CN106774239B - A kind of Portable engineering vehicle vehicle-mounted ECU detection device - Google Patents
A kind of Portable engineering vehicle vehicle-mounted ECU detection device Download PDFInfo
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- CN106774239B CN106774239B CN201611042650.8A CN201611042650A CN106774239B CN 106774239 B CN106774239 B CN 106774239B CN 201611042650 A CN201611042650 A CN 201611042650A CN 106774239 B CN106774239 B CN 106774239B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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Abstract
A kind of Portable engineering vehicle vehicle-mounted ECU detection device of the invention, comprising: main processor modules, power management module, power module, display module, input module, output module, key control module and communication interface modules;Power module, display module, input module, output module, communication interface modules and key control module are connect with main processor modules, communication interface modules also passes through the key control module and connect with the output module, and power management module is power module power supply.The present invention not only can be with output signal drive control device port, it can also receive and detect the input signal of controller, and has CAN, RS232 communication function, support a variety of flexibly convenient and fast power supply modes, have the characteristics that small in size, portable, low in energy consumption, input/output function is congruent, a series of without in the environment of complete testing conditions particularly suitable for production test scene, whether diagnosis Vehicle Controller function is normal, quick positioning failure.
Description
Technical field
The present invention relates to engineering truck Vehicle Controller detection fields, more particularly to a kind of portable, low-power consumption, suitable debugging
Scene uses, provides the engineering truck vehicle-mounted ECU detection device of a variety of input interfaces, a variety of output signals.
Background technique
Engineering truck controller is the control axis of engineering truck, is the heart of Full Vehicle System, the quality of performance is directly
Whether determining that vehicle works normally, therefore judges engineering truck controller performance quality and occur in engineering truck controller
Its failure is positioned when failure just to need by means of specific detection device.It at present can be right in laboratory conditions on domestic and international market
Testing equipment numerous and complicated that the engineering truck controller not dispatched from the factory is detected, vdiverse in function, powerful, but they are mostly
Have the characteristics that volume is big, power consumption is high, high cost, is typically due to the reasons such as not portable, power supply is difficult, at high cost, is not suitable for
The controller under industry control site environment is had been mounted in detection.Therefore, a kind of portable, low-power consumption, low cost are designed, is fitted
The idea of the engineering truck controller detection device at the industry control scene simple and crude for condition is come into being.
Summary of the invention
It is an object of the invention to design a kind of portable, low-power consumption, low cost is provided simultaneously with Multiinputoutput function
Engineering truck controller detection device, to be carried out in input/output port of the occasions such as industry control scene to engineering truck controller
Functional test, judges whether controller works normally, where quick positioning failure.
The technical solution for realizing the aim of the invention is as follows: a kind of Portable engineering vehicle vehicle-mounted ECU detection device, packet
It includes: main processor modules, power management module, power module, display module, input module, output module, key control module
And communication interface modules；
The power module, display module, input module, output module, communication interface modules and key control module
It is connect with the main processor modules, the communication interface modules also passes through the key control module and the output module
Connection, the power management module are power module power supply.
As a further improvement, the input module includes digital-quantity input interface, frequency quantity input interface and simulation
Measure input interface；The output module includes digital-quantity output interface, frequency quantity output interface and analog output interface circuit；Institute
Power management module is stated to include controller power source output supply, reset control and external sensor power supply circuit；The communication
Interface module includes CAN interface module, RS232 multi-protocols serial port module and its matching and protection circuit；
The simulated measurement input circuit includes analog quantity current input circuit, analog quantity resistance input circuit and analog quantity
Voltage input circuit.
