Sensor control circuit and corresponding camera device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-14
Smart Images
Figure CN224503443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit technology, and in particular to a sensor control circuit and a corresponding camera device. Background Technology
[0002] In modern society, camera sensors convert light signals into electrical signals and then generate digital images through photoelectric conversion. In camera devices, each sensor requires a corresponding control chip for operation. If a camera circuit incorporates multiple sensors, it needs to be configured with multiple control chips. Configuring multiple control chips increases the cost of the camera circuit; therefore, existing camera circuits suffer from a high-cost technical problem.
[0003] Therefore, it is necessary to provide a sensor control circuit and a corresponding camera device to solve the above-mentioned technical problems. Utility Model Content
[0004] This invention provides a sensor control circuit and a corresponding camera device, which effectively solves the technical problem of high cost of existing camera circuits.
[0005] This utility model provides a sensor control circuit, which includes:
[0006] The memory card module is used for storing image information.
[0007] A microphone module is used to transmit audio information through a microphone;
[0008] Ethernet module, used for connecting to the Internet;
[0009] The control chip is connected to the memory card module, the microphone module, and the Ethernet module. The control chip is used to transmit image information to the memory card module, receive audio information and process the audio information, and access the Internet through the Ethernet module.
[0010] The control chip includes a switching pin, a chip control pin, and a chip image pin. The switching pin is used to output a switching signal, and the chip control pin is used to output a control signal.
[0011] The first sensor includes a first sensor output pin and a first control pin, wherein the first sensor output pin is used to output a first image signal;
[0012] The second sensor includes a second sensor output pin and a second control pin, wherein the second sensor output pin is used to output a second image signal;
[0013] The switching interface includes an interface switching pin, an image input pin, an image output pin, an interface control input pin, and an interface control output pin. The interface switching pin is connected to the switching pin. The image input pin is connected to the first sensor output pin and the second sensor output pin. The image output pin is connected to the chip image pin. The interface control input pin is connected to the chip control pin. The interface control output pin is connected to the first control pin and the second control pin. The switching interface is used to switch the first image signal or the second image signal based on the switching signal, thereby transmitting the first image signal or the second image signal to the control chip. The switching interface is also used to switch the control signal based on the switching signal, thereby transmitting the control signal to the first sensor or the second sensor.
[0014] Furthermore, the switching interface includes a first start pin and a second start pin. The first sensor includes a first sensor start pin, and the second sensor includes a second sensor start pin. The first start pin is connected to the first sensor start pin, and the second start pin is connected to the second sensor start pin.
[0015] Based on a high-level switching signal, the first start pin is used to output a first start signal, the first sensor output pin is used to output the first image signal based on the first start signal, the switching interface is used to receive the first image signal through the image input pin, and the switching interface is used to transmit the first image signal to the control chip through the image output pin.
[0016] Based on the high-level switching signal, the switching interface is used to receive the control signal through the interface control input pin, and the switching interface is used to transmit the control signal to the first sensor through the interface control output pin.
[0017] Furthermore, based on the low-level switching signal, the second start pin is used to output a second start signal, the second sensor output pin is used to output the second image signal based on the second start signal, the switching interface is used to receive the second image signal through the image input pin, and the switching interface is used to transmit the second image signal to the control chip through the image output pin;
[0018] Based on the low-level switching signal, the switching interface is used to receive the control signal through the interface control input pin, and the switching interface is used to transmit the control signal to the second sensor through the interface control output pin.
[0019] Furthermore, each of the control chips is connected to 1-2 switching interfaces, and each switching interface is connected to one of the first sensors and one of the second sensors.
[0020] Furthermore, the sensor control circuit also includes the power supply module, which is connected to the switching interface. The power supply module is used to output a power supply voltage, which is used to power the switching interface.
