CN105716674B - Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter - Google Patents
Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter Download PDFInfo
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- CN105716674B CN105716674B CN201610246863.6A CN201610246863A CN105716674B CN 105716674 B CN105716674 B CN 105716674B CN 201610246863 A CN201610246863 A CN 201610246863A CN 105716674 B CN105716674 B CN 105716674B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
Abstract
The invention relates to the field of gas metering, in particular to an ultrasonic transmission time correction method and system of an ultrasonic flowmeter and the flowmeter. The ultrasonic sending time correction method of the ultrasonic flowmeter provided by the invention determines that the first ultrasonic pulse which can be received in actual measurement is the second ultrasonic pulse sent by the ultrasonic transducer by sequentially increasing or decreasing the number of the ultrasonic pulses sent each time, thereby determining the actual sending time of the effective ultrasonic pulse, and avoiding the measurement error caused by taking the sending time of the first ultrasonic pulse sent by the ultrasonic transducer as the starting time of the measurement in the prior art.
Description
Technical Field
The invention relates to the field of gas metering, in particular to an ultrasonic transmission time correction method and system of an ultrasonic flowmeter and the flowmeter.
Background
The basic working principle of the existing ultrasonic flowmeter is that two ultrasonic transducers are arranged, the flow velocity of fuel gas is judged by measuring the propagation time of ultrasonic waves in flowing fuel gas, and then the flow of the fuel gas is calculated; however, in practical applications, as shown in fig. 5, the amplitude of the ultrasonic pulse emitted by the ultrasonic transducer at the initial stage after each start-up gradually changes from small to large until stable; in the ultrasonic flowmeter, the ultrasonic waves with smaller initial transmitted wave amplitude cannot be smoothly propagated to another ultrasonic transducer due to small energy, and thus cannot be received and recorded, which results in that although the system can record the initial time of transmitting the ultrasonic waves by the transducer, the system cannot judge that the first received effective ultrasonic waves are the second pulses transmitted by the transducer (different gas components and different working environments cause the first received pulses to be different), so that the system cannot determine the transmission time of the first received effective ultrasonic waves, and further causes errors in the whole measuring process.
Disclosure of Invention
The invention aims to overcome the problems that in the existing ultrasonic flowmeter, small-energy ultrasonic waves sent at the initial stage when an ultrasonic transducer is started each time cannot be received, and meanwhile, a system cannot judge that the received first ultrasonic wave is the second wave sent by the transducer, so that the sending time of the first effective ultrasonic wave cannot be determined, and provides an ultrasonic wave sending starting time correction method for determining that the received first effective ultrasonic wave is the second wave sent by the transducer, so as to determine the actual starting sending time of the effective ultrasonic wave, and in order to achieve the purpose, the invention provides the following technical scheme:
an ultrasonic transmitting time correction method of an ultrasonic flowmeter sets a transmitting pulse number value N, wherein the initial value of N is a natural number below 4, and the correction comprises the following steps:
(1-1) the ultrasonic transducer sends N ultrasonic pulses; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is not received, the step (1-2) is carried out;
(1-2) adding one to the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic wave is received or not, if not, repeating the step until the ultrasonic wave is received, wherein the current value of N is the first ultrasonic pulse which can be received, namely the Nth ultrasonic pulse is the first ultrasonic pulse which can be received; then, in normal ultrasonic gas measurement, we know that, in a measurement process, the sending time of the nth (where N is a result value obtained by the present method) ultrasonic pulse is the real measurement starting time, and the first N-1 ultrasonic waves are not received due to too small energy.
The invention also provides another ultrasonic transmission time correction method of the ultrasonic flowmeter, which sets a transmission pulse number value N, wherein the initial value of N is a natural number more than 6, and the correction comprises the following steps:
(2-1) the ultrasonic transducer transmitting N ultrasonic pulses; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is received, entering the step (2-2);
(2-2) subtracting one from the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic waves are received or not, if so, repeating the step until no ultrasonic waves are received; the (current value of N plus one) ultrasound pulse is the first ultrasound pulse that can be received.
The invention also provides a method for correcting the ultrasonic transmission time of the ultrasonic flowmeter, which sets an initial value random natural number of a transmission pulse number value N, and the correction comprises the following steps:
(3-1) the ultrasonic transducer sends N ultrasonic pulses; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is not received, the step (3-2) is carried out, and if the ultrasonic wave is received, the step (3-3) is carried out;
(3-2) adding one to the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic wave is received or not, if not, repeating the step until the ultrasonic wave is received, wherein the Nth ultrasonic pulse is the first ultrasonic pulse which can be received;
(3-3) subtracting one from the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic waves are received or not, if so, repeating the step until no ultrasonic waves are received; the N +1 th ultrasonic pulse is the first ultrasonic pulse that can be received.
