GA/T 1563-2019Technical requirements for shoes-on metal detectors (English PDF)

5.1 Appearance

The surface coating should be uniform and should not be blistering, cracking, peeling and abrasion. There should be no obvious dents, scratches, cracks, Deformation and pollution. Metal parts should be free of rust and other mechanical damage. Parts should be fastened without loosening, buttons, switches and other activities the operation of components should be flexible and reliable. The wiring of the circuit board should be reasonable and there should be no temporary wiring. The detection platform should have a clear figure indicating the standing position and there should be a space of 50 yards or more (length 300mm).

5.2 Mechanical structure

5.2.1 Case strength

The mechanical strength of the operation panel should meet the requirements of 8.1 of GB 4793.1-2007, and should not appear to collapse, loosen, misplace, Cracks or distortions.

5.2.2 Enclosure protection level

The indoor type shoe inspection instrument should meet the IP31 level requirements in GB/T 4208-2017. Outdoor shoe inspection instrument should comply with GB/T 4208-2017 IP65 rating.

5.2.3 Battery Placement

Use a battery-powered shoe tester. The battery should be built-in and easy to replace or recharge. The circuit part should be effectively isolated from the battery compartment to avoid being Battery leakage and corrosion.

5.3 Identification

Identification meets the following requirements.

a) The rated supply voltage of the power supply or the type and connection polarity of the battery should be marked near the power supply terminals;

b) The switching of switches, the function of buttons, and the installation of various options should be clearly marked;

c) Symbols represented by graphics shall meet the requirements of Table 1 in GB 4793.1-2007;

d) If it needs to be expressed in words, it should be marked in Chinese;

e) Perform the test in accordance with the test method of 6.4.2. The marking shall be clear and legible, without discoloration and discoloration. The attached label shall not be loosened or rolled.

side.

5.4 Power supply

5.4.1 The shoe tester powered by AC power supply should be able to operate within the power supply range of AC187V ~ 242V, 47.5Hz ~ 52.5Hz without adjustment.

normal work.

5.4.2 The battery-powered shoe tester meets the following requirements.

a) The supply voltage should not exceed DC36V;

b) It should be able to work normally for 4 hours without replacing the battery or recharging;

c) When the battery voltage drops to 80% of the nominal voltage, it should have an undervoltage reminder function, and the performance of the shoe tester should not be reduced.

5.5 Electrical safety

5.5.1 Ground

When using AC power supply, there should be a reliable protective ground terminal. Resistance between the protective earth terminal and all accessible metal parts of the enclosure the reactance should not be greater than 0.1ohm. The protective ground connected through the additional lead, the total ground of all the connectors in the additional lead and its conductive path the impedance should not be greater than 0.4ohm.

5.5.2 Insulation resistance

When using AC power supply, the insulation resistance between all accessible metal parts and the power supply terminals should not be small under normal conditions at 100Mohm, it should not be less than 2Mohm under constant humid and hot conditions.

5.5.3 Leakage current

When using AC power supply, leakage current between accessible parts and ground and between two accessible parts. sine wave should not exceed 0.5mA effective value, non-sine wave should not exceed 0.7mA peak value or 2mA DC value.

5.5.4 Dielectric strength

When using AC power supply, the protective ground and power supply terminals should be able to withstand the AC voltage in Table 9 of GB 4793.1-2007.

The effective value is the specified value of 1500V, and there should be no breakdown or repeated flashover.

5.5.5 Radiation magnetic induction

The magnetic induction intensity at any point on the surface of the radiated magnetic field emitted by the shoe inspection instrument should not exceed 30 µT. Refer to Appendix A for the development of indicators.

5.6 Detection performance

5.6.1 Detection capability

According to the product manual and Chapter 4, determine the type of shoe inspection instrument, and determine the detection position with reference to Appendix B.

Under the detection requirements of Table 1, there should be no missing or false alarms.

Table 1 Detection requirements for different types of shoe inspection instruments

Shoe inspector category Alarm test should not be performed Detection position metal alarm test object Detection position non-metal non-alarm test object all I type all any three ABS plastic Class II all of any three ABS plastics Class III all of any three ABS plastics Note. Please refer to Appendix B for the detection position; see Appendix C for metal alarm test objects and non-metal non-alarm test objects.