[0021] Furthermore, the power supply module includes a voltage conversion chip, which includes a voltage conversion input pin and a voltage conversion output pin. The voltage conversion input pin is connected to an external power supply, and the voltage conversion output pin is connected to the switching interface. The external power supply is used to output an external power supply voltage, the voltage conversion input pin is used to input the external power supply voltage, the voltage conversion chip is used to perform a voltage conversion operation on the external power supply voltage to generate a power supply voltage, and the voltage conversion output pin is used to output the power supply voltage.
[0022] Furthermore, the power supply module also includes a filter capacitor, one end of which is connected to the external power supply and the voltage conversion input pin, and the other end of which is grounded. The filter capacitor is used to filter the external power supply voltage.
[0023] Furthermore, the power supply module also includes a transient voltage suppression diode, which is connected in parallel with the filter capacitor. The transient voltage suppression diode is used to provide surge and overvoltage protection for the voltage conversion chip.
[0024] Furthermore, the model numbers of the first sensor and the second sensor are both SC2336, the transient voltage suppression diode is SMJ15CA, and the voltage conversion chip is SY81103EABT.
[0025] A camera device comprising any of the sensor control circuits described above.
[0026] Compared to existing technologies, this invention offers the following advantages: It provides a sensor control circuit comprising a control chip, a first sensor, a second sensor, and a switching interface. The control chip outputs a switching signal and a control signal. The first sensor outputs a first image signal, and the second sensor outputs a second image signal. The switching interface switches between the first and second image signals based on the switching signal, allowing either signal to be transmitted to the control chip. The switching interface also switches between the control signal and the first and second sensor, enabling the control signal to be transmitted to either sensor. Therefore, the control chip manages both the first and second sensors, and the sensor control circuit can control multiple sensors with a single chip. Even if a camera control circuit contains multiple sensors, multiple control chips are not required. Compared to existing camera circuits, this camera control circuit has a lower cost, effectively solving the problem of high cost in existing camera circuits. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.
[0028] Figure 1 This is a block diagram of an embodiment of the sensor control circuit of this utility model.
[0029] Figure 2 This is a circuit diagram of the first sensor in one embodiment of the sensor control circuit of this utility model.
[0030] Figure 3 This is a circuit diagram of the second sensor in one embodiment of the sensor control circuit of this utility model.
[0031] Figure 4 This is a circuit diagram of the power supply module of one embodiment of the sensor control circuit of this utility model.
[0032] Figure 5 This is a circuit diagram of a microphone module according to an embodiment of the sensor control circuit of this utility model.
[0033] Figure 6 This is a circuit diagram of a memory card module according to an embodiment of the sensor control circuit of this utility model.
[0034] Figure 7 This is a circuit diagram of an Ethernet module according to an embodiment of the sensor control circuit of this utility model.
[0035] Figure 8This is a circuit diagram of a WIFI module according to an embodiment of the sensor control circuit of this utility model.
[0036] Figure 9 This is a circuit diagram of a flash memory module according to an embodiment of the sensor control circuit of this utility model.
[0037] In the diagram, 10 is the sensor control circuit; 11 is the control chip; 111 is the switching pin; 112 is the chip control pin; 113 is the chip image pin; 12 is the first sensor; 121 is the first sensor output pin; 122 is the first control pin; 123 is the first sensor start pin; 13 is the second sensor; 131 is the second sensor output pin; 132 is the second control pin; 133 is the second sensor start pin; 14 is the switching interface; 141 is the interface switching pin; 142 is the image input pin; 143 is the image output pin; 144 is the interface control input pin; 145 is the interface control output pin; 146 is the first start pin; 147 is the second start pin; 15 is the memory card module; 16 is the microphone module; 161 is the microphone; 162 is the microphone signal transmission terminal; 163 is the microphone power supply terminal; 17 is the Ethernet module; 18 is the WIFI module; 19 is the flash memory module; 20 is the power supply module; and 21 is the external power supply. Detailed Implementation
[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0039] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.
[0040] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.
[0041] In the diagram, units with similar structures are represented by the same labels.