Further, an ultrasonic amplitude threshold M is set, and only if the amplitude of the received ultrasonic wave exceeds the ultrasonic amplitude threshold M, the ultrasonic wave is considered to be received (may also be referred to as a valid ultrasonic wave).
The invention also provides an ultrasonic transmission time correction system of the ultrasonic flowmeter, which comprises a transmission pulse number value setting module, a transmission control module and a receiving judgment module;
a sending pulse number value N is set in the sending pulse number value setting module, and the initial value of N is a natural number;
the sending control module is connected with the first ultrasonic transducer and used for controlling the first ultrasonic transducer to send N ultrasonic pulses according to the N value;
the receiving and judging module is connected with the second ultrasonic transducer and used for judging whether the second ultrasonic transducer receives ultrasonic waves or not and controlling the sending period setting module to add one or subtract one to the number value of the sending pulse according to the judging result.
If the first ultrasonic transducer sends the ultrasonic pulse, and if the second ultrasonic transducer does not receive the ultrasonic wave, the sending pulse number value setting module adds one to the value of N, and the sending control module controls the first ultrasonic transducer to send N ultrasonic pulses according to the corrected value of N; if the second ultrasonic transducer still does not receive the ultrasonic wave, the sending period setting module adds one to the value N again, and the process is repeated until the second ultrasonic transducer can receive the ultrasonic wave, and then the current value of N is the first ultrasonic pulse which can be received, that is, the nth ultrasonic pulse is the first ultrasonic pulse which can be received.
If the second ultrasonic transducer can receive the ultrasonic wave after the first ultrasonic transducer transmits the ultrasonic wave, the transmission period setting module subtracts one from the value of N, and the transmission control module controls the first ultrasonic transducer to transmit N ultrasonic pulses according to the corrected value of N; if the second ultrasonic transducer can still receive the ultrasonic wave, the sending period setting module decreases the value of N by one again, and the process is circulated until the second ultrasonic transducer cannot receive the ultrasonic wave, and the current value of N is added by one to be the first received ultrasonic wave period.
Further, the ultrasonic wave detection device further comprises an amplitude threshold setting module, wherein an ultrasonic wave amplitude threshold M is set in the amplitude threshold setting module, and the ultrasonic wave is determined to be received (or valid ultrasonic wave is received) only when the amplitude of the ultrasonic wave received by the second ultrasonic transducer exceeds the threshold M.
The invention also provides an ultrasonic flowmeter, which comprises the ultrasonic transmission time correction system of the ultrasonic flowmeter.
Compared with the prior art, the invention has the beneficial effects that: the ultrasonic sending time correction method of the ultrasonic flowmeter provided by the invention determines that the first ultrasonic pulse which can be received in actual measurement is the second ultrasonic pulse sent by the ultrasonic transducer by sequentially increasing or decreasing the number of the ultrasonic pulses sent each time, thereby determining the actual sending time of the effective ultrasonic pulse, and avoiding the measurement error caused by taking the sending time of the first ultrasonic pulse sent by the ultrasonic transducer as the starting time of the measurement in the prior art.
Description of the drawings:
fig. 1 is a flowchart of a transmission time correction method according to the present invention.
Fig. 2 is a flowchart of another embodiment of a method for correcting transmission time according to the present invention.
Fig. 3 is a flowchart of another embodiment of a method for correcting transmission time according to the present invention.
Fig. 4 is a schematic block diagram of a transmission time correction system according to the present invention.
Fig. 5 is a schematic diagram of the ultrasonic transducer sending the amplitude of the ultrasonic pulse from the beginning to the stabilization.
Fig. 6 is a typical pulse trend graph sent or received by an ultrasonic transducer during normal measurement.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1: as shown in fig. 1, this embodiment provides an ultrasonic transmission time correction method for an ultrasonic flow meter, setting a number N of transmission pulses, where the initial value of N is a natural number below 4, and in this embodiment, the initial value of N is set to 1 (since the first pulse is not received in general, the initial value may be set directly to a natural number smaller than 2, 3, 4, or even 5); the correction comprises the following steps:
s101: the ultrasonic transducer sends 1 ultrasonic pulse; judging whether the ultrasonic wave is received or not; if not, the step S102 is executed;
s102: adding one to the N value (i.e., N = N + 1), and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic wave is received or not, if not, repeating the step until the ultrasonic wave is received, wherein the current value of N is the first ultrasonic pulse which can be received, namely the Nth ultrasonic pulse is the first ultrasonic pulse which can be received; then, in normal ultrasonic gas measurement, we know that, in a measurement process, the sending time of the nth (where N is a result value obtained by the present method) ultrasonic pulse is the real measurement starting time, and the first N-1 ultrasonic waves are not received due to too small energy.