As a further improvement, the digital input circuit includes that P-channel enhancement type metal-oxide-semiconductor, the first N-channel are enhanced
Metal-oxide-semiconductor, the first pull-up resistor, the second pull-up resistor, the first pull down resistor, the second pull down resistor [Rdown2], first diode,
Second diode, first capacitor, first resistor, Pull_UP interface, Pull_Down interface, DigitalIN interface, CPU_IO connect
Mouth, power Vcc and power supply Vbat；
The drain D of P-channel enhancement type metal-oxide-semiconductor is connected with power Vcc, and the source S of P-channel enhancement type metal-oxide-semiconductor is sequentially connected in series
Second pull-up resistor, first diode, the drain D of the first pull down resistor and the enhanced metal-oxide-semiconductor of the first N-channel, the first N
The source S of channel enhancement metal-oxide-semiconductor is grounded；
The anode of the first diode is connected with the second pull-up resistor, the grid G and Pull_ of P-channel enhancement type metal-oxide-semiconductor
The connection of UP interface, is provided with the first pull-up resistor between the grid G and power Vcc of the P-channel enhancement type metal-oxide-semiconductor；
The grid G of the enhanced metal-oxide-semiconductor of first N-channel is connected with Pull_Down interface, the enhanced MOS of the first N-channel
The grid G of pipe also passes through the second pull down resistor ground connection；
The anode of the connection of the cathode of power supply Vbat and the second diode, second diode is grounded by first capacitor；
Digital IN interface pass sequentially through first resistor, the cathode of first diode and the second diode anode and
The connection of CPU_IO interface.
As a further improvement, the analog quantity current input circuit includes power supply Vsense, power Vcc, CPU_
Analog_In interface, high precision sampling resistance, the second capacitor and third diode；
Power supply Vsense connection CPU_Analog_In interface, the power supply Vsense and the CPU_Analog_In interface
Between and be connected to three road circuits, circuit one is the circuit being grounded by high precision sampling resistance, and circuit two is to pass through the second capacitor
The circuit of ground connection, circuit three are the circuit directly being connect by third diode with power Vcc, the cathode of the third diode
It is connected with power Vcc.
As a further improvement, the analog quantity resistance input circuit include power Vcc, CPU_Analog_In interface, to
Measuring resistance Rin, high precision sampling resistance, third capacitor and the 4th diode；
CPU_Analog_In interface is grounded by testing resistance, the CPU_Analog_In interface and testing resistance it
Between respectively and be connected to three road circuits, circuit one is the circuit of concatenation and power Vcc, and circuit two is the electricity for passing through third capacity earth
Road, circuit three are the circuit directly being connect by the 4th diode with power Vcc, the cathode and power supply of the 4th diode
Vcc connection；
As a further improvement, the analog quantity voltage input circuit includes power Vcc, voltage interface to be measured, CPU_
Analog_In interface, pull-up resistor, pull down resistor, bleeder circuit, the 5th diode and the 4th capacitor；
Voltage interface to be measured is connected by potential-divider network with CPU_Analog_In interface, voltage interface to be measured and partial pressure net
Two-way circuit is provided between network, circuit one is the circuit for being sequentially connected in series pull-up resistor, switch and power Vcc, and circuit two is
It is sequentially connected in series switch, pull down resistor and the circuit being grounded；Two-way electricity is provided between CPU_Analog_In interface and potential-divider network
Road, circuit one are the circuit being connect by the 5th diode with power Vcc, the cathode and the power supply of the 5th diode
Vcc connection, circuit two are the circuit by the 4th capacity earth；
As a further improvement, the frequency quantity output circuit include power supply Vbat, I/O interface, comparing unit CCU6,
Power Switch, second resistance, 3rd resistor, the 6th diode and EMI Filter；
The comparing unit CCU6 is connected with Power Switch, and the Power Switch includes Control Logic
And the second enhanced metal-oxide-semiconductor of N-channel, the grid G of the Control Logic and the enhanced metal-oxide-semiconductor of the second N-channel connect
It connects, between the comparing unit CCU6 and Power Switch and is connected to a second resistance, another termination of the second resistance
The drain D on ground, the enhanced metal-oxide-semiconductor of the second N-channel is connected with power supply Vbat, and source S is sequentially connected in series 3rd resistor, EMI
Filter and I/O interface between the 3rd resistor and EMI Filter and is connected to the 6th diode, the described 6th 2
The plus earth of pole pipe.
