Dimensions Unit:mm
Features
- Low power consumption
- High reliability
- Excellent waterproof performance and weatherability
Applications
- Reversing detection
- Assisted parking system
- Blind spot information system
| Item | Specification |
| Resonant frequency | 55±1.0KHz |
| Sensitivity | ≥1.8Vp-p |
| Decay time | ≤2.20ms |
| Directivity(deg) X-axis | 90±15° |
| Directivity(deg) Y-axis | 45±10° |
| Capacitance | 1500±15%pF |
| Max.Input Volt | 140Vp-p |
| Mean time to failure | 50000hs |
| Operating temperature | -40℃ ～+85℃ |
A. Performance Parameters
1. Technical Parameter Standards
| No. | Test Item | Test Conditions | Acceptance Criteria | Test Equipment |
| 1 | Center Frequency (KHZ) | Room temperature 25±3 (℃) | 55.5±1 | Frequency Scanner |
| 2 | Capacitance (pf) | 1KHZ; Room temperature 25±3 (℃) | 1500±20% | LCR Digital Bridge |
| 3 | Angle (°) | Room temperature 25±3 (℃); Tested with customer-provided mainboard; Probe height from ground: 80cm; Distance to detected object: 60cm; Detected object: Ф75mm PVC pipe (length 1M); Test environment: No obstacles within 2M radius; Test as per Fig.1 | X-axis direction: 105±10Y-axis direction: 55±10 | Mainboard Model No.: KM/K04055.5001As shown in Fig.4Oscilloscope Model: Tektronix TBS 1042, TBS 1102B |
| 4 | Residual Vibration (ms) | Room temperature 25±3 (℃); Tested with customer-provided mainboard; Oscilloscope division setting: 2V/1ms; Reading as per Fig.2; Residual vibration bifurcation criteria as per Fig.3 | 1.08-1.72 | Mainboard Model No.: KM/K04055.5001As shown in Fig.4Oscilloscope Model: Tektronix TBS 1042, TBS 1102B |
| 5 | Echo Sensitivity (us) | Room temperature 25±3 (℃); Tested with customer-provided mainboard; Obstacle: Ф75mm×1000mm PVC pipe (distance 1.5m); Oscilloscope division setting: 2V/1ms; Reading as per Fig.2 | 280-560(Tested against customer-approved lower limit sample) | - |
| 6 | Insulation Resistance (MΩ) | DC Voltage 100V | ≥100 | Insulation Resistance Tester |
| 7 | Sound Pressure (dB) | Room temperature 25±3 (℃); Distance: 30cmInput Voltage: 10Vrms 0dB=2×10⁻⁵Pa | ≥108 | Sound Level Meter |
| 8 | Operating Temperature (℃) | -40～+85 | Qualified | High and Low Temperature Chamber |
| 9 | Storage Temperature (℃) | -40～+85 | Qualified | High and Low Temperature Chamber |
| 10 | Maximum Driving Voltage (Vp-p) | Pulse Width 0.8ms, Interval 60ms | 150 | Oscilloscope |
2.Environmental characteristics
| No. | Test Item | Test Conditions | Acceptance Criteria | Sample Quantity |
| 1 | Temperature Characteristics | Product ambient temperature stabilized at -40±3 (℃) for 30min → heated to 25±3 (℃) and stabilized for 30min → heated to +85±3 (℃) and stabilized for 30min; All tests completed within 3min at room temperature 25±3 (℃) after removal from test chamber | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 2 | Damp Heat Test | Temperature: 60±2℃;Humidity: RH 90～95％;Duration: 1000 hours;Recovered at room temperature 25±3 (℃) for 2H after removal | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 3 | Shock Test | Acceleration: Sinusoidal 100G (980m/s²);Directions: 3 axes (X/Y/Z);Shock Times: 3 times per direction | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 4 | Vibration Test | Amplitude: 1.5mm; Frequency: 10～50Hz;Sweep Cycle: 5 minutes;Duration: 3 hours per axis (3 axes total) | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 5 | High Temperature Test | Held at +85℃ for 1000 hours;Recovered at room temperature 25±3 (℃) for 2H after removal | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 6 | Low Temperature Test | Held at -40℃ for 1000 hours;Recovered at room temperature 25±3 (℃) for 2H after removal | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 7 | Temperature Cycling | Low temperature: -40±3℃/1H;High temperature: +85±3℃/1H;Cycle Times: 1000 cycles;Sequence: Low temperature first, then high temperature;Recovered at room temperature 25±3 (℃) for 2H after removal | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
| 8 | Drop Test | Height: 1m free drop onto concrete floor;Times: 10 times | Compared with initial values: Sensitivity variation ≤30%; Residual vibration ≤2.4ms (including transmission fundamental wave) | 5PCS |
Notes: Each test is independent; test samples shall not be reused. Temperature-related tests shall be conducted under short-circuit conditions.
