Telematics Box HQT401

Telematics box, as the so-called t-box, vehicle black box or smart box, is being widely used in fields such as insurance, periodic tenancy, fleet management, driver behavior management, vehicle tracking & recovery...

Telematics box, as the so-called t-box, vehicle black box or smart box, is being widely used in fields such as insurance, periodic tenancy, fleet management, driver behavior management, vehicle tracking, and stolen vehicle recovery (SVR). The tbox makes a very important role in the whole telematics system.

In-house designed, developed and manufactured by Hopechart, one of the telematics device suppliers, the t-box HQT401 comes with GPS and GNSS positioning module, 4G LTE module, Wi-Fi hotspot, Bluetooth, internal battery, CAN Bus and RS232 ports. As the tbox HQT401 adopts design of vehicular gauge, it can stand extreme working environment and conditions. The tbox can realize vehicle remote tracking and monitoring, vehicle control, security detection and warning, vehicle remote diagnostics and breakdown call. Like our other tbox or tachograph products, the HQT401 can be also work together with the double Din Android multimedia screen.

II.Scope of application of Vehicle Tbox 4G LTE:

Vehicle location monitoring, vehicle status monitoring, vehicle control, firmware upgrade, B-CALL, CAN Bus tachograph, remote diagnostics, driving behavior analysis, hotspot share, wireless communication, information encryption, vehicle anti-theft.

III.Summary of Vehicle Tbox 4G LTE

The Tbox 4G LTE can be installed under the dashboard, under the seat of driver and in the trunk. It can be fixed with screws, Velcro or by customized method. Adaptively powered by vehicle power 12V or 24V, it can interact with vehicle via CAN interface.

Tbox has been integrated with MCU, data storage module, GNSS module, wireless communication module, and CAN transceiver module. Meanwhile, the preserved interfaces support extension of external devices, such as infotainment screen, and all kinds of sensors.

Tbox System Block Diagram

Ⅳ. Function & feature of Vehicle Tbox 4G LTE

Category	Function	Description
Time & date	Time & date	Provide time and date (accurate to 1ms)
	Automatic self-check	Automatic time correction, error less than 5s per day
Positioning		Support GPS/BD positioning and A-GPS, accuracy 5m. Support mobile base tower positioning.
Communication	Mobile telecom	FDD-LTE/ TDD-LTE/ TD-SCDMA/ UMTS/ EDGE/ GSM/ EVDO/ CDMA
	SMS	Support parameter inquiry and setup by sending SMS order.
	Multi-platform connection	Support connection with two or more platforms. Support sending different data to different platforms.
	BT	Bluetooth 4.0 BLE, for data communication
Data gathering	CAN data gathering	Can gather vehicle data through 3 channels of high speed CAN
	Audio signal gathering	With noise suppression feature, support external passive MIC, support audio monitoring
	Voltage gathering	Gather and report main battery voltage and backup battery capacity
Data storage	Real-time data storage	The collected real-time data can be saved into the Tbox internal storage medium based on interval of 10ms. These data can be readout on computer.
Datarecovering		If network disconnects, the real-time data will be saved into the local storage medium and be resent to the monitoring platform once network recovers.
Independent operation		Tbox can continue to work when external power cuts off. The data of the first 30 minutes after power cuts off can be guaranteed to be sent to the platform.
Driver behavior		Analyzing driver behavior in real time, the device will report the events to the back-office platform once detecting bad driving behavior, including harsh acceleration, harsh turn, harsh deceleration and cornering without light.
Device management	Power management	Five modes: working mode, monitoring mode, sleep mode, off mode, storage mode
	Self-check	When being powered on and used, device will automatically check status of GPS and network and display the status by LED indicators.
	Device control	Support remote and local program upgrading, parameter configuration and etc.
Data interaction	USB	Data export, parameter configuration and local upgrading, communication with display screen.
	RS232	Parameter configuration, connection with external sensors.
	CAN	Communication withCAN Bus and vehicle body. Support ISO 11898and SAE J1939.
Hardware encryption		Support SM3, SM4, universal symmetric algorithm and asymmetric algorithm.
OTA		Support upgrading other ECUs of vehicle, which need to be confirmed with ECU manufacturers.
B-CALL		Support breakdown call
Wi-Fi		Provide Wi-Fi hotspot

V. Definition of Interface

Main interface

PIN	Function	Remark		PIN	Function	Remark
1	KL15	ACC signal		21	Spare
2	IG_ON			22	Charging signal	Highlevel wakeup
3	GND			23	Charging signal	Low level wakeup
4	Digital signal 1			24	Spare
5	MIC OUT GND			25	MIC OUT	Can be connected to IHU
6	MIC IN	Microphone input		26	MIC IN GND
7	Digital Signal 2			27	Spare
8	LINE OUT			28	LINE OUT -
9	Speaker +			29	Speaker -
10	BTN GND			30	BTN
11	Digital Signal 3			31	BTN CONN
12	Spare			32	24V/ 12V output
13	5V power	500mA output		33	Spare
14	RS232_RX1			34	RS232_TX1
15	RS232_TX2			35	RS232_RX2
16	Spare			36	Spare
17	CAN3_H	Conform to CAN2.0B		37	CAN3_L	Conform to CAN2.0B
18	CAN2_L	Conform to CAN2.0B		38	CAN2_H	Conform to CAN2.0B
19	CAN1_H	Conform to CAN2.0B, support CAN wakeup		39	CAN1_L	Conform to CAN2.0B, support CAN wakeup
20	KL30	Power		40	KL31	GND

VI. Appearance of Vehicle Tbox 4G LTE

Dimension: 138mm*78mm*30mm
Weight: max. 400g (with battery)
Material of housing: ABS+PC

VII. Product quality design of Vehicle Tbox 4G LTE

Design life: no less than 5 years or 200,000 km
MTBF: no less than 8000h
12MIS: 50
Production quality target: below 200 PPM

Appendix.Positioning & networking of Vehicle Tbox 4G LTE

1)Positioning feature

No.	Item	Spec
1	Cold start time	≤35S (in open environment)
2	Reacquisition time	≤1S (in open environment)
3	Hot start time	<1.5S (in open environment)
4	Static drift	<10m
5	Positioning accuracy	5m (in open environment)
6	Acquisition sensitivity	-150dBm
7	Tracking sensitivity	-160dBm
8	A-GPS	Support

2)Networking features

No.	Item	Spec
1	Communication mode	FDD-LTE/TDD-LTE/TD-SCDMA/UMTS/EDGE/ GSM/EVDO/CDMA;
2	Range of band	LTE-TDD Quad-band Band 38/39/40/41; LTE-FDD Tri-band Band 1/3/8; TD-SCDMA Dual-band Band 34/39; UMTS Dual-band Band 1/8; GSM Dual-band B3/B8; EVDO BC0；
3	Maximum transmitting power	Class 4 (2 W) for GSM900 Class 1 (1 W) for GSM1800 Class E2 (0.5 W) for EDGE900 Class E2 (0.4 W) for EDGE1800 Class 3 (0.25 W) for TD-LTE/FDD-LTE/TD-SCDMA/UMTS
4	Receive sensitivity	Acquisition -158dBm Tracking -162dBm
5	RF impedance	50Ω

Contact Hopechart IoT Technology for more telematics box