CN112994694A - Low-power-consumption electronic equipment signal acquisition system and method - Google Patents
Low-power-consumption electronic equipment signal acquisition system and method Download PDFInfo
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- CN112994694A CN112994694A CN202110171092.XA CN202110171092A CN112994694A CN 112994694 A CN112994694 A CN 112994694A CN 202110171092 A CN202110171092 A CN 202110171092A CN 112994694 A CN112994694 A CN 112994694A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
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Abstract
The invention belongs to the technical field of low-power-consumption portable electronic equipment, and provides a low-power-consumption electronic equipment signal acquisition system and a data processing method. The acquisition system comprises front-end electronic equipment, an electronic equipment data output interface and a connection mode of the electronic equipment and a host. The front-end electronic equipment comprises a signal acquisition module, a signal amplification module and an analog acquisition signal output interface; the host comprises an analog audio interface, a data sampling module and a power supply module, wherein the data sampling module and the power supply module are connected with the analog audio interface; the front-end electronic equipment and the host machine are in signal connection through the audio data line, and power supply pickup and data output are completed through the audio data line. And data sampling, processing and displaying are completed through the host. According to the invention, by multiplexing part of the functional modules at the electronic equipment end and the host end, the design complexity of the front-end electronic equipment is simplified, and the design cost is reduced.
Description
Technical Field
The invention belongs to the technical field of low-power-consumption portable electronic equipment, and particularly relates to a low-power-consumption electronic equipment signal acquisition system and method.
Background
As shown in fig. 1, a conventional portable sensing and measuring system generally includes a power module, a signal acquisition module, an analog-to-digital conversion module, a digital signal processing module, a data display module, and a data transmission module at a portable sensing device end. Typical devices include sports bracelets, portable electrocardiogram measuring instruments, and the like. The power supply module is responsible for supplying power to other modules; the analog signal of the sensor is amplified and filtered, then is sampled by an analog/digital converter, and the sampling result is transmitted to a local microprocessor or an external host computer, and is further digitally processed and then is displayed on a local or host computer display screen.
In the above technical solution, on one hand, the design complexity of the power supply module, the digital operation module, and the data transmission module is usually greater than that of the signal acquisition module itself, and on the other hand, the host (e.g., a personal computer, a smart phone) end usually already includes these functional modules. If the portable device can reasonably reuse the existing modules, the design complexity and the design cost of the device can be greatly reduced. The existing scheme just has the problems of hardware end element redundancy and insufficient cost optimization in scheme implementation because the modules are not fully multiplexed.
Disclosure of Invention
The embodiment of the invention provides a low-power-consumption electronic equipment signal acquisition system, aiming at solving the problems of design redundancy and cost brought by the traditional portable induction measurement system.
The embodiment of the invention provides a low-power consumption electronic equipment signal acquisition system, which comprises electronic equipment and a host connected with the output end of the electronic equipment, wherein,
the electronic equipment comprises a signal acquisition module, a signal amplification module and a signal output interface, wherein the signal output end of the signal acquisition module is connected with the signal input end of the signal amplification module, and the signal output end of the signal amplification module is connected with the signal output interface;
the host comprises an audio interface and a power supply module connected with the audio interface;
the audio interface is connected with the signal output interface and used for receiving analog acquisition signals acquired by the electronic equipment;
the audio interface is further connected with the power input end of the signal acquisition module and the power input end of the signal amplification module, and is used for supplying power to the signal acquisition module and the signal amplification module by the power supply module.
Furthermore, the signal output interface is connected with the audio interface through an audio data line, and the analog acquisition signal is output to the host through the audio data line.
Furthermore, the audio interface is connected with the power input end of the signal acquisition module and the power input end of the signal amplification module through the audio data line, and based on the audio data line, the power is supplied to the signal acquisition module and the signal amplification module through the power module.
Furthermore, the host further comprises a sampling module, and a signal input end of the sampling module is connected with the audio interface to sample the analog acquisition signal and convert the analog acquisition signal into a digital signal.
Furthermore, the host further comprises a digital signal processing module, wherein a signal input end of the digital signal processing module is connected with a signal output end of the sampling module so as to perform digital operation on the digital signal obtained by sampling.
Furthermore, the host further comprises a display module, wherein a signal input end of the display module is connected with a signal output end of the digital signal processing module so as to display an operation result obtained by performing digital operation on the digital signal processing module.
