fan;
The control circuit is also used for outputting a fan control signal;
the fan driving circuit is used for controlling the fan to work according to the fan control signal.
In order to achieve the above object, the present invention also provides a scanner including the 3D scanner operating circuit as described above.
Optionally, the 3D scanner working circuit further includes a light-compensating lamp driving circuit, the control circuit further includes a third control signal output end, the controlled end of the light-compensating lamp driving circuit is connected with the third control signal output end of the control circuit, the input end of the light-compensating lamp driving circuit is connected to a power supply, and the output end of the light-compensating lamp driving circuit is connected to a light-compensating lamp;
the control circuit is also used for outputting a light supplementing lamp control signal;
And the light supplementing lamp driving circuit is used for controlling the light supplementing lamp to work according to the light supplementing lamp control signal.
According to the technical scheme, the camera synchronous trigger signal is accessed through the signal access port, the control circuit outputs the first control signal according to the camera synchronous trigger signal, the charging circuit stores the electric quantity capable of lighting the LED lamp to be high, the driving circuit outputs the first driving signal and the second driving signal according to the first control signal, the first switching circuit is conducted when receiving the first driving signal, the second switching circuit is conducted when receiving the second driving signal and simultaneously outputs the electric quantity stored by the charging circuit to light the LED lamp in a mode of parallel driving of the first switching circuit and the second switching circuit, the electric quantity of the charging circuit is rapidly discharged to the LED lamp, and as the electric quantity at the moment is the electric quantity capable of lighting the LED lamp to be high, the first switching circuit and the second switching circuit are connected in parallel to improve the upper limit of the driving current, so that the LED lamp is rapidly lighted to be high, and the trigger signal is the camera synchronous trigger signal, namely, the synchronous trigger signal of the LED lamp is conducted and the camera synchronous trigger signal is realized, the projection symbol of the projection system is guaranteed, and the clear projection system of the projection system cannot be realized.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a block diagram of the 3D scanner operating circuitry in one embodiment.
Fig. 2 is a block diagram of a 3D scanner operating circuit in one embodiment.
Fig. 3 is a block diagram of a 3D scanner operating circuit in one embodiment.
Fig. 4 is a circuit schematic of the 3D scanner operating circuit in one embodiment.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
The application provides a 3D scanner working circuit and a scanner, which are used for solving the technical problem that pattern information on code elements of the 3D scanner cannot be projected clearly.
In an embodiment, as shown in fig. 1, the 3D scanner working circuit includes a signal access terminal 10, a control circuit 20, a driving circuit 30, a charging circuit 100, a first switch circuit 40, and a second switch circuit 50, where an input terminal of the charging circuit 100 is connected to a power supply, the control circuit 20 has an input terminal and a first control signal output terminal, an input terminal of the control circuit 20 is connected to the signal access terminal 10, the driving circuit 30 has an input terminal, a first driving signal output terminal, and a second driving signal output terminal, an input terminal of the driving circuit 30 is connected to a first control signal input terminal of the control circuit 20, a controlled terminal of the first switch circuit 40 is connected to a first driving signal output terminal of the driving circuit 30, an input terminal of the first switch circuit 40 is connected to an output terminal of the charging circuit 100, an output terminal of the first switch circuit 40 is connected to an LED lamp 60, a controlled terminal of the second switch circuit 50 is connected to a second driving signal output terminal of the driving circuit 30, and an input terminal of the second switch circuit 50 is connected to an output terminal of the LED lamp 60.