When the ultrasonic gas flowmeter is applied to the method provided by the embodiment, after the flowmeter is installed and gas normally flows through, the ultrasonic transducer is controlled to send 1 pulse of ultrasonic waves, and generally, the ultrasonic pulse cannot be received by the other ultrasonic transducer due to the small amplitude of the ultrasonic pulse sent by the ultrasonic transducer in the initial state and the blocking effect of the gas; at this point, the ultrasound transducer sends 2 pulses of ultrasound, checks whether it can be received, and so on, until another ultrasound transducer can receive the pulses, assuming, when the ultrasound transducer sends only one pulse, it cannot be received, and likewise, only two pulses are sent, and we also assume that when the ultrasound transducer sends three pulses at a time, the other ultrasonic transducer can successfully receive the pulse signal, so that we can deem that, under the current gas composition and the current working environment, the first two pulses sent by each ultrasonic transducer cannot be received, so in the measurement process after that, as shown in fig. 5, it is considered that the start time of each ultrasonic measurement is not the time T0 when the ultrasonic transducer starts to transmit ultrasonic waves, but the time T1 when the ultrasonic transducer transmits a third ultrasonic pulse.
Further, an ultrasonic amplitude threshold M is set, and only if the amplitude of the received ultrasonic wave exceeds the ultrasonic amplitude threshold M, the ultrasonic wave is considered to be received (may also be referred to as a valid ultrasonic wave). This is because in some cases the amplitude of the first received ultrasonic pulse is still small (e.g. pulse 3 in fig. 5), i.e. although it can be received, it may be more susceptible to noise due to its smaller energy, thus causing errors in the measurement calculation, therefore, we usually set an ultrasonic amplitude threshold M, and we will consider it as a valid ultrasonic only if the amplitude of the received ultrasonic pulse exceeds M, and as also shown in fig. 5, although it may be that pulse 3 can be received, but since its amplitude is smaller than the threshold M, we will discard it, but consider it as a valid pulse starting from pulse 4 whose amplitude exceeds the threshold M, i.e. we consider the time T2 at which the ultrasonic transducer transmits the fourth ultrasonic pulse as the starting time for measurement.
In fact, during normal measurement, the ultrasonic transducer does not transmit pulse waves with infinite length, but transmits a specified number of pulse waves (e.g. 11 pulse waves in fig. 6) as shown in fig. 6, and at the receiving end, only a part of the pulse waves may be received (e.g. only pulse 3 to pulse 9 in fig. 6), and after setting the threshold M for interference elimination, we only select pulses with amplitude higher than the threshold M for use (e.g. pulse 4 to pulse 9 in fig. 6), thereby maximally ensuring the measurement accuracy.
Example 2: as shown in fig. 2, this embodiment provides another method for correcting the ultrasonic transmission time of an ultrasonic flowmeter, in which a transmission pulse number N is set, and the initial value of N is a natural number greater than 6, for example, the value may be set to be a natural number greater than 6, 9, 12, or even 15; the correction comprises the following steps:
s201: the ultrasonic transducer sends N ultrasonic pulses; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is received, the process proceeds to step S202;
s202: subtracting one from the N value, and sending N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic waves are received or not, if so, repeating the step until no ultrasonic waves are received; the (current value of N plus one) ultrasound pulse is the first ultrasound pulse that can be received.
Further, an ultrasonic amplitude threshold M is set, and only if the amplitude of the received ultrasonic wave exceeds the ultrasonic amplitude threshold M, the ultrasonic wave is considered to be received (may also be referred to as a valid ultrasonic wave).
Example 3: as shown in fig. 3, in this embodiment, a sending pulse number N is arbitrarily set, and the calibration includes the following steps:
s301: the ultrasonic transducer sends N ultrasonic pulses; judging whether the ultrasonic wave is received or not; if no ultrasonic wave is received, the process proceeds to step S302, and if received, the process proceeds to step S303;
s302: adding one to the N value, and sending N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic wave is received or not, if not, repeating the step until the ultrasonic wave is received, wherein the Nth ultrasonic pulse is the first ultrasonic pulse which can be received;
s303: subtracting one from the N value, and sending N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic waves are received or not, if so, repeating the step until no ultrasonic waves are received; the N +1 th ultrasonic pulse is the first ultrasonic pulse that can be received.