As a further improvement, the detection device has been internally integrated BootLoader software function module.
As a further improvement, the main processor modules are Infineon's processor C166.
Compared with prior art, the present invention its remarkable advantage are as follows: the present invention not only can be with output signal drive control device end
Mouthful, the input signal of controller can also be received and detect, and have CAN, RS232 communication function, it is a variety of flexibly convenient to support
Power supply mode, such as mobile power source, laptop USB interface, Switching Power Supply have small in size, portable, low in energy consumption, defeated
Enter output function congruence feature, it is existing particularly suitable for production tests such as engineering truck controller erecting bed, outfield debugging
Field is a series of without in the environment of complete testing conditions, and whether diagnosis Vehicle Controller function is normal, quick positioning failure.
Present invention is further described in detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is schematic block circuit diagram of the invention.
Fig. 2 is digital input circuit figure.
Fig. 3 is analog quantity current input circuit figure.
Fig. 4 is analog quantity resistance input circuit figure.
Fig. 5 is analog quantity voltage input circuit figure.
Fig. 6 is frequency quantity output circuit figure.
Specific embodiment
In conjunction with attached drawing, a kind of Portable engineering vehicle vehicle-mounted ECU detection device of the invention, comprising: main processor modules,
Power management module, power module, display module, input module, output module, key control module and communication interface mould
Block；
The power module, display module, input module, output module, communication interface modules and key control module
It is connect with the main processor modules, the communication interface modules also passes through the key control module and the output module
Connection, the power management module are power module power supply.
The input module includes digital-quantity input interface, frequency quantity input interface and analog input interface；It is described
Output module includes digital-quantity output interface, frequency quantity output interface and analog output interface circuit；The communication interface modules
Including CAN interface module, RS232 multi-protocols serial port module and its matching and protection circuit；
The simulated measurement input circuit includes analog quantity current input circuit, analog quantity resistance input circuit and analog quantity
Voltage input circuit.
The digital input circuit includes P-channel enhancement type metal-oxide-semiconductor, the enhanced metal-oxide-semiconductor of the first N-channel, the first pull-up
Resistance Rup1, the second pull-up resistor Rup2, the first pull down resistor Rdown1, the second pull down resistor Rdown2, first diode D1,
Second diode D2, first capacitor C1, first resistor R1, Pull_UP interface, Pull_Down interface, Digital IN interface,
CPU_IO interface, power Vcc and power supply Vbat；
The drain D of P-channel enhancement type metal-oxide-semiconductor is connected with power Vcc, and the source S of P-channel enhancement type metal-oxide-semiconductor is sequentially connected in series
The leakage of second pull-up resistor Rup2, first diode D1, the first pull down resistor Rdown1 and the enhanced metal-oxide-semiconductor of the first N-channel
Pole D, the source S ground connection of the enhanced metal-oxide-semiconductor of the first N-channel；
The anode of the first diode D1 is connected with the second pull-up resistor Rup2, the grid G of P-channel enhancement type metal-oxide-semiconductor
It is connected with Pull_UP interface, the first pull-up electricity is provided between the grid G and power Vcc of the P-channel enhancement type metal-oxide-semiconductor
Hinder Rup1；
The grid G of the enhanced metal-oxide-semiconductor of first N-channel is connected with Pull_Down interface, the enhanced MOS of the first N-channel
The grid G of pipe also passes through the second pull down resistor Rdown2 ground connection；
The anode of the connection of the cathode of power supply Vbat and the second diode D2, the second diode D2 passes through first capacitor C1
Ground connection；
Digital IN interface passes sequentially through first resistor R1, the cathode of first diode D1 and the second diode D2's
Anode is connected with CPU_IO interface.
