Park-level carbon emission data acquisition device

Abstract

The utility model discloses a park-level carbon emission data acquisition device, which belongs to the technical field of industrial park carbon monitoring and comprises a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a gating switch control module, a partial pressure following filtering unit, an A / D (analog / digital) conversion unit and a controller module. Carbon emission data parameters are collected in real time through a carbon content detection instrument, filtering processing and amplitude control are conducted on analog signals input into a measurement system through a signal conditioning circuit and a data collection circuit which are connected in sequence, and therefore it is guaranteed that the analog signals input into a collection chip are more stable; and the gating switch control module comprises a TTL level conversion unit, a coaxial switch switching unit and an analog signal switching unit, and is used for realizing input signal gating and power supply on-off control of the tested equipment, so that the tested equipment can enter a monitoring state safely and quickly, and carbon emission data acquisition is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial park carbon monitoring, and in particular relates to a park-level carbon emission data collection device. Background Art

[0002] Carbon emission monitoring can conduct real-time analysis and evaluation of carbon emissions in the production process within the industrial park, which not only helps to form an accurate carbon emission inventory, but also provides emission data reference for enterprises in the industrial park, helping them to specify emission reduction strategies and improve production processes to achieve low-carbon development.

[0003] For example, the carbon accounting method for industrial parks based on carbon flow tracking provided in application number 202210700538.8 calculates the carbon emissions corresponding to the unit electricity consumption of each node according to the power generation and consumption data of each time period and the power distribution of each branch, that is, the carbon emission factor of purchased electricity of the enterprise at the node position in that time period. It can effectively reflect the carbon emissions of electricity at different times and nodes, and set up a monitoring center as the background for display. However, if multiple signals are collected and there are errors due to non-standard collection instruments, the existing carbon accounting method will ignore the anomaly of this data and calculate the carbon emissions as abnormal data. The validity of the calculated carbon emissions, that is, the carbon emission data, cannot be guaranteed, and an accurate low-carbon development plan cannot be obtained. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a park-level carbon emission data collection device in view of the deficiencies of the background technology, which effectively solves the problem that errors in carbon emission data affect the accuracy of low-carbon development plans formulated based on carbon emission data.

[0005] The utility model adopts the following technical solutions to solve the above technical problems

[0006] A park-level carbon emission data acquisition device comprises a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a strobe switch control module, a voltage-dividing follower filter unit, an A / D conversion unit, a controller module, a crystal oscillator module, a clock module, a data storage module, an external command input module, a data real-time display module and a power supply module; the output end of the carbon content detection instrument is connected to the input end of the signal conditioning circuit, the output end of the signal conditioning circuit is connected to the input end of the data acquisition circuit, the output end of the data acquisition circuit is connected to the input end of the strobe switch control module, the output end of the strobe switch control module is connected to the input end of the voltage-dividing follower filter unit, the output end of the voltage-dividing follower filter unit is connected to the input end of the A / D conversion unit, the output end of the A / D conversion unit is connected to the input end of the controller module, and the crystal oscillator module, the clock module, the data storage module, the external command input module, the data real-time display module and the power supply module are respectively connected to the controller module.

[0007] As a further preferred embodiment of a park-level carbon emission data acquisition device of the utility model, the signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

[0008] As a further preferred embodiment of a park-level carbon emission data collection device of the utility model, the voltage divider follower filter unit includes an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit.

[0009] As a further preferred solution of a park-level carbon emission data acquisition device of the utility model, the selection switch control module includes a TTL level conversion unit, a coaxial switch switching unit and an analog signal switching unit, which are used to realize input signal selection and power on-off control of the device under test, so that the device under test can enter the monitoring state safely and quickly.

[0010] As a further preferred embodiment of a park-level carbon emission data acquisition device of the utility model, the controller module includes an AD acquisition control unit, a data processing and RAM read-write module unit, a port control unit, a synchronous clock control unit, a command deframing unit, a FIFO data cache unit, a Flash data storage control unit, and a data reading unit; the output end of the data acquisition circuit is connected to the input end of the AD acquisition control unit, the AD acquisition control unit is connected to the data processing and RAM read-write module unit, and the data processing and RAM read-write module unit is connected to the input end of the data real-time display module through the FIFO data cache unit; the data processing and RAM read-write module unit is respectively connected to the TTL level conversion unit, the coaxial switch switching unit and the analog signal switching unit through the port control unit, the external command input module is respectively connected to the AD acquisition control unit and the port control unit through the command deframing unit, the synchronous clock control unit is respectively connected to the port control unit and the FIFO data cache unit, the data processing and RAM read-write module unit is respectively connected to the Flash data storage control unit and the data reading unit, and the data reading unit is also connected to the data storage module through the Flash data storage control unit.

[0011] As a further preferred solution of the park-level carbon emission data collection device of the utility model, the data storage module adopts ST's S25FL128P Flash memory for real-time storage, with a storage capacity of 128Mbit, and establishes communication with an external controller through an SPI interface, and the maximum clock frequency of the interface can reach 104MHz.

[0012] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0013] 1. The utility model discloses a park-level carbon emission data acquisition device, which comprises a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a gating switch control module, a voltage follower filter unit, an A / D conversion unit, and a controller module. The carbon emission data parameters are collected in real time through the carbon content detection instrument. The analog signal of the input measurement system is filtered and amplitude controlled through the signal conditioning circuit and the data acquisition circuit connected in sequence to ensure that the analog signal of the input acquisition chip is more stable. The gating switch control module comprises a TTL level conversion unit, a coaxial switch switching unit, and an analog signal switching unit, which are used to realize the input signal gating and power on / off control of the device under test, so that the device under test can safely and quickly enter the monitoring state and complete the carbon emission data collection.

[0014] 2. The controller module of the utility model adopts the Spartan6 series FPGA of Xilinx as the core control device, realizing the functions of data acquisition control, data caching, data processing, data storage, data transmission and synchronous clock control, and has the characteristics of high precision, fast speed, good reliability, strong real-time performance and low cost;

[0015] 3. The signal to be collected by the utility model is processed successively through signal conditioning, analog switch, voltage follower and anti-aliasing filtering, and then converted by a successive approximation AD chip. The collected signal has higher accuracy and is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall system structure of the utility model;

[0017] Figure 2 It is a circuit diagram of the signal conditioning circuit of the utility model;

[0018] Figure 3 It is a circuit diagram of the voltage-dividing follower filtering unit of the utility model;

[0019] Figure 4 It is a structural principle diagram of the FPGA core control module of the utility model. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] A park-level carbon emission data collection device, such as Figure 1As shown, it includes a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a strobe switch control module, a voltage follower filter unit, an A / D conversion unit, a controller module, a crystal oscillator module, a clock module, a data storage module, an external command input module, a data real-time display module and a power module; the output end of the carbon content detection instrument is connected to the input end of the signal conditioning circuit, the output end of the signal conditioning circuit is connected to the input end of the data acquisition circuit, the output end of the data acquisition circuit is connected to the input end of the strobe switch control module, the output end of the strobe switch control module is connected to the input end of the voltage follower filter unit, the output end of the voltage follower filter unit is connected to the input end of the A / D conversion unit, the output end of the A / D conversion unit is connected to the input end of the controller module, and the crystal oscillator module, the clock module, the data storage module, the external command input module, the data real-time display module and the power module are respectively connected to the controller module.

[0023] The carbon emission data include but are not limited to fossil combustion carbon data, industrial production carbon data, electricity consumption carbon data, commuting transportation carbon data, and raw material carbon data. The fossil combustion carbon data refers to the emissions of CO2, CH4, N2O, etc. generated by the combustion of fossil fuels in the operation of public buildings and enterprises during the accounting and reporting period. The industrial production carbon data refers to the CO2 emissions caused by greenhouse gas emissions caused by physical or chemical changes of raw materials in the industrial production process other than fuel combustion in the operation of public buildings and enterprises during the accounting and reporting period. The electricity consumption carbon data refers to the CO2 emissions generated by electricity consumption and heat consumption in the operation of public buildings and enterprises during the accounting and reporting period. The commuting transportation carbon data refers to the CO2 emissions generated by business travel, employment, and other activities of users in the operation of public buildings and enterprises. The carbon data of raw materials refers to the CO2 emissions generated during the production, transportation and waiting for combustion of raw materials purchased from outside the company during the accounting and reporting period. The carbon emission data is based on multiple signals detected by a carbon content detection instrument, and the multiple signals are output to the carbon emission model for calculation. The carbon content detection instrument includes a spectrometer, a sensor, a carbon emission monitor, an atmospheric sample collector, a haze sensor, a microscope, a wind speed sensor and a gas analyzer, etc. The sensors include but are not limited to carbon dioxide sensors, methane sensors and nitrogen oxide sensors.

[0024] Among them, the signal conditioning circuit and data acquisition circuit connected in sequence are used to filter and control the amplitude of the analog signal input to the measurement system to ensure that the analog signal input to the acquisition chip is more stable.

[0025] The gating switch control module includes a TTL level conversion unit, a coaxial switch switching unit and an analog signal switching unit, which are used to realize input signal gating and power on / off control of the device under test, so that the device under test can enter the monitoring state safely and quickly.

[0026] like Figure 2 As shown, the signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

[0027] As the key component of the conditioning circuit, the utility model selects the AD8608 operational amplifier chip of ADI Company. The chip combines many excellent characteristics, has four-rail input and output while being powered by a single power supply, and can ensure high speed while also ensuring extremely low noise and input bias current, and is widely applicable to various circuits;

[0028] Since the input impedance of the op amp is generally very high, it is very susceptible to external interference when the input pin is left floating. Therefore, setting the resistor R2 can form a loop between the input end and the analog ground when the input pin is left floating, thereby ensuring the stability of the op amp.

[0029] like Figure 3 As shown, the voltage divider follower filter unit includes an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit.

[0030] The signal passes through the analog switch and the voltage follower filter circuit, and then is input into the AD converter. The voltage follower makes the circuit present high impedance input and low impedance output, improving the circuit's load capacity. The chip model of the operational amplifier U3 and the operational amplifier U4 is AD8031. The maximum sampling current of the ACS714 chip is 5A.

[0031] like Figure 4As shown, the FPGA core control module includes an AD acquisition control unit, a data processing and RAM read-write module unit, a port control unit, a synchronous clock control unit, a command de-framing unit, a FIFO data cache unit, a Flash data storage control unit, and a data reading unit; the output end of the data acquisition circuit is connected to the input end of the AD acquisition control unit, the AD acquisition control unit is connected to the data processing and RAM read-write module unit, and the data processing and RAM read-write module unit is connected to the input end of the data real-time display module through the FIFO data cache unit; the data processing and RAM read-write module unit is respectively connected to the TTL level conversion unit, the coaxial switch switching unit and the analog signal switching unit through the port control unit, the external command input module is respectively connected to the AD acquisition control unit and the port control unit through the command de-framing unit, the synchronous clock control unit is respectively connected to the port control unit and the FIFO data cache unit, the data processing and RAM read-write module unit is respectively connected to the Flash data storage control unit and the data reading unit, and the data reading unit is also connected to the data storage module through the Flash data storage control unit.

[0032] The data acquisition circuit adopts the high-precision, low-power, charge redistribution successive approximation analog-to-digital converter AD7609 of ADI Company, which is an 8-channel, 18-bit, true differential, synchronous sampling analog-to-digital conversion chip.

[0033] The data storage module uses ST's S25FL128P Flash memory for real-time storage. The chip has a storage capacity of 128Mbit and communicates with an external controller via an SPI interface, and the maximum clock frequency of the interface can reach 104MHz.

[0034] The gating switch control system uses the 1-to-8 multiplexing switch ADG1408 and the solid-state relay G3FD-X03SN to realize the input signal gating and power on / off control of the device under test, so that the device under test can enter the monitoring state safely and quickly. This system needs to perform synchronous real-time cycle measurement and control on 8 devices under test, and record, interpret, transmit and store the measurement data. It mainly includes: power supply management and power control, real-time monitoring of DC voltage and current, analog signal channel switching, RF signal switching, data storage and other functions.

[0035] After the system is powered on, wait for the FPGA to be initialized and enter the waiting state. When the relevant command parameters are input externally, the FPGA receives and parses the command. First, control the operation of the internal selection switch of the system to connect the selected device signal to the acquisition system. Then send control information to the device under test, and the acquisition system monitors the power supply of the device under test in real time. Subsequently, the collected data is cached in the random access memory (RAM) inside the FPGA and waits for processing. Finally, the collected data is transmitted back to the external monitor through the first input first output (FIFO) queue on the FPGA chip for real-time display, and judged and stored according to the corresponding rules to form a test data report.

[0036] Since the voltage amplitude of the measured signal of the input system is 27V, it is impossible to directly collect and process the measured signal. Therefore, this system designs a signal conditioning circuit to filter and control the amplitude of the analog signal of the input system. This circuit uses the programmable amplifier AD8065 to design a second-order active Butterworth low-pass filter with a relatively flat passband to filter the front-end input analog voltage signal. Subsequently, the chip MAX4080 is used to convert the analog current signal into an analog voltage signal. Then, the measured analog voltage is proportionally reduced using a high-precision resistor network voltage divider, and then the analog voltage is conditioned by the high-performance operational amplifier AD8276. Finally, it is transmitted to the analog-to-digital converter (ADC) for sampling. After this hardware conditioning, the analog voltage signal of the input acquisition chip can be guaranteed to have smooth and stable characteristics.

[0037] The A / D analog-to-digital converter is the core device of data acquisition, which affects the sampling accuracy, sampling rate and data throughput of the entire system, so chip selection is the most critical step in the design of the acquisition system. This system design uses ADI's high-precision, low-power, charge redistribution successive approximation analog-to-digital converter AD7609, which is an 8-channel, 18-bit, true differential, synchronous sampling analog-to-digital conversion chip. This system uses two AD7609 chips to form a 16-channel data acquisition circuit. The AD7609 hardware circuit directly connects the parallel / serial interface selection input to the 3.3V level, then shorts the chip pins CONVST A and CONVST B together, and applies the same conversion signal to achieve simultaneous conversion of 8 channels.

[0038] After the data acquisition is completed, the sampled data of the corresponding channel is sent to the monitor for real-time display and stored in the Flash memory, waiting for the external controller to send a read command. This system uses ST's S25FL128P Flash memory for real-time storage. The chip has a storage capacity of 128Mbit and communicates with the external controller through the SPI interface. The maximum clock frequency of the interface can reach 104MHz. The chip has the characteristics of simple design, stable storage data and low price, and has wide practicality.

[0039] The utility model discloses a park-level carbon emission data acquisition device, which comprises a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a gating switch control module, a voltage-following filter unit, an A / D conversion unit, and a controller module. The carbon emission data parameters are collected in real time through the carbon content detection instrument. The analog signal of the input measurement system is filtered and amplitude controlled through the signal conditioning circuit and the data acquisition circuit connected in sequence to ensure that the analog signal of the input acquisition chip is more stable. The gating switch control module comprises a TTL level conversion unit, a coaxial switch switching unit, and an analog signal switching unit, which are used to realize the input signal gating and power on / off control of the device under test, so that the device under test can safely and quickly enter the monitoring state to complete the carbon emission data acquisition.

[0040] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0041] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0042] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A park-level carbon emission data collection device, characterized in that: The invention comprises a carbon content detection instrument, a signal conditioning circuit, a data acquisition circuit, a strobe switch control module, a voltage-dividing follower filter unit, an A / D conversion unit, a controller module, a crystal oscillator module, a clock module, a data storage module, an external command input module, a data real-time display module and a power supply module; the output end of the carbon content detection instrument is connected to the input end of the signal conditioning circuit, the output end of the signal conditioning circuit is connected to the input end of the data acquisition circuit, the output end of the data acquisition circuit is connected to the input end of the strobe switch control module, the output end of the strobe switch control module is connected to the input end of the voltage-dividing follower filter unit, the output end of the voltage-dividing follower filter unit is connected to the input end of the A / D conversion unit, the output end of the A / D conversion unit is connected to the input end of the controller module, and the crystal oscillator module, the clock module, the data storage module, the external command input module, the data real-time display module and the power supply module are respectively connected to the controller module.

2. The park-level carbon emission data collection device according to claim 1, characterized in that: The signal conditioning circuit includes an analog signal input terminal, a resistor R1, a resistor R2, a capacitor C1, and an operational amplifier U1. The analog signal input terminal is respectively connected to one end of the resistor R1 and one end of the resistor R2, the other end of the resistor R2 is connected to one end of the capacitor C1, the other end of the capacitor C1 is respectively connected to the other end of the resistor R1 and the positive input terminal of the operational amplifier U1, and the negative input terminal of the operational amplifier U1 is connected to the output terminal of the operational amplifier U1.

3. The park-level carbon emission data collection device according to claim 1, characterized in that: The voltage divider follower filter unit includes an operational amplifier U3, a resistor R11, a resistor R12, an operational amplifier U4, a resistor R13, and a capacitor C7. The output end of the operational amplifier U3 is connected to one end of the resistor R12, and the other end of the resistor R12 is respectively connected to one end of the resistor R11 and the positive input end of the operational amplifier U4. The output end of the operational amplifier U4 is connected to one end of the resistor R13, and the other end of the resistor R13 is respectively connected to one end of the capacitor C7 and the A / D conversion unit. The other end of the capacitor C7 is grounded, and the other end of the resistor R11 is connected to the current signal conditioning circuit.

4. The park-level carbon emission data collection device according to claim 1, characterized in that: The gating switch control module includes a TTL level conversion unit, a coaxial switch switching unit and an analog signal switching unit, which are used to realize input signal gating and power on / off control of the device under test, so that the device under test can enter the monitoring state safely and quickly.

5. The park-level carbon emission data collection device according to claim 1, characterized in that: The controller module includes an AD acquisition control unit, a data processing and RAM read-write module unit, a port control unit, a synchronous clock control unit, a command de-framing unit, a FIFO data cache unit, a Flash data storage control unit, and a data reading unit; the output end of the data acquisition circuit is connected to the input end of the AD acquisition control unit, the AD acquisition control unit is connected to the data processing and RAM read-write module unit, and the data processing and RAM read-write module unit is connected to the input end of the data real-time display module through the FIFO data cache unit; the data processing and RAM read-write module unit is respectively connected to the TTL level conversion unit, the coaxial switch switching unit and the analog signal switching unit through the port control unit, the external command input module is respectively connected to the AD acquisition control unit and the port control unit through the command de-framing unit, the synchronous clock control unit is respectively connected to the port control unit and the FIFO data cache unit, the data processing and RAM read-write module unit is respectively connected to the Flash data storage control unit and the data reading unit, and the data reading unit is also connected to the data storage module through the Flash data storage control unit.

6. The park-level carbon emission data collection device according to claim 1, characterized in that: The data storage module uses ST's S25FL128P Flash memory for real-time storage, with a storage capacity of 128Mbit, and establishes communication with an external controller via an SPI interface, with a maximum clock frequency of 104MHz.

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