A synchronous flow meter testing method and device

Abstract

The present invention discloses a synchronous flow test method and device, comprising a meter to be tested, a signal collector for the meter to be tested, a control unit, a standard device, a signal collector for the standard device, and a signal output device, wherein the meter to be tested is connected to one end of the signal collector for the meter to be tested, the other end of the signal collector for the meter to be tested is connected to the control unit, the control unit is connected to the signal collector for the standard device, the signal collector for the standard device is connected to the standard device, and the signal collector for the standard device is connected to the signal output device. The present invention solves the problem that the reading of the standard device is delayed compared with the reading of the flow meter during operation through the synchronous test method and device, eliminates the error caused by the reading delay during the measurement process, and improves the detection accuracy of the flow meter.

Description

Technical Field

[0001] The invention relates to the field of instrument verification, and in particular to a flow meter testing method and device using a synchronization method. Background Art

[0002] Flowmeter is a kind of measuring instrument. Measurement is an important technical foundation of the entire national economy and is widely used in the production and life of enterprises and residents. Flowmeter is mainly used for the measurement of energy commercial trade data, or the measurement of data in the process of production control and monitoring, or the energy measurement of water, electricity and gas required for the production and life of enterprises and residents. Therefore, the accuracy of flowmeter is particularly important. The calibration test of flowmeter is an important means to ensure the accuracy of measurement value. According to the national measurement and calibration rules, flowmeter must be calibrated and tested according to the prescribed period.

[0003] The calibration test of flowmeter is completed by standard instrument. The counting and display of existing electronic flowmeter are jumpy. There are two methods for calibration. One is intermittent start-stop method, but this method will cause inaccurate measurement results due to the influence of flowmeter switch; the other is uninterrupted measurement, but during the operation, the reading of standard instrument is delayed compared with the reading of flowmeter. The uncertainty of this delay brings measurement error. How to eliminate this measurement error during the test and improve the test accuracy is an urgent problem to be solved. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a synchronous flow test method and device in view of the deficiencies in the prior art.

[0005] The technical solution of the above-mentioned problem of the present invention is as follows:

[0006] A synchronous flow test device comprises a measured meter, a measured meter signal collector, a control unit, a standard device, a standard device signal collector, and a signal output device, wherein the measured meter is connected to one end of the measured meter signal collector, the other end of the measured meter signal collector is connected to the control unit, the control unit is connected to the standard device signal collector, the standard device signal collector is connected to the standard device, and the standard device signal collector is connected to the signal output device;

[0007] The measured meter is a measured flow meter;

[0008] The signal collector of the meter under test is used to collect the digital jump signal of the meter under test;

[0009] The standard device is used to perform standard test on the meter under test and send out a test signal;

[0010] The standard device signal collector collects the test signal emitted by the standard device;

[0011] The control unit is used to receive the jump signal of the signal collector of the meter under test, and to mark the synchronization between the signal collected by the standard device signal collector and the jump signal of the meter under test;

[0012] The signal output device is used to output the signal collected by the standard device signal collector during the test and synchronously marked by the control unit.

[0013] Furthermore, the standard device is a standard flow meter or a standard electronic balance.

[0014] Furthermore, the standard device signal collector is a pulse signal collector of a standard flow meter or a mass signal collector of a standard electronic balance.

[0015] Furthermore, the signal output device is a pulse signal output device of a standard flow meter or a mass signal output device of a standard electronic balance.

[0016] A synchronous flow rate testing method is implemented using a synchronous flow rate testing device, comprising the following steps:

[0017] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the signal collector of the standard instrument into the control unit;

[0018] S2, start the signal collector of the meter under test and the signal collector of the standard instrument;

[0019] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0020] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1;

[0021] S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the signal collector of the standard device after a certain jump number n, 0≤n≤(T-1);

[0022] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0023] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the standard instrument signal collector as E(T+1), and the measurement ends;

[0024] SS+2, outputs the marked standard device signal data of test cycle T through the signal output device.

[0025] Furthermore, the standard device is a standard flow meter or a standard electronic balance.

[0026] Furthermore, the standard device signal collector is a pulse signal collector of a standard flow meter or a mass signal collector of a standard electronic balance.

[0027] Furthermore, the signal output device is a pulse signal output device of a standard flow meter or a mass signal output device of a standard electronic balance.