The analog quantity current input circuit includes power supply Vsense, power Vcc, CPU_Analog_In interface, high-precision
Sampling resistor Rs1, the second capacitor C2 and third diode D3；
Power supply Vsense connection CPU_Analog_In interface, the power supply Vsense and the CPU_Analog_In interface
Between and be connected to three road circuits, circuit one is the circuit being grounded by high precision sampling resistance Rs1, and circuit two is to pass through the second electricity
Hold the circuit of C2 ground connection, circuit three is the circuit directly connecting by third diode D3 with power Vcc, the third diode
The cathode of D3 is connected with power Vcc.
The analog quantity resistance input circuit includes power Vcc, CPU_Analog_In interface, testing resistance Rin, high-precision
Spend sampling resistor Rs2, third capacitor C3 and the 4th diode D4；
CPU_Analog_In interface is grounded by testing resistance Rin, the CPU_Analog_In interface and electricity to be measured
Respectively and three road circuits are connected between resistance Rin, and circuit one be the circuit for concatenating Rs2 and power Vcc, and circuit two is that pass through third electric
Hold the circuit of C3 ground connection, circuit three is the circuit directly connecting by the 4th diode D4 with power Vcc, the 4th diode
The cathode of D4 is connected with power Vcc.
The analog quantity voltage input circuit includes power Vcc, voltage interface to be measured, CPU_Analog_In interface, pull-up
Resistance Rup, pull down resistor Rdown, bleeder circuit, the 5th diode D5 and the 4th capacitor C4；
Voltage interface to be measured is connected by potential-divider network with CPU_Analog_In interface, voltage interface to be measured and partial pressure net
Two-way circuit is provided between network, circuit one is the circuit for being sequentially connected in series pull-up resistor Rup, switch and power Vcc, circuit two
To be sequentially connected in series switch, pull down resistor Rdown and the circuit being grounded；It is arranged between CPU_Analog_In interface and potential-divider network
There is two-way circuit, circuit one is the circuit connecting by the 5th diode D5 with power Vcc, the cathode of the 5th diode D5
It is connect with the power Vcc, circuit two is the circuit being grounded by the 4th capacitor C4.
The frequency quantity output circuit includes power supply Vbat, I/O interface, comparing unit CCU6, Power Switch, second
Resistance R2,3rd resistor R3, the 6th diode D6 and EMI Filter；
The comparing unit CCU6 is connected with Power Switch, and the Power Switch includes Control Logic
And the second enhanced metal-oxide-semiconductor of N-channel, the grid G of the Control Logic and the enhanced metal-oxide-semiconductor of the second N-channel connect
It connects, between the comparing unit CCU6 and Power Switch and is connected to a second resistance R2, second resistance R2's is another
End ground connection, the drain D of the enhanced metal-oxide-semiconductor of the second N-channel connects with power supply Vbat, source S be sequentially connected in series 3rd resistor R3,
EMI Filter and I/O interface between the 3rd resistor R3 and EMI Filter and is connected to a 6th diode D6, institute
State the plus earth of the 6th diode D6.
The detection device has been internally integrated BootLoader software function module.
The main processor modules are Infineon's processor C166.
Further detailed description is done to the present invention below with reference to embodiment.
Embodiment
A kind of Portable engineering vehicle vehicle-mounted ECU detection device of the present invention is related to multiple function such as signal output, signal input
Energy module, is suitable for engineering truck Vehicle Controller detection field.
The present invention includes: main processor modules, power management module, power module, display module, input module, output
Module, key control module and communication interface modules；Power module, display module, input module, output module, communication connect
Mouth mold block and key control module are connect with main processor modules, and communication interface modules also passes through the key control module
It is connect with output module, power management module is power module power supply.
Input module includes digital-quantity input interface, frequency quantity input interface and analog input interface；Output module
Including digital-quantity output interface, frequency quantity output interface and analog output interface circuit；Power management module includes controller electricity
Source output supply resets control and external sensor power supply circuit；Power management module realizes the power supply to entire controller
Incoming level conversion, the supply voltage of+5V needed for also exportable controller internal circuit ,+3.3V, and+6V are realized in management
The driving of PWM/ digital quantity export upper pull-up voltage.
