CN109884960A - A kind of sensor array data acquisition system based on daisy topology - Google Patents
A kind of sensor array data acquisition system based on daisy topology Download PDFInfo
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- CN109884960A CN109884960A CN201910258315.9A CN201910258315A CN109884960A CN 109884960 A CN109884960 A CN 109884960A CN 201910258315 A CN201910258315 A CN 201910258315A CN 109884960 A CN109884960 A CN 109884960A
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Abstract
The present invention provides a kind of sensor array data acquisition system based on daisy topology, each sensor (1) interconnects on the pin of side and is ultimately connected to the electric wire ground terminal (6) of the system on a ship chip (5) with analog-digital converter, the other side pin of each sensor (1) is connected on the side pin of corresponding single-pole single-throw switch (SPST) (3), the other side pin of each single-pole single-throw switch (SPST) (3) is interconnected and is ultimately connected on the port of the analog-digital converter (7) of the system on a ship chip (5) with analog-digital converter；Controller, that is, Digital Logical Circuits (4) of each single-pole single-throw switch (SPST) (3) is interconnected and is ultimately connected in numeral input/output connecting interface (8) of the system on a ship chip (5) with analog-digital converter.The present invention carries out data acquisition using the sensor array of daisy topology, reduces cabling complexity, component cost, improves system stability.
Description
Technical field
The present invention relates to the systems for carrying out distributed data acquisition by sensor array, especially a kind of to be based on daisy chain
The sensor array data acquisition system of topology, belongs to information science technology field.
Background technique
With the arriving of the internet of things era, distributed sensor is widely used.Especially sensor array columns
There are a many applications, such as sleep monitor in national health and medical field according to acquisition, fetal monitoring, eeg monitoring, cardioelectric monitor,
Whole-body temperature monitoring, is all each position for needing for sensor to be distributed in body；In addition in 5G and millimetre-wave radar field, by
Also there is the scene of 64 or 128 aerial arrays in the phased array system that high-frequency signal transmitting-receiving uses, needs to mutiple antennas or biography
Feel cell array and carries out line.However be attached mainly or by the way of in parallel at present, i.e., N number of sensor needs N's
Several cablings connection again, such topological structure keep the cabling of whole system very mixed and disorderly unordered, and largely effect on system can
By property and robustness.Thus, today that the connection type of traditional sensor parallel is greatly increased in number of sensors, not
It is applicable in again.
Summary of the invention
The purpose of the present invention is:
For the technology short slab of the above-mentioned prior art, the present invention provides a kind of sensor array columns based on daisy topology
According to acquisition system, there is the connection type for not increasing cabling complexity with number of sensors, controlled by being inserted at sensor
The mode of circuit realizes concatenated connection method, will greatly reduce the complexity of cabling, and finally provides more structurally sound biography
Sensor array data acquisition.
The purpose of the present invention can be realized by technical solution below:
A kind of sensor array data acquisition system based on daisy topology includes by being no less than two sensor groups
At sensor array, single-pole single-throw switch (SPST), Digital Logical Circuits and system on a ship core with analog-digital converter
Piece, each sensor on the sensor array are respectively connected with a single-pole single-throw switch (SPST) with controller, the list
The controller of monopole single throw switch is Digital Logical Circuits；Each sensor interconnects on the pin of side and is ultimately connected to have
The other side pin of the electric wire ground terminal of the system on a ship chip of analog-digital converter, each sensor is connected to respective correspondence
Single-pole single-throw switch (SPST) side pin on, the other side pin of each single-pole single-throw switch (SPST) interconnects and is ultimately connected to have
On the analog-digital converter port of the system on a ship chip of analog-digital converter；The controller of each single-pole single-throw switch (SPST) counts
Word logic circuit interconnect and be ultimately connected to analog-digital converter system on a ship chip numeral input/it is defeated
Out in connecting interface.
The sensor is pressure sensor.
The sensor is specially piezoelectric pressure indicator, piezoresistive pressure sensor, accelerometer formula pressure sensing
Device, capacitance pressure transducer, gas-pressure type pressure sensor, electrochemical sensor, temperature sensor and/or optical sensor.
The sensor array is classified as row, column, matrix and/or multichain arrangement.
The system on a ship chip with analog-digital converter includes data processing and transmission module.
Present invention can apply to the array systems of 2 multiple sensors of any of the above；If system-level integrated chip has multiple
Analog-digital converter, each analog-digital converter can be connect with a this system.
The beneficial effects of the present invention are:
The present invention carries out data acquisition using the sensor array of daisy topology, reduces cabling complexity, component
Cost improves system stability:
1. substantially reducing the cabling number and complexity of data collection system, stability is improved:
The cabling number of traditional data acquisition system is linearly increasing as the growth of number of sensors is presented, and this patent can be protected
The cabling number for demonstrate,proving a large amount of sensor arrays is similar with the cabling number of single sensor, reduces wiring difficulty, it is steady to improve system
It is qualitative.
