WO2018082283A1 - Cpld control circuit and host computer monitoring system containing the circuit - Google Patents

Abstract

Provided are a CPLD control circuit and a host monitoring system containing the circuit, relating to the host operation state monitoring field. The CPLD control circuit comprises a CPLD controller, a USB module, a JTAG interface, a TTL module, an LED display module. The output end of the USB module is connected to the input end of the TTL module; the input end of the CPLD controller is separately connected to the output end of the TTL module and the output end of the JTAG interface; the output end of the CPLD controller is connected to the input end of the LED display module. The beneficial effects are that: the current operation state is displayed by mean of the on and off of an LED indicator rather than by a traditional monitor, so that the cost is greatly reduced. The LED indicator has simple circuit, low power consumption, and small size, and is easy to maintain without externally and separately installing.

Description

 Technical field

 [0001] The present invention relates to monitoring of host operating conditions, and more particularly to a CPLD control circuit, and to a host monitoring system including the same.

 Background technique

 [0002] In the prior art, in the actual monitoring of the running status of the host, etc., the monitor is generally configured to perform the monitoring, but due to the small space in the civil aviation cabin, the existing monitor cannot realize the narrow space monitoring and the power consumption. High, high heat, not energy-saving and environmentally friendly; In addition, the monitor needs to be installed separately, the circuit of the monitor itself is complicated, and the maintenance is inconvenient in the later stage.

 technical problem

 [0003] Type a paragraph describing the technical problem here.

 Problem solution

 Technical solution

 [0004] In order to solve the problems in the prior art, the present invention provides a CPLD control circuit, and also provides a host monitoring system including the circuit, and the display of the LED display module in the CPLD control circuit indicates the operation of the host computer and the like. status.

 The CPLD control circuit of the present invention includes a CPLD controller, a USB module, a JTAG interface, a TTL module, and an L ED display module, wherein the output of the USB module is connected to the input end of the TTL module, and the input ends of the CPLD controller are respectively Connected to the output of the TTL module and the output of the JTAG interface, the output of the CPLD controller is connected to the input of the LED display module.

 Further improved by the present invention, further comprising a cuckoo clock module, the output of the cuckoo clock module being coupled to the input of the CPLD controller.

 The present invention is further improved, the power supply of the CPLD control circuit is provided by a USB module, and the US

The B module includes a USB interface and a voltage regulator.

The present invention is further improved. The USB module includes a USB interface J1, a voltage regulator chip U2, and the voltage regulator chip U2 Vin pin is connected to a power pin of the USB interface J1, and the voltage regulator chip U2 Vin is cited. Feet and Vout The two ends of the bow I are respectively connected with a polar capacitor and one or more capacitors, and the power supply 5V of the USB interface J1 is converted into a 3.3V working voltage by the voltage regulator chip U2.

According to the present invention, the LED display module includes at least one display unit, and the display unit is connected to an I/O port of the CPLD controller.

[0010] The present invention is further improved. The display unit includes two or more LED indicators, each LED indicator has three states of light, off, and blinking, and the LED indicator is a dual chip capable of displaying two colors. L

ED light.

 The present invention is further improved. The LED display module includes two or more display units, one of which has a bidirectional optional pin, which can be used as a power indicator or an I/O control indicator, and other display units are I/O control indicator.

 [0012] The present invention is further improved, the display unit includes an LED indicator group D1, a transistor Q1, a transistor Q2, a resistor R5, and a resistor R6, and the LED indicator group D1 includes a light emitting diode 0 and a light emitting diode G, The anode of the LED 0 is connected to the power source through the resistor R5, the cathode of the LED 0 is grounded through the transistor Q1, the anode of the LED G is connected to the power source through the resistor R6, and the cathode of the LED G is grounded through the transistor Q2. The bases of transistor Q1 and transistor Q2 are connected to the two I/O pins of the CPLD controller.

 The present invention is further improved. The transistor Q2 is replaced by a resistor R21, the resistor R21 is connected to the cathode of the LED G, and the other end of the resistor R21 is grounded. In the circuit of the display unit with the bidirectional optional pin, when the resistor R21 is selected, the transistor Q2 is removed, the display unit is the power indicator; when the transistor Q2 is selected, the resistor R21 is removed, and the display unit is I /O port control indicator.

 [0014] The present invention also provides a host monitoring system including the circuit, further comprising a computer, wherein the computer is provided with an interface, and the computer is connected to the USB interface and the JTAG interface of the CPLD control circuit through the interface.

Advantageous effects of the invention

 Beneficial effect

[0015] Compared with the prior art, the beneficial effects of the present invention are: using the LED indicator light to turn on and off to display the current working state, replacing the traditional monitor, so that the cost is greatly reduced; the LED indicator circuit is simple, Low power consumption, small size, no need for external installation, easy maintenance. Brief description of the drawing

 DRAWINGS

 1 is a schematic structural diagram of a CPLD control circuit;

2 is a circuit diagram of a CPLD control circuit;

3 to 11 are partial enlarged views of FIG. 2.

 BEST MODE FOR CARRYING OUT THE INVENTION

 BEST MODE FOR CARRYING OUT THE INVENTION

[0019] The paragraphs describing the best mode of the invention are entered here.

Embodiments of the invention

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

 [0021] As shown in FIG. 1, the CPLD control circuit of the present invention includes a CPLD controller, a USB module, a JTAG interface, a TTL (Transister-Transister-Logic) module, an LED display module, and a clock module. The output end of the USB module is connected to the input end of the TTL module, and the input end of the CPLD controller is respectively connected to the output end of the TTL module, the output end of the JTAG interface, and the output end of the cuckoo clock module, and the output end of the CPLD controller and the LED The display module inputs are connected. Among them, CPLD is the abbreviation of English C omplex Programmable Logic Device, Chinese meaning complex programmable logic device.

 [0022] The present invention receives a code from a USB port of a host computer through a USB module, and converts the digital logic level signal that can be normally recognized by the CP LD through the TTL module, and after receiving the logic level signal from the TTL module, the CPLD processor receives the logic level signal from the TTL module. After being compiled and processed, the LED indicator of the LED display module is turned on or off, thereby indicating the working state of the host computer.

[0023] As shown in FIG. 2, FIG. 7, FIG. 10 and FIG. 11, the CPLD controller of this example adopts a programmable logic controller CPLD device EPM240T100C5N produced by ALTERA, and the integrated chip U1 of the CPLD controller is a whole. In order to make the circuit diagram convenient and clear, this example is divided into four parts according to the function. Among them, U1B and U1D are I/O control port parts, which are used for LED display module, TTL module and cuckoo clock module. The connection and the display control of the LED display module are implemented, wherein the 吋 clock module uses the output pin of the 吋 clock chip U3 to be connected to the two I/O pins of the U1D. U1A is the power supply and grounding part, U1C It is a JTAG port pin, connected to JTAG interface J2, used for online programming, and connected to the computer through JTAG interface J2 to update the control program that needs to be implemented. The internal logic control command of the CPLD controller can be updated as needed to achieve the required purpose.

As shown in FIG. 2 and FIG. 8, the power supply of the CPLD control circuit of the present example is provided by a USB module, and the USB module integrates the entire circuit power supply and the data communication transmission with the computer. Including the USB interface and the voltage regulator, specifically, the USB module includes a USB interface J1, a voltage regulator chip U2, the voltage regulator chip U2 Vin bow I pin is connected with the power supply pin I of the USB interface J1, the voltage regulator The chip U2 Vin bow|foot and Vout bow|the two ends of the foot are respectively connected with a polar capacitor and one or more capacitors, and the power supply 5V of the USB interface J1 is converted into a 3.3V working voltage by the voltage regulator chip U2. Specifically, the USB module includes a USB interface J1, a voltage regulator chip U2, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a capacitor C12, a capacitor C13, a capacitor C14, and a capacitor C15. The polarity capacitor C9 and the polarity capacitor C10, the voltage regulator chip U2 Vin pin is respectively connected with the power pin of the USB interface J1, the polarity capacitor C9 positive electrode and the capacitor C14 end, the voltage regulator chip U2

 The Vout pin is respectively connected to one end of the polar capacitor C10 positive, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, the capacitor C12, the capacitor C13, and the capacitor C15. The capacitor C2 and the capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C12, capacitor C13, capacitor C14, the other end of capacitor C15, the polarity capacitor C9 and the negative terminal of the polarity capacitor C10 and the GND of the regulator The pin is grounded. Of course, the number of polar capacitors and capacitors in this example can be set according to the actual situation.

 [0025] wherein, in the example, the two output pins 2 and 1 of the USB interface J1 are connected to the input of the TTL module.

 As shown in FIG. 2 and FIG. 9, the TTL module of this example adopts a highly integrated interface converter PL2302HXD_SS OP28, which is bidirectionally converted, which facilitates two-way communication between the host and the CPLD controller.

 [0027] As shown in FIG. 2 and FIG. 12, the LED display module of this example includes five display units, and the display unit is connected to the I/O port of the CPL D controller. Of course, the number of display units can be set according to the number of I/O ports of the CPLD controller.

[0028] The display unit of this example includes two LED indicators, each of which has three states of light, off, and blinking, and the LED indicator is a two-chip LED lamp capable of displaying two colors. This example is green/orange two-color L ED lamp, this LED display module is composed of 10 LED indicators. At present, it can be combined into a total of 10 groups of different display states. It can be increased by 1 3 for each additional LED indicator.

Group status, EPM240T100C5N a total of 80 I / O ports, up to 80 ³ groups of different display states as needed.

 [0029] The LED display module of this example includes a display unit with bidirectional optional pins, which can be used as a power indicator

 (The power-on light is on, the power-off light is off) or the I/O control indicator, and the other four display units are I/O control indicators.

[0030] The display unit of this example includes two LED indicators and two triodes connected to the LED indicators. The following description is made by taking a display unit with bidirectional optional pins as an example.

 [0031] The display unit of the example includes an LED indicator group D1, a transistor Q1, a transistor Q2, a resistor R5, and a resistor R6. The LED indicator group D1 includes a light-emitting diode 0 and a light-emitting diode G, and the anode of the LED 0 passes through The resistor R5 is connected to the power source, the cathode of the LED 0 is grounded through the transistor Q1, the anode of the LED G is connected to the power source through the resistor R6, the cathode of the LED G is grounded through the transistor Q2, and the transistor Q1 and the transistor Q2 are The base is connected to the two I/O pins of the CPLD controller. Other display units are connected in the same way.

 [0032] In this example, the transistor Q2 in the display unit with the bidirectional optional pin can be replaced by a resistor R21, and the cathode of the LED G is respectively connected to the collector of the transistor Q2 and one end of the resistor R21, and the resistor R2 1 The other end is grounded. When the resistor R21 is selected, the transistor Q2 is removed, the display unit is a power indicator; when the transistor Q2 is selected, the resistor R21 is removed, and the base of the transistor Q2 is connected to the I/O pin of the CPLD controller, then the display unit For the I/O control indicator, the digital logic command controls the LED indicator to work. When the transistor B is extremely high, the transistor C and E are turned on, the current flows through the LED, and passes through the transistor C. , E pole flows to the earth, forming a loop, the LED indicator is illuminated, and the light is off.

 [0033] The LED indicator group of the LED display module D1 position 0 light, D2 ~ D5 position G light and 0 light, are I / O control indicators, by the digital logic command to control the indicator light working state, when the transistor B Extremely high 吋, the transistor C, E pole is turned on, the current flows through the LED indicator, through the transistor C, E pole flows to the earth, forming a loop, the 吋 LED indicator is lit, otherwise the light is off .

[0034] The present invention also provides a host monitoring system including the circuit, including a computer, and the computer is provided with a connection And the computer is connected to the USB interface and the JTAG interface of the CPLD control circuit through the interface.

[0035] Specifically, the computer device is not connected to the JTAG interface of the CPLD, and is required to connect the JTAG interface of the computer and the CPLD control circuit through a connector for compiling or updating the control program inside the CPLD controller. The CPLD control circuit is connected to the USB interface of the computer through the USB interface in the USB module.

, for power supply and communication with the computer. The computer can be a monitor, a server, or the like.

[0036] The present invention is based on the normal operation of a computer system, and issues a current work content corresponding code from a USB communication interface within a prescribed time range.

 [0037] As an embodiment of the present invention, this example is used for the actual monitoring of the working state of the server of the civil aviation cabin entertainment system. The working principle of this example is:

 [0038] The LED display module prefabricates two automatic display states: the first type, the down state (power-on state, the longest duration is 300 seconds), the second type, the code transmission interval exceeds the automatic error state (continuous 30 seconds did not receive the current working status code from the computer).

 [0039] The LED display module is powered on and automatically displays the pre-made "down state" (the first pre-made state). When the computer is down, the current real state is sent to the CPLD controller, and the CPLD controller is updated. The current display status shows the actual working status of the computer (eg: power status, system update, data update, network status, system workgroup status, system exception, etc.).

 [0040] In normal operation, the computer USB interface sends the current state to the CPLD controller every 5 seconds, and immediately sends the current state after switching the working state or a work task is completed, and the CPLD controller receives the current status code and decodes the data. Then, the LED display module is instructed to indicate that when the CPLD controller does not receive the status code from the computer system for 30 seconds, the CPLD controller automatically displays the fault code (second pre-made status), when the fault code has been displayed, CPLD control The controller receives a new status code and the CPLD controller immediately decodes the drive LED indicator by the new status code.

 [0041] As one of the embodiments, the state monitoring of the civil aviation cabin host monitoring system of this example can be defined as follows:

 [0042] In this example, the LED display module LED indicator light color definition: The LED indicator light uses a single dual chip, that is: 1 LED indicator light can emit green and orange light, the two colors can be independently illuminated, or the same Luminous, do not affect each other.

[0043] G light emits green light, indicating that the device is operating normally; 0 light emits orange light, indicating that the device is operating abnormally; G light/0 The lights flash individually or simultaneously or alternately to indicate that the device is performing some special command.

[0044] The internal logic control instruction of the CPLD controller of the present invention:

 [0045] The power-on startup state automatically displays the command: D1 position G light is on, D2~D5 position G light flashes for 300 seconds;

 [0046] The receiving command interval exceeds the automatic display of the fault command: D1 position G light is on, D2~D4 position 0 light is on, D

5 position lights are off.

 [0047] LED indicator digit identification division: Each independent LED indicator group is composed of 2 LED indicators, 5 green/orange bi-color LED lights, in fact, 10 independent LED indicators, set each A valid number represents the status of an LED, ie: Each code consists of 10 significant digits, and 10 digits are arranged in the order of the LEDs.

 [0048] LED indicator working status code: When the code is 0吋, it means “off”; when the code is 1吋, it means “bright”; when the code is 2吋, it means “blinking”, flashing between turns, bright for 0.5 seconds , off 0.5 seconds, one cycle totals 1 second

[0049] After the system is powered on, the code is automatically displayed: 1020202020, for 5 minutes, the status within 5 minutes can be updated later. When no code is received for more than 5 minutes, the fault code is automatically displayed: 1001010100.

 [0050] The system status change immediately sends out the status code immediately. If the system status does not change, the current status code is sent every 15 seconds. When the CPLD controller does not receive the code for 30 seconds, the fault code is automatically displayed: 1001010100.

 [0051] All the system modules work normally, and the LED indicator module lights up: Each LED indicator group is fully lit, the orange light is off, and the automatic display code: 1010101010.

[0052] The present invention uses the LED indicator light to turn on and off to display the current working state, replacing the traditional monitor, which greatly reduces the cost; the LED indicator circuit is simple, the power consumption is low, the volume is small, and no external installation is required.

Easy to maintain.

 [0053] And the number of LED indicators can be expanded according to the number of I/O interfaces of the CPLD controller, which can indicate the working status of hundreds of hosts, and realize the actual monitoring of the working state of the host.

The embodiments described above are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. The scope of the present invention is not limited to the specific embodiments. The effect changes are within the scope of protection of the present invention. Industrial applicability

 [0055] Enter the paragraph of industrial applicability description here.

 Sequence table free content

[0056] Type a sequence table free content description paragraph here.

Claims

Claim A CPLD control circuit, comprising: a CPLD controller, a USB module, a JT AG interface, a TTL module, and an LED display module, wherein the output of the USB module is connected to an input end of a T TL module, and the CPLD controller The input end is respectively connected to the TTL module output end and the JTAG interface output end, and the CPLD controller output end is connected to the LED display module input end. The CPLD control circuit according to claim 1, further comprising: a cuckoo clock module, wherein an output end of the cuckoo clock module is connected to the input end of the CPLD controller. The CPLD control circuit according to claim 1 or 2, wherein: the power of the CPLD control circuit is provided by a USB module, and the USB module comprises a USB interface and a voltage regulator. The CPLD control circuit according to claim 3, wherein: the USB module comprises a USB interface J1, a voltage regulator chip U2, and the voltage regulator chip U2 Vin pin is connected to a power pin of the USB interface J1, The voltage regulator chip U2 Vin pin and the Vout pin are respectively connected with a polar capacitor and one or more capacitors in parallel, and the power supply 5V of the USB interface J1 is converted into a 3.3V working voltage by the voltage regulator chip U 2 . The CPLD control circuit according to claim 1 or 2, wherein the LED display module comprises at least one display unit, and the display unit is connected to an I/O port of the CPLD controller. The CPLD control circuit according to claim 5, wherein: the display unit comprises two or more LED indicators, each LED indicator has three states of light, off and blinking, and the LED indicator is capable of displaying Two-color two-chip LED lights. The CPLD control circuit according to claim 6, wherein: the LED display module comprises two or more display units, and one of the display units is provided with a bidirectional optional pin, which can be used as a power indicator or an I/O control indicator. Lights, other display units are I/O control indicators. The CPLD control circuit according to claim 7, wherein: the display unit comprises an LED indicator group D1, a transistor Q1, a transistor Q2, a resistor R5, and a resistor R6, and the LED indicator group D1 includes a light-emitting diode 0 and Light emitting diode G, the light emitting diode The anode of the light-emitting diode 0 is connected to the power source through the resistor R5, the anode of the light-emitting diode G is connected to the power source through the resistor R6, and the cathode of the light-emitting diode G is grounded through the transistor Q2. The transistor Q1 is connected. The base of the transistor Q2 is connected to the two I/O pins of the CPLD controller.  [Claim 9] The CPLD control circuit according to claim 8, wherein: in the display unit provided with the bidirectional optional pin, the transistor Q2 can be replaced by a resistor R21, and the resistor R21 has one end and the The negative electrode of the light emitting diode G is connected, and the other end of the resistor R21 is grounded.  [Claim 10] A host monitoring system including a CPLD control circuit according to any one of claims 1-9, further comprising: a computer, wherein the computer is provided with an interface, and the computer passes through the interface Connected to the USB interface and JTAG interface of the CPLD control circuit.