Communication interface modules includes CAN interface module, RS232 multi-protocols serial port module and its matching and protection electricity
Road has strong anti-interference ability.
High/low, frequency quantity frequency, the analog quantity current value of digital quantity of the display module to show input/output.
It is defeated that key control module can be used for controlling CAN, RS232, digital output, analog output, frequency quantity output etc.
Out whether the unlatching of signal, when engineering truck controller to be measured by key disconnection detection without that can be filled when detecting above-mentioned signal
The corresponding output set reduces system power dissipation, promotes operational efficiency.The output of output module is enabled by key control module control
System realizes output on demand, closes unwanted output function, reduces system power dissipation.
Simulated measurement input circuit includes analog quantity current input circuit, analog quantity resistance input circuit and analog quantity voltage
Input circuit, analog input interface support the voltage of detection input, electric current, resistance value.
Fig. 2 is digital input circuit, supports that software configuration is pull-up input/drop-down input, is respectively used to engineering truck
Controller low level/high level output is detected.Digital-quantity input interface is supported in a manner of software programming, and height is selected as
Level input is effectively or low level input is effective.
Digital input circuit includes P-channel enhancement type metal-oxide-semiconductor, the enhanced metal-oxide-semiconductor of the first N-channel, the first pull-up resistor
Rup1, the second pull-up resistor Rup2, the first pull down resistor Rdown1, the second pull down resistor Rdown2, first diode D1, second
Diode D2, first capacitor C1, first resistor R1, Pull_UP interface, Pull_Down interface, Digital IN interface, CPU_
I/O interface, power Vcc and power supply Vbat；
The drain D of P-channel enhancement type metal-oxide-semiconductor is connected with power Vcc, and the source S of P-channel enhancement type metal-oxide-semiconductor is sequentially connected in series
The leakage of second pull-up resistor Rup2, first diode D1, the first pull down resistor Rdown1 and the enhanced metal-oxide-semiconductor of the first N-channel
Pole D, the source S ground connection of the enhanced metal-oxide-semiconductor of the first N-channel；
First diode D1 anode connected with the second pull-up resistor Rup2, the grid G of P-channel enhancement type metal-oxide-semiconductor with
The connection of Pull_UP interface, is provided with the first pull-up resistor Rup1 between the grid G and power Vcc of P-channel enhancement type metal-oxide-semiconductor；
The grid G of the enhanced metal-oxide-semiconductor of first N-channel is connected with Pull_Down interface, the enhanced metal-oxide-semiconductor of the first N-channel
Grid G also passes through the second pull down resistor Rdown2 ground connection；The connection of the cathode of power supply Vbat and the second diode D2, the second diode
The anode of D2 is grounded by first capacitor C1；Digital IN interface pass sequentially through first resistor R1, first diode D1 it is negative
The anode of pole and the second diode D2 are connected with CPU_IO interface.
Pull_UP interface and Pull_Down interface are respectively the GPIO for accessing CPU, are used as the enabled switch of pullup/pulldown,
Pull_UP interface is arranged in software, Pull_Down interface exports low level, can open pull-up switch, and closing pulls down switch, will
Circuit configuration is exported at pull-up, to detect the effective digital quantity input of low level；Pull_UP interface, Pull_ is arranged in software
Down interface exports high level, can open and pull down switch, and closes pull-up switch, circuit configuration is exported at drop-down, to examine
Survey the effective digital quantity input of high level.
Analog quantity current input circuit as shown in Figure 3, the analog quantity current input circuit include power supply Vsense, power supply
Vcc, CPU_Analog_In interface, high precision sampling resistance Rs1, the second capacitor C2 and third diode D3；Power supply Vsense
CPU_Analog_In interface is connected, between power supply Vsense and the CPU_Analog_In interface and is connected to three road circuits, electricity
The circuit that Lu Yiwei is grounded by high precision sampling resistance Rs1, circuit two are the circuit being grounded by the second capacitor C2, circuit three
Directly to pass through the circuit that third diode D3 is connect with power Vcc, the cathode of third diode D3 is connected with power Vcc.It surveys
The voltage value at electric current to be measured both ends Rs1 after Rs1 is measured, and then current value to be measured is calculated.
