CN208333597U - Oil-measuring apparatus for metering separator - Google Patents

Abstract

The utility model discloses a kind of oil-measuring apparatus for metering separator, belong to oil measurement technical field.The oil-measuring apparatus includes: power module, signal conversion circuit, main control module and display module.The utility model by power module is liquidometer, signal conversion circuit, main control module and display module provide power supply, in this way, liquidometer can export different current signals in different liquid levels when detecting liquid level and be transmitted to signal conversion circuit.The current signal received is converted to the analog voltage signal of standard and is transmitted to main control module by signal conversion circuit.For the ease of automatic processing, the analog voltage signal of standard can be converted to the digital signal of standard by main control module, and analytic operation is carried out to the digital signal of standard, to determine the liquid level of liquidometer detection, while calculating the well yield of the oil well be connected with metering separator.Finally, being shown based on display module, the convenience and accuracy of the one-well metering of oil well are improved.

Description

Oil-measuring apparatus for metering separator

Technical field

The utility model relates to oil measurement technical field, in particular to a kind of oil-measuring apparatus for metering separator.

Background technique

In the production process of oil well, individual well can be carried out by Liquid output of the liquidometer in metering separator to oil well Metering, with the production status of clear oil well.Later, invalid oil well can be taken and stops well measure, to reduce the energy consumption of oil well. Wherein, invalid oil well refers to that Liquid output is less than the oil well of default value.

In the related technology, operator selects suitable initial liquid level on metering separator in advance and terminates liquid level.It Afterwards, after one-well metering pipeline is connected in operator, the liquid level in metering separator is detected by liquidometer, works as metering separator Operator starts timing when interior liquid level reaches initial liquid level, and stops timing when liquid level, which reaches, terminates liquid level.In timing After the completion, initial liquid level is passed through by operator and terminates the liquid measure in liquidometer calculation metering separator, and by the liquid measure and counted Ratio between Shi Shichang is determined as the Liquid output of the oil well, to realize the metering to the Liquid output of the oil well.

However, not only increasing operator's when carrying out one-well metering by Liquid output of the above method to oil well Workload, and there may be errors when carrying out timing to the duration between initial liquid level and end liquid level, to cause to measure As a result inaccuracy.

Utility model content

In order to reduce the deviation occurred during the Liquid output of oil well carries out one-well metering, the utility model is provided A kind of oil-measuring apparatus for metering separator.The technical solution is as follows:

The utility model provides a kind of oil-measuring apparatus for metering separator, and the oil-measuring apparatus includes: power supply mould Block, signal conversion circuit, main control module and display module；

First output end of the power module is electrically connected with the input terminal of liquidometer, the second output of the power module End be electrically connected with the first input end of the main control module, the third output end of the power module respectively with the main control module The second input terminal and the display module power input electrical connection, the 4th output end of the power module and the letter The first voltage input terminal electrical connection of number translation circuit；

The current input terminal of the signal conversion circuit is electrically connected with the output end of the liquidometer, the signal transformation electricity The second voltage input terminal on road is electrically connected with the voltage output end of the main control module, the output end of the signal conversion circuit with The third input terminal of the main control module is electrically connected；

The electrical connection of the data input pin of the data output end of the main control module and the display module, the main control module Data input pin be electrically connected with the data output end of the display module；

The ground terminal of the power module, the ground terminal of the signal conversion circuit, the main control module ground terminal and The ground terminal of the display module is grounded respectively.

Optionally, the power module includes: power supply, booster circuit, the first reduction voltage circuit and the second reduction voltage circuit；

The output end of the power supply respectively with the input terminal of the booster circuit, first reduction voltage circuit input terminal and The first voltage input terminal of the signal conversion circuit is electrically connected；

The output end of the booster circuit is electrically connected with the input terminal of the liquidometer；

The output end of first reduction voltage circuit respectively with the input terminal and the main control module of second reduction voltage circuit First input end electrical connection；

The output end of second reduction voltage circuit respectively with the second input terminal of the main control module and the display module Power input electrical connection；

The ground terminal of the power supply, the ground terminal of the booster circuit, the ground terminal of first reduction voltage circuit and described The ground terminal of second reduction voltage circuit is grounded respectively.

Optionally, the booster circuit includes: boost chip, the first inductance, first diode, first resistor, the second electricity Resistance, the first electrolytic capacitor and the second electrolytic capacitor；

The anode of the input pin of the boost chip, one end of first inductance and first electrolytic capacitor is respectively Be electrically connected with the output end of the power supply, the other end of first inductance respectively with the switch pin of the boost chip and institute State the anode electrical connection of first diode, the cathode of the first diode respectively with one end of the first resistor, described the The anode of two electrolytic capacitors and the input terminal of the liquidometer are electrically connected；

The other end of first resistor one end with the feedback pin of the boost chip and the second resistance respectively Electrical connection, the cathode of first electrolytic capacitor, the other end of the second resistance, the cathode of second electrolytic capacitor and institute The grounding pin for stating boost chip is grounded respectively.

Optionally, first reduction voltage circuit includes: the first decompression chip, the second diode, third diode, third electricity Resistance, the 4th resistance, the 5th resistance, first capacitor, the second capacitor, third capacitor, the 4th capacitor, third electrolytic capacitor and the second electricity Sense；

The anode of second diode is connect with the output end of the power supply, the cathode of second diode respectively with One end of the first capacitor, one end of second capacitor, one end of the 3rd resistor and described first are depressured chip The other end of input pin electrical connection, the other end of the first capacitor and second capacitor is grounded respectively, the third electricity The other end of resistance is electrically connected with the enabled pin of the first decompression chip；

The switch pin yin with one end of the third capacitor, the third diode respectively of the first decompression chip Pole and the electrical connection of one end of second inductance, the bootlace pin of the other end of the third capacitor and the first decompression chip Electrical connection, the other end of second inductance respectively with one end of the 4th capacitor, the anode of the third electrolytic capacitor, institute State one end of the 4th resistance and the input terminal electrical connection of second reduction voltage circuit, the anode of the third diode, described the The cathode of the other end of four capacitors and the third electrolytic capacitor is grounded respectively；

The other end of 4th resistance is depressured the feedback of chip with one end of the 5th resistance and described first respectively The grounding pin of pin electrical connection, the other end of the 5th resistance and the first decompression chip is grounded respectively.

Optionally, second reduction voltage circuit includes: the second decompression chip, the 5th capacitor, the 6th capacitor and the 4th electrolysis Capacitor；

The second decompression input pin of chip, the 5th capacitor one end respectively with first reduction voltage circuit Output end electrical connection, the grounding pin of the second decompression chip and the other end of the 5th capacitor are grounded respectively；

It is electric with the described 4th respectively after first output pin of the second decompression chip and the electrical connection of the second output pin Solve one end, the second input terminal of the main control module and the power supply of the display module of positive, described 6th capacitor of capacitor Input terminal electrical connection, the other end of the 6th capacitor and the cathode of the 4th electrolytic capacitor are grounded respectively.

Optionally, the signal conversion circuit includes: operational amplifier, the 6th resistance, the 7th resistance, the 8th resistance, Nine resistance, the tenth resistance, eleventh resistor, twelfth resistor, thirteenth resistor, the 7th capacitor, the 8th capacitor, the 9th capacitor, Tenth capacitor, the 11st capacitor, the 4th diode and the 5th diode；

One end of 6th resistance and one end of the 7th resistance are electrically connected with the output end of the liquidometer respectively, The other end of 7th resistance respectively with the cathode of the 4th diode, one end of the 7th capacitor and the operational amplifier The electrical connection of level-one homophase input pin, the anode of the 4th diode is electrically connected with the anode of the 5th diode, institute The cathode, the other end of the 7th capacitor and the other end of the 6th resistance for stating the 5th diode are grounded respectively；

8th capacitor and the 8th resistor coupled in parallel, one end of the 8th resistance and the one of the operational amplifier Grade reversed input pin electrical connection, the other end of the 8th resistance respectively with the level-one output pin of the operational amplifier and One end of 9th resistance is electrically connected；

Tenth resistance and the 9th capacitor are in parallel, and the eleventh resistor and the tenth capacitor are in parallel, described The other end of 9th resistance respectively with one end of the tenth resistance, one end of the eleventh resistor and the operational amplifier The electrical connection of second level homophase input pin, the voltage output end of the other end and the main control module of the tenth resistance is electrically connected It connects, the other end grounding connection of the eleventh resistor；

The twelfth resistor and the 11st capacitor are in parallel, one end of the twelfth resistor respectively with the operation The second level reversed input pin of amplifier and one end electrical connection of the thirteenth resistor, the other end point of the twelfth resistor It is not electrically connected with the third input terminal of the second level output pin of the operational amplifier and the main control module；

The other end grounding connection of the thirteenth resistor, the voltage input pin of the operational amplifier and the power supply 4th output end of module is electrically connected.

Optionally, the main control module includes: analog to digital conversion circuit and single chip circuit；

The first input end of analog-digital conversion circuit as described is electrically connected with the second output terminal of the power module, the modulus Second input terminal of conversion circuit is electrically connected with the output end of the signal conversion circuit, and the voltage of analog-digital conversion circuit as described is defeated Outlet is electrically connected with the second voltage input terminal of the signal conversion circuit；

The power input of the single chip circuit is electrically connected with the third output end of the power module, the single-chip microcontroller The data input pin of the data output end of circuit and the display module electrical connection, the data input pin of the single chip circuit with The data output end of the display module is electrically connected；

The first control signal output end of the control signal input of analog-digital conversion circuit as described and the single chip circuit Electrical connection, the serial clock input terminal of analog-digital conversion circuit as described are electrically connected with the clock signal control terminal of the single chip circuit It connects, the serial data input of analog-digital conversion circuit as described is electrically connected with the serial data output terminal of the single chip circuit, institute The serial data output terminal for stating analog to digital conversion circuit is electrically connected with the serial data input of the single chip circuit, the modulus The logic output terminal of conversion circuit is electrically connected with the logic input terminal of the single chip circuit；

The ground terminal of analog-digital conversion circuit as described and the ground terminal of difference analogue negative input end and the single chip circuit It is grounded respectively.

