The Core Problems It Solves
Once field interviewing begins, three challenges arise: data security, interviewer behavior monitoring, and complex questionnaire operation. TLSUN CAPI solves each with offline execution and end-to-end quality control.
Offline data security
Complete interviews without a network connection; three-tier data backup prevents data loss, syncing back to the server once online.
Interviewer behavior is monitorable
Audio recording + GPS location checks make every interview traceable, auditable, and controllable.
Operation is no longer complex
A paper-like questionnaire interface lowers the barrier for interviewers, so even complex questionnaires run smoothly.
Key Capabilities
Full-process management from fieldwork execution to quality control.
Offline execution
Interviewers complete interviews without a network connection, syncing data once online.
Paper-like questionnaire interface
Presented like a paper questionnaire, reducing interviewer complexity.
Three-tier data backup
Multiple backup mechanisms keep offline data safe.
Audio-recording quality control
Records the full interview audio for quality checks.
GPS location verification
Records the interview location to verify on-site visits.
Sample management
Supports household sampling, household-member sampling, and backup sample management.
Household contact process management
Records the full door-to-door contact process, standardizing the survey workflow.
Multi-terminal clients
Supports laptop and tablet clients.
Projects We Serve
TLSUN CAPI has long served national-level large-scale surveys, completing 100,000+ interview samples and withstanding the test of large-scale, long-cycle, complex-sample fieldwork.
Chinese Social Survey (CSS)
A national-level large-scale social survey we have served for years.
China Rural Revitalization Survey (CRRS)
A comprehensive survey in the field of rural revitalization.
CAS Longitudinal Household Survey of Ethnic Minority Populations in Southwest China
A longitudinal household survey carried out with ten tablets on site, uploading 24,000+ multimedia files and 6,800+ parallel data records.
FAQ
Which projects is TLSUN CAPI suited for?
Door-to-door and intercept interview projects and other large field surveys requiring on-site visits.
How is data kept safe offline?
Interviewers complete interviews without a network connection; the system uses a three-tier data backup mechanism and syncs back to the server once online.
How is interviewer behavior quality-controlled?
The system provides audio recording and GPS location checks, recording the interview process and location for full-process monitoring and quality control.
Which large projects has TLSUN CAPI served?
Long-term service to the Chinese Social Survey (CSS), the China Rural Revitalization Survey (CRRS), and the CAS longitudinal household survey of ethnic minority populations in southwest China.