CN209264014U - A kind of digital-to-analogue synchronism output sensor - Google Patents
A kind of digital-to-analogue synchronism output sensor Download PDFInfo
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- CN209264014U CN209264014U CN201821925435.7U CN201821925435U CN209264014U CN 209264014 U CN209264014 U CN 209264014U CN 201821925435 U CN201821925435 U CN 201821925435U CN 209264014 U CN209264014 U CN 209264014U
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Abstract
The utility model discloses a kind of digital-to-analogue synchronism output sensors, including digital sensing unit, processing unit, digital output unit, analog output unit and power supply unit；The number sensing unit, digital output unit, analog output unit and power supply unit are connect with the processing unit；The number sensing unit is for obtaining environmental data and being supplied to the processing unit in the form of digital quantity；The processing unit is for exporting the environmental data to digital output unit and analog output unit；The digital output unit is used to export the environmental data in the form of digital quantity；After the analog output unit is used to the environmental data carrying out digital-to-analogue conversion, the environmental data is exported in the form of analog quantity；Said supply unit is used to power for the processing unit and the analog output unit.Good with data output synchronism, structure is simple, low power consumption and other advantages.
Description
Technical field
The utility model relates to sensor technical field more particularly to a kind of digital-to-analogue synchronism output sensors.
Background technique
The sensor of measurement temperature, humidity, pressure is traditionally used for frequently with two independent probes, Temperature Humidity Sensor
And pressure sensor.Disadvantage is that Temperature Humidity Sensor is generally digital quantity or analog signals output, pressure pass
Sensor is generally analog signals output, and single-chip microcontroller need to could read Temperature Humidity Sensor, pressure sensor by A/D conversion
Analog signals, so circuit is complicated, measurement accuracy is low, poor anti jamming capability, and power consumption is high, seriously affects Temperature Humidity Sensor temperature
Spend the accuracy of measurement.Sensor also uses three platinum resistance, Temperature Humidity Sensor and pressure sensor independent probes, uses
Platinum resistance replaces the temperature and humidity measurement of Temperature Humidity Sensor, increases the complexity of A/D conversion circuit in this way, makes entire sensor
Volume is larger.
Utility model content
The technical problems to be solved in the utility model is that for technical problem of the existing technology, this is practical new
Type provides that a kind of data output synchronism is good, and structure is simple, the digital-to-analogue synchronism output sensor that low energy consumption.
In order to solve the above technical problems, the utility model proposes technical solution are as follows: a kind of digital-to-analogue synchronism output sensor,
Including digital sensing unit, processing unit, digital output unit, analog output unit and power supply unit；
The number sensing unit, digital output unit, analog output unit and power supply unit with the processing
Unit connection；
The number sensing unit is for obtaining environmental data and being supplied to the processing unit in the form of digital quantity；
The processing unit is for exporting the environmental data to digital output unit and analog output unit；
The digital output unit is used to export the environmental data in the form of digital quantity；
After the analog output unit is used to the environmental data carrying out digital-to-analogue conversion, institute is exported in the form of analog quantity
State environmental data；
Said supply unit is used to power for the processing unit and the analog output unit.
Further, with the connection of RS422 interface between the digital sensing unit and the processing unit；The processing is single
It is first to be connected between the digital output unit with RS422 interface.
Further, the digital sensing unit includes at least one sensitive core body；The sensitive core body includes temperature sensitive core
Body, and/or wet sensitive core, and/or pressure-sensitive core.
Further, the temperature sensitive core is that 12 I2C digital signals export core；The temperature sensitive core is 14 I2C
Digital signal exports core；The pressure-sensitive core is that 24 I2C digital signals export core.
Further, the analog output unit includes at least D/A converting circuit all the way, for by the environment number
According to being converted to analog output.
Further, said supply unit includes at least one intelligently voltage boosting circuit, and the intelligently voltage boosting circuit is for being
The D/A converting circuit power supply.
Further, the number of the D/A converting circuit, the number of the sensitive core body, the intelligently voltage boosting circuit
Quantity is consistent.
Further, said supply unit includes two-way DC-DC reducing transformer, for external power supply to be converted to 2 tunnels difference
The power supply of D/A converting circuit described in voltage.
Further, the D/A converting circuit exports 4mA to 20mA current-mode analog quantity.
Further, the processing unit is also used to the environmental data inputted from the digital sensing unit being converted to mark
Quasi- physical quantity exports after packing to digital output unit and analog output unit.
