CN206161099U - Capacitanc filling level sensor testing arrangement - Google Patents
Capacitanc filling level sensor testing arrangement Download PDFInfo
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- CN206161099U CN206161099U CN201620828545.6U CN201620828545U CN206161099U CN 206161099 U CN206161099 U CN 206161099U CN 201620828545 U CN201620828545 U CN 201620828545U CN 206161099 U CN206161099 U CN 206161099U
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Abstract
The utility model provides a capacitanc filling level sensor testing arrangement, including sensor continuous type signal processing module, self -checking continuous type signal processing module, sensor point type signal processing module, DSP signal processing module, communication module, display module and power module, wherein, sensor continuous type signal processing module self -checking continuous type signal processing module sensor point type signal processing module communication module the display module and power module all connects DSP signal processing module. The utility model discloses simple structure, it is rationally distributed, easily promote, the utility model discloses in each circuit all the chip through prior art, electrical part connect and constitute, realize that the cost is lower.
Description
Technical field
The utility model is related to test system, in particular it relates to a kind of condenser type loading liquid level sensor detector.
Background technology
Liquid level sensor (static pressure liquid level meter/fluid level transmitter/liquid level sensor/level sensor) is a kind of measurement liquid level
Pressure sensor.Static pressure throw-in type liquid transmitter (liquid level gauge) be based on survey the height of fluid pressure and the liquid into than
The principle of example, using external advanced isolated form diffusion silicon-sensitive element or ceramic capacitive pressure sensitive sensor, static pressure is turned
Electric signal is changed to, then through temperature-compensating and linear amendment, changes into standard electric signal (generally 4～20mA/1～5VDC).
Liquid level sensor static pressure throw-in type liquid transmitter (liquid level gauge) is applied to petrochemical industry, metallurgy, electric power, pharmacy, water supply and sewage, ring
The level gauging of the various media of the systems such as guarantor and industry.Exquisite structure, simple adjustment and flexible mounting means are use
Family is easily convenient using providing.
Loading liquid level sensor detector is mainly used in coordinating loading liquid level sensor, realizes the measurement of loading liquid level,
It is to realize one of visual plant that liquid level filling is measured.
Utility model content
For defect of the prior art, the purpose of this utility model is to provide a kind of condenser type loading liquid level sensor and surveys
Trial assembly is put.
According to the condenser type loading liquid level sensor detector that the utility model is provided, including sensor continous way signal
Processing module, self-inspection continous way signal processing module, sensor point type signal processing module, DSP signal processing modules, communication mould
Block, display module and supply module；
Wherein, the sensor continous way signal processing module, the self-inspection continous way signal processing module, the sensing
Device point type signal processing module, the communication module, the display module and the supply module are all connected with the DSP signals
Processing module.
Preferably, the sensor continous way signal processing module includes first interface circuit, the first letter being sequentially connected
Circuit, signal isolation circuit, secondary signal number is followed to follow circuit, signal filter circuit, partial pressure modulate circuit, the first signal pincers
Position circuit；
First signal clamping circuit connects the DSP signal processing modules.
Preferably, the self-inspection continous way signal processing module include second interface circuit, the 3rd signal follow circuit and
Secondary signal clamp circuit；
The secondary signal clamp circuit connects the DSP signal processing modules.
Preferably, the sensor point type signal processing module includes the 3rd interface circuit and partial pressure modulate circuit；
The partial pressure modulate circuit connects the DSP signal processing modules.
Preferably, the DSP signal processing modules adopt the dsp chip of model TMS320F2812 of TI companies.
Preferably, the communication module includes signal conditioning circuit, signal drive circuit and RS422 transmission circuits；
One end of the signal conditioning circuit connects the DSP signal processing modules, and the other end is sequentially connected signal driving
Circuit, RS422 transmission circuits.
Preferably, the display module includes drive circuit, the digital display meter drive circuit of indicator lamp and buzzing；
The indicator lamp and the drive circuit of buzzing, the digital display meter drive circuit connect the DSP signal processing modules.
Preferably, the supply module includes externally fed power supply, power-switching circuit and level shifting circuit；
The externally fed power supply passes sequentially through power-switching circuit, level shifting circuit and connects the DSP signal transactings
Module.
Compared with prior art, the utility model has following beneficial effect：
1st, the utility model simple structure, it is rationally distributed, it is easy to promote；
2nd, each circuit is connected and composed by prior art chip again, electrical part in the utility model, cost of implementation compared with
It is low.
