CN209821622U - Signal acquisition system - Google Patents
Signal acquisition system Download PDFInfo
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- CN209821622U CN209821622U CN201920539739.8U CN201920539739U CN209821622U CN 209821622 U CN209821622 U CN 209821622U CN 201920539739 U CN201920539739 U CN 201920539739U CN 209821622 U CN209821622 U CN 209821622U
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Abstract
The application discloses signal acquisition system utilizes second signal processing device to carry out serialization processing with first synchronizing signal to transmit the first synchronizing signal after serialization processing to first signal processing device through serial transmission cable, carry out deserializing by first signal processing device to first synchronizing signal again, and transmit the first synchronizing signal after deserializing to first sensor. Therefore, in the signal acquisition system with the requirement of synchronously acquiring the signals, the first synchronous signal can be transmitted in a long distance. And then solved the signal acquisition system that has the synchronous acquisition demand of signal that exists among the prior art, can't realize the long distance transmission's of synchronizing signal technical problem.
Description
Technical Field
The application relates to the field of signal acquisition, in particular to a signal acquisition system.
Background
As competition for the ocean increases, american scientists have proposed a concept of digital ocean based on the wide application of various information (e.g., image information) in the fields of industry, aviation, etc., which uses the existing technology to measure and process various data of the ocean, and completes the driving of the ocean by analyzing and researching the acquired various information, and related signal acquisition devices such as a multi-camera array, a radar array, and a millimeter wave array, etc., all need to be triggered by a synchronization device, so as to calculate accurate data and related position information, and transmit the acquired signals to a remote signal processing device. However, there is a problem in that signal attenuation occurs with an increase in transmission distance due to the synchronization signal. Therefore, in a signal acquisition system with a signal synchronous acquisition requirement, how to realize long-distance transmission of synchronous signals becomes a key problem to be solved at present.
In view of the above technical problem that long-distance transmission of synchronization signals cannot be achieved in a signal acquisition system with a signal synchronization acquisition requirement, no effective solution has been proposed at present.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a signal transmission system to solve foretell signal acquisition system who has the synchronous acquisition demand of signal at least, can't realize synchronizing signal's long distance transmission's technical problem.
According to one aspect of the present application, there is provided a signal acquisition system, the signal acquisition system comprising a first signal acquisition device and a signal processing device connected to the first signal acquisition device, wherein the first signal acquisition device comprises a first sensor for acquiring a signal, the signal processing device comprises a synchronization signal output circuit for sending a first synchronization signal to the first sensor, the first signal acquisition device further comprises a first signal processing apparatus connected to the first sensor, the signal acquisition system further comprises a second signal processing apparatus connected to the first signal processing apparatus via a serial transmission cable, wherein the synchronization signal output circuit is communicatively connected to the second signal processing apparatus for transmitting the first synchronization signal to the second signal processing apparatus; the second signal processing device is used for serializing the first synchronous signal and transmitting the serialized first synchronous signal to the first signal processing device; and the first signal processing device is used for deserializing the serialized first synchronous signal and transmitting the deserialized first synchronous signal to the first sensor.
Optionally, the first signal processing device is a serializer, the second signal processing device is a deserializer, wherein the first signal processing device is further configured to receive the signal acquired by the first sensor, serialize the received signal acquired by the first sensor, and transmit the serialized signal acquired by the first sensor to the second signal processing device through a serial transmission cable, and the second signal processing device is further configured to receive the serialized signal acquired by the first sensor from the first signal processing device, deserialize the received serialized signal acquired by the first sensor, and transmit the deserialized signal acquired by the first sensor to the signal processing apparatus.
Optionally, the first synchronization signal comprises a field synchronization signal, the synchronization signal output circuit comprises a field synchronization signal output port for transmitting the field synchronization signal to the second signal processing device, the second signal processing device comprises an input port for receiving the field synchronization signal and the first signal processing device comprises an output port for transmitting the deserialized field synchronization signal to the first sensor.
Optionally, the first synchronization signal further includes a line synchronization signal, the synchronization signal output circuit further includes a line synchronization signal output port for transmitting the line synchronization signal to the second signal processing apparatus, the second signal processing apparatus further includes an input port for receiving the line synchronization signal, and the first signal processing apparatus further includes an output port for transmitting the deserialized line synchronization signal to the first sensor.
Optionally, an input port of the second signal processing device for receiving the field synchronization signal is a first GPIO interface and an input port for receiving the line synchronization signal is a second GPIO interface, an output port of the first signal processing device for transmitting the deserialized field synchronization signal to the corresponding first sensor is a third GPIO interface and an output port for transmitting the deserialized line synchronization signal to the first sensor is a fourth GPIO interface.
Optionally, the signal acquisition system further includes a second signal acquisition device, where the second signal acquisition device includes a second sensor and a third signal processing apparatus connected to the second sensor; the signal acquisition system further comprises a fourth signal processing device connected with the third signal processing device through a serial transmission cable, and the synchronization signal output circuit is further in communication connection with the fourth signal processing device, wherein the second sensor is configured to transmit a second synchronization signal to the third signal processing device; the third signal processing device is configured to serialize the second synchronization signal and transmit the serialized second synchronization signal to the fourth signal processing device; the fourth signal processing device is used for deserializing the serialized second synchronous signal and transmitting the deserialized second synchronous signal to the synchronous signal output circuit; and the synchronization signal output circuit is further configured to simultaneously trigger the first synchronization signal in response to the second synchronization signal and transmit the first synchronization signal.
