JJF 1578.2-2016 English PDF

US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1578.2-2016: Test Method of Calculating Mileage and Time for App-based Ride-hailing Mobile Satellite Position Terminal(for trial implementation)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1578.2-2016	259	Add to Cart	3 days	Test Method of Calculating Mileage and Time for App-based Ride-hailing Mobile Satellite Position Terminal(for trial implementation)	Valid

Similar standards

GB/T 3222.1   JJF 1234   JJF 1396   JJF 1578.3   JJF 1578   JJF 1578.1   

Basic data

Standard ID: JJF 1578.2-2016 (JJF1578.2-2016)
Description (Translated English): Test Method of Calculating Mileage and Time for App-based Ride-hailing Mobile Satellite Position Terminal(for trial implementation)
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A57
Word Count Estimation: 11,156
Date of Issue: 2016-10-21
Date of Implementation: 2016-11-01
Regulation (derived from): State Administration of Quality Supervision, Inspection and Quarantine Notice No.108 of 2016
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine

JJF 1578.2-2016: Test Method of Calculating Mileage and Time for App-based Ride-hailing Mobile Satellite Position Terminal(for trial implementation)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test Method of Calculating Mileage and Time for App-based Ride-hailing Mobile Satellite Position Terminal (for trial implementation) National Metrological Technical Code of the People's Republic of China Network reservation taxi mobile satellite positioning terminal Metering time detection method (Trial) Ride-hailingMobileSatelitePositionTerminal (fortrialimplementation) 2016-10-21 release 2016-11-01 implementation State Administration of Quality Supervision, Inspection and Quarantine issued Network reservation taxi mobile satellite positioning Terminal meter timing detection method (Trial) Terminal (fortrialimplementation) Unit. National Time Frequency Measurement Technical Committee The main drafting unit. Beijing Institute of Metrology and Testing (National Satellite Navigation and Timing Industry Measurement and Testing Center) Beijing University of Aeronautics and Astronautics Participated in the drafting unit. Beijing Institute of Radio Measurement and Testing China Metrology University Beijing industry university This specification entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this specification. Xu Yuan (Beijing Institute of Metrology and Testing Science) (National Satellite Navigation and Timing Industry Measurement and Testing Center) Huang Yan (Beijing Institute of Metrology and Measurement Science) (National Satellite Navigation and Timing Industry Measurement and Testing Center) Kang Tingting (Beijing Institute of Metrology and Testing Science) (National Satellite Navigation and Timing Industry Measurement and Testing Center) Qin Honglei (Beijing University of Aeronautics and Astronautics) Participate in the drafters. Yang Jun (Beijing Radio Measurement and Testing Institute) Jin Shangzhong (China Metrology University) Zhu Jiangmiao (Beijing University of Technology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Terminology (1) 3.1 Network Reservation Taxi Mobile Satellite Positioning Terminal (1) 4 Overview (1) 5 Metrological characteristics (2) 5.1 positioning bias and precision (2) 5.2 Accuracy of measurement (2) 5.3 Timing error (2) 6 General technical requirements (2) 6.1 Display function (2) 6.2 track record upload function (2) 7 Test conditions (2) 7.1 Environmental conditions (2) 7.2 Main measuring instruments (2) 8 Test items and test methods (3) 8.1 Test items (3) 8.2 Detection method (3)

Introduction

The purpose of this specification is to provide a method for the timing of the scheduled travel of the mobile satellite mobile terminal. This specification is prepared in accordance with the requirements of JJF 1071-2010 "Rules for the Preparation of National Metrological Calibration Standards". This specification is the first release. Network reservation taxi mobile satellite positioning terminal Metering time detection method (Trial)

1 Scope

This specification applies to the network reservation taxi business service platform (hereinafter referred to as the service platform) company used to move Detection of Terminal Scheduling for Satellite Positioning.

2 reference file

This specification refers to the following documents. JJF 1403-2013 Global Navigation Satellite System (GNSS) Receiver (Time Measurement) Calibration Specification GB/T 19056-2012 Car Drive Recorder Technical Requirements for Vehicle Terminals for Satellite Positioning Systems for Road Transport Vehicles JT/T 794-2011 For dated references, only the dated edition applies to this specification; references that are not dated , The latest version (including all modifications) applies to this specification.