The signal access terminal 10 accesses the camera synchronization trigger signal or outputs the camera synchronization trigger signal, the charging circuit 100 stores the electric quantity capable of lighting the LED lamp to be high, the control circuit 20 outputs a first control signal according to the camera synchronization trigger signal, the driving circuit 30 outputs a first driving signal and a second driving signal according to the first control signal, and the first switching circuit 40 is turned on when receiving the first driving signal. The second switching circuit 50 is turned on when receiving the second driving signal and outputs the amount of electricity stored in the charging circuit to light the LED lamp 60 simultaneously with the first switching circuit. According to the embodiment, the upper limit of the passing driving current is increased through the first switch circuit 40 and the parallel driving mode of the first switch circuit 40, the electric quantity of the charging circuit is rapidly discharged to the LED lamp, and the electric quantity at the moment is the electric quantity capable of lighting the LED lamp to be high, and the first switch circuit and the second switch circuit are connected in parallel to realize high-current output, so that the LED lamp is rapidly lighted to be high, the driving time is reduced to MS level, the triggering signal is a camera synchronous triggering signal, namely, the synchronous triggering of the high-brightness state of the LED lamp and the photographing of the camera is realized, the clear high-brightness display of the projection signal is ensured, and the technical problem that pattern information on a code element of the 3D scanner cannot be clearly projected is solved. In addition, since the high current instantaneously discharged from the LED lamp to the high power can rapidly drive the LED lamp 60 at this time, the voltage requirement is reduced, no special boost is needed, and the LED lamp 60 can be driven at a normal voltage to ensure the safety of power consumption. Further avoiding the potential safety hazards that breakdown, induced magnetic field and the like of the high-voltage driving circuit can influence the operation of other circuits. In addition, at this time, the charging circuit 100 rapidly discharges through the first switching circuit 40 and the second switching circuit 50, and reduces the driving time to the MS level, realizing rapid highlighting. On this basis, the charging circuit 100 only stores the electric quantity capable of lighting the LED lamp to be high, and only can keep the LED lamp 60 high for a certain time after releasing, and only the camera is used for photographing, so that the long-time high-lighting damage of the LED lamp 60 can be avoided, and the service life of the LED60 in the scanner can be prolonged.
Alternatively, the LED lamp 60 is a structured light source, symbol projector, or projector.
Optionally, the control circuit 20 may be implemented by using an STM32 single-chip microcomputer.
Alternatively, the driving circuit 30 may be a chip U1, and the model may be MAX20078.
In an embodiment, as shown in fig. 2, the 3D scanner working circuit further includes a third switch circuit 70, the control circuit 20 further includes a second control signal output end, the second control signal output end of the control circuit 20 is connected to the controlled end of the third switch circuit 70, the input end of the third switch circuit 70 is connected to a power supply, and the output end of the third switch circuit 70 is connected to the negative electrode of the LED lamp 60; the anode of the LED lamp 60 is connected to the output terminal of the first switch circuit 40.
The control circuit 20 outputs a second control signal according to the camera synchronization trigger signal, and the third switch circuit 70 is turned on to form a power-on loop of the LED lamp 60 when receiving the second control signal. The third switching circuit 70 at this time can control the on time of the negative electrode of the LED lamp 60, so that the power supply path can be disconnected by the third switching circuit 70 at this time in the case where the first switching circuit 40 or the second switching circuit 50 is damaged. In addition, the LED lamp 60 is rapidly discharged to light the LED lamp 60 in a time when the positive and negative electrodes thereof are simultaneously turned on. The highlighting and flashing of the LED lamp 60 are realized, and the controllability of the triggering time interval is realized.
The negative electrode of the LED lamp 60 may be directly grounded.
In one embodiment, as shown in fig. 3, the 3D scanner operating circuit further includes a feedback circuit 80, the driving circuit 30 further includes a feedback signal terminal, and an input terminal of the feedback circuit 80 is connected to an output terminal of the second switch circuit 50; the feedback signal end of the driving circuit 30 is connected to the output end of the feedback circuit 80.
The feedback circuit 80 samples the power output to the LED lamp 60, and feedback-outputs the sampled signal to the driving circuit 30. The driving circuit 30 can control the currents output to the LED lamp 60 via the first switching circuit 40 and the second switching circuit 50 by adjusting the on/off timing of the first switching circuit 40 and the second switching circuit 50 through feedback of the sampling signal at this time, so as to form a negative feedback closed loop, and thus the currents output by the first switching circuit 40 and the second switching circuit 50 are constant.
Alternatively, as shown in fig. 4, the feedback circuit 80 is composed of a resistor.
In one embodiment, as shown in fig. 3, the 3D scanner operating circuit further includes a power supply circuit 90, and an output terminal of the power supply circuit 90 is connected to an input terminal of the charging circuit 100.
The power supply circuit 90 provides an input power to the charging circuit 100, and the charging circuit 100 stores the input power, so that the normal output of the first switch circuit 40 and the second switch circuit 50 is ensured during discharging, and rapid charging is realized. It should be noted that, the power supply circuit 90 may be implemented by a common power supply circuit 90, and the charging circuit 100 is formed by a large capacitor, so as to quickly charge and store enough electric energy. Based on the above scheme, the invention can rapidly discharge the electric quantity stored in the capacitor of the charging circuit 100 in a very short time, and lighten the LED lamp 60 to realize high light.