[0028] Furthermore, when the meter under test is tested with a standard flow meter, it specifically includes:

[0029] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the pulse signal collector into the control unit;

[0030] S2, start the signal collector of the meter under test and the pulse signal collector of the standard flow meter;

[0031] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0032] S4, after the control unit receives the jump signal M1 of the meter under test from the signal collector of the meter under test, it synchronously marks the signal collected by the pulse signal collector as N1;

[0033] S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the pulse signal collector after a certain jump number n, 0≤n≤(T-1);

[0034] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0035] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the pulse signal collector as N(T+1), and the measurement ends;

[0036] SS+2, outputs the marked pulse signal data of the test period T through the signal output device.

[0037] Further, when tested with a standard electronic balance, specifically including:

[0038] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the signal collector of the standard instrument into the control unit;

[0039] S2, start the signal collector of the meter under test and the mass signal collector of the standard electronic balance;

[0040] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0041] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W1;

[0042] S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the quality signal collector after a certain jump number n, 0≤n≤(T-1);

[0043] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0044] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it marks the signal collected by the quality signal collector as synchronization W(T+1), and the measurement ends;

[0045] SS+2, outputs the marked quality signal data of the test period T through the signal output device.

[0046] Beneficial effects of the present invention:

[0047] Through the synchronous test method and device, the signal marked by the standard instrument signal collector is synchronized with the jump of the measured meter each time, and the standard instrument signal data of T cycles is tested. Through data comparison, it can be checked whether the time interval of each jump of the flow meter is consistent. By comparing the total flow data of the flow meter in T cycles with the total flow data of the standard instrument, the data accuracy of the flow meter within the test cycle can be checked. The problem of the delay of the reading of the standard instrument compared with the reading of the flow meter during operation is solved, the error caused by the reading delay during the measurement process is eliminated, and the measurement accuracy of the flow meter is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the synchronous flow testing device of the present invention.

[0049] Figure 2This is a flow chart of a standard flow meter test when the jump interval n=0 in the synchronous flow test method of the present invention.

[0050] Figure 3 This is the electronic balance test flow chart of the synchronous flow test method of the present invention when the jump interval n=0.

[0051] Figure 4 This is a schematic diagram of signal marking when the jump interval n=0 in the synchronous method flow test of the present invention. DETAILED DESCRIPTION

[0052] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0053] like Figure 1 As shown, a synchronous flow test device includes a measured meter, a measured meter signal collector, a control unit, a standard device, a standard device signal collector, and a signal output device. The measured meter is connected to one end of the measured meter signal collector, the other end of the measured meter signal collector is connected to the control unit, the control unit is connected to the standard device signal collector, the standard device signal collector is connected to the standard device, and the standard device signal collector is connected to the signal output device;

[0054] The measured meter is a flow meter, which can be an electronic flow meter that needs to be calibrated, such as a water meter, a heat meter, a gas meter, etc. The measured meter signal collector is used to collect the digital jump signal of the measured meter. Every time the digital of the measured meter jumps, the measured meter signal collector collects a jump, and the control unit marks the jump signal.

[0055] The standard device is used to perform standard test on the meter under test and send out a test signal.

[0056] The standard device signal collector collects the test signal emitted by the standard device.

[0057] The control unit is used to receive the jump signal of the signal collector of the meter under test, and to mark the synchronization between the signal collected by the standard device signal collector and the jump signal of the meter under test.

[0058] The signal output device is used to output the signal collected by the standard device signal collector during the test and synchronously marked by the control unit.

[0059] The standard is a standard flow meter or a standard electronic balance, the standard signal collector is a pulse signal collector of a standard flow meter or a mass signal collector of a standard electronic balance, and the signal outputter is a pulse signal outputter of a standard flow meter or a mass signal outputter of a standard electronic balance.

[0060] A synchronous flow rate testing method is implemented using a synchronous flow rate testing device, comprising the following steps:

[0061] The meter under test is connected in series with the standard flow meter in the measuring pipeline. When the instantaneous flow rate in the measuring pipeline reaches the test requirement and the flow rate is detected to be stable, the measurement begins.

[0062] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the signal collector of the standard instrument into the control unit;

[0063] S2, start the signal collector of the meter under test and the signal collector of the standard instrument;

[0064] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0065] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1;

[0066] S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the signal collector of the standard device after a certain jump number n, 0≤n≤(T-1);

[0067] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0068] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the standard instrument signal collector as E(T+1), and the measurement ends;

[0069] SS+2, outputs the marked standard device signal data of test cycle T through the signal output device.

