Sensing information processing equipment and information sensing system

Abstract

The invention discloses sensing information processing equipment and an information sensing system, and belongs to the field of information sensing, firstly, a charging module charges under the action of an analog electric signal, and a voltage-controlled discharging circuit discharges or stops discharging according to the relationship between the voltage of the charging module and a turn-on and turn-off threshold value to generate a discharging pulse; the processor determines target information by analyzing the pulse frequency of the discharge pulse; from the perspective of accuracy, the pulse frequency in the digital form is high in anti-interference capability, the influence of external factors on signals can be reduced, the problem of distortion caused by the fact that analog signals are easily interfered is avoided, and therefore the accuracy of determining target information is improved; from the aspect of circuit complexity, the equipment does not need a complex analog signal processing circuit, information processing can be completed only by means of the charging module, the voltage-controlled discharging circuit and the processor, the circuit structure is simplified, and the complexity is reduced.

Description

Technical Field

[0001] The present invention relates to the field of information sensing, and in particular to a sensing information processing device and an information sensing system. Background Art

[0002] In the field of information sensing, various types of sensors can usually collect target information (such as target gas concentration, temperature, light intensity, etc.) in the form of analog electrical signals. In order to obtain the target information collected by the sensor, it is necessary to determine the target information collected by the sensor based on the analog electrical signals (through sensor information processing equipment). However, the relevant technology lacks a mature sensor information processing equipment, resulting in poor accuracy in determining the target information collected by the sensor and high circuit complexity.

[0003] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. Summary of the Invention

[0004] The purpose of the present invention is to provide a sensing information processing device and an information sensing system, in which a charging module is charged under the action of an analog electrical signal, and a voltage-controlled discharge circuit discharges or stops discharging according to the relationship between the charging module voltage and the on / off threshold, thereby generating a discharge pulse; a processor determines target information by analyzing the pulse frequency of the discharge pulse; in terms of accuracy, the digital form of the pulse frequency has a strong anti-interference ability, which can reduce the influence of external factors on the signal and avoid the distortion problem caused by the susceptibility of analog signals to interference, thereby improving the accuracy of determining the target information; in terms of circuit complexity, the device does not require a complex analog signal processing circuit, and can complete information processing only by relying on the charging module, the voltage-controlled discharge circuit and the processor, which simplifies the circuit structure and reduces the complexity.

[0005] To solve the above technical problems, the present invention provides a sensor information processing device, comprising:

[0006] A charging module connected to the sensor, used for charging under the action of the analog electrical signal output by the sensor;

[0007] A voltage-controlled discharge circuit connected to the charging module is used to discharge the charging module when the real-time voltage value of the charging module is greater than its own conduction threshold, and stop discharging the charging module when the real-time voltage value of the charging module is less than its own shut-off threshold;

[0008] The processor connected to the voltage-controlled discharge circuit is used to determine the target information collected by the sensor according to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit.

[0009] On the other hand, the charging module includes a first resistor and an energy storage device;

[0010] The first end of the first resistor is connected to the output end of the sensor, the second end of the first resistor is respectively connected to the control end of the voltage-controlled discharge circuit and the first end of the energy storage device, and the second end of the energy storage device is grounded.

[0011] On the other hand, the voltage-controlled discharge circuit includes an on-off control device and a second resistor;

[0012] The first end of the on-off control device is connected to the first end of the energy storage device, the second end of the on-off control device is connected to the first end of the second resistor and the processor respectively, and the second end of the second resistor is grounded;

[0013] The on-off control device is used to turn on when the voltage value of the first end of the energy storage device is higher than the on-threshold value, and to turn off when the voltage value of the first end of the energy storage device is lower than the off-threshold value.

[0014] On the other hand, the on-off control device includes a threshold-type memristor.

[0015] On the other hand, the sensor information processing device further includes:

[0016] The prompting device connected to the processor is used to prompt the target information collected by the sensor under the control of the processor.

[0017] On the other hand, the sensor information processing device also includes a wireless transmission device and a network terminal;

[0018] The wireless transmission device is connected to the processor and the network terminal respectively;

[0019] The processor is further configured to send the target information collected by the sensor to the network terminal via the wireless transmission device.

[0020] On the other hand, the processor is specifically configured to:

[0021] Determining the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit;

[0022] determining target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit according to a preset first corresponding relationship;

[0023] The first corresponding relationship includes the corresponding relationship between pulse frequency and target information.

[0024] On the other hand, the target information collected by the sensor includes target information that is sensitive to environmental parameters;

[0025] The sensor information processing device further includes:

[0026] An environmental parameter collection device connected to the processor, used to collect environmental parameters of preset types in the environment;

[0027] Determining, according to the preset first corresponding relationship, target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit includes:

[0028] Obtaining the current environmental parameters of the preset type in the environment through the environmental parameter acquisition device;

[0029] Determining a first corresponding relationship corresponding to the current preset type of environmental parameter from a plurality of preset first corresponding relationships corresponding to different environmental parameters, and using the determined first corresponding relationship as a target corresponding relationship;

[0030] According to the target correspondence, target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit is determined.

[0031] On the other hand, the sensor is a formaldehyde concentration sensor;

[0032] The environmental parameter acquisition device includes a temperature sensor and / or a humidity sensor;

[0033] The temperature sensor is used to obtain the ambient temperature;

[0034] The humidity sensor is used to obtain ambient humidity.

[0035] In order to solve the above technical problems, the present invention also provides an information sensing system, including a sensor and the sensing information processing device as described above.

[0036] Beneficial effects: The present invention provides a sensing information processing device. First, the charging module is charged under the action of an analog electrical signal, and the voltage-controlled discharge circuit discharges or stops discharging according to the relationship between the charging module voltage and the on-off threshold and the off-off threshold, thereby generating a discharge pulse; the processor determines the target information by analyzing the pulse frequency of the discharge pulse; in terms of accuracy, the digital form of the pulse frequency has a strong anti-interference ability, which can reduce the influence of external factors on the signal and avoid the distortion problem caused by the susceptibility of analog signals to interference, thereby improving the accuracy of determining the target information; in terms of circuit complexity, the device does not require a complex analog signal processing circuit, and only relies on the charging module, the voltage-controlled discharge circuit and the processor to complete information processing, which simplifies the circuit structure and reduces the complexity.

[0037] The present invention also provides an information sensing system having the same beneficial effects as the above-mentioned sensing information processing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the relevant technologies and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 A schematic structural diagram of a sensor information processing device provided by the present invention;

[0040] Figure 2 A schematic structural diagram of a charging module and a voltage-controlled discharge circuit provided by the present invention;

[0041] Figure 3 A schematic structural diagram of another sensor information processing device provided by the present invention;

[0042] Figure 4 This is a structural schematic diagram of a formaldehyde concentration sensor provided by the present invention. DETAILED DESCRIPTION

[0043] The core of the present invention is to provide a sensing information processing device and an information sensing system. The charging module is charged under the action of an analog electrical signal, and the voltage-controlled discharge circuit discharges or stops discharging according to the relationship between the charging module voltage and the on-off threshold and the off-off threshold to generate a discharge pulse; the processor determines the target information by analyzing the pulse frequency of the discharge pulse; in terms of accuracy, the digital form of the pulse frequency has strong anti-interference ability, which can reduce the impact of external factors on the signal and avoid the distortion problem caused by the analog signal being susceptible to interference, thereby improving the accuracy of determining the target information; in terms of circuit complexity, the device does not require a complex analog signal processing circuit, and can complete information processing only by relying on the charging module, the voltage-controlled discharge circuit and the processor, which simplifies the circuit structure and reduces complexity.

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] Please refer to Figure 1 , Figure 1 This is a structural diagram of a sensor information processing device provided by the present invention, which includes:

[0046] A charging module 1 connected to the sensor, used for charging under the action of the analog electrical signal output by the sensor;

[0047] The voltage-controlled discharge circuit 2 connected to the charging module 1 is used to discharge the charging module 1 when the real-time voltage value of the charging module 1 is greater than its own conduction threshold, and stop discharging the charging module 1 when the real-time voltage value of the charging module 1 is less than its own shut-off threshold;

[0048] The processor 3 connected to the voltage-controlled discharge circuit 2 is used to determine the target information collected by the sensor according to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2.

[0049] Specifically, taking into account the technical problems in the above background technology, and considering that the voltage level of the analog electrical signal output by the sensor can usually reflect the numerical level of the target information collected by the sensor, and in the process of charging using the analog electrical signal, the charging speed of the analog electrical signal can also reflect the numerical level of the target information. Accordingly, the charging module 1 charged by the analog electrical signal is controlled to discharge after reaching a specific voltage value and stop discharging after decreasing to a specific voltage value. The charging speed can be converted into the pulse frequency of the discharge pulse, that is, the charging speed of the charging module 1 can be determined by the pulse frequency, and the voltage value of the analog electrical signal can be determined according to the charging speed. Finally, the target information collected by the sensor can be determined according to the voltage value of the analog electrical signal. Therefore, the sensor in the embodiment of the present invention The information processing device includes a charging module 1, a voltage-controlled discharge circuit 2 and a processor 3. The charging module 1 can be charged under the action of the analog electrical signal output by the sensor, and the voltage-controlled discharge circuit 2 can discharge the charging module 1 when the real-time voltage value of the charging module 1 is greater than its own conduction threshold, and stop discharging the charging module 1 when the real-time voltage value of the charging module 1 is less than its own shutdown threshold, thereby converting the analog electrical signal into the pulse frequency of the discharge pulse, and finally handing it over to the processor 3 to determine the target information collected by the sensor according to the pulse frequency; in this case, there is no need to set up a complex analog electrical signal processing circuit. Through a simple charging module 1, a voltage-controlled discharge circuit 2 and a processor 3, the target information collected by the sensor can be acquired efficiently and accurately, which is conducive to reducing circuit complexity and saving costs.

[0050] Specifically, the on-threshold and the off-threshold can be independently set according to actual needs, and the embodiment of the present invention does not limit this.

[0051] The specific types of sensors can be various, and the output signal thereof can be in the form of an analog electrical signal, which is not limited in the embodiment of the present invention.

[0052] The present invention provides a sensing information processing device. First, a charging module is charged under the action of an analog electrical signal, and a voltage-controlled discharge circuit discharges or stops discharging according to the relationship between the charging module voltage and the on / off threshold, thereby generating a discharge pulse. A processor determines target information by analyzing the pulse frequency of the discharge pulse. In terms of accuracy, the digital pulse frequency has a strong anti-interference ability, which can reduce the influence of external factors on the signal and avoid the distortion problem caused by the analog signal being susceptible to interference, thereby improving the accuracy of determining the target information. In terms of circuit complexity, the device does not require a complex analog signal processing circuit, and can complete information processing only by relying on the charging module, the voltage-controlled discharge circuit and the processor, thereby simplifying the circuit structure and reducing complexity.

[0053] Based on the above embodiment:

[0054] As an optional embodiment, the charging module 1 includes a first resistor and an energy storage device;

[0055] The first end of the first resistor is respectively connected to the output end of the sensor, the second end of the energy storage device and the ground, and the second end of the first resistor is respectively connected to the control end of the voltage-controlled discharge circuit 2 and the first end of the energy storage device.

[0056] Specifically, to better illustrate the embodiments of the present invention, please refer to Figure 2 , Figure 2 This is a structural diagram of a charging module 1 and a voltage-controlled discharge circuit 2 provided by the present invention. Figure 2 In the figure, R1 represents the first resistor, V1 represents the analog electrical signal output by the sensor, and C1 represents the energy storage device.

[0057] Specifically, in an embodiment of the present invention, the charging module 1 is composed of a first resistor and an energy storage device. Taking an actual application scenario as an example, assuming that the sensor is a formaldehyde concentration sensor, when the formaldehyde concentration changes, the formaldehyde concentration sensor will output an analog electrical signal. At this time, the first end of the first resistor is connected to the output end of the formaldehyde concentration sensor, and the second end of the first resistor is respectively connected to the control end of the voltage-controlled discharge circuit 2 and the first end of the energy storage device, and the second end of the energy storage device is grounded. Under the action of the analog electrical signal, the current charges the energy storage device through the first resistor, and the size of the analog electrical signal will affect the charging rate and the change in the real-time voltage value of the energy storage device. For example, when the formaldehyde concentration is high, the analog electrical signal output by the sensor is strong, the charging speed of the energy storage device is accelerated, and the voltage value thereof rises faster accordingly.

[0058] Among them, the first resistor can be a high-precision, low-temperature-coefficient resistor to reduce the impact of temperature changes on the resistance value, thereby improving the stability of the charging module 1. For example, a metal film resistor can be used, the accuracy of which can reach ±0.1% or even higher, and the temperature coefficient can be as low as ±20ppm / °C. In addition to traditional capacitors, supercapacitors can also be considered as energy storage devices. Supercapacitors have the advantages of large capacity, fast charging and discharging speed, and long life. When the analog electrical signal output by the sensor changes rapidly, the supercapacitor can respond quickly and store more electrical energy. At the same time, a small-capacity ceramic capacitor can be connected in parallel at both ends of the energy storage device to filter out high-frequency noise and improve the anti-interference ability of the charging module 1.

[0059] Specifically, the charging module 1 in the embodiment of the present invention has the advantages of simple structure, low cost and strong stability.

[0060] The energy storage device may be of various types, such as a capacitor, etc., which is not limited in the embodiment of the present invention.

[0061] Of course, in addition to this specific structure, the charging module 1 can also have many other structures, which is not limited in the embodiment of the present invention.

[0062] As an optional embodiment, the voltage-controlled discharge circuit 2 includes an on-off control device and a second resistor;

[0063] The first end of the on-off control device is connected to the first end of the energy storage device, the second end of the on-off control device is connected to the first end of the second resistor and the processor 3 respectively, and the second end of the second resistor is grounded;

[0064] The on-off control device is used to turn on when the voltage value of the first terminal of the energy storage device is higher than the on-threshold value, and to turn off when the voltage value of the first terminal of the energy storage device is lower than the off-threshold value.

[0065] Specifically, Figure 2 R2 represents the second resistor, M represents the on-off control device, and V2 represents the output pulse of the voltage-controlled discharge circuit 2.

[0066] Specifically, when the voltage at the second terminal of the energy storage device exceeds the on-threshold, the on-off control device turns on. The energy storage device then discharges through the on-off control device and the second resistor, generating a discharge pulse signal that is transmitted to processor 3. When the voltage at the second terminal of the energy storage device falls below the off-threshold, the on-off control device turns off, ceasing discharge. If the voltage of the energy storage device fluctuates between the on-threshold and off-threshold, the on-off control device switches on and off repeatedly accordingly, generating discharge pulses of varying frequencies, which provide a basis for processor 3 to determine target information such as formaldehyde concentration.

[0067] Specifically, the voltage-controlled discharge circuit 2 in the embodiment of the present invention has the advantages of simple structure, low cost and strong stability.

[0068] Of course, in addition to this specific form, the voltage-controlled discharge circuit 2 can also be in many other forms, which is not limited in the embodiment of the present invention.

[0069] In addition, as an optional embodiment, the on-off control device may include a first on-off control sub-device, a second on-off control sub-device and a switching circuit;

[0070] The first end of the first on-off control sub-device and the first end of the second on-off control sub-device are both connected to the second end of the energy storage device through the switching circuit, the second end of the first on-off control sub-device and the second end of the second on-off control sub-device are both connected to the first end of the second resistor and the processor 3, and the switching circuit is also connected to the processor 3;

[0071] The switching circuit is used to simultaneously electrically connect one of the first on-off control sub-device and the second on-off control sub-device to the energy storage device under the control of the processor 3 .

[0072] Specifically, considering the possibility of failure of the on-off control device, as an important component in the sensor information processing equipment, once the on-off control device fails, it will directly lead to the paralysis of the sensor information processing equipment. Therefore, the on-off control device in the embodiment of the present invention may include a first on-off control sub-device, a second on-off control sub-device and a switching circuit. The processor 3 can simultaneously electrically connect one of the first on-off control sub-device and the second on-off control sub-device with the energy storage device through the switching circuit. Then, when one of the on-off control sub-devices fails, the processor 3 can switch the failed on-off control sub-device through the switching circuit, and realize the electrical connection between the other healthy on-off control sub-device and the energy storage device, so as to quickly restore the normal operation of the sensor information processing equipment.

[0073] The switch may be of various types. For example, an analog switch chip such as CD4053 may be selected. It can switch between different channels under the control of the processor 3 and has the characteristics of low on-resistance and high isolation.

[0074] Specifically, in normal operating mode, processor 3 defaults to controlling the switching circuit so that the first on-off control sub-device (threshold-type memristor) is electrically connected to the energy storage device. The formaldehyde concentration sensor outputs an analog electrical signal corresponding to the formaldehyde concentration, which charges the energy storage device. When the voltage of the energy storage device reaches the conduction threshold of the threshold-type memristor, the memristor turns on, and the energy storage device discharges through the memristor and the second resistor, generating a discharge pulse signal that is transmitted to processor 3. The processor can monitor the status of the discharge pulse signal in real time. When an abnormality is detected in the discharge pulse signal (such as a pulse frequency outside the normal range or an abnormal pulse amplitude), processor 3 determines that the first on-off control sub-device may be faulty. It then sends a control signal to the switching circuit, causing it to disconnect the first on-off control sub-device from the energy storage device and simultaneously electrically connect the second on-off control sub-device to the energy storage device. At this time, when the voltage of the energy storage device reaches the conduction threshold of the second on-off control sub-device, the second on-off control sub-device is turned on, and the energy storage device discharges through the second on-off control sub-device and the second resistor, and continues to generate a discharge pulse signal transmitted to the processor 3, ensuring that the system can continue to work normally. At the same time, the processor 3 can issue a fault alarm to prompt the user to check and repair the first on-off control sub-device.

[0075] As an optional embodiment, the on-off control device includes a threshold-type memristor.

[0076] Specifically, when the on-off control device uses a threshold-type memristor, the unique electrical properties of the memristor are utilized. The analog electrical signal output by the sensor (for example, a formaldehyde concentration sensor in a formaldehyde monitoring scenario) is passed through charging module 1 to charge the energy storage device. When the voltage of the energy storage device reaches the on-threshold of the threshold-type memristor, the memristor transitions from a high-resistance state to a low-resistance state, the circuit is turned on, and the energy storage device begins discharging. When the voltage falls below the off-threshold of the memristor, the memristor returns to a high-resistance state, and discharging ceases. Because the analog electrical signal output by the sensor varies at different values of the collected target information (for example, at different values of formaldehyde concentration), the charging time and voltage variation of the energy storage device vary, resulting in different on- and off-frequency variations of the memristor. By detecting the frequency of the discharge pulses generated by the memristor, processor 3 can determine the specific value of the target information (for example, the specific value of the formaldehyde concentration). This approach leverages the advantages of threshold-type memristors: their sensitivity to voltage changes and their ability to integrate storage and computing, effectively reducing data transmission and processing costs and improving system performance.

[0077] The materials and structure of threshold-type memristors can be optimized to improve the stability and precision of their on and off states. For example, using novel nanomaterials to fabricate memristors can reduce their size and improve their response speed and reliability.

[0078] Specifically, formaldehyde is an organic compound, a colorless gas. It's difficult to detect at low concentrations and can be easily masked by other odors, such as air fresheners. At higher concentrations, it has a strong, pungent, and suffocating odor that irritates the eyes and nose. The renovation of homes, offices, and large shopping malls produces a large amount of harmful gases, the most critical of which is formaldehyde. Excessive formaldehyde levels are harmful to human health. Long-term inhalation of excessive formaldehyde can cause a range of high-mortality diseases, such as leukemia. Therefore, a system for monitoring formaldehyde levels is needed to ensure that formaldehyde levels in every house reach safe levels and protect the health of residents.

[0079] Of course, in addition to the formaldehyde concentration sensor, the sensor may also be of other types, which is not limited in the embodiment of the present invention.

[0080] Of course, in addition to this specific type, the on-off control device can also be of many other types, such as MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), etc., which is not limited in the embodiment of the present invention.

[0081] As an optional embodiment, the sensor information processing device further includes:

[0082] The prompting device connected to the processor 3 is used to prompt the target information collected by the sensor under the control of the processor 3.

[0083] Specifically, to better illustrate the embodiments of the present invention, please refer to Figure 3 , Figure 3 This is a structural diagram of another sensor information processing device provided by the present invention. In addition to the sensor, the charging and discharging module (that is, the combination of the charging module 1 and the voltage-controlled discharge circuit 2) and the processor 3, it also includes a prompt device, an environmental parameter collection device and a wireless transmission device, and also includes a power supply module connected to each part and supplying power to each component.

[0084] Processor 3 can be of various types, such as a microcontroller (MCU), such as the common Arduino series or STM32 series. Taking the STM32F103 as an example, it has a rich set of peripheral interfaces, allowing it to easily connect to the voltage-controlled discharge circuit 2 and receive discharge pulse signals. It also has an integrated timer for accurately measuring the frequency of the discharge pulses. It also possesses sufficient computing power to execute the algorithm for determining target information. When measuring pulse frequency, processor 3 uses an internal timer to count the discharge pulses output by the voltage-controlled discharge circuit 2. For example, the timer's counting period is set to 1 second. Within this 1-second period, the rising and falling edges of the pulses are counted, and the count value is the discharge pulse frequency. When determining target information, processor 3 pre-stores a first correspondence between pulse frequency and target information. This relationship can be stored in the form of a table or function. For example, if the sensor is a formaldehyde concentration sensor, the stored correspondence may be between pulse frequency (Hz) and weighted concentration. Based on the measured pulse frequency, processor 3 determines the corresponding target information by looking up a table or calculating a function value.

[0085] In addition, the processor 3 can also be designed as follows: (1) Use a multi-core processor 3: For application scenarios that require processing large amounts of data or complex algorithms, a multi-core processor 3 can be used, such as a multi-core processor 3 of the ARM Cortex-A series. The multi-core processor 3 can process multiple tasks in parallel, improving the speed and efficiency of data processing. (2) Add data cache: Add data cache inside or outside the processor 3, such as SRAM (Static Random Access Memory) or DRAM (Dynamic Random Access Memory), to store the collected discharge pulse data and intermediate calculation results. This can reduce the number of data transmissions between the processor 3 and the external storage device and improve the real-time performance of data processing.

[0086] The power module can be of various types, including battery power or external power. Lithium batteries, such as the common 18650, are suitable for battery power, as they offer high capacity and stable voltage. To ensure safe battery operation and provide a stable voltage for the device, a battery management module is required. For example, the TP4056 charge management chip manages the charge of the lithium battery to prevent overcharging and over-discharging. A voltage regulator chip, such as the LM1117, stabilizes the lithium battery voltage at the device's required operating voltage (e.g., 3.3V or 5V). For external power supply, the sensory and psychological processing device can be connected to a computer or power adapter via a USB (Universal Serial Bus) interface for power. This approach is suitable for devices requiring long-term, stable power supply. External power supply also requires voltage conversion and voltage regulation to meet the device's operating requirements.

[0087] Specifically, when the sensing information processing device includes a prompt device connected to the processor 3, when the processor 3 determines the target information based on the discharge pulse frequency of the voltage-controlled discharge circuit 2, it can promptly issue a prompt through the prompt device so that the staff can respond in time. For example, taking the formaldehyde monitoring scenario as an example, when the processor 3 determines the formaldehyde concentration based on the discharge pulse frequency of the voltage-controlled discharge circuit 2, if the formaldehyde concentration exceeds the safety standard, the processor 3 will control the prompt device to issue a prompt message.

[0088] Among them, the prompt device can be of various types, for example, it can be a buzzer that emits a sharp alarm sound to remind the user; it can also be an LED (Light Emitting Diode) indicator light that lights up different colors (such as red represents exceeding the standard) to intuitively display the formaldehyde concentration status; it can also be an LCD (Liquid Crystal Display) display module, etc., so that the user can promptly understand the formaldehyde situation in the environment and take corresponding measures to ensure their health. The embodiments of the present invention are not limited here.

[0089] As an optional embodiment, the sensor information processing device further includes a wireless transmission device and a network terminal;

[0090] The wireless transmission device is connected to the processor 3 and the network terminal respectively;

[0091] The processor 3 is further configured to send the target information collected by the sensor to the network terminal via a wireless transmission device.

[0092] Specifically, when the sensor information processing device is equipped with a wireless transmission device and a network terminal, after processor 3 determines the target information collected by the sensor, it can transmit the target information to a remote network terminal via the wireless transmission device, allowing users to remotely obtain the target information collected by the sensor. For example, in a formaldehyde monitoring application, after processor 3 obtains formaldehyde concentration data, it will transmit the data to the network terminal via a wireless transmission device (such as Bluetooth or WiFi (Wireless Fidelity)). Even if users are not at the monitoring site, they can still understand the changes in formaldehyde in the environment in real time, facilitating remote monitoring and management of the indoor environment.

[0093] Among them, the network terminal can be of various types, such as the user's mobile phone, computer and other devices. The user can view the sensor's target information, such as formaldehyde concentration information, anytime and anywhere through a special application or web interface. The embodiment of the present invention is not limited here.

[0094] As an optional embodiment, the processor 3 is specifically configured to:

[0095] Determine the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2;

[0096] Determining target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2 according to a preset first corresponding relationship;

[0097] The first corresponding relationship includes the corresponding relationship between the pulse frequency and the target information.

[0098] Specifically, when determining the target information, the processor 3 can first determine the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2, and then determine the target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2 based on a preset first correspondence. This allows the target information collected by the sensor to be more efficiently determined based on the pulse frequency. For example, in a formaldehyde monitoring system, a correspondence between the pulse frequency and the formaldehyde concentration (i.e., a first correspondence) can be pre-established. For example, after experimental testing and calibration, when the pulse frequency of the discharge pulse is 50 Hz, the corresponding formaldehyde concentration is 0.1 mg / m³; when the frequency is 80 Hz, the corresponding formaldehyde concentration is 0.2 mg / m³, and so on. After the processor 3 obtains the discharge pulse frequency, it can accurately determine the formaldehyde concentration in the current environment based on this correspondence, thereby achieving precise monitoring of the formaldehyde concentration.

[0099] The first corresponding relationship can be independently and flexibly set through pre-calculation, and the embodiment of the present invention does not limit this.

[0100] As an optional embodiment, the target information collected by the sensor includes target information that is sensitive to environmental parameters;

[0101] The sensor information processing equipment also includes:

[0102] An environmental parameter collection device connected to the processor 3, used to collect environmental parameters of preset types in the environment;

[0103] According to the preset first corresponding relationship, the target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2 is determined to include:

[0104] Obtaining the current preset type of environmental parameters in the environment through the environmental parameter acquisition device;

[0105] Determining a first corresponding relationship corresponding to a current preset type of environmental parameter from a plurality of preset first corresponding relationships corresponding to different environmental parameters, and using the determined first corresponding relationship as a target corresponding relationship;

[0106] According to the target correspondence, target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit 2 is determined.

[0107] Specifically, considering that for target information sensitive to environmental parameters, the correspondence between pulse frequency and target information (i.e., the first correspondence) varies under different environmental parameters. Therefore, when a sensor collects target information sensitive to environmental parameters (e.g., formaldehyde concentration), the sensor information processing device is equipped with an environmental parameter acquisition device and sets first correspondences corresponding to different environmental parameters. When determining the target information, the first correspondence corresponding to the current preset type of environmental parameter can be used as the target correspondence for determining the target information. For example, in the case of formaldehyde monitoring, the environmental parameter acquisition device includes a temperature sensor and / or a humidity sensor. Temperature and humidity affect the volatilization of formaldehyde in the air and the detection accuracy of the sensors. When determining the formaldehyde concentration, the processor 3 can select the corresponding correspondence between pulse frequency and formaldehyde concentration (i.e., the target correspondence) based on the ambient temperature acquired by the temperature sensor and the ambient humidity acquired by the humidity sensor. As the ambient temperature increases, formaldehyde volatilization accelerates. Given the same actual formaldehyde content, the analog electrical signal output by the sensor may increase, and the discharge pulse frequency may change. In this case, the processor 3 selects a correspondence that takes temperature into account, enabling more accurate determination of the formaldehyde concentration and improving monitoring accuracy.

[0108] Of course, the preset type of environmental parameters corresponds to the specific type of target information, and refers to the environmental parameters to which the target information is sensitive, which are not limited to temperature and humidity and can be independently set according to actual conditions. The embodiment of the present invention does not limit this.

[0109] As an optional embodiment, the sensor is a formaldehyde concentration sensor;

[0110] The environmental parameter acquisition device includes a temperature sensor and / or a humidity sensor;

[0111] The temperature sensor is used to obtain the ambient temperature;

[0112] The humidity sensor is used to obtain the ambient humidity.

[0113] Specifically, in the specific scenario of formaldehyde monitoring, the sensor adopts a formaldehyde concentration sensor, and the environmental parameter acquisition device includes a temperature sensor and / or a humidity sensor. The temperature sensor obtains the ambient temperature in real time, and the humidity sensor obtains the ambient humidity in real time. When the formaldehyde concentration sensor detects a change in formaldehyde concentration and outputs an analog electrical signal, after being processed by the charging module 1 and the voltage-controlled discharge circuit 2, the processor 3 receives the discharge pulse signal. The processor 3 combines the ambient temperature and humidity data collected by the temperature sensor and the humidity sensor, selects the appropriate correspondence between the pulse frequency and the formaldehyde concentration, and accurately calculates the formaldehyde concentration. If the ambient temperature is 25°C and the humidity is 50%, the processor 3 determines the formaldehyde concentration when the discharge pulse frequency is 60Hz based on the target correspondence, and provides the user with accurate formaldehyde concentration monitoring results.

[0114] Specifically, to better illustrate the embodiments of the present invention, please refer to Figure 4 , Figure 4 This is a structural diagram of a formaldehyde concentration sensor provided by the present invention. Figure 4 The weighted concentration sensor in Figure 1 consists of a third resistor, R3, and a ZnO (zinc oxide) gas sensor, RZ. When the ZnO gas sensor is exposed to air, oxygen molecules in the air are absorbed by the ZnO surface. The oxygen molecules capture electrons in the ZnO conduction band, increasing the ZnO resistance. HCHO (the chemical formula for formaldehyde) reacts with the oxygen molecules to produce water and carbon dioxide, reducing the ZnO resistance. The formaldehyde concentration sensor converts the chemical signal into an analog electrical signal and transmits it to charging module 1.

[0115] Furthermore, it's possible to collect more types of environmental parameters. For example, in addition to temperature and humidity sensors, other types of environmental parameter collection sensors, such as light sensors and air pressure sensors, can be added. These sensors can collect more environmental parameters, further improving the accuracy of target information detection. High-precision environmental parameter collection sensors can be used, and the collected data can be calibrated and filtered. For example, a high-precision temperature sensor with a measurement accuracy of ±0.1°C can be used. Calibration algorithms can eliminate sensor errors and improve the accuracy of environmental parameter collection.

[0116] The present invention also provides an information sensing system, including a sensor and a sensing information processing device as described in the aforementioned embodiment.

[0117] Specifically, the information sensing system consists of a sensor (such as a formaldehyde concentration sensor) and the aforementioned sensor information processing equipment. In actual use, the (formaldehyde concentration) sensor is responsible for collecting target information (such as formaldehyde concentration) from the environment and converting it into an analog electrical signal for output. The various modules of the sensor information processing equipment work together. Charging module 1 processes the analog electrical signal and charges the energy storage device. Voltage-controlled discharge circuit 2 generates discharge pulses based on the voltage of the energy storage device. Processor 3 determines the target information (such as formaldehyde concentration) based on the pulse frequency. The environmental parameter acquisition device collects environmental parameters such as temperature and humidity to assist processor 3 in more accurately calculating the target information (such as formaldehyde concentration). The prompting device and wireless transmission device respectively implement prompting and remote transmission functions for the target information (such as formaldehyde concentration), jointly completing real-time monitoring and information processing of the target information (such as formaldehyde concentration).

[0118] For an introduction to the information sensing system provided by an embodiment of the present invention, please refer to the embodiment of the sensing information processing device in the aforementioned embodiment, and the embodiment of the present invention will not be described in detail here.

[0119] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0120] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sensor information processing device, characterized in that: include: A charging module connected to the sensor, used for charging under the action of the analog electrical signal output by the sensor; A voltage-controlled discharge circuit connected to the charging module is used to discharge the charging module when the real-time voltage value of the charging module is greater than its own conduction threshold, and stop discharging the charging module when the real-time voltage value of the charging module is less than its own shut-off threshold; The processor connected to the voltage-controlled discharge circuit is used to determine the target information collected by the sensor according to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit.

2. The sensor information processing device according to claim 1, characterized in that The charging module includes a first resistor and an energy storage device; The first end of the first resistor is connected to the output end of the sensor, the second end of the first resistor is respectively connected to the control end of the voltage-controlled discharge circuit and the first end of the energy storage device, and the second end of the energy storage device is grounded.

3. The sensor information processing device according to claim 2, characterized in that The voltage-controlled discharge circuit includes an on-off control device and a second resistor; The first end of the on-off control device is connected to the first end of the energy storage device, the second end of the on-off control device is connected to the first end of the second resistor and the processor respectively, and the second end of the second resistor is grounded; The on-off control device is used to turn on when the voltage value of the first end of the energy storage device is higher than the on-threshold value, and to turn off when the voltage value of the first end of the energy storage device is lower than the off-threshold value.

4. The sensor information processing device according to claim 3, characterized in that The on-off control device includes a threshold-type memristor.

5. The sensor information processing device according to claim 1, characterized in that The sensor information processing device further includes: The prompting device connected to the processor is used to prompt the target information collected by the sensor under the control of the processor.

6. The sensor information processing device according to claim 1, characterized in that The sensor information processing device also includes a wireless transmission device and a network terminal; The wireless transmission device is connected to the processor and the network terminal respectively; The processor is further configured to send the target information collected by the sensor to the network terminal via the wireless transmission device.

7. The sensor information processing device according to any one of claims 1 to 6, characterized in that: The processor is specifically configured to: Determining the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit; determining target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit according to a preset first corresponding relationship; The first corresponding relationship includes the corresponding relationship between pulse frequency and target information.

8. The sensor information processing device according to claim 7, characterized in that The target information collected by the sensor includes target information that is sensitive to environmental parameters; The sensor information processing device further includes: An environmental parameter collection device connected to the processor, used to collect environmental parameters of preset types in the environment; Determining, according to the preset first corresponding relationship, target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit includes: Obtaining the current environmental parameters of the preset type in the environment through the environmental parameter acquisition device; Determining a first corresponding relationship corresponding to the current preset type of environmental parameter from a plurality of preset first corresponding relationships corresponding to different environmental parameters, and using the determined first corresponding relationship as a target corresponding relationship; According to the target correspondence, target information corresponding to the pulse frequency of the discharge pulse of the voltage-controlled discharge circuit is determined.

9. The sensor information processing device according to claim 8, characterized in that The sensor is a formaldehyde concentration sensor; The environmental parameter acquisition device includes a temperature sensor and / or a humidity sensor; The temperature sensor is used to obtain the ambient temperature; The humidity sensor is used to obtain ambient humidity.

10. An information sensing system, characterized in that: The method comprises a sensor and also comprises a sensor information processing device as claimed in any one of claims 1 to 9.

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