Optionally, analog-digital conversion circuit as described includes: analog-digital converter, voltage reference chip, the first crystal oscillator, the 14th electricity Resistance, the 15th resistance, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 15th capacitor and the 16th capacitor；

The difference analogue positive input pin of the analog-digital converter is electrically connected with the output end of the signal conversion circuit, institute State the difference analogue negative input pin ground connection of analog-digital converter, one end of the 14th resistance, the 15th resistance one The power input pin point at end, one end of the 14th capacitor, one end of the 15th capacitor and the analog-digital converter It is not electrically connected with the second output terminal of the power module, the 14th other end of resistance and answering for the analog-digital converter Position pin electrical connection, the other end of the 15th resistance respectively with the benchmark positive input pin of the analog-digital converter, described One end of the second voltage input terminal of signal conversion circuit, the negative electrode pin of the voltage reference chip and the 16th capacitor Electrical connection, the other end, the institute of the benchmark negative input pin and grounding pin of the analog-digital converter and the 14th capacitor The other end, the other end of the 16th capacitor and the negative electrode pin of the voltage reference chip for stating the 15th capacitor connect respectively Ground connection；

One end of 12nd capacitor master clock with one end of first crystal oscillator and the analog-digital converter respectively The electrical connection of signal input pin, one end of the 13rd capacitor turn with the other end of first crystal oscillator and the modulus respectively The inverting clock signal input pin of parallel operation is electrically connected, the other end of the 12nd capacitor and the 13rd capacitor it is another End is grounded respectively；

The chip select pin of the analog-digital converter is electrically connected with the first control signal output end of the single chip circuit, institute The serial clock input pin for stating analog-digital converter is electrically connected with the clock signal control terminal of the single chip circuit, the modulus The serial date transfer pin of converter is electrically connected with the serial data output terminal of the single chip circuit, the analog-digital converter Serial data output pin be electrically connected with the serial data input of the single chip circuit, the logic of the analog-digital converter Output pin is electrically connected with the logic input terminal of the single chip circuit.

Optionally, the single chip circuit includes: single-chip microcontroller, the second crystal oscillator, the 16th resistance, the 17th resistance, the tenth Eight resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 17th capacitor, the 18th capacitor, the 5th electrolytic capacitor And reset button；

One end of the reset button, the 5th electrolytic capacitor positive and described single-chip microcontroller power input pin point Be not electrically connected with the third output end of the power module, the other end of the reset button respectively with the 16th resistance The reset pin of one end, the cathode of the 5th electrolytic capacitor and the single-chip microcontroller is electrically connected, the 16th resistance it is another End ground connection；

The single-chip microcontroller reverse phase amplification output pin respectively with one end of second crystal oscillator and the 17th capacitor One end electrical connection, the single-chip microcontroller reverse phase amplification input pin respectively with the other end of second crystal oscillator and the described tenth One end of eight capacitors is electrically connected, the other end and the single-chip microcontroller of the other end of the 17th capacitor, the 18th capacitor Grounding pin be grounded respectively；

17th resistance is connected on the serial data output pin and analog-digital conversion circuit as described of the single-chip microcontroller Between serial data input, the 18th resistance is connected on the serial date transfer pin and the modulus of the single-chip microcontroller Between the serial data output terminal of conversion circuit, the 19th resistance is connected on the clock signal control pin of the single-chip microcontroller Between the serial clock input terminal of analog-digital conversion circuit as described, the P1.4 that the 20th resistance is connected on the single-chip microcontroller is defeated Enter/between output pin and the logic output terminal of analog-digital conversion circuit as described, the 21st resistance is connected on the monolithic Between the P1.0 input/output pin of machine and the control signal input of analog-digital conversion circuit as described；

The data of the single-chip microcontroller send pin and are electrically connected with the data input pin of the display module, the single-chip microcontroller Data receiver pin is electrically connected with the data output end of the display module.

Optionally, the main control module further includes switching value output circuit；

The first control signal input terminal or second control signal input terminal and the monolithic of the switching value output circuit The second control signal output end on electromechanical road is electrically connected, the first voltage input terminal and the power supply of the switch output quantity circuit The second output terminal of module is electrically connected, the second voltage input terminal of the switching value output circuit and the third of the power module Output end electrical connection, the tertiary voltage input terminal of the switching value output circuit are electrically connected with the 4th output end of the power module It connects, the ground terminal ground connection of the switching value output circuit；

The switching value output circuit is used to receive the control that the second control signal output end of the single chip circuit is sent Signal processed, and determine whether to alarm based on the control signal.

The beneficial effect of technical solution provided by the utility model is: being respectively liquidometer, signal change by power module It changes circuit, main control module and display module and power supply is provided, in this way, liquidometer can be when detecting liquid level in different liquid levels Different current signals is exported, and is transmitted to signal conversion circuit.Signal conversion circuit is converted to the current signal received The analog voltage signal of standard, and it is transmitted to main control module.For the ease of automatic processing, main control module can be by the mould of standard Quasi- voltage signal is converted to the digital signal of standard, and carries out analytic operation to the digital signal of the standard, to determine liquidometer The liquid level of detection, while the liquid level based on detection calculates the well yield of the oil well be connected with metering separator.Most Afterwards, the well yield of determining liquid level and oil well is shown based on display module, improves the one-well metering of oil well Convenience.Meanwhile being automatic processing by all processes of the oil-measuring apparatus to oil well one-well metering, it avoids because artificial Subjective factor causes the record of start time point, current point in time or end time point, and there are deviations, to improve oil well The accuracy of one-well metering.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is a kind of structural schematic diagram of oil-measuring apparatus for metering separator provided by the embodiment of the utility model；

Fig. 2 is a kind of structural schematic diagram of power module provided by the embodiment of the utility model；

Fig. 3 is a kind of structural schematic diagram of booster circuit provided by the embodiment of the utility model；

Fig. 4 is a kind of structural schematic diagram of first reduction voltage circuit provided by the embodiment of the utility model；

Fig. 5 is a kind of structural schematic diagram of second reduction voltage circuit provided by the embodiment of the utility model；

Fig. 6 is a kind of structural schematic diagram of signal conversion circuit provided by the embodiment of the utility model；

Fig. 7 is a kind of structural schematic diagram of main control module provided by the embodiment of the utility model；

Fig. 8 is a kind of structural schematic diagram of analog to digital conversion circuit provided by the embodiment of the utility model；

Fig. 9 is a kind of structural schematic diagram of single chip circuit provided by the embodiment of the utility model；

Figure 10 is a kind of structural schematic diagram of switching value output circuit provided by the embodiment of the utility model；

Figure 11 is a kind of structural schematic diagram of switching value output circuit provided by the embodiment of the utility model；

Figure 12 is a kind of structural schematic diagram that circuit is arranged provided by the embodiment of the utility model；

Figure 13 is a kind of structural schematic diagram that circuit is arranged provided by the embodiment of the utility model.

Appended drawing reference:

1: liquidometer；1a: the input terminal of liquidometer；1b: the output end of liquidometer；

2: power module；2a: the first output end of power module；2b: the second output terminal of power module；2c: power supply mould The third output end of block；2d: the 4th output end of power module；2e: the ground terminal of power module；

3: signal conversion circuit；3a: the current input terminal of signal conversion circuit；3b: the first voltage of signal conversion circuit Input terminal；3c: the second voltage input terminal of signal conversion circuit；3d: the output end of signal conversion circuit；3e: signal transformation electricity The ground terminal on road；

4: main control module；4a: the first input end of main control module；4b: the second input terminal of main control module；4c: master control mould The voltage output end of block；4d: the third input terminal of main control module；4e: the data output end of main control module；4f: main control module Data input pin；4g: the ground terminal of main control module；

5: display module；5a: the power input of display module；5b: the data input pin of display module；5c: display mould The data output end of block；5d: the ground terminal of display module；

21: power supply；21a: the output end of power supply；21b: the ground terminal of power supply；

22: booster circuit；22a: the input terminal of booster circuit；22b: the output end of booster circuit；22c: booster circuit Ground terminal；221: boost chip；L1: the first inductance；D1: first diode；R1: first resistor；R2: second resistance；E1: the first Electrolytic capacitor；E2: the second electrolytic capacitor；IN: the input pin of boost chip；SW: the switch pin of boost chip；FB: boosting The feedback pin of chip；GND: the grounding pin of boost chip；

23: the first reduction voltage circuits；The input terminal of 23a: the first reduction voltage circuit；The output end of 23b: the first reduction voltage circuit； The ground terminal of 23c: the first reduction voltage circuit；231: the first decompression chips；L2: the second inductance；D2: the second diode；D3: the three two Pole pipe；R3: 3rd resistor；R4: the four resistance；R5: the five resistance；E3: third electrolytic capacitor；C1: first capacitor；C2: the second Capacitor；C3: third capacitor；C4: the four capacitor；The input pin of IN: the first decompression chip；EN: the first decompression chip enables Pin；The switch pin of SW: the first decompression chip；The bootlace pin of BST: the first decompression chip；FB: the first is depressured the anti-of chip Present pin；The grounding pin of GND: the first decompression chip；

24: the second reduction voltage circuits；The input terminal of 24a: the second reduction voltage circuit；The output end of 24b: the second reduction voltage circuit； The ground terminal of 24c: the second reduction voltage circuit；241: the second decompression chips；E4: the four electrolytic capacitor；C5: the five capacitor；C6: the six Capacitor；The input pin of IN: the second decompression chip；The grounding pin of GND: the second decompression chip；OUT1: the second decompression chip First output pin；Second output pin of the OUT2: the second decompression chip；