Furthermore, the electronic device further comprises a coupling capacitor, and the coupling capacitor is arranged between the signal output end of the signal amplification module and the signal output interface.
The invention also provides a low-power consumption electronic equipment signal acquisition method, which comprises the following steps:
establishing connection between a host and the electronic equipment;
supplying power to the electronic equipment through the host computer, and receiving an analog acquisition signal output by the electronic equipment;
and the analog acquisition signal is sampled and processed by the host computer and then displayed.
The invention has the beneficial effects that: the invention provides a low-power consumption electronic equipment signal acquisition system, which comprises electronic equipment and a host connected with the output end of the electronic equipment, wherein the electronic equipment comprises a signal acquisition module, a signal amplification module and a signal output interface; the host comprises an audio interface, and a power module and a data sampling module which are connected with the audio interface; the audio interface is connected with the signal output interface through a data line and is used for receiving the analog acquisition signal acquired by the signal acquisition module; the audio interface also outputs a power supply to the signal output interface, and the power supply is used for supplying power from the host end power supply module to the electronic equipment end signal acquisition module and the signal amplification module. The modules included in the electronic equipment are a signal acquisition module and a signal amplification module, the processing process of the acquired analog acquisition signal is transferred to the host, the design complexity and the material cost of the electronic equipment are reduced, and the size of the electronic equipment is greatly reduced and the electronic equipment is more portable; in addition, the electronic equipment does not contain a power supply, but supplies power to the signal acquisition module and the signal amplification module through the power supply module of the host and supplies power to the host, so that power supply multiplexing is realized.
Drawings
FIG. 1 is a schematic diagram of a conventional portable induction measuring system provided in the prior art;
fig. 2 is a schematic diagram of a signal acquisition system of a low power consumption electronic device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a module of a low-power consumption signal acquisition system of an electronic device according to an embodiment of the present invention;
fig. 4 is a flowchart of a signal acquisition method for a low-power electronic device according to an embodiment of the present invention;
the system comprises an electronic device 1, a signal acquisition module 11, a signal amplification module 12, a coupling capacitor 13, a signal output interface 14, a host computer 2, a host computer 21, an audio interface 22, a power supply module 23, a sampling module 24, a digital signal processing module 25 and a display module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Because the power module, the digital signal processing module, the digital signal transmission module and the display module are not arranged in the electronic equipment, the analog acquisition signal acquired by the signal acquisition module is directly transmitted to the host for signal processing, and the design complexity and the material cost of the electronic equipment are reduced; the optimized electronic equipment circuit core device only comprises a signal acquisition module, a signal amplification module and a signal output interface, so that the physical size of the circuit is greatly reduced, and the electronic equipment circuit core device is more portable; in addition, the power supply module of the host supplies power to the signal acquisition module and the signal amplification module and the host, so that power supply multiplexing is realized.
Example one
Fig. 2 is a schematic diagram of a low-power consumption signal acquisition system of an electronic device according to an embodiment of the present invention. The low-power consumption electronic equipment signal acquisition system comprises electronic equipment 1 and a host machine 2 connected with the output end of the electronic equipment 1, wherein,
the electronic device 1 comprises a signal acquisition module 11, a signal amplification module 12 and a signal output interface 14, wherein a signal output end of the signal acquisition module 11 is connected with a signal input end of the signal amplification module 12, and a signal output end of the signal amplification module 12 is connected with the signal output interface 14.
The host 2 comprises an audio interface 21 and a power module 22 with an output end connected with the audio interface 21;
the audio interface 21 is connected with the signal output interface 14 and is used for receiving an analog acquisition signal acquired by the electronic device 1;
the audio interface 21 is further connected to a power input end of the signal acquisition module 11 and a power input end of the signal amplification module 12, and is configured to enable the power supply module 22 to supply power to the signal acquisition module 11 and the signal amplification module 12.
The electronic device 1 may include a heart rate measuring device, an electrocardiogram measuring device, a sports bracelet, a weight scale, and the like. The host 2 may include a general-purpose host, which may also be referred to as a user side. The universal host includes, but is not limited to, an electronic Device 1 such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Computer, or a notebook Computer. The user end can carry out human-computer interaction with a user through a keyboard, a mouse, a remote controller, a touch panel or voice control equipment and the like.