Optionally, the first signal processing device is a serializer, the second signal processing device is a deserializer, the third signal processing device is a serializer, and the fourth signal processing device is a deserializer, wherein the first signal processing device is further configured to receive a signal acquired by the first sensor, serialize the received signal acquired by the first sensor, and transmit the serialized signal acquired by the first sensor to the second signal processing device through a serial transmission cable; the second signal processing device is also used for receiving the signals acquired by the first sensor after serialization processing from the first signal processing device, performing deserialization processing on the received signals acquired by the first sensor after serialization processing, and sending the signals acquired by the first sensor after deserialization processing to the signal processing equipment; the third signal processing device is also used for receiving the signals acquired by the second sensor, serializing the received signals acquired by the second sensor, and transmitting the serialized signals acquired by the second sensor to the fourth signal processing device through a serial transmission cable; and the fourth signal processing device is also used for receiving the serialized signals acquired by the second sensor from the third signal processing device, deserializing the received serialized signals acquired by the second sensor, and sending the deserialized signals acquired by the second sensor to the signal processing equipment.
Optionally, the second sensor comprises a field sync signal output port for transmitting a field sync signal to the third signal processing means, the third signal processing means comprises an input port for receiving the field sync signal and the fourth signal processing means comprises an output port for transmitting the field sync signal, and the sync signal output circuit comprises a field sync signal input port for receiving the field sync signal transmitted by the fourth signal processing means.
Optionally, the second sensor further comprises a line synchronization signal output port for transmitting a line synchronization signal to the third signal processing device, the third signal processing device further comprises an input port for receiving the line synchronization signal and the fourth signal processing device further comprises an output port for transmitting the line synchronization signal, and the synchronization signal output circuit further comprises a line synchronization signal input port for receiving the line synchronization signal transmitted by the fourth signal processing device.
Optionally, an input port of the third signal processing device for receiving the field synchronization signal is a fifth GPIO interface and an input port for receiving the line synchronization signal is a sixth GPIO interface, and an output port of the fourth signal processing device for transmitting the field synchronization signal is a seventh GPIO interface and an output port for transmitting the line synchronization signal is an eighth GPIO interface.
Optionally, the synchronization signal output circuit comprises a control signal output port for transmitting a control signal for controlling the first sensor to the second signal processing means; the second signal processing device comprises an input port for receiving the control signal, and is also used for serializing the control signal and transmitting the serialized control signal to the first signal processing device through the serial transmission cable; and the first signal processing means comprises an output port for transmitting the deserialized control signal to the first sensor.
Optionally, the synchronization signal output circuit comprises a control signal output port for transmitting a control signal for controlling the first sensor to the second signal processing means; the second signal processing device comprises an input port for receiving the control signal, and is also used for serializing the control signal and transmitting the serialized control signal to the first signal processing device through the serial transmission cable; the first signal processing device comprises an output port used for transmitting the control signal after deserializing to the first sensor, and the synchronous signal output circuit also comprises a control signal output port used for transmitting the control signal used for controlling the second sensor to the fourth signal processing device; the fourth signal processing device comprises an input port for receiving the control signal, and is also used for serializing the control signal and transmitting the serialized control signal to the third signal processing device through the serial transmission cable; and the third signal processing means comprises an output port for transmitting the deserialized control signal to the second sensor.
Optionally, the signal acquisition system includes a plurality of first signal acquisition devices, and the plurality of first signal acquisition devices are respectively provided with a plurality of first sensors and a plurality of first signal processing apparatuses respectively connected with the plurality of first sensors, and the signal acquisition system further includes a plurality of second signal processing apparatuses connected with the plurality of first signal processing apparatuses through serial transmission cables.
The embodiment of the utility model provides an in, carry out serialization processing through utilizing second signal processing apparatus with first synchronizing signal to through serial transmission cable will carry out the first synchronizing signal transmission after serialization processing to first signal processing apparatus, carry out deserializing by first signal processing apparatus to first synchronizing signal again, and will deserialize the first synchronizing signal transmission after handling to first sensor. The technical effect of long-distance transmission of the first synchronous signal can be achieved in the signal acquisition system with the signal synchronous acquisition requirement. And then solved the signal acquisition system that has the synchronous acquisition demand of signal that exists among the prior art, can't realize the long distance transmission's of synchronizing signal technical problem.