[0042] Please refer to Figure 1 and Figure 5This invention provides a sensor control circuit 10, which includes a memory card module 15, a microphone module 16, an Ethernet module 17, a control chip 11, a first sensor 12, a second sensor 13, and a switching interface 14. The control chip 11 is connected to the memory card module 15, the microphone module 16, and the Ethernet module 17. The control chip 11 can transmit image information acquired by the sensors to the memory card module 15, and the memory card module 15 can store the image information. The microphone module 16 can send audio information through its microphone 161, which the control chip 11 can receive and process. The Ethernet module 17 can be connected to the Internet, allowing the control chip 11 to access the Internet.
[0043] Please refer to Figures 2 to 9 The following is a detailed description of the specific structure of the sensor control circuit 10:
[0044] Please refer to Figure 1 , Figure 2 and Figure 3 The control chip 11 includes a switching pin 111, a chip control pin 112, and a chip image pin 113. The switching pin 111 is used to output a switching signal, and the chip control pin 112 is used to output a control signal. The first sensor 12 is an SC2336, and includes a first sensor output pin 121 and a first control pin 122. The first sensor output pin 121 is used to output a first image signal. The second sensor 13 is also an SC2336, and includes a second sensor output pin 131 and a second control pin 132. The second sensor output pin 131 is used to output a second image signal.
[0045] Please refer to Figure 1 , Figure 2 and Figure 3 The switching interface 14 includes an interface switching pin 141, an image input pin 142, an image output pin 143, an interface control input pin 144, and an interface control output pin 145. The interface switching pin 141 is connected to the switching pin 111; the image input pin 142 is connected to the first sensor output pin 121 and the second sensor output pin 131; and the image output pin 143 is connected to the chip image pin 113. The interface control input pin 144 is connected to the chip control pin 112; and the interface control output pin 145 is connected to the first control pin 122 and the second control pin 132. The switching interface 14 is used to switch the first image signal or the second image signal based on the switching signal, thereby transmitting the first image signal or the second image signal to the control chip 11. The switching interface 14 is also used to switch the control signal based on the switching signal, thereby transmitting the control signal to the first sensor 12 or the second sensor 13.
[0046] Please refer to Figure 1 In a preferred embodiment of this invention, each control chip 11 is connected to 1-2 switching interfaces 14, and each switching interface 14 is connected to a first sensor 12 and a second sensor 13. In this invention, the control chip 11 can connect to a maximum of two switching interfaces 14, and each switching interface 14 can connect to two sensors, thus one control chip 11 can control four sensors. Therefore, the sensor control circuit 10 can control multiple sensors through one control chip 11. Even if the camera control circuit has four sensors, it does not require multiple control chips 11. Compared to existing camera circuits, this camera control circuit has a lower cost, effectively solving the technical problem of high cost in existing camera circuits.
[0047] Please refer to Figure 1 , Figure 2 and Figure 3 The switching interface 14 includes a first start pin 146 and a second start pin 147. The first sensor 12 includes a first sensor start pin 123, and the second sensor 13 includes a second sensor start pin 133. The first start pin 146 is connected to the first sensor start pin 123, and the second start pin 147 is connected to the second sensor start pin 133. Based on a high-level switching signal, the first start pin 146 can output a first start signal, and the first sensor output pin 121 can output a first image signal based on the first start signal. The switching interface 14 can receive the first image signal through the image input pin 142, and the switching interface 14 can transmit the first image signal to the control chip 11 through the image output pin 143. The control chip 11 can acquire image data from the first sensor 12 based on the first image signal. Based on a low-level switching signal, the second start pin 147 can output a second start signal, and the second sensor output pin 131 can output a second image signal based on the second start signal. The switching interface 14 can receive the second image signal through the image input pin 142, and the switching interface 14 can transmit the second image signal to the control chip 11 through the image output pin 143. The control chip 11 can acquire image data from the second sensor 13 based on the second image signal.
