CN202562563U - Sewage level measurement sensor for mine - Google Patents
Sewage level measurement sensor for mine Download PDFInfo
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- CN202562563U CN202562563U CN2012202087862U CN201220208786U CN202562563U CN 202562563 U CN202562563 U CN 202562563U CN 2012202087862 U CN2012202087862 U CN 2012202087862U CN 201220208786 U CN201220208786 U CN 201220208786U CN 202562563 U CN202562563 U CN 202562563U
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Abstract
The utility model discloses a sewage level measurement sensor, and relates to a downhole sewage level measuring device, in particular to the sewage level measurement sensor for a mine. The sewage level measurement sensor for the mine solves the problem that errors are prone to occur when sewage level measurement sensors for mines in the prior art are used in special underground environments. The sensor comprises a sensor box body, a sensor probe, an electric cable and an infrared remote controller, wherein the electric cable is connected in the sensor box body, and a capacity signal measuring circuit, a single chip computer, a power protecting-switching circuit, an operation circuit and an output display circuit are arranged in the sensor box body. The sensor probe is connected to the capacity signal measuring circuit in the sensor box body. The sewage level measurement sensor for the mine has the advantages of being high in precision, good in linearity, stable in data collection, accurate in measurement, and good in sealing and anti-corrosion property. Type of protection of the sensor is essentially safe for the mine, and the sensor is applied to explosion environment of coal mines.
Description
Technical field
The utility model relates to down-hole wastewater level measurement mechanism, is specially a kind of mining wastewater level survey sensor.
Background technology
Along with improving constantly of robotization water discharge technology under the coal mine, people have proposed requirements at the higher level to the degree of accuracy that the down-hole wastewater level is measured gradually.
The sensor of traditional measurement water level has level sensor, the ultrasonic type level sensor that adopts throw-in type pressure reduction principle.The level sensor of throw-in type pressure reduction principle belongs to the static pressure level gauging, and promptly in the liquid medium, the pressure that some degree of depth produce is exactly that the weight of the above medium self of measurement point produces; It is directly proportional with density of medium and local acceleration of gravity; Reflected the proportionate relationship between them through formula P=ρ GH, wherein P is a pressure, and ρ is a Media density; G is an acceleration of gravity, and H is the degree of depth of measurement point.Being characterized as of this traditional water level sensor: must be provided with pressure port in bottom of device and experience pressure reduction, when running into the relatively poor situation of mud or water quality, thereby pressure port can take place to stop up and causes measuring error, therefore can't be applicable to down-hole wastewater level monitoring.
The ultrasonic type level sensor is the ultrasound wave that sends through the detecting self signal conversion liquid level position after by the liquid level reflection.This sensor do not have directly with medium contact, corrosion resistance is strong, precision is higher, simple installation; That the gas componant that shortcoming is to cost an arm and a leg, ultrasound wave receives transmission medium influences is big, receptor geometry properties influence is bigger; Be not suitable for the medium that bubble or suspension are arranged; And the problem that receives Electromagnetic Interference easily, the mounting condition and the environmental restraint of ultrasonic type level sensor are bigger simultaneously, can cause measuring error under the situation that especially dust is big under the coal mine.
Be not suitable in the middle of environment measures with the institute complicated down-hole wastewater level of the liquid medium of surveying just because of existing level measuring sensor device commonly used, the utility model spy is directed against the shortcoming of above-mentioned level measuring sensor and studies and design.Capacitance level transducer is the height that utilizes capacitance variation measurement liquid level between the electric capacity two-plate after deliberation; Capacitance level transducer has volume little, easy realization teletransmission and adjusting, is applicable to have corrosivity and sewage environment; Mine water has electric conductivity and specific inductive capacity is basicly stable, therefore is fit to very much this principle of utilization and measures.
Summary of the invention
The utility model is used for the problem that measuring error appears in down-hole particular surroundings easily in order to solve existing level measuring sensor, and a kind of mining wastewater level survey sensor is provided.