Drawings
Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic diagram of a signal acquisition system according to a first aspect of an embodiment of the application;
fig. 2 is a schematic diagram of a modified example of the signal acquisition system according to the first aspect of the embodiment of the present application;
fig. 3 is a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the embodiment of the present application;
fig. 4 is a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the embodiment of the present application;
FIG. 5 is a schematic diagram of a signal acquisition system according to a second aspect of an embodiment of the present application;
fig. 6 is a schematic diagram of a modified example of the signal acquisition system according to the second aspect of the embodiment of the present application;
fig. 7 is a schematic diagram of a further modification of the signal acquisition system according to the second aspect of the embodiment of the present application;
fig. 8 is a schematic diagram of a further modification of the signal acquisition system according to the second aspect of the embodiment of the present application;
fig. 9 is a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the embodiment of the present application;
fig. 10 is a schematic diagram of a further modification of the signal acquisition system according to the second aspect of the embodiment of the present application;
FIG. 11 shows a circuit schematic of a connector for accessing a first sensor used in the present embodiment;
fig. 12 is a schematic circuit diagram showing a first signal acquisition device according to the present embodiment;
fig. 13 is a schematic circuit diagram showing a connector for connecting to the signal processing device according to the present embodiment;
fig. 14 shows a schematic circuit diagram of the second signal processing device 30a according to the present embodiment;
fig. 15 shows a schematic circuit diagram of the second signal processing device 30b according to the present embodiment; and
fig. 16 shows a schematic circuit diagram of the second signal processing device 30c according to the present embodiment.
Detailed Description
Fig. 1 is a schematic diagram of a signal acquisition system according to a first aspect of an embodiment of the present application. Specifically, referring to fig. 1, according to the first aspect of the present embodiment, the signal acquisition system 1 includes first signal acquisition devices 10a, 10b, and 10c and a signal processing device 20 connected to the first signal acquisition devices 10a, 10b, and 10 c. Wherein the first signal collecting apparatus 10a, 10b and 10c includes first sensors 110a, 110b and 110c for collecting signal signals, the signal processing apparatus 20 includes a synchronization signal output circuit 210 for transmitting a first synchronization signal to the first sensors 110a, 110b and 110c, the first signal collecting apparatus 10a, 10b and 10c further includes first signal processing means 120a, 120b and 120c connected to the first sensors 110a, 110b and 110c, and the signal collecting system 1 further includes second signal processing means 30a, 30b and 30c connected to the first signal processing means 120a, 120b and 120c through a serial transmission cable. Wherein the synchronization signal output circuit 210 is communicatively connected to the second signal processing means 30a, 30b and 30 c.
Specifically, the synchronization signal output circuit 210 is used to transmit the first synchronization signal to the second signal processing devices 30a, 30b, and 30 c. Then, the second signal processing devices 30a, 30b, and 30c are configured to serialize the first synchronization signal and transmit the serialized first synchronization signal to the first signal processing devices 120a, 120b, and 120c through the serial transmission cable. Then, the first signal processing devices 120a, 120b, and 120c are used to deserialize the serialized first synchronous signal and transmit the deserialized first synchronous signal to the first sensors 110a, 110b, and 110 c.
Thus, in this way, the first synchronization signal is serialized by the second signal processing means 30a, 30b, and 30c, and the serialized first synchronization signal is transmitted to the first signal processing means 120a, 120b, and 120c through the serial transmission cable, and then deserialized by the first signal processing means 120a, 120b, and 120c, and transmitted to the first sensors 110a, 110b, and 110 c. The technical effect of long-distance transmission of the first synchronous signal can be achieved in the signal acquisition system with the signal synchronous acquisition requirement. And then solved the signal acquisition system that has the synchronous acquisition demand of signal that exists among the prior art, can't realize the long distance transmission's of synchronizing signal technical problem.
Further, the first sensors 110a, 110b, and 110c are, for example, but not limited to, any of the following sensors: image sensors, millimeter wave radar sensors, time of flight sensors, and the like.
Fig. 2 shows a schematic diagram of a modification of the signal acquisition system according to the first aspect of the present embodiment. Specifically, referring to fig. 2, on the basis of fig. 1, the first signal processing devices 120a, 120b, and 120c are serializers 120a, 120b, and 120c, and the second signal processing devices 30a, 30b, and 30c are deserializers 30a, 30b, and 30 c. Specifically, after the first sensors 110a, 110b, and 110c have collected the signals, the first signal processing devices 120a, 120b, and 120c (i.e., the serializers 120a, 120b, and 120c) receive the signals collected by the first sensors 110a, 110b, and 110c, serialize the received signals collected by the first sensors 110a, 110b, and 110c, and transmit the signals collected by the serialized first sensors 110a, 110b, and 110c to the second signal processing devices 30a, 30b, and 30c through the serial transmission cable. Then, the second signal processing devices 30a, 30b, and 30c (i.e., the deserializers 30a, 30b, and 30c) receive the signals collected by the first sensors 110a, 110b, and 110c after the serialization processing from the first signal processing devices 120a, 120b, and 120c, perform the deserialization processing on the received signals collected by the first sensors 110a, 110b, and 110c after the serialization processing, and transmit the signals collected by the first sensors 110a, 110b, and 110c after the deserialization processing to the signal processing apparatus 20. At this time, the signal processing device 20 may perform corresponding processing on the received signals collected by the first sensors 110a, 110b, and 110 c. Thus, in this way, in the signal acquisition system with the requirement of signal synchronous acquisition, not only long-distance transmission of the first synchronous signal is ensured, but also the signals are serialized by the first signal processing devices 120a, 120b and 120c (i.e., the serializers 120a, 120b and 120c) and deserialized by the second signal processing devices 30a, 30b and 30c (i.e., the deserializers 30a, 30b and 30c), so that the signals acquired by the first sensors 110a, 110b and 110c can be transmitted at a long distance.