31: operational amplifier；D4: the four diode；D5: the five diode；R6: the six resistance；R7: the seven resistance；R8: 8th resistance；R9: the nine resistance；R10: the ten resistance；R11: eleventh resistor；R12: twelfth resistor；R13: the ten three electricity Resistance；C7: the seven capacitor；C8: the eight capacitor；C9: the nine capacitor；C10: the ten capacitor；C11: the ten one capacitor；VoA: operation is put The level-one output pin of big device；ViA-: the level-one reversed input pin of operational amplifier；ViA+: the level-one of operational amplifier is same Phase pin；GND: the grounding pin of operational amplifier；VCC: the voltage input pin of operational amplifier；VoB: operational amplifier Second level output pin；ViB-: the second level reversed input pin of operational amplifier；ViB+: the second level homophase input of operational amplifier Pin；

41: analog to digital conversion circuit；41a: the first input end of analog to digital conversion circuit；41b: the second of analog to digital conversion circuit is defeated Enter end；41c: the voltage output end of analog to digital conversion circuit；41d: the control signal input of analog to digital conversion circuit；41e: modulus turns Change the serial clock input terminal of circuit；41f: the serial data input of analog to digital conversion circuit；41g: the string of analog to digital conversion circuit Row data output end；41h: the logic output terminal of analog to digital conversion circuit；41i: the ground terminal of analog to digital conversion circuit；41j: modulus turns Change the difference analogue negative input end of circuit；

411: analog-digital converter；412: the first crystal oscillators；413: voltage reference chip；R14: the ten four resistance；R15: the ten Five resistance；C12: the ten two capacitor；C13: the ten three capacitor；C14: the ten four capacitor；C15: the ten five capacitor；C16: the ten six Capacitor；SCLK: the serial clock input pin of analog-digital converter；MCLK_IN: the master clock signal input of analog-digital converter is drawn Foot；MCLK_OUT: the inverting clock signal input pin of analog-digital converter；The chip select pin of analog-digital converter；REST: mould The reset pin of number converter；AIN1 (+): the difference analogue positive input pin of analog-digital converter；AIN1 (-): analog-digital converter Difference analogue negative input pin；REF_IN1 (+): the benchmark positive input pin of analog-digital converter；REF_IN1 (-): modulus turns The benchmark negative input pin of parallel operation；The logic output pin of analog-digital converter；DOUT: the serial number of analog-digital converter According to output pin；DIN: the serial date transfer pin of analog-digital converter；Vdd: the power input pin of analog-digital converter；GND: The grounding pin of analog-digital converter；ANODE: the negative electrode pin of voltage reference chip；CATHODE: the cathode of voltage reference chip Pin；

42: single chip circuit；42a: the power input of single chip circuit；42b: the data output end of single chip circuit； 42c: the data input pin of single chip circuit；42d: the first control signal output end of single chip circuit；42e: single chip circuit Clock signal control terminal；42f: the serial data output terminal of single chip circuit；42g: the serial date transfer of single chip circuit End；42h: the logic input terminal of single chip circuit；42i: the ground terminal of single chip circuit；42j: the second control of single chip circuit Signal output end；42k: the first setting end of single chip circuit；42l: the second setting end of single chip circuit；42m: monolithic is electromechanical End is arranged in the third on road；42n: the 4th setting end of single chip circuit；42o: the 5th setting end of single chip circuit；42p: monolithic The 6th setting end on electromechanical road；

421: single-chip microcontroller；422: the second crystal oscillators；R16: the ten six resistance；R17: the ten seven resistance；R18: the ten eight resistance； R19: the ten nine resistance；R20: the two ten resistance；R21: the two ten one resistance；C17: the ten seven capacitor；C18: the ten eight capacitor； E5: the five electrolytic capacitor；K: reset button；MOSI: the serial data output pin of single-chip microcontroller；MISO: the serial number of single-chip microcontroller According to input pin；SCLK: the clock signal of single-chip microcontroller controls pin；RST: the reset pin of single-chip microcontroller；XTAL2: single-chip microcontroller Reverse phase amplifies output pin；XTAL1: the reverse phase of single-chip microcontroller amplifies input pin；GND: the grounding pin of single-chip microcontroller；Vcc: monolithic The power input pin of machine；PORT0 [0]: the P0.0 input/output pin of single-chip microcontroller；PORT0 [1]: the P0.1 of single-chip microcontroller is defeated Enter/output pin；PORT0 [2]: the P0.2 input/output pin of single-chip microcontroller；PORT0 [3]: the P0.3 input/output of single-chip microcontroller Pin；PORT0 [4]: the P0.4 input/output pin of single-chip microcontroller；PORT0 [5]: the P0.5 input/output pin of single-chip microcontroller； PORT1 [0]: the P1.0 input/output pin of single-chip microcontroller；PORT1 [4]: the P1.4 input/output pin of single-chip microcontroller；PORT2 [5]: the P2.5 input/output pin of single-chip microcontroller；TxD2: the data of single-chip microcontroller send pin；RxD2: the data receiver of single-chip microcontroller Pin；

43: switching value output circuit；43a: the first control signal input terminal of switching value output circuit；43b: switching value is defeated The second control signal input terminal of circuit out；43c: the first voltage input terminal of switching value output circuit；43d: output switch parameter The second voltage input terminal of circuit；43e: the tertiary voltage input terminal of switching value output circuit；43f: switching value output circuit Ground terminal；

431: photoelectrical coupler；432: the first alarms；433: the second alarms；434: the first control switches；435: the Two control switches；R22: the two ten two resistance；R23: the two ten three resistance；R24: the two ten four resistance；R25: the two ten five electricity Resistance；C19: the ten nine capacitor；C20: the two ten capacitor；IN1: the first input end of photoelectrical coupler；OUT1: photoelectrical coupler First output end；C1: the first collector of photoelectrical coupler；First emitter of E1 photoelectrical coupler；IN2 photoelectrical coupler Second input terminal；The second output terminal of OUT2 photoelectrical coupler；Second collector of C2 photoelectrical coupler；E2 photoelectrical coupler Second emitter；

44: setting circuit；44a: the first setting end；44b: the second setting end；44c: end is arranged in third；44d: the four setting End；44e: the five setting end；44f: the six setting end；S1: the first set key；S2: the second set key；S3: third set key； S4: the four set key；S5: the five set key；S6: the six set key；S7: the seven set key；S8: the eight set key；S9: the nine Set key.

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer Type embodiment is described in further detail.

Fig. 1 is a kind of structural schematic diagram for oil-measuring apparatus for metering separator that the utility model embodiment proposes, The oil-measuring apparatus is used cooperatively with liquidometer 1.Referring to Fig. 1, which includes: power module 2, signal conversion circuit 3, master Control module 4 and display module 5.First output end 2a of power module 2 is electrically connected with the input terminal 1a of liquidometer 1, power module 2 Second output terminal 2b be electrically connected with the first input end 4a of main control module 4, the third output end 2c of power module 2 respectively with master Control the power input 5a electrical connection of the second input terminal 4b and display module 5 of module 4, the 4th output end 2d of power module 2 It is electrically connected with the first voltage input terminal 3b of signal conversion circuit 3.

The current input terminal 3a of signal conversion circuit 3 is electrically connected with the output end 1b of liquidometer 1, signal conversion circuit 3 Second voltage input terminal 3c is electrically connected with the voltage output end 4c of main control module 4, the output end 3d of signal conversion circuit 3 and master control The third input terminal 4d of module 4 is electrically connected.

The data input pin 5b electrical connection of the data output end 4e and display module 5 of main control module 4, the number of main control module 4 It is electrically connected according to input terminal 4f with the data output end 5c of display module 5, the ground terminal 2e of power module 2, signal conversion circuit 3 The ground terminal 5d of ground terminal 3e, the ground terminal 4g of main control module 4 and display module 5 are grounded respectively.

Wherein, liquidometer 1 can be magnet controlled fluid level transmitter, in order in the first output for receiving power module 2 After holding 2a to provide voltage, the output end 1b of liquidometer 1 can export the current signal directly proportional to liquid level to signal and convert Circuit 3.Certainly, liquidometer 1 or other kinds of liquidometer, such as pressure liquid level transmitter.

Wherein, the voltage provided in the 4th output end 2d that signal conversion circuit 3 receives power module 2, and receive After the voltage provided to the voltage output end 4c of main control module 4, signal conversion circuit 3 can output end 1b to liquidometer 1 pass Defeated current signal carries out signal conversion process, which is converted into the analog voltage signal of standard, and pass through letter The output end 3d of number translation circuit 3 is transmitted to main control module 4.

Wherein, the operation program of the oil-measuring apparatus is previously stored with inside main control module 4, in order to receive power supply mould After the voltage that the second output terminal 2b and third output end 2c of block 2 are provided, to the output end 3d transmission standard of signal conversion circuit 3 Analog voltage signal carry out processing union, and the result after operation is passed through to the data output end 4e sum number of main control module 4 Display module 5 is transmitted to according to input terminal 4f.Since the current signal that liquidometer 1 exports is directly proportional to liquid level, electric current letter It is still directly proportional to liquid level height after number being handled by signal conversion circuit 3 and main control module 4, it therefore, can be based on treated mould Quasi- voltage signal determines the liquid level that liquidometer 1 detects, meanwhile, determine the start time point and current point in time of level sensing Or the timing duration between end time point.Between the sectional area of the liquid level and pre-stored metering separator that will test Product be determined as flow into metering separator in volume, then by between the volume and timing duration ratio determine with metering point The well yield of the oil well of oil well conducting from device conducting.

Wherein, display module 5 is after the voltage that the third output end 2c for receiving power module 2 is provided, to what is received The data information of data output end 4e and data input pin the 4f transmission of main control module 4 is shown, while when liquid level is higher It warns.Display module 5 can show the liquid level of metering separator, the well yield of oil well, oil well oil-producing moisture content and report Alert liquid level etc., display module 5 can be liquid crystal display, naturally it is also possible to be touch display screen, the utility model embodiment pair This is without limitation.

It is being that liquidometer 1, signal conversion circuit 3, main control module 4 and display module 5 provide power supply by power module 2 When, since the operating voltage of liquidometer 1, signal conversion circuit 3, main control module 4 and display module 5 may not be identical, electricity Source module 2 is in order to provide different voltage, and referring to fig. 2, power module 2 may include: power supply 21, the drop of booster circuit 22, first Volt circuit 23 and the second reduction voltage circuit 24.

The output end 21a of power supply 21 input terminal with the input terminal 22a of booster circuit 22, the first reduction voltage circuit 23 respectively The first voltage input terminal 3b of 23a and signal conversion circuit 3 electrical connection, the output end 22b of booster circuit 22 are defeated with liquidometer 1 Enter 1a is held to be electrically connected.The output end 23b of first reduction voltage circuit 23 respectively with the input terminal 24a and master control mould of the second reduction voltage circuit 24 The first input end 4a of block 4 is electrically connected, the output end 24b of the second reduction voltage circuit 24 respectively with the second input terminal of main control module 4 The power input 5a of 4b and display module 5 electrical connection.The ground terminal 21b of power supply 21, the ground terminal 22c of booster circuit 22, The ground terminal 24c of the ground terminal 23c of one reduction voltage circuit 23 and the second reduction voltage circuit 24 is grounded respectively.

It should be noted that power supply 21 is used to provide for booster circuit 22, the first reduction voltage circuit 23 and signal conversion circuit 3 Voltage, the voltage provided can be 12 volts, and power supply 21 can be dry cell or battery etc..Booster circuit 22 is used for power supply 21 The voltage of offer carries out boosting processing, and in order to boost that treated, voltage can reach voltage required for liquidometer 1, boosting Treated, and voltage can be 24 volts.The voltage that first reduction voltage circuit 23 is used to provide power supply 21 carries out decompression processing, so as to In decompression treated voltage can reach voltage required for the second reduction voltage circuit 24 and main control module 4, treated for decompression Voltage can be 5 volts.The voltage that second reduction voltage circuit 24 is used to provide the first reduction voltage circuit carries out decompression processing, in order to drop Pressure treated voltage can reach voltage required for display module 5, treated that voltage can be 3.3 volts for decompression.

Referring to Fig. 3, booster circuit 22 may include: boost chip 221, the first inductance L1, first diode D1, the first electricity Hinder R1, second resistance R2, the first electrolytic capacitor E1 and the second electrolytic capacitor E2.The input pin IN of boost chip 221, the first electricity The anode of one end and the first electrolytic capacitor E1 for feeling L1 is electrically connected with the output end 21a of power supply 21 respectively, and the first inductance L1's is another One end is electrically connected with the anode of the switch pin SW of boost chip 221 and first diode D1 respectively, the yin of first diode D1 Pole is electrically connected with the input terminal 1a of one end of first resistor R1, the anode of the second electrolytic capacitor E2 and liquidometer 1 respectively, the first electricity The other end of resistance R1 is electrically connected with one end of the feedback pin FB of boost chip 221 and second resistance R2 respectively, the first electrolysis electricity Hold the cathode of E1, the other end of second resistance R2, the cathode of the second electrolytic capacitor E2 and the grounding pin GND of boost chip 221 It is grounded respectively.

When the voltage provided by booster circuit 22 power supply 21 carries out boosting processing, pass through E1 pairs of the first electrolytic capacitor The AC signal in voltage that power supply 21 transmits is filtered, and the voltage after filtering processing is in the first inductance L1 and boosting core Carry out boosting processing under the collective effect of the switch pin SW of piece 221, and will boosting treated voltage through first diode D1 It exports to the input terminal 1a of liquidometer 1.When carrying out boosting processing to the voltage after filtering processing, the feedback of boost chip 221 Pin FB detection boosting treated voltage, and under the cooperation of the feedback pin FE and switch pin SW of boost chip 221, it protects Treated that voltage can reach voltage required for liquidometer 1 for card boosting.Wherein, the feedback pin FB of boost chip 221 can With by the voltage at the both ends second resistance R2, to boosting, treated that voltage detects.

For example, the model of boost chip 221 can be XL6009, the inductance size of the first inductance L1 can be 33 microhenrys Benefit, the model of first diode D1 can be SS14, and the resistance value size of first resistor R1 can be 10 kilohms, second resistance R2 Resistance value size can be 330 ohm, the capacitance size of the first electrolytic capacitor E1 can be 220 microfarad/35 volt, the second electrolysis electricity The capacitance size for holding E2 can be 100 microfarad/50 volt.

Referring to fig. 4, the first reduction voltage circuit 23 may include: the first decompression chip 231, the second diode D2, the three or two pole Pipe D3,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th electricity Hold C4, third electrolytic capacitor E3 and the second inductance L2.

The anode of second diode D2 is connect with the output end 21a of power supply 21, and the cathode of the second diode D2 is respectively with The input pin IN of one end of one capacitor C1, one end of the second capacitor C2, one end of 3rd resistor R3 and the first decompression chip 231 The other end of electrical connection, the other end of first capacitor C1 and the second capacitor C2 is grounded respectively, the other end of 3rd resistor R3 and the The enabled pin EN electrical connection of one decompression chip 231, the switch pin SW of the first decompression chip 231 is respectively with third capacitor C3's One end of one end, the cathode of third diode D3 and the second inductance L2 is electrically connected, the other end of third capacitor C3 and the first decompression The bootlace pin BST of chip 231 is electrically connected, and the other end of the second inductance L2 is electrolysed with one end of the 4th capacitor C4, third respectively The input terminal 24a of the anode of capacitor E3, one end of the 4th resistance R4 and the second reduction voltage circuit 24 is electrically connected, third diode D3's The cathode of anode, the other end of the 4th capacitor C4 and third electrolytic capacitor E3 is grounded respectively, the other end difference of the 4th resistance R4 It is electrically connected with the feedback pin FB of one end of the 5th resistance R5 and the first decompression chip 231, the other end of the 5th resistance R5 and the The grounding pin GND of one decompression chip 231 is grounded respectively.

When the voltage provided by the first reduction voltage circuit 23 power supply 21 carries out decompression processing, the voltage of the transmission of power supply 21 Pressure stabilizing is carried out through the second diode D2, then after the filtering processing by first capacitor C1 and the second capacitor C2 progress AC signal, It is transmitted to the input pin IN of the first decompression chip 231, and is transmitted to the first decompression after being depressured by 3rd resistor R3 The enabled pin EN of chip 231.In this way, in enabled pin EN, switch pin SW and the bootlace pin of the first decompression chip 231 Decompression processing carried out to the voltage after filtering processing under the oscillation action of BST and the second inductance L2, decompression treated voltage Respectively after the filtering processing that the 4th capacitor C4 and third electrolytic capacitor E3 carries out AC signal, output to the second reduction voltage circuit 24 Input terminal 24a.For carrying out decompression treated voltage by the first decompression chip, the first decompression chip 231 can be passed through Feedback pin FB carry out voltage detecting, to guarantee decompression, treated that voltage can satisfy the second reduction voltage circuit 24 and master control mould Voltage required for block 4.Wherein, the feedback pin FB of the first decompression chip 231 can pass through the voltage at the 5th both ends resistance R5 To decompression, treated that voltage detects.

For example, the model of the first decompression chip 231 can be MP2359, the type of the second diode D2 and third diode D3 Number all can be SS14, the resistance value size of 3rd resistor R3 can be 100 kilohms, and the resistance value size of the 4th resistance R4 can be 49.9 kilohms, the resistance value size of the 5th resistance R5 can be 9.53 kilohms, and the capacitance size of first capacitor C1 can be 10 The capacitance size of microfarad, the second capacitor C2 and the 4th capacitor C4 all can be 0.01 microfarad, the capacitance size of third capacitor C3 can Think that 0.001 microfarad, the inductance size of the second inductance L2 can be 4.7 microhenries.

Referring to Fig. 5, the second reduction voltage circuit 24 may include: the second decompression chip 241, the 5th capacitor C5, the 6th capacitor C6 With the 4th electrolytic capacitor E4.The input pin IN of second decompression chip 241, one end of the 5th capacitor C5 are electric with the first decompression respectively The output end 23b on road 23 is electrically connected, and the other end of the grounding pin GND and the 5th capacitor C5 of the second decompression chip 241 connect respectively Ground.After the first output pin OUT1 and the second output pin OUT2 electrical connection of second decompression chip 241, it is electrolysed respectively with the 4th The anode of capacitor E4, one end of the 6th capacitor C6, main control module 4 the second input terminal 4b and display module 5 power input 5a electrical connection, the other end of the 6th capacitor C6 and the cathode of the 4th electrolytic capacitor E4 are grounded respectively.

When the voltage provided by the second reduction voltage circuit 24 the first reduction voltage circuit 23 carries out decompression processing, the first decompression The voltage that circuit 23 transmits successively passes through the filtering processing that the 5th capacitor C5 carries out AC signal, and the second decompression chip 241 carries out After decompression processing, the 4th electrolytic capacitor E4 and the 6th capacitor C6 carry out the filtering processing of AC signal, output to main control module 4 The power input 5a of second input terminal 4b and display module 5.

For example, the model of the second decompression chip 241 can be AMS1117-3.3, the 5th capacitor C5 and the 6th capacitor C6 Capacitance size all can be 0.01 microfarad, the capacitance size of the 4th electrolytic capacitor E4 can be 220 microfarads.

It is amplified in the current signal exported by signal conversion circuit 3 to liquidometer 1, and the current signal is converted For standard analog voltage signal when, in one possible implementation, signal conversion circuit as shown in FIG. 6 can be passed through It is handled.Referring to Fig. 6, signal conversion circuit 3 may include: operational amplifier 31, the 6th resistance R6, the 7th resistance R7, Eight resistance R8, the 9th resistance R9, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, Seven capacitor C7, the 8th capacitor C8, the 9th capacitor C9, the tenth capacitor C10, the 11st capacitor C11, the 4th diode D4 and the five or two Pole pipe D5.

One end of 6th resistance R6 and one end of the 7th resistance R7 are electrically connected with the output end 1b of liquidometer 1 respectively, and the 7th The other end of resistance R7 is same with the level-one of the cathode of the 4th diode D4, one end of the 7th capacitor C7 and operational amplifier 31 respectively Phase input pin ViA+ electrical connection, the anode of the 4th diode D4 are electrically connected with the anode of the 5th diode D5, the 5th diode The other end of the cathode of D5, the other end of the 7th capacitor C7 and the 6th resistance R6 is grounded respectively, the 8th capacitor and the 8th resistance R8 Parallel connection, one end of the 8th resistance R8 are electrically connected with the level-one reversed input pin ViA- of operational amplifier 31, the 8th resistance R8's The other end is electrically connected with one end of the level-one output pin VoA of operational amplifier 31 and the 9th resistance R9 respectively, the tenth resistance R10 In parallel with the 9th capacitor C9, eleventh resistor R11 and the tenth capacitor C10 are in parallel, and the other end of the 9th resistance R9 is respectively with the tenth The second level homophase input pin ViB+ of one end of resistance R10, one end of eleventh resistor R11 and operational amplifier 31 is electrically connected, The other end of tenth resistance R10 is electrically connected with the voltage output end 4c of main control module 4, the other end ground connection of eleventh resistor R11 Connection, twelfth resistor R12 and the 11st capacitor C11 are in parallel, one end of twelfth resistor R12 respectively with operational amplifier 31 One end of second level reversed input pin ViB- and thirteenth resistor R13 electrical connection, the other end of twelfth resistor R12 respectively with fortune The third input terminal 4d electrical connection of the second level output pin VoB and main control module 4 of amplifier 31 are calculated, thirteenth resistor R13's is another One end grounding connection, the voltage input pin VCC of operational amplifier 31 are electrically connected with the 4th output end 2d of power module 2.

When carrying out signal conversion process to the current signal that liquidometer 1 provides by signal conversion circuit 3, liquidometer 1 The current signal of output successively carries out decompression processing through the 7th resistance R7 after the 6th resistance R6 is converted to voltage signal, and the 4th After diode D4 and the 5th diode D5 carries out the filtering processing of steady pressure treatment and the 7th capacitor C7 progress AC signal, pass Transport to the level-one homophase input pin ViA+ of operational amplifier 31.Later, in the level-one amplifier of operational amplifier 31 and the 8th The processing of level-one operation amplifier is carried out to the voltage after filtering processing under the collective effect of resistance R8 and the 8th capacitor C8.Treated Voltage is transmitted to the second level homophase input pin ViB+ of operational amplifier 31 after the 9th resistance R9 is divided, meanwhile, master control The reference voltage that the voltage output end 4c of module 4 is provided is divided through the tenth resistance R10 and eleventh resistor R11, and is passed through 9th capacitor C9 and the tenth capacitor C10 is filtered the second level homophase input pin that operational amplifier 31 is transmitted to after denoising ViB+.Later, in the second level amplifier of operational amplifier 31 and the collective effect of twelfth resistor R12 and the 11st capacitor C11 Under the processing of second level operation amplifier is carried out to level-one amplifier treated voltage, to obtain the analog voltage signal of standard, and will To the analog voltage signal of standard be transmitted to the third input terminal 4d of main control module 4.

For example, the model of operational amplifier 31 can be OP2177, the resistance value size of the 6th resistance R6 can be 250 Europe The resistance value size of nurse, the 7th resistance R7 and the 8th resistance R8 all can be 1 kilohms, the 9th resistance R9 and thirteenth resistor R13 Resistance value size all can be 20 kilohms, the resistance value size of the tenth resistance R10 and eleventh resistor R11 all can be 10 kilo-ohms Nurse, the resistance value size of twelfth resistor R12 can be 5 kilohms, the 7th capacitor C7, the 9th capacitor C11 of capacitor C9~the 11st Capacitance size all can be 0.1 microfarad, the capacitance size of the 8th capacitor C8 can be 10 nanofarads, the 4th diode D4 and the 5th The voltage swing of diode D5 all can be 5 volts.

After the analog voltage signal that main control module 4 receives the standard of the transmission of signal conversion circuit 3, for the ease of that will mark Quasi- analog voltage signal is converted to the digital signal of standard, and carries out analytic operation to the digital signal of standard, in one kind In possible implementation, it can be handled by main control module as shown in FIG. 6.Referring to Fig. 7, main control module 4 be can wrap It includes: analog to digital conversion circuit 41 and single chip circuit 42.

The first input end 41a of analog to digital conversion circuit 41 is electrically connected with the second output terminal 2b of power module 2, analog-to-digital conversion Second input terminal 41b of circuit 41 is electrically connected with the output end 3d of signal conversion circuit 3, the voltage output of analog to digital conversion circuit 41 End 41c is electrically connected with the second voltage input terminal 3c of signal conversion circuit 3.The power input 42a of 421 circuit 42 of single-chip microcontroller with The third output end 2c of power module 2 is electrically connected, and the data output end 42b of single chip circuit 42 and the data of display module 5 are defeated Enter 5b is held to be electrically connected, the data input pin 42c of single chip circuit 42 is electrically connected with the data output end 5c of display module 5.Modulus The control signal input 41d of conversion circuit 41 is electrically connected with the first control signal output end 42d of single chip circuit 42, modulus The serial clock input terminal 41e of conversion circuit 41 is electrically connected with the clock signal control terminal 42e of single chip circuit 42, analog-to-digital conversion The serial data input 41f of circuit 41 is electrically connected with the serial data output terminal 42f of single chip circuit 42, analog to digital conversion circuit 41 serial data output terminal 41g is electrically connected with the serial data input 42g of single chip circuit 42, analog to digital conversion circuit 41 Logic output terminal 41h is electrically connected with the logic input terminal 42h of single chip circuit 42.The ground terminal 41i of analog to digital conversion circuit 41 and The ground terminal 42i of difference analogue negative input end 41j and single chip circuit 42 is grounded respectively.

Wherein, analog to digital conversion circuit 41 is after the voltage that the second output terminal 2b for receiving power module 2 is provided, to signal The analog voltage signal of the standard of the output end 3d transmission of translation circuit 3 carries out conversion process, to obtain the digital signal of standard, Later, by the digital data transmission of standard to single chip circuit 42, while passing through the voltage output end 41c of analog to digital conversion circuit 41 Voltage is provided for signal conversion circuit 3.The voltage that single chip circuit 42 is provided in the third output end 2c for receiving power module 2 Afterwards, based on pre-stored operation program in single chip circuit 42, to the digital signal for the standard that analog to digital conversion circuit 41 transmits It is analyzed and processed, to determine the liquid level of the detection of liquidometer 1, and then determines the individual well of the oil well be connected with metering separator Yield.Later, the well yield of determining liquid level and oil well is passed through to the data output end 42b sum number of single chip circuit 42 Display module 5 is transmitted to according to input terminal 42c.

Wherein, referring to Fig. 8, analog to digital conversion circuit 41 includes: analog-digital converter 411, the first crystal oscillator 412, voltage reference core Piece 413, the 14th resistance R14, the 15th resistance R15, the 12nd capacitor C12, the 13rd capacitor C13, the 14th capacitor C14, 15th capacitor C15 and the 16th capacitor C16；

The difference analogue positive input pin AIN1 (+) of analog-digital converter 411 is electrically connected with the output end 3d of signal conversion circuit 3 It connects, difference analogue negative input pin AIN1 (-) ground connection of analog-digital converter 411, one end of the 14th resistance R14, the 15th electricity Hinder one end of R15, one end of the 14th capacitor C14, one end of the 15th capacitor C15 and the power input of analog-digital converter 411 Pin Vdd is electrically connected with the second output terminal 2b of power module 2 respectively, the other end and analog-digital converter of the 14th resistance R14 411 reset pin REST electrical connection, the other end of the 15th resistance R15 respectively with the benchmark positive input of analog-digital converter 411 Pin REF_IN1 (+), the second voltage input terminal 3c of signal conversion circuit 3, voltage reference chip 413 negative electrode pin One end of CATHODE and the 16th capacitor C16 electrical connection, the benchmark negative input pin REF_IN1 (-) of analog-digital converter 411 and The other end of grounding pin GND and the 14th capacitor C14, the other end of the 15th capacitor C15, the 16th capacitor C16 it is another The negative electrode pin ANODE of one end and voltage reference chip 413 distinguishes grounding connection.

One end of 12nd capacitor C12 master clock signal with one end of the first crystal oscillator 412 and analog-digital converter 411 respectively Input pin MCLK_IN electrical connection, one end of the 13rd capacitor C13 other end and analog-to-digital conversion with the first crystal oscillator 412 respectively The inverting clock signal input pin MCLK_OUT of device 411 is electrically connected, the other end and the 13rd capacitor of the 12nd capacitor C12 The other end of C13 is grounded respectively.The chip select pin of analog-digital converter 411It is defeated with the first control signal of single chip circuit 42 Outlet 42d electrical connection, the serial clock input pin SCLK of analog-digital converter 411 and the clock signal of single chip circuit 42 control Hold 42e electrical connection, the serial date transfer pin DIN of analog-digital converter 411 and the serial data output terminal of single chip circuit 42 42f electrical connection, the serial data output pin DOUT of analog-digital converter 411 and the serial data input of single chip circuit 42 42g electrical connection, the logic output pin of analog-digital converter 411It is electrically connected with the logic input terminal 42h of single chip circuit 42 It connects.

Turn carrying out modulus by analog voltage signal of the analog to digital conversion circuit 41 to the standard that signal conversion circuit 3 provides When changing processing, the AC signal in the analog voltage signal for the standard that the 16th capacitor C16 exports signal conversion circuit 3 is carried out Filtering and noise reduction processing, and it is transmitted to the difference analogue positive input pin AIN1 (+) of analog-digital converter 411.Analog-digital converter 411 exists Under the collective effect of first crystal oscillator 412, the 12nd capacitor C12 and the 13rd capacitor C13, the vibration frequency based on the first crystal oscillator 412 Received analog voltage signal is converted to the digital signal of standard by rate, meanwhile, the data sent based on single chip circuit 42 are obtained Request is taken, the standardized digital signal obtained after conversion is transmitted to single chip circuit 42.

Wherein, decompression processing is carried out by voltage of the 14th resistance R14 to access analog to digital conversion circuit 41, with realization pair The reset of analog-digital converter 411, to guarantee that analog-digital converter 411 is in original state.The electricity of 14th capacitor C14 and the 15th Hold the filtering and noise reduction processing that C15 is used to carry out the voltage of access analog to digital conversion circuit 41 AC signal, is turned with being supplied to modulus Parallel operation 411.15th resistance R15 is used to carry out the voltage of access analog to digital conversion circuit 41 partial pressure current limliting processing, and in voltage Under the partial pressure effect of fiducial chip 413, guarantee the electricity for being transmitted to the benchmark positive input pin REF_IN1 (+) of analog-digital converter 411 The voltage for pressing and being transmitted to the second voltage input terminal 3c of signal conversion circuit 3 is certain value.It is transmitted to analog-digital converter 411 The voltage of the voltage of benchmark positive input pin REF_IN1 (+) and the second voltage input terminal 3c for being transmitted to signal conversion circuit 3 are equal It can be 2.5 volts.

For example, the model of analog-digital converter 411 can be AD7705, the frequency size of the first crystal oscillator 412 can be 4.9152 megahertzs, the model of voltage reference chip 413 can be LM285D-2.5, and the resistance value size of the 14th resistance R14 can Think 10 kilohms, the resistance value size of the 15th resistance R15 can be 1 kilohm, the 12nd capacitor C12 and the 13rd capacitor The capacitance size of C13 all can be 47 pico farads, the capacitance size of the 14th capacitor C14 and the 16th capacitor C16 all can be 0.1 Microfarad, the capacitance size of the 15th capacitor C15 can be 10 microfarads.

Wherein, referring to Fig. 9, single chip circuit 42 may include: single-chip microcontroller 421, the second crystal oscillator 422, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance R20, the 21st resistance R21, 17th capacitor C17, the 18th capacitor C18, the 5th electrolytic capacitor E5 and reset button K.

The power input pin Vcc of one end of reset button K, the anode of the 5th electrolytic capacitor E5 and single-chip microcontroller 421 distinguishes Be electrically connected with the third output end 2c of power module 2, the other end of reset button K respectively with one end of the 16th resistance R16, The reset pin RST electrical connection of the cathode and single-chip microcontroller 421 of five electrolytic capacitor E5, the other end ground connection of the 16th resistance R16.It is single The reverse phase amplification output pin XTAL2 of piece machine 421 is electric with one end of the second crystal oscillator 422 and one end of the 17th capacitor C17 respectively Connection, single-chip microcontroller 421 reverse phase amplification input pin XTAL1 respectively with the other end and the 18th capacitor C18 of the second crystal oscillator 422 One end electrical connection, the other end, the other end of the 18th capacitor C18 and the grounding pin of single-chip microcontroller 421 of the 17th capacitor C17 GND is grounded respectively.

17th resistance R17 is connected on the serial data output pin MOSI and analog to digital conversion circuit 41 of single-chip microcontroller 421 Between serial data input 41f, the 18th resistance R18 is connected on the serial date transfer pin MISO and mould of single-chip microcontroller 421 Between the serial data output terminal 41g of number conversion circuit 41, the 19th resistance R19 is connected on the clock signal control of single-chip microcontroller 421 Between the serial clock input terminal 41e of pin SCLK and analog to digital conversion circuit 41 processed, the 20th resistance R20 is connected on single-chip microcontroller Between 421 P1.4 input/output pin and the logic output terminal 41h of analog to digital conversion circuit 41, the 21st resistance R21 series connection Between the P1.0 input/output pin of single-chip microcontroller 421 and the control signal input 41d of analog to digital conversion circuit 41.Single-chip microcontroller 421 data send pin TxD2 and are electrically connected with the data input pin 5b of display module 5, the data receiver pin of single-chip microcontroller 421 RxD2 is electrically connected with the data output end 5c of display module 5.

When being analyzed and processed by digital signal of the single chip circuit 42 to the standard that analog to digital conversion circuit 41 provides, Single chip circuit 42 is after the power supply that the third output end 2c of turn-on power module 2 is provided, in the reset pin of single-chip microcontroller 421 Under the action of RST, first passes through the 5th electrolytic capacitor E5 and the 16th resistance R16 and single-chip microcontroller 421 power on automatically reseting, or Hand-reset is carried out to single-chip microcontroller 421 by reset button K, to guarantee that pre-stored operation program is in single-chip microcontroller 421 Original state.Meanwhile after the power input pin Vcc turn-on power of single-chip microcontroller 421, in the second crystal oscillator 422, the 18th capacitor Under the collective effect of C18 and the 19th capacitor C19, the reverse phase amplification output pin XTAL2 of single-chip microcontroller 421 and reverse phase amplification input Pin XTAL1 control single chip computer 421 is started to work.At this point, single-chip microcontroller 421 starts to carry out the digital signal of the standard received Analysis processing to determine the liquid level of the detection of liquidometer 1, while determining the well yield of oil well.Later, pass through single-chip microcontroller 421 data send pin TxD2 and data receiver pin RxD2 and are transmitted to the well yield of determining liquid level and oil well Display module 5, to be shown by display module 5.

Wherein, the digital signal of standard is that single chip circuit passes through serial data output pin MOSI, serial date transfer Pin MISO, clock signal control pin SCLK, P1.0 input/output pin PORT1 [0] and P1.4 input/output pin PORT1 [4], it is received under the reciprocation with analog to digital conversion circuit.

Wherein it is possible to realize the hand-reset to single-chip microcontroller 421 by moment closed reduction button K.17th resistance R17, the 18th resistance R18, the 19th resistance R19, the 20th resistance R20 and the 21st resistance R21 are used for single-chip microcontroller 421 The digital signal of the standard received carries out decompression current limliting processing.

For example, the model of single-chip microcontroller 421 can be STC12LE5A60S2, the frequency size of the second crystal oscillator 422 can be 4 Megahertz, the resistance value size of the 16th resistance R16 can be 10 kilohms, the 17th resistance R21's of resistance R17~the 21st Resistance value size all can be 1 kilohm, the capacitance size of the 17th capacitor C17 and the 18th capacitor C18 all can be 22 pico farads, The capacitance size of 5th electrolytic capacitor E5 can be 10 microfarad/16 volt.

After the liquid level for determining the detection of liquidometer 1 by single chip circuit 42, in order to avoid in metering separator Oil liquid overflow metering separator, in one possible implementation, main control module 4 can also include switching value output circuit 43, in order to be alarmed by switching value output circuit as shown in Figure 10, to warn operator.Referring to Figure 10, The first control signal input terminal 43a or second control signal input terminal 43b and single chip circuit 42 of switching value output circuit 43 Second control signal output end 42j electrical connection, switch output quantity circuit 43 first voltage input terminal 43c and power module 2 Second output terminal 2b electrical connection, the third of the second voltage input terminal 43d of switching value output circuit 43 and power module 2 exports 2c electrical connection is held, the tertiary voltage input terminal 43e of switching value output circuit 43 is electrically connected with the 4th output end 2d of power module 2 It connects, the ground terminal 43f ground connection of switching value output circuit 43；Switching value output circuit 43 is for receiving the second of single chip circuit 42 The control signal that control signal output 42j is sent, and determine whether to alarm based on the control signal.

Wherein, referring to Figure 11, switching value output circuit 43 may include: photoelectrical coupler 431, the first alarm 432, Two alarms 433, the first control switch 434, the second control switch 435, the 22nd resistance R22, the 23rd resistance R23, 24th resistance R24, the 25th resistance R25, the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 19th capacitor C19, the 20th Capacitor C20, the 6th diode D6, the 7th diode D7, the first relay RLY1 and the second relay RLY2.

22nd resistance R22 is connected on the first input of the third output end 2c and photoelectrical coupler 431 of power module 2 It holds between IN1, it is second defeated to be connected on the third output end 2c of power module 2 and photoelectrical coupler 431 by the 23rd resistance R23 Enter to hold between IN2, the second control of the first output end OUT1 or second output terminal OUT2 and single chip circuit of photoelectrical coupler 431 Signal output end electrical connection processed, that is to say, be electrically connected with the P2.5 input/output pin of single-chip microcontroller 321, the 24th resistance R24 is connected between the first emitter E 1 of photoelectrical coupler 431 and the grid of the first metal-oxide-semiconductor Q1, the drain electrode of the first metal-oxide-semiconductor Q1 It is electrically connected respectively with one end of one end of the 19th capacitor C19, the anode of the 6th diode D6 and the first relay RLY1, first The source electrode of metal-oxide-semiconductor Q1 is grounded, the other end of first capacitor C19, the cathode of the 6th diode D6 and the first relay RLY1 it is another One end is electrically connected with the 4th output end 2d of power module 2 respectively, fixing end and the power module 2 of the first control switch 434 4th output end 2d electrical connection, the first relay RLY1 are associated with the first control switch 434, and are based on the first control switch 434 Control whether the first alarm 432 alarms.

25th resistance R25 be connected on photoelectrical coupler 431 the second emitter E 2 and the second metal-oxide-semiconductor Q2 grid it Between, the anode and the second relay with one end of the 20th capacitor C20, the 7th diode D7 respectively that drain of the second metal-oxide-semiconductor Q2 One end of RLY2 is electrically connected, the source electrode ground connection of the second metal-oxide-semiconductor Q2, the yin of the other end of the 20th capacitor C20, the 7th diode D7 The other end of pole and the second relay RLY2 are electrically connected with the 4th output end 2d of power module 2 respectively, the second control switch 435 Fixing end be electrically connected with the 4th output end 2d of power module 2, the second relay RLY2 is associated with the second control switch 435, And control whether the second alarm 433 alarms based on the second control switch 435.

It should be noted that when the first relay RLY1 is in off-position, the movable end of the first control switch 434 with The normal-closed end NC of first alarm 432 is electrically connected, when the first relay RLY1 is in energized state, the first control switch 434 Movable end is electrically connected with the normally open end NO of the first alarm 432.When the second relay RLY2 is in off-position, the second control The movable end of switch 435 is electrically connected with the normal-closed end NC of the second alarm 433, is in energized state in the second relay RLY1 When, 435 movable end of the second control switch is electrically connected with the normally open end NO of the second alarm 433.

In one possible implementation, when the liquid level in metering separator is higher, single chip circuit 42 can be defeated Low level signal is to switching value output circuit 43, when the liquid level in metering separator is in normal range (NR), single chip circuit out 42 can export high level signal to switching value output circuit 43.Switching value output circuit 43 may include two-way warning circuit, It is all the way current warning circuit, is all the way spare warning circuit.When single chip circuit 42 second control signal output end 42j with The first control signal input terminal 43a of switching value output circuit 43 is electrically connected, and the first control letter of switching value output circuit 43 When number input terminal 43a receives low level signal, the first input end IN1 of photoelectrical coupler 431 and the first output end OUT1 are led It is logical, and then make the first collector C1 and the conducting of the first emitter E 1 of photoelectrical coupler 431, the of photoelectrical coupler 431 at this time One emitter E 1 provides high level signal for the grid of the first metal-oxide-semiconductor Q1, so that drain electrode and the source conduction of the first metal-oxide-semiconductor Q1, It is flowed through in this way, having electric current in the first relay RLY1, thus the movable end and the first alarm of the first control switch 434 of control 432 normal-closed end NO electrical connection, and then control the first alarm 432 and alarm.When the first control of switching value output circuit 43 When signal input part 43a processed receives high level signal, the first input end IN1 and the first output end of photoelectrical coupler 431 OUT1 is disconnected, and the first emitter E 1 of photoelectrical coupler 431 provides low level signal for the grid of the first metal-oxide-semiconductor Q1 at this time, the The drain electrode of one metal-oxide-semiconductor Q1 and source electrode disconnect, and flow through in this way, not having electric current in the first relay RLY1, the first control switch 434 Movable end be electrically connected with the normally open end NC of the first alarm 432, and then the first alarm 432 is made to be in mute state.

When the second control signal output end 42j of single chip circuit 42 and the second control signal of switching value output circuit 43 When input terminal 43b is electrically connected, the determination process whether the second alarm 433 alarms can be such as foregoing description, this is practical new Type embodiment is not repeating herein.

For example, the model of photoelectrical coupler 431 can be TLP521-4, the 22nd resistance R22 and the 23rd resistance The resistance value size of R23 all can be 1 kilohm, and the resistance value size of the 24th resistance R24 and the 25th resistance R25 can be with It is 4.3 kilohms, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 all can be NPN type, the 19th capacitor C19 and the 20th capacitors The capacitance size of C20 all can be 0.1 microfarad, the model of the 6th diode D6 and the 7th diode D7 all can be IN4004, The model of first relay RLY1 and the second relay RLY2 all can be double-pole double throw type D62E-S-DC12V, the first alarm 432 and second the model of alarm 433 all can be BJ-1DC12V.

In addition, the well yield for determining the liquid level and oil well of liquidometer detection is transmitted in single chip circuit 42 When display module 5 is shown, in order to which the parameter information for guaranteeing that display module 5 is shown can be read directly, and in switching value Output circuit 43 can carry out noise reduction setting when alarming, and referring to Figure 12, main control module 4 can also include setting circuit 44, setting The first setting end 44a, the second setting end 44b, third setting end 44c, the 4th setting end 44d, the 5th setting end 44e of circuit 44 With the 6th setting end 44f respectively with the first of single chip circuit the setting end 42k, the second setting end 42l, third setting end 42m, the Four setting end 42n, the 5th setting end 42o and the 6th corresponding electrical connection of setting end 42p.

Wherein, when carrying out parameter information setting or noise reduction setting by setting circuit 44, in a kind of possible realization In mode, referring to Figure 13, it may include the first set key S1, the second set key S2, third set key S3, the 4th that circuit 44, which is arranged, Set key S4, the 5th set key S5, the 6th set key S6, the 7th set key S7, the 8th set key S8, the 9th set key S9, the One set key S1 is connected between the P0.0 input/output pin of single-chip microcontroller 421 and P0.3 input/output pin, the second setting Key S2 is connected between the P0.1 input/output pin of single-chip microcontroller 421 and P0.3 input/output pin, third set key S3 It is connected between the P0.2 input/output pin of single-chip microcontroller 421 and P0.3 input/output pin, the 4th set key S4 is connected on Between the P0.0 input/output pin and P0.4 input/output pin of single-chip microcontroller 421, the 5th set key S5 is connected on single-chip microcontroller Between 421 P0.1 input/output pin and P0.4 input/output pin, the 6th set key S6 is connected on single-chip microcontroller 421 Between P0.2 input/output pin and P0.4 input/output pin, the P0.0 that the 7th set key S7 is connected on single-chip microcontroller 421 is defeated Enter/between output pin and P0.5 input/output pin, the 8th set key S8 is connected on the P0.1 input/output of single-chip microcontroller 421 Between pin and P0.5 input/output pin, the 9th set key S9 be connected on single-chip microcontroller 421 P0.2 input/output pin and Between P0.5 input/output pin.

Wherein it is possible to by any set key in the first set key S9 of set key S1~the 9th to the first alarm 432 or Second alarm 433 carries out noise reduction setting, can pass through multiple set keys pair in the first set key S9 of set key S1~the 9th The parameter information shown on display module 5 is configured.

In one possible implementation, the first set key S1 can be multi-functional set key, and the second set key S2 can Think cursor up key or digital increasing key, third set key S3 can be with for setting confirmation command key, the 4th set key S4 For cursor left key, the 5th set key S5 can be confirmation key, and the 6th set key S6 can be cursor right key, the 7th setting Key S7 can limit display screen and extinguish/light key, and the 8th set key S8 can set for cursor down key or digital reducing key, the 9th Set key S9 alarm mute key.

Wherein, the second set key S2, the 4th set key S4, the 5th set key S5, the 6th set key S6 and the 8th set key S8 is for being configured parameter information, and the 9th set key S9 is for disappearing to the first alarm 432 or the second alarm 433 Sound setting.

It is respectively liquidometer, signal conversion circuit, main control module and aobvious by power module in the utility model embodiment Show that module provides power supply, in this way, liquidometer can export different current signals in different liquid levels when detecting liquid level, And it is transmitted to signal conversion circuit.The current signal received is converted to the analog voltage signal of standard by signal conversion circuit, And it is transmitted to main control module.For the ease of automatic processing, the analog voltage signal of standard can be converted to mark by main control module Quasi- digital signal, and analytic operation is carried out to the digital signal of the standard, to determine the liquid level of liquidometer detection, simultaneously Liquid level based on detection calculates the well yield of the oil well be connected with metering separator.Finally, based on display module to true The well yield of fixed liquid level and oil well is shown, the convenience of the one-well metering of oil well is improved.In addition, in determination After liquid level in metering separator, in order to avoid oil liquid spilling, the first report in switching value output circuit can control Alert device or the second alarm are alarmed, to remind operator.In addition, when being shown by display module, in order to protect The parameter information of display can be read directly in card operator, can also be by the way that set key that circuit includes is arranged to the ginseng of display Number information is configured, and improves the efficiency of the one-well metering of oil well.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (10)

1. a kind of oil-measuring apparatus for metering separator, which is characterized in that the oil-measuring apparatus includes: power module, signal Translation circuit, main control module and display module；

First output end of the power module is electrically connected with the input terminal of liquidometer, the second output terminal of the power module with The first input end of the main control module is electrically connected, the third output end of the power module respectively with the main control module the The electrical connection of the power input of two input terminals and the display module, the 4th output end and the signal of the power module become Change the first voltage input terminal electrical connection of circuit；

The current input terminal of the signal conversion circuit is electrically connected with the output end of the liquidometer, the signal conversion circuit Second voltage input terminal is electrically connected with the voltage output end of the main control module, the output end of the signal conversion circuit with it is described The third input terminal of main control module is electrically connected；

The electrical connection of the data input pin of the data output end of the main control module and the display module, the number of the main control module It is electrically connected according to input terminal with the data output end of the display module；

The ground terminal of the power module, the ground terminal of the signal conversion circuit, the ground terminal of the main control module and described The ground terminal of display module is grounded respectively.

2. oil-measuring apparatus as described in claim 1, which is characterized in that the power module includes: power supply, booster circuit, One reduction voltage circuit and the second reduction voltage circuit；

The output end of the power supply respectively with the input terminal of the booster circuit, the input terminal of first reduction voltage circuit and described The first voltage input terminal of signal conversion circuit is electrically connected；

The output end of the booster circuit is electrically connected with the input terminal of the liquidometer；

The output end of first reduction voltage circuit respectively with the input terminal of second reduction voltage circuit and the main control module The electrical connection of one input terminal；

The output end of second reduction voltage circuit electricity with the second input terminal of the main control module and the display module respectively The electrical connection of source input terminal；

The ground terminal of the power supply, the ground terminal of the booster circuit, first reduction voltage circuit ground terminal and described second The ground terminal of reduction voltage circuit is grounded respectively.

3. oil-measuring apparatus as claimed in claim 2, which is characterized in that the booster circuit includes: boost chip, the first electricity Sense, first diode, first resistor, second resistance, the first electrolytic capacitor and the second electrolytic capacitor；

The input pin of the boost chip, one end of first inductance and first electrolytic capacitor anode respectively with institute State the output end electrical connection of power supply, the other end of first inductance respectively with the switch pin of the boost chip and described the The anode of one diode is electrically connected, the cathode of the first diode respectively with one end of the first resistor, second electricity The input terminal of the anode and the liquidometer that solve capacitor is electrically connected；

The one end of the other end of the first resistor respectively with the feedback pin of the boost chip and the second resistance is electrically connected Connect, the cathode of first electrolytic capacitor, the other end of the second resistance, second electrolytic capacitor cathode and the liter The grounding pin of pressure chip is grounded respectively.