The host 2 and the electronic device 1 may be connected by a wired connection. Referring to fig. 3, the electronic device 1 is provided with a signal output interface 14, the host 2 is provided with an audio interface 21, and the audio interface 21 and the signal output interface 14 can be connected through an audio data line, so that the host 2 and the electronic device 1 can communicate with each other. The electronic apparatus 1 may output an analog pickup signal to the host 2 through the audio data line. Wherein, the audio data line interface is a 3.5 mm 4-core TRRS connector.
The signal acquisition module 11 may be a sensor, and is configured to acquire an analog acquisition signal. The type of the sensor may also be different according to the application scenario of the electronic device 1, and the sensor may include, but is not limited to, a weighing sensor, a pressure sensor, a heart rate sensor, and the like. And the sensors are different, the type of signal collected is also different, for example: the electronic device 1 is a heart rate detector, a sports bracelet or a heart rate sensor, and the type of signals collected by the sensor is heart rate signals.
The signal intensity of the analog acquisition signal is weak, the signal amplification module 12 is arranged in the electronic device 1, the signal output end of the sensor can be connected with the signal input end of the signal amplifier, and the acquired analog acquisition signal is input into the signal amplifier to be amplified and filtered and then input into the host 2 to be subjected to signal processing. And a signal amplifier is included in the signal amplification block 12.
Referring to fig. 3, the host 2 further includes a power supply module 22 having a signal input terminal connected to the audio interface 21. The audio interface 21 may also be connected to the power input terminal of the signal acquisition module 11 and the power input terminal of the signal amplification module 12 through an audio data line, and is configured to supply power to the signal acquisition module 11 and the signal amplification module 12 in the electronic device 1 through the power module 22 of the host 2.
Specifically, the voltage provided by the power module 22 to the signal acquisition module 11 and the signal amplification module 12 may be derived from the microphone bias voltage output by the audio interface 21 of the host 2, and is typically between 2.5V and 5V. Wherein. The audio data line between the audio interface 21 and the signal output interface 14, and the audio data line between the audio interface 21 and the signal acquisition module 11 and the signal amplification module 12 may be divided into two data lines, one data line is connected from the audio interface 21 to the end of the electronic device 1, and the other data line is used for transmitting the analog acquisition signal and the other data line is used for transmitting the power supply signal. Of course, it is also possible to provide two audio interfaces 21, wherein one audio interface 21 supplies power to the electronic device 1, and the other audio interface 21 receives the analog capture signal output by the electronic device 1.
With continued reference to fig. 3, the electronic device 1 further includes a coupling capacitor 13, and the coupling capacitor 13 is disposed between the signal output end of the signal amplification module 12 and the signal output interface 14. The coupling capacitor 13 can transmit an upper-level ac signal to a lower-level ac signal, that is, an ac signal output by the signal amplification module 12 is input to the host 2.
In the embodiment of the invention, by providing the low-power consumption electronic device signal acquisition system, the electronic device 1 and the host 2 establish signal connection through the audio data line, and power supply pickup and data output are completed through the audio data line. And data sampling, processing and display are accomplished by the host 2. The electronic device 1 is not internally provided with the power supply module 22, the digital signal processing module 24, the digital signal transmission module and the display module 25, but is arranged in the host 2 to directly transmit the analog acquisition signal to the host 2 for signal processing, so that the design complexity and the material cost of the electronic device 1 are reduced. And the optimized circuit core device of the electronic equipment 1 only comprises the signal acquisition module 11, the signal amplification module 12 and the signal output interface 14, so that the physical size of the circuit is greatly reduced and the circuit is more portable. In addition, since the electronic device 1 does not include a power supply, the power supply module 14 of the host supplies power to the signal acquisition module 11 and the signal amplification module 12 and the host itself, so that power supply multiplexing is realized.
Example two
With continued reference to fig. 3, on the basis of the first embodiment, the host 2 further includes a sampling module 23, and a signal input end of the sampling module 23 is connected to the audio interface 21 to sample the analog collected signal and convert the analog collected signal into a digital signal.