Fig. 3 shows a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the present embodiment. Referring to fig. 3, the first synchronization signal includes a field synchronization signal, the synchronization signal output circuit 210 includes a field synchronization signal output port for transmitting the field synchronization signal to the second signal processing devices 30a, 30b, and 30c, the second signal processing devices 30a, 30b, and 30c include input ports for receiving the field synchronization signal, and the first signal processing devices 120a, 120b, and 120c include output ports for transmitting the deserialized field synchronization signal to the first sensors 110a, 110b, and 110 c.
Specifically, the synchronizing signal output circuit 210 transmits the field synchronizing signal to the second signal processing apparatuses 30a, 30b, and 30c through the field synchronizing signal output port. The second signal processing devices 30a, 30b, and 30c then receive the field sync signal through the input port of the field sync signal, serialize the field sync signal, and transmit the serialized field sync signal to the first signal processing devices 120a, 120b, and 120c through the serial transmission cable. The first signal processing devices 120a, 120b, and 120c then deserialize the received field sync signal and transmit the deserialized field sync signal to the first sensors 110a, 110b, and 110c through the output ports of the field sync signal. Thus, in this way, the field sync signal can be transmitted to the first sensors 110a, 110b, and 110c over a long distance. And the first sensors 110a, 110b and 110c can achieve the effect of synchronously acquiring signals according to the received field synchronization signals.
Fig. 4 shows a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the present embodiment. Specifically, referring to fig. 4, the first synchronization signal further includes a line synchronization signal, the synchronization signal output circuit 210 further includes a line synchronization signal output port for transmitting the line synchronization signal to the second signal processing devices 30a, 30b, and 30c, the second signal processing devices 30a, 30b, and 30c further include an input port for receiving the line synchronization signal, and the first signal processing devices 120a, 120b, and 120c further include an output port for transmitting the deserialized line synchronization signal to the first sensors 110a, 110b, and 110 c.
Specifically, the synchronizing signal output circuit 210 transmits the field synchronizing signal and the line synchronizing signal to the second signal processing apparatuses 30a, 30b, and 30c through the field synchronizing signal output port and the line synchronizing signal output port, respectively. Then, the second signal processing apparatuses 30a, 30b, and 30c receive the field sync signal and the line sync signal through the input port of the field sync signal and the input port of the line sync signal, respectively, serialize the field sync signal and the line sync signal, and transmit the serialized field sync signal and line sync signal to the first signal processing apparatuses 120a, 120b, and 120c through the serial transmission cable. Then, the first signal processing devices 120a, 120b, and 120c perform deserialization on the received field sync signal and line sync signal, and transmit the deserialized field sync signal and line sync signal to the first sensors 110a, 110b, and 110c through an output port of the field sync signal and an output port of the line sync signal, respectively. Thus, in this way, the field sync signal and the line sync signal can be transmitted to the first sensors 110a, 110b, and 110c over a long distance. Further, the first sensors 110a, 110b and 110c can start and end signal acquisition according to the received field synchronization signal and the received line synchronization signal, thereby achieving the effect of synchronously acquiring signals.
Optionally, the input ports of the second signal processing devices 30a, 30b and 30c for receiving the field synchronization signals are first GPIO interfaces, and the input ports for receiving the line synchronization signals are second GPIO interfaces. Furthermore, the output port of the first signal processing device 120a, 120b, and 120c for transmitting the deserialized field sync signal to the corresponding first sensor 110a, 110b, and 110c is a third GPIO interface, and the output port for transmitting the deserialized line sync signal to the first sensor 110a, 110b, and 110c is a fourth GPIO interface. Thus, the field sync signal and the line sync signal can be received and transmitted through the respective GPIO interfaces.
Fig. 5 is a schematic diagram showing a signal acquisition system according to the second aspect of the present embodiment. Referring to fig. 5, the signal acquisition system 1 further includes a second signal acquisition device 10d, and the second signal acquisition device 10d includes a second sensor 110d and a third signal processing apparatus 120d connected to the second sensor 110 d. Further, the signal acquisition system 1 further includes a fourth signal processing apparatus 30d connected to the third signal processing apparatus 120d through a serial transmission cable, and the synchronization signal output circuit 210 is also communicatively connected to the fourth signal processing apparatus 30 d.
