CN217821304U - CPU taking, placing and heat dissipation controller for mainboard test - Google Patents
CPU taking, placing and heat dissipation controller for mainboard test Download PDFInfo
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- CN217821304U CN217821304U CN202220986503.0U CN202220986503U CN217821304U CN 217821304 U CN217821304 U CN 217821304U CN 202220986503 U CN202220986503 U CN 202220986503U CN 217821304 U CN217821304 U CN 217821304U
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Abstract
The utility model belongs to automatic tool field discloses a CPU of mainboard test is got and is put and heat dissipation controller, including core control module, peripheral function control module and power module, 48 interfaces and IO altogether for the core control module, peripheral function control module accounts for 24 ways IO, peripheral function control module includes temperature sensor module, pressure sensor module, stroke sensor, liquid level sensor, electric jar drive protection module, water-cooling alarm lamp, water pump, fan, touch-sensitive screen, another controller and PLC. This scheme aims at integrated CPU to get puts and the required module of heat dissipation and connect the composite controller, gets for the CPU of mainboard test and puts and the heat dissipation controller facilitates, makes its direct peripheral sensor, water-cooling equipment, PLC, touch-sensitive screen etc. be connected, and stability is high, and the function is comprehensive, and occupation space is little, maintains simple and conveniently, resource make full use of.
Description
Technical Field
The utility model relates to a CPU of mainboard test is got and is put and heat dissipation controller.
Background
In the automatic jig industry, the mainboard test requirement is wide, wherein CPU taking and heat dissipation need to be considered in the test pre-stage of the mainboard to be tested, and if the test requirement of CPU taking and heat dissipation is met, multifunctional peripheral devices such as low-power temperature, stroke, pressure and liquid level sensors, high-power water-cooling water pumps, fans, electric cylinders and water-cooling alarm lamps are involved, and the peripheral devices correspond to respective hardware control modules and are connected.
In the existing technology of taking, placing and radiating the CPU of the mainboard to be tested, the hardware integration consideration is few, the tool occupies a large space, the peripheral wiring is more, the wiring needs to be performed again in each development, the maintenance is inconvenient, and a large amount of manpower and material resources are consumed.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide a CPU of mainboard test is got and is put and heat dissipation controller.
In order to solve the problem, the utility model adopts the following technical proposal.
A CPU pick-up and placement and heat dissipation controller for mainboard test comprises a core control module, a peripheral function control module and a power supply module, wherein the core control module has 48 interfaces and IO, the peripheral function control module occupies 24 IO,
the peripheral function control module comprises a temperature sensor module, a pressure sensor module, a stroke sensor, a liquid level sensor, an electric cylinder driving protection module, a water-cooling alarm lamp, a water pump, a fan, a touch screen, another controller and a PLC;
the temperature control module is a core control module, enables output and clock and data input, occupies 3 paths of IO and converts the temperature analog signal into a digital signal;
the pressure sensor module is a core control module, is used for inputting clock and data, occupies 2 paths of IO and converts pressure analog signals into digital signals;
the stroke sensor is directly connected with an ADC acquisition port of the core control module, occupies 1 path of IO and converts a stroke analog signal into a digital signal;
the liquid level sensor is powered by 24V, and the power is input into the core control module through optical coupling level conversion, and occupies 1 path of IO;
the electric cylinder is powered by 12V, 1 path of IO is taken as output, the MOS switch is controlled to be used for speed regulation and starting and stopping of the electric cylinder push rod, the other 1 path of IO is taken as output, and the optocoupler switch is controlled to output about 10mA current to drive the double-pole double-throw relay coil to complete switching of the rotation direction of the electric cylinder push rod;
the electric cylinder driving protection module acquires the voltage of an electrified path of the electric cylinder through a 0.1 omega resistor;
the water-cooling alarm module lamp is powered by 12V, 1 path of IO is used as output, the on-off of the relay is controlled by the core control module through an optical coupler, and when liquid is not detected on the liquid level or the temperature is higher than a set value, the water-cooling alarm lamp is turned on to report errors;
the water pump and the fan are both supplied with power by 12V and occupy 4 paths of IO, wherein 2 paths of IO are used as output to control the MOS switch to be used for independently regulating the speed of the water pump and the fan, and the other 2 paths of IO are used as input to be used for independently measuring the speed of the water pump and the fan;
the touch screen and the core control module are in UART communication connection, and 2 paths of IO are occupied;
the core control module is in UART communication connection with another controller, and occupies 2 paths of IO;
adopt signal interactive connection between core control module and the PLC, realize level conversion between core control module and the PLC through the opto-coupler, accomplish signal interaction, 2 ways of IO of core control module are as input and 4 ways of IO are as output.
As a further description of the above technical solution: the temperature sensor module adopts a MAX6675 chip, and the pressure sensor module adopts a HX711 chip.
As a further description of the above technical solution: the liquid level sensor is a PNP type liquid level sensor, the optocouplers are TLP291-4 type, and each optocoupler can provide 4-way driving conversion or level conversion.
As a further description of the above technical solution: the system start of the core control module occupies 2 interfaces, the power supply occupies 9 interfaces, the passive crystal oscillator occupies 2 paths, the EEPROM occupies 2 paths of IO, the SWD burning port occupies 3 paths of IO, the USB-to-serial port occupies 2 paths of IO, and the indicator lamp occupies 4 paths of IO.
As a further description of the above technical solution: the external 24V of power module and 12V power, external 24V power provides 24V pull-up for electric jar, liquid level sensor power supply and PLC's opto-coupler end, external 12V power is for water pump, fan and water-cooling alarm lamp power supply, external 12V power is changeed 5V through LM1117-5.0 chip and is given pressure sensor module, touch-sensitive screen power supply and other fortune to put or the comparator power supply.
Compared with the prior art, the utility model has the advantages of:
(1) this scheme aims at integrated CPU to get puts and dispel the heat required module and connection combination composition controller, gets for the CPU of mainboard test and puts and dispel the heat the controller and facilitate, makes it directly be connected with peripheral sensor, water cooling equipment, PLC, touch-sensitive screen etc. stability is high, and the function is comprehensive, and occupation space is little, maintains simple and conveniently, resource make full use of.
(2) The controller of this scheme comprises core control module, temperature, pressure module stroke, level sensor module and connection, opto-coupler and water-cooling water pump, fan, electric jar drive and water-cooling alarm module and connection to and power module, can satisfy mainboard test CPU and get and put and radiating whole demands.
Drawings
FIG. 1 is a functional connection block diagram of a controller according to an embodiment of the present invention;
FIG. 2 is a flow chart of control of controller signals according to an embodiment of the present invention;
FIG. 3 is a diagram of power supply and conversion according to an embodiment of the present invention;
FIG. 4 is a diagram of the modules and connections on the front side of the controller according to the embodiment of the present invention;
fig. 5 is a pin-point diagram of serial port communication between the reverse side of the controller and the touch screen according to the embodiment of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention;
referring to fig. 1, a CPU pick-and-place and heat dissipation controller for motherboard testing includes a core control module, a peripheral function control module and a power module, the core control module has 48 interfaces and IO, the peripheral function control module occupies 24 IO, the system start of the core control module occupies 2 interfaces, the power source occupies 9 interfaces, the passive crystal oscillator occupies 2 channels, the EEPROM occupies 2 IO channels, the SWD burning port occupies 3 IO channels, the USB to serial port occupies 2 IO channels, and the indicator lamp occupies 4 IO channels
Specifically, the peripheral function control module comprises a temperature sensor module, a pressure sensor module, a stroke sensor, a liquid level sensor, an electric cylinder driving protection module, a water-cooling alarm lamp, a water pump, a fan, a touch screen, another controller and a PLC;
the temperature sensor module adopts an MAX6675 chip, enables output and clock and data input for a core control module, occupies 3 paths of IO, converts a temperature analog signal into a digital signal, and completes temperature acquisition;
the pressure sensor module adopts an HX711 chip, considers that a standard HX711 weighing module is simple and small in size, is integrated on a controller, saves space, supplies power for the module at 5V, converts a pressure analog signal into a digital signal, and respectively inputs clock and data of a core control module, and occupies 2 paths of IO;
the travel sensor is directly connected with an ADC acquisition port of the core control module and converts a travel analog signal into a digital signal, and the selected travel sensor is a potentiometer and occupies 1 path of IO;
the liquid level sensor is powered by 24V, a PNP type liquid level sensor is selected, high and low levels are output according to the existence or nonexistence of liquid on the liquid level, so that the state of the liquid level is judged, when the liquid is detected, the liquid level sensor outputs the high level, when the liquid is not detected, the low level is output, 1 path of IO is occupied, and the liquid level is converted and input to the core control module through the optical coupler level to finish liquid level detection;
the electric cylinder is powered by 12V, 1 path of IO is used as output, the MOS switch is controlled to be used for speed regulation and starting and stopping of the electric cylinder push rod, the other 1 path of IO is used as output, and the optocoupler switch is controlled to output about 10mA current to drive the double-pole double-throw relay coil to complete switching of the rotation direction of the electric cylinder push rod;
the electric cylinder driving protection module acquires the voltage of an electric path of the electric cylinder through a 0.1 omega resistor, the voltage after suitable differential amplification is compared with a reference 2.5V by a comparator, and the output is high, the output of speed regulation and start-stop IO of the electric cylinder is reduced, so that the danger of overlarge current of the electric cylinder is protected;
the water-cooling alarm module lamp is powered by 12V, 1 path of IO is used as output, the on-off of the relay is controlled by the core control module through an optical coupler, and when liquid is not detected on the liquid level or the temperature is higher than a set value, the water-cooling alarm lamp is turned on to report errors;
water pump, fan all are the 12V power supply, occupy 4 ways IO, and wherein 2 ways IO are as the output, and control MOS switch is used for water pump and fan independent speed governing separately, and 2 ways IO are as the input in addition for water pump and fan are independent respectively to test the speed, concrete implementation method: if the temperature is lower than 30 ℃ and the PWM is 50 percent, the PWM is 100 percent and is higher than 40 ℃ in the process of increasing from 30 ℃ to 40 ℃, the PWM is kept to be 100 percent, and the method not only meets the function, but also saves energy;
the core control module and the touch screen are connected by 2 paths of IO, and communication is carried out according to the touch screen reading and writing UART protocol;
the communication connection between the controllers occupies 2 paths of IO, and mainly considers that one jig is matched with two controllers, if the two controllers control the same water-cooling speed regulation, functional interference can be generated, and UART communication connection is adopted to avoid the mutual interference of the two controllers, which requires communication;
adopt signal interactive connection between core control module and the PLC, realize level conversion between core control module and the PLC through the opto-coupler, accomplish signal interaction, 2 ways IO of core control module correspond 6 ways of signals respectively as input and 4 ways IO as output, wherein 2 ways input signal names respectively: starting a test signal and ending the test signal; 4. the output signals of the paths are respectively named as: origin-in-place signal, ready signal, pressure-in-place signal, error signal.
In addition, as shown in fig. 1, the optocoupler selects a model TLP291-4, and each optocoupler can provide 4-way drive conversion or level conversion; the combination of a liquid level sensor needs 1 path of IO conversion, positive and negative rotation control of an electric cylinder needs 1 path of IO drive conversion, a water-cooling alarm lamp needs 1 path of IO drive conversion, 6 interactive signals need 6 paths of level conversion, at least 9 paths of level conversion are needed, and then 3 optical couplers are selected to complete conversion.
Referring to fig. 2, the power module adopts external 24V and 12V power supplies, the external 24V supplies power to the electric cylinder and the liquid level sensor and provides 24V pull-up for the optical coupling end of the PLC, the external 12V power supply supplies power to the water pump, the fan and the water-cooling alarm lamp, and on the other hand, the external 12V power supply rotates 5V through the LM1117-5.0 chip to supply power to the pressure sensor module, the touch screen and other operational amplifiers or comparators;
5V is converted into 3.3V through LM1117-3.3 to supply power to the core control module and provide pull-up for an IO port; the 12V of voltage stabilization processing is converted into a reference 5V through an ADR4550 chip, and then power is supplied to the stroke sensor through appropriate resistance voltage division, wherein the purpose of the resistance voltage division is to enable the output voltage of the stroke sensor not to be higher than 3.3V and simultaneously avoid directly supplying the voltage of the stroke sensor to an ADC (analog to digital converter), so that a core control module is protected; the reference 5V is converted into the reference 2.5V, on one hand, the reference voltage is provided for electric cylinder driving protection, and on the other hand, the reference voltage is provided for an STM32 VDDA pin of the core control module.
As shown in fig. 3, the control flow is as follows:
the core control module is initialized, and the actions are as follows: starting temperature detection, returning an electric cylinder push rod to the original point, closing a fan, closing a water pump, closing a water-cooling alarm lamp, and resetting the error state; sending out an origin in-place signal; sending out a ready signal; waiting for a start test signal to come; the push rod of the electric cylinder is pressed down and pressed in place; starting a water pump and a fan to regulate speed and measure speed; starting liquid level detection; sending a pressure in-place signal; waiting for the test signal to end; returning to the original point; the test is finished; waiting for a new round of testing;
if the error or temperature and liquid level alarm is given in the process of the journey; sending out an error signal; overhauling errors; clearing the error; waiting for the next test;
if the start test signal is not coming; then debug mode may be entered; finishing debugging; returning to the original point; sending out an origin in-place signal; a ready signal is issued.
Referring to fig. 4, the modules and connection layout on the front side of the controller of the present invention are framed out, and the connection ports of the peripheral devices are indicated; the pressure sensor module, the temperature sensor module, the stroke sensor and the like shown in the figure are greatly influenced by interference; the system is reasonably arranged, so that the coupling degree of each module is reduced, and the influence of large-current heating and high-speed PWM crosstalk on the modules is avoided; the wiring is short and few, and all modules are distributed relatively independently; in addition, the PLC end power supply connected with the optocoupler is externally connected and is not connected with the 24V power supply on the main control board, PLC interference is avoided, and the independence and the stability of the controller are improved.
Referring to fig. 5, the back side of the controller of the present invention is shown as a serial port communication pin point of a touch screen, which is connected to a 4.3-inch denv screen, and the model selected by the denv screen is DMT48270C43_06W.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the protection scope of the present invention by replacing or changing the technical solution and the modified concept of the present invention within the technical scope of the present invention.
Claims (5)
1. The utility model provides a CPU of mainboard test gets puts and heat dissipation controller which characterized in that: the intelligent power supply comprises a core control module, a peripheral function control module and a power supply module, wherein the core control module has 48 interfaces and IO in total, and the peripheral function control module occupies 24 IO;
the peripheral function control module comprises a temperature sensor module, a pressure sensor module, a stroke sensor, a liquid level sensor, an electric cylinder driving protection module, a water-cooling alarm lamp, a water pump, a fan, a touch screen, another controller and a PLC;
the temperature sensor module is a core control module, enables output and clock and data input, occupies 3 paths of IO, and converts a temperature analog signal into a digital signal;
the pressure sensor module is a core control module, is used for inputting clock and data, occupies 2 paths of IO and converts pressure analog signals into digital signals;
the stroke sensor is directly connected with an ADC acquisition port of the core control module, occupies 1 path of IO and converts a stroke analog signal into a digital signal;
the liquid level sensor is powered by 24V and is input into the core control module through level conversion of the optical coupler, and 1 path of IO is occupied;
the electric cylinder is powered by 12V, 1 path of IO is used as output, the MOS switch is controlled to be used for speed regulation and starting and stopping of the electric cylinder push rod, the other 1 path of IO is used as output, and the optocoupler switch is controlled to output about 10mA current to drive the double-pole double-throw relay coil to complete switching of the rotation direction of the electric cylinder push rod;
the electric cylinder driving protection module acquires the voltage of an electric path of the electric cylinder through a 0.1 omega resistor;
the water-cooling alarm module lamp is powered by 12V, 1 path of IO is used as output, the on-off of the relay is controlled by the core control module through an optical coupler, and when liquid is not detected on the liquid level or the temperature is higher than a set value, the water-cooling alarm lamp is turned on to report errors;
the water pump and the fan are both supplied with power by 12V, 4 paths of IO are occupied, wherein 2 paths of IO are used as output, the MOS switch is controlled to be used for independently regulating the speed of the water pump and the fan respectively, and the other 2 paths of IO are used as input and are used for independently measuring the speed of the water pump and the fan respectively;
the touch screen and the core control module are in UART communication connection, and 2 paths of IO are occupied;
the core control module is in UART communication connection with the other controller, and occupies 2 paths of IO;
adopt signal interactive connection between core control module and the PLC, realize level conversion between core control module and the PLC through the opto-coupler, accomplish signal interaction, 2 way IO of core control module are as input and 4 ways IO are as output.
2. The CPU taking, placing and heat dissipation controller for mainboard testing as claimed in claim 1, wherein: the temperature sensor module adopts a MAX6675 chip, and the pressure sensor module adopts a HX711 chip.
3. The CPU pick-and-place and heat dissipation controller for mainboard testing of claim 1, wherein: the liquid level sensor is a PNP type liquid level sensor, the optocouplers are TLP291-4 types, and each optocoupler can provide 4-way driving conversion or level conversion.
4. The CPU pick-and-place and heat dissipation controller for mainboard testing of claim 1, wherein: the system start of the core control module occupies 2 interfaces, the power supply occupies 9 interfaces, the passive crystal oscillator occupies 2 paths, the EEPROM occupies 2 paths of IO, the SWD burning port occupies 3 paths of IO, the USB-to-serial port occupies 2 paths of IO, and the indicator lamp occupies 4 paths of IO.
5. The CPU pick-and-place and heat dissipation controller for mainboard testing of claim 1, wherein: the external 24V of power module and 12V power, external 24V power provides 24V pull-up for electric jar, liquid level sensor power supply and PLC's opto-coupler end, external 12V power is for water pump, fan and water-cooling alarm lamp power supply, external 12V power is changeed 5V through LM1117-5.0 chip and is given pressure sensor module, touch-sensitive screen power supply and other fortune to put or the comparator power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220986503.0U CN217821304U (en) | 2022-04-27 | 2022-04-27 | CPU taking, placing and heat dissipation controller for mainboard test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220986503.0U CN217821304U (en) | 2022-04-27 | 2022-04-27 | CPU taking, placing and heat dissipation controller for mainboard test |
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| Publication Number | Publication Date |
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| CN217821304U true CN217821304U (en) | 2022-11-15 |
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| CN202220986503.0U Active CN217821304U (en) | 2022-04-27 | 2022-04-27 | CPU taking, placing and heat dissipation controller for mainboard test |
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| CN (1) | CN217821304U (en) |
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- 2022-04-27 CN CN202220986503.0U patent/CN217821304U/en active Active
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