4. oil-measuring apparatus as claimed in claim 2, which is characterized in that first reduction voltage circuit include: the first decompression chip, Second diode, third diode, 3rd resistor, the 4th resistance, the 5th resistance, first capacitor, the second capacitor, third capacitor, 4th capacitor, third electrolytic capacitor and the second inductance；

The anode of second diode is connect with the output end of the power supply, the cathode of second diode respectively with it is described The input of one end of first capacitor, one end of second capacitor, one end of the 3rd resistor and the first decompression chip The other end of pin electrical connection, the other end of the first capacitor and second capacitor is grounded respectively, the 3rd resistor The other end is electrically connected with the enabled pin of the first decompression chip；

It is described first decompression chip switch pin respectively with one end of the third capacitor, the third diode cathode and One end of second inductance is electrically connected, and the other end of the third capacitor and the bootlace pin of the first decompression chip are electrically connected Connect, the other end of second inductance respectively with one end of the 4th capacitor, the third electrolytic capacitor positive, described The electrical connection of the input terminal of one end of four resistance and second reduction voltage circuit, the anode of the third diode, the 4th electricity The cathode of the other end of appearance and the third electrolytic capacitor is grounded respectively；

The other end of 4th resistance is depressured the feedback pin of chip with one end of the 5th resistance and described first respectively The grounding pin of electrical connection, the other end of the 5th resistance and the first decompression chip is grounded respectively.

5. oil-measuring apparatus as claimed in claim 2, which is characterized in that second reduction voltage circuit include: the second decompression chip, 5th capacitor, the 6th capacitor and the 4th electrolytic capacitor；

One end output with first reduction voltage circuit respectively of the input pin, the 5th capacitor of the second decompression chip End electrical connection, the grounding pin of the second decompression chip and the other end of the 5th capacitor are grounded respectively；

It is electric with the 4th electrolysis respectively after first output pin of the second decompression chip and the electrical connection of the second output pin One end, the second input terminal of the main control module and the power input of the display module of positive, described 6th capacitor of appearance End electrical connection, the other end of the 6th capacitor and the cathode of the 4th electrolytic capacitor are grounded respectively.

6. oil-measuring apparatus as described in claim 1, which is characterized in that the signal conversion circuit includes: operational amplifier, Six resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, eleventh resistor, twelfth resistor, thirteenth resistor, 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 11st capacitor, the 4th diode and the 5th diode；

One end of 6th resistance and one end of the 7th resistance are electrically connected with the output end of the liquidometer respectively, described The other end of 7th resistance respectively with the cathode of the 4th diode, one end of the 7th capacitor and the operational amplifier one Grade homophase input pin electrical connection, the anode of the 4th diode is electrically connected with the anode of the 5th diode, and described the The other end of the cathode of five diodes, the other end of the 7th capacitor and the 6th resistance is grounded respectively；

8th capacitor and the 8th resistor coupled in parallel, one end of the 8th resistance and the level-one of the operational amplifier are anti- The electrical connection of phase input pin, the other end of the 8th resistance respectively with the level-one output pin of the operational amplifier and described One end of 9th resistance is electrically connected；

Tenth resistance and the 9th capacitor are in parallel, and the eleventh resistor and the tenth capacitor are in parallel, and the described 9th The other end of resistance respectively with one end of the tenth resistance, one end of the eleventh resistor and the operational amplifier two Grade homophase input pin electrical connection, the other end of the tenth resistance are electrically connected with the voltage output end of the main control module, institute State the other end grounding connection of eleventh resistor；

The twelfth resistor and the 11st capacitor are in parallel, one end of the twelfth resistor respectively with the operation amplifier The electrical connection of one end of the second level reversed input pin of device and the thirteenth resistor, the other end of the twelfth resistor respectively with The third input terminal electrical connection of the second level output pin and the main control module of the operational amplifier；

The other end grounding connection of the thirteenth resistor, the voltage input pin of the operational amplifier and the power module The 4th output end electrical connection.

7. oil-measuring apparatus as described in claim 1, which is characterized in that the main control module includes: analog to digital conversion circuit and list Piece electromechanics road；

The first input end of analog-digital conversion circuit as described is electrically connected with the second output terminal of the power module, the analog-to-digital conversion Second input terminal of circuit is electrically connected with the output end of the signal conversion circuit, the voltage output end of analog-digital conversion circuit as described It is electrically connected with the second voltage input terminal of the signal conversion circuit；

The power input of the single chip circuit is electrically connected with the third output end of the power module, the single chip circuit Data output end and the display module data input pin electrical connection, the data input pin of the single chip circuit with it is described The data output end of display module is electrically connected；

The control signal input of analog-digital conversion circuit as described and the first control signal output end of the single chip circuit are electrically connected It connects, the serial clock input terminal of analog-digital conversion circuit as described is electrically connected with the clock signal control terminal of the single chip circuit, institute The serial data input for stating analog to digital conversion circuit is electrically connected with the serial data output terminal of the single chip circuit, the modulus The serial data output terminal of conversion circuit is electrically connected with the serial data input of the single chip circuit, the analog-to-digital conversion electricity The logic output terminal on road is electrically connected with the logic input terminal of the single chip circuit；

The ground terminal and difference analogue negative input end of analog-digital conversion circuit as described and the ground terminal difference of the single chip circuit Ground connection.

8. oil-measuring apparatus as claimed in claim 7, which is characterized in that analog-digital conversion circuit as described includes: analog-digital converter, electricity Press fiducial chip, the first crystal oscillator, the 14th resistance, the 15th resistance, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 15 capacitors and the 16th capacitor；

The difference analogue positive input pin of the analog-digital converter is electrically connected with the output end of the signal conversion circuit, the mould The difference analogue negative input pin of number converter is grounded, one end, one end of the 15th resistance, institute of the 14th resistance State the power input pin of one end of the 14th capacitor, one end of the 15th capacitor and the analog-digital converter respectively with institute State the second output terminal electrical connection of power module, the other end of the 14th resistance and the reset pin of the analog-digital converter Electrical connection, the other end of the 15th resistance become with the benchmark positive input pin of the analog-digital converter, the signal respectively The one end for changing the second voltage input terminal of circuit, the negative electrode pin of the voltage reference chip and the 16th capacitor is electrically connected It connects, the other end of the benchmark negative input pin and grounding pin of the analog-digital converter and the 14th capacitor, described The negative electrode pin of the other end of 15 capacitors, the other end of the 16th capacitor and the voltage reference chip company of ground connection respectively It connects；

One end of 12nd capacitor master clock signal with one end of first crystal oscillator and the analog-digital converter respectively Input pin electrical connection, one end of the 13rd capacitor respectively with the other end and the analog-digital converter of first crystal oscillator The electrical connection of inverting clock signal input pin, the other end point of the other end of the 12nd capacitor and the 13rd capacitor It is not grounded；

The chip select pin of the analog-digital converter is electrically connected with the first control signal output end of the single chip circuit, the mould The serial clock input pin of number converter is electrically connected with the clock signal control terminal of the single chip circuit, the analog-to-digital conversion The serial date transfer pin of device is electrically connected with the serial data output terminal of the single chip circuit, the string of the analog-digital converter Row data output pins are electrically connected with the serial data input of the single chip circuit, the logic output of the analog-digital converter Pin is electrically connected with the logic input terminal of the single chip circuit.

9. oil-measuring apparatus as claimed in claim 7, which is characterized in that the single chip circuit includes: single-chip microcontroller, the second crystalline substance Vibration, the 16th resistance, the 17th resistance, the 18th resistance, the 19th resistance, the 20th resistance, the 21st resistance, the 17th Capacitor, the 18th capacitor, the 5th electrolytic capacitor and reset button；

One end of the reset button, the 5th electrolytic capacitor positive and described single-chip microcontroller power input pin respectively with The third output end of the power module is electrically connected, the other end of the reset button respectively with the 16th resistance one The reset pin electrical connection at end, the cathode of the 5th electrolytic capacitor and the single-chip microcontroller, the other end of the 16th resistance Ground connection；

The reverse phase amplification output pin of the single-chip microcontroller respectively with one end of second crystal oscillator and the 17th capacitor one End electrical connection, the single-chip microcontroller reverse phase amplification input pin respectively with the other end of second crystal oscillator and it is described 18th electricity One end of appearance is electrically connected, the other end, the 18th other end of capacitor and the connecing for the single-chip microcontroller of the 17th capacitor Ground pin is grounded respectively；

17th resistance be connected on the single-chip microcontroller serial data output pin and analog-digital conversion circuit as described it is serial Between data input pin, the 18th resistance be connected on the single-chip microcontroller serial date transfer pin and the analog-to-digital conversion Between the serial data output terminal of circuit, the 19th resistance is connected on clock signal control pin and the institute of the single-chip microcontroller State between the serial clock input terminal of analog to digital conversion circuit, the 20th resistance be connected on the single-chip microcontroller P1.4 input/ Between output pin and the logic output terminal of analog-digital conversion circuit as described, the 21st resistance is connected on the single-chip microcontroller Between P1.0 input/output pin and the control signal input of analog-digital conversion circuit as described；

The data of the single-chip microcontroller send pin and are electrically connected with the data input pin of the display module, the data of the single-chip microcontroller Pin is received to be electrically connected with the data output end of the display module.

10. oil-measuring apparatus as claimed in claim 7, which is characterized in that the main control module further includes switching value output circuit；

The first control signal input terminal or second control signal input terminal of the switching value output circuit and the monolithic are electromechanical The second control signal output end on road is electrically connected, the first voltage input terminal and the power module of the switching value output circuit Second output terminal electrical connection, the third of the second voltage input terminal of the switching value output circuit and the power module exports End electrical connection, the tertiary voltage input terminal of the switching value output circuit are electrically connected with the 4th output end of the power module, The ground terminal of the switching value output circuit is grounded；

The control letter that the second control signal output end that the switching value output circuit is used to receive the single chip circuit is sent Number, and determine whether to alarm based on the control signal.