It should be noted that, since the time for which the projection lamp is highlighted is about 5mS, the amount of electricity charged in the large capacitor of the charging circuit 100 is instantaneously discharged during this time, which requires calculation to use a capacitor of a suitable size. The calculation formula mainly comprises: u1-u2=ir.
U＝Q/C，I＝dq/dt，Q＝UC，U2＝U1[1-e-t/RC]。
In the above formula, U1 is the voltage after the completion of charging, and U2 is the charging start voltage during charging. During discharging, U1 is a charging initial voltage, U2 is a voltage after charging is completed, I is a current, R is a charging and discharging resistance value, Q is an inductive charge quantity, C is an inductive capacity, dq is a real-time inductive charge quantity, dt is a real-time variable, e is a natural exponential term, and t is a time variable. The capacitance of the charging circuit 100 can be scientifically selected by the above formula.
Meanwhile, the driving current is adjusted by modifying the sampling current parameter according to the brightness requirement of the LED lamp 60.
In one embodiment, the power supply voltage in the power supply circuit 90 is three times the rated voltage of the LED lamp 60.
Through the above-described process, the power supply circuit 90 can effectively and quickly charge the charging circuit 100. It should be noted that, in the prior art, the general power supply voltage design cannot exceed the rated value of the LED lamp, but the present application can implement transient lighting through circuit design, and since the switching circuit is designed into two paths, in the prior art, the power supply voltage is generally default to be synchronously overlapped, but the applicant of the present application finds through a great deal of experiments that the setting of the power supply voltage according to the number of the switching circuits cannot implement highlighting, and setting the number to 3 times can implement transient highlighting when the LED lamp 60 is not damaged.
In an embodiment, as shown in fig. 3, the 3D scanner working circuit further includes an inductance circuit 150, an input end of the inductance circuit 150 is connected to an output end of the first switch circuit 40 and an output end of the second switch circuit 50, and an output end of the inductance circuit 150 is connected to an anode of the LED lamp 60.
In the above embodiment, the inductance circuit 150 can effectively prevent the alternating current from passing, and make the direct current pass smoothly, and has the effects of constant current, follow current and preventing abrupt current change. Alternatively, the inductive circuit 150 is implemented using inductance. Based on the above embodiment, the present invention can realize stable low-voltage constant-current driving of the LED lamp 60.
In an embodiment, as shown in fig. 4, the first switching circuit 40 includes a first resistor R1, a second resistor R2, a first switching tube Q1, and a second switching tube Q2, where a first end of the first resistor R1 is a controlled end of the first switching circuit 40, and a second end of the first resistor R1 is connected to the controlled end of the first switching tube Q1; the first end of the first switching tube Q1 is connected with the first end of the second switching tube Q2, the connection node is the input end of the first switching circuit 40, the second end of the first switching tube Q1 is connected with the second end of the second switching tube Q2, and the connection node is the output end of the first switching circuit 40; the first end of the second resistor R2 is a controlled end of the first switch circuit 40, and the second end of the first resistor R1 is connected to the controlled end of the second switch tube Q2.
Through the circuit, the first switching tube Q1 and the second switching tube Q2 are connected in parallel, at the moment, the mode of connecting 2 n-channel MOSFETs in parallel can ensure the use safety when large current passes through the first switching circuit 40, the first switching tube Q1 and the second switching tube Q2 can share the current pressure, the upper limit of the driving current is improved, and therefore the current requirement required by the high-brightness LED lamp 60 is ensured, and the high-current low-voltage constant-current driving is realized.
Optionally, the first switching tube Q1 and the second switching tube Q2 are n-channel mosfets.
In an embodiment, as shown in fig. 4, the second switching circuit 50 includes a third resistor R3, a fourth resistor R4, a third switching tube Q3, a fourth switching tube Q4, a first diode and a second diode, where a first end of the third resistor R3 is connected to a cathode of the first diode, a connection node of the third resistor R3 is a controlled end of the second switching circuit 50, and a second end of the third resistor R3, a cathode of the first diode and a controlled end of the second switching tube Q2 are interconnected; the first end of the third switching tube Q3 is connected with the first end of the fourth switching tube Q4, the connection node thereof is the input end of the second switching circuit 50, the second end of the third switching tube Q3 is connected with the second end of the fourth switching tube Q4, and the connection node thereof is the output end of the second switching circuit 50; the first end of the fourth resistor R4 is connected to the cathode of the second diode, the connection node is the controlled end of the second switching circuit 50, and the second end of the fourth resistor R4 is connected to the controlled end of the fourth switching tube Q4.
Through the circuit, the third switching tube Q3 and the fourth switching tube Q4 are connected in parallel, at the moment, the mode of connecting 2 n-channel MOSFETs in parallel can ensure the use safety when large current passes through the first switching circuit 40, the third switching tube Q3 and the fourth switching tube Q4 can share the current pressure, the upper limit of the driving current is improved, and therefore the current requirement required by the high-brightness LED lamp 60 is ensured, and the high-current low-voltage constant-current driving is realized.
Optionally, the third switching circuit 70 is an n-channel mosfet tube.
In an embodiment, the 3D scanner operating circuit further includes a fan driving circuit 130, the control circuit 20 further includes a fourth control signal output end, the controlled end of the fan driving circuit 130 is connected to the fourth control signal output end of the control circuit 20, the input end of the fan driving circuit 130 is connected to a power supply, and the output end of the fan driving circuit 130 is connected to the fan 140;
Wherein, the control circuit 20 is further configured to output a fan 140 control signal; the fan driving circuit 130 controls the fan 140 to work according to the fan 140 control signal. At this time, the fan 140 may serve as 3D scanner heat dissipation. The fan driving circuit 130 may be implemented with reference to the driving circuit 30 of the fan 140 in the prior art, and will not be described herein.
In an embodiment, the 3D scanner operating circuit further includes a camera operating circuit, the control circuit 20 further includes a fifth control signal output end, the controlled end of the camera operating circuit is connected to the fifth control signal output end of the control circuit 20, the input end of the camera operating circuit is connected to the power supply, and the output end of the camera operating circuit is connected to the camera.
Wherein the control circuit 20 is further configured to output a camera trigger signal; and the camera working circuit outputs the camera trigger signal to a camera, and the camera performs triggered photographing of the image according to the camera trigger signal. Through the scheme, the precise synchronization of the highlight of the LED lamp and the photographing time sequence of the camera can be realized.
The camera working circuit may be implemented with reference to a common signal transmission circuit in the prior art, and will not be described herein.
The working principle of the invention is described below with reference to fig. 1,2, 3 and 4:
The principle of the 3D scanner working circuit is mainly that the first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4 are controlled by comparing the internal reference voltage (8 feet REFI) of the chip U1 with the voltage on the external current sampling resistor R5 (0.005R of R5), and then the first switching tube Q1, the second switching tube Q2, the third switching tube Q3 and the fourth switching tube Q4 are used as PWM switching regulators (namely DL and DH ends) to control the magnitude of the current which is turned on and off and output to the LED lamp 60, so that a negative feedback closed loop circuit is formed, and the output current is further constant.
The DIM pin of the chip U1 is used as a control connection terminal of the MCU of the control circuit 20, and is rapidly and synchronously triggered and controlled by the high and low levels of the MCU.
At this time, the upper limit of the size of the passing driving current is improved by designing the circuit into a mode of connecting 2 n-channel MOSFETs in parallel, thereby meeting the driving requirement of the LED lamp 60, reducing the driving time to the MS level, rapidly lighting the LED lamp to high brightness, reducing the driving time to the MS level, and enabling the triggering signal to be a camera synchronous triggering signal, namely, realizing synchronous triggering of the high brightness state of the LED lamp and photographing of the camera, ensuring clear high brightness display of the projection signal, thereby solving the technical problem that pattern information on a code element of a 3D scanner cannot be projected clearly. At this time, the voltage requirement is reduced, and the LED lamp 60 can be driven at a normal voltage without performing a special step-up, and even at a low voltage, a technical effect equivalent to high-voltage driving can be achieved. On this basis, the charging circuit 100 only stores the electric quantity capable of lighting the LED lamp to be high, and only can keep the LED lamp 60 high for a certain time after releasing, and only the camera is used for photographing, so that the long-time high-lighting damage of the LED lamp 60 can be avoided, and the service life of the LED60 in the scanner can be prolonged.