2. reducing the demand number of Analog-digital Converter interface, cost is reduced:
Required Analog-digital Converter interface is acquired as sensor array data, it is with high costs；And even if having simultaneously more
A Analog-digital Converter interface, they are also difficult to read simultaneously, need to switch.The present invention realizes large-scale sensor array still
The daisy chain topology for only needing an Analog-digital Converter interface, substantially reduces system cost.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the schematic diagram that the present invention reads single sensor.
Fig. 3 is the schematic diagram of scanning sensor array of the present invention.
Fig. 4 is the schematic diagram that the present invention reads multiple sensor signal summations.
Figure label and character are as follows:
1, sensor (S)；2, sensor array；3, single-pole single-throw switch (SPST) (SW)；4, Digital Logical Circuits (Logic)；5,
System on a ship chip (SoC)；6, electric wire ground terminal (GND)；7, analog-digital converter (ADC)；8, numeral input/output connects
Connection interface (Digital IO).
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 1, the present invention provides a kind of sensor array data acquisition system based on daisy topology, including
By being no less than the sensor array 2 that two sensors 1 form, single-pole single-throw switch (SPST) 3, Digital Logical Circuits 4 and with mould
The system on a ship chip 5 of number converter 7, each sensor 1 on the sensor array 2 is respectively with one with control
The single-pole single-throw switch (SPST) 3 of device processed is connected, and the controller of the single-pole single-throw switch (SPST) 3 is Digital Logical Circuits 4；Each sensor 1 exists
The electric wire ground terminal of the system on a ship chip 5 with analog-digital converter is interconnected and is ultimately connected on the pin of side
6, the other side pin of each sensor 1 is connected on the side pin of corresponding single-pole single-throw switch (SPST) 3, and each single-pole single-throw(SPST is opened
The other side pin of pass 3 interconnects and is ultimately connected to the modulus of the system on a ship chip 5 with analog-digital converter
In transducer ports 7；Controller, that is, Digital Logical Circuits 4 of each single-pole single-throw switch (SPST) 3 interconnects and is ultimately connected to band
Have in numeral input/output connecting interface 8 of the system on a ship chip 5 of analog-digital converter 7.
The sensor 1 be pressure sensor, be specifically as follows piezoelectric pressure indicator, piezoresistive pressure sensor,
Accelerometer formula pressure sensor, capacitance pressure transducer, gas-pressure type pressure sensor, electrochemical sensor, temperature sensing
Device and/or optical sensor.The sensor array 2 is row, column, matrix and/or multichain arrangement.
The system on a ship chip 5 with analog-digital converter includes data processing and transmission module.
Sensor array data acquisition system based on daisy topology of the invention, sensor array 2 are by multiple only
Vertical pressure or other sensors 1 form；Integrated circuit can read the data of some sensor 1 and quickly scan full battle array
The data of column, and pass through low-power dissipation system grade integrated circuit and carry out data acquisition, store and transmit.
By numeral input/output port of system on a ship chip 5, opening for some or certain sensors is controlled
It closes, then passes through the port of its analog-digital converter 7, read the data of the sensor be currently connected.If sharing N number of sensor, need
The data of n-th of sensor are read, switch n can be connected, obtain reading a, the reading of such sensor n is exactly a.If needed
The sum of the data of multiple sensors are read, the switch of multiple sensors can directly be connected, read data rapidly.Such chrysanthemum
The array connection methods of pattern chain topological structure, can be by being connected switch N, switch N-1 ..., the method for switch 1, scanning one by one
The reading of all the sensors in array, step is simple, and data are accurate.In this way in the case where not influencing performance, cabling is realized most
Simplify, improves the stability of system.
Present invention can apply to the array systems of 2 multiple sensors of any of the above；If system-level integrated chip has multiple
Analog-digital converter, each analog-digital converter can be connect with a this system.In addition, coming to those of ordinary skill in the art
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to right appended by the present invention
It is required that protection scope.
Embodiment 1
As shown in Figures 2 and 3, the sensor array 2 is made of 4 sensors 1, and sensor 1 is all made of piezoelectric sensing
Device.System on a ship chip 5 is configured by control circuit of the numeral input/output interface to sensor 1, is realized single
The data acquisition of a sensor, multiple sensors or all the sensors stores and transmits.
Fig. 2 is the schematic diagram for reading single sensor.If reading the sensor of S2, it is only necessary to the switch of S2 is connected,
It keeps other switches to open, obtains ADC reading, it is assumed that be a, the as data of S2.
Fig. 3 is the schematic diagram for reading all the sensors.The switch for first turning on S1 opens other switches, obtains ADC reading
Number, the as data of S1；The switch that S2 is connected, opens other switches, obtains ADC reading, the as data of S2；Conducting S3's opens
It closes, opens other switches, obtain ADC reading, the as data of S3；The switch that S4 is connected, opens other switches, obtains ADC reading
Number, the as data of S4.
Fig. 4 is the schematic diagram for reading multiple sensor signal summations.If it is desired to the signal for reading S1, S2, S4 sensor is total
With, the corresponding switch of S1, S2, S4 can be connected, open other switches, obtain ADC and read, the letter of as selected multiple sensors
Number summation.