Analog quantity resistance input circuit as shown in Figure 4, which includes power Vcc, CPU_
Analog_In interface, testing resistance Rin, high precision sampling resistance Rs2, third capacitor C3 and the 4th diode D4；CPU_
Analog_In interface is grounded by testing resistance Rin, between the CPU_Analog_In interface and testing resistance Rin respectively
And three road circuits are connected to, circuit one is the circuit for concatenating Rs2 and power Vcc, and circuit two is the electricity being grounded by third capacitor C3
Road, circuit three are the circuit directly being connect by the 4th diode D4 with power Vcc, the cathode and electricity of the 4th diode D4
Source Vcc connection；It connects after testing resistance Rin access circuit with Rs2, measures the voltage value at testing resistance both ends, and then calculate
To testing resistance value.
Analog quantity voltage input circuit as shown in Figure 5, which includes power Vcc, voltage to be measured
Interface, CPU_Analog_In interface, pull-up resistor Rup, pull down resistor Rdown, bleeder circuit, the 5th diode D5 and
Four capacitor C4；Voltage interface to be measured is connected by potential-divider network with CPU_Analog_In interface, voltage interface to be measured and partial pressure net
Two-way circuit is provided between network, circuit one is the circuit for being sequentially connected in series pull-up resistor Rup, switch and power Vcc, circuit two
To be sequentially connected in series switch, pull down resistor Rdown and the circuit being grounded；It is arranged between CPU_Analog_In interface and potential-divider network
There is two-way circuit, circuit one is the circuit connecting by the 5th diode D5 with power Vcc, the cathode of the 5th diode D5
It is connect with the power Vcc, circuit two is the circuit being grounded by the 4th capacitor C4；Its unlatching can be arranged in the circuit by software
With closing, potential-divider network can be divided input voltage, and the voltage value for making it into CPU analog acquisition port is allowing
In range, the voltage range that can be sampled is widened.
As shown in Fig. 6 frequency quantity input circuit, which includes power supply Vbat, I/O interface, comparing unit
CCU6, Power Switch, second resistance R2,3rd resistor R3, the 6th diode D6 and EMI Filter；
Comparing unit CCU6 is connected with Power Switch, the Power Switch include Control Logic and
The enhanced metal-oxide-semiconductor of second N-channel, the Control Logic are connected with the grid G of the enhanced metal-oxide-semiconductor of the second N-channel,
Between the comparing unit CCU6 and Power Switch and it is connected to a second resistance R2, another termination of second resistance R2
The drain D on ground, the enhanced metal-oxide-semiconductor of the second N-channel is connected with power supply Vbat, and source S is sequentially connected in series 3rd resistor R3, EMI
Filter and I/O interface between the 3rd resistor R3 and EMI Filter and is connected to a 6th diode D6, described
The plus earth of six diode D6.
By comparing the capture comparison module of unit CCU6, CPU can export different frequency, the PWM wave of different duty
Shape, PWM cycle opens and shuts off metal-oxide-semiconductor, and then generating in output end, there is the PWM of certain driving capability to export.
The present invention is internally integrated BootLoader software function module, supports through CAN, RS232 bus to detection device
Bottom firmware be updated, without using the Flash programming such as traditional JTAG mode, be not necessarily to opening detecting device shell
Conveniently and efficiently realize bottom firmware update, Function Extension.Main processor modules select Infineon's processor C166, working frequency
40MHz, 32 BITBUS network width have integrated port abundant, can meet demand of system software without extending out FLASH and RAM,
The complete machine cost and system power dissipation for being conducive to control the present apparatus, build input and output peripheral circuit, and extension CAN, RS232 communication is total
Line carries out Function detection to the input/output port of engineering truck controller.CAN, RS232 communication bus interface of detection device
It can receive and send CAN signal, RS232 signal, it is docked with the CAN of engineering truck controller, RS232 interface
CAN, RS232 communication function of engineering truck controller are detected.