[0048] Please refer to Figure 1 , Figure 2 and Figure 3Based on a high-level switching signal, the switching interface 14 receives a control signal through the interface control input pin 144, and transmits the control signal to the first sensor 12 through the interface control output pin 145. The control signal can be used to adjust the parameters of the first sensor 12. Based on a low-level switching signal, the switching interface 14 receives a control signal through the interface control input pin 144, and transmits the control signal to the second sensor 13 through the interface control output pin 145. The control signal can be used to adjust the parameters of the second sensor 13.
[0049] Please refer to Figure 4 The sensor control circuit 10 also includes a power supply module 20, which is connected to the switching interface 14. The power supply module 20 outputs a power supply voltage to power the switching interface 14. The power supply module 20 includes a voltage conversion chip U40, model number SY81103EABT. The voltage conversion chip U40 includes a voltage conversion input pin IN and a voltage conversion output pin LX. The voltage conversion input pin IN is connected to an external power supply 21. The voltage conversion output pin LX is connected to the switching interface 14. The external power supply 21 outputs an external power supply voltage of 12V. The voltage conversion input pin IN is used to input the external power supply voltage, and the voltage conversion chip U40 can perform voltage conversion operations on the external power supply voltage, generating the power supply voltage. The voltage conversion output pin LX is used to output the power supply voltage, which is 5V.
[0050] Please refer to Figure 4 The power supply module 20 also includes a filter capacitor C2. One end of the filter capacitor C2 is connected to the external power supply 21 and the voltage conversion input pin IN, and the other end of the filter capacitor C2 is grounded. The filter capacitor C2 can filter the external power supply voltage. The power supply module 20 also includes a transient voltage suppression diode D58, which is model SMJ15CA. The transient voltage suppression diode D58 is connected in parallel with the filter capacitor C2. The transient voltage suppression diode D58 can provide surge and overvoltage protection for the voltage conversion chip U40.
[0051] Please refer to Figure 5 , Figure 6 and Figure 7The microphone module 16 includes a microphone 161, a microphone signal transmission terminal 162, and a microphone power supply terminal 163. The microphone power supply terminal 163 is connected to a power source (not shown in the figure) and is also connected to the microphone 161, allowing the microphone power supply terminal 163 to output the power supply voltage to the microphone. The microphone 161 can then generate a microphone signal based on audio information, and the microphone signal transmission terminal 162 is used to transmit the microphone signal to the control chip 11. The memory card module 15 includes a memory chip U1, which includes DAT0 pin, DAT1 pin, CLK pin, CD pin, WP pin, CMD pin, and VCC pin. The DAT0, DAT2, DAT3, CLK, and CMD pins are all connected to the control chip 11, and the DAT1 pin is connected to an SD card. The VCC pin is connected to a power source (not shown in the figure), and the power supply voltage output by the power source can power the memory chip U1. Therefore, the control chip 11 can transmit image information acquired by the sensor to the SD card, which can then store the image information. Ethernet module 17 includes Ethernet chip U11, model number H1601 CG. Ethernet chip U11 also includes TD+, TD-, RD+, RD-, TX+, TX-, RX+, and RX- pins. TD+, TD-, RD+, and RD- pins are connected to control chip 11, while TX+, TX-, RX+, and RX- pins are connected to a router. Therefore, control chip 11 can access the Internet through Ethernet chip U11.
[0052] Please refer to Figure 8 and Figure 9The sensor control circuit 10 also includes a WIFI module 18 and a flash memory module 19. The WIFI module 18 includes a WIFI chip U3, model number BL-M3873XU1. The WIFI chip U3 also includes a DM pin, a DP pin, and an ANT pin. The DM and DP pins are connected to the control chip 11, and the ANT pin is connected to the antenna. Thus, the WIFI chip U3 and the main control chip 17 can transmit signals bidirectionally. Furthermore, the VCC pin of the WIFI chip U3 is connected to a power supply (not shown in the figure), and the power supply voltage output can power the WIFI chip U3. Therefore, the control chip 11 can perform bidirectional data transmission with the terminal device through the WIFI chip U3. The flash memory module 19 includes a flash memory chip U6, model number KH25L6433FM2 I-08G. The flash memory chip U6 includes a CS pin, an SO pin, a WP pin, a HOLD pin, a CLK pin, and a SI pin, all of which are connected to the control chip 11. Therefore, the control chip 11 can transmit the image information acquired by the sensor to the flash memory chip U6, which can store the image information acquired by the sensor for a long time. Furthermore, the VCC pin of the flash memory chip U6 is connected to a power supply (not shown in the figure), and the power supply voltage output by the power supply can power the flash memory chip U6.
[0053] This utility model also provides a camera device, which internally incorporates a sensor control circuit 10. The device structure of the camera device is similar to that of the sensor control circuit 10; please refer to the description of the sensor control circuit 10's device structure for details. The working principle of the camera device is similar to that of the sensor control circuit 10; please refer to the description of the sensor control circuit 10's working principle for details.
[0054] The working principle of this utility model is as follows: When the sensor control circuit 10 is working, the control chip 11 outputs a switching signal through the switching pin 111 and a control signal through the chip control pin 112. The switching interface 14 receives the switching signal through the interface switching pin 141. Based on the high-level switching signal, the first start pin 146 of the switching interface 14 outputs a first start signal. Subsequently, the first sensor 12 receives the first start signal through the first sensor start pin 123. Based on the first start signal, the first sensor output pin 121 of the first sensor 12 outputs a first image signal. Next, the switching interface 14 receives the first image signal through the image input pin 142. Then, the switching interface 14 outputs the first image signal through the image output pin 143. Subsequently, the control chip 11 receives the first image signal through the chip image pin 113, and the control chip 11 can acquire the image data of the first sensor 12 based on the first image signal. At the same time, based on the high-level switching signal, the switching interface 14 receives the control signal through the interface control input pin 144. Furthermore, the switching interface 14 outputs the control signal through the interface control output pin 145. The first sensor 12 receives the control signal through the first control pin 122, and the control signal can be used to adjust the parameters of the first sensor 12.
[0055] Based on the low-level switching signal, the second start pin 147 of the switching interface 14 outputs a second start signal. Subsequently, the second sensor 13 receives this second start signal through the second sensor start pin 133. Based on this second start signal, the second sensor output pin 131 of the second sensor 13 outputs a second image signal. Next, the switching interface 14 receives the second image signal through the image input pin 142. Then, the switching interface 14 outputs the second image signal through the image output pin 143. Subsequently, the control chip 11 receives the second image signal through the chip image pin 113, and the control chip 11 can acquire image data from the second sensor 13 based on the second image signal. Simultaneously, based on the low-level switching signal, the switching interface 14 receives a control signal through the interface control input pin 144. Furthermore, the switching interface 14 outputs the control signal through the interface control output pin 145. The second sensor 13 receives this control signal through the second control pin 132, and this control signal can be used to adjust the parameters of the second sensor 13.
[0056] This invention provides a sensor control circuit comprising a control chip, a first sensor, a second sensor, and a switching interface. The control chip outputs a switching signal and a control signal. The first sensor outputs a first image signal, and the second sensor outputs a second image signal. The switching interface switches between the first and second image signals based on the switching signal, thereby transmitting either the first or second image signal to the control chip. The switching interface also switches between the control signal and the first or second image signal, thereby transmitting the control signal to either the first or second sensor. Therefore, the control chip can manage both the first and second sensors, and the sensor control circuit can control multiple sensors with a single control chip. Even if a camera control circuit has multiple sensors, this circuit does not require multiple control chips. Compared to existing camera circuits, this camera control circuit has a lower cost, effectively solving the technical problem of high cost in existing camera circuits.
[0057] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.