5.6.2 Distinction of test material

The shoe tester should be able to distinguish the metal category of the metal alarm test object, that is, distinguish between non-ferrous metals and ferrous metals.

5.6.3 Scan time

The single scan time of the two-foot shoe inspection instrument should be less than 3s; the single scan time of the two-foot shoe inspection instrument should not exceed 5s.

5.6.4 Continuous working stability

The continuous working time of the shoe inspection instrument should be greater than or equal to 24h. Shoe testers powered by AC power should be able to Stable work; use battery-powered shoe tester, allowing continuous charging or battery replacement during continuous work to ensure uninterrupted work.

5.6.5 Counting

The shoe inspection instrument should have a counting function that can record the number of valid detections and the number of people who have reported an alarm.

5.6.6 Detection status recovery

When the test object leaves the detection area, the shoe inspection instrument should have the function of recovering the detection state, and the automatic recovery time should be less than 2s.

5.7 Alarm

5.7.1 Alarm sound

The alarm sound of the shoe inspection instrument should meet the following requirements.

a) Different from non-alarm sound;

b) The tone can be adjusted so that the alarms of two adjacent shoe detectors can be clearly distinguished;

c) It can be adjusted in steps from mute to maximum sound intensity. The maximum sound intensity should not be lower than 85dB (A).

5.7.2 Alarm display

The alarm display of the shoe inspection instrument meets the following requirements.

a) Different from non-alarm display, and the color should be red;

b) The two-foot shoe inspection instrument should have left and right foot display functions;

c) In a bright environment of 6000lx and a dim environment of 25lx, the alarm display should be clearly visible when it is 1m away from the alarm display.

information.

5.7.3 Alarm status recovery

When the metal alarm test object leaves the detection area of the shoe inspection instrument for 2 seconds, the shoe inspection instrument should stop alarming immediately.

5.8 Environmental adaptability

5.8.1 Climate and environmental adaptability

The shoe inspection instrument should be able to withstand the various tests under the climatic environmental conditions specified in Table 2. During and after high temperature, low temperature and constant humid heat test the samples shall meet the requirements of 5.6.1. The samples recovered for 2 hours after low temperature storage and high temperature storage tests shall meet the requirements of 5.6.1.

Table 2 Climate and environmental test parameters

Test item type severity Low temperature Indoor type 0 °C, duration. 2h jobs Outdoor type -20 °C, duration. 2h high temperature Indoor type 40 °C, duration. 2h jobs Outdoor type 55 °C, duration. 2h Constant damp heat Indoor 40 °C ± 2 °C Relative humidity. 93% ± 3% Duration. 48h Non-working Outdoor 55 °C ± 2 °C Relative humidity. 93% ± 3% Duration. 48h Low temperature storage/-20 °C, duration. 2h non-working High temperature storage/55 °C, duration. 2h non-working

5.8.2 Mechanical environment adaptability

The shoe inspection instrument should be able to withstand the various tests under the mechanical environmental conditions specified in Table 3. After the test, the sample should be free of device looseness and damage.

And meet the requirements of 5.6.1.

Table 3 Mechanical environmental test parameters

Test project severity vibration Frequency range. 10Hz ~ 55Hz Sweep rate. 1oct/min Amplitude. 0.35 mm Axial. X, Y, Z Duration. not less than 30 min per axis Non-working Shock Acceleration. 150m/s2 Rear peak serrated half-sine trapezoid Duration. 11ms, Number of impact axes. X, Y, Z Number of pulses per axis. 3 Non-working

5.9 Electromagnetic compatibility

5.9.1 ESD immunity

Should meet the requirements of GB/T 17626.2-2018 severe level 4 regulations. Allow temporary loss or reduction of function during the test.

After stopping, it should be able to recover by itself without operator intervention. After the test, the shoe inspection instrument should be able to work normally.

