CN213457709U - General type oil gun signal acquisition device - Google Patents
General type oil gun signal acquisition device Download PDFInfo
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- CN213457709U CN213457709U CN202022273510.XU CN202022273510U CN213457709U CN 213457709 U CN213457709 U CN 213457709U CN 202022273510 U CN202022273510 U CN 202022273510U CN 213457709 U CN213457709 U CN 213457709U
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Abstract
本实用新型涉及一种通用型油枪信号的采集装置，通过设有信号采集单元、信号放大单元和主控单元和通讯单元；所述信号采集单元设有输入端与加油枪状态信号输出端连接实时采集加油枪状态信号，并将加油枪状态信号分成两路：一路信号与所述加油机主板连接为加油机主板提供实时采集的加油枪发送的加油枪状态信号同类型的信号，因此无需对现有的加油机进行改动，适应性强；同时另一路信号输入至信号放大单元后，将加油枪状态信号转换成电平信号输入至所述主控单元，消除了干扰，提高了可靠性。
The utility model relates to a general-purpose oil gun signal acquisition device. The signal acquisition unit is provided with a signal acquisition unit, a signal amplification unit, a main control unit and a communication unit; the signal acquisition unit is provided with an input end which is connected with an oil gun state signal output end. Collect the refueling gun status signal in real time, and divide the refueling gun status signal into two channels: one signal is connected to the main board of the refueling machine to provide the same type of signal of the refueling gun state signal sent by the refueling gun collected in real time for the main board of the refueling machine, so there is no need to The existing refueling machine is modified and has strong adaptability; at the same time, after another signal is input to the signal amplifying unit, the state signal of the refueling gun is converted into a level signal and input to the main control unit, which eliminates interference and improves reliability.
Description
Technical Field
The utility model relates to a filling station's vapor recovery system monitoring technology field, concretely relates to stably acquire the oil gun and carry rifle signal and hang the collection system who robs the general type oil gun signal of signal.
Background
At present, a secondary oil gas recovery monitoring system (hereinafter referred to as a monitoring system) of a gas station has 2 methods for monitoring the completion of primary refueling:
1. the mode of monitoring the pulse signal is adopted. In the mode, the oil flow in the oiling process is converted into a pulse signal by using a flow sensor, the pulse signal output end of the flow sensor is connected with an oiling machine mainboard, the pulse signal is input into the oiling machine mainboard, and the oiling machine mainboard judges whether to finish primary oiling by detecting the generation and disappearance of the pulse signal; for the oiling machine adopting the pulse signal mode, when the oiling gun is in the gun lifting state, a level signal in a low level state is provided; the oiling machine mainboard receives a low level signal, starts oiling machine equipment and prepares for oiling; when the monitoring system acquires a low level signal, the monitoring system judges that the oil gun is in a gun lifting state, namely, one-time oil filling is started; when the fuel truck nozzle is in a gun hanging state, a level signal in a high level state is provided; the oiling machine mainboard receives a high level signal, shuts down oiling machine equipment and stops oiling; the monitoring system judges that the oil gun is in a gun hanging state when acquiring a high level signal, namely, one-time oiling is finished.
2. And a mode of monitoring electromagnetic valve signals is adopted. In the mode, the electromagnetic valve is positioned between the oil gun and the oil pump, a contact is arranged in the electromagnetic valve and used for controlling the start and stop of the oil pump, the contact is connected with an oiling machine mainboard, and the oiling machine mainboard judges whether to finish one-time oiling by detecting the closing or breaking of the contact of the electromagnetic valve. When a fuel gun is in a gun lifting state, the conventional fuel dispenser adopting a solenoid valve signal mode can provide a switch signal in a closed state; the oiling machine mainboard receives a closing switch signal, starts oiling machine equipment and prepares for oiling; the monitoring system judges that the oil gun is in a gun lifting state when acquiring a low level signal, namely, the primary oil filling is started; when the oil gun is in a gun hanging state, a switch signal in a disconnected state can be provided, and the oiling machine mainboard receives the switch signal to turn off oiling machine equipment and stop oiling.
3. The mode of level signal is adopted. In this way, normally, when the fuel nozzle is in the fuel nozzle state, a level signal of a low level state is provided; the oiling machine mainboard receives a low level signal, starts oiling machine equipment and prepares for oiling; when the monitoring system acquires a low level signal, the monitoring system judges that the oil gun is in a gun lifting state, namely, one-time oil filling is started; when the fuel truck nozzle is in a gun hanging state, a level signal in a high level state is provided; the oiling machine mainboard receives a high level signal, shuts down oiling machine equipment and stops oiling; the monitoring system judges that the oil gun is in a gun hanging state when acquiring a high level signal, namely, one-time oiling is finished.