Description of the drawings
By reading the detailed description made to non-limiting example with reference to the following drawings, other spies of the present utility model
Levy, objects and advantages will become more apparent upon：
Fig. 1 is structural representation of the present utility model；
Fig. 2, Fig. 3 show the circuit diagram of sensor continous way signal processing module in the utility model；
Fig. 4 is the circuit diagram of self-inspection continous way signal processing module in the utility model；
Fig. 5 is the circuit diagram of DSP signal processing modules in the utility model；
Fig. 6 is the circuit diagram of communication module in the utility model；
Fig. 7 is the schematic diagram of buzzing and drive circuit of indicator in the utility model；
Fig. 8 is the schematic diagram of digital display meter drive circuit in the utility model；
Fig. 9 is the schematic diagram of level shifting circuit in the utility model；
Figure 10 is the schematic diagram of power-switching circuit in the utility model.
Specific embodiment
The utility model is described in detail with reference to specific embodiment.Following examples will be helpful to this area
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that to ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, some deformations and improvement can also be made.
These belong to protection domain of the present utility model.
In the present embodiment, the condenser type loading liquid level sensor detector that the utility model is provided, including sensor
Continous way signal processing module, self-inspection continous way signal processing module, sensor point type signal processing module, DSP signal transactings
Module, communication module, display module and supply module；
Wherein, at sensor continous way signal processing module, self-inspection continous way signal processing module, sensor point type signal
Reason module, communication module, display module and supply module are all connected with the DSP signal processing modules.
The sensor continous way signal processing module, for input signal to be followed through signal, signal isolation, signal
Export to the AD thief hatch of DSP signal processing modules after filtering, signal conversion, signal clamper.At the self-inspection continous way signal
Reason module, for input signal to be exported the AD thief hatch of DSP signal processing modules through signal with amiable signal clamper.It is described
Sensor point type signal processing module, for the AD that input signal is exported into DSP signal processing modules after voltage transformation
Thief hatch.
Described DSP signal processing modules：Input signal is sampled by dsp chip, and dsp chip is to continous way signal
Carry out being processed and converted to liquid level by GPIO mouths driving digital display meter display liquid level with point type signal, by SCI moulds
Block goes out the data transfer after process.The low and high level of the GPIO mouths output of dsp chip is controlled by the driving of display module
The indicator lamp of front panel processed, buzzing and digital display meter.
The sensor continous way signal processing module includes that the first interface circuit being sequentially connected, the first signal follow electricity
Road, signal isolation circuit, secondary signal follow circuit, signal filter circuit, partial pressure modulate circuit, the first signal clamping circuit；
First signal clamping circuit connects the DSP signal processing modules.
As shown in Fig. 2 realizing that signal is followed by amplifier chip LMC6482, realized continuously by chip I SO122JU
The signal isolation of formula signal.As shown in figure 3, signal is realized with amiable conditioning by two-way amplifier chip LMC6482, by clamper
Diode BAT54S by the input voltage signal clamper of DSP in 0～3.3V, to protect dsp chip in AD thief hatch.
The self-inspection continous way signal processing module includes that second interface circuit, the 3rd signal follow circuit and secondary signal
Clamp circuit；The secondary signal clamp circuit connects the DSP signal processing modules.As shown in figure 4, mainly passing through amplifier
Chip LMC6482 and clamp diode BAT54S carry out analog sensor continous way signal, to realize equipment to sensor continous way
The self-checking function of signal.
The sensor point type signal processing module includes the 3rd interface circuit and partial pressure modulate circuit；The partial pressure conditioning
Circuit connects the DSP signal processing modules.
The DSP signal processing modules adopt the dsp chip of model TMS320F2812 of TI companies.As shown in figure 5,
Dsp chip by AD thief hatch gather 4 tunnel continous way liquid level sensors and 8 waypoint formula liquid level sensors output signal, after will
The signal filtering of collection and by continous way signal be converted to corresponding liquid level and point type signal be converted to it is corresponding in storage tank
Filling point position, is then sent the data demand after process by SCI modules.And the number of front panel is controlled by GPIO mouths
Aobvious table shows liquid level, control front panel indicator lamp and buzzing reacting filling point position.
The communication module includes signal conditioning circuit, signal drive circuit and RS422 transmission circuits；The signal condition
One end of circuit connects the DSP signal processing modules, and the other end is sequentially connected signal drive circuit, RS422 transmission circuits.Such as
Shown in Fig. 6,6N137 chips realize the driving for communicating by MAX485ESA carrying out conditioning amplification to signal.