Claims
1. A sensor control circuit, characterized in that, It includes, The memory card module is used for storing image information. A microphone module is used to transmit audio information through a microphone; Ethernet module, used for connecting to the Internet; The control chip is connected to the memory card module, the microphone module, and the Ethernet module. The control chip is used to transmit image information to the memory card module, receive audio information and process the audio information, and access the Internet through the Ethernet module. The control chip includes a switching pin, a chip control pin, and a chip image pin. The switching pin is used to output a switching signal, and the chip control pin is used to output a control signal. The first sensor includes a first sensor output pin and a first control pin, wherein the first sensor output pin is used to output a first image signal; The second sensor includes a second sensor output pin and a second control pin, wherein the second sensor output pin is used to output a second image signal; The switching interface includes an interface switching pin, an image input pin, an image output pin, an interface control input pin, and an interface control output pin. The interface switching pin is connected to the switching pin. The image input pin is connected to the first sensor output pin and the second sensor output pin. The image output pin is connected to the chip image pin. The interface control input pin is connected to the chip control pin. The interface control output pin is connected to the first control pin and the second control pin. The switching interface is used to switch the first image signal or the second image signal based on the switching signal, thereby transmitting the first image signal or the second image signal to the control chip. The switching interface is also used to switch the control signal based on the switching signal, thereby transmitting the control signal to the first sensor or the second sensor.
2. The sensor control circuit according to claim 1, characterized in that, The switching interface includes a first start pin and a second start pin. The first sensor includes a first sensor start pin, and the second sensor includes a second sensor start pin. The first start pin is connected to the first sensor start pin, and the second start pin is connected to the second sensor start pin. Based on a high-level switching signal, the first start pin is used to output a first start signal, the first sensor output pin is used to output the first image signal based on the first start signal, the switching interface is used to receive the first image signal through the image input pin, and the switching interface is used to transmit the first image signal to the control chip through the image output pin. Based on the high-level switching signal, the switching interface is used to receive the control signal through the interface control input pin, and the switching interface is used to transmit the control signal to the first sensor through the interface control output pin.
3. The sensor control circuit according to claim 2, characterized in that, Based on the low-level switching signal, the second start pin is used to output a second start signal, the second sensor output pin is used to output the second image signal based on the second start signal, the switching interface is used to receive the second image signal through the image input pin, and the switching interface is used to transmit the second image signal to the control chip through the image output pin; Based on the low-level switching signal, the switching interface is used to receive the control signal through the interface control input pin, and the switching interface is used to transmit the control signal to the second sensor through the interface control output pin.
4. The sensor control circuit according to claim 1, characterized in that, Each of the control chips is connected to 1-2 of the switching interfaces, and each of the switching interfaces is connected to one of the first sensors and one of the second sensors.
5. The sensor control circuit according to claim 1, characterized in that, The sensor control circuit also includes a power supply module, which is connected to the switching interface. The power supply module is used to output a power supply voltage, which is used to power the switching interface.
6. The sensor control circuit according to claim 5, characterized in that, The power supply module includes a voltage conversion chip, which has a voltage conversion input pin and a voltage conversion output pin. The voltage conversion input pin is connected to an external power supply, and the voltage conversion output pin is connected to the switching interface. The external power supply is used to output an external power supply voltage, the voltage conversion input pin is used to input the external power supply voltage, the voltage conversion chip is used to perform a voltage conversion operation on the external power supply voltage to generate a power supply voltage, and the voltage conversion output pin is used to output the power supply voltage.
7. The sensor control circuit according to claim 6, characterized in that, The power supply module also includes a filter capacitor. One end of the filter capacitor is connected to the external power supply and the voltage conversion input pin, and the other end of the filter capacitor is grounded. The filter capacitor is used to filter the external power supply voltage.
8. The sensor control circuit according to claim 7, characterized in that, The power supply module also includes a transient voltage suppression diode, which is connected in parallel with the filter capacitor. The transient voltage suppression diode is used to provide surge and overvoltage protection for the voltage conversion chip.
9. The sensor control circuit according to claim 8, characterized in that, The first sensor and the second sensor are both SC2336, the transient voltage suppression diode is SMJ15CA, and the voltage conversion chip is SY81103EABT.
10. A camera device, characterized in that, It includes the sensor control circuit as described in any one of claims 1-9.