Example 4: as shown in fig. 4, the present embodiment provides an ultrasonic transmission time correction system for an ultrasonic flowmeter, which includes a transmission pulse number setting module 100, a transmission control module 200, and a reception judgment module 300;
a transmission pulse number value N is set in the transmission pulse number value setting module 100, and an initial value of N is a natural number;
the sending control module 200 is connected to the first ultrasonic transducer, and is configured to control the first ultrasonic transducer to send N ultrasonic pulses according to the N value;
the receiving and determining module 300 is connected to the second ultrasonic transducer, and is configured to determine whether the second ultrasonic transducer receives ultrasonic waves, and control the sending period setting module to add one or subtract one to the number of sending pulses according to the determination result.
If the first ultrasonic transducer transmits an ultrasonic pulse, if the second ultrasonic transducer does not receive the ultrasonic pulse, the transmit pulse number setting module 100 adds one to the value of N, and the transmit control module 200 controls the first ultrasonic transducer to transmit N ultrasonic pulses according to the corrected value of N; if the second ultrasonic transducer still does not receive the ultrasonic wave, the sending period setting module adds one to the value N again, and the process is repeated until the second ultrasonic transducer can receive the ultrasonic wave, and then the current value of N is the first ultrasonic pulse which can be received, that is, the nth ultrasonic pulse is the first ultrasonic pulse which can be received.
If the second ultrasonic transducer can receive the ultrasonic wave after the first ultrasonic transducer transmits the ultrasonic wave, the transmission period setting module decreases the value of N by one, and the transmission control module 200 controls the first ultrasonic transducer to transmit N ultrasonic pulses according to the corrected value of N; if the second ultrasonic transducer can still receive the ultrasonic wave, the sending period setting module decreases the value of N by one again, and the process is circulated until the second ultrasonic transducer cannot receive the ultrasonic wave, and the current value of N is added by one to be the first received ultrasonic wave period.
Further, the ultrasonic wave receiving device further comprises an amplitude threshold setting module, wherein an ultrasonic wave amplitude threshold M is set in the amplitude threshold setting module, and the ultrasonic wave amplitude threshold M is determined to be received (or received valid ultrasonic wave) only when the ultrasonic wave amplitude received by the second ultrasonic transducer exceeds the threshold M, and the threshold M can be generally set to 70% -90% of the peak after the ultrasonic pulse amplitude sent by the ultrasonic transducer is stable (such as pulse 5 to pulse 10 in fig. 5).
Example 5: this embodiment provides an ultrasonic flow meter including the ultrasonic transmission time correction system of the ultrasonic flow meter as provided in embodiment 4.
Claims (7)
1. An ultrasonic transmission time correction method of an ultrasonic flowmeter is characterized in that the number N of primary transmission pulses is set, the initial value of N is a natural number below 4, and the correction comprises the following steps:
(1-1) the ultrasonic transducer sends N ultrasonic pulses at a time; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is not received, the step (1-2) is carried out;
(1-2) adding one to the N value, and entering the step (1-1), and sending N ultrasonic pulses according to the corrected N value; and repeating the steps until the ultrasonic wave is received, wherein the Nth ultrasonic wave pulse is the first ultrasonic wave pulse which can be received.
2. An ultrasonic transmission time correction method for an ultrasonic flowmeter, wherein a number of pulses N to be transmitted at a time is set to an initial value of 6 or more natural numbers, and the correction includes the steps of:
(2-1) the ultrasonic transducer sends N ultrasonic pulses at a time; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is received, entering the step (2-2);
(2-2) subtracting one from the N value, and entering the step (2-1), and sending N ultrasonic pulses according to the corrected N value; repeating the steps until no ultrasonic wave is received; the N +1 th ultrasonic pulse is the first ultrasonic pulse that can be received.