3 terminology

3.1 Network Reservation Taxi Mobile Satellite Positioning Terminal mobilesatelitepositionterminalfor app-basedride-hailing In the network booking a taxi (hereinafter referred to as the network car) used on the use of mobile satellite positioning module collection and Transmission satellite navigation and positioning information and mobile base station information, through the mobile Internet and app software, obtained in the mobile terminal Vehicle latitude and longitude, mileage and time and other information, and display, storage of electronic mobile terminals.

4 Overview

Network reservation Taxi Mobile satellite positioning terminal (hereinafter referred to as the mobile terminal) mainly by the positioning module, A data memory, a wireless communication module, a data output interface, a display screen, etc., and the mobile terminal The line communication module uploads the travel track information to the service platform. The basic structure and working principle are shown in Fig. Figure 1 basic structure and working principle of the mobile terminal

5 measurement characteristics

5.1 positioning bias and precision Satellite positioning deviation and precision. ≤ 15m; ≤ 15m, 1σ. Auxiliary positioning deviation and precision. ≤ 50m; ≤ 50m, 1σ. 5.2 Measurement error -4% to 1%. 5.3 Timing error ≤ 1.5s. General technical requirements 6.1 Display function The mobile terminal shall be able to display Beijing time in hours, minutes, seconds or hh/mm/ss, and as a record, Output, display, data communication and other functions of the marked time. 6.2 track record upload function The mobile terminal should be able to record the mileage and time of the settlement and upload the data to the service platform company. Settlement mileage The minimum resolution should be ≤ 0.1km, the minimum resolution of the settlement time should be ≤ 1min. The minimum position update rate is 1Hz.

7 detection conditions

7.1 Environmental conditions 7.1.1 Ambient temperature (20 ± 10) ° C. 7.1.2 Environmental relative humidity ≤ 80%. 7.2 Main measuring instruments 7.2.1 Satellite navigation signal simulator a) Output frequency. support GNSS system used by mobile terminals to be tested, at least need to include GPSL1 and BDS B1 frequency. b) Signal power. Output range (-150 ~ -110) dBm; Maximum allowable error. ± 0.5dB. c) Pseudo-precision. < 0.01m. d) A standard scene that matches the navigation electronic map can be set. 7.2.2 Signal repeater Support GPSL1 and BDSB1 signal and communication signal forwarding, at the same time through the step variable attenuator control letter Power level, the attenuator control resolution is better than 1dB. 7.2.3 Live Record Playback System Record the number of signal quantization bits. ≥ 16, recording bandwidth. ≥ 10MHz. 7.2.4 Combination Positioning Positioning System In the GNSS lock, positioning deviation. ≤ 0.05m, the measurement error. ≤ 0.03%; GNSS loss of lock within 60s, positioning bias. ≤ 1m, the measurement error. ≤ 0.1%. 7.2.5 Microwave chamber Frequency range. 1GHz ~ 3GHz; Static zone reflection level. ≤-35dB; Field intensity uniformity. ± 0.5dB; Path loss uniformity. ± 0.5dB; Screening performance. > 80dB. 7.2.6 Standard clock Maximum allowable error at current time. ± 0.5s. 7.2.7 Digital vector source CW mode. 9kHz ~ 6GHz; I/Q mode. 1MHz ~ 6GHz; Support AGNSS signal simulation.

