Formaldehyde concentration measurement method and apparatus, and air purifier

A formaldehyde concentration measurement apparatus, comprising:

• a processor;
• a communication interface;
• a formaldehyde sensor electrically connected to the processor via the communication interface;
• a temperature sensor, or a humidity sensor, or the temperature sensor and the humidity sensor, electrically connected to the processor via the communication interface,
• wherein the formaldehyde sensor is configured to measure a concentration of formaldehyde to obtain an initial formaldehyde concentration value, and to send the initial formaldehyde concentration value to the processor;
• the temperature sensor is configured to collect temperature information of an environment surrounding the formaldehyde sensor, and to send the temperature information to the processor;
• the temperature sensor is configured to collect humidity information of the environment surrounding the formaldehyde sensor, and to send the humidity information to the processor;
• when the apparatus comprises the temperature sensor, the processor is configured to determine a formaldehyde concentration compensation value of the formaldehyde sensor according to the temperature information that is received;
• when the apparatus comprises the humidity sensor, the processor is configured to determine the formaldehyde concentration compensation value of the formaldehyde sensor according to the humidity information that is received;
• when the apparatus comprises the temperature sensor and the humidity sensor, the processor is configured to determine the formaldehyde concentration compensation value of the formaldehyde sensor according to the temperature information and humidity information that are received;
• and
• the processor is configured to determine a target formaldehyde concentration value of the formaldehyde sensor according to the formaldehyde concentration compensation value and the initial formaldehyde concentration value that is received.