[0070] When n=0, that is, each time the reading of the meter under test changes, the control unit synchronously marks the signal collected by the standard instrument signal collector once, and the steps are as follows:

[0071] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number 0 of the marked signal of the signal collector of the standard instrument into the control unit;

[0072] S2, start the signal collector of the meter under test and the signal collector of the standard instrument;

[0073] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0074] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1;

[0075] S5, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M2 and sends it to the control unit;

[0076] S6, after the control unit receives the jump signal M2 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E2, and then ends a jump cycle, and the jump signal M2 and the mark signal E2 serve as the beginning of the next jump cycle of the measured meter;

[0077] S7, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M3 and sends it to the control unit;

[0078] S8, after the control unit receives the jump signal M3 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E3, ends the second jump cycle, and at the same time, the jump signal M3 and the mark signal E3 serve as the beginning of the next jump cycle of the measured meter;

[0079] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0080] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the standard instrument signal collector as E(T+1), and the measurement ends;

[0081] SS+2, outputs the marked standard device signal data of test cycle T through the signal output device.

[0082] When n = (T-1), the reading of the meter under test changes continuously, but the control unit only marks the signal synchronization of the standard instrument signal collector at the first and last changes. The measurement steps are as follows:

[0083] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number (T-1) of the marked signal of the signal collector of the standard instrument into the control unit;

[0084] S2, start the signal collector of the meter under test and the signal collector of the standard instrument;

[0085] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0086] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1;

[0087] S5, when the reading of the meter under test completes T cycles of jumps under uninterrupted measurement, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0088] S6, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E(T+1), and the measurement ends;

[0089] S7, output the marked standard device signal data of the test cycle T through the signal output device.

[0090] When 0<n<(T-1), the reading of the meter under test jumps continuously, but the control unit marks the signal synchronization of the standard instrument signal collector after every n jumps. The measurement steps are as follows:

[0091] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the signal collector of the standard instrument into the control unit;

[0092] S2, start the signal collector of the meter under test and the signal collector of the standard instrument;

[0093] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0094] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1;

[0095] S5, when the reading of the meter under test jumps to interval n, the signal collector of the meter under test receives the jump signal M(n+1) and sends it to the control unit;

[0096] S6, after the control unit receives the jump signal M(n+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E(n+1);

[0097] S7, when the reading of the meter under test jumps again at interval n, repeat steps S5 and S6, and repeat steps S5 and S6 every time the reading of the meter under test jumps at interval n;

[0098] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0099] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the standard instrument signal collector as E(T+1), and the measurement ends;

[0100] SS+2, outputs the marked standard device signal data of test cycle T through the signal output device.

[0101] The present invention sets a data collection cycle T of the signal collector of the measured meter and an interval jump number n of the marked signal of the standard instrument signal collector. Under uninterrupted testing, the measured meter jumps continuously, and each time the set interval jump number n passes, the control unit synchronously marks the signal collected by the standard instrument signal collector. It can be that the signal synchronization of the standard instrument signal collector is marked once every time the measured meter jumps; it can also be that the signal synchronization of the standard instrument signal collector is marked for the first and last time the measured meter jumps; it can also be that the standard instrument signal collector is synchronously marked once at the jump interval n of the measured meter; as the measured meter continues to jump until the end of the test cycle T, the control unit completes the marking of the signal collected by the standard instrument signal collector, and the test ends. Each time the signal marked by the standard instrument signal collector is synchronized with the jump of the measured meter, forming the standard instrument marking signal data within T cycles, and through data comparison, it can be checked whether the time interval of each jump of the flow meter is consistent, and by comparing the total flow data of the flow meter in T cycles with the total flow data of the standard instrument, the data accuracy of the flow meter in the test cycle can be checked.

[0102] When the standard instrument is a standard flowmeter, the signal collector of the standard instrument is a pulse signal collector, and the marking signal E of the signal collector of the standard instrument is specifically marked as the marking signal N of the pulse signal collector.

[0103] When the standard device is a standard electronic balance, the standard device signal collector is a quality signal collector, and the standard device signal collector marking signal E is specifically marked as the marking signal W of the quality signal collector.

[0104] When testing with a standard flow meter or a standard electronic balance, taking the interval jump n=0 and n=(T-1) as examples, the specific implementation is:

[0105] like Figure 2 As shown: a synchronous flow test method, which is implemented by using a standard flow meter through a synchronous flow test device, when the interval jumps n=0, includes the following steps:

[0106] The meter under test is connected in series with the standard flow meter in the measuring pipeline. When the instantaneous flow rate in the measuring pipeline reaches the test requirement and the flow rate is detected to be stable, the measurement begins.