The display module includes drive circuit, the digital display meter drive circuit of indicator lamp and buzzing；The indicator lamp and honeybee
The drive circuit of ring, the digital display meter drive circuit connect the DSP signal processing modules.As shown in fig. 7, buzzing and indicator lamp
The amplification of signal is realized in drive circuit by chip SN74ALVC164245, then is realized by driving chip ULN2803A
The indicator lamp of signal front panel and the driving of buzzing.As shown in figure 8, the drive circuit of digital display meter mainly passes through
SN74ALVC164245 drives the function of digital display meter come the GPIO mouths for realizing DSP.
The supply module includes externally fed power supply, power-switching circuit and level shifting circuit；
The externally fed power supply passes sequentially through power-switching circuit, level shifting circuit and connects the DSP signal transactings
Module.Supply module, powers for supplying electricity to dsp chip by externally fed power supply, by model TPS767D301 level
5V is converted into conversion chip into 3.3V and 1.8V is powered.As shown in figure 9, level shifting circuit mainly passes through voltage chips
TPS767D301 realizes that the DSP in circuit board powers realizing the conversion of the level of 5V to 3.3V and 1.8V.As shown in Figure 10,
Power-switching circuit mainly by B05058-2W to realize circuit board in 5V power supply signals isolation, the power supply after isolation is used for
Power respectively to data signal and analog signal.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can within the scope of the claims make various modifications or modification,
This has no effect on flesh and blood of the present utility model.
Claims (8)
1. a kind of condenser type loading liquid level sensor detector, it is characterised in that including sensor continous way signal transacting mould
It is block, self-inspection continous way signal processing module, sensor point type signal processing module, DSP signal processing modules, communication module, aobvious
Show module and supply module；
Wherein, the sensor continous way signal processing module, the self-inspection continous way signal processing module, the sensor points
Formula signal processing module, the communication module, the display module and the supply module are all connected with the DSP signal transactings
Module.
2. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the sensor connects
Continuous formula signal processing module include the first interface circuit that is sequentially connected, the first signal follow circuit, signal isolation circuit, second
Signal follows circuit, signal filter circuit, partial pressure modulate circuit, the first signal clamping circuit；
First signal clamping circuit connects the DSP signal processing modules.
3. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the self-inspection is continuous
Formula signal processing module includes that second interface circuit, the 3rd signal follow circuit and secondary signal clamp circuit；
The secondary signal clamp circuit connects the DSP signal processing modules.
4. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the sensor points
Formula signal processing module includes the 3rd interface circuit and partial pressure modulate circuit；
The partial pressure modulate circuit connects the DSP signal processing modules.
5. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the DSP signals
Processing module adopts the dsp chip of model TMS320F2812 of TI companies.
6. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the communication module
Including signal conditioning circuit, signal drive circuit and RS422 transmission circuits；
One end of the signal conditioning circuit connects the DSP signal processing modules, the other end be sequentially connected signal drive circuit,
RS422 transmission circuits.
7. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the display module
Including indicator lamp and the drive circuit of buzzing, digital display meter drive circuit；
The indicator lamp and the drive circuit of buzzing, the digital display meter drive circuit connect the DSP signal processing modules.
8. condenser type loading liquid level sensor detector according to claim 1, it is characterised in that the supply module
Including externally fed power supply, power-switching circuit and level shifting circuit；
The externally fed power supply passes sequentially through power-switching circuit, level shifting circuit and connects the DSP signal processing modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620828545.6U CN206161099U (en) | 2016-08-01 | 2016-08-01 | Capacitanc filling level sensor testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620828545.6U CN206161099U (en) | 2016-08-01 | 2016-08-01 | Capacitanc filling level sensor testing arrangement |
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| Publication Number | Publication Date |
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| CN206161099U true CN206161099U (en) | 2017-05-10 |
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ID=58646361
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620828545.6U Active CN206161099U (en) | 2016-08-01 | 2016-08-01 | Capacitanc filling level sensor testing arrangement |
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| Country | Link |
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| CN (1) | CN206161099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824222A (en) * | 2018-08-08 | 2020-02-21 | 比亚迪汽车工业有限公司 | Signal sampling method and system and vehicle |
-
2016
- 2016-08-01 CN CN201620828545.6U patent/CN206161099U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824222A (en) * | 2018-08-08 | 2020-02-21 | 比亚迪汽车工业有限公司 | Signal sampling method and system and vehicle |
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