The utility model is concrete to adopt following technical scheme to realize: a kind of mining wastewater level survey sensor; Comprise sensor casing, sensor probe, cable and IR remote controller; Cable inserts the sensor casing, and sensor casing inside is provided with capacitance signal metering circuit, single-chip microcomputer, power protection and change-over circuit, function circuit and output display circuit; Sensor probe connects the capacitance signal metering circuit in the sensor casing;
The capacitance signal metering circuit comprises the low-pass filter circuit that the change-over circuit of accomplishing capacitance signal and converting voltage signal into, the amplifying circuit of accomplishing the signal power amplification and inhibition power frequency are disturbed;
Power protecting circuit comprises electric power polarity identification circuit and mu balanced circuit;
Function circuit comprises the infrared remote controller be made up of infrared transtation mission circuit and infrared receiving circuit, be used to accomplish the key circuit of adjustment at zero point, full scale adjustment and range ability adjustment, accomplish the system in case of system halt self-starting watchdog circuit, be used to realize manual automatically reset reset circuit.
The output display circuit comprises digital display circuit, frequency output circuit and sound light alarming circuit.
The utility model adopts capacitance level transducer; Select for use the teflon cable to gather capacitance signal; Utilize singlechip chip to carry out data processing and control, singlechip chip and acquisition process circuit all are arranged in the sensor casing, finally realize the accurate measurement of water level value.
Said capacitance signal metering circuit is used for the variation of wastewater level under the coal mine is converted into the conversion of capacitance; Rely on sensor probe monitoring capacitance variations; And convert capacitance signal into voltage signal through change-over circuit wherein; Voltage signal carries out power amplification after low-pass filter circuit carries out LPF through amplifying circuit, and final output signal is gathered through A/D and sent into single-chip microcomputer, accomplishes computing by single-chip microcomputer.Said sensor probe is connected to form by counterweight and the special of teflon cable, is specially a utmost point and the counterweight conducting of teflon cable, another utmost point insulation.Said counterweight is processed by stainless steel material; Said teflon cable should be coaxial cable structure.When counterweight and teflon cable connected, counterweight and cable inlead end Ying Yushui did quarantine measures, can adopt sealing gasket and epoxy sealing.
Said power protection and change-over circuit realize that mainly protection to error-polarity connection of power supply and the voltage stabilizing of 18V intrinsic safety electric source are to 5V and 3.3V, for related elements work provides power supply; Infrared remote controller in the said function circuit comprises that mainly infrared transtation mission circuit and infrared receiving circuit and IR remote controller are used non-contact control and the parameter adjustment work accomplished; Key circuit is mainly accomplished adjustment at zero point, full scale adjustment, range ability adjustment; Watchdog circuit is mainly accomplished the self-starting of system in case of system halt; Reset circuit is mainly realized manually automatically reseting of system; Digital display circuit in the output display circuit comprises charactron, mainly accomplishes the real-time demonstration and the parameter adjustment information of down-hole wastewater level value; The frequency output circuit is mainly accomplished the output signal with 200 ~ 1000Hz frequency output and have the corresponding driving ability; Sound light alarming circuit is mainly reported to the police with the height water level abnormality.
Compared with prior art, a kind of mining wastewater level survey sensor that the utility model provides has the precision height, good linearity, and image data is stable, measures accurately, and has good sealing and antiseptic property.This device adopts new single chip microcomputer-based intelligent control technology, also has advantages such as working stability, Overall Power Consumption are little, long service life, and its type of protection [of an electrical apparatus for explosive atmospheres is the mining intrinsic safety type, is suitable for using in the explosion of coal mines environment.
Description of drawings
Fig. 1 is the system principle diagram of the said a kind of mining wastewater level survey sensor of the utility model;
Fig. 2 is the structural representation of the said a kind of mining wastewater level survey sensor of the utility model;
Fig. 3 is the said sensor casing of the utility model inner structure synoptic diagram figure.