Specifically, the second sensor 110d is a sensor in the active operation mode, and the first sensors 110a, 110b, and 110c are sensors in the driven operation mode. At this time, the second sensor 110d actively transmits the second synchronization signal to the third signal processing device 120 d. The third signal processing device 120d then serializes the second synchronization signal and transmits the serialized second synchronization signal to the fourth signal processing device 30d via the serial transmission cable. The fourth signal processing device 30d then deserializes the serialized second synchronization signal and transmits the deserialized second synchronization signal to the synchronization signal output circuit 210. And the synchronization signal output circuit 210 synchronously generates the first synchronization signal in response to the second synchronization signal without autonomously generating the synchronization signal, and applies the first synchronization signal to the first sensors 110a, 110b, and 110c operating in the slave mode. Therefore, in this way, all the sensors can achieve the purpose of synchronously acquiring signals.
Fig. 6 is a schematic diagram showing a modification of the signal acquisition system according to the second aspect of the present embodiment. Referring to fig. 6, the first signal processing devices 120a, 120b, and 120c are serializers 120a, 120b, and 120c, the second signal processing devices are deserializers 30a, 30b, and 30c, the third signal processing device 120d is a serializer 120d, and the fourth signal processing device 30d is a deserializer 30 d. Specifically, after the first sensors 110a, 110b, and 110c have collected the signals, the first signal processing devices 120a, 120b, and 120c (i.e., the serializers 120a, 120b, and 120c) receive the signals collected by the first sensors 110a, 110b, and 110c, serialize the received signals collected by the first sensors 110a, 110b, and 110c, and transmit the signals collected by the serialized first sensors 110a, 110b, and 110c to the second signal processing devices 30a, 30b, and 30c through the serial transmission cable. Then, the second signal processing devices 30a, 30b, and 30c (i.e., the deserializers 30a, 30b, and 30c) receive the signals collected by the first sensors 110a, 110b, and 110c after the serialization processing from the first signal processing devices 120a, 120b, and 120c, perform the deserialization processing on the received signals collected by the first sensors 110a, 110b, and 110c after the serialization processing, and transmit the signals collected by the first sensors 110a, 110b, and 110c after the deserialization processing to the signal processing apparatus 20. At this time, the signal processing device 20 may perform corresponding processing on the received signals collected by the first sensors 110a, 110b, and 110 c. And the third signal processing device 120d (i.e., the serializer 120d) is further configured to receive the signal collected by the second sensor 110d, serialize the received signal collected by the second sensor 110d, and transmit the serialized signal collected by the second sensor 110d to the fourth signal processing device 30d (i.e., the deserializer 30d) through the serial transmission cable. The fourth signal processing device 30d (i.e., the deserializer 30d) is then further configured to receive the signal acquired by the serialized second sensor 110d from the third signal processing device 120d (i.e., the serializer 120d), deserialize the received signal acquired by the serialized second sensor 110d, and send the deserialized signal acquired by the second sensor 110d to the signal processing apparatus 20. Thus, in this way, long distance transmission of the acquired signal can be achieved.
Fig. 7 is a schematic diagram showing a modification of the signal acquisition system according to the second aspect of the present embodiment. Referring to fig. 7, in addition to fig. 5, the second sensor 110d further includes a field sync signal output port for transmitting a field sync signal to the third signal processing apparatus 120d, the third signal processing apparatus 120d includes an input port for receiving the field sync signal and the fourth signal processing apparatus 30d includes an output port for transmitting the field sync signal, and the sync signal output circuit 210 includes a field sync signal input port for receiving the field sync signal transmitted by the fourth signal processing apparatus 30 d.
Specifically, the second sensor 110d may transmit the field sync signal to the third signal processing apparatus 120d (i.e., the serializer 120d) through the field sync signal output port. The third signal processing apparatus 120d (i.e., the serializer 120d) then receives the field synchronization signal through the input port of the field synchronization signal, serializes the field synchronization signal, and transmits the serialized field synchronization signal to the fourth signal processing apparatus 30d (i.e., the deserializer 30d) through the serial transmission cable. Then, the fourth signal processing device 30d (i.e., the deserializer 30d) deserializes the received field sync signal and transmits the deserialized field sync signal to the sync signal output circuit 210 through the output port of the field sync signal. And the synchronization signal output circuit 210 receives a field synchronization signal through the field synchronization signal input port. At this time, the synchronizing signal output circuit 210 may transmit the received field synchronizing signal to the second signal processing devices 30a, 30b, and 30c, transmit the field synchronizing signal to the first signal processing devices 120a, 120b, and 120c by the second signal processing devices 30a, 30b, and 30c, transmit the field synchronizing signal to the first sensors 110a, 110b, and 110c by the first signal processing devices 120a, 120b, and 120c, and then act on the first sensors 110a, 110b, and 110c operating in the slave mode. The purpose of synchronously acquiring signals by a plurality of sensors is realized.
Fig. 8 is a schematic diagram showing a modification of the signal acquisition system according to the second aspect of the present embodiment. Referring to fig. 8, in addition to fig. 5, the second sensor 110d further includes a line synchronization signal output port for transmitting a line synchronization signal to the third signal processing apparatus 120d, the third signal processing apparatus 120d further includes an input port for receiving the line synchronization signal and the fourth signal processing apparatus 30d further includes an output port for transmitting the line synchronization signal, and the synchronization signal output circuit 210 further includes a line synchronization signal input port for receiving the line synchronization signal transmitted by the fourth signal processing apparatus 30 d.