The acquisition module 23 may be an analog/digital conversion module, a signal input end of the analog/digital conversion module may be directly connected to the audio interface 21, an analog acquisition signal transmitted to the audio interface 21 by the electronic device 1 through an audio data line is subjected to signal conversion, and the analog acquisition signal is converted into a digital signal, so as to obtain a signal type that the host 2 can recognize and display. Specifically, after the external microphone (i.e., the electronic device 1) is turned on by the software of the host 2, the input data of the microphone interface is sampled in real time, at this time, in the embodiment of the present invention, the host 2 recognizes the connected electronic device 1 as a microphone input, and the collecting module is originally used for sampling the microphone data, and at this time, is also used for sampling the data transmitted by the electronic device 1.
Optionally, the host 2 further includes a digital signal processing module 24, and a signal input end of the digital signal processing module 24 is connected to a signal output end of the sampling module 23, so as to perform digital operation on the digital signal sampled by the sampling module 23.
The signal input end of the digital signal processing module 24 is connected to the signal output end of the sampling module 23, and after the sampling module 23 performs analog-to-digital conversion, the digital signal can be transmitted to the digital signal processing module 24. The digital signal processing module 24 can be implemented by a microprocessor, i.e. the microprocessor can calculate the sampled digital signal and represent the signal in a digital manner.
The transmission of the digital signal in the host 2 may be wireless/wired transmission, and the digital signal may also be transmitted to a memory of the host 2 through a wireless interface or a wired interface for storage, and the like.
Optionally, the host 2 further includes a display module 25, and a signal input end of the display module 25 is connected to a signal output end of the digital signal processing module 24, so as to display an operation result obtained by performing digital operation on the digital signal processing module 24.
Wherein, the signal input end of the display module 25 is connected with the signal output end of the digital signal processing module 24. The display module 25 may include a display screen, and the display screen may display the operation result obtained by the calculation processing of the digital signal processing module 24. The calculation result may include numbers and wave patterns, for example: the heart rate is detected, and the finally output operation result shows that the heart rate is 70 on a display screen.
It should be noted that in practical applications, the present system requires the electronic device 1 to operate at a power less than the rated power (typically less than 10mW) output by the audio interface 21 of the host 2; the sampling frequency at which the electronic device 1 operates needs to be lower than the maximum sampling frequency supported by the host 2 audio interface 21 (typically less than 96 KHz).
In the embodiment of the invention, the electronic device 1 and the host 2 establish signal connection through the audio data line, and complete power supply pickup and data output through the audio data line. And data sampling, processing and display are accomplished by the host 2. The modules included in the electronic equipment 1 are the signal acquisition module 11 and the signal amplification module 12, the processing process of the acquired analog acquisition signals is transferred to the host 2, the design complexity and the material cost of the electronic equipment 1 are reduced, and the size of the electronic equipment 1 is greatly reduced and is more portable. In addition, since the electronic device 1 does not include a power supply, the power supply module 14 of the host 1 supplies power to the signal acquisition module 11 and the signal amplification module 12 and the host itself, so that power supply multiplexing is realized.
EXAMPLE III
Fig. 4 is a flowchart of a signal acquisition method for a low-power-consumption electronic device according to an embodiment of the present invention. A low-power consumption electronic equipment signal acquisition method comprises the following steps:
and S1, establishing the connection between the host 2 and the electronic device 1.
The host 2 and the electronic device 1 may be connected by a wired connection. The electronic device 1 is provided with the signal output interface 14, the host 2 is provided with the audio interface 21, the audio interface 21 and the signal output interface 14 can be connected through an audio data line, communication between the host 2 and the electronic device 1 is achieved, and the electronic device 1 outputs analog acquisition signals to the host 2 through the audio data line.
Specifically, the electronic device 1 includes a signal acquisition module 11 and a signal amplification module 12 connected to the signal acquisition module 11. The signal acquisition module 11 may be a sensor for acquiring analog acquisition signals. The signal amplification module 12 may include a signal amplifier, and may input the acquired analog acquisition signal with weak signal strength to the signal amplifier to amplify and filter the analog acquisition signal, and then input the analog acquisition signal to the host 2 for signal processing.
And S2, supplying power to the electronic equipment 1 through the host 2, and receiving the analog acquisition signal output by the electronic equipment 1.