Embodiment
A kind of mining wastewater level survey sensor; Comprise sensor casing, sensor probe, cable and IR remote controller; Cable inserts the sensor casing; Sensor casing inside is provided with capacitance signal metering circuit, single-chip microcomputer, power protection and change-over circuit, function circuit and output display circuit, and sensor probe connects the capacitance signal metering circuit in the sensor casing;
The capacitance signal metering circuit comprises the low-pass filter circuit that the change-over circuit of accomplishing capacitance signal and converting voltage signal into, the amplifying circuit of accomplishing the signal power amplification and inhibition power frequency are disturbed;
Power protecting circuit comprises electric power polarity identification circuit and mu balanced circuit;
Function circuit comprises the infrared remote controller be made up of infrared transtation mission circuit and infrared receiving circuit, be used to accomplish the key circuit of adjustment at zero point, full scale adjustment and range ability adjustment, accomplish the system in case of system halt self-starting watchdog circuit, be used to realize manual automatically reset reset circuit.
The output display circuit comprises digital display circuit, frequency output circuit and sound light alarming circuit.
The utility model adopts capacitance level transducer; Select for use the teflon cable to gather capacitance signal; Utilize singlechip chip to carry out data processing and control, singlechip chip and acquisition process circuit all are arranged in the sensor casing, finally realize the accurate measurement of water level value.
As shown in Figure 1; Said capacitance signal metering circuit is used for the variation of wastewater level under the coal mine is converted into the conversion of capacitance; Rely on sensor probe monitoring capacitance variations, and convert capacitance signal into voltage signal through change-over circuit wherein, voltage signal carries out power amplification after low-pass filter circuit carries out LPF through amplifying circuit; Final output signal is gathered through A/D and is sent into single-chip microcomputer, accomplishes computing by single-chip microcomputer.Said sensor probe is connected to form by counterweight and the special of teflon cable, is specially a utmost point and the counterweight conducting of teflon cable, another utmost point insulation.Said counterweight is processed by stainless steel material; Said teflon cable should be coaxial cable structure.When counterweight and teflon cable connected, counterweight and cable inlead end Ying Yushui did quarantine measures, can adopt sealing gasket and epoxy sealing.
Said single-chip microcomputer is selected the MSP430 single-chip microcomputer for use.
Said power protection and change-over circuit realize that mainly protection to error-polarity connection of power supply and the voltage stabilizing of 18V intrinsic safety electric source are to 5V and 3.3V, for related elements work provides power supply; Infrared remote controller in the said function circuit comprises that mainly infrared transtation mission circuit and infrared receiving circuit and IR remote controller are used non-contact control and the parameter adjustment work accomplished; Key circuit is mainly accomplished adjustment at zero point, full scale adjustment, range ability adjustment; Watchdog circuit adopts the X25045 chip, mainly accomplishes the self-starting of system in case of system halt; Reset circuit is mainly realized manually automatically reseting of system; Digital display circuit in the output display circuit comprises charactron, mainly accomplishes the real-time demonstration and the parameter adjustment information of down-hole wastewater level value; The frequency output circuit is mainly accomplished the output signal with 200 ~ 1000Hz frequency output and have the corresponding driving ability; Sound light alarming circuit is mainly reported to the police with the height water level abnormality.
As shown in Figure 2; The sensor probe of the utility model is made up of teflon cable 4 and counterweight 5, puts into testing liquid, according to the size of electric capacity and the proportional relation of height of liquid level; Convert height of water level into capacitance through special teflon cable 4; Convert capacitance to faint electric signal through the capacitance signal metering circuit, faint electric signal is delivered to the A/D acquisition module after through amplifying circuit, low-pass filter circuit amplification filtering, pass through the single-chip microcomputer calculation process at last after; The liquid level of output shows with charactron, exports correspondent frequency output signal simultaneously.System has also designed power protection and change-over circuit, and this circuit input 18V intrinsic safety electric source is through the electric power polarity identification circuit; Prevent the short circuit accident that mis-wired causes; Pass through the one-level voltage stabilizing again to 12V, the secondary voltage stabilizing is to 5V, and three grades of voltage stabilizings are to 3.3V; Preceding two-stage voltage stabilizing is mainly solution single-stage linear voltage stabilization and causes too high problem of temperature rise and electric capacity treatment circuit signal power source problem, and third level voltage stabilizing output 3.3V supplies low-power consumption MSP430 single-chip microcomputer and peripheral circuit work thereof.This apparatus system has designed watchdog circuit, adopts peripheral chip X25045 to realize, reset circuit adopts external key to realize, the information of transfiniting has been designed the sound light alarming circuit realization, and designed infrared remote controller, realizes external parameter adjustment and control.