Compared with the prior art, the advantages of the utility model are:
1, the utility model acquires environmental data using digital sensing unit, then by processing unit that environment collected is defeated
It is exported out by digital output unit and module amount output unit, net synchronization capability is good, and structure is simple.
2, the utility model can configure the number amount and type of sensitive core body as needed, can measure pressure, temperature simultaneously
And humidity, analog output unit is according to the D/A converting circuit of the corresponding number of quantity configuration of sensitive core body, and by having
The intelligently voltage boosting circuit of intelligently voltage boosting function is powered, can be according to load resistance and output size of current dynamic regulation internal current
The supply voltage of output circuit simplifies the circuit structure of analog output unit, also reduces energy consumption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model specific embodiment.
Fig. 2 is the structural schematic diagram of the analog output unit of the utility model specific embodiment.
Specific embodiment
The utility model is further described below in conjunction with Figure of description and specific preferred embodiment, but not because
This and limit the protection scope of the utility model.
As shown in Figure 1, the digital-to-analogue synchronism output sensor of the present embodiment, including digital sensing unit, processing unit, number
Measure output unit, analog output unit and power supply unit；Digital sensing unit, digital output unit, analog output list
Member and power supply unit are connect with processing unit；Digital sensing unit is for obtaining environmental data and being supplied in the form of digital quantity
Processing unit；Processing unit is for exporting environmental data to digital output unit and analog output unit；Digital quantity is defeated
Unit is used for the output environment data in the form of digital quantity out；Analog output unit is used to environmental data carrying out digital-to-analogue conversion
Afterwards, the output environment data in the form of analog quantity；Power supply unit is used to power for processing unit and analog output unit.
In the present embodiment, with the connection of RS422 interface between digital sensing unit and processing unit；Processing unit and number
It measures between output unit with the connection of RS422 interface.Digital sensing unit includes at least one sensitive core body；Sensitive core body includes temperature
Quick core, and/or wet sensitive core, and/or pressure-sensitive core.As shown in Figure 1, the sensor of the present embodiment includes simultaneously one temperature sensitive
Core, a wet sensitive core and a pressure-sensitive core.According under the control of processing unit, (such as single-chip microcontroller provides each sensitive core body
Frequency signal) according to the sample frequency (such as 1Hz, i.e., sampling per second are primary) of setting acquire environmental data in turn, and will be respectively
The data that sampling obtains are input to processing unit from RS422 interface in the form of data volume.
In the present embodiment, temperature sensitive core is that 12 I2C digital signals export core；Temperature sensitive core is 14 I2C number letters
Number output core；Pressure-sensitive core is that 24 I2C digital signals export core.Processing unit is super low power consuming single chip processor.Processing is single
Member is also used to the environmental data inputted from digital sensing unit being converted to standard physical amount, exports after packing to digital output
Unit and analog output unit.It is respectively that three sensitive core bodies are provided with data register in the present embodiment, in processing unit,
Three sensitive core bodies acquire environmental data in turn, and are uploaded in the corresponding registers of processing unit respectively, and processing unit is by three
After data in a register carry out the conversion of standard physical amount, resynchronisation exports the data in three registers.This reality
It applies to be packaged in example and the data in three registers is exported according to the format of setting.
In the present embodiment, as shown in Fig. 2, analog output unit includes at least D/A converting circuit all the way, for will
Environmental data is converted to analog output.Power supply unit includes at least one intelligently voltage boosting circuit, and intelligently voltage boosting circuit is for being
D/A converting circuit power supply.Number, the number of sensitive core body, the quantity of intelligently voltage boosting circuit of D/A converting circuit are consistent.For
Electric unit includes two-way DC-DC reducing transformer, for external power supply to be converted to the power supply of 2 tunnel different voltages D/A converting circuits.Number
Analog conversion circuit exports 4mA to 20mA current-mode analog quantity.
In the present embodiment, the external 28V DC power supply of power supply unit, and 3.3V is converted to, tri- kinds of different confessions of 5V and 10V
Piezoelectric voltage, wherein 3.3V is that processing unit and sensitive core body are powered, and 5V and 10V are analog output unit power supply.Power supply unit
28V voltage drop is supplied to analog output unit down to 5V and 10V by the way of two-way DA-DA decompression, and is every road
D/A converting circuit is configured with intelligently voltage boosting circuit, and existing intelligently voltage boosting device, intelligently voltage boosting can be used in intelligently voltage boosting circuit
Circuit it is defeated can to reduce electric current according to the supply voltage of load resistance and output size of current dynamic regulation internal current output circuit
Part power consumption has the function of intelligently voltage boosting, it can be achieved that digital-to-analogue turns device circuit out.