Specifically, the second sensor 110d may transmit the field sync signal and the line sync signal to the third signal processing apparatus 120d (i.e., the serializer 120d) through the field sync signal output port and the line sync signal output port, respectively. Then, the third signal processing apparatus 120d (i.e., the serializer 120d) receives the field sync signal and the line sync signal through the input port of the field sync signal and the input port of the line sync signal, serializes the field sync signal and the line sync signal, and transmits the serialized field sync signal and line sync signal to the fourth signal processing apparatus 30d (i.e., the deserializer 30d) through the serial transmission cable. Then, the fourth signal processing device 30d (i.e., the deserializer 30d) deserializes the received field sync signal and the received line sync signal, and transmits the deserialized field sync signal and received line sync signal to the sync signal output circuit 210 through the output port of the field sync signal and the output port of the line sync signal, respectively. And the synchronizing signal output circuit 210 receives the field synchronizing signal and the line synchronizing signal through the field synchronizing signal input port and the line synchronizing signal input port, respectively. At this time, the synchronizing signal output circuit 210 may transmit the received field synchronizing signal and line synchronizing signal to the second signal processing means 30a, 30b, and 30c, transmit the field synchronizing signal to the first signal processing means 120a, 120b, and 120c by the second signal processing means 30a, 30b, and 30c, transmit the field synchronizing signal and line synchronizing signal to the first sensors 110a, 110b, and 110c by the first signal processing means 120a, 120b, and 120c, and act on the first sensors 110a, 110b, and 110c operating in the slave mode. The purpose of synchronously acquiring signals by a plurality of sensors is realized.
Optionally, the input port of the third signal processing device 120d for receiving the field sync signal is a fifth GPIO interface and the input port for receiving the line sync signal is a sixth GPIO interface, the output port of the fourth signal processing device 30d for transmitting the field sync signal is a seventh GPIO interface and the output port for transmitting the line sync signal is an eighth GPIO interface. Thus, the field sync signal and the line sync signal can be received and transmitted through the respective GPIO interfaces.
Fig. 9 shows a schematic diagram of a further modification of the signal acquisition system according to the first aspect of the present embodiment. Referring to fig. 9, on the basis of fig. 1, the synchronization signal output circuit 210 includes an output port for transmitting a control signal for configuring the first sensors 110a, 110b, and 110c to the second signal processing devices 30a, 30b, and 30c, and the second signal processing devices 30a, 30b, and 30c include an input port for receiving the control signal. And the second signal processing means 30a, 30b and 30c also serve to serialize the control signal and transmit the serialized control signal to the first signal processing means 120a, 120b and 120c through the serial transmission cable. And the first signal processing means 120a, 120b and 120c comprise output ports for transmitting the deserialized control signals to the first sensors 110a, 110b and 110 c. Thus, in this way, not only the first sensors 110a, 110b and 110c can be synchronously controlled to collect signals, but also the time for the first sensors 110a, 110b and 110c to collect signals can be synchronously configured.
Fig. 10 is a schematic diagram showing a further modification of the signal acquisition system according to the second aspect of the present embodiment. Referring to fig. 10, on the basis of fig. 5, the synchronization signal output circuit 210 includes an output port for transmitting a control signal for configuring the first sensors 110a, 110b, and 110c to the second signal processing devices 30a, 30b, and 30c, and the second signal processing devices 30a, 30b, and 30c include an input port for receiving the control signal. And the second signal processing means 30a, 30b and 30c also serve to serialize the control signal and transmit the serialized control signal to the first signal processing means 120a, 120b and 120c through the serial transmission cable. And the first signal processing means 120a, 120b and 120c comprise output ports for transmitting the deserialized control signals to the first sensors 110a, 110b and 110c, the synchronization signal output circuit 210 further comprises a control signal output port for transmitting a control signal for configuring the second sensor 110d to the fourth signal processing means 30d, the fourth signal processing means 30d comprises an input port for receiving the control signal. And the fourth signal processing device 30d is also used to serialize the control signal and transmit the serialized control signal to the third signal processing device 120d via the serial transmission cable. And the third signal processing means 120d comprises an output port for transmitting the deserialized control signal to the second sensor 110 d. Thus, in this way, not only the second sensor 110d and the first sensors 110a, 110b and 110c can be synchronously controlled to collect signals based on the second synchronization signal transmitted by the second sensor 110d, but also the time for synchronously configuring the second sensor 110d and the first sensors 110a, 110b and 110c to collect signals can be realized.
Alternatively, as shown in fig. 1, the signal collecting system 1 includes a plurality of first signal collecting devices 10a, 10b, and 10c, and the plurality of first signal collecting devices 10a, 10b, and 10c are respectively provided with a plurality of first sensors 110a, 110b, and 110c and a plurality of first signal processing apparatuses 120a, 120b, and 120c connected to the plurality of first sensors 110a, 110b, and 110c, respectively, and the signal collecting system 1 further includes a plurality of second signal processing apparatuses 30a, 30b, and 30c connected to the plurality of first signal processing apparatuses 120a, 120b, and 120c through serial transmission cables.