[0107] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number 0 of the marked signal of the pulse signal collector into the control unit;

[0108] S2, start the signal collector of the meter under test and the pulse signal collector of the standard flow meter;

[0109] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0110] S4, after the control unit receives the jump signal M1 of the meter under test from the signal collector of the meter under test, it synchronously marks the signal collected by the pulse signal collector as N1;

[0111] S5, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M2 and sends it to the control unit;

[0112] S6, after the control unit receives the jump signal M2 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the pulse signal collector as N2, and then ends a jump cycle, and the jump signal M2 and the mark signal N2 serve as the beginning of the next jump cycle of the measured meter;

[0113] S7, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M3 and sends it to the control unit;

[0114] S8, after the control unit receives the jump signal M3 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the pulse signal collector as N3, ends the second jump cycle, and at the same time, the jump signal M3 and the mark signal N3 serve as the beginning of the next jump cycle of the measured meter;

[0115] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0116] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the pulse signal collector as N(T+1), and the measurement ends;

[0117] SS+2, outputs the marked pulse signal data of the test period T through the signal output device.

[0118] By counting the pulse signals of N2-N1=N3-N2=N4-N3…=N(T+1)-NT, the data consistency of the counting interval of the measured meter can be checked.

[0119] The data accuracy of the flowmeter in the test cycle can be verified by M(T+1)-M1=T*pulse equivalent*pulse count of a jump cycle, where the pulse equivalent is the flow rate of the flowmeter generated by one pulse.

[0120] A synchronous flow test method is implemented by using a standard flow meter through a synchronous flow test device. When the jump interval n=(T-1), the method includes the following steps:

[0121] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number (T-1) of the marked signal of the pulse signal collector into the control unit;

[0122] S2, start the signal collector and pulse signal collector of the meter under test;

[0123] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0124] S4, after the control unit receives the jump signal M1 of the meter under test from the signal collector of the meter under test, it synchronously marks the signal collected by the pulse signal collector as N1;

[0125] S5, when the reading of the meter under test completes T cycles of jumps under uninterrupted measurement, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0126] S6, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the pulse signal collector as N(T+1), and the measurement ends;

[0127] S7, outputting the marked pulse signal data of the test period T through the signal output device.

[0128] The data accuracy of the flowmeter in the test cycle can be verified by M(T+1)-M1=T*pulse equivalent*pulse count of a jump cycle, where the pulse equivalent is the flow rate of the flowmeter generated by one pulse.

[0129] like Figure 3 As shown: a synchronous flow test method, which is implemented by a synchronous flow test device using a standard electronic balance, when the interval jumps n=0, includes the following steps:

[0130] The meter under test is connected in series with the standard flow meter in the measuring pipeline. When the instantaneous flow rate in the measuring pipeline reaches the test requirement and the flow rate is detected to be stable, the measurement begins.

[0131] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number 0 of the marked signal of the quality signal collector into the control unit;

[0132] S2, start the signal collector of the meter under test and the mass signal collector of the standard electronic balance;

[0133] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0134] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W1;

[0135] S5, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M2 and sends it to the control unit;

[0136] S6, after the control unit receives the jump signal M2 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W2, and then ends a jump cycle, and the jump signal M2 and the mark signal W2 serve as the beginning of the next jump cycle of the measured meter;

[0137] S7, when the reading of the meter under test jumps again, the signal collector of the meter under test receives the jump signal M3 and sends it to the control unit;

[0138] S8, after the control unit receives the jump signal M3 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W3, ends the second jump cycle, and at the same time, the jump signal M3 and the mark signal W3 serve as the beginning of the next jump cycle of the measured meter;

[0139] SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0140] SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W(T+1), and the measurement ends;

[0141] SS+2, outputs the marked quality signal data of the test period T through the signal output device.

[0142] By counting the pulse signals of W2-W1=W3-W2=W4-W3…=W(T+1)-WT, the data consistency of the counting interval of the measured meter can be checked.

[0143] Through M(T+1)-M1=W(T+1)-W1, the data accuracy of the flow meter during the test period can be verified.

[0144] A synchronous flow test method is implemented by a synchronous flow test device using a standard electronic balance. When the interval jumps n=(T-1), the method includes the following steps:

[0145] S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number (T-1) of the marked signal of the quality signal collector into the control unit;

[0146] S2, start the signal collector and quality signal collector of the meter under test;

[0147] S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit;

[0148] S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W1;

[0149] S5, when the reading of the meter under test completes T cycles of jumps under uninterrupted measurement, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit;

[0150] S6, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W(T+1), and the measurement ends;

[0151] S7, outputting the marked quality signal data of the test period T through the signal output device.