The electronic device 1 includes a signal acquisition module 11, a signal amplification module 12, and a signal output interface 14. The host 2 includes an audio interface 21 and a power supply module 22 having a signal output terminal connected to the audio interface 21. After the audio interface 21 is connected with the signal output interface 14 through the audio data line, the communication between the electronic device 1 and the host 2 can be realized, and the analog acquisition signal acquired by the signal acquisition module 11 is transmitted to the host 2 for signal processing. And the audio data line can be divided into two branches, one branch is used as an input branch of the acquired analog acquisition signal, and the other branch is used as an input branch of the power supply signal of the electronic device 1. The audio interface 21 is connected to the power input terminal of the signal acquisition module 11 and the power input terminal of the signal amplification module 12 through an audio data line, and is configured to supply power to the electronic device 1 through the power module 22 of the host 2. Of course, it is also possible to provide two audio interfaces 21, wherein one audio interface 21 transmits the power voltage for the electronic circuit, and the other audio interface 21 receives the analog acquisition signal output by the electronic device 1.
And S3, the analog acquisition signal is sampled and processed by the host machine 2 and then displayed.
The host 2 may sample and process the received analog acquisition signal to convert the analog acquisition signal into an operation result that the host 2 can recognize the type of the received signal and process the signal, for example: if the electronic device 1 is a heart rate measurer, the operation result is the heart rate.
In the embodiment of the invention, by providing the low-power consumption electronic device signal acquisition system, the electronic device 1 and the host 2 establish signal connection through the audio data line, and complete power supply pickup and data output through the audio data line, and complete data sampling, processing and displaying through the host 2. The module that includes in electronic equipment 1 has signal acquisition module 11 and signal amplification module 12, has shifted to host computer 2 to the analog acquisition signal's that gathers processing procedure, has reduced electronic equipment 1's design complexity and material cost, and electronic equipment 1's size reduces by a wide margin, and is more portable. In addition, since the electronic device 1 does not include a power supply, the power supply module 14 of the host 2 supplies power to the signal acquisition module 11 and the signal amplification module 12 and the host itself, so that power supply multiplexing is realized.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. A low-power consumption electronic equipment signal acquisition system is characterized by comprising electronic equipment and a host connected with the output end of the electronic equipment, wherein,
the electronic equipment comprises a signal acquisition module, a signal amplification module and a signal output interface, wherein the signal output end of the signal acquisition module is connected with the signal input end of the signal amplification module, and the signal output end of the signal amplification module is connected with the signal output interface;
the host comprises an audio interface and a power supply module connected with the audio interface;
the audio interface is connected with the signal output interface and used for receiving analog acquisition signals acquired by the electronic equipment;
the audio interface is further connected with the power input end of the signal acquisition module and the power input end of the signal amplification module, and is used for supplying power to the signal acquisition module and the signal amplification module by the power supply module.
2. The signal acquisition system for low power consumption electronic devices of claim 1 wherein said signal output interface is connected to said audio interface via an audio data line, said analog acquisition signal being output to said host via said audio data line.
3. The signal acquisition system for low power consumption electronic equipment according to claim 2, wherein the audio interface is connected to the power input terminal of the signal acquisition module and the power input terminal of the signal amplification module through the audio data line, and the signal acquisition module and the signal amplification module are supplied with power through the power supply module based on the audio data line.
4. The signal acquisition system for low power consumption electronic devices of claim 1, wherein the host further comprises a sampling module, and a signal input terminal of the sampling module is connected to the audio interface to sample the analog acquisition signal and convert the analog acquisition signal into a digital signal.
5. The signal acquisition system for low-power consumption electronic equipment according to claim 4, wherein the host further comprises a digital signal processing module, and a signal input end of the digital signal processing module is connected with a signal output end of the sampling module so as to perform digital operation on the sampled digital signal.
6. The signal acquisition system for low-power consumption electronic equipment according to claim 5, wherein the host further comprises a display module, and a signal input end of the display module is connected with a signal output end of the digital signal processing module so as to display an operation result obtained by performing digital operation on the digital signal processing module.
7. The low-power consumption electronic device signal acquisition system of claim 1, wherein the electronic device further comprises a coupling capacitor disposed between the signal output terminal of the signal amplification module and the signal output interface.
8. A low-power consumption electronic equipment signal acquisition method is characterized by comprising the following steps:
establishing connection between a host and the electronic equipment;
supplying power to the electronic equipment through the host computer, and receiving an analog acquisition signal output by the electronic equipment;
and the analog acquisition signal is sampled and processed by the host computer and then displayed.
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