Utility model content
A purpose of the present utility model is to solve at least the above and/or defect, and provides the advantage that at least will be described later.
This utility model is it is also an object that provide a kind of portable digital steering wheel test equipment, this utility model, by being applied in this device by lithium battery, chip etc. that operating frequency is higher, solves the problem that in the test of steering wheel field operation, test equipment is more greatly, heavier and testing cost is higher.
For this, the technical scheme that this utility model provides is:
A kind of portable digital steering wheel test equipment, including:
Housing;
Steering wheel communication interface, it is arranged on described housing upper face plate, and described steering wheel communication interface is connected with steering wheel by the communications cable; With
Battery, it is arranged in described housing, tests equipment for steering wheel and powers, and is provided with the power interface being connected with described battery on described housing, and described power interface is connected with steering wheel by wire.
Preferably, in described portable digital steering wheel test equipment, described battery is lithium battery, and the voltage of described battery output is 28V.
Preferably, described portable digital steering wheel test equipment, also include:
DC source power supply interface, it is arranged on the side of described housing upper face plate, and described DC source power supply interface and DC source are connected as steering wheel test equipment and power, and described DC source power supply interface is connected with described power interface;
Battery charging inlet, it is also disposed on the side of described housing upper face plate, and described battery charging inlet electrically connects with described battery;
Dc switch, is also disposed on the side of described housing upper face plate, and is connected with described DC source power supply interface, for controlling the break-make of described DC source; With
Cell switch, is also disposed on the side of described housing upper face plate, and is connected with described battery, open and close described battery.
Even more preferably, described portable digital steering wheel test equipment, also include:
Matrix keyboard, it is arranged on the top panel of described housing; With
Control circuit, it is arranged in described housing, and described control circuit is each connected respectively with described steering wheel communication interface, described battery, described DC source power supply interface and described matrix keyboard.
It is further preferred that described portable digital steering wheel test equipment, also include:
Display, it is arranged on the top panel of described housing, and is electrically connected to described control circuit; With
Serial communication interface, it is arranged on described housing upper face plate, and is positioned at the top of described display, and is connected with described control circuit, and described serial communication interface is connected with computer by data wire.
It is further preferred that described portable digital steering wheel test equipment, also include:
Malfunction indicator lamp, it is arranged on described housing upper face plate, and described malfunction indicator lamp is arranged with described steering wheel communication interface one_to_one corresponding, and described malfunction indicator lamp electrically connects with described control circuit, and instruction steering wheel and steering wheel test the break-make of equipment;
It is further preferred that in described portable digital steering wheel test equipment, the main control chip of described control circuit is chip STM32F103RCT6.
It is further preferred that in described portable digital steering wheel test equipment, described control circuit is provided with linear test circuit and common test circuit, and described linear test circuit and described common test circuit are all connected with described space communication interface;
And described matrix keyboard is additionally provided with the button switching described linear test circuit and common test circuit with described space communication interface break-make respectively, press described button and realize described linear test circuit and described space communication orifice more than 1S and a kind of pattern that described common test circuit and described space communication interface disconnect and described common test circuit and described space communication orifice and switching between another kind of pattern that described linear test circuit and described space communication interface disconnect.
It is further preferred that in described portable digital steering wheel test equipment, described steering wheel communication interface is provided with four;
Wherein, press described button to be shorter than 1s and realize the connection of a steering wheel communication interface and described control circuit and four steering wheel communication interfaces are equal and switching between the connection two states of described control circuit.
Preferably, described portable digital steering wheel test equipment, also include:
Cable storage tank, it offers an opening, is arranged on the side of described housing, places cable;
Cover plate, it removably closes the opening of described cable storage tank.
This utility model at least includes following beneficial effect:
This device reduces device fabrication cost in the apparatus by integrated dexterously for power supply, and due to battery small volume, it is simple to carry, it is possible to field operation operation.
Lithium battery has that capacity height, amplified current be big, the feature of working stability.
During in order to ensure that battery electric quantity is low, system can be properly functioning, and this device is additionally provided with DC source power supply interface and dc switch.
STM32F103RCT6 control chip selected in this utility model runs COREX-M3 kernel, and operating frequency can reach 72MHZ, it is possible to the data of data acquisition and general-purpose algorithm process easily; And lithium battery has, and capacity height, amplified current be big, the feature of working stability so that compact of the present utility model, it is simple to carry, and power to self and steering gear control system.
Part is embodied by further advantage of the present utility model, target and feature by description below, and part also will by being understood by those skilled in the art research of the present utility model and practice.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
Should be appreciated that used herein such as " have ", existence or the interpolation of other elements one or more or its combination do not allotted in " comprising " and " including " term.