5.9.2 Radio Frequency Electromagnetic Field Radiation Immunity

Should meet the requirements of severe level 2 in GB/T 17626.3-2016 After stopping, it should be able to recover by itself without operator intervention. After the test, the shoe inspection instrument should be able to work normally.

5.9.3 Surge (Shock) Immunity

The shoe picker powered by AC power supply should meet the requirements of severe level 2 in GB/T 17626.5-2008.

Can be temporarily lost or reduced, after the test is stopped, it should be able to recover without operator intervention. After the test, the shoe inspection instrument should be able to work normally.

5.10 Anti-interference

When multiple shoe detectors are used at a distance of 600mm, they should all work normally.

5.11 Resistance to surrounding metal objects

5.11.1 Resistance to surrounding static metal objects

The metal test board outside 500mm around the shoe inspection instrument should not cause the false alarm of the shoe inspection instrument.

5.11.2 Resistance to the effects of surrounding moving metal objects

Moving metal objects beyond 500mm of the detection zone boundary should not cause the false alarm of the shoe detector.

5.11.3 Resistance to the influence of metal objects on the ground

Underground metal objects 100mm away from the shoe inspection instrument should not affect the detection performance of the shoe inspection instrument.

6.1 General test conditions

6.1.1 Environmental conditions

Except for tests that specifically state environmental conditions, the remaining tests shall be performed under the following environmental conditions.

a) Temperature. 15 °C ~ 35 °C;

b) Relative humidity. 15% to 75%;

c) Atmospheric pressure. 86kPa ~ 106kPa;

d) Metal, conductive objects or magnetically permeable objects are 500mm away from any part of the shoe detector;

e) Electromagnetic environment. No strong electromagnetic field interference.

6.1.2 Default settings

Except for tests that specifically specify operating parameters, the remaining tests shall be performed under the following parameters.

a) Sensitivity. Adjust the sensitivity so that the shoe inspection instrument is at the sensitivity recommended in the product manual;

b) Alarm status recovery. If there is an alarm recovery mode selection, it should be set to the automatic recovery mode;

c) Other parameters. Set according to relevant product instructions.

6.2 Visual inspection

Visually inspect the appearance of the shoe inspection instrument to determine whether it meets the requirements of 5.1.

6.3 Mechanical structure test

6.3.1 Case strength test

Carry out the shell rigidity test according to 8.1 of GB 4793.1-2007, and determine whether the results meet the requirements of 5.2.1, but the display and instructions no such test is performed on the lamp surface.

6.3.2 Shell protection level test

Test according to the test method specified in GB/T 4208-2017, and determine whether the result meets the requirements of 5.2.2.

6.3.3 Battery placement inspection

Visually inspect and perform the battery replacement and charging operations to determine whether the results meet the requirements of 5.2.3.

6.4 Identification inspection

6.4.1 Check visually whether the results of various markings meet the requirements of 5.3.

6.4.2 Marks or handwriting Wipe with cotton ball moistened with water for 15s, and then wipe with gasoline-soaked cloth for 15s to determine whether it meets the requirements of 5.3.

6.5 Power supply inspection

6.5.1 The shoe tester powered by AC power is tested by the following methods.

a) Set the adjustable power output frequency at 47.5Hz and the voltage at the lower and upper limits of the supply voltage required in 5.4.1, respectively.

For at least 15 minutes, perform a performance test according to the test method of 6.7.1 to determine whether the results meet the requirements of 5.4.1;

b) Set the output frequency of the adjustable power supply at 52.5Hz and the voltages at the lower and upper limits of the supply voltage required in 5.4.1, respectively.

For at least 15 minutes, perform a performance test according to the test method of 6.7.1 to determine whether the results meet the requirements of 5.4.1.

6.5.2 The test method for a battery-powered shoe tester is as follows.

a) Insert a fully charged battery according to the battery model and charging method specified by the product, and then turn it on;

b) The shoe tester is set to the maximum alarm sound level, and the alarm display is turned on. The automatic sleep or automatic shutdown function is turned off during the test;

c) Detection with metal alarm test objects at certain intervals during the test, the alarm time accounts for at least one fifth of the total working time One;

d) After 4 hours of continuous working time, carry out the detection performance test according to the method of 6.7.1, and determine whether the result meets 5.4.2 b) Requirements

e) Use a DC regulated power supply to power the shoe tester, and adjust the power supply voltage to 80% of the battery's nominal voltage, according to the method of 6.7.1 Method to perform detection performance tests to determine whether the results meet the requirements of c) in 5.4.2.