Although describing here by some or certain particular arrangements and illustrating the present invention, purpose does not simultaneously lie in limit
The details is made, because may have various modifications and structure change within the scope of patent requirements, without departing from spirit.
The present invention relates to be partially the same as those in the prior art or can be realized by using the prior art.
Claims (5)
1. a kind of sensor array data acquisition system based on daisy topology, it is characterised in that include by being no less than two
Sensor (1) composition sensor array (2), single-pole single-throw switch (SPST) (3), Digital Logical Circuits (4) and have analog-to-digital conversion
The system on a ship chip (5) of device (7), each sensor (1) on the sensor array (2) respectively have with one
The single-pole single-throw switch (SPST) (3) of controller is connected, and the controller of the single-pole single-throw switch (SPST) (3) is Digital Logical Circuits (4)；It is each to pass
Sensor (1) interconnects on the pin of side and is ultimately connected to the system on a ship chip (5) with analog-digital converter
Electric wire ground terminal (6), the other side pin of each sensor (1) is connected to the side of corresponding single-pole single-throw switch (SPST) (3)
On pin, the other side pin of each single-pole single-throw switch (SPST) (3) interconnects and is ultimately connected to the system with analog-digital converter
On the port of the analog-digital converter (7) of grade IC chip (5)；Controller, that is, number of each single-pole single-throw switch (SPST) (3) is patrolled
Volume circuit (4) interconnect and be ultimately connected to the numeral input of the system on a ship chip (5) with analog-digital converter/
It exports on connecting interface (8).
2. a kind of sensor array data acquisition system based on daisy topology as described in claim 1, it is characterised in that
The sensor (1) is pressure sensor.
3. a kind of sensor array data acquisition system based on daisy topology as described in claim 1, it is characterised in that
The sensor (1) is piezoelectric pressure indicator, piezoresistive pressure sensor, accelerometer formula pressure sensor, condenser type
Pressure sensor, gas-pressure type pressure sensor, electrochemical sensor, temperature sensor and/or optical sensor.
4. a kind of sensor array data acquisition system based on daisy topology as described in claim 1, it is characterised in that
The sensor array (2) is row, column, matrix and/or multichain arrangement.
5. a kind of sensor array data acquisition system based on daisy topology as described in claim 1, it is characterised in that
The system on a ship chip (5) with analog-digital converter includes data processing and transmission module.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110403608A (en) * | 2019-07-11 | 2019-11-05 | 赵超 | A kind of the fetus fetal activity monitoring system and monitoring method of super low-power consumption auto sleep and wake-up |
| CN112472042A (en) * | 2020-11-06 | 2021-03-12 | 无锡闻心电子科技有限责任公司 | Wearable human body characteristic acquisition device, detection device and detection underwear |
| CN117357125A (en) * | 2023-02-28 | 2024-01-09 | 中山大学 | Emotion map generation device and method based on high-density body surface potential mapping technology |
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| CN107631818A (en) * | 2016-07-19 | 2018-01-26 | 中国科学院沈阳自动化研究所 | Flexible array pressure measurement sensor and its measuring method based on piezoresistive effect |
| CN207215278U (en) * | 2017-05-18 | 2018-04-10 | 东莞中子科学中心 | A kind of rotation formula vibration acquisition system and its rotation formula censor key |
| CN108618786A (en) * | 2018-07-06 | 2018-10-09 | 赵超 | A kind of fetal monitoring and sleep of pregnant woman respiratory monitoring system based on array of pressure sensors |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741655A (en) * | 2016-05-08 | 2016-07-06 | 商洛学院 | Sensor integrated demonstration instrument |
| CN107631818A (en) * | 2016-07-19 | 2018-01-26 | 中国科学院沈阳自动化研究所 | Flexible array pressure measurement sensor and its measuring method based on piezoresistive effect |
| CN207215278U (en) * | 2017-05-18 | 2018-04-10 | 东莞中子科学中心 | A kind of rotation formula vibration acquisition system and its rotation formula censor key |
| CN108618786A (en) * | 2018-07-06 | 2018-10-09 | 赵超 | A kind of fetal monitoring and sleep of pregnant woman respiratory monitoring system based on array of pressure sensors |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110403608A (en) * | 2019-07-11 | 2019-11-05 | 赵超 | A kind of the fetus fetal activity monitoring system and monitoring method of super low-power consumption auto sleep and wake-up |
| CN112472042A (en) * | 2020-11-06 | 2021-03-12 | 无锡闻心电子科技有限责任公司 | Wearable human body characteristic acquisition device, detection device and detection underwear |
| CN112472042B (en) * | 2020-11-06 | 2024-05-10 | 无锡闻心电子科技有限责任公司 | Wearable human body characteristic acquisition device, detection device and detection underwear |
| CN117357125A (en) * | 2023-02-28 | 2024-01-09 | 中山大学 | Emotion map generation device and method based on high-density body surface potential mapping technology |
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