As illustrated in fig. 1 and 2, this utility model provides a kind of portable digital steering wheel test equipment, including:
Housing;
Steering wheel communication interface 2, it is arranged on described housing upper face plate, and described steering wheel communication interface 2 is connected with steering wheel by the communications cable; With
Battery, it is arranged in described housing, tests equipment for steering wheel and powers, and is provided with the power interface 1 being connected with described battery on described housing, and described power interface 1 is connected with steering wheel by wire.
This device reduces device fabrication cost in the apparatus by integrated dexterously for power supply, and due to battery small volume, it is simple to carry, it is possible to field operation operation.
In one of them embodiment of the present utility model, as preferably, described battery is lithium battery, and the voltage of described battery output is 28V, can be saved lithium battery series connection by 7 and produce the voltage output of 28V. Lithium battery has that capacity height, amplified current be big, the feature of working stability.
In one of them embodiment of the present utility model, as preferably, during in order to ensure that battery electric quantity is low, system can be properly functioning, also includes:
DC source power supply interface 9, it is arranged on the side of described housing upper face plate, and described DC source power supply interface and DC source are connected as steering wheel test equipment and power, and described DC source power supply interface is connected with described power interface;
Battery charging inlet 8, it is also disposed on the side of described housing upper face plate, and described battery charging inlet 8 electrically connects with described battery;
Dc switch 10, is also disposed on the side of described housing upper face plate, and is connected with described DC source power supply interface 9, for controlling the break-make of described DC source; With
Cell switch 7, is also disposed on the side of described housing upper face plate, and is connected with described battery, open and close described battery. Battery passes through power interface 1 supplying power for outside, controls charge and discharge process by battery charging inlet 8 and cell switch 7. When dead battery, optional DC source power supply interface 9
In such scheme, as preferably, also including:
Matrix keyboard 6, it is arranged on the top panel of described housing; With
Control circuit, it is arranged in described housing, and described control circuit is each connected respectively with described steering wheel communication interface 2, described battery, described DC source power supply interface 9 and described matrix keyboard 6.
In such scheme, as preferably, also including:
Display 5, it is arranged on the top panel of described housing, and is positioned at the top of described matrix keyboard 6, and is electrically connected to described control circuit; With
Serial communication interface 11, it is arranged on described housing upper face plate, and is connected with described control circuit, and described serial communication interface 11 is connected with computer by data wire. In one embodiment, serial communication interface 11 is directly connected on the USART1 of the master controller of control circuit, it is possible to achieve with the communication of computer, the extension testing functions of the equipments for this provides conveniently.
In one of them embodiment of the present utility model, as preferably, also including:
Malfunction indicator lamp 3, it is arranged on described housing upper face plate, and described malfunction indicator lamp 3 is arranged with described steering wheel communication interface 2 one_to_one corresponding, and described malfunction indicator lamp 3 electrically connects with described control circuit, and instruction steering wheel and steering wheel test the break-make of equipment. Malfunction indicator lamp 3 is made up of four light emitting diodes, is directly connected on the LED interface of control circuit, is used for the display to four channel failures and alarm.
In one of them embodiment of the present utility model, as preferably, the main control chip of described control circuit is chip STM32F103RCT6.
In one of them embodiment of the present utility model, as preferably, described control circuit is provided with linear test circuit and common test circuit, and described linear test circuit and described common test circuit are all connected with described space communication interface 2;
And described matrix keyboard 6 is additionally provided with the button switching described linear test circuit and common test circuit with described space communication interface 2 break-make respectively, press described button and realize described linear test circuit and described space communication orifice more than 1S and a kind of pattern that described common test circuit and described space communication interface disconnect and described common test circuit and described space communication orifice and switching between another kind of pattern that described linear test circuit and described space communication interface disconnect.
In one of them embodiment of the present utility model, as preferably, described steering wheel communication interface 2 is provided with four;
Wherein, press described button to be shorter than 1s and realize the connection of a steering wheel communication interface 2 and described control circuit and four steering wheel communication interfaces are equal and switching between the connection two states of described control circuit.
In one of them embodiment of the present utility model, for the ease of carrying, as preferably, also including:
Cable storage tank 4, it offers an opening, is arranged on the side of described housing, can be placed in by connecting line when equipment does not use;
Cover plate, it removably closes the opening of described cable storage tank. This cover plate is that rigidity can be plug-type, thereunder utilizes one block of high intensity Magnet to carry out adhesive.
In one of them embodiment of the present utility model, this portable digital steering wheel test equipment, it is made up of cable storage tank 4, display unit 5, matrix keyboard 6, control circuit, battery and malfunction indicator lamp 3.
Battery is saved lithium battery series connection by seven and produces the voltage output of 28V. Battery passes through power interface 1 supplying power for outside, controls charge and discharge process by battery charging inlet 8 and cell switch 7.
Display 5 adopts liquid crystal 1602 to complete, and this liquid crystal is directly connected in the LCD interface of control circuit. Common testing process shows actual output angle and the control deviation of each passage, linearity test process shows the linearity of each passage.
Matrix keyboard 6 is 16 keys of 4x4, it is directly connected on the matrix keyboard interface of control circuit, the output angle that can control four steering wheel TCH test channels increases simultaneously, reduce and back to zero or the independent increase of each passage output, minimizing and back to zero, it is also possible to controlled the test of the steering wheel linearity.
The main control chip of control circuit is STM32F103RCT6, utilizes its intervalometer to produce four road PWM outputs, utilizes the pulse width of the input capture functional measurement PWM of intervalometer three. Transistor-Transistor Logic level and the conversion of RS-422 differential level is realized by MAX3096 and MAX3033. The electricity utilizing its analog-digital converter monitoring battery prevents battery from crossing and puts damage.
Malfunction indicator lamp 3 is made up of four light emitting diodes, is directly connected on the LED interface of control circuit, is used for the display to four channel failures and alarm. Reserve serial communication interface 11 in a test device, be directly connected on the USART1 of master controller of control circuit, it is possible to achieve with the communication of computer, the extension testing functions of the equipments for this has provided conveniently. Simultaneously in order to when ensureing that battery electric quantity is low system properly functioning can devise DC source power supply interface 9 and dc switch 10.
For the ease of carrying, devise a cable storage tank 4 placing wire on the right side of this convenient test equipment, connecting line can be placed in cable storage tank 4 when equipment does not use. The cover plate of this cable storage tank 4 is that rigidity can be plug-type, thereunder utilizes one block of high intensity Magnet to carry out adhesive.
During test, by be test for steering gear control system be wired to this portable steering wheel test equipment steering wheel communication interface, by be test for steering gear control system by power line be connected to this portable steering wheel test equipment power interface, open cell switch and just can start steering wheel is tested. " 0 " key on matrix keyboard 6 is mode setting button, clicks the switching realizing single channel and four-way, and long " 0 " the key 1s that presses realizes the switching of linearity test and common test.
Under common test pattern:
When passing through " 0 " key and selecting four-way, click four the passage outputs of " 1 " key increases simultaneously, and when clicking " 2 " key, four passage outputs reduce simultaneously, clicks four passage output back to zeros simultaneously of " 3 " button.
When passing through " 0 " key and selecting single channel, clicking the output of " 4 " push-to road one increases, and clicks the output of " 8 " passage one and reduces, clicks " C " push-to road one and export back to zero; Click the output of " 5 " push-to road two to increase, click the output of " 9 " passage two and reduce, click " D " push-to road two and export back to zero; Click the output of " 6 " push-to road three to increase, click the output of " A " passage three and reduce, click " E " push-to road three and export back to zero; Click the output of " 7 " push-to road four to increase, click the output of " B " passage four and reduce, click " F " push-to road four and export back to zero.
Under linearity test pattern:
This portable steering wheel test equipment is automatically performed the linearity test of four passages and in the test result of the liquid crystal display screen display linearity.
Module number described herein and treatment scale are used to simplify explanation of the present utility model. The application of battery of the present utility model, space communication interface and control circuit etc., modifications and variations be will be readily apparent to persons skilled in the art.
As it has been described above, according to this utility model, owing to this device is made up of liquid crystal display, matrix keyboard, control circuit and battery. This equipment can export the pwm signal of four road RS-422 differential level simultaneously, and the dutycycle of this pwm signal and cycle can be configured by matrix keyboard; This equipment can gather the pwm signal of the RS-422 differential level of four road any periods and dutycycle simultaneously, therefore can test the digital rudder controller with four road pwm control signals and PWM feedback signal simultaneously. Matrix keyboard controls the output pwm signal deflection set-point as tested steering wheel, the pwm signal collected is as the tilt value of steering wheel reality, the control deviation of steering wheel be can calculate according to set-point and actual value, and real-time in LCDs definite value and deviation value are shown to. This equipment can measure the linearity of four road steering wheels according to the input/output relation of steering wheel simultaneously simultaneously. This equipment volume lithium battery that is little, lightweight and that carry can be powered for equipment itself and tested steering gear control system, it is simple to carries the steering wheel test in field trial.
Although embodiment of the present utility model is disclosed as above, but listed utilization that it is not restricted in description and embodiment, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, it is easily achieved other amendment, therefore, under the general concept limited without departing substantially from claim and equivalency range, this utility model is not limited to specific details and shown here as the legend with description.