The present invention has the function of digital output, controls it and exports high/low level, is accessed engineering truck controller
Digital quantity input port, can the digital quantity input function to engineering truck controller detect；With PWM (Pulse-
Width Modulation pulsewidth modulation) output function, in a manner of software control, output frequency and duty ratio are all adjustable
PWM waveform is accessed the frequency quantity input end mouth of engineering truck controller, can frequency quantity to engineering truck controller it is defeated
Enter function to be detected；Have the function of analog input, the corresponding analog output of engineering truck controller is accessed into the present apparatus
Analog input interface, can the analog output function to engineering truck controller detect.
Claims (7)
1. a kind of Portable engineering vehicle vehicle-mounted ECU detection device characterized by comprising main processor modules, power management
Module, power module, display module, input module, output module, key control module and communication interface modules；
The power module, display module, input module, output module, communication interface modules and key control module with
The main processor modules connection, the communication interface modules also passes through the key control module and the output module connects
It connects, the power management module is power module power supply；
The input module includes digital-quantity input interface, frequency quantity input interface and analog input interface；The output
Module includes digital-quantity output interface, frequency quantity output interface and analog output interface circuit；The communication interface modules includes
CAN interface module, RS232 multi-protocols serial port module and its matching and protection circuit；
The simulated measurement input circuit includes analog quantity current input circuit, analog quantity resistance input circuit and analog quantity voltage
Input circuit；
The digital input circuit includes P-channel enhancement type metal-oxide-semiconductor, the enhanced metal-oxide-semiconductor of the first N-channel, the first pull-up resistor
(Rup1), the second pull-up resistor (Rup2), the first pull down resistor (Rdown1), the second pull down resistor (Rdown2), the one or two pole
Manage (D1), the second diode (D2), first capacitor (C1), first resistor (R1), Pull_UP interface, Pull_Down interface,
Digital IN interface, CPU_IO interface, power Vcc and power supply Vbat；
The drain D of P-channel enhancement type metal-oxide-semiconductor is connected with power Vcc, and the source S of P-channel enhancement type metal-oxide-semiconductor is sequentially connected in series second
Pull-up resistor (Rup2), first diode (D1), the first pull down resistor (Rdown1) and the enhanced metal-oxide-semiconductor of the first N-channel
Drain D, the source S ground connection of the enhanced metal-oxide-semiconductor of the first N-channel；
Anode and the second pull-up resistor (Rup2) connection of the first diode (D1), the grid G of P-channel enhancement type metal-oxide-semiconductor
It is connected with Pull_UP interface, the first pull-up electricity is provided between the grid G and power Vcc of the P-channel enhancement type metal-oxide-semiconductor
It hinders (Rup1)；
The grid G of the enhanced metal-oxide-semiconductor of first N-channel is connected with Pull_Down interface, the enhanced metal-oxide-semiconductor of the first N-channel
Grid G also passes through the second pull down resistor (Rdown2) ground connection；
The connection of the cathode of power supply Vbat and the second diode (D2), the anode of second diode (D2) pass through first capacitor
(C1) it is grounded；
Digital IN interface passes sequentially through first resistor (R1), the cathode of first diode (D1) and the second diode (D2)
Anode connected with CPU_IO interface.
2. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the simulation
Amount current input circuit includes power supply Vsense, power Vcc, CPU_Analog_In interface, high precision sampling resistance (Rs1), the
Two capacitors (C2) and third diode (D3)；
Power supply Vsense connection CPU_Analog_In interface, between the power supply Vsense and the CPU_Analog_In interface
And three road circuits are connected to, circuit one is the circuit being grounded by high precision sampling resistance (Rs1), and circuit two is to pass through the second capacitor
(C2) circuit being grounded, circuit three are the circuit directly being connect by third diode (D3) with power Vcc, the three or two pole
The cathode of pipe (D3) is connected with power Vcc.
3. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the simulation
Measuring resistance input circuit includes power Vcc, CPU_Analog_In interface, testing resistance (Rin), high precision sampling resistance
(Rs2), third capacitor (C3) and the 4th diode (D4)；
CPU_Analog_In interface is grounded by testing resistance (Rin), the CPU_Analog_In interface and testing resistance
(Rin) respectively and three road circuits are connected between, and circuit one is the circuit for concatenating (Rs2) and power Vcc, and circuit two is passes through third
The circuit of capacitor (C3) ground connection, circuit three are directly to pass through the circuit that connect with power Vcc of the 4th diode (D4), the described 4th
The cathode of diode (D4) is connected with power Vcc.
4. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the simulation
Amount voltage input circuit includes power Vcc, voltage interface to be measured, CPU_Analog_In interface, pull-up resistor (Rup), drop-down electricity
Hinder (Rdown), bleeder circuit, the 5th diode (D5) and the 4th capacitor (C4)；
Voltage interface to be measured is connected with CPU_Analog_In interface by potential-divider network, voltage interface to be measured and potential-divider network it
Between be provided with two-way circuit, circuit one is the circuit for being sequentially connected in series pull-up resistor (Rup), switch and power Vcc, and circuit two is
It is sequentially connected in series switch, pull down resistor (Rdown) and the circuit being grounded；It is arranged between CPU_Analog_In interface and potential-divider network
There is two-way circuit, circuit one is the circuit connecting by the 5th diode (D5) with power Vcc, the 5th diode (D5)
Cathode is connect with the power Vcc, and circuit two is the circuit being grounded by the 4th capacitor (C4).
5. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the frequency
Amount output circuit includes power supply Vbat, I/O interface, comparing unit CCU6, Power Switch, second resistance (R2), third electricity
Hinder (R3), the 6th diode (D6) and EMI Filter；
The comparing unit CCU6 is connected with Power Switch, the Power Switch include Control Logic and
The enhanced metal-oxide-semiconductor of second N-channel, the Control Logic are connected with the grid G of the enhanced metal-oxide-semiconductor of the second N-channel,
Between the comparing unit CCU6 and Power Switch and be connected to a second resistance (R2), the second resistance (R2) it is another
End ground connection, the drain D of the enhanced metal-oxide-semiconductor of the second N-channel are connected with power supply Vbat, and source S is sequentially connected in series 3rd resistor
(R3), EMI Filter and I/O interface between the 3rd resistor (R3) and EMI Filter and are connected to the six or two pole
It manages (D6), the plus earth of the 6th diode (D6).
6. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the detection
Device has been internally integrated BootLoader software function module.
7. a kind of Portable engineering vehicle vehicle-mounted ECU detection device according to claim 1, which is characterized in that the main place
Reason device module is Infineon's processor C166.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107947125A (en) * | 2017-11-02 | 2018-04-20 | 湖北三江航天万峰科技发展有限公司 | A kind of vehicle-mounted universal controller |
| CN109062113A (en) * | 2018-09-03 | 2018-12-21 | 山海特种装备股份有限公司 | A kind of aircraft air source truck electrical control gear |
| SG10201810152VA (en) * | 2018-11-14 | 2020-06-29 | Delphi Tech Ip Ltd | Automotive circuit between ecu and powertrain component |
| CN111936949A (en) * | 2020-03-25 | 2020-11-13 | 深圳市汇顶科技股份有限公司 | Driving circuit and related chip |
| CN111752264B (en) * | 2020-08-05 | 2024-10-15 | 上海熠速信息技术有限公司 | Digital signal conditioning device |
| CN111983437B (en) * | 2020-08-25 | 2023-09-08 | 深圳市旗开电子有限公司 | 5G module product GPIO port test circuit and test method |
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