[0152] Through M(T+1)-M1=W(T+1)-W1, the data accuracy of the flow meter during the test period can be verified.

[0153] like Figure 4 As shown: it is a schematic diagram of signal marking when the jump interval n=0 of a synchronous flow test method of the present invention, which displays the record and data of the signal within the test cycle, including the pulse signal and mass signal output by the signal outputter when tested with a standard flow meter and a standard electronic balance respectively.

[0154] The above description is only a preferred embodiment of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous flow test method, implemented using a synchronous flow test device, comprises the following steps: S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the signal collector of the standard instrument into the control unit; S2, start the signal collector of the meter under test and the signal collector of the standard instrument; S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit; S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the standard device signal collector as E1; S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the signal collector of the standard device after a certain jump number n, 0≤n≤(T-1); SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit; SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the standard instrument signal collector as E(T+1), and the measurement ends; SS+2, output the marked standard device signal data of the test period T through the signal output device; By counting the pulse signal of E2-E1=E3-E2=E4-E3…=E(T+1)-ET, the data consistency of the counting interval of the measured meter can be checked; by counting the pulse of M(T+1)-M1=T*pulse equivalent*one jump cycle, the data accuracy of the flow meter within the test cycle can be checked, where the pulse equivalent is the flow rate of the flow meter generated by one pulse; The synchronous flow test device comprises a measured meter, a measured meter signal collector, a control unit, a standard device, a standard device signal collector, and a signal output device, wherein the measured meter is connected to one end of the measured meter signal collector, the other end of the measured meter signal collector is connected to the control unit, the control unit is connected to the standard device signal collector, the standard device signal collector is connected to the standard device, and the standard device signal collector is connected to the signal output device; The measured meter is a measured flow meter; The measured meter signal collector is used to collect the digital jump signal of the measured meter; The standard device is used to perform standard test on the meter under test and send out a test signal; The standard device signal collector collects the test signal emitted by the standard device; The control unit is used to receive the jump signal of the signal collector of the meter under test, and to mark the synchronization between the signal collected by the standard device signal collector and the jump signal of the meter under test; The signal output device is used to output the signal collected by the standard device signal collector during the test and synchronously marked by the control unit.

2. A synchronous flow test method according to claim 1, characterized in that The standard device is a standard flow meter or a standard electronic balance.

3. A synchronous flow test method according to claim 2, characterized in that The standard device signal collector is a pulse signal collector of a standard flow meter or a mass signal collector of a standard electronic balance.

4. A synchronous flow test method according to claim 3, characterized in that The signal output device is a pulse signal output device of a standard flow meter or a mass signal output device of a standard electronic balance.

5. A synchronous flow test method according to claim 4, characterized in that: When tested with a standard flow meter, specifically: S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the pulse signal collector into the control unit; S2, start the signal collector of the meter under test and the pulse signal collector of the standard flow meter; S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit; S4, after the control unit receives the jump signal M1 of the meter under test from the signal collector of the meter under test, it synchronously marks the signal collected by the pulse signal collector as N1; S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the pulse signal collector after a certain jump number n, 0≤n≤(T-1); SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit; SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the signal collector of the measured meter, it synchronously marks the signal collected by the pulse signal collector as N(T+1), and the measurement ends; SS+2, outputs the marked pulse signal data of the test period T through the signal output device.

6. A synchronous flow rate testing method according to claim 4, characterized in that: When tested with a standard electronic balance, specifically including: S1, initialize the control unit, and input the data collection period T of the signal collector of the meter under test and the interval jump number n of the marked signal of the quality signal collector into the control unit; S2, start the signal collector of the meter under test and the mass signal collector of the standard electronic balance; S3, the reading of the meter under test jumps, the signal collector of the meter under test receives the jump signal M1 and sends it to the control unit; S4, after the control unit receives the jump signal M1 of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W1; S5, under uninterrupted measurement, the reading of the meter under test jumps continuously, and the signal collector of the meter under test receives each jump signal and sends it to the control unit; after receiving the jump signal of the meter under test, the control unit synchronizes and marks the signal collected by the quality signal collector after a certain jump number n, 0≤n≤(T-1); SS, under uninterrupted measurement, when the reading of the meter under test completes T cycles of jumps, the signal collector of the meter under test receives the jump signal M(T+1) and sends it to the control unit; SS+1, after the control unit receives the jump signal M(T+1) of the measured meter from the measured meter signal collector, it synchronously marks the signal collected by the quality signal collector as W(T+1), and the measurement ends; SS+2, outputs the marked quality signal data of the test period T through the signal output device.

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