3. An ultrasonic transmission time correction method of an ultrasonic flowmeter is characterized in that the method sets any natural number of initial values of N, N of the number of once-transmitted pulses, and the correction comprises the following steps:
(3-1) the ultrasonic transducer sends N ultrasonic pulses at a time; judging whether the ultrasonic wave is received or not; if the ultrasonic wave is not received, the step (3-2) is carried out, and if the ultrasonic wave is received, the step (3-3) is carried out;
(3-2) adding one to the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic wave is received or not, if not, repeating the step until the ultrasonic wave is received, wherein the Nth ultrasonic pulse is the first ultrasonic pulse which can be received;
(3-3) subtracting one from the N value, and transmitting N ultrasonic pulses according to the corrected N value; judging whether the ultrasonic waves are received or not, if so, repeating the step until no ultrasonic waves are received; the N +1 th ultrasonic pulse is the first ultrasonic pulse that can be received.
4. The ultrasonic transmission time correction method according to any one of claims 1 to 3, characterized in that an ultrasonic wave amplitude threshold value M is set, and only if the amplitude of a received ultrasonic wave pulse exceeds the ultrasonic wave amplitude threshold value M, the reception of the ultrasonic wave is recognized.
5. An ultrasonic transmission time correction system of an ultrasonic flowmeter is characterized by comprising a transmission pulse number value setting module, a transmission control module and a receiving judgment module;
a primary transmission pulse number value N is set in the transmission pulse number value setting module, and the initial value of N is a natural number; the sending control module is connected with the first ultrasonic transducer and used for controlling the first ultrasonic transducer to send N ultrasonic pulses according to the N value;
the receiving and judging module is connected with the second ultrasonic transducer and used for judging whether the second ultrasonic transducer receives ultrasonic waves or not and controlling the sending period setting module to add one or subtract one to the number value of the sending pulse according to the judging result.
6. The ultrasonic transmission time correction system according to claim 5, further comprising an amplitude threshold setting module, wherein the amplitude threshold setting module sets an ultrasonic amplitude threshold M, and when the amplitude of the ultrasonic wave received by the second ultrasonic transducer exceeds the threshold M, the ultrasonic wave is determined to be received.
7. An ultrasonic flow meter comprising the ultrasonic transmission time correction system of claim 5 or 6.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610246863.6A CN105716674B (en) | 2016-04-20 | 2016-04-20 | Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter |
| PCT/CN2017/080919 WO2017181939A1 (en) | 2016-04-20 | 2017-04-18 | Method of calibrating ultrasound transmission time for ultrasound flowmeter, system, and flowmeter |
| AU2017254028A AU2017254028B2 (en) | 2016-04-20 | 2017-04-18 | Method of calibrating ultrasound transmission time for ultrasound flowmeter, system, and flowmeter |
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| CN201610246863.6A CN105716674B (en) | 2016-04-20 | 2016-04-20 | Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter |
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| CN105716674A CN105716674A (en) | 2016-06-29 |
| CN105716674B true CN105716674B (en) | 2020-06-23 |
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| AU (1) | AU2017254028B2 (en) |
| WO (1) | WO2017181939A1 (en) |
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| CN105716674B (en) * | 2016-04-20 | 2020-06-23 | 成都千嘉科技有限公司 | Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter |
| JP7384551B2 (en) * | 2017-03-14 | 2023-11-21 | 株式会社堀場エステック | Diagnostic system, diagnostic method, diagnostic program and flow control device. |
| CN111102946B (en) * | 2019-12-18 | 2021-11-23 | 湖北省电力勘测设计院有限公司 | Tunnel deformation monitoring method based on ultrasonic waves |
| CN111323100B (en) * | 2020-03-24 | 2021-08-17 | 成都千嘉科技有限公司 | Ultrasonic gas meter fault diagnosis system and method |
| CN112964337B (en) * | 2021-03-17 | 2024-03-29 | 成都千嘉科技有限公司 | Calibration system and method applied to ultrasonic gas meter |
| CN114923531B (en) * | 2022-07-21 | 2022-10-11 | 成都千嘉科技股份有限公司 | Threshold value self-adaptive adjusting method and ultrasonic metering device self-adaptive metering method |
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| CN102636252B (en) * | 2012-04-10 | 2013-11-27 | 吉林大学 | Method and device for detecting precise arrival moment of ultrasonic wave |
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| CN105716674B (en) * | 2016-04-20 | 2020-06-23 | 成都千嘉科技有限公司 | Ultrasonic transmission time correction method and system of ultrasonic flowmeter and flowmeter |
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- 2016-04-20 CN CN201610246863.6A patent/CN105716674B/en active Active
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2017
- 2017-04-18 AU AU2017254028A patent/AU2017254028B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2017254028A1 (en) | 2018-11-15 |
| CN105716674A (en) | 2016-06-29 |
| AU2017254028B2 (en) | 2020-04-09 |
| WO2017181939A1 (en) | 2017-10-26 |
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