The application also proposes a scanner comprising the 3D scanner operating circuit described above.
It should be noted that, since the scanner of the present application includes all the steps of the above 3D scanner working circuit, the scanner can also implement all the schemes of the 3D scanner working circuit, and has the same beneficial effects, which are not described herein.
In an embodiment, as shown in fig. 3, the 3D scanner working circuit further includes a light compensating lamp driving circuit 110, the control circuit 20 further includes a third control signal output end, the controlled end of the light compensating lamp driving circuit 110 is connected to the third control signal output end of the control circuit 20, the input end of the light compensating lamp driving circuit 110 is connected to a power supply, and the output end of the light compensating lamp driving circuit 110 is connected to the light compensating lamp 120.
Wherein, the control circuit 20 is further used for synchronously outputting a camera trigger signal and a light supplementing lamp control signal; the light compensating lamp driving circuit 110 controls the light compensating lamp 120 to operate according to the control signal of the light compensating lamp 120. Through the scheme, the light supplementing effect is effectively realized. In addition, the triggering signal is a synchronous triggering signal of the camera, so that the image shot by the light supplementing lamp 120 can be ensured to be clear and the brightness is proper.
The light-compensating lamp driving circuit 110 may be implemented with reference to a 3D scanner operating circuit, where the light-compensating lamp driving circuit 110 may include a signal access terminal 10, a driving circuit 30, a charging circuit 100, a first switching circuit 40, and a second switching circuit 50, where the signal access terminal 10 is used to access or output a light-compensating lamp control signal, and other circuit functions are not described herein in detail with reference to the embodiment of the 3D scanner operating circuit.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
Claims (10)
1. A 3D scanner operating circuit, the 3D scanner operating circuit comprising:
The signal access terminal is used for accessing the camera synchronous trigger signal or outputting the camera synchronous trigger signal;
The input end of the charging circuit is connected with a power supply and is used for storing energy to light the LED lamp to high-brightness electric quantity;
The control circuit is provided with an input end and a first control signal output end, wherein the input end of the control circuit is connected with the signal access end and is used for outputting a first control signal according to the camera synchronous trigger signal;
The driving circuit is provided with an input end, a first driving signal output end and a second driving signal output end, wherein the input end of the driving circuit is connected with the first control signal output end of the control circuit and is used for outputting a first driving signal and a second driving signal according to the first control signal;
The controlled end of the first switch circuit is connected with the first driving signal output end of the driving circuit, the input end of the first switch circuit is connected with the output end of the charging circuit, and the output end of the first switch circuit is connected to the LED lamp and is used for being conducted when the first driving signal is received;
The controlled end of the second switch circuit is connected with the second driving signal output end of the driving circuit, the input end of the second switch circuit is connected with the output end of the charging circuit, the output end of the second switch circuit is connected with the output end of the first switch circuit and connected to the LED lamp, and the second switch circuit is used for being conducted when receiving the second driving signal and outputting the electric quantity stored by the charging circuit to light the LED lamp simultaneously with the first switch circuit.
2. The 3D scanner operating circuit of claim 1, wherein the 3D scanner operating circuit further comprises a third switching circuit, the control circuit further comprises a second control signal output terminal, the second control signal output terminal of the control circuit is connected with the controlled terminal of the third switching circuit, the input terminal of the third switching circuit is connected with a power supply, and the output terminal of the third switching circuit is connected to the negative electrode of the LED lamp; the anode of the LED lamp is connected with the output end of the first switch circuit;
The control circuit is also used for outputting a second control signal according to the camera synchronous trigger signal;
the third switch circuit is used for being conducted when the second control signal is received so as to form an energizing loop of the LED lamp.
3. The 3D scanner operating circuit of claim 1, wherein the 3D scanner operating circuit further comprises a feedback circuit, the drive circuit further comprising a feedback signal terminal, an input of the feedback circuit being connected to an output of the second switching circuit; the feedback signal end of the driving circuit is connected with the output end of the feedback circuit;
and the feedback circuit is used for sampling the power supply output to the LED lamp and feeding back and outputting the sampling signal to the driving circuit.
4. The 3D scanner operating circuit of claim 1, wherein the 3D scanner operating circuit further comprises a power supply circuit, an output of the power supply circuit being connected to an input of the charging circuit.