6.6 Electrical safety test

6.6.1 Ground

Measure the impedance between the protective ground terminal and all accessible metal parts of the enclosure, and determine whether the result meets the requirements of 5.5.1. By attaching Add the protective ground connected by the lead, measure the total ground impedance of the additional lead and all connectors in the conductive path, and determine whether the result meets 5.5.1 requirements.

6.6.2 Insulation resistance

When the power plug is not plugged into the power supply and the power switch is turned on, the After the 500V DC voltage has been applied for 5s, the insulation resistance is measured immediately. If the case has no conductive parts, the case of the device is covered with a metal conductor, Measure the insulation resistance between the metal conductor and the lead-in terminal of the power supply. Measured under the constant humid and hot conditions specified in 6.1.1 and Table 2, respectively, and the judgment results are Whether it meets the requirements of 5.5.2.

6.6.3 Leakage current

Measure according to the provisions of A.1 in Appendix A of GB 4793.1-2007, and determine whether the result meets the requirements of 5.5.3.

6.6.4 Dielectric strength

Carry out according to the provisions of 6.8 in GB 4793.1-2007, and determine whether the result meets the requirements of 5.5.4.

6.6.5 Radiation magnetic induction intensity test

6.6.5.1 Radiation magnetic induction test equipment

The test equipment is as follows.

a) Oscilloscope. 50mV sensitivity, bandwidth greater than 500kHz, input resistance greater than 1Mohm or input capacitance less than 30pF;

b) Measuring coil. On a 50 mm (2 in) diameter insulating skeleton, 250 coils of 0.19 mm high-strength enameled wire are wound in a single layer;

c) 3m double-core shielded wire.

6.6.5.2 Test method

One end of the shielded wire is connected to the measuring coil, and the other end is connected to the input end of the oscilloscope.

Pick up. A 4700ohm resistor is connected in series between the non-grounded wire in the shielded wire and the measurement coil. The connection diagram is shown in Figure 1. All directions on the left and right boundaries of the detection area in the area formed by the inner 150mm, use a coil probe to measure all over the surface of the shoe inspection device; if the probe is non-isotropic, you should rotate the probe Orientation for maximum readings. Read the peak-to-peak voltage and period displayed by the oscilloscope, and calculate the magnetic induction intensity according to formula (1).

For derivation, see Appendix A.

Bp-p = 0.31 × Vp-p × T (1) in the formula.

Bp-p--magnetic induction intensity, unit is micro Tesla (µT);

Vp-p--peak-to-peak voltage in millivolts (mV);

T--period in milliseconds (ms).

Coil twisted pair

Oscilloscope

4700ohm

Vp-p

Figure 1 Schematic diagram of magnetic induction measurement

6.7 Detection performance test

6.7.1 Detection capability test

Install the shoe inspection instrument on a flat surface according to the product instructions, and perform the test according to the following steps.

a) According to the product manual and Chapter 4, determine the type of shoe inspection instrument, and determine the detection location with reference to Appendix B;

b) Adjust the appropriate sensitivity according to the product manual. The sensitivity cannot be arbitrarily adjusted during the test;

c) Place non-metallic non-alarm test objects horizontally and vertically in the detection positions determined in step a) (see Appendix C) Test (the upper and bottom positions are tested in two horizontal ways, which are vertical to each other), and record the alarm.

The test shall not be less than 3 times (ie any three positions);

d) Select a metal alarm test object (see Appendix C) and test at the detection position shown in Appendix B. tester the test object shall be operated through a non-metal clip (special test equipment may also be used), and the test shall be performed in accordance with the requirements of Table 1 in 5.6.1 test. At each detection position, metal alarm test objects are placed horizontally and vertically for testing (testing the upper and the position of the bo...