Further, the serial transmission cable used in this embodiment may be a Shielded Twisted Pair (STP) cable or a coaxial Cable (CON), but is not limited thereto, and may also be other cables capable of transmitting serial signals. The signals collected by the plurality of sensors and the control signals can be received and transmitted through an I2C interface and an SPI interface.
In addition, it should be noted that fig. 11 shows a schematic circuit diagram of a connector for connecting to the first sensor. Fig. 12 shows a schematic circuit diagram of the first signal acquisition device. Fig. 13 shows a circuit schematic of a connector for accessing a signal processing device. Fig. 14 shows a circuit schematic of the second signal processing means 30 a. Fig. 15 shows a schematic circuit diagram of the second signal processing device 30 b. And fig. 16 shows a circuit schematic of the second signal processing means 30 c.
In summary, under the condition that the synchronization signal output circuit in the signal processing apparatus autonomously generates the synchronization signal, the first synchronization signal is generated and transmitted to the second signal processing device, the second signal processing device serializes the first synchronization signal, the serialized first synchronization signal is transmitted to the first signal processing device through the serial transmission cable, the first signal processing device deserializes the first synchronization signal, and the deserialized first synchronization signal is transmitted to the first sensor. Therefore, in the signal acquisition system with the signal synchronous acquisition requirement, the first synchronous signal can be transmitted in a long distance.
Similarly, the second sensor actively transmits the second synchronization signal to the third signal processing device under the condition that the synchronization signal output circuit in the signal processing device does not autonomously generate the synchronization signal. And then the third signal processing device serializes the second synchronous signal and transmits the serialized second synchronous signal to the fourth signal processing device through the serial transmission cable. Then the fourth signal processing device deserializes the serialized second synchronization signal and transmits the deserialized second synchronization signal to the synchronization signal output circuit. The synchronization signal output circuit then synchronously generates a first synchronization signal in response to the second synchronization signal and transmits the first synchronization signal so that the first synchronization signal can act on the first sensor operating in the slave mode. By the mode, not only can the synchronous signals be transmitted in a long distance, but also all the sensors can achieve the purpose of synchronously acquiring the signals.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. A signal acquisition system (1), the signal acquisition system (1) comprising a first signal acquisition device and a signal processing device (20) connected to the first signal acquisition device, wherein the first signal acquisition device comprises a first sensor for acquiring a signal, the signal processing device (20) comprises a synchronization signal output circuit (210) for sending a first synchronization signal to the first sensor, characterized in that,
the first signal acquisition equipment further comprises a first signal processing device connected with the first sensor, and the signal acquisition system (1) further comprises a second signal processing device connected with the first signal processing device through a serial transmission cable, wherein
The synchronous signal output circuit (210) is connected with the second signal processing device in a communication mode and used for transmitting the first synchronous signal to the second signal processing device;
the second signal processing device is used for serializing the first synchronous signal and transmitting the serialized first synchronous signal to the first signal processing device; and
the first signal processing device is used for deserializing the serialized first synchronous signal and transmitting the deserialized first synchronous signal to the first sensor.
2. The signal acquisition system (1) according to claim 1, characterized in that the first signal processing device is a serializer and the second signal processing device is a deserializer, wherein
The first signal processing device is further used for receiving the signal acquired by the first sensor, serializing the received signal acquired by the first sensor, and transmitting the serialized signal acquired by the first sensor to the second signal processing device through the serial transmission cable, and
the second signal processing device is also used for receiving the serialized signals collected by the first sensor from the first signal processing device, deserializing the received serialized signals collected by the first sensor, and sending the deserialized signals collected by the first sensor to the signal processing equipment (20).
3. The signal acquisition system (1) according to claim 1, wherein the first synchronization signal comprises a field synchronization signal, the synchronization signal output circuit (210) comprises a field synchronization signal output port for transmitting the field synchronization signal to the second signal processing means, the second signal processing means comprises an input port for receiving the field synchronization signal and the first signal processing means comprises an output port for transmitting a deserialized field synchronization signal to the first sensor.
4. The signal acquisition system (1) according to claim 3, wherein the first synchronization signal further comprises a line synchronization signal, the synchronization signal output circuit (210) further comprises a line synchronization signal output port for transmitting the line synchronization signal to the second signal processing means, the second signal processing means further comprises an input port for receiving the line synchronization signal and the first signal processing means further comprises an output port for transmitting a deserialized line synchronization signal to the first sensor.
5. The signal acquisition system (1) according to claim 4, wherein the input port of the second signal processing device for receiving the field synchronization signal is a first GPIO interface and the input port for receiving the line synchronization signal is a second GPIO interface, the output port of the first signal processing device for transmitting the deserialized field synchronization signal to the corresponding first sensor is a third GPIO interface and the output port for transmitting the deserialized line synchronization signal to the first sensor is a fourth GPIO interface.