5. The 3D scanner operating circuit of claim 4, wherein a supply voltage in the power supply circuit is three times a rated voltage of the LED lamp.
6. The 3D scanner operating circuit of claim 3, further comprising an inductive circuit, wherein an input of the inductive circuit is connected to an output of the first switching circuit and an output of the second switching circuit, respectively, and an output of the inductive circuit is connected to the LED lamp anode.
7. The 3D scanner operating circuit of claim 1, wherein the first switching circuit comprises a first resistor, a second resistor, a first switching tube, and a second switching tube, a first end of the first resistor being a controlled end of the first switching circuit, a second end of the first resistor being connected to the controlled end of the first switching tube; the first end of the first switching tube is connected with the first end of the second switching tube, the connection node of the first switching tube is the input end of the first switching circuit, the second end of the first switching tube is connected with the second end of the second switching tube, and the connection node of the first switching tube is the output end of the first switching circuit; the first end of the second resistor is the controlled end of the first switching circuit, and the second end of the first resistor is connected with the controlled end of the second switching tube.
8. The 3D scanner operating circuit of claim 7, wherein the 3D scanner operating circuit further comprises a light-compensating lamp driving circuit, the control circuit further comprises a third control signal output end, the controlled end of the light-compensating lamp driving circuit is connected with the third control signal output end of the control circuit, the input end of the light-compensating lamp driving circuit is connected with a power supply, and the output end of the light-compensating lamp driving circuit is connected to a light-compensating lamp;
the control circuit is also used for outputting a light supplementing lamp control signal;
And the light supplementing lamp driving circuit is used for controlling the light supplementing lamp to work according to the light supplementing lamp control signal.
9. The 3D scanner operating circuit of claim 7, wherein the 3D scanner operating circuit further comprises a fan driving circuit, the control circuit further comprises a fourth control signal output end, the controlled end of the fan driving circuit is connected with the fourth control signal output end of the control circuit, the input end of the fan driving circuit is connected with a power supply, and the output end of the fan driving circuit is connected to a fan;
The control circuit is also used for outputting a fan control signal;
the fan driving circuit is used for controlling the fan to work according to the fan control signal.
10. A scanner, characterized in that it comprises the 3D scanner operating circuit of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111560489.4A CN114363476B (en) | 2021-12-17 | 2021-12-17 | 3D scanner working circuit and scanner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111560489.4A CN114363476B (en) | 2021-12-17 | 2021-12-17 | 3D scanner working circuit and scanner |
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| CN114363476A CN114363476A (en) | 2022-04-15 |
| CN114363476B true CN114363476B (en) | 2024-04-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007249157A (en) * | 2006-02-16 | 2007-09-27 | Ricoh Co Ltd | Image forming apparatus, power supply device and control method |
| CN207965099U (en) * | 2018-02-02 | 2018-10-12 | 北京银思朗能源技术有限公司 | A kind of scanner of e-commerce transaction |
| CN111565494A (en) * | 2020-07-10 | 2020-08-21 | 深圳市全智芯科技有限公司 | LED lamp control circuit and baton |
| CN211352542U (en) * | 2020-07-10 | 2020-08-25 | 深圳市全智芯科技有限公司 | LED drive circuit, driver and lighting device |
| CN213991083U (en) * | 2020-12-18 | 2021-08-17 | 谢振兴 | Constant-current-driven ultraviolet lamp control circuit and air purifier |
-
2021
- 2021-12-17 CN CN202111560489.4A patent/CN114363476B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007249157A (en) * | 2006-02-16 | 2007-09-27 | Ricoh Co Ltd | Image forming apparatus, power supply device and control method |
| CN207965099U (en) * | 2018-02-02 | 2018-10-12 | 北京银思朗能源技术有限公司 | A kind of scanner of e-commerce transaction |
| CN111565494A (en) * | 2020-07-10 | 2020-08-21 | 深圳市全智芯科技有限公司 | LED lamp control circuit and baton |
| CN211352542U (en) * | 2020-07-10 | 2020-08-25 | 深圳市全智芯科技有限公司 | LED drive circuit, driver and lighting device |
| CN213991083U (en) * | 2020-12-18 | 2021-08-17 | 谢振兴 | Constant-current-driven ultraviolet lamp control circuit and air purifier |
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| Publication number | Publication date |
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| CN114363476A (en) | 2022-04-15 |
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