In the present embodiment, analog output unit can according to need the digital-to-analogue conversion that selection has corresponding conversion number
Device (D/A converter) is connected between digital analog converter and processing unit by SPI interface, and processing unit is by pressure, temperature and wet
For degree according to corresponding No. three conversion circuit in digital analog converter is sent to, the current-mode analog quantity for being converted to 3 road 4mA to 20mA is defeated
Out.
Sensor in the present embodiment with pressure-sensitive core, wet sensitive core and temperature sensitive core (is pressed in normal working conditions
Power 110kPa, 25 DEG C of temperature, humidity 50%), power consumption is only 0.5W, adds 3 independent 4mA relative to traditional DAC conversion circuit
The sensor of~20mA electric current conversion chip circuit, power consumption 1.2W can significantly reduce power consumption, can also effectively drop
Influence of the fever of low sensor body to humidity precision.
The preferred embodiment of above-mentioned only the utility model, does not impose any limitation on the present invention.Though
So the utility model has been disclosed with preferred embodiment as above, however is not intended to limit the utility model.Therefore, it is all without departing from
The content of technical solutions of the utility model any is simply repaired according to the utility model technical spirit is made to the above embodiment
Change, equivalent variations and modification, should all fall in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of digital-to-analogue synchronism output sensor, it is characterised in that: including digital sensing unit, processing unit, digital output
Unit, analog output unit and power supply unit；
The number sensing unit, digital output unit, analog output unit and power supply unit with the processing unit
Connection；
The number sensing unit is for obtaining environmental data and being supplied to the processing unit in the form of digital quantity；
The processing unit is for exporting the environmental data to digital output unit and analog output unit；
The digital output unit is used to export the environmental data in the form of digital quantity；
After the analog output unit is used to the environmental data carrying out digital-to-analogue conversion, the ring is exported in the form of analog quantity
Border data；
Said supply unit is used to power for the processing unit and the analog output unit.
2. digital-to-analogue synchronism output sensor according to claim 1, it is characterised in that: it is described number sensing unit with it is described
With the connection of RS422 interface between processing unit；With RS422 interface company between the processing unit and the digital output unit
It connects.
3. digital-to-analogue synchronism output sensor according to claim 2, it is characterised in that: the number sensing unit includes extremely
A few sensitive core body；The sensitive core body includes temperature sensitive core, and/or wet sensitive core, and/or pressure-sensitive core.
4. digital-to-analogue synchronism output sensor according to claim 3, it is characterised in that: the temperature sensitive core is 12 I2C
Digital signal exports core；The temperature sensitive core is that 14 I2C digital signals export core；The pressure-sensitive core is 24 I2C
Digital signal exports core.
5. digital-to-analogue synchronism output sensor according to claim 4, it is characterised in that: the analog output unit includes
At least D/A converting circuit all the way, for the environmental data to be converted to analog output.
6. digital-to-analogue synchronism output sensor according to claim 5, it is characterised in that: said supply unit includes at least one
A intelligently voltage boosting circuit, the intelligently voltage boosting circuit are used to power for the D/A converting circuit.
7. digital-to-analogue synchronism output sensor according to claim 6, it is characterised in that: the road of the D/A converting circuit
The number of several, the described sensitive core body, the quantity of the intelligently voltage boosting circuit are consistent.
8. digital-to-analogue synchronism output sensor according to claim 7, it is characterised in that: said supply unit includes two-way
DC-DC reducing transformer, for external power supply to be converted to the power supply of D/A converting circuit described in 2 tunnel different voltages.
9. digital-to-analogue synchronism output sensor according to claim 8, it is characterised in that: the D/A converting circuit output
4mA is to 20mA current-mode analog quantity.
10. digital-to-analogue synchronism output sensor according to any one of claims 1 to 9, it is characterised in that: the processing unit
It is also used to the environmental data inputted from the digital sensing unit being converted to standard physical amount, be exported after packing defeated to digital quantity
Unit and analog output unit out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821925435.7U CN209264014U (en) | 2018-11-21 | 2018-11-21 | A kind of digital-to-analogue synchronism output sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821925435.7U CN209264014U (en) | 2018-11-21 | 2018-11-21 | A kind of digital-to-analogue synchronism output sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209264014U true CN209264014U (en) | 2019-08-16 |
Family
ID=67555354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821925435.7U Active CN209264014U (en) | 2018-11-21 | 2018-11-21 | A kind of digital-to-analogue synchronism output sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209264014U (en) |
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2018
- 2018-11-21 CN CN201821925435.7U patent/CN209264014U/en active Active
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