6. The signal acquisition system (1) according to claim 1,
the signal acquisition system (1) further comprises a second signal acquisition device (10d), the second signal acquisition device (10d) comprising a second sensor (110d) and a third signal processing apparatus (120d) connected with the second sensor (110 d);
the signal acquisition system (1) further comprises a fourth signal processing device (30d) connected to the third signal processing device (120d) via a serial transmission cable, and the synchronization signal output circuit (210) is further communicatively connected to the fourth signal processing device (30d), wherein
The second sensor (110d) is configured to transmit a second synchronization signal to the third signal processing device (120 d);
the third signal processing device (120d) is configured to serialize the second synchronization signal and transmit the serialized second synchronization signal to the fourth signal processing device (30 d);
the fourth signal processing device (30d) is used for deserializing the serialized second synchronous signal and transmitting the deserialized second synchronous signal to the synchronous signal output circuit (210); and
the synchronization signal output circuit (210) is further configured to simultaneously trigger the first synchronization signal in response to the second synchronization signal and transmit the first synchronization signal.
7. The signal acquisition system (1) according to claim 6, wherein the first signal processing device is a serializer, the second signal processing device is a deserializer, the third signal processing device (120d) is a serializer (120d), the fourth signal processing device is a deserializer (30d), wherein
The first signal processing device is further configured to receive a signal acquired by the first sensor, serialize the received signal acquired by the first sensor, and transmit the serialized signal acquired by the first sensor to the second signal processing device through the serial transmission cable;
the second signal processing device is also used for receiving the serialized signals collected by the first sensor from the first signal processing device, deserializing the received serialized signals collected by the first sensor, and sending the deserialized signals collected by the first sensor to the signal processing equipment (20);
the third signal processing device (120d) is further configured to receive the signal acquired by the second sensor (110d), serialize the received signal acquired by the second sensor (110d), and transmit the serialized signal acquired by the second sensor (110d) to the fourth signal processing device (30d) through the serial transmission cable; and
the fourth signal processing device (30d) is further configured to receive the serialized signal acquired by the second sensor (110d) from the third signal processing device (120d), perform deserialization on the received serialized signal acquired by the second sensor (110d), and send the deserialized signal acquired by the second sensor (110d) to the signal processing apparatus (20).
8. The signal acquisition system (1) according to claim 6, wherein the second sensor (110d) comprises a field sync signal output port for transmitting a field sync signal to the third signal processing device (120d), the third signal processing device (120d) comprises an input port for receiving a field sync signal and the fourth signal processing device (30d) comprises an output port for transmitting a field sync signal, the sync signal output circuit (210) comprises a field sync signal input port for receiving a field sync signal transmitted by the fourth signal processing device (30 d).
9. The signal acquisition system (1) according to claim 8, wherein the second sensor (110d) further comprises a line synchronization signal output port for transmitting a line synchronization signal to the third signal processing device (120d), the third signal processing device (120d) further comprises an input port for receiving a line synchronization signal and the fourth signal processing device (30d) further comprises an output port for transmitting a line synchronization signal, the synchronization signal output circuit (210) further comprises a line synchronization signal input port for receiving a line synchronization signal transmitted by the fourth signal processing device (30 d).
10. The signal acquisition system (1) according to claim 9, characterized in that the input port for receiving field sync signals of the third signal processing means (120d) is a fifth GPIO interface and the input port for receiving line sync signals is a sixth GPIO interface, the output port for transmitting field sync signals of the fourth signal processing means (30d) is a seventh GPIO interface and the output port for transmitting line sync signals is an eighth GPIO interface.
11. The signal acquisition system (1) according to claim 1,
the synchronization signal output circuit (210) comprises a control signal output port for transmitting a control signal for controlling the first sensor to the second signal processing apparatus;
the second signal processing device comprises an input port for receiving the control signal, and the second signal processing device is also used for serializing the control signal and transmitting the serialized control signal to the first signal processing device through the serial transmission cable; and
the first signal processing device comprises an output port for transmitting the deserialized control signal to the first sensor.
12. The signal acquisition system (1) according to claim 6,
the synchronization signal output circuit (210) comprises a control signal output port for transmitting a control signal for controlling the first sensor to the second signal processing apparatus;
the second signal processing device comprises an input port for receiving the control signal, and the second signal processing device is also used for serializing the control signal and transmitting the serialized control signal to the first signal processing device through the serial transmission cable;
the first signal processing device comprises an output port for transmitting the deserialized control signal to the first sensor;
the synchronization signal output circuit (210) further comprises a control signal output port for transmitting a control signal for controlling the second sensor (110d) to the fourth signal processing device (30 d);
said fourth signal processing means (30d) comprising an input port for receiving said control signal, and said fourth signal processing means (30d) being further adapted to serialize said control signal and transmit said serialized control signal to said third signal processing means (120d) via said serial transmission cable; and
the third signal processing means (120d) comprises an output port for transmitting the deserialized control signal to the second sensor (110 d).
13. The signal acquisition system (1) according to claim 1, characterized in that the signal acquisition system (1) comprises a plurality of first signal acquisition devices, and the plurality of first signal acquisition devices are respectively provided with a plurality of first sensors and a plurality of first signal processing means respectively connected to the plurality of first sensors, the signal acquisition system (1) further comprises a plurality of second signal processing means connected to the plurality of first signal processing means through a serial transmission cable.
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