8 Test items and test methods

8.1 Test items The test items are shown in Table 1. Table 1 List of test items No. Test item name

1 function check

2 positioning bias and precision

3 meter error

4 timing error

8.2 Detection method 8.2.1 Functional check Check the mobile terminal with visual inspection, the results should meet the requirements of 6. 8.2.2 positioning bias and precision Using satellite navigation signal simulator and digital vector signal source for detection, instrument connection shown in Figure 2. Figure 2 positioning deviation and precision detection instrument connection diagram 8.2.2.1 Satellite positioning bias and precision In the microwave darkroom, start the simulator positioning deviation and positioning deviation precision test scene, the mobile terminal output the After a valid positioning value, wait 3min, run continuously for 15min, record the mobile terminal positioning data value (sampling room Press the mobile terminal manual, no sampling interval for 1s). Set the i-th locator simulator simulation standard bit The positioning information recorded by the measured mobile terminal is xi, yi, zi () (i = 1, 2, , n), according to formula (1) to calculate the i-th positioning point deviation. δxi = xi-x0i, δyi = yi-y0i, δzi = zi-z0i (1) Calculate the mean δx, δy, δz of the n positioning points according to the formula (2) δx = i = 1 δxi, δy = i = 1 δyi, δz = i = 1 δzi (2) Calculate the positioning deviation of the mobile terminal according to the formula (3) δp. δp = δx2 δy2 δz2 (3) According to the formula (4) to calculate the standard deviation of the experimental standard deviation sx, sy, sz. sx = n-1Σ i = 1 δxi-δx () 2æ , sy = n-1Σ i = 1 δyi-δy () 2æ sz = n-1Σ i = 1 δzi-δz () 2æ (4) Calculate the precision of the positioning error of the mobile terminal according to the formula (5) σp. σp = s2x s2y s2z (5) All of the above. δxi, δyi, δzi --- x, y, z coordinate positioning deviation of the i-th locating point of the mobile terminal; δx, δy, δz --- the mean value of the positioning deviation of n positioning points of the mobile terminal; sx, sy, sz - the standard deviation of the positioning deviation; σp --- positioning deviation precision. 8.2.2.2 Auxiliary positioning deviation and precision In the microwave darkroom, the satellite positioning lock after blocking the GNSS signal or turn off the satellite positioning function, the use of digital Vector signal source analog output auxiliary positioning signal, record the mobile terminal in the loss of GNSS signal output after 1min Bit data, the standard position of the digital vector source output is x0i, y0i, z0i (), the measured mobile terminal location information For xi, yi, zi (), according to the formula (1), (2), (3), (4), (5) to calculate the auxiliary positioning bias and precision. 8.2.3 Measurement error 8.2.3.1 simulator method In the microwave darkroom, the satellite navigation signal simulator runs based on the electronic map to establish the measurement error test scene [Visible satellite is not less than 6, the signal power of -120dBm or for the manufacturers given the interface level indicators, speed In the range of (0 ~ 120) km/h], according to formula (6) to calculate the mobile terminal of the measurement error. The instrument connection diagram is shown in Fig 2. ΔR = R-R0 (6) Where. ΔR --- stroke error, km; R --- Mileage measured by mobile terminal, km; R0 --- standard mileage, km. 8.2.3.2 Road test method In the network car to install the real record playback system and the combination of positioning attitude positioning system, driving in the actual road, driving Speed in the (0 ~ 120) km/h range, real record playback system continuous acquisition of satellite navigation signal is not less than 15min. The measured mileage of the combined pose positioning system is the standard mileage R0, the mileage measured by the mobile terminal is R, Calculate the mobile terminal's stroke error according to formula (6). In the microwave darkroom, according to the need to detect the real record playback system Collected signal playback, reproduction of the actual sports car scene. The instrument is connected as shown in Figure 3. Figure 3 Road test instrument connection diagram 8.2.4 Timing error When the standard clock is used with the mobile terminal clock and recorded. Calculate the measured mobile terminal according to formula (7) Before the moment error. Δt = t-t0 (7) Where. Δt --- current moment error, s; t - the time indication of the mobile terminal, s; t0 --- the standard clock time indication, s. The current time errors Δt1 and Δt2 of the start and end points are obtained by the above-described method, and the time is calculated according to the formula (8) The error is. Δτ = Δt2 - Δt1 (8) Where. Δτ --- platform timing error, s; Δt2 --- the current time of the end of the timing error, s; Δt1 --- the current time of the starting point of the timing error, s. 6102- 2 􀏕 8751 FJJ ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1578.2-2016_English be delivered?

Answer: Upon your order, we will start to translate JJF 1578.2-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1578.2-2016_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1578.2-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.