D.PACKAGE:
1) Product Packaging Requirements: Paper cartons should be stacked diagonally with neat alignment, without deformation, damage, or dirt. The sealing tape should be applied flat and firmly, with no obvious uneven edges, lifting, etc. Labels should be uniformly positioned, without dirt, lifting, or obvious tilting.
2) Product Packaging Specifications:
a. Vacuum-formed box size: 350mm*240mm*27mm
b. Inner packaging: 355mm*245mm*220mmc. Outer packaging: 520mm*380mm*245mmd. Each box contains 100pcs of products, each carton contains 1100pcs of products. The outer packaging carton contains 2200pcs of products.
3) Product Storage Method: The stacking method for products is diagonal top-to-bottom parallel stacking, avoiding staggered stacking. When placing on pallets, paper cartons must not extend beyond the pallet edges.
E.Notes
1) This product can only be used in gaseous environments and cannot be used in liquids.
2) When conducting environment-related tests on the product, tests must be performed under short-circuit conditions as required.
3) If spraying exceeds once, it must be done under short-circuit conditions.
4) During the assembly process of the product, if the positive and negative lead wires need to be touched, it is strictly prohibited to straighten the lead wires into a taut state.
5) To prevent accidents caused by work failure, the secondary product design should include a failure prevention function.
6) If an outer casing is to be added to this product, a soft rubber gasket must be used between the casing and the sensor. To avoid affecting the sensor's vibration, the front end face of the sensor must remain free; otherwise, the sensor performance will change.
7) To prevent sensor failure, work failure, or performance degradation, avoid using this product under the following or similar conditions:
a. Severe impact or vibration;
b. Long-term exposure to high temperature and high humidity environments;
c. In corrosive gases, liquids, or sea breeze;
d. In environments with dissolvable organic substances;
e. In dusty environments;
f. Exceeding the allowed input voltage.
8) To prevent additional stress on the leads, do not apply external force to leads that have just been soldered. If it is necessary to do so, first clamp the root of the lead.
9) The quality guarantee period is one year from the date of product delivery. Within the guarantee period, defective sensors caused by the manufacturer's responsibility can be replaced free of charge. The following situations are not covered by the guarantee:
a. Improper use or handling by the user;
b. Modifications or repairs performed by the user;
c. Any other situations not the manufacturer's responsibility, such as natural disasters, accidents, etc.
This quality guarantee applies only to product replacement. Any losses caused by sensor failure or invalidity and the costs of replacing products are not covered by this guarantee.
F. Angle schematic diagram
Brief Description of Angle Test:
X Direction
1. Fix the product on the test fixture and adjust the fixture angle to 0 degrees, then read the echo sensitivity △t value using an oscilloscope;
2. Rotate the test fixture to position 1 to the left, making the echo sensitivity half of the △t value, and read the test fixture angle X1 value;
3. Rotate the test fixture to position 4 to the right, making the echo sensitivity half of the △t value, and read the test fixture angle X2 value;
4. Calculate the X direction angle value as X1 + X2.
Y Direction
1. Perform the test following the method of X direction angle test.
Waveform schematic diagram
Finished product testing and angle testing motherboard
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