According to the monitoring method, in the refueling process, due to human reasons or mechanical reasons, a plurality of problems exist:
1. in the process of refueling, when refueling is suspended, a pulse signal or an electromagnetic valve signal is interrupted (namely an error signal of pseudo refueling ending is generated), and at the moment, a monitoring system mistakenly considers that one-time refueling is ended and stores related refueling information; when the refueling is continued, the pulse signal or the electromagnetic valve signal is regenerated (namely an error signal for false refueling is generated), at the moment, the monitoring system mistakenly begins new refueling, and relevant refueling information is recorded again after zero clearing, so that the problem that the monitoring system mistakenly judges two times of refueling as one time of refueling is caused. Theoretically, the method of monitoring the pulse signal or the electromagnetic valve signal to judge whether the one-time refueling is finished cannot fundamentally avoid the problems.
2. The oil gun signal has the phenomenon of diversified signal types (including switching signals and level signals) and different signal strengths due to different types of oiling machines, and further faults are frequently caused by the fact that the oil gun signal cannot be normally acquired in the oiling process. For example, in the process of one-time refueling, the monitoring system fails to normally acquire a lance lifting signal due to a weak lance signal, the monitoring system mistakenly considers that refueling does not start, and fails to timely monitor related refueling information, so that the problems of delay and disorder of refueling information are caused. For another example, the monitoring system may fail to normally acquire a gun hanging signal due to a weak oil gun signal, mistakenly think that refueling is not finished, and continue to accumulate relevant refueling information after the second refueling is started, resulting in the problem that the monitoring system mistakenly judges two refuelings as one refueling.
Aiming at the problem that the existing oil gun signals are different in diversity and strength and cannot be normally acquired, so that faults occur frequently, a stable, reliable and universal oil gun signal acquisition device is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art and provide a compatible level signal type, switch signal type signal, and need not to change the original signal that the tanker aircraft mainboard acquireed the nozzle, can reliably and stably acquire the nozzle and carry the rifle, hang the collection system who robbes the general type nozzle signal of signal.
In order to achieve the above object, the utility model discloses a collection system of general type oil gun signal, its characterized in that: the system comprises a power supply unit, a signal acquisition unit, a signal amplification unit, a pair of signal input ends and a pair of oil gun state signal output ends, wherein the signal input ends are used for being connected with an oil gun state signal output end; the pair of signal input ends is connected with the pair of oil gun state signal output ends to form one path of oil gun state signal transmission; the signal acquisition unit comprises a second switch triode, a grid current-limiting resistor and a second load resistor, the second switch triode is a field effect transistor, the drain electrode of the second switch triode is connected with the positive electrode of the direct-current working power supply through the second load resistor, the source electrode of the second switch triode is connected with the negative electrode input end of the signal and the negative electrode of the direct-current working power supply, the grid electrode of the second switch triode is connected with the positive electrode input end of the signal through the grid current-limiting resistor, and the drain electrode of the second switch triode is the output end of the signal acquisition unit and forms the other path of oil gun state signal transmission to be connected with the input end of; the signal amplification unit is composed of a level conversion circuit and converts a fuel nozzle state signal into a standard signal for output; the power supply unit provides a direct current working power supply for the signal acquisition unit and the signal amplification unit.
Compared with the prior art, the universal oil gun signal acquisition device is provided with a signal acquisition unit, a signal amplification unit, a main control unit and a communication unit; the signal acquisition unit is equipped with the input and is connected with nozzle status signal output and gather nozzle status signal in real time to divide into two the nozzle status signal: one path of signal is connected with the oiling machine mainboard to provide a signal which is acquired in real time and is of the same type as a refueling gun state signal sent by a refueling gun for the oiling machine mainboard, so that the existing oiling machine is not required to be changed, and the adaptability is strong; meanwhile, after the other path of signal is input to the signal amplification unit, the state signal of the oil gun is converted into a level signal to be input to the main control unit, so that interference is eliminated, and reliability is improved.
As the utility model discloses further set up, the signal amplification unit includes biasing resistance, first load resistance and first switch triode, the collecting electrode of first switch triode is connected with the direct current working power supply positive pole through first load resistance, and the projecting pole is connected with the direct current working power supply negative pole, the base through go up biasing resistance with second switch triode drain electrode is connected, the process simultaneously second load resistance is connected with the direct current working power supply positive pole, the collecting electrode of first switch triode constitutes the output of signal amplification unit.
As the utility model discloses further set up, the collection system of general type oil gun signal still is equipped with the main control unit, the output of signal amplification unit with the main control unit is connected, with oil gun state signal input extremely the main control unit.
As the utility model discloses further set up, the collection system of general type oil gun signal still is equipped with the communication unit, the main control unit handles the back to the communication unit, process to the nozzle state signal of input the communication unit conveys nozzle state information to outside monitored control system.
As the utility model discloses further set up, the collection system of general type oil gun signal still is equipped with the casing, and each unit circuit setting is in the casing, the casing is equipped with three export, supplies respectively a pair ofly be used for with nozzle status signal output a pair ofly pass with the output of outside tanker aircraft mainboard connection's nozzle status signal output and communication unit.
As the utility model discloses further set up, the collection system of general type oil gun signal still is equipped with the casing, and each unit circuit setting is in the casing, the casing is equipped with three export, supplies respectively a pair ofly be used for with nozzle status signal output a pair ofly pass with the output of outside tanker aircraft mainboard connection's nozzle status signal output and signal amplification unit.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of the communication unit of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of the power supply unit of the present invention;
fig. 5 is a schematic view of an embodiment of the housing of the present invention;
fig. 6 is a sectional view of the internal structure of the embodiment of the housing according to the present invention.
Detailed Description
As shown in figure 1, the utility model discloses the collection system of general type oil gun signal includes electrical unit, signal acquisition unit and signal amplification unit and a pair of signal input part that is used for being connected with oil gun state signal output part and a pair of oil gun state signal output part of being connected with outside tanker aircraft mainboard. The signal acquisition unit is equipped with the nozzle status signal output end of input and nozzle and is connected and gather nozzle status signal in real time to divide into two tunnel with nozzle status signal: one path of signal is connected with the oiling machine mainboard to provide a oiling gun state signal (namely an unprocessed original level signal or a processed switch signal of the same type) of the same type as the acquired signal in real time for the oiling machine mainboard, and the other path of signal is input into the signal amplification unit which converts the oiling gun state signal into a standard digital level signal and outputs the standard digital level signal; the fuel gun state signal output end can be a level signal or a switch contact signal; as shown in fig. 4, the power supply unit adopts a three-terminal voltage stabilization chip T1 and a filter capacitor to form a voltage stabilization dc power supply circuit, and the power supply unit provides a dc working power supply Vcc for the signal acquisition unit and the signal amplification unit.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the preferred embodiments of the present application and the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 2, in this embodiment, the device for acquiring a signal of a general oil gun includes a power supply unit, a signal acquisition unit, and a signal amplification unit. The pair of signal input ends (respectively a signal positive input end and a signal negative input end) and the pair of oil gun state signal output ends are directly connected to form one path of oil gun state signal transmission of the same type; the signal amplification unit is composed of a level conversion circuit, that is, an input level within a certain range is converted into a uniform high level output, and an input low level below the certain range is converted into a uniform low level output, but the opposite is also possible. In this embodiment, the signal acquisition unit includes second switch triode Q2, grid current-limiting resistor R3 and second load resistance R4, second switch triode Q2 is N channel type field effect transistor, second switch triode Q2 drain electrode process second load resistance R4 is connected with direct current working power supply Vcc positive pole, second switch triode Q2 source is connected with signal negative pole input and direct current working power supply Vcc negative pole, the grid process with grid current-limiting resistor R3 with signal positive pole input connection, the drain electrode is the output of signal acquisition unit constitutes another way of oil gun state signal transmission.
The signal amplifying unit comprises an upper bias resistor R1, a first load resistor R2, a filter capacitor C5 and a first switching triode Q1, the first switching triode Q1 is NPN type, the collector of the first switching triode Q1 is connected with the positive pole of a direct current working power supply Vcc through a first load resistor R2, the emitter is connected with the negative pole of the direct current working power supply Vcc, one path of the base is connected with the collector of the second switching triode Q2 through an upper bias resistor R1, and is connected with the positive electrode of the direct current working power supply Vcc through the second load resistor R4 to form a level switching circuit with a switching triode as a core (of course, the first switching triode Q1 may also be PNP type), the collector of the first switching triode Q1 forms the output end of the signal amplifying unit, in order to improve the anti-interference capability, the base of the first switching transistor Q1 is preferably provided with another path of connection with the negative electrode of the direct-current working power supply Vcc through a filter capacitor C5.
In order to more reliably transmit the information of the fuel dispenser to an external monitoring system, the universal fuel gun signal acquisition device is preferably further provided with a main control unit and a communication unit, as shown in fig. 3, an output end of the signal amplification unit is connected with the main control unit, in this specific embodiment, an output end of the signal amplification unit formed by a collector of the first switching triode Q1 is connected with the main control unit, the main control unit processes the input converted fuel gun state signal, inputs the signal to the communication unit, and transmits the information of the fuel dispenser to the external monitoring system through the communication unit; the main control unit is composed of a data processing circuit composed of a microprocessor and peripheral elements thereof; the communication unit is composed of an asic chip and its peripheral components, as shown in fig. 4, in this embodiment, a 485 chip may be used to obtain more reliable transmission characteristics.
For convenience of use and installation and maintenance, the device for acquiring signals of the universal oil gun is preferably further provided with a housing 1, each unit circuit is arranged in the housing 1, and as shown in fig. 5 and 6, the housing is provided with three outlets: the pair of the oil gun state signal output ends used for being connected with the oil gun state signal output end, the pair of the oil gun state signal output ends connected with the external oiling machine mainboard and the output end of the signal amplification unit or (a communication unit signal line) respectively pass through the oil gun connecting port 101, the oiling machine connecting port 102 and the communication connecting port 103.
The specific working principle of the acquisition device of the universal oil gun signal is as follows:
in the existing fuel dispenser, for the fuel dispenser in a level signal mode, when a fuel gun is in a lifting gun state, a level signal in a low level state is provided at the pair of signal input ends, and for the fuel dispenser in a solenoid valve signal mode, when the fuel gun is in the lifting gun state, a switch signal in a closed state is provided at the pair of signal input ends; for the oiling machine adopting the level signal mode, when the oil gun is in the gun hanging state, the pair of signal input ends can provide a level signal in a high level state, and for the oiling machine adopting the electromagnetic valve signal mode, when the oil gun is in the gun hanging state, a voltage difference exists between the pair of oil gun state signal output ends connected to the mainboard of the oiling machine.
As shown in fig. 3, for the level signal type fuel dispenser, when the fuel dispenser is lifted, the pair of signal input terminals (joint J1) inputs a low level signal, and one path of the input low level signal is directly transmitted to the pair of fuel dispenser status signal output terminals to be connected (joint J2), that is, the fuel dispenser main board directly adds the fuel dispenser main board and outputs the fuel dispenser status signal of the same type, that is, outputs a low level signal, and the fuel dispenser main board starts fuel dispenser equipment to prepare for fuel dispensing; meanwhile, the other path of the input low-level signal is transmitted to the gate of the second switching triode Q2 through the gate limiting resistor R3, at this time, the second switching triode Q2 is cut off, and the drain is at a high level. The high level of the drain electrode of the second switching triode Q2 is transmitted to the base pin of the first switching triode Q1 through the upper biasing resistor R1, at the moment, the first switching triode Q1 is conducted, the fuel gun state signal input end (input port S _ OG) of the main control unit is pulled down to be a low level signal from the original high level, the main control unit judges the start of refueling, related information is transmitted to the monitoring system through the communication unit and the data transmission interface J3, the monitoring system can stably obtain a gun lifting signal of the fuel gun, and the start of refueling is judged.
When the oil gun is hung back, a high level signal is input into the pair of signal input ends (the joint J1), one path of the input high level signal is directly transmitted to the pair of oil gun state signal output ends to be connected (the joint J2), namely, the oil gun state signals of the same type are directly added to the oil gun main board, namely, a high level signal is output, the oil gun main board closes the oil gun device, and the oil gun stops oiling; meanwhile, the other path of the input high-level signal is transmitted to the gate of the second switching triode Q2 through the gate limiting resistor R3, at this time, the second switching triode Q2 is turned on, and the drain is at a low level. The low level of the drain electrode of the second switching triode Q2 is transmitted to the base pin of the first switching triode Q1 through the upper biasing resistor R1, at the moment, the first switching triode Q1 is cut off, the input port S _ OG of the main control unit is pulled to a high level signal from the original low level, the main control unit judges that oiling is finished, related information is transmitted to the monitoring system through the communication unit and the data transmission interface J3, the monitoring system can stably obtain a gun hanging signal of the oiling gun, and the finish of one-time oiling is judged.
For the oiling machine adopting the electromagnetic valve signal mode, when the gun is lifted, the pair of signal input ends (the joint J1) are grounded in a closed mode and are in a low level, one path of the input low level signal is directly transmitted to the pair of oil gun state signal output ends to be connected (the joint J2), namely, the oil machine main board is directly added to output the oil gun state signals of the same type, namely, one low level signal is output, and the oiling machine main board starts oiling machine equipment to prepare for oiling; meanwhile, the other path of the input low-level signal is transmitted to the gate of the second switching triode Q2 through the gate limiting resistor R3, at this time, the second switching triode Q2 is cut off, and the drain is at a high level. The high level of the drain electrode of the second switching triode Q2 is transmitted to the base pin of the first switching triode Q1 through the upper biasing resistor R1, at the moment, the first switching triode Q1 is conducted, the fuel gun state signal input end (input port S _ OG) of the main control unit is pulled down to be a low level signal from the original high level, the main control unit judges the start of refueling, related information is transmitted to the monitoring system through the communication unit and the data transmission interface J3, the monitoring system can stably obtain a gun lifting signal of the fuel gun, and the start of refueling is judged.
When the fuel guns are hung back, the pair of signal input ends (the joint J1) is disconnected, the voltage difference between the two ends of the pair of fuel gun state signal output ends (the joint J2) connected with the fuel dispenser mainboard is high level, a high level signal is also arranged between the pair of signal input ends (the joint J1), one path of the input high level signal is directly transmitted to the pair of fuel gun state signal output ends to be connected (the joint J2), namely the fuel dispenser mainboard directly outputs the same type of fuel gun state signals, namely outputs a high level signal, the fuel dispenser mainboard shuts down fuel dispenser equipment, and stops fuel filling; meanwhile, the other path of the input high-level signal is transmitted to the gate of the second switching triode Q2 through the gate limiting resistor R3, at this time, the second switching triode Q2 is turned on, and the drain is at a low level. The low level of the drain electrode of the second switching triode Q2 is transmitted to the base pin of the first switching triode Q1 through the upper biasing resistor R1, at the moment, the first switching triode Q1 is cut off, the input port S _ OG of the main control unit is pulled to a high level signal from the original low level, the main control unit judges that oiling is finished, related information is transmitted to the monitoring system through the communication unit and the data transmission interface J3, the monitoring system can stably obtain a gun hanging signal of the oiling gun, and the finish of one-time oiling is judged.
Therefore, the general oil gun signal acquisition device does not need to change the original signal of the oiling machine mainboard for acquiring the oil gun, is compatible with the level signal type and the switch signal type signal, and can stably and reliably acquire the universal oil gun signal acquisition device for lifting the oil gun and hanging the robbery signal of the oil gun.
In order to more reliably transmit the information of the fuel dispenser to an external monitoring system, the universal fuel gun signal acquisition device is preferably further provided with a main control unit and a communication unit, wherein an output end of the signal amplification unit is connected with the main control unit, in this specific embodiment, an output end of the signal amplification unit formed by a collector of the first switching triode Q1 is connected with the main control unit, a fuel gun state signal is converted into a standard signal and is input into the main control unit, the main control unit processes the input converted fuel gun state signal and then inputs the signal into the communication unit, and the information of the fuel dispenser is transmitted to the external monitoring system through the communication unit.
The main control unit is composed of a data processing circuit composed of a microprocessor and peripheral elements thereof; the communication unit is composed of an asic chip and its peripheral components, as shown in fig. 4, in this embodiment, a 485 chip may be used to obtain more reliable transmission characteristics.
For convenience of use and installation and maintenance, the device for acquiring signals of the universal oil gun is preferably further provided with a shell 1, each unit circuit is arranged in the shell 1, and as shown in fig. 6, the shell is provided with three outlets: the pair of the oil gun state signal output ends used for being connected with the oil gun state signal output end, the pair of the oil gun state signal output ends connected with the external oiling machine mainboard and the output end of the signal amplification unit or (a communication unit signal line) respectively pass through the oil gun connecting port 101, the oiling machine connecting port 102 and the communication connecting port 103.
The above examples are merely illustrative for clarity and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (6)
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| CN112269334A (en) * | 2020-10-13 | 2021-01-26 | 浙江瑞森路政设施有限公司 | A universal oil gun signal acquisition device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A general oil gun signal acquisition device Effective date of registration: 20210915 Granted publication date: 20210615 Pledgee: Industrial Bank Limited by Share Ltd. Wenzhou Yueqing branch Pledgor: ZHEJIANG RESIN MUNICIPAL FACILITY Co.,Ltd. Registration number: Y2021330001639 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210615 Pledgee: Industrial Bank Limited by Share Ltd. Wenzhou Yueqing branch Pledgor: ZHEJIANG RESIN MUNICIPAL FACILITY Co.,Ltd. Registration number: Y2021330001639 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A universal oil gun signal acquisition device Granted publication date: 20210615 Pledgee: Bank of Wenzhou Limited by Share Ltd. Yueqing branch Pledgor: ZHEJIANG RESIN MUNICIPAL FACILITY Co.,Ltd. Registration number: Y2025330000077 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |