CN220357586U

CN220357586U - Counting IO control card based on PCIE bus expansion

Info

Publication number: CN220357586U
Application number: CN202322002207.XU
Authority: CN
Inventors: 肖毅
Original assignee: Shenzhen Hengyu Control Technology Co ltd
Current assignee: Shenzhen Hengyu Control Technology Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-16
Anticipated expiration: 2033-07-27

Abstract

The utility model relates to the technical field of signal transmission, and discloses a counting IO control card based on PCIE bus expansion, which comprises: PCIE signal adapter plate, counting chip and photoelectric coupler; the PCIE signal adapter plate is connected with the counting chip through a first end and is connected with the photoelectric coupler through a second end; the PCIE signal adapter plate is used for transmitting PCIE signals to the counting chip; the photoelectric coupler is used for converting an external sensor signal into a digital signal and transmitting the digital signal to the counting chip; the counting chip is used for writing an IO port under the condition of receiving the PCIE signal; or under the condition of receiving the digital signal, reading the IO port. And the PCIE signal is transmitted to the counting chip outwards by using the PCIE signal adapter plate, so that the counting chip reads and writes an IO port through the photoelectric coupler.

Description

Counting IO control card based on PCIE bus expansion

Technical Field

The utility model relates to the technical field of signal transmission, in particular to a counting IO control card based on PCIE bus expansion.

Background

The counting IO control card based on PCIE bus expansion is a computer interface card and is used for realizing the input and output of digital signals. It is typically connected to an expansion slot or interface on the computer motherboard by a cable, providing a plurality of digital input and output ports for data interaction with external devices. The counting IO control card based on PCIE bus expansion is widely applied to the fields of industrial automation, instrument and meter control, data acquisition and the like, and can monitor and control switches, sensors, actuators and the like of various peripheral devices.

With the development of industrial technology, more and more sensors are used by equipment, so that the number requirements of digital IO are more and more, the requirements of digital IO are also more and more, and at present, multi-core cables and multi-core plugs are mostly adopted, so that the cost is high and the equipment is easy to break.

The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present utility model and is not intended to represent an admission that the foregoing is prior art.

Disclosure of Invention

The utility model mainly aims to provide a counting IO control card based on PCIE bus expansion, and aims to solve the technical problems of high cost and easiness in damage of a multi-core cable.

In order to achieve the above object, the present utility model provides a counting IO control card based on PCIE bus extension, where the counting IO control card based on PCIE bus extension includes:

PCIE signal adapter plate, counting chip and photoelectric coupler;

the first end of the PCIE signal adapter plate is connected with the first end of the counting chip, and the second end of the counting chip is connected with the photoelectric coupler;

the PCIE signal adapter plate is used for transmitting PCIE signals to the counting chip;

the photoelectric coupler is used for converting an external sensor signal into a digital signal and transmitting the digital signal to the counting chip;

the counting chip is used for writing an IO port under the condition that the PCIE signal is received; or under the condition that the digital signal is received, reading the IO port.

Optionally, the counting IO control card based on PCIE bus extension further includes:

a PCI switching module;

the first end of the PCI switching module is connected with the first end of the PCIE signal switching board, and the second end of the PCI switching module is connected with the first end of the counting chip;

the PCI switching module is used for converting the PCIE signal into a PCI signal and outputting the PCI signal to the counting chip.

Optionally, the PCI switching module includes:

PCI switching chip and signal rectifying circuit;

the first end of the PCI switching chip is connected with the first end of the PCIE signal switching board; the second end of the PCI switching chip is connected with the first end of the signal rectifying circuit, and the second end of the signal rectifying circuit is connected with the first end of the counting chip;

the PCI switching chip is used for receiving the PCIE signal, converting the PCIE signal into a PCI signal and transmitting the PCI signal to the signal rectifying circuit;

the signal rectifying circuit is used for rectifying the level of the received PCI signal and providing the level to the counting chip.

Optionally, the PCI switching module further includes:

a protection circuit;

the first end of the protection circuit is connected with the first end of the PCI switching chip;

and the protection circuit is used for disconnecting the PCIE signal switching board from the PCI switching chip when the voltage value input to the PCI switching chip is larger than a preset voltage.

Optionally, the protection circuit includes:

a TVS diode and a first capacitor;

the first end of the TVS diode is connected with the first end of the PCI transfer chip, and the second end of the TVS diode is connected with the second end of the first capacitor; the first end of the first capacitor is connected with the first end of the PCI transfer chip, and the second end of the first capacitor is grounded.

a voltage conversion circuit;

the first end of the voltage conversion circuit is connected with the counting chip; the second end of the voltage conversion circuit is connected with the photoelectric coupler; the third end of the voltage conversion circuit is connected with the PCIE signal adapter plate;

the voltage conversion circuit is used for converting the voltage provided by the PCIE signal adapter plate into working voltage required by the counting chip and the photoelectric coupler and outputting the working voltage to the counting chip and the photoelectric coupler.

Optionally, the voltage conversion circuit includes:

a linear voltage stabilizing circuit and a voltage dividing circuit;

the first end of the linear voltage stabilizing circuit is connected with the PCIE signal adapter plate, and the second end of the linear voltage stabilizing circuit is connected with the photoelectric coupler; the first end of the voltage dividing circuit is connected with the second end of the linear voltage stabilizing circuit; the second end of the voltage dividing circuit is connected with the counting chip.

The linear voltage stabilizing circuit is used for stabilizing the voltage provided by the PCIE signal adapter plate and outputting the stabilized voltage to the voltage dividing circuit;

the voltage dividing circuit is used for dividing the voltage after voltage stabilization and outputting the divided voltage to the counting chip.

Optionally, the linear voltage stabilizing circuit includes:

a negative feedback control circuit and a voltage regulating circuit;

the first end of the negative feedback control circuit is connected with the first end of the voltage dividing circuit, and the second end of the negative feedback control circuit is connected with the first end of the voltage regulating circuit; the second end of the voltage regulating circuit is connected with the PCIE signal adapter plate;

the negative feedback control circuit is used for processing the voltage at the first end of the voltage dividing circuit into a negative feedback control voltage and outputting the negative feedback control voltage to the voltage regulating circuit;

the voltage regulating circuit is used for utilizing the negative feedback control voltage to change the voltage of the first end of the voltage dividing circuit.

an indication circuit;

the indicating circuit is electrically connected with the photoelectric coupler;

the indicating circuit is used for indicating the operation state of the photoelectric coupler.

Optionally, the PCIE signal adapter plate is electrically connected to the counting chip by using a 9-core shielded cable with a USB3.0 interface.

The PCIE signal adapter plate, the counting chip and the photoelectric coupler are used; the first end of the PCIE signal adapter plate is connected with the first end of the counting chip, and the second end of the counting chip is connected with the photoelectric coupler; the PCIE signal adapter plate is used for transmitting PCIE signals to the counting chip; the photoelectric coupler is used for converting an external sensor signal into a digital signal and transmitting the digital signal to the counting chip; the counting chip is used for writing an IO port under the condition that the PCIE signal is received; or under the condition that the digital signal is received, reading the IO port. And the PCIE signal is transmitted to the counting chip outwards by using the PCIE signal adapter plate, so that the counting chip reads and writes an IO port through the photoelectric coupler.

Drawings

Fig. 1 is a functional block diagram of a first embodiment of a counting IO control card based on PCIE bus extension according to the present utility model;

fig. 2 is a functional block diagram of a second embodiment of a counting IO control card based on PCIE bus extension according to the present utility model;

fig. 3 is a schematic circuit diagram of a voltage conversion circuit in a counting IO control card based on PCIE bus extension.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, fig. 1 is a functional block diagram of a first embodiment of a counting IO control card based on PCIE bus extension according to the present utility model.

As shown in fig. 1, the counting IO control card based on PCIE bus extension in this embodiment includes:

PCIE signal adapter plate, counting chip and photoelectric coupler; the first end of the PCIE signal adapter plate is connected with the first end of the counting chip, and the second end of the counting chip is connected with the photoelectric coupler.

The PCIE signal adapter plate is used for transmitting PCIE signals to the counting chip.

It can be understood that the PCIE signal patch panel may be a device for connecting and switching PCIE interfaces, and may implement switching of different PCIE signals. The PCIE signal patch panel may be inserted into a PCIE slot, and direct PCIE signals to other interfaces through the patch circuit. Thus, the number of PCIE devices can be easily expanded or the layout thereof can be easily changed. Such as PCIE-USB patch panels, PCIE-mSATA patch panels.

it is understood that the optocoupler may be a device that converts an optical signal into an electrical signal. The light-emitting diode is composed of a light-emitting diode and a photosensitive circuit, such as a photodiode, a phototriode, a phototransistor and the like, and when an electric signal is transmitted at an input end, the light coupling is used for realizing electric isolation from an output end. Such as PC817, MOC3021, HCPL-3700 model photo-couplers. The optocoupler may electrically isolate the input circuit from the output circuit so that signals may be transferred between circuits of different voltages, currents or positions.

It should be noted that the counting chip may be an integrated circuit chip for implementing the counting function of the digital signal. It usually comprises a counter and a clock circuit, which can count the input pulses or periodic signals and output the count result. Such as a model 74HC590, CD4026, HEF4520, etc. Specifically, an FPGA chip using an FPGA chip such as EG4X20BGA256 model can be used.

The PCIE signal adapter plate, the counting chip and the photoelectric coupler are used in the embodiment; the first end of the PCIE signal adapter plate is connected with the first end of the counting chip, and the second end of the counting chip is connected with the photoelectric coupler; the PCIE signal adapter plate is used for transmitting PCIE signals to the counting chip; the photoelectric coupler is used for converting an external sensor signal into a digital signal and transmitting the digital signal to the counting chip; the counting chip is used for writing an IO port under the condition that the PCIE signal is received; or under the condition that the digital signal is received, reading the IO port. And the PCIE signal is transmitted to the counting chip outwards by using the PCIE signal adapter plate, so that the counting chip reads and writes an IO port through the photoelectric coupler.

Further, the counting IO control card based on PCIE bus extension further includes: a PCI switching module; the first end of the PCI switching module is connected with the first end of the PCIE signal switching board, and the second end of the PCI switching module is connected with the first end of the counting chip.

It is understood that the PCI switching module may be a module for converting a PCIE bus signal into a PCI bus signal. PCI bus is a common computer bus standard used to connect a motherboard to various external devices. The PCI switch module typically includes one or more PCIE slots and provides appropriate circuitry and interfaces to convert PCIE bus signals to PCI bus signals.

The above manner of the present embodiment is through the use of a PCI switch module; the first end of the PCI switching module is connected with the first end of the PCIE signal switching board, and the second end of the PCI switching module is connected with the first end of the counting chip; the PCI switching module is used for converting the PCIE signal into a PCI signal and outputting the PCI signal to the counting chip. Therefore, the counting IO control card based on PCIE bus expansion can be compatible with a counting chip only supporting PCI bus signals, and can improve compatibility and reduce cost.

Further, the PCI switching module includes: PCI switching chip and signal rectifying circuit; the first end of the PCI switching chip is connected with the first end of the PCIE signal switching board; the second end of the PCI switching chip is connected with the first end of the signal rectifying circuit, and the second end of the signal rectifying circuit is connected with the first end of the counting chip.

The PCI switching chip is used for receiving the PCIE signal, converting the PCIE signal into a PCI signal and transmitting the PCI signal to the signal rectifying circuit.

It will be appreciated that the PCI switch chip may be an integrated circuit chip for interfacing and controlling communications between different types of external devices and hosts in a computer system. It serves as a bridge for interface conversion and signal protocol conversion, enabling devices of different specifications or interface standards to be compatible with computer systems. Specifically, a PCIE to PCI chip of ASM1083 model may be used, which may be driven in Windows to enable old products to use the same drive as new products without re-developing software.

The signal rectifying circuit may be a circuit design for rectifying, and is used for converting an ac component in an input signal into a dc component. It may be possible to change the polarity of the signal waveform or remove the negative half-cycles so that the output signal contains only part of the positive half-cycle or the negative half-cycle. For example, unidirectional rectifying circuits, such as a diode, may be used to rectify the signal. When the input signal is in a positive half period, the diode is conducted, and the output is consistent with the input signal; when the input signal is a negative half cycle, the diode is turned off and the output is zero. So that the output signal contains only part of the positive half cycle. Or a full wave bridge rectifier circuit is used, for example consisting of four diodes and two finger-crossing elements, typically capacitors. In this circuit, a full positive half cycle output signal is obtained, whether the input signal is a positive half cycle or a negative half cycle.

In this embodiment, the PCI switching module includes: PCI switching chip and signal rectifying circuit; the first end of the PCI switching chip is connected with the first end of the PCIE signal switching board; the second end of the PCI switching chip is connected with the first end of the signal rectifying circuit, and the second end of the signal rectifying circuit is connected with the first end of the counting chip; the PCI switching chip is used for receiving the PCIE signal, converting the PCIE signal into a PCI signal and transmitting the PCI signal to the signal rectifying circuit; the signal rectifying circuit is used for rectifying the level of the received PCI signal and providing the level to the counting chip. The signal rectifying circuit rectifies the output signal of the PCI switching module, so that the reliability and the interpretability of the signal can be improved.

Further, the PCI switching module further includes: a protection circuit; the first end of the protection circuit is connected with the first end of the PCI switching chip.

It should be noted that the protection circuit may be a circuit for protecting an electronic device or a circuit from potential damage or malfunction. It can monitor and respond to specific events or anomalies to limit current, voltage or power parameters to safe ranges and prevent them from exceeding the withstand capability of the device or circuit. Protection circuits are typically implemented using various sensors, switches, relays, fuses, protection devices, and the like. Such as an overcurrent protection circuit, an overvoltage protection circuit, an overtemperature protection circuit, or a transient voltage protection circuit.

The present embodiment is achieved by using a protection circuit; the first end of the protection circuit is connected with the first end of the PCI switching chip; and the protection circuit is used for disconnecting the PCIE signal switching board from the PCI switching chip when the voltage value input to the PCI switching chip is larger than a preset voltage. Therefore, when the power supply input current or voltage of the counting IO control card based on PCIE bus expansion exceeds a preset safety threshold, the counting IO control card based on PCIE bus expansion can be protected.

Further, the protection circuit in this embodiment includes: a TVS diode and a first capacitor.

It is understood that the TVS diode may be a protection device for suppressing transient overvoltage. It is commonly used to protect electronic devices from voltage spikes, electromagnetic interference, and electrostatic discharge, among other sudden voltage events that may damage the device.

It will be appreciated that the first capacitor may be a capacitor for circuit filtering as a filter capacitor. It is designed to remove high frequency noise, interference or fluctuations in the power supply or signal, thereby achieving smoothing and stabilization of the signal. Such as an aluminum electrolytic capacitor, a ceramic capacitor, or a nonpolar capacitor.

The present embodiment uses a TVS diode and a first capacitor; the first end of the TVS diode is connected with the first end of the PCI transfer chip, and the second end of the TVS diode is connected with the second end of the first capacitor; the first end of the first capacitor is connected with the first end of the PCI transfer chip, and the second end of the first capacitor is grounded. The counting IO control card based on PCIE bus expansion is protected from voltage spikes, electrostatic discharge and other sudden voltage events which can damage equipment by utilizing a TVS diode and a first capacitor.

Further, based on the above embodiment, a second embodiment of the present utility model is proposed. Referring to fig. 2, fig. 2 is a functional block diagram of a second embodiment of a counting IO control card based on PCIE bus extension according to the present utility model.

In this embodiment, the counting IO control card based on PCIE bus extension further includes: a voltage conversion circuit; the first end of the voltage conversion circuit is connected with the counting chip; the second end of the voltage conversion circuit is connected with the photoelectric coupler; and a third end of the voltage conversion circuit is connected with the PCIE signal adapter plate.

It will be appreciated that the voltage conversion circuit may be an electronic circuit for converting an input voltage to a different output voltage level or type.

In the present embodiment, by using the voltage conversion circuit; the first end of the voltage conversion circuit is connected with the counting chip; the second end of the voltage conversion circuit is connected with the photoelectric coupler; the third end of the voltage conversion circuit is connected with the PCIE signal adapter plate; the voltage conversion circuit is used for converting the voltage provided by the PCIE signal adapter plate into working voltage required by the counting chip and the photoelectric coupler and outputting the working voltage to the counting chip and the photoelectric coupler. The input voltage is converted into voltages required by various parts in the counting IO control card based on PCIE bus expansion by using a voltage conversion circuit.

Further, the voltage conversion circuit includes: a linear voltage stabilizing circuit and a voltage dividing circuit; the first end of the linear voltage stabilizing circuit is connected with the PCIE signal adapter plate, and the second end of the linear voltage stabilizing circuit is connected with the photoelectric coupler; the first end of the voltage dividing circuit is connected with the second end of the linear voltage stabilizing circuit; the second end of the voltage dividing circuit is connected with the counting chip.

The linear voltage stabilizing circuit is used for stabilizing the voltage provided by the PCIE signal adapter plate and outputting the stabilized voltage to the voltage dividing circuit.

It should be noted that the linear voltage stabilizing circuit may be a circuit for stabilizing an output voltage. It is capable of converting an input voltage into a stable output voltage, which is kept relatively stable even when the input voltage fluctuates or the load changes. The working principle of the linear voltage stabilizing circuit is based on negative feedback control, and the influence caused by input voltage fluctuation and load change is eliminated by adjusting the output voltage, so that a stable output voltage is provided. For example, the power output stage may be regulated by a differential amplifier by comparing the difference between the output voltage and a reference voltage to generate a control signal to stabilize the output voltage at a predetermined value.

The voltage dividing circuit may be a circuit for dividing an input voltage into output voltages of different proportions. It achieves a proportional division of the input voltage to the different outputs by using a suitable resistor network.

In the present embodiment, by using a linear voltage stabilizing circuit and a voltage dividing circuit; the first end of the linear voltage stabilizing circuit is connected with the PCIE signal adapter plate, and the second end of the linear voltage stabilizing circuit is connected with the photoelectric coupler; the first end of the voltage dividing circuit is connected with the second end of the linear voltage stabilizing circuit; the second end of the voltage dividing circuit is connected with the counting chip. The linear voltage stabilizing circuit is used for stabilizing the voltage provided by the PCIE signal adapter plate and outputting the stabilized voltage to the voltage dividing circuit; the voltage dividing circuit is used for dividing the voltage after voltage stabilization and outputting the divided voltage to the counting chip. Thus, the input voltage can be stably converted into the set output voltage, and the sensitivity to load variation and input voltage fluctuation is reduced. The voltage divider circuit can divide the input voltage according to a certain proportion to provide the required stable output voltage.

Further, the linear voltage stabilizing circuit includes: a negative feedback control circuit and a voltage regulating circuit; the first end of the negative feedback control circuit is connected with the first end of the voltage dividing circuit, and the second end of the negative feedback control circuit is connected with the first end of the voltage regulating circuit; and the second end of the voltage regulating circuit is connected with the PCIE signal adapter plate.

And the negative feedback control circuit is used for processing the voltage at the first end of the voltage dividing circuit into a negative feedback control voltage and outputting the negative feedback control voltage to the voltage regulating circuit.

It will be appreciated that the negative feedback control circuit may be a circuit that adjusts and stabilizes the performance of the system by feeding back into the system the difference between the system output signal and the desired input signal. The system uses a negative feedback principle to reduce errors of the system and improve stability, precision and response speed of the system. Such as an op-amp feedback circuit, a closed loop amplification circuit.

It will be appreciated that the voltage regulating circuit may be a circuit for stabilizing and regulating the voltage in a circuit or device. And a circuit for maintaining the output voltage within a desired range by controlling the operation state of the circuit and for resisting the influence of the input voltage variation or the load variation on the output voltage.

Specifically, referring to fig. 3, fig. 3 is a schematic circuit diagram of a voltage conversion circuit in a counting IO control card based on PCIE bus extension according to the present utility model.

The above-described manner of this embodiment is achieved by using a negative feedback control circuit and a voltage regulating circuit; the first end of the negative feedback control circuit is connected with the first end of the voltage dividing circuit, and the second end of the negative feedback control circuit is connected with the first end of the voltage regulating circuit; and the second end of the voltage regulating circuit is connected with the PCIE signal adapter plate. And the negative feedback control circuit is used for processing the voltage at the first end of the voltage dividing circuit into a negative feedback control voltage and outputting the negative feedback control voltage to the voltage regulating circuit. The voltage regulating circuit is used for utilizing the negative feedback control voltage to change the voltage of the first end of the voltage dividing circuit. So that the voltage regulating circuit can reliably and accurately provide stable voltage output.

Further, the counting IO control card based on PCIE bus extension further includes: an indication circuit; the indicating circuit is electrically connected with the photoelectric coupler.

It should be noted that the indication circuit may be configured to provide an indication or prompt for a specific state or condition. It generates visual or audible indication signals through appropriate electronics and signal processing to convey relevant information to a user or operator. Specifically, an indicator light circuit, a buzzer circuit, a digital display circuit, or the like may be used.

The above-described manner of the present embodiment is by using an indicating circuit; the indicating circuit is electrically connected with the photoelectric coupler; the indicating circuit is used for indicating the operation state of the photoelectric coupler. The method and the device can provide functions of real-time state feedback, fault diagnosis, user prompt, data display and the like, improve the availability, safety and user experience of counting IO control cards based on PCIE bus expansion, and help users to better understand and operate equipment.

Further, in this embodiment, the PCIE signal adapter plate is electrically connected to the counting chip by using a 9-core shielded cable with a USB3.0 interface.

Through adopting USB3.0 this kind of general, the cable wire and the joint that a large amount are convenient to purchase, maintenance.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims

1. The counting IO control card based on PCIE bus extension is characterized by comprising:

PCIE signal adapter plate, counting chip and photoelectric coupler;

2. The PCIE bus extension based count IO control card of claim 1 wherein the PCIE bus extension based count IO control card further comprises:

a PCI switching module;

3. The PCIE bus extension based count IO control card of claim 2 wherein said PCI transit module comprises:

PCI switching chip and signal rectifying circuit;

4. The PCIE bus extension based count IO control card of claim 3 wherein said PCI transit module further comprises:

a protection circuit;

5. The PCIE bus extension based count IO control card of claim 4 wherein said protection circuit comprises:

a TVS diode and a first capacitor;

6. The PCIE bus extension based count IO control card of claim 1 wherein the PCIE bus extension based count IO control card further comprises:

a voltage conversion circuit;

7. The PCIE bus extension based count IO control card of claim 6 wherein said voltage conversion circuit comprises:

a linear voltage stabilizing circuit and a voltage dividing circuit;

the first end of the linear voltage stabilizing circuit is connected with the PCIE signal adapter plate, and the second end of the linear voltage stabilizing circuit is connected with the photoelectric coupler; the first end of the voltage dividing circuit is connected with the second end of the linear voltage stabilizing circuit; the second end of the voltage dividing circuit is connected with the counting chip;

8. The PCIE bus extension based count IO control card of claim 7 wherein said linear voltage regulator circuit comprises:

a negative feedback control circuit and a voltage regulating circuit;

9. The PCIE bus extension based count IO control card of any one of claims 1 to 8 wherein the PCIE bus extension based count IO control card further comprises:

an indication circuit;

10. The PCIE bus extension based counting IO control card of any one of claims 1 to 8 wherein said PCIE signal adaptor board is electrically connected to said counting chip using a 9-core shielded cable of USB3.0 interface.