Utilize single-chip microcomputer to carry the PWM production method according to output semaphore request under the coal mine, designed 200 ~ 1000Hz output circuit, adopt the triode power amplification to realize remote data transmission.When transmission cable list core sectional area is not less than 1.5mm
2The time, the level measuring sensor should be not less than 2km to the transmission range between the substation, and supply voltage is DC12V～24V.This device has 4 charactron Presentation Functions.First charactron is function code from left to right, and back three show level value.IR remote controller converts various key commands to serial infrared light coded signal and sends, and infrared remote controller converts serial infrared light coded signal to serial electric signal and send single-chip microcomputer to handle, and accomplishes various functions.Telepilot is aimed at receive window, effectively regulating in distance and the angular range.
As shown in Figure 2; After sensor is fixing; Signal cable 1 and input intrinsic safety electric source 2 are introduced into the terminals in Sensor box 3 bodies through the loudspeaker mouth and fix, and the sensor probe of bottom (teflon cable 4 and counterweight 5) stretches into testing liquid, is carved with scale on the teflon cable 4; The degree of depth that relies on teflon cable 4 to get in the water induces different capacitances, and its length is for measuring active zone.
As shown in Figure 3, can adjust through button and potentiometer through the bonnet of opening the sensor casing the utility model adjustment, S1 is a reset key; S2 is the adjustment at zero point, and S3 is the full scale adjustment, and S4 is the range ability adjustment; S+ is the signal output plus terminal, and S-is a signal output negative terminal, and+18V is the intrinsic safety electric source anode; GND is the intrinsic safety electric source negative terminal, and C+ is the capacitance signal anode, and C-is the capacitance signal negative terminal.
During use, the user only needs three button S2, S3, S4 just can grasp the adjustment of this device easily.At first, sensor probe (teflon cable 4 and counterweight 5) is put into down-hole sewage liquid, when liquid level just in time is in teflon cable 0 scale, the S2 that pushes button, it is 0.00 meter that the liquid level of this moment is demarcated; Then, sensor probe is goed deep in the liquid, when making liquid level just in time be in 1 meter demarcation position; Press key S3, will so just accomplish the sign to the different liquids height this moment automatically with 1 meter of the liquid level zone bit of gathering; Secondly, regulate range ability through button S4, the range height of sensor has 1 meter, 1.5 meters, 2 meters three ranges optional; Charactron will show current range about 0.5 second after pushing button; Automatically just be adjusted into real-time level then and show that whenever will switch to different ranges by one-touch S4, these three ranges are Cyclic Selection.Select just to have accomplished whole sensor adjustment behind the suitable range, sensor will be according to the predetermined work that is provided with.
Claims (5)
1. mining wastewater level survey sensor; Comprise sensor casing, sensor probe, cable and IR remote controller; It is characterized in that cable inserts the sensor casing; Sensor casing inside is provided with capacitance signal metering circuit, single-chip microcomputer, power protection and change-over circuit, function circuit and output display circuit, and sensor probe connects the capacitance signal metering circuit in the sensor casing;
The capacitance signal metering circuit comprises the low-pass filter circuit that the change-over circuit of accomplishing capacitance signal and converting voltage signal into, the amplifying circuit of accomplishing the signal power amplification and inhibition power frequency are disturbed;
Power protecting circuit comprises electric power polarity identification circuit and mu balanced circuit;
Function circuit comprises the infrared remote controller be made up of infrared transtation mission circuit and infrared receiving circuit, be used to accomplish the key circuit of adjustment at zero point, full scale adjustment and range ability adjustment, accomplish the system in case of system halt self-starting watchdog circuit, be used to realize manual automatically reset reset circuit;
The output display circuit comprises digital display circuit, frequency output circuit and sound light alarming circuit.
2. a kind of mining wastewater level survey sensor as claimed in claim 1, it is characterized in that: said sensor probe is connected to form by counterweight and the special of teflon cable, is specially a utmost point and the counterweight conducting of teflon cable, another utmost point insulation.
3. a kind of mining wastewater level survey sensor as claimed in claim 2 is characterized in that said counterweight and teflon cable inlead end should be done quarantine measures with survey liquid, adopts sealing gasket and epoxy sealing.
4. like claim 2 and 3 described a kind of mining wastewater level survey sensors, it is characterized in that: said counterweight is processed by stainless steel material.
5. like claim 2 and 3 described a kind of mining wastewater level survey sensors, it is characterized in that: said teflon cable is a coaxial cable structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202087862U CN202562563U (en) | 2012-05-10 | 2012-05-10 | Sewage level measurement sensor for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202087862U CN202562563U (en) | 2012-05-10 | 2012-05-10 | Sewage level measurement sensor for mine |
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| Publication Number | Publication Date |
|---|---|
| CN202562563U true CN202562563U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202087862U Expired - Lifetime CN202562563U (en) | 2012-05-10 | 2012-05-10 | Sewage level measurement sensor for mine |
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| Country | Link |
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| CN (1) | CN202562563U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107203226A (en) * | 2017-06-20 | 2017-09-26 | 熊佳富 | A kind of three ring solid-states probe detected to city piping lane catch pit water level |
| CN107870020A (en) * | 2017-12-26 | 2018-04-03 | 太原理工大学 | A kind of triaxial cable capacity water level measuring device |
| CN110567548A (en) * | 2019-10-11 | 2019-12-13 | 安徽恒泰电气科技股份有限公司 | Mining intelligent liquid level sensor |
| CN112097858A (en) * | 2020-08-26 | 2020-12-18 | 天地科技股份有限公司 | Liquid level sensor and method for monitoring water level by using same |
| CN110567548B (en) * | 2019-10-11 | 2024-04-30 | 安徽恒泰电气科技股份有限公司 | Mining intelligent liquid level sensor |
-
2012
- 2012-05-10 CN CN2012202087862U patent/CN202562563U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107203226A (en) * | 2017-06-20 | 2017-09-26 | 熊佳富 | A kind of three ring solid-states probe detected to city piping lane catch pit water level |
| CN107203226B (en) * | 2017-06-20 | 2023-08-11 | 熊佳富 | Three-ring solid-state probe for detecting water level of urban pipe gallery sump |
| CN107870020A (en) * | 2017-12-26 | 2018-04-03 | 太原理工大学 | A kind of triaxial cable capacity water level measuring device |
| CN107870020B (en) * | 2017-12-26 | 2019-12-17 | 太原理工大学 | Three coaxial cable capacitance type water level measuring device |
| CN110567548A (en) * | 2019-10-11 | 2019-12-13 | 安徽恒泰电气科技股份有限公司 | Mining intelligent liquid level sensor |
| CN110567548B (en) * | 2019-10-11 | 2024-04-30 | 安徽恒泰电气科技股份有限公司 | Mining intelligent liquid level sensor |
| CN112097858A (en) * | 2020-08-26 | 2020-12-18 | 天地科技股份有限公司 | Liquid level sensor and method for monitoring water level by using same |
| CN112097858B (en) * | 2020-08-26 | 2023-12-08 | 天地科技股份有限公司 | Liquid level sensor and method for monitoring water level thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |