Abstract: A method, an apparatus and a device for simultaneously sampling multiples signals and a medium are provided. The method includes: modulating multiple target input signals with CDM, to obtain a single target analog signal; performing ?? modulation on the single target analog signal to obtain a target digital bit stream; demodulating the target digital bit stream to obtain a target demodulated bit stream; and filtering the target demodulated bit stream to obtain multiple target output signals. With the method, the hardware overhead for simultaneous sampling of multiple-channel signals is reduced while ensuring accuracy. Accordingly, the apparatus and the device, and the medium have the above beneficial effects.

Abstract: The invention discloses a code testing method. The method includes the following steps of: acquiring a code set to be tested; loading the code set to a corresponding operating chip, and executing the code set by using the operating chip; judging whether a target code subset which is not successfully executed exists in the code set; and if yes, performing an audit testing operation on the code set. The code testing method provided by the invention is simple and feasible to apply, which improves a testing reliability and reduces a testing cost. The invention also discloses a code testing apparatus and device, and a storage medium, which have corresponding technical effects.

Abstract: Disclosed is a voltage regulator, which makes a low dropout regulator stop working by controlling a sampling circuit of the low dropout regulator to break in a sleep mode, and makes an output voltage of the low dropout regulator follow an output voltage of a first bias voltage generating circuit by using a first MOS transistor connected between an voltage input end and an voltage output end of the low dropout regulator in a source follower structure, and is capable of controlling an output voltage of the whole voltage regulator by a generated bias voltage applied to the first bias voltage generating circuit by a first bias current source.

Abstract: A method, an apparatus and a device for simultaneously sampling multiples signals and a medium are provided. The method includes: modulating multiple target input signals with CDM, to obtain a single target analog signal; performing ?? modulation on the single target analog signal to obtain a target digital bit stream; demodulating the target digital bit stream to obtain a target demodulated bit stream; and filtering the target demodulated bit stream to obtain multiple target output signals. With the method, the hardware overhead for simultaneous sampling of multiple-channel signals is reduced while ensuring accuracy. Accordingly, the apparatus and the device, and the medium have the above beneficial effects.

Abstract: The invention discloses a secure boot method for a terminal device, a terminal device and a medium, relates to the technical field of secure boot, and is used for solving a problem of low system boot security caused by lack of protection for system boot in the related art. The terminal device includes a first processor, a second processor and a shared memory. The method includes: acquiring, by the first processor, an SPL image file; acquiring, by the first processor and the second processor, a third duration and starting timing synchronously; in a case that the third duration expires, transmitting, by the first processor, the SPL image file to the second processor via the shared memory; and booting, by the first processor and/or the second processor, a system of the terminal device cooperatively based on the SPL image file received by the second processor.

Abstract: Disclosed is a voltage regulator, which makes a low dropout regulator stop working by controlling a sampling circuit of the low dropout regulator to break in a sleep mode, and makes an output voltage of the low dropout regulator follow an output voltage of a first bias voltage generating circuit by using a first MOS transistor connected between an voltage input end and an voltage output end of the low dropout regulator in a source follower structure, and is capable of controlling an output voltage of the whole voltage regulator by a generated bias voltage applied to the first bias voltage generating circuit by a first bias current source.

Abstract: A digital signal process device includes a first kernel module, configured for generating a corresponding control signal according to a DSP instruction code in a first read-only memory; a second kernel module, configured for generating a corresponding control signal according to a DSP instruction code in a second read-only memory; an arbitration module, configured for receiving a control signal corresponding to a memory access instruction and/or an arithmetic instruction sent by the first kernel module and the second kernel module, and screening out a control signal corresponding to a target memory access instruction and/or a target arithmetic instruction according to a preset priority; a data storage module, configured for receiving the control signal corresponding to the target memory access instruction sent by the arbitration module; and an arithmetic logic unit, configured for receiving the control signal corresponding to the target arithmetic instruction sent by the arbitration module.

Abstract: The invention discloses a code testing method. The method includes the following steps of: acquiring a code set to be tested; loading the code set to a corresponding operating chip, and executing the code set by using the operating chip; judging whether a target code subset which is not successfully executed exists in the code set; and if yes, performing an audit testing operation on the code set. The code testing method provided by the invention is simple and feasible to apply, which improves a testing reliability and reduces a testing cost. The invention also discloses a code testing apparatus and device, and a storage medium, which have corresponding technical effects.

Abstract: A DSP-based electrical energy metering device is provided. After determining a current application mode, a DSP controller compares an execution rate of each computing task with a corresponding preset comparison value, and outputs a first condition value to a condition general register based on a comparison result, so as to control an execution rate of each computing task in the DSP controller. A jump condition controller outputs a second condition value corresponding to the current application mode to the condition general register based on a change in the execution rate of each computing task compared with an execution rate of the computing task in a previous application mode, so that all computing tasks are executed. An adaptive word length controller adjusts an effective bit width of the electrical signal read by a data general register from a data memory at execution rates of different computing tasks.

Abstract: The invention discloses a secure boot method for a terminal device, a terminal device and a medium, relates to the technical field of secure boot, and is used for solving a problem of low system boot security caused by lack of protection for system boot in the related art. The terminal device includes a first processor, a second processor and a shared memory. The method includes: acquiring, by the first processor, an SPL image file; acquiring, by the first processor and the second processor, a third duration and starting timing synchronously; in a case that the third duration expires, transmitting, by the first processor, the SPL image file to the second processor via the shared memory; and booting, by the first processor and/or the second processor, a system of the terminal device cooperatively based on the SPL image file received by the second processor.

Abstract: A DSP-based electrical energy metering device is provided. After determining a current application mode, a DSP controller compares an execution rate of each computing task with a corresponding preset comparison value, and outputs a first condition value to a condition general register based on a comparison result, so as to control an execution rate of each computing task in the DSP controller. A jump condition controller outputs a second condition value corresponding to the current application mode to the condition general register based on a change in the execution rate of each computing task compared with an execution rate of the computing task in a previous application mode, so that all computing tasks are executed. An adaptive word length controller adjusts an effective bit width of the electrical signal read by a data general register from a data memory at execution rates of different computing tasks.

Abstract: A modulation circuit for voltage to duty-cycle conversion is provided. A first input end and a second input end of a comparator are supplied with a first voltage and a second voltage via a first switch and a second switch respectively. An output end of the comparator outputs a comparison result signal. A charging end of a charging capacitor is connected with a charging current source and a grounding reset module, and is connected with the first input end via a third switch, and is connected with the second input end via a fourth switch. When the comparison result signal flips over, a control module controls the grounding reset module to switch an on-off state of a first switch group including the first switch and the fourth switch and a second switch group including the second switch and the third switch.

Abstract: A microprocessor for metering electric energy, a microcontroller unit thereof, and a circuit and a method for metering energy accumulation. The circuit for metering energy accumulation includes a calculation-comparison circuit and a counter circuit that are connected. The calculation-comparison circuit is configured to: calculate an accumulation of a value of power in power consumption data and a value of current energy, and a difference between the accumulation and a preset threshold; output a flag bit, characterizing whether the difference being less than zero, to the counter circuit; set the value of current energy to be the difference in a case that the difference is not less than zero; and set the value of current energy to be the accumulation in a case that the difference is less than zero. Calculation in electric energy metering is specifically implemented, effectively improving electric energy metering efficiency and product economic benefit.

Abstract: A microprocessor for metering electric energy, a microcontroller unit thereof, and a circuit and a method for metering energy accumulation. The circuit for metering energy accumulation includes a calculation-comparison circuit and a counter circuit that are connected. The calculation-comparison circuit is configured to: calculate an accumulation of a value of power in power consumption data and a value of current energy, and a difference between the accumulation and a preset threshold; output a flag bit, characterizing whether the difference being less than zero, to the counter circuit; set the value of current energy to be the difference in a case that the difference is not less than zero; and set the value of current energy to be the accumulation in a case that the difference is less than zero. Calculation in electric energy metering is specifically implemented, effectively improving electric energy metering efficiency and product economic benefit.

Abstract: A method, an apparatus, and a device for detecting abnormality of an electric signal. The method includes: sampling the electric signal at each of sampling points in unit sampling intervals, to obtain a sampling value; counting abnormal sampling points within each of the unit sampling intervals to acquire a quantity of abnormal points, where each of the abnormal sampling points is one of the sampling points at which the sampling value is out of a threshold range of the electric signal; determining each of the unit sampling intervals, within which the quantity of abnormal points is larger than a quantity-of-abnormal-point threshold, to be an abnormal unit sampling interval; counting the abnormal unit sampling intervals that are consecutive, to acquire a quantity of consecutive abnormal intervals; and determining that the electric signal is abnormal, in response to the quantity of consecutive abnormal intervals being greater than a quantity-of-abnormal-interval threshold.

Abstract: A phase correction circuit, a phase correction method and an electric energy metering device are provided. The phase correction circuit includes a reference voltage circuit and a current correction circuit. The reference voltage circuit includes a first predetermined number of first delay D flip-flops and a first synchronization D flip-flop. The current correction circuit includes a second predetermined number of second delay D flip-flops, a second synchronization D flip-flop and a data selector. The data selector outputs a current signal of one of the second delay D flip-flops to the second synchronization D flip-flop. The second predetermined number is greater than or equal to the first predetermined number. In a case that the second predetermined number is equal to the first predetermined number, each of the second predetermined number and the first predetermined number is greater than 1.

Abstract: A modulation circuit for voltage to duty-cycle conversion is provided. A first input end and a second input end of a comparator are supplied with a first voltage and a second voltage via a first switch and a second switch respectively. An output end of the comparator outputs a comparison result signal. A charging end of a charging capacitor is connected with a charging current source and a grounding reset module, and is connected with the first input end via a third switch, and is connected with the second input end via a fourth switch. When the comparison result signal flips over, a control module controls the grounding reset module to switch an on-off state of a first switch group including the first switch and the fourth switch and a second switch group including the second switch and the third switch.

Abstract: An analog-to-digital conversion method and an A/D conversion device for a temperature sensor are provided. An analog front-end circuit generates an A/D converter input signal positively correlated to a temperature and an A/D converter reference voltage signal negatively correlated to the temperature, and an operation is performed on a ratio of amplitudes of the generated signals to obtain a quantized output value. Since the amplitude of the A/D converter input signal is less than that of the A/D converter reference voltage signal, measurements on other signals is compatible with the measurement on the temperature in a multi-sensor system. A digitized output value is calculated by a digital-assisted readout method to generate a linear output relating to a temperature, thereby improving the accuracy of temperature measurement and reducing complexity of analog circuit design.

Abstract: An Internet of Things (IOT), a communication method, a bridge device and an access device for the IOT are disclosed. The method is applied to the bridge device for the IOT, and includes: receiving, by the bridge device, data information carrying a specified identification sent from an IOT access device; searching for, by the bridge device, a power consumption device in the IOT corresponding to the specified identification; determining, by the bridge device, whether the power consumption device and the IOT access device support the same communication mode and communication protocol; converting, by the bridge device, the data information into data information which is identifiable to the power consumption device, in the case that it is determined that the power consumption device and the IOT access device support different communication modes and communication protocols; and sending, by the bridge device, the converted data information to the power consumption device.

Abstract: An Internet of Things (IOT), a communication method, a bridge device and an access device for the IOT are disclosed. The method is applied to the bridge device for the IOT, and includes: receiving, by the bridge device, data information carrying a specified identification sent from an IOT access device; searching for, by the bridge device, a power consumption device in the IOT corresponding to the specified identification; determining, by the bridge device, whether the power consumption device and the IOT access device support the same communication mode and communication protocol; converting, by the bridge device, the data information into data information which is identifiable to the power consumption device, in the case that it is determined that the power consumption device and the IOT access device support different communication modes and communication protocols; and sending, by